* [PATCH 04/13] powerpc/476: add machine check handler for 47x core
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
@ 2010-03-05 13:43 ` Dave Kleikamp
2010-05-05 12:27 ` Josh Boyer
2010-03-05 20:43 ` [PATCH 01/13] powerpc/booke: Add Stack Marking support to Booke Exception Prolog Dave Kleikamp
` (11 subsequent siblings)
12 siblings, 1 reply; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 13:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/476: add machine check handler for 47x core
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
The 47x core's MCSR varies from 44x, so it needs it's own machine check
handler.
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/cputable.h | 1 +
arch/powerpc/kernel/cputable.c | 1 +
arch/powerpc/kernel/traps.c | 40 +++++++++++++++++++++++++++++++++++
3 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 75b774e..9fff628 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -72,6 +72,7 @@ extern int machine_check_4xx(struct pt_regs *regs);
extern int machine_check_440A(struct pt_regs *regs);
extern int machine_check_e500(struct pt_regs *regs);
extern int machine_check_e200(struct pt_regs *regs);
+extern int machine_check_47x(struct pt_regs *regs);
/* NOTE WELL: Update identify_cpu() if fields are added or removed! */
struct cpu_spec {
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 338ac47..7b2a67c 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1712,6 +1712,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL,
.icache_bsize = 32,
.dcache_bsize = 128,
+ .machine_check = machine_check_47x,
.platform = "ppc470",
},
{ /* default match */
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index d069ff8..21ed77b 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -376,6 +376,46 @@ int machine_check_440A(struct pt_regs *regs)
}
return 0;
}
+
+int machine_check_47x(struct pt_regs *regs)
+{
+ unsigned long reason = get_mc_reason(regs);
+ u32 mcsr;
+
+ printk(KERN_ERR "Machine check in kernel mode.\n");
+ if (reason & ESR_IMCP) {
+ printk(KERN_ERR
+ "Instruction Synchronous Machine Check exception\n");
+ mtspr(SPRN_ESR, reason & ~ESR_IMCP);
+ return 0;
+ }
+ mcsr = mfspr(SPRN_MCSR);
+ if (mcsr & MCSR_IB)
+ printk(KERN_ERR "Instruction Read PLB Error\n");
+ if (mcsr & MCSR_DRB)
+ printk(KERN_ERR "Data Read PLB Error\n");
+ if (mcsr & MCSR_DWB)
+ printk(KERN_ERR "Data Write PLB Error\n");
+ if (mcsr & MCSR_TLBP)
+ printk(KERN_ERR "TLB Parity Error\n");
+ if (mcsr & MCSR_ICP) {
+ flush_instruction_cache();
+ printk(KERN_ERR "I-Cache Parity Error\n");
+ }
+ if (mcsr & MCSR_DCSP)
+ printk(KERN_ERR "D-Cache Search Parity Error\n");
+ if (mcsr & PPC47x_MCSR_GPR)
+ printk(KERN_ERR "GPR Parity Error\n");
+ if (mcsr & PPC47x_MCSR_FPR)
+ printk(KERN_ERR "FPR Parity Error\n");
+ if (mcsr & PPC47x_MCSR_IPR)
+ printk(KERN_ERR "Machine Check exception is imprecise\n");
+
+ /* Clear MCSR */
+ mtspr(SPRN_MCSR, mcsr);
+
+ return 0;
+}
#elif defined(CONFIG_E500)
int machine_check_e500(struct pt_regs *regs)
{
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2
@ 2010-03-05 20:42 Dave Kleikamp
2010-03-05 13:43 ` [PATCH 04/13] powerpc/476: add machine check handler for 47x core Dave Kleikamp
` (12 more replies)
0 siblings, 13 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:42 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
These patches add support for the 476 core. The goal is to have a single
binary that will run on both 44x and 47x, but we still have some details to
work out. The biggest is that the L1 cache line size differs on the two
platforms, but it's currently a compile-time option.
The code was originally written by Ben Herrenschmidt and Torez Smith, but
I've been maintaining it. I'll take responsibility for the content, but I
can't take all the credit.
The first patch is a generic bookE feature. Patches 2-5 add base 47x
support. Patches 6 & 7 add a platform to support the ISS simulator, and
patches 8-13 add workarounds for DD1 and DD1.1 hardware bugs.
It's not yet decided if the workaround patches will make it into mainline.
Most likely the last one will not, since it applies only to the earlier DD1
hardware which probably won't be in use nearly as long as the DD1.1 chips.
These patches are also available via git from the "version2" branch of
git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/ppc476.git
Changes since first posting on March 1, 2010:
- Added KERN level to printk's in machine_check_47x and reduced the indent
- fixed PVR values in cputable.c
- replaced re-definition of STACK_FRAME_REGS_MARKER with include of ptrace.h
- removed PPC_44x_46x config option
- Kconfig: ISS4xx shouldn't select 440GP for 47x
- Separate out DD1 workaround from DD1.1 workarounds
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply [flat|nested] 21+ messages in thread
* [PATCH 01/13] powerpc/booke: Add Stack Marking support to Booke Exception Prolog
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
2010-03-05 13:43 ` [PATCH 04/13] powerpc/476: add machine check handler for 47x core Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 02/13] powerpc/44x: break out cpu init code into stand-alone function Dave Kleikamp
` (10 subsequent siblings)
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/booke: Add Stack Marking support to Booke Exception Prolog
From: Torez Smith <lnxtorez@linux.vnet.ibm.com>
This patch adds a marker to the exception stack frame to aid in debugging.
It's already inserted on other platforms and xmon recognizes it and
identifies exception frames when showing stack traces.
Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/kernel/head_booke.h | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
index 50504ae..a0bf158 100644
--- a/arch/powerpc/kernel/head_booke.h
+++ b/arch/powerpc/kernel/head_booke.h
@@ -1,6 +1,7 @@
#ifndef __HEAD_BOOKE_H__
#define __HEAD_BOOKE_H__
+#include <asm/ptrace.h> /* for STACK_FRAME_REGS_MARKER */
/*
* Macros used for common Book-e exception handling
*/
@@ -48,6 +49,9 @@
stw r10,0(r11); \
rlwinm r9,r9,0,14,12; /* clear MSR_WE (necessary?) */\
stw r0,GPR0(r11); \
+ lis r10, STACK_FRAME_REGS_MARKER@ha;/* exception frame marker */ \
+ addi r10, r10, STACK_FRAME_REGS_MARKER@l; \
+ stw r10, 8(r11); \
SAVE_4GPRS(3, r11); \
SAVE_2GPRS(7, r11)
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 02/13] powerpc/44x: break out cpu init code into stand-alone function
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
2010-03-05 13:43 ` [PATCH 04/13] powerpc/476: add machine check handler for 47x core Dave Kleikamp
2010-03-05 20:43 ` [PATCH 01/13] powerpc/booke: Add Stack Marking support to Booke Exception Prolog Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 03/13] powerpc/47x: Base ppc476 support Dave Kleikamp
` (9 subsequent siblings)
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/44x: break out cpu init code into stand-alone function
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
The 47x platform supports multiple cores and shares code with 44x.
Break out code that is common for initializing the primary and secondary
cpus into a function which can be called for both.
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/kernel/head_44x.S | 330 +++++++++++++++++++++-------------------
1 files changed, 171 insertions(+), 159 deletions(-)
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 711368b..39be049 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -69,165 +69,7 @@ _ENTRY(_start);
mr r27,r7
li r24,0 /* CPU number */
-/*
- * In case the firmware didn't do it, we apply some workarounds
- * that are good for all 440 core variants here
- */
- mfspr r3,SPRN_CCR0
- rlwinm r3,r3,0,0,27 /* disable icache prefetch */
- isync
- mtspr SPRN_CCR0,r3
- isync
- sync
-
-/*
- * Set up the initial MMU state
- *
- * We are still executing code at the virtual address
- * mappings set by the firmware for the base of RAM.
- *
- * We first invalidate all TLB entries but the one
- * we are running from. We then load the KERNELBASE
- * mappings so we can begin to use kernel addresses
- * natively and so the interrupt vector locations are
- * permanently pinned (necessary since Book E
- * implementations always have translation enabled).
- *
- * TODO: Use the known TLB entry we are running from to
- * determine which physical region we are located
- * in. This can be used to determine where in RAM
- * (on a shared CPU system) or PCI memory space
- * (on a DRAMless system) we are located.
- * For now, we assume a perfect world which means
- * we are located at the base of DRAM (physical 0).
- */
-
-/*
- * Search TLB for entry that we are currently using.
- * Invalidate all entries but the one we are using.
- */
- /* Load our current PID->MMUCR TID and MSR IS->MMUCR STS */
- mfspr r3,SPRN_PID /* Get PID */
- mfmsr r4 /* Get MSR */
- andi. r4,r4,MSR_IS@l /* TS=1? */
- beq wmmucr /* If not, leave STS=0 */
- oris r3,r3,PPC44x_MMUCR_STS@h /* Set STS=1 */
-wmmucr: mtspr SPRN_MMUCR,r3 /* Put MMUCR */
- sync
-
- bl invstr /* Find our address */
-invstr: mflr r5 /* Make it accessible */
- tlbsx r23,0,r5 /* Find entry we are in */
- li r4,0 /* Start at TLB entry 0 */
- li r3,0 /* Set PAGEID inval value */
-1: cmpw r23,r4 /* Is this our entry? */
- beq skpinv /* If so, skip the inval */
- tlbwe r3,r4,PPC44x_TLB_PAGEID /* If not, inval the entry */
-skpinv: addi r4,r4,1 /* Increment */
- cmpwi r4,64 /* Are we done? */
- bne 1b /* If not, repeat */
- isync /* If so, context change */
-
-/*
- * Configure and load pinned entry into TLB slot 63.
- */
-
- lis r3,PAGE_OFFSET@h
- ori r3,r3,PAGE_OFFSET@l
-
- /* Kernel is at the base of RAM */
- li r4, 0 /* Load the kernel physical address */
-
- /* Load the kernel PID = 0 */
- li r0,0
- mtspr SPRN_PID,r0
- sync
-
- /* Initialize MMUCR */
- li r5,0
- mtspr SPRN_MMUCR,r5
- sync
-
- /* pageid fields */
- clrrwi r3,r3,10 /* Mask off the effective page number */
- ori r3,r3,PPC44x_TLB_VALID | PPC44x_TLB_256M
-
- /* xlat fields */
- clrrwi r4,r4,10 /* Mask off the real page number */
- /* ERPN is 0 for first 4GB page */
-
- /* attrib fields */
- /* Added guarded bit to protect against speculative loads/stores */
- li r5,0
- ori r5,r5,(PPC44x_TLB_SW | PPC44x_TLB_SR | PPC44x_TLB_SX | PPC44x_TLB_G)
-
- li r0,63 /* TLB slot 63 */
-
- tlbwe r3,r0,PPC44x_TLB_PAGEID /* Load the pageid fields */
- tlbwe r4,r0,PPC44x_TLB_XLAT /* Load the translation fields */
- tlbwe r5,r0,PPC44x_TLB_ATTRIB /* Load the attrib/access fields */
-
- /* Force context change */
- mfmsr r0
- mtspr SPRN_SRR1, r0
- lis r0,3f@h
- ori r0,r0,3f@l
- mtspr SPRN_SRR0,r0
- sync
- rfi
-
- /* If necessary, invalidate original entry we used */
-3: cmpwi r23,63
- beq 4f
- li r6,0
- tlbwe r6,r23,PPC44x_TLB_PAGEID
- isync
-
-4:
-#ifdef CONFIG_PPC_EARLY_DEBUG_44x
- /* Add UART mapping for early debug. */
-
- /* pageid fields */
- lis r3,PPC44x_EARLY_DEBUG_VIRTADDR@h
- ori r3,r3,PPC44x_TLB_VALID|PPC44x_TLB_TS|PPC44x_TLB_64K
-
- /* xlat fields */
- lis r4,CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW@h
- ori r4,r4,CONFIG_PPC_EARLY_DEBUG_44x_PHYSHIGH
-
- /* attrib fields */
- li r5,(PPC44x_TLB_SW|PPC44x_TLB_SR|PPC44x_TLB_I|PPC44x_TLB_G)
- li r0,62 /* TLB slot 0 */
-
- tlbwe r3,r0,PPC44x_TLB_PAGEID
- tlbwe r4,r0,PPC44x_TLB_XLAT
- tlbwe r5,r0,PPC44x_TLB_ATTRIB
-
- /* Force context change */
- isync
-#endif /* CONFIG_PPC_EARLY_DEBUG_44x */
-
- /* Establish the interrupt vector offsets */
- SET_IVOR(0, CriticalInput);
- SET_IVOR(1, MachineCheck);
- SET_IVOR(2, DataStorage);
- SET_IVOR(3, InstructionStorage);
- SET_IVOR(4, ExternalInput);
- SET_IVOR(5, Alignment);
- SET_IVOR(6, Program);
- SET_IVOR(7, FloatingPointUnavailable);
- SET_IVOR(8, SystemCall);
- SET_IVOR(9, AuxillaryProcessorUnavailable);
- SET_IVOR(10, Decrementer);
- SET_IVOR(11, FixedIntervalTimer);
- SET_IVOR(12, WatchdogTimer);
- SET_IVOR(13, DataTLBError);
- SET_IVOR(14, InstructionTLBError);
- SET_IVOR(15, DebugCrit);
-
- /* Establish the interrupt vector base */
- lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */
- mtspr SPRN_IVPR,r4
+ bl init_cpu_state
/*
* This is where the main kernel code starts.
@@ -647,6 +489,176 @@ _GLOBAL(set_context)
blr
/*
+ * Init CPU state. This is called at boot time or for secondary CPUs
+ * to setup initial TLB entries, setup IVORs, etc...
+ */
+_GLOBAL(init_cpu_state)
+ mflr r22
+/*
+ * In case the firmware didn't do it, we apply some workarounds
+ * that are good for all 440 core variants here
+ */
+ mfspr r3,SPRN_CCR0
+ rlwinm r3,r3,0,0,27 /* disable icache prefetch */
+ isync
+ mtspr SPRN_CCR0,r3
+ isync
+ sync
+
+/*
+ * Set up the initial MMU state
+ *
+ * We are still executing code at the virtual address
+ * mappings set by the firmware for the base of RAM.
+ *
+ * We first invalidate all TLB entries but the one
+ * we are running from. We then load the KERNELBASE
+ * mappings so we can begin to use kernel addresses
+ * natively and so the interrupt vector locations are
+ * permanently pinned (necessary since Book E
+ * implementations always have translation enabled).
+ *
+ * TODO: Use the known TLB entry we are running from to
+ * determine which physical region we are located
+ * in. This can be used to determine where in RAM
+ * (on a shared CPU system) or PCI memory space
+ * (on a DRAMless system) we are located.
+ * For now, we assume a perfect world which means
+ * we are located at the base of DRAM (physical 0).
+ */
+
+/*
+ * Search TLB for entry that we are currently using.
+ * Invalidate all entries but the one we are using.
+ */
+ /* Load our current PID->MMUCR TID and MSR IS->MMUCR STS */
+ mfspr r3,SPRN_PID /* Get PID */
+ mfmsr r4 /* Get MSR */
+ andi. r4,r4,MSR_IS@l /* TS=1? */
+ beq wmmucr /* If not, leave STS=0 */
+ oris r3,r3,PPC44x_MMUCR_STS@h /* Set STS=1 */
+wmmucr: mtspr SPRN_MMUCR,r3 /* Put MMUCR */
+ sync
+
+ bl invstr /* Find our address */
+invstr: mflr r5 /* Make it accessible */
+ tlbsx r23,0,r5 /* Find entry we are in */
+ li r4,0 /* Start at TLB entry 0 */
+ li r3,0 /* Set PAGEID inval value */
+1: cmpw r23,r4 /* Is this our entry? */
+ beq skpinv /* If so, skip the inval */
+ tlbwe r3,r4,PPC44x_TLB_PAGEID /* If not, inval the entry */
+skpinv: addi r4,r4,1 /* Increment */
+ cmpwi r4,64 /* Are we done? */
+ bne 1b /* If not, repeat */
+ isync /* If so, context change */
+
+/*
+ * Configure and load pinned entry into TLB slot 63.
+ */
+
+ lis r3,PAGE_OFFSET@h
+ ori r3,r3,PAGE_OFFSET@l
+
+ /* Kernel is at the base of RAM */
+ li r4, 0 /* Load the kernel physical address */
+
+ /* Load the kernel PID = 0 */
+ li r0,0
+ mtspr SPRN_PID,r0
+ sync
+
+ /* Initialize MMUCR */
+ li r5,0
+ mtspr SPRN_MMUCR,r5
+ sync
+
+ /* pageid fields */
+ clrrwi r3,r3,10 /* Mask off the effective page number */
+ ori r3,r3,PPC44x_TLB_VALID | PPC44x_TLB_256M
+
+ /* xlat fields */
+ clrrwi r4,r4,10 /* Mask off the real page number */
+ /* ERPN is 0 for first 4GB page */
+
+ /* attrib fields */
+ /* Added guarded bit to protect against speculative loads/stores */
+ li r5,0
+ ori r5,r5,(PPC44x_TLB_SW | PPC44x_TLB_SR | PPC44x_TLB_SX | PPC44x_TLB_G)
+
+ li r0,63 /* TLB slot 63 */
+
+ tlbwe r3,r0,PPC44x_TLB_PAGEID /* Load the pageid fields */
+ tlbwe r4,r0,PPC44x_TLB_XLAT /* Load the translation fields */
+ tlbwe r5,r0,PPC44x_TLB_ATTRIB /* Load the attrib/access fields */
+
+ /* Force context change */
+ mfmsr r0
+ mtspr SPRN_SRR1, r0
+ lis r0,3f@h
+ ori r0,r0,3f@l
+ mtspr SPRN_SRR0,r0
+ sync
+ rfi
+
+ /* If necessary, invalidate original entry we used */
+3: cmpwi r23,63
+ beq 4f
+ li r6,0
+ tlbwe r6,r23,PPC44x_TLB_PAGEID
+ isync
+
+4:
+#ifdef CONFIG_PPC_EARLY_DEBUG_44x
+ /* Add UART mapping for early debug. */
+
+ /* pageid fields */
+ lis r3,PPC44x_EARLY_DEBUG_VIRTADDR@h
+ ori r3,r3,PPC44x_TLB_VALID|PPC44x_TLB_TS|PPC44x_TLB_64K
+
+ /* xlat fields */
+ lis r4,CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW@h
+ ori r4,r4,CONFIG_PPC_EARLY_DEBUG_44x_PHYSHIGH
+
+ /* attrib fields */
+ li r5,(PPC44x_TLB_SW|PPC44x_TLB_SR|PPC44x_TLB_I|PPC44x_TLB_G)
+ li r0,62 /* TLB slot 0 */
+
+ tlbwe r3,r0,PPC44x_TLB_PAGEID
+ tlbwe r4,r0,PPC44x_TLB_XLAT
+ tlbwe r5,r0,PPC44x_TLB_ATTRIB
+
+ /* Force context change */
+ isync
+#endif /* CONFIG_PPC_EARLY_DEBUG_44x */
+
+ /* Establish the interrupt vector offsets */
+ SET_IVOR(0, CriticalInput);
+ SET_IVOR(1, MachineCheck);
+ SET_IVOR(2, DataStorage);
+ SET_IVOR(3, InstructionStorage);
+ SET_IVOR(4, ExternalInput);
+ SET_IVOR(5, Alignment);
+ SET_IVOR(6, Program);
+ SET_IVOR(7, FloatingPointUnavailable);
+ SET_IVOR(8, SystemCall);
+ SET_IVOR(9, AuxillaryProcessorUnavailable);
+ SET_IVOR(10, Decrementer);
+ SET_IVOR(11, FixedIntervalTimer);
+ SET_IVOR(12, WatchdogTimer);
+ SET_IVOR(13, DataTLBError);
+ SET_IVOR(14, InstructionTLBError);
+ SET_IVOR(15, DebugCrit);
+
+ /* Establish the interrupt vector base */
+ lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */
+ mtspr SPRN_IVPR,r4
+
+ addis r22,r22,KERNELBASE@h
+ mtlr r22
+ blr
+
+/*
* We put a few things here that have to be page-aligned. This stuff
* goes at the beginning of the data segment, which is page-aligned.
*/
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 03/13] powerpc/47x: Base ppc476 support
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (2 preceding siblings ...)
2010-03-05 20:43 ` [PATCH 02/13] powerpc/44x: break out cpu init code into stand-alone function Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 05/13] powerpc/476: Add isync after loading mmu and debug spr's Dave Kleikamp
` (8 subsequent siblings)
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/47x: Base ppc476 support
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
This patch adds the base support for the 476 processor. The code was
primarily written by Ben Herrenschmidt and Torez Smith, but I've been
maintaining it for a while.
The goal is to have a single binary that will run on 44x and 47x, but
we still have some details to work out. The biggest is that the L1 cache
line size differs on the two platforms, but it's currently a compile-time
option.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/cache.h | 6
arch/powerpc/include/asm/cputable.h | 4
arch/powerpc/include/asm/mmu-44x.h | 51 +++
arch/powerpc/include/asm/mmu.h | 1
arch/powerpc/include/asm/reg.h | 1
arch/powerpc/include/asm/reg_booke.h | 26 ++
arch/powerpc/kernel/cputable.c | 13 +
arch/powerpc/kernel/entry_32.S | 5
arch/powerpc/kernel/head_44x.S | 502 +++++++++++++++++++++++++++++++-
arch/powerpc/kernel/misc_32.S | 9 -
arch/powerpc/kernel/smp.c | 8 +
arch/powerpc/mm/44x_mmu.c | 144 +++++++++
arch/powerpc/mm/mmu_context_nohash.c | 8 +
arch/powerpc/mm/mmu_decl.h | 7
arch/powerpc/mm/tlb_nohash_low.S | 118 +++++++-
arch/powerpc/platforms/44x/Kconfig | 9 +
arch/powerpc/platforms/Kconfig.cputype | 5
17 files changed, 873 insertions(+), 44 deletions(-)
diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index 81de6eb..725634f 100644
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -12,8 +12,12 @@
#define L1_CACHE_SHIFT 6
#define MAX_COPY_PREFETCH 4
#elif defined(CONFIG_PPC32)
-#define L1_CACHE_SHIFT 5
#define MAX_COPY_PREFETCH 4
+#if defined(CONFIG_PPC_47x)
+#define L1_CACHE_SHIFT 7
+#else
+#define L1_CACHE_SHIFT 5
+#endif
#else /* CONFIG_PPC64 */
#define L1_CACHE_SHIFT 7
#endif
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 80f315e..75b774e 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -365,6 +365,7 @@ extern const char *powerpc_base_platform;
#define CPU_FTRS_44X (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
#define CPU_FTRS_440x6 (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE | \
CPU_FTR_INDEXED_DCR)
+#define CPU_FTRS_47X (CPU_FTRS_440x6)
#define CPU_FTRS_E200 (CPU_FTR_USE_TB | CPU_FTR_SPE_COMP | \
CPU_FTR_NODSISRALIGN | CPU_FTR_COHERENT_ICACHE | \
CPU_FTR_UNIFIED_ID_CACHE | CPU_FTR_NOEXECUTE)
@@ -453,6 +454,9 @@ enum {
#ifdef CONFIG_44x
CPU_FTRS_44X | CPU_FTRS_440x6 |
#endif
+#ifdef CONFIG_PPC_47x
+ CPU_FTRS_47X |
+#endif
#ifdef CONFIG_E200
CPU_FTRS_E200 |
#endif
diff --git a/arch/powerpc/include/asm/mmu-44x.h b/arch/powerpc/include/asm/mmu-44x.h
index 0372669..bf52d70 100644
--- a/arch/powerpc/include/asm/mmu-44x.h
+++ b/arch/powerpc/include/asm/mmu-44x.h
@@ -40,7 +40,7 @@
#define PPC44x_TLB_I 0x00000400 /* Caching is inhibited */
#define PPC44x_TLB_M 0x00000200 /* Memory is coherent */
#define PPC44x_TLB_G 0x00000100 /* Memory is guarded */
-#define PPC44x_TLB_E 0x00000080 /* Memory is guarded */
+#define PPC44x_TLB_E 0x00000080 /* Memory is little endian */
#define PPC44x_TLB_PERM_MASK 0x0000003f
#define PPC44x_TLB_UX 0x00000020 /* User execution */
@@ -53,6 +53,52 @@
/* Number of TLB entries */
#define PPC44x_TLB_SIZE 64
+/* 47x bits */
+#define PPC47x_MMUCR_TID 0x0000ffff
+#define PPC47x_MMUCR_STS 0x00010000
+
+/* Page identification fields */
+#define PPC47x_TLB0_EPN_MASK 0xfffff000 /* Effective Page Number */
+#define PPC47x_TLB0_VALID 0x00000800 /* Valid flag */
+#define PPC47x_TLB0_TS 0x00000400 /* Translation address space */
+#define PPC47x_TLB0_4K 0x00000000
+#define PPC47x_TLB0_16K 0x00000010
+#define PPC47x_TLB0_64K 0x00000030
+#define PPC47x_TLB0_1M 0x00000070
+#define PPC47x_TLB0_16M 0x000000f0
+#define PPC47x_TLB0_256M 0x000001f0
+#define PPC47x_TLB0_1G 0x000003f0
+#define PPC47x_TLB0_BOLTED_R 0x00000008 /* tlbre only */
+
+/* Translation fields */
+#define PPC47x_TLB1_RPN_MASK 0xfffff000 /* Real Page Number */
+#define PPC47x_TLB1_ERPN_MASK 0x000003ff
+
+/* Storage attribute and access control fields */
+#define PPC47x_TLB2_ATTR_MASK 0x0003ff80
+#define PPC47x_TLB2_IL1I 0x00020000 /* Memory is guarded */
+#define PPC47x_TLB2_IL1D 0x00010000 /* Memory is guarded */
+#define PPC47x_TLB2_U0 0x00008000 /* User 0 */
+#define PPC47x_TLB2_U1 0x00004000 /* User 1 */
+#define PPC47x_TLB2_U2 0x00002000 /* User 2 */
+#define PPC47x_TLB2_U3 0x00001000 /* User 3 */
+#define PPC47x_TLB2_W 0x00000800 /* Caching is write-through */
+#define PPC47x_TLB2_I 0x00000400 /* Caching is inhibited */
+#define PPC47x_TLB2_M 0x00000200 /* Memory is coherent */
+#define PPC47x_TLB2_G 0x00000100 /* Memory is guarded */
+#define PPC47x_TLB2_E 0x00000080 /* Memory is little endian */
+#define PPC47x_TLB2_PERM_MASK 0x0000003f
+#define PPC47x_TLB2_UX 0x00000020 /* User execution */
+#define PPC47x_TLB2_UW 0x00000010 /* User write */
+#define PPC47x_TLB2_UR 0x00000008 /* User read */
+#define PPC47x_TLB2_SX 0x00000004 /* Super execution */
+#define PPC47x_TLB2_SW 0x00000002 /* Super write */
+#define PPC47x_TLB2_SR 0x00000001 /* Super read */
+#define PPC47x_TLB2_U_RWX (PPC47x_TLB2_UX|PPC47x_TLB2_UW|PPC47x_TLB2_UR)
+#define PPC47x_TLB2_S_RWX (PPC47x_TLB2_SX|PPC47x_TLB2_SW|PPC47x_TLB2_SR)
+#define PPC47x_TLB2_S_RW (PPC47x_TLB2_SW | PPC47x_TLB2_SR)
+#define PPC47x_TLB2_IMG (PPC47x_TLB2_I | PPC47x_TLB2_M | PPC47x_TLB2_G)
+
#ifndef __ASSEMBLY__
extern unsigned int tlb_44x_hwater;
@@ -79,12 +125,15 @@ typedef struct {
#if (PAGE_SHIFT == 12)
#define PPC44x_TLBE_SIZE PPC44x_TLB_4K
+#define PPC47x_TLBE_SIZE PPC47x_TLB0_4K
#define mmu_virtual_psize MMU_PAGE_4K
#elif (PAGE_SHIFT == 14)
#define PPC44x_TLBE_SIZE PPC44x_TLB_16K
+#define PPC47x_TLBE_SIZE PPC47x_TLB0_16K
#define mmu_virtual_psize MMU_PAGE_16K
#elif (PAGE_SHIFT == 16)
#define PPC44x_TLBE_SIZE PPC44x_TLB_64K
+#define PPC47x_TLBE_SIZE PPC47x_TLB0_64K
#define mmu_virtual_psize MMU_PAGE_64K
#elif (PAGE_SHIFT == 18)
#define PPC44x_TLBE_SIZE PPC44x_TLB_256K
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 7ffbb65..7ebf42e 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -18,6 +18,7 @@
#define MMU_FTR_TYPE_44x ASM_CONST(0x00000008)
#define MMU_FTR_TYPE_FSL_E ASM_CONST(0x00000010)
#define MMU_FTR_TYPE_3E ASM_CONST(0x00000020)
+#define MMU_FTR_TYPE_47x ASM_CONST(0x00000040)
/*
* This is individual features
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index bc8dd53..4af1c28 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -813,6 +813,7 @@
#define PVR_403GC 0x00200200
#define PVR_403GCX 0x00201400
#define PVR_405GP 0x40110000
+#define PVR_476 0x11a52000
#define PVR_STB03XXX 0x40310000
#define PVR_NP405H 0x41410000
#define PVR_NP405L 0x41610000
diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h
index 3bf7835..ee61a9d 100644
--- a/arch/powerpc/include/asm/reg_booke.h
+++ b/arch/powerpc/include/asm/reg_booke.h
@@ -191,6 +191,12 @@
#define MCSR_DCFP 0x01000000 /* D-Cache Flush Parity Error */
#define MCSR_IMPE 0x00800000 /* Imprecise Machine Check Exception */
+#ifdef CONFIG_PPC_47x
+#define PPC47x_MCSR_GPR 0x01000000 /* GPR parity error */
+#define PPC47x_MCSR_FPR 0x00800000 /* FPR parity error */
+#define PPC47x_MCSR_IPR 0x00400000 /* Imprecise Machine Check Exception */
+#endif
+
#ifdef CONFIG_E500
#define MCSR_MCP 0x80000000UL /* Machine Check Input Pin */
#define MCSR_ICPERR 0x40000000UL /* I-Cache Parity Error */
@@ -510,5 +516,25 @@
#define DBCR_JOI 0x00000002 /* JTAG Serial Outbound Int. Enable */
#define DBCR_JII 0x00000001 /* JTAG Serial Inbound Int. Enable */
#endif /* 403GCX */
+
+/* Some 476 specific registers */
+#define SPRN_SSPCR 830
+#define SPRN_USPCR 831
+#define SPRN_ISPCR 829
+#define SPRN_MMUBE0 820
+#define MMUBE0_IBE0_SHIFT 24
+#define MMUBE0_IBE1_SHIFT 16
+#define MMUBE0_IBE2_SHIFT 8
+#define MMUBE0_VBE0 0x00000004
+#define MMUBE0_VBE1 0x00000002
+#define MMUBE0_VBE2 0x00000001
+#define SPRN_MMUBE1 821
+#define MMUBE1_IBE3_SHIFT 24
+#define MMUBE1_IBE4_SHIFT 16
+#define MMUBE1_IBE5_SHIFT 8
+#define MMUBE1_VBE3 0x00000004
+#define MMUBE1_VBE4 0x00000002
+#define MMUBE1_VBE5 0x00000001
+
#endif /* __ASM_POWERPC_REG_BOOKE_H__ */
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 2fc82ba..338ac47 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1701,6 +1701,19 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check = machine_check_440A,
.platform = "ppc440",
},
+ { /* 476 core */
+ .pvr_mask = 0xffff0000,
+ .pvr_value = 0x11a50000,
+ .cpu_name = "476",
+ .cpu_features = CPU_FTRS_47X,
+ .cpu_user_features = COMMON_USER_BOOKE |
+ PPC_FEATURE_HAS_FPU,
+ .mmu_features = MMU_FTR_TYPE_47x |
+ MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL,
+ .icache_bsize = 32,
+ .dcache_bsize = 128,
+ .platform = "ppc470",
+ },
{ /* default match */
.pvr_mask = 0x00000000,
.pvr_value = 0x00000000,
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 1175a85..ed4aeb9 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -373,11 +373,13 @@ syscall_exit_cont:
bnel- load_dbcr0
#endif
#ifdef CONFIG_44x
+BEGIN_MMU_FTR_SECTION
lis r4,icache_44x_need_flush@ha
lwz r5,icache_44x_need_flush@l(r4)
cmplwi cr0,r5,0
bne- 2f
1:
+END_MMU_FTR_SECTION_IFCLR(MMU_FTR_TYPE_47x)
#endif /* CONFIG_44x */
BEGIN_FTR_SECTION
lwarx r7,0,r1
@@ -848,6 +850,9 @@ resume_kernel:
/* interrupts are hard-disabled at this point */
restore:
#ifdef CONFIG_44x
+BEGIN_MMU_FTR_SECTION
+ b 1f
+END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_47x)
lis r4,icache_44x_need_flush@ha
lwz r5,icache_44x_need_flush@l(r4)
cmplwi cr0,r5,0
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 39be049..1acd175 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -37,6 +37,7 @@
#include <asm/thread_info.h>
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
+#include <asm/synch.h>
#include "head_booke.h"
@@ -191,7 +192,7 @@ interrupt_base:
#endif
/* Data TLB Error Interrupt */
- START_EXCEPTION(DataTLBError)
+ START_EXCEPTION(DataTLBError44x)
mtspr SPRN_SPRG_WSCRATCH0, r10 /* Save some working registers */
mtspr SPRN_SPRG_WSCRATCH1, r11
mtspr SPRN_SPRG_WSCRATCH2, r12
@@ -282,7 +283,7 @@ tlb_44x_patch_hwater_D:
mfspr r10,SPRN_DEAR
/* Jump to common tlb load */
- b finish_tlb_load
+ b finish_tlb_load_44x
2:
/* The bailout. Restore registers to pre-exception conditions
@@ -302,7 +303,7 @@ tlb_44x_patch_hwater_D:
* information from different registers and bailout
* to a different point.
*/
- START_EXCEPTION(InstructionTLBError)
+ START_EXCEPTION(InstructionTLBError44x)
mtspr SPRN_SPRG_WSCRATCH0, r10 /* Save some working registers */
mtspr SPRN_SPRG_WSCRATCH1, r11
mtspr SPRN_SPRG_WSCRATCH2, r12
@@ -378,7 +379,7 @@ tlb_44x_patch_hwater_I:
mfspr r10,SPRN_SRR0
/* Jump to common TLB load point */
- b finish_tlb_load
+ b finish_tlb_load_44x
2:
/* The bailout. Restore registers to pre-exception conditions
@@ -392,15 +393,7 @@ tlb_44x_patch_hwater_I:
mfspr r10, SPRN_SPRG_RSCRATCH0
b InstructionStorage
- /* Debug Interrupt */
- DEBUG_CRIT_EXCEPTION
-
-/*
- * Local functions
- */
-
/*
-
* Both the instruction and data TLB miss get to this
* point to load the TLB.
* r10 - EA of fault
@@ -410,7 +403,7 @@ tlb_44x_patch_hwater_I:
* MMUCR - loaded with proper value when we get here
* Upon exit, we reload everything and RFI.
*/
-finish_tlb_load:
+finish_tlb_load_44x:
/* Combine RPN & ERPN an write WS 0 */
rlwimi r11,r12,0,0,31-PAGE_SHIFT
tlbwe r11,r13,PPC44x_TLB_XLAT
@@ -443,6 +436,227 @@ finish_tlb_load:
mfspr r10, SPRN_SPRG_RSCRATCH0
rfi /* Force context change */
+/* TLB error interrupts for 476
+ */
+#ifdef CONFIG_PPC_47x
+ START_EXCEPTION(DataTLBError47x)
+ mtspr SPRN_SPRG_WSCRATCH0,r10 /* Save some working registers */
+ mtspr SPRN_SPRG_WSCRATCH1,r11
+ mtspr SPRN_SPRG_WSCRATCH2,r12
+ mtspr SPRN_SPRG_WSCRATCH3,r13
+ mfcr r11
+ mtspr SPRN_SPRG_WSCRATCH4,r11
+ mfspr r10,SPRN_DEAR /* Get faulting address */
+
+ /* If we are faulting a kernel address, we have to use the
+ * kernel page tables.
+ */
+ lis r11,PAGE_OFFSET@h
+ cmplw cr0,r10,r11
+ blt+ 3f
+ lis r11,swapper_pg_dir@h
+ ori r11,r11, swapper_pg_dir@l
+ li r12,0 /* MMUCR = 0 */
+ b 4f
+
+ /* Get the PGD for the current thread and setup MMUCR */
+3: mfspr r11,SPRN_SPRG3
+ lwz r11,PGDIR(r11)
+ mfspr r12,SPRN_PID /* Get PID */
+4: mtspr SPRN_MMUCR,r12 /* Set MMUCR */
+
+ /* Mask of required permission bits. Note that while we
+ * do copy ESR:ST to _PAGE_RW position as trying to write
+ * to an RO page is pretty common, we don't do it with
+ * _PAGE_DIRTY. We could do it, but it's a fairly rare
+ * event so I'd rather take the overhead when it happens
+ * rather than adding an instruction here. We should measure
+ * whether the whole thing is worth it in the first place
+ * as we could avoid loading SPRN_ESR completely in the first
+ * place...
+ *
+ * TODO: Is it worth doing that mfspr & rlwimi in the first
+ * place or can we save a couple of instructions here ?
+ */
+ mfspr r12,SPRN_ESR
+ li r13,_PAGE_PRESENT|_PAGE_ACCESSED
+ rlwimi r13,r12,10,30,30
+
+ /* Load the PTE */
+ /* Compute pgdir/pmd offset */
+ rlwinm r12,r10,PPC44x_PGD_OFF_SHIFT,PPC44x_PGD_OFF_MASK_BIT,29
+ lwzx r11,r12,r11 /* Get pgd/pmd entry */
+
+ /* Word 0 is EPN,V,TS,DSIZ */
+ li r12,PPC47x_TLB0_VALID | PPC47x_TLBE_SIZE
+ rlwimi r10,r12,0,32-PAGE_SHIFT,31 /* Insert valid and page size*/
+ li r12,0
+ tlbwe r10,r12,0
+
+ /* XXX can we do better ? Need to make sure tlbwe has established
+ * latch V bit in MMUCR0 before the PTE is loaded further down */
+#ifdef CONFIG_SMP
+ isync
+#endif
+
+ rlwinm. r12,r11,0,0,20 /* Extract pt base address */
+ /* Compute pte address */
+ rlwimi r12,r10,PPC44x_PTE_ADD_SHIFT,PPC44x_PTE_ADD_MASK_BIT,28
+ beq 2f /* Bail if no table */
+ lwz r11,0(r12) /* Get high word of pte entry */
+
+ /* XXX can we do better ? maybe insert a known 0 bit from r11 into the
+ * bottom of r12 to create a data dependency... We can also use r10
+ * as destination nowadays
+ */
+#ifdef CONFIG_SMP
+ lwsync
+#endif
+ lwz r12,4(r12) /* Get low word of pte entry */
+
+ andc. r13,r13,r12 /* Check permission */
+
+ /* Jump to common tlb load */
+ beq finish_tlb_load_47x
+
+2: /* The bailout. Restore registers to pre-exception conditions
+ * and call the heavyweights to help us out.
+ */
+ mfspr r11,SPRN_SPRG_RSCRATCH4
+ mtcr r11
+ mfspr r13,SPRN_SPRG_RSCRATCH3
+ mfspr r12,SPRN_SPRG_RSCRATCH2
+ mfspr r11,SPRN_SPRG_RSCRATCH1
+ mfspr r10,SPRN_SPRG_RSCRATCH0
+ b DataStorage
+
+ /* Instruction TLB Error Interrupt */
+ /*
+ * Nearly the same as above, except we get our
+ * information from different registers and bailout
+ * to a different point.
+ */
+ START_EXCEPTION(InstructionTLBError47x)
+ mtspr SPRN_SPRG_WSCRATCH0,r10 /* Save some working registers */
+ mtspr SPRN_SPRG_WSCRATCH1,r11
+ mtspr SPRN_SPRG_WSCRATCH2,r12
+ mtspr SPRN_SPRG_WSCRATCH3,r13
+ mfcr r11
+ mtspr SPRN_SPRG_WSCRATCH4,r11
+ mfspr r10,SPRN_SRR0 /* Get faulting address */
+
+ /* If we are faulting a kernel address, we have to use the
+ * kernel page tables.
+ */
+ lis r11,PAGE_OFFSET@h
+ cmplw cr0,r10,r11
+ blt+ 3f
+ lis r11,swapper_pg_dir@h
+ ori r11,r11, swapper_pg_dir@l
+ li r12,0 /* MMUCR = 0 */
+ b 4f
+
+ /* Get the PGD for the current thread and setup MMUCR */
+3: mfspr r11,SPRN_SPRG_THREAD
+ lwz r11,PGDIR(r11)
+ mfspr r12,SPRN_PID /* Get PID */
+4: mtspr SPRN_MMUCR,r12 /* Set MMUCR */
+
+ /* Make up the required permissions */
+ li r13,_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_EXEC
+
+ /* Load PTE */
+ /* Compute pgdir/pmd offset */
+ rlwinm r12,r10,PPC44x_PGD_OFF_SHIFT,PPC44x_PGD_OFF_MASK_BIT,29
+ lwzx r11,r12,r11 /* Get pgd/pmd entry */
+
+ /* Word 0 is EPN,V,TS,DSIZ */
+ li r12,PPC47x_TLB0_VALID | PPC47x_TLBE_SIZE
+ rlwimi r10,r12,0,32-PAGE_SHIFT,31 /* Insert valid and page size*/
+ li r12,0
+ tlbwe r10,r12,0
+
+ /* XXX can we do better ? Need to make sure tlbwe has established
+ * latch V bit in MMUCR0 before the PTE is loaded further down */
+#ifdef CONFIG_SMP
+ isync
+#endif
+
+ rlwinm. r12,r11,0,0,20 /* Extract pt base address */
+ /* Compute pte address */
+ rlwimi r12,r10,PPC44x_PTE_ADD_SHIFT,PPC44x_PTE_ADD_MASK_BIT,28
+ beq 2f /* Bail if no table */
+
+ lwz r11,0(r12) /* Get high word of pte entry */
+ /* XXX can we do better ? maybe insert a known 0 bit from r11 into the
+ * bottom of r12 to create a data dependency... We can also use r10
+ * as destination nowadays
+ */
+#ifdef CONFIG_SMP
+ lwsync
+#endif
+ lwz r12,4(r12) /* Get low word of pte entry */
+
+ andc. r13,r13,r12 /* Check permission */
+
+ /* Jump to common TLB load point */
+ beq finish_tlb_load_47x
+
+2: /* The bailout. Restore registers to pre-exception conditions
+ * and call the heavyweights to help us out.
+ */
+ mfspr r11, SPRN_SPRG_RSCRATCH4
+ mtcr r11
+ mfspr r13, SPRN_SPRG_RSCRATCH3
+ mfspr r12, SPRN_SPRG_RSCRATCH2
+ mfspr r11, SPRN_SPRG_RSCRATCH1
+ mfspr r10, SPRN_SPRG_RSCRATCH0
+ b InstructionStorage
+
+/*
+ * Both the instruction and data TLB miss get to this
+ * point to load the TLB.
+ * r10 - free to use
+ * r11 - PTE high word value
+ * r12 - PTE low word value
+ * r13 - free to use
+ * MMUCR - loaded with proper value when we get here
+ * Upon exit, we reload everything and RFI.
+ */
+finish_tlb_load_47x:
+ /* Combine RPN & ERPN an write WS 1 */
+ rlwimi r11,r12,0,0,31-PAGE_SHIFT
+ tlbwe r11,r13,1
+
+ /* And make up word 2 */
+ li r10,0xf85 /* Mask to apply from PTE */
+ rlwimi r10,r12,29,30,30 /* DIRTY -> SW position */
+ and r11,r12,r10 /* Mask PTE bits to keep */
+ andi. r10,r12,_PAGE_USER /* User page ? */
+ beq 1f /* nope, leave U bits empty */
+ rlwimi r11,r11,3,26,28 /* yes, copy S bits to U */
+1: tlbwe r11,r13,2
+
+ /* Done...restore registers and get out of here.
+ */
+ mfspr r11, SPRN_SPRG_RSCRATCH4
+ mtcr r11
+ mfspr r13, SPRN_SPRG_RSCRATCH3
+ mfspr r12, SPRN_SPRG_RSCRATCH2
+ mfspr r11, SPRN_SPRG_RSCRATCH1
+ mfspr r10, SPRN_SPRG_RSCRATCH0
+ rfi
+
+#endif /* CONFIG_PPC_47x */
+
+ /* Debug Interrupt */
+ /*
+ * This statement needs to exist at the end of the IVPR
+ * definition just in case you end up taking a debug
+ * exception within another exception.
+ */
+ DEBUG_CRIT_EXCEPTION
+
/*
* Global functions
*/
@@ -491,9 +705,18 @@ _GLOBAL(set_context)
/*
* Init CPU state. This is called at boot time or for secondary CPUs
* to setup initial TLB entries, setup IVORs, etc...
+ *
*/
_GLOBAL(init_cpu_state)
mflr r22
+#ifdef CONFIG_PPC_47x
+ /* We use the PVR to differenciate 44x cores from 476 */
+ mfspr r3,SPRN_PVR
+ srwi r3,r3,16
+ cmplwi cr0,r3,PVR_476@h
+ beq head_start_47x
+#endif /* CONFIG_PPC_47x */
+
/*
* In case the firmware didn't do it, we apply some workarounds
* that are good for all 440 core variants here
@@ -506,7 +729,7 @@ _GLOBAL(init_cpu_state)
sync
/*
- * Set up the initial MMU state
+ * Set up the initial MMU state for 44x
*
* We are still executing code at the virtual address
* mappings set by the firmware for the base of RAM.
@@ -646,16 +869,257 @@ skpinv: addi r4,r4,1 /* Increment */
SET_IVOR(10, Decrementer);
SET_IVOR(11, FixedIntervalTimer);
SET_IVOR(12, WatchdogTimer);
- SET_IVOR(13, DataTLBError);
- SET_IVOR(14, InstructionTLBError);
+ SET_IVOR(13, DataTLBError44x);
+ SET_IVOR(14, InstructionTLBError44x);
SET_IVOR(15, DebugCrit);
+ b head_start_common
+
+
+#ifdef CONFIG_PPC_47x
+
+#ifdef CONFIG_SMP
+
+/* Entry point for secondary 47x processors */
+_GLOBAL(start_secondary_47x)
+ mr r24,r3 /* CPU number */
+
+ bl init_cpu_state
+
+ /* Now we need to bolt the rest of kernel memory which
+ * is done in C code. We must be careful because our task
+ * struct or our stack can (and will probably) be out
+ * of reach of the initial 256M TLB entry, so we use a
+ * small temporary stack in .bss for that. This works
+ * because only one CPU at a time can be in this code
+ */
+ lis r1,temp_boot_stack@h
+ ori r1,r1,temp_boot_stack@l
+ addi r1,r1,1024-STACK_FRAME_OVERHEAD
+ li r0,0
+ stw r0,0(r1)
+ bl mmu_init_secondary
+
+ /* Now we can get our task struct and real stack pointer */
+
+ /* Get current_thread_info and current */
+ lis r1,secondary_ti@ha
+ lwz r1,secondary_ti@l(r1)
+ lwz r2,TI_TASK(r1)
+
+ /* Current stack pointer */
+ addi r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
+ li r0,0
+ stw r0,0(r1)
+
+ /* Kernel stack for exception entry in SPRG3 */
+ addi r4,r2,THREAD /* init task's THREAD */
+ mtspr SPRN_SPRG3,r4
+
+ b start_secondary
+
+#endif /* CONFIG_SMP */
+
+/*
+ * Set up the initial MMU state for 44x
+ *
+ * We are still executing code at the virtual address
+ * mappings set by the firmware for the base of RAM.
+ */
+
+head_start_47x:
+ /* Load our current PID->MMUCR TID and MSR IS->MMUCR STS */
+ mfspr r3,SPRN_PID /* Get PID */
+ mfmsr r4 /* Get MSR */
+ andi. r4,r4,MSR_IS@l /* TS=1? */
+ beq 1f /* If not, leave STS=0 */
+ oris r3,r3,PPC47x_MMUCR_STS@h /* Set STS=1 */
+1: mtspr SPRN_MMUCR,r3 /* Put MMUCR */
+ sync
+
+ /* Find the entry we are running from */
+ bl 1f
+1: mflr r23
+ tlbsx r23,0,r23
+ tlbre r24,r23,0
+ tlbre r25,r23,1
+ tlbre r26,r23,2
+
+/*
+ * Cleanup time
+ */
+
+ /* Initialize MMUCR */
+ li r5,0
+ mtspr SPRN_MMUCR,r5
+ sync
+
+clear_all_utlb_entries:
+
+ #; Set initial values.
+
+ addis r3,0,0x8000
+ addi r4,0,0
+ addi r5,0,0
+ b clear_utlb_entry
+
+ #; Align the loop to speed things up.
+
+ .align 6
+
+clear_utlb_entry:
+
+ tlbwe r4,r3,0
+ tlbwe r5,r3,1
+ tlbwe r5,r3,2
+ addis r3,r3,0x2000
+ cmpwi r3,0
+ bne clear_utlb_entry
+ addis r3,0,0x8000
+ addis r4,r4,0x100
+ cmpwi r4,0
+ bne clear_utlb_entry
+
+ #; Restore original entry.
+
+ oris r23,r23,0x8000 /* specify the way */
+ tlbwe r24,r23,0
+ tlbwe r25,r23,1
+ tlbwe r26,r23,2
+
+/*
+ * Configure and load pinned entry into TLB for the kernel core
+ */
+
+ lis r3,PAGE_OFFSET@h
+ ori r3,r3,PAGE_OFFSET@l
+
+ /* Kernel is at the base of RAM */
+ li r4, 0 /* Load the kernel physical address */
+
+ /* Load the kernel PID = 0 */
+ li r0,0
+ mtspr SPRN_PID,r0
+ sync
+
+ /* Word 0 */
+ clrrwi r3,r3,12 /* Mask off the effective page number */
+ ori r3,r3,PPC47x_TLB0_VALID | PPC47x_TLB0_256M
+
+ /* Word 1 */
+ clrrwi r4,r4,12 /* Mask off the real page number */
+ /* ERPN is 0 for first 4GB page */
+ /* Word 2 */
+ li r5,0
+ ori r5,r5,PPC47x_TLB2_S_RWX
+#ifdef CONFIG_SMP
+ ori r5,r5,PPC47x_TLB2_M
+#endif
+
+ /* We write to way 0 and bolted 0 */
+ lis r0,0x8800
+ tlbwe r3,r0,0
+ tlbwe r4,r0,1
+ tlbwe r5,r0,2
+
+/*
+ * Configure SSPCR, ISPCR and USPCR for now to search everything, we can fix
+ * them up later
+ */
+ LOAD_REG_IMMEDIATE(r3, 0x9abcdef0)
+ mtspr SPRN_SSPCR,r3
+ mtspr SPRN_USPCR,r3
+ LOAD_REG_IMMEDIATE(r3, 0x12345670)
+ mtspr SPRN_ISPCR,r3
+
+ /* Force context change */
+ mfmsr r0
+ mtspr SPRN_SRR1, r0
+ lis r0,3f@h
+ ori r0,r0,3f@l
+ mtspr SPRN_SRR0,r0
+ sync
+ rfi
+
+ /* Invalidate original entry we used */
+3:
+ rlwinm r24,r24,0,21,19 /* clear the "valid" bit */
+ tlbwe r24,r23,0
+ addi r24,0,0
+ tlbwe r24,r23,1
+ tlbwe r24,r23,2
+ isync /* Clear out the shadow TLB entries */
+
+#ifdef CONFIG_PPC_EARLY_DEBUG_44x
+ /* Add UART mapping for early debug. */
+
+ /* Word 0 */
+ lis r3,PPC44x_EARLY_DEBUG_VIRTADDR@h
+ ori r3,r3,PPC47x_TLB0_VALID | PPC47x_TLB0_TS | PPC47x_TLB0_1M
+
+ /* Word 1 */
+ lis r4,CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW@h
+ ori r4,r4,CONFIG_PPC_EARLY_DEBUG_44x_PHYSHIGH
+
+ /* Word 2 */
+ li r5,(PPC47x_TLB2_S_RW | PPC47x_TLB2_IMG)
+
+ /* Bolted in way 0, bolt slot 5, we -hope- we don't hit the same
+ * congruence class as the kernel, we need to make sure of it at
+ * some point
+ */
+ lis r0,0x8d00
+ tlbwe r3,r0,0
+ tlbwe r4,r0,1
+ tlbwe r5,r0,2
+
+ /* Force context change */
+ isync
+#endif /* CONFIG_PPC_EARLY_DEBUG_44x */
+
+ /* Establish the interrupt vector offsets */
+ SET_IVOR(0, CriticalInput);
+ SET_IVOR(1, MachineCheckA);
+ SET_IVOR(2, DataStorage);
+ SET_IVOR(3, InstructionStorage);
+ SET_IVOR(4, ExternalInput);
+ SET_IVOR(5, Alignment);
+ SET_IVOR(6, Program);
+ SET_IVOR(7, FloatingPointUnavailable);
+ SET_IVOR(8, SystemCall);
+ SET_IVOR(9, AuxillaryProcessorUnavailable);
+ SET_IVOR(10, Decrementer);
+ SET_IVOR(11, FixedIntervalTimer);
+ SET_IVOR(12, WatchdogTimer);
+ SET_IVOR(13, DataTLBError47x);
+ SET_IVOR(14, InstructionTLBError47x);
+ SET_IVOR(15, DebugCrit);
+
+ /* We configure icbi to invalidate 128 bytes at a time since the
+ * current 32-bit kernel code isn't too happy with icache != dcache
+ * block size
+ */
+ mfspr r3,SPRN_CCR0
+ oris r3,r3,0x0020
+ mtspr SPRN_CCR0,r3
+ isync
+
+#endif /* CONFIG_PPC_47x */
+
+/*
+ * Here we are back to code that is common between 44x and 47x
+ *
+ * We proceed to further kernel initialization and return to the
+ * main kernel entry
+ */
+head_start_common:
/* Establish the interrupt vector base */
lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */
mtspr SPRN_IVPR,r4
addis r22,r22,KERNELBASE@h
mtlr r22
+ isync
blr
/*
@@ -683,3 +1147,9 @@ swapper_pg_dir:
*/
abatron_pteptrs:
.space 8
+
+#ifdef CONFIG_SMP
+ .align 12
+temp_boot_stack:
+ .space 1024
+#endif /* CONFIG_SMP */
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 8649f53..8043d1b 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -441,7 +441,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
addi r3,r3,L1_CACHE_BYTES
bdnz 0b
sync
-#ifndef CONFIG_44x
+#ifdef CONFIG_44x
/* We don't flush the icache on 44x. Those have a virtual icache
* and we don't have access to the virtual address here (it's
* not the page vaddr but where it's mapped in user space). The
@@ -449,15 +449,19 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
* a change in the address space occurs, before returning to
* user space
*/
+BEGIN_MMU_FTR_SECTION
+ blr
+END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_44x)
+#endif /* CONFIG_44x */
mtctr r4
1: icbi 0,r6
addi r6,r6,L1_CACHE_BYTES
bdnz 1b
sync
isync
-#endif /* CONFIG_44x */
blr
+#ifndef CONFIG_BOOKE
/*
* Flush a particular page from the data cache to RAM, identified
* by its physical address. We turn off the MMU so we can just use
@@ -490,6 +494,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
mtmsr r10 /* restore DR */
isync
blr
+#endif /* CONFIG_BOOKE */
/*
* Clear pages using the dcbz instruction, which doesn't cause any
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index c2ee144..484e83f 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -495,6 +495,14 @@ int __devinit start_secondary(void *unused)
current->active_mm = &init_mm;
smp_store_cpu_info(cpu);
+
+#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+ /* Clear any pending timer interrupts */
+ mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);
+
+ /* Enable decrementer interrupt */
+ mtspr(SPRN_TCR, TCR_DIE);
+#endif
set_dec(tb_ticks_per_jiffy);
preempt_disable();
cpu_callin_map[cpu] = 1;
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c
index 3986264..d8c6efb 100644
--- a/arch/powerpc/mm/44x_mmu.c
+++ b/arch/powerpc/mm/44x_mmu.c
@@ -38,7 +38,9 @@ unsigned int tlb_44x_index; /* = 0 */
unsigned int tlb_44x_hwater = PPC44x_TLB_SIZE - 1 - PPC44x_EARLY_TLBS;
int icache_44x_need_flush;
-static void __init ppc44x_update_tlb_hwater(void)
+unsigned long tlb_47x_boltmap[1024/8];
+
+static void __cpuinit ppc44x_update_tlb_hwater(void)
{
extern unsigned int tlb_44x_patch_hwater_D[];
extern unsigned int tlb_44x_patch_hwater_I[];
@@ -59,7 +61,7 @@ static void __init ppc44x_update_tlb_hwater(void)
}
/*
- * "Pins" a 256MB TLB entry in AS0 for kernel lowmem
+ * "Pins" a 256MB TLB entry in AS0 for kernel lowmem for 44x type MMU
*/
static void __init ppc44x_pin_tlb(unsigned int virt, unsigned int phys)
{
@@ -67,12 +69,18 @@ static void __init ppc44x_pin_tlb(unsigned int virt, unsigned int phys)
ppc44x_update_tlb_hwater();
+ mtspr(SPRN_MMUCR, 0);
+
__asm__ __volatile__(
"tlbwe %2,%3,%4\n"
"tlbwe %1,%3,%5\n"
"tlbwe %0,%3,%6\n"
:
+#ifdef CONFIG_PPC47x
+ : "r" (PPC47x_TLB2_S_RWX),
+#else
: "r" (PPC44x_TLB_SW | PPC44x_TLB_SR | PPC44x_TLB_SX | PPC44x_TLB_G),
+#endif
"r" (phys),
"r" (virt | PPC44x_TLB_VALID | PPC44x_TLB_256M),
"r" (entry),
@@ -81,8 +89,93 @@ static void __init ppc44x_pin_tlb(unsigned int virt, unsigned int phys)
"i" (PPC44x_TLB_ATTRIB));
}
+static int __init ppc47x_find_free_bolted(void)
+{
+ unsigned int mmube0 = mfspr(SPRN_MMUBE0);
+ unsigned int mmube1 = mfspr(SPRN_MMUBE1);
+
+ if (!(mmube0 & MMUBE0_VBE0))
+ return 0;
+ if (!(mmube0 & MMUBE0_VBE1))
+ return 1;
+ if (!(mmube0 & MMUBE0_VBE2))
+ return 2;
+ if (!(mmube1 & MMUBE1_VBE3))
+ return 3;
+ if (!(mmube1 & MMUBE1_VBE4))
+ return 4;
+ if (!(mmube1 & MMUBE1_VBE5))
+ return 5;
+ return -1;
+}
+
+static void __init ppc47x_update_boltmap(void)
+{
+ unsigned int mmube0 = mfspr(SPRN_MMUBE0);
+ unsigned int mmube1 = mfspr(SPRN_MMUBE1);
+
+ if (mmube0 & MMUBE0_VBE0)
+ __set_bit((mmube0 >> MMUBE0_IBE0_SHIFT) & 0xff,
+ tlb_47x_boltmap);
+ if (mmube0 & MMUBE0_VBE1)
+ __set_bit((mmube0 >> MMUBE0_IBE1_SHIFT) & 0xff,
+ tlb_47x_boltmap);
+ if (mmube0 & MMUBE0_VBE2)
+ __set_bit((mmube0 >> MMUBE0_IBE2_SHIFT) & 0xff,
+ tlb_47x_boltmap);
+ if (mmube1 & MMUBE1_VBE3)
+ __set_bit((mmube1 >> MMUBE1_IBE3_SHIFT) & 0xff,
+ tlb_47x_boltmap);
+ if (mmube1 & MMUBE1_VBE4)
+ __set_bit((mmube1 >> MMUBE1_IBE4_SHIFT) & 0xff,
+ tlb_47x_boltmap);
+ if (mmube1 & MMUBE1_VBE5)
+ __set_bit((mmube1 >> MMUBE1_IBE5_SHIFT) & 0xff,
+ tlb_47x_boltmap);
+}
+
+/*
+ * "Pins" a 256MB TLB entry in AS0 for kernel lowmem for 47x type MMU
+ */
+static void __cpuinit ppc47x_pin_tlb(unsigned int virt, unsigned int phys)
+{
+ unsigned int rA;
+ int bolted;
+
+ /* Base rA is HW way select, way 0, bolted bit set */
+ rA = 0x88000000;
+
+ /* Look for a bolted entry slot */
+ bolted = ppc47x_find_free_bolted();
+ BUG_ON(bolted < 0);
+
+ /* Insert bolted slot number */
+ rA |= bolted << 24;
+
+ pr_debug("256M TLB entry for 0x%08x->0x%08x in bolt slot %d\n",
+ virt, phys, bolted);
+
+ mtspr(SPRN_MMUCR, 0);
+
+ __asm__ __volatile__(
+ "tlbwe %2,%3,0\n"
+ "tlbwe %1,%3,1\n"
+ "tlbwe %0,%3,2\n"
+ :
+ : "r" (PPC47x_TLB2_SW | PPC47x_TLB2_SR |
+ PPC47x_TLB2_SX
+#ifdef CONFIG_SMP
+ | PPC47x_TLB2_M
+#endif
+ ),
+ "r" (phys),
+ "r" (virt | PPC47x_TLB0_VALID | PPC47x_TLB0_256M),
+ "r" (rA));
+}
+
void __init MMU_init_hw(void)
{
+ /* This is not useful on 47x but won't hurt either */
ppc44x_update_tlb_hwater();
flush_instruction_cache();
@@ -95,8 +188,51 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
/* Pin in enough TLBs to cover any lowmem not covered by the
* initial 256M mapping established in head_44x.S */
for (addr = PPC_PIN_SIZE; addr < lowmem_end_addr;
- addr += PPC_PIN_SIZE)
- ppc44x_pin_tlb(addr + PAGE_OFFSET, addr);
+ addr += PPC_PIN_SIZE) {
+ if (mmu_has_feature(MMU_FTR_TYPE_47x))
+ ppc47x_pin_tlb(addr + PAGE_OFFSET, addr);
+ else
+ ppc44x_pin_tlb(addr + PAGE_OFFSET, addr);
+ }
+ if (mmu_has_feature(MMU_FTR_TYPE_47x)) {
+ ppc47x_update_boltmap();
+#ifdef DEBUG
+ {
+ int i;
+
+ printk(KERN_DEBUG "bolted entries: ");
+ for (i = 0; i < 255; i++) {
+ if (test_bit(i, tlb_47x_boltmap))
+ printk("%d ", i);
+ }
+ printk("\n");
+ }
+#endif /* DEBUG */
+ }
return total_lowmem;
}
+
+#ifdef CONFIG_SMP
+void __cpuinit mmu_init_secondary(int cpu)
+{
+ unsigned long addr;
+
+ /* Pin in enough TLBs to cover any lowmem not covered by the
+ * initial 256M mapping established in head_44x.S
+ *
+ * WARNING: This is called with only the first 256M of the
+ * linear mapping in the TLB and we can't take faults yet
+ * so beware of what this code uses. It runs off a temporary
+ * stack. current (r2) isn't initialized, smp_processor_id()
+ * will not work, current thread info isn't accessible, ...
+ */
+ for (addr = PPC_PIN_SIZE; addr < lowmem_end_addr;
+ addr += PPC_PIN_SIZE) {
+ if (mmu_has_feature(MMU_FTR_TYPE_47x))
+ ppc47x_pin_tlb(addr + PAGE_OFFSET, addr);
+ else
+ ppc44x_pin_tlb(addr + PAGE_OFFSET, addr);
+ }
+}
+#endif /* CONFIG_SMP */
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c
index 1044a63..49e7b2f 100644
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -394,10 +394,18 @@ void __init mmu_context_init(void)
* the PID/TID comparison is disabled, so we can use a TID of zero
* to represent all kernel pages as shared among all contexts.
* -- Dan
+ *
+ * The IBM 47x core supports 16-bit PIDs, thus 65535 contexts. We
+ * should normally never have to steal though the facility is
+ * present if needed.
+ * -- BenH
*/
if (mmu_has_feature(MMU_FTR_TYPE_8xx)) {
first_context = 0;
last_context = 15;
+ } else if (mmu_has_feature(MMU_FTR_TYPE_47x)) {
+ first_context = 1;
+ last_context = 65535;
} else {
first_context = 1;
last_context = 255;
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index d49a775..eb11d5d 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -69,12 +69,7 @@ static inline void _tlbil_va(unsigned long address, unsigned int pid,
}
#endif /* CONIFG_8xx */
-/*
- * As of today, we don't support tlbivax broadcast on any
- * implementation. When that becomes the case, this will be
- * an extern.
- */
-#ifdef CONFIG_PPC_BOOK3E
+#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x)
extern void _tlbivax_bcast(unsigned long address, unsigned int pid,
unsigned int tsize, unsigned int ind);
#else
diff --git a/arch/powerpc/mm/tlb_nohash_low.S b/arch/powerpc/mm/tlb_nohash_low.S
index bbdc5b5..e925cb5 100644
--- a/arch/powerpc/mm/tlb_nohash_low.S
+++ b/arch/powerpc/mm/tlb_nohash_low.S
@@ -10,7 +10,7 @@
* - tlbil_va
* - tlbil_pid
* - tlbil_all
- * - tlbivax_bcast (not yet)
+ * - tlbivax_bcast
*
* Code mostly moved over from misc_32.S
*
@@ -33,6 +33,7 @@
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
#include <asm/processor.h>
+#include <asm/bug.h>
#if defined(CONFIG_40x)
@@ -65,7 +66,7 @@ _GLOBAL(__tlbil_va)
* Nothing to do for 8xx, everything is inline
*/
-#elif defined(CONFIG_44x)
+#elif defined(CONFIG_44x) /* Includes 47x */
/*
* 440 implementation uses tlbsx/we for tlbil_va and a full sweep
@@ -73,7 +74,13 @@ _GLOBAL(__tlbil_va)
*/
_GLOBAL(__tlbil_va)
mfspr r5,SPRN_MMUCR
- rlwimi r5,r4,0,24,31 /* Set TID */
+ mfmsr r10
+
+ /*
+ * We write 16 bits of STID since 47x supports that much, we
+ * will never be passed out of bounds values on 440 (hopefully)
+ */
+ rlwimi r5,r4,0,16,31
/* We have to run the search with interrupts disabled, otherwise
* an interrupt which causes a TLB miss can clobber the MMUCR
@@ -83,24 +90,41 @@ _GLOBAL(__tlbil_va)
* and restoring MMUCR, so only normal interrupts have to be
* taken care of.
*/
- mfmsr r4
wrteei 0
mtspr SPRN_MMUCR,r5
- tlbsx. r3, 0, r3
- wrtee r4
- bne 1f
+ tlbsx. r6,0,r3
+ bne 10f
sync
- /* There are only 64 TLB entries, so r3 < 64,
- * which means bit 22, is clear. Since 22 is
- * the V bit in the TLB_PAGEID, loading this
+BEGIN_MMU_FTR_SECTION
+ b 2f
+END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_47x)
+ /* On 440 There are only 64 TLB entries, so r3 < 64, which means bit
+ * 22, is clear. Since 22 is the V bit in the TLB_PAGEID, loading this
* value will invalidate the TLB entry.
*/
- tlbwe r3, r3, PPC44x_TLB_PAGEID
+ tlbwe r6,r6,PPC44x_TLB_PAGEID
isync
-1: blr
+10: wrtee r10
+ blr
+2:
+#ifdef CONFIG_PPC_47x
+ oris r7,r6,0x8000 /* specify way explicitely */
+ clrrwi r4,r3,12 /* get an EPN for the hashing with V = 0 */
+ ori r4,r4,PPC47x_TLBE_SIZE
+ tlbwe r4,r7,0 /* write it */
+ isync
+ wrtee r10
+ blr
+#else /* CONFIG_PPC_47x */
+1: trap
+ EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0;
+#endif /* !CONFIG_PPC_47x */
_GLOBAL(_tlbil_all)
_GLOBAL(_tlbil_pid)
+BEGIN_MMU_FTR_SECTION
+ b 2f
+END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_47x)
li r3,0
sync
@@ -115,6 +139,76 @@ _GLOBAL(_tlbil_pid)
isync
blr
+2:
+#ifdef CONFIG_PPC_47x
+ /* 476 variant. There's not simple way to do this, hopefully we'll
+ * try to limit the amount of such full invalidates
+ */
+ mfmsr r11 /* Interrupts off */
+ wrteei 0
+ li r3,-1 /* Current set */
+ lis r10,tlb_47x_boltmap@h
+ ori r10,r10,tlb_47x_boltmap@l
+ lis r7,0x8000 /* Specify way explicitely */
+
+ b 9f /* For each set */
+
+1: li r9,4 /* Number of ways */
+ li r4,0 /* Current way */
+ li r6,0 /* Default entry value 0 */
+ andi. r0,r8,1 /* Check if way 0 is bolted */
+ mtctr r9 /* Load way counter */
+ bne- 3f /* Bolted, skip loading it */
+
+2: /* For each way */
+ or r5,r3,r4 /* Make way|index for tlbre */
+ rlwimi r5,r5,16,8,15 /* Copy index into position */
+ tlbre r6,r5,0 /* Read entry */
+3: addis r4,r4,0x2000 /* Next way */
+ andi. r0,r6,PPC47x_TLB0_VALID /* Valid entry ? */
+ beq 4f /* Nope, skip it */
+ rlwimi r7,r5,0,1,2 /* Insert way number */
+ rlwinm r6,r6,0,21,19 /* Clear V */
+ tlbwe r6,r7,0 /* Write it */
+4: bdnz 2b /* Loop for each way */
+ srwi r8,r8,1 /* Next boltmap bit */
+9: cmpwi cr1,r3,255 /* Last set done ? */
+ addi r3,r3,1 /* Next set */
+ beq cr1,1f /* End of loop */
+ andi. r0,r3,0x1f /* Need to load a new boltmap word ? */
+ bne 1b /* No, loop */
+ lwz r8,0(r10) /* Load boltmap entry */
+ addi r10,r10,4 /* Next word */
+ b 1b /* Then loop */
+1: isync /* Sync shadows */
+ wrtee r11
+#else /* CONFIG_PPC_47x */
+1: trap
+ EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0;
+#endif /* !CONFIG_PPC_47x */
+ blr
+
+#ifdef CONFIG_PPC_47x
+/*
+ * _tlbivax_bcast is only on 47x. We don't bother doing a runtime
+ * check though, it will blow up soon enough if we mistakenly try
+ * to use it on a 440.
+ */
+_GLOBAL(_tlbivax_bcast)
+ mfspr r5,SPRN_MMUCR
+ mfmsr r10
+ rlwimi r5,r4,0,16,31
+ wrteei 0
+ mtspr SPRN_MMUCR,r5
+/* tlbivax 0,r3 - use .long to avoid binutils deps */
+ .long 0x7c000624 | (r3 << 11)
+ isync
+ eieio
+ tlbsync
+ sync
+ wrtee r10
+ blr
+#endif /* CONFIG_PPC_47x */
#elif defined(CONFIG_FSL_BOOKE)
/*
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 7486bff..9365e53 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -1,3 +1,12 @@
+config PPC_47x
+ bool "Support for 47x variant"
+ depends on 44x
+ default n
+ select MPIC
+ help
+ This option enables support for the 47x family of processors and is
+ not currently compatible with other 44x or 46x varients
+
config BAMBOO
bool "Bamboo"
depends on 44x
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index fa0f690..cf84169 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -43,7 +43,7 @@ config 40x
select PPC_PCI_CHOICE
config 44x
- bool "AMCC 44x"
+ bool "AMCC 44x, 46x or 47x"
select PPC_DCR_NATIVE
select PPC_UDBG_16550
select 4xx_SOC
@@ -284,7 +284,7 @@ config PPC_PERF_CTRS
This enables the powerpc-specific perf_event back-end.
config SMP
- depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE
+ depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
bool "Symmetric multi-processing support"
---help---
This enables support for systems with more than one CPU. If you have
@@ -312,6 +312,7 @@ config NR_CPUS
config NOT_COHERENT_CACHE
bool
depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
+ default n if PPC_47x
default y
config CHECK_CACHE_COHERENCY
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 05/13] powerpc/476: Add isync after loading mmu and debug spr's
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (3 preceding siblings ...)
2010-03-05 20:43 ` [PATCH 03/13] powerpc/47x: Base ppc476 support Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-07 23:08 ` Hollis Blanchard
2010-03-05 20:43 ` [PATCH 07/13] powerpc/47x: defconfig for 476 on the iss 4xx simulator Dave Kleikamp
` (7 subsequent siblings)
12 siblings, 1 reply; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/476: Add isync after loading mmu and debug spr's
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
476 requires an isync after loading MMU and debug related SPR's. Some of
these are in performance-critical paths and may need to be optimized, but
initially, we're playing it safe.
Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/kernel/head_44x.S | 8 ++++++++
arch/powerpc/kernel/kprobes.c | 3 +++
arch/powerpc/kernel/process.c | 3 +++
arch/powerpc/kernel/traps.c | 6 ++++++
arch/powerpc/mm/44x_mmu.c | 1 +
arch/powerpc/mm/tlb_nohash_low.S | 3 +++
6 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 1acd175..992e9d5 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -464,6 +464,9 @@ finish_tlb_load_44x:
lwz r11,PGDIR(r11)
mfspr r12,SPRN_PID /* Get PID */
4: mtspr SPRN_MMUCR,r12 /* Set MMUCR */
+#ifdef CONFIG_PPC_47x
+ isync
+#endif
/* Mask of required permission bits. Note that while we
* do copy ESR:ST to _PAGE_RW position as trying to write
@@ -561,6 +564,9 @@ finish_tlb_load_44x:
lwz r11,PGDIR(r11)
mfspr r12,SPRN_PID /* Get PID */
4: mtspr SPRN_MMUCR,r12 /* Set MMUCR */
+#ifdef CONFIG_PPC_47x
+ isync
+#endif
/* Make up the required permissions */
li r13,_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_EXEC
@@ -1031,6 +1037,7 @@ clear_utlb_entry:
mtspr SPRN_USPCR,r3
LOAD_REG_IMMEDIATE(r3, 0x12345670)
mtspr SPRN_ISPCR,r3
+ isync /* 476 needs this */
/* Force context change */
mfmsr r0
@@ -1116,6 +1123,7 @@ head_start_common:
/* Establish the interrupt vector base */
lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */
mtspr SPRN_IVPR,r4
+ isync /* 476 needs this */
addis r22,r22,KERNELBASE@h
mtlr r22
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index c932978..7fec5db 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -113,6 +113,9 @@ static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
#ifdef CONFIG_BOOKE
regs->msr &= ~MSR_CE;
mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
+#ifdef CONFIG_PPC_47x
+ isync();
+#endif
#endif
/*
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 7b816da..15ee756 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -286,6 +286,9 @@ int set_dabr(unsigned long dabr)
/* XXX should we have a CPU_FTR_HAS_DABR ? */
#if defined(CONFIG_BOOKE)
mtspr(SPRN_DAC1, dabr);
+#ifdef CONFIG_PPC_47x
+ isync();
+#endif
#elif defined(CONFIG_PPC_BOOK3S)
mtspr(SPRN_DABR, dabr);
#endif
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 21ed77b..9957c44 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1080,6 +1080,9 @@ void __kprobes DebugException(struct pt_regs *regs, unsigned long debug_status)
mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) & ~DBCR0_BT);
/* Clear the BT event */
mtspr(SPRN_DBSR, DBSR_BT);
+#ifdef CONFIG_PPC_47x
+ isync();
+#endif
/* Do the single step trick only when coming from userspace */
if (user_mode(regs)) {
@@ -1102,6 +1105,9 @@ void __kprobes DebugException(struct pt_regs *regs, unsigned long debug_status)
mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) & ~DBCR0_IC);
/* Clear the instruction completion event */
mtspr(SPRN_DBSR, DBSR_IC);
+#ifdef CONFIG_PPC_47x
+ isync();
+#endif
if (notify_die(DIE_SSTEP, "single_step", regs, 5,
5, SIGTRAP) == NOTIFY_STOP) {
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c
index d8c6efb..a5f082a 100644
--- a/arch/powerpc/mm/44x_mmu.c
+++ b/arch/powerpc/mm/44x_mmu.c
@@ -156,6 +156,7 @@ static void __cpuinit ppc47x_pin_tlb(unsigned int virt, unsigned int phys)
virt, phys, bolted);
mtspr(SPRN_MMUCR, 0);
+ isync();
__asm__ __volatile__(
"tlbwe %2,%3,0\n"
diff --git a/arch/powerpc/mm/tlb_nohash_low.S b/arch/powerpc/mm/tlb_nohash_low.S
index e925cb5..7c890f7 100644
--- a/arch/powerpc/mm/tlb_nohash_low.S
+++ b/arch/powerpc/mm/tlb_nohash_low.S
@@ -92,6 +92,9 @@ _GLOBAL(__tlbil_va)
*/
wrteei 0
mtspr SPRN_MMUCR,r5
+#ifdef CONFIG_PPC_47x
+ isync
+#endif
tlbsx. r6,0,r3
bne 10f
sync
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 07/13] powerpc/47x: defconfig for 476 on the iss 4xx simulator
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (4 preceding siblings ...)
2010-03-05 20:43 ` [PATCH 05/13] powerpc/476: Add isync after loading mmu and debug spr's Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 08/13] powerpc/476: define specific cpu table entry DD1.1 core Dave Kleikamp
` (6 subsequent siblings)
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/47x: defconfig for 476 on the iss 4xx simulator
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/configs/44x/iss476-smp_defconfig | 1026 +++++++++++++++++++++++++
1 files changed, 1026 insertions(+), 0 deletions(-)
create mode 100644 arch/powerpc/configs/44x/iss476-smp_defconfig
diff --git a/arch/powerpc/configs/44x/iss476-smp_defconfig b/arch/powerpc/configs/44x/iss476-smp_defconfig
new file mode 100644
index 0000000..8683cbc
--- /dev/null
+++ b/arch/powerpc/configs/44x/iss476-smp_defconfig
@@ -0,0 +1,1026 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.33
+# Thu Mar 4 11:50:12 2010
+#
+# CONFIG_PPC64 is not set
+
+#
+# Processor support
+#
+# CONFIG_PPC_BOOK3S_32 is not set
+# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_8xx is not set
+# CONFIG_40x is not set
+CONFIG_44x=y
+# CONFIG_E200 is not set
+CONFIG_PPC_FPU=y
+CONFIG_4xx=y
+CONFIG_BOOKE=y
+CONFIG_PTE_64BIT=y
+CONFIG_PHYS_64BIT=y
+CONFIG_PPC_MMU_NOHASH=y
+CONFIG_PPC_MMU_NOHASH_32=y
+# CONFIG_PPC_MM_SLICES is not set
+CONFIG_SMP=y
+CONFIG_NR_CPUS=4
+# CONFIG_NOT_COHERENT_CACHE is not set
+CONFIG_PPC32=y
+CONFIG_WORD_SIZE=32
+CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
+CONFIG_MMU=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
+# CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
+# CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK is not set
+CONFIG_IRQ_PER_CPU=y
+CONFIG_NR_IRQS=512
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+# CONFIG_ARCH_NO_VIRT_TO_BUS is not set
+CONFIG_PPC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_GENERIC_NVRAM=y
+CONFIG_SCHED_OMIT_FRAME_POINTER=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_PPC_OF=y
+CONFIG_OF=y
+CONFIG_PPC_UDBG_16550=y
+CONFIG_GENERIC_TBSYNC=y
+CONFIG_AUDIT_ARCH=y
+CONFIG_GENERIC_BUG=y
+CONFIG_DTC=y
+# CONFIG_DEFAULT_UIMAGE is not set
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_PPC_DCR_NATIVE=y
+# CONFIG_PPC_DCR_MMIO is not set
+CONFIG_PPC_DCR=y
+CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+CONFIG_CONSTRUCTORS=y
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_LOCK_KERNEL=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+
+#
+# RCU Subsystem
+#
+CONFIG_TREE_RCU=y
+# CONFIG_TREE_PREEMPT_RCU is not set
+# CONFIG_TINY_RCU is not set
+# CONFIG_RCU_TRACE is not set
+CONFIG_RCU_FANOUT=32
+# CONFIG_RCU_FANOUT_EXACT is not set
+# CONFIG_TREE_RCU_TRACE is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_GROUP_SCHED=y
+CONFIG_FAIR_GROUP_SCHED=y
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_USER_SCHED=y
+# CONFIG_CGROUP_SCHED is not set
+# CONFIG_CGROUPS is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_RD_GZIP=y
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_LZMA is not set
+# CONFIG_RD_LZO is not set
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_ANON_INODES=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_EXTRA_PASS=y
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_AIO=y
+CONFIG_HAVE_PERF_EVENTS=y
+
+#
+# Kernel Performance Events And Counters
+#
+CONFIG_PERF_EVENTS=y
+CONFIG_EVENT_PROFILE=y
+# CONFIG_PERF_COUNTERS is not set
+# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+CONFIG_COMPAT_BRK=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+CONFIG_PROFILING=y
+CONFIG_TRACEPOINTS=y
+CONFIG_OPROFILE=y
+CONFIG_HAVE_OPROFILE=y
+# CONFIG_KPROBES is not set
+CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_HAVE_IOREMAP_PROT=y
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_DMA_ATTRS=y
+CONFIG_USE_GENERIC_SMP_HELPERS=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+
+#
+# GCOV-based kernel profiling
+#
+# CONFIG_GCOV_KERNEL is not set
+# CONFIG_SLOW_WORK is not set
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_STOP_MACHINE=y
+CONFIG_BLOCK=y
+CONFIG_LBDAF=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+# CONFIG_DEFAULT_DEADLINE is not set
+CONFIG_DEFAULT_CFQ=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="cfq"
+# CONFIG_INLINE_SPIN_TRYLOCK is not set
+# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
+# CONFIG_INLINE_SPIN_LOCK is not set
+# CONFIG_INLINE_SPIN_LOCK_BH is not set
+# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
+# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
+CONFIG_INLINE_SPIN_UNLOCK=y
+# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
+CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
+# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
+# CONFIG_INLINE_READ_TRYLOCK is not set
+# CONFIG_INLINE_READ_LOCK is not set
+# CONFIG_INLINE_READ_LOCK_BH is not set
+# CONFIG_INLINE_READ_LOCK_IRQ is not set
+# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
+CONFIG_INLINE_READ_UNLOCK=y
+# CONFIG_INLINE_READ_UNLOCK_BH is not set
+CONFIG_INLINE_READ_UNLOCK_IRQ=y
+# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
+# CONFIG_INLINE_WRITE_TRYLOCK is not set
+# CONFIG_INLINE_WRITE_LOCK is not set
+# CONFIG_INLINE_WRITE_LOCK_BH is not set
+# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
+# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
+CONFIG_INLINE_WRITE_UNLOCK=y
+# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
+CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
+# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+# CONFIG_FREEZER is not set
+
+#
+# Platform support
+#
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_PQ2ADS is not set
+CONFIG_PPC_47x=y
+# CONFIG_BAMBOO is not set
+# CONFIG_EBONY is not set
+# CONFIG_SAM440EP is not set
+# CONFIG_SEQUOIA is not set
+# CONFIG_TAISHAN is not set
+# CONFIG_KATMAI is not set
+# CONFIG_RAINIER is not set
+# CONFIG_WARP is not set
+# CONFIG_ARCHES is not set
+# CONFIG_CANYONLANDS is not set
+# CONFIG_GLACIER is not set
+# CONFIG_REDWOOD is not set
+# CONFIG_EIGER is not set
+# CONFIG_YOSEMITE is not set
+CONFIG_ISS4xx=y
+# CONFIG_XILINX_VIRTEX440_GENERIC_BOARD is not set
+# CONFIG_PPC44x_SIMPLE is not set
+# CONFIG_PPC4xx_GPIO is not set
+# CONFIG_IPIC is not set
+CONFIG_MPIC=y
+# CONFIG_MPIC_WEIRD is not set
+# CONFIG_PPC_I8259 is not set
+# CONFIG_PPC_RTAS is not set
+# CONFIG_MMIO_NVRAM is not set
+# CONFIG_PPC_MPC106 is not set
+# CONFIG_PPC_970_NAP is not set
+# CONFIG_PPC_INDIRECT_IO is not set
+# CONFIG_GENERIC_IOMAP is not set
+# CONFIG_CPU_FREQ is not set
+# CONFIG_FSL_ULI1575 is not set
+CONFIG_OF_RTC=y
+# CONFIG_SIMPLE_GPIO is not set
+
+#
+# Kernel options
+#
+# CONFIG_HIGHMEM is not set
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+CONFIG_HZ_100=y
+# CONFIG_HZ_250 is not set
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=100
+# CONFIG_SCHED_HRTICK is not set
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+# CONFIG_PREEMPT is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_HAVE_AOUT is not set
+# CONFIG_BINFMT_MISC is not set
+CONFIG_MATH_EMULATION=y
+# CONFIG_IOMMU_HELPER is not set
+# CONFIG_SWIOTLB is not set
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_HAS_WALK_MEMORY=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
+CONFIG_IRQ_ALL_CPUS=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_MAX_ACTIVE_REGIONS=32
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_MIGRATION=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+# CONFIG_KSM is not set
+CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
+CONFIG_STDBINUTILS=y
+CONFIG_PPC_4K_PAGES=y
+# CONFIG_PPC_16K_PAGES is not set
+# CONFIG_PPC_64K_PAGES is not set
+# CONFIG_PPC_256K_PAGES is not set
+CONFIG_FORCE_MAX_ZONEORDER=11
+CONFIG_PROC_DEVICETREE=y
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE="root=/dev/issblk0"
+CONFIG_EXTRA_TARGETS=""
+CONFIG_SECCOMP=y
+CONFIG_ISA_DMA_API=y
+
+#
+# Bus options
+#
+CONFIG_ZONE_DMA=y
+CONFIG_4xx_SOC=y
+CONFIG_PPC_PCI_CHOICE=y
+# CONFIG_PCI is not set
+# CONFIG_PCI_DOMAINS is not set
+# CONFIG_PCI_SYSCALL is not set
+# CONFIG_ARCH_SUPPORTS_MSI is not set
+# CONFIG_PCCARD is not set
+# CONFIG_HAS_RAPIDIO is not set
+
+#
+# Advanced setup
+#
+# CONFIG_ADVANCED_OPTIONS is not set
+
+#
+# Default settings for advanced configuration options are used
+#
+CONFIG_LOWMEM_SIZE=0x30000000
+CONFIG_PAGE_OFFSET=0xc0000000
+CONFIG_KERNEL_START=0xc0000000
+CONFIG_PHYSICAL_START=0x00000000
+CONFIG_TASK_SIZE=0xc0000000
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_RDS is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_NET_DSA is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_PHONET is not set
+# CONFIG_IEEE802154 is not set
+# CONFIG_NET_SCHED is not set
+# CONFIG_DCB is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_NET_DROP_MONITOR is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+CONFIG_WIRELESS=y
+# CONFIG_CFG80211 is not set
+# CONFIG_LIB80211 is not set
+
+#
+# CFG80211 needs to be enabled for MAC80211
+#
+# CONFIG_WIMAX is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+# CONFIG_DEVTMPFS is not set
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+CONFIG_FIRMWARE_IN_KERNEL=y
+CONFIG_EXTRA_FIRMWARE=""
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_CONNECTOR=y
+CONFIG_PROC_EVENTS=y
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_TESTS is not set
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_REDBOOT_PARTS is not set
+# CONFIG_MTD_CMDLINE_PARTS is not set
+CONFIG_MTD_OF_PARTS=y
+# CONFIG_MTD_AR7_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=y
+CONFIG_MTD_BLOCK=y
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_SSFDC is not set
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+# CONFIG_MTD_CFI is not set
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP_OF=y
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# LPDDR flash memory drivers
+#
+# CONFIG_MTD_LPDDR is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+CONFIG_OF_DEVICE=y
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_DRBD is not set
+# CONFIG_BLK_DEV_NBD is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=35000
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_XILINX_SYSACE is not set
+# CONFIG_BLK_DEV_HD is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_ENCLOSURE_SERVICES is not set
+# CONFIG_C2PORT is not set
+
+#
+# EEPROM support
+#
+# CONFIG_EEPROM_93CX6 is not set
+CONFIG_HAVE_IDE=y
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_MACINTOSH_DRIVERS is not set
+# CONFIG_NETDEVICES is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+CONFIG_DEVKMEM=y
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_UARTLITE is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+CONFIG_SERIAL_OF_PLATFORM=y
+# CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL is not set
+# CONFIG_SERIAL_GRLIB_GAISLER_APBUART is not set
+CONFIG_UNIX98_PTYS=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_HVC_UDBG is not set
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_NVRAM is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+
+#
+# PPS support
+#
+# CONFIG_PPS is not set
+CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
+# CONFIG_GPIOLIB is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+CONFIG_THERMAL=y
+# CONFIG_WATCHDOG is not set
+CONFIG_SSB_POSSIBLE=y
+
+#
+# Sonics Silicon Backplane
+#
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_MFD_TMIO is not set
+# CONFIG_REGULATOR is not set
+# CONFIG_MEDIA_SUPPORT is not set
+
+#
+# Graphics support
+#
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+# CONFIG_SOUND is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_EDAC is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
+# CONFIG_AUXDISPLAY is not set
+# CONFIG_UIO is not set
+
+#
+# TI VLYNQ
+#
+# CONFIG_STAGING is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+CONFIG_EXT3_FS=y
+# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
+CONFIG_EXT3_FS_XATTR=y
+CONFIG_EXT3_FS_POSIX_ACL=y
+CONFIG_EXT3_FS_SECURITY=y
+# CONFIG_EXT4_FS is not set
+CONFIG_JBD=y
+# CONFIG_JBD_DEBUG is not set
+CONFIG_FS_MBCACHE=y
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+CONFIG_FS_POSIX_ACL=y
+# CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_BTRFS_FS is not set
+# CONFIG_NILFS2_FS is not set
+CONFIG_FILE_LOCKING=y
+CONFIG_FSNOTIFY=y
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# Caches
+#
+# CONFIG_FSCACHE is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+CONFIG_MISC_FILESYSTEMS=y
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=y
+# CONFIG_SQUASHFS is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+# CONFIG_NETWORK_FILESYSTEMS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+CONFIG_BINARY_PRINTF=y
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+CONFIG_GENERIC_FIND_LAST_BIT=y
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_T10DIF is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+CONFIG_HAVE_LMB=y
+CONFIG_NLATTR=y
+CONFIG_GENERIC_ATOMIC64=y
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_STRIP_ASM_SYMS is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
+CONFIG_DETECT_HUNG_TASK=y
+# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
+CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_SLUB_STATS is not set
+# CONFIG_DEBUG_KMEMLEAK is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_LOCK_ALLOC is not set
+# CONFIG_PROVE_LOCKING is not set
+# CONFIG_LOCK_STAT is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+CONFIG_STACKTRACE=y
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+# CONFIG_DEBUG_MEMORY_INIT is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_DEBUG_CREDENTIALS is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_LATENCYTOP is not set
+CONFIG_SYSCTL_SYSCALL_CHECK=y
+# CONFIG_DEBUG_PAGEALLOC is not set
+CONFIG_NOP_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_RING_BUFFER=y
+CONFIG_EVENT_TRACING=y
+CONFIG_CONTEXT_SWITCH_TRACER=y
+CONFIG_RING_BUFFER_ALLOW_SWAP=y
+CONFIG_TRACING=y
+CONFIG_TRACING_SUPPORT=y
+CONFIG_FTRACE=y
+# CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_ENABLE_DEFAULT_TRACERS is not set
+# CONFIG_BOOT_TRACER is not set
+CONFIG_BRANCH_PROFILE_NONE=y
+# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
+# CONFIG_PROFILE_ALL_BRANCHES is not set
+# CONFIG_STACK_TRACER is not set
+# CONFIG_KMEMTRACE is not set
+# CONFIG_WORKQUEUE_TRACER is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_RING_BUFFER_BENCHMARK is not set
+# CONFIG_DYNAMIC_DEBUG is not set
+# CONFIG_DMA_API_DEBUG is not set
+# CONFIG_SAMPLES is not set
+CONFIG_HAVE_ARCH_KGDB=y
+# CONFIG_KGDB is not set
+# CONFIG_PPC_DISABLE_WERROR is not set
+CONFIG_PPC_WERROR=y
+CONFIG_PRINT_STACK_DEPTH=64
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_PPC_EMULATED_STATS is not set
+# CONFIG_CODE_PATCHING_SELFTEST is not set
+# CONFIG_FTR_FIXUP_SELFTEST is not set
+# CONFIG_MSI_BITMAP_SELFTEST is not set
+# CONFIG_XMON is not set
+# CONFIG_IRQSTACKS is not set
+# CONFIG_VIRQ_DEBUG is not set
+# CONFIG_BDI_SWITCH is not set
+CONFIG_PPC_EARLY_DEBUG=y
+# CONFIG_PPC_EARLY_DEBUG_LPAR is not set
+# CONFIG_PPC_EARLY_DEBUG_G5 is not set
+# CONFIG_PPC_EARLY_DEBUG_RTAS_PANEL is not set
+# CONFIG_PPC_EARLY_DEBUG_RTAS_CONSOLE is not set
+# CONFIG_PPC_EARLY_DEBUG_MAPLE is not set
+# CONFIG_PPC_EARLY_DEBUG_ISERIES is not set
+# CONFIG_PPC_EARLY_DEBUG_PAS_REALMODE is not set
+# CONFIG_PPC_EARLY_DEBUG_BEAT is not set
+CONFIG_PPC_EARLY_DEBUG_44x=y
+# CONFIG_PPC_EARLY_DEBUG_40x is not set
+# CONFIG_PPC_EARLY_DEBUG_CPM is not set
+# CONFIG_PPC_EARLY_DEBUG_USBGECKO is not set
+CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW=0x40000200
+CONFIG_PPC_EARLY_DEBUG_44x_PHYSHIGH=0x1
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITYFS is not set
+# CONFIG_DEFAULT_SECURITY_SELINUX is not set
+# CONFIG_DEFAULT_SECURITY_SMACK is not set
+# CONFIG_DEFAULT_SECURITY_TOMOYO is not set
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEFAULT_SECURITY=""
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_ALGAPI2=y
+CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_BLKCIPHER2=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_PCOMP=y
+CONFIG_CRYPTO_MANAGER=y
+CONFIG_CRYPTO_MANAGER2=y
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+CONFIG_CRYPTO_WORKQUEUE=y
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+CONFIG_CRYPTO_ECB=y
+# CONFIG_CRYPTO_LRW is not set
+CONFIG_CRYPTO_PCBC=y
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+# CONFIG_CRYPTO_VMAC is not set
+
+#
+# Digest
+#
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_GHASH is not set
+# CONFIG_CRYPTO_MD4 is not set
+CONFIG_CRYPTO_MD5=y
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_RMD128 is not set
+# CONFIG_CRYPTO_RMD160 is not set
+# CONFIG_CRYPTO_RMD256 is not set
+# CONFIG_CRYPTO_RMD320 is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_ZLIB is not set
+# CONFIG_CRYPTO_LZO is not set
+
+#
+# Random Number Generation
+#
+# CONFIG_CRYPTO_ANSI_CPRNG is not set
+# CONFIG_CRYPTO_HW is not set
+# CONFIG_PPC_CLOCK is not set
+# CONFIG_VIRTUALIZATION is not set
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 08/13] powerpc/476: define specific cpu table entry DD1.1 core
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (5 preceding siblings ...)
2010-03-05 20:43 ` [PATCH 07/13] powerpc/47x: defconfig for 476 on the iss 4xx simulator Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 09/13] powerpc/476: Workaround for dcbf/dcbz workaround on DD1 Dave Kleikamp
` (5 subsequent siblings)
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/476: define specific cpu table entry DD1.1 core
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
There are still some unstable bits in the DD1.1 cores. Don't use
the FPU or the tlbivax operation. Define CPU_FTR_476_DD1_1 for additional
workarounds in later patches.
The DD1 core requires an additional workaround that will be addressed
in a separate patch, which may not need to be picked up into the
mainline kernel.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/cputable.h | 1 +
arch/powerpc/kernel/cputable.c | 26 ++++++++++++++++++++------
2 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 9fff628..7c5d490 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -153,6 +153,7 @@ extern const char *powerpc_base_platform;
#define CPU_FTR_NAP_DISABLE_L2_PR ASM_CONST(0x0000000000002000)
#define CPU_FTR_DUAL_PLL_750FX ASM_CONST(0x0000000000004000)
#define CPU_FTR_NO_DPM ASM_CONST(0x0000000000008000)
+#define CPU_FTR_476_DD1_1 ASM_CONST(0x0000000000010000)
#define CPU_FTR_NEED_COHERENT ASM_CONST(0x0000000000020000)
#define CPU_FTR_NO_BTIC ASM_CONST(0x0000000000040000)
#define CPU_FTR_NODSISRALIGN ASM_CONST(0x0000000000100000)
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index a06e6d3..cb9e6b7 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1701,15 +1701,15 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check = machine_check_440A,
.platform = "ppc440",
},
- { /* 476 core */
+ { /* 476 DD1.1 core */
.pvr_mask = 0xffff0000,
- .pvr_value = 0x11a50000,
+ .pvr_value = 0x11a52040,
.cpu_name = "476",
- .cpu_features = CPU_FTRS_47X,
- .cpu_user_features = COMMON_USER_BOOKE |
- PPC_FEATURE_HAS_FPU,
+ .cpu_features = CPU_FTRS_47X | CPU_FTR_476_DD1_1 |
+ CPU_FTR_FPU_UNAVAILABLE,
+ .cpu_user_features = COMMON_USER_BOOKE,
.mmu_features = MMU_FTR_TYPE_47x |
- MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL,
+ MMU_FTR_LOCK_BCAST_INVAL,
.icache_bsize = 32,
.dcache_bsize = 128,
.machine_check = machine_check_47x,
@@ -1724,6 +1724,20 @@ static struct cpu_spec __initdata cpu_specs[] = {
PPC_FEATURE_HAS_FPU,
.cpu_user_features = COMMON_USER_BOOKE,
.mmu_features = MMU_FTR_TYPE_47x |
+ MMU_FTR_LOCK_BCAST_INVAL,
+ .icache_bsize = 32,
+ .dcache_bsize = 128,
+ .machine_check = machine_check_47x,
+ .platform = "ppc470",
+ },
+ { /* 476 others */
+ .pvr_mask = 0xffff0000,
+ .pvr_value = 0x11a52000,
+ .cpu_name = "476",
+ .cpu_features = CPU_FTRS_47X,
+ .cpu_user_features = COMMON_USER_BOOKE |
+ PPC_FEATURE_HAS_FPU,
+ .mmu_features = MMU_FTR_TYPE_47x |
MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL,
.icache_bsize = 32,
.dcache_bsize = 128,
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 09/13] powerpc/476: Workaround for dcbf/dcbz workaround on DD1
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (6 preceding siblings ...)
2010-03-05 20:43 ` [PATCH 08/13] powerpc/476: define specific cpu table entry DD1.1 core Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 10/13] powerpc/476: Add isync to the top of all exception handlers for DD1.1 core Dave Kleikamp
` (4 subsequent siblings)
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/476: Workaround for dcbf/dcbz workaround on DD1
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
On the DD1.1 core, the dcbf and dcbz instructions need to be preceded and
followed by an lwsync. We must trap user-space to ensure that this occurs
there too.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/asm-compat.h | 10 +++++++
arch/powerpc/include/asm/ppc-opcode.h | 4 +++
arch/powerpc/include/asm/reg_booke.h | 9 +++++++
arch/powerpc/kernel/entry_32.S | 35 +++++++++++++++++++++++---
arch/powerpc/kernel/head_44x.S | 9 +++++++
arch/powerpc/kernel/misc_32.S | 32 ++++++++++++++++++++++-
arch/powerpc/kernel/traps.c | 45 +++++++++++++++++++++++++++++++++
arch/powerpc/lib/copy_32.S | 7 ++++-
8 files changed, 145 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h
index 8f0fe79..bee05ec 100644
--- a/arch/powerpc/include/asm/asm-compat.h
+++ b/arch/powerpc/include/asm/asm-compat.h
@@ -64,6 +64,16 @@
#define PPC405_ERR77(ra,rb)
#define PPC405_ERR77_SYNC
#endif
+
+#ifdef CONFIG_PPC_47x
+#define PPC476_ERR_DCBx() \
+ BEGIN_FTR_SECTION; \
+ lwsync; \
+ END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
+#else
+#define PPC476_ERR_DCBx()
+#endif /* CONFIG_PPC_47x */
+
#endif
#endif /* _ASM_POWERPC_ASM_COMPAT_H */
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index ef9aa84..629b1fe 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -19,6 +19,10 @@
#define PPC_INST_DCBA 0x7c0005ec
#define PPC_INST_DCBA_MASK 0xfc0007fe
#define PPC_INST_DCBAL 0x7c2005ec
+#define PPC_INST_DCBF 0x7c0000ac
+#define PPC_INST_DCBF_MASK 0xfc0007fe
+#define PPC_INST_DCBZ 0x7c0007ec
+#define PPC_INST_DCBZ_MASK 0xfc0007fe
#define PPC_INST_DCBZL 0x7c2007ec
#define PPC_INST_ISEL 0x7c00001e
#define PPC_INST_ISEL_MASK 0xfc00003e
diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h
index ee61a9d..8153093 100644
--- a/arch/powerpc/include/asm/reg_booke.h
+++ b/arch/powerpc/include/asm/reg_booke.h
@@ -276,6 +276,8 @@
#define ESR_IMCN 0x40000000 /* Instr. Machine Check - Non-config */
#define ESR_IMCB 0x20000000 /* Instr. Machine Check - Bus error */
#define ESR_IMCT 0x10000000 /* Instr. Machine Check - Timeout */
+#define ESR_POT1 0x20000000 /* 476 - IOCR1 trap */
+#define ESR_POT2 0x10000000 /* 476 - IOCR2 trap */
#define ESR_PIL 0x08000000 /* Program Exception - Illegal */
#define ESR_PPR 0x04000000 /* Program Exception - Privileged */
#define ESR_PTR 0x02000000 /* Program Exception - Trap */
@@ -535,6 +537,13 @@
#define MMUBE1_VBE3 0x00000004
#define MMUBE1_VBE4 0x00000002
#define MMUBE1_VBE5 0x00000001
+#define SPRN_IOCCR 860
+#define IOCCR_IOCR1EN 0x80000000
+#define IOCCR_IOCR1M 0x40000000
+#define IOCCR_IOCR2EN 0x20000000
+#define IOCCR_IOCR2M 0x10000000
+#define SPRN_IOCR1 861
+#define SPRN_IOCR2 862
#endif /* __ASM_POWERPC_REG_BOOKE_H__ */
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index ed4aeb9..57b7893 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -142,6 +142,12 @@ transfer_to_handler:
addi r2,r12,-THREAD
tovirt(r2,r2) /* set r2 to current */
beq 2f /* if from user, fix up THREAD.regs */
+#ifdef CONFIG_PPC_47x
+BEGIN_FTR_SECTION
+ li r11,0
+ mtspr SPRN_IOCCR,r11
+END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
+#endif /* CONFIG_PPC_47x */
addi r11,r1,STACK_FRAME_OVERHEAD
stw r11,PT_REGS(r12)
#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
@@ -280,6 +286,12 @@ stack_ovf:
0:
_GLOBAL(DoSyscall)
+#ifdef CONFIG_PPC_47x
+BEGIN_FTR_SECTION
+ li r11,0
+ mtspr SPRN_IOCCR,r11
+END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
+#endif /* CONFIG_PPC_47x */
stw r3,ORIG_GPR3(r1)
li r12,0
stw r12,RESULT(r1)
@@ -381,6 +393,16 @@ BEGIN_MMU_FTR_SECTION
1:
END_MMU_FTR_SECTION_IFCLR(MMU_FTR_TYPE_47x)
#endif /* CONFIG_44x */
+#ifdef CONFIG_PPC_47x
+BEGIN_FTR_SECTION
+ lwz r7,_MSR(r1)
+ andi. r5,r7,MSR_PR
+ beq 11f
+ lis r4,(IOCCR_IOCR1EN|IOCCR_IOCR2EN)@h
+ mtspr SPRN_IOCCR,r4
+11:
+END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
+#endif /* CONFIG_PPC_47x */
BEGIN_FTR_SECTION
lwarx r7,0,r1
END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX)
@@ -716,9 +738,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_SPE)
fast_exception_return:
#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
andi. r10,r9,MSR_RI /* check for recoverable interrupt */
- beq 1f /* if not, we've got problems */
+ beq try_recov_exception /* if not, we've got problems */
#endif
-
2: REST_4GPRS(3, r11)
lwz r10,_CCR(r11)
REST_GPR(1, r11)
@@ -736,7 +757,8 @@ fast_exception_return:
#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
/* check if the exception happened in a restartable section */
-1: lis r3,exc_exit_restart_end@ha
+try_recov_exception:
+ lis r3,exc_exit_restart_end@ha
addi r3,r3,exc_exit_restart_end@l
cmplw r12,r3
bge 3f
@@ -809,6 +831,13 @@ restore_user:
andis. r10,r0,DBCR0_IDM@h
bnel- load_dbcr0
#endif
+#ifdef CONFIG_PPC_47x
+BEGIN_FTR_SECTION
+ lis r0,(IOCCR_IOCR1EN|IOCCR_IOCR2EN)@h
+ mtspr SPRN_IOCCR,r0
+1:
+END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
+#endif /* CONFIG_PPC_47x */
#ifdef CONFIG_PREEMPT
b restore
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index af3a9e1..a96796d 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -1113,6 +1113,15 @@ clear_utlb_entry:
mtspr SPRN_CCR0,r3
isync
+ /* XXX DD1.1 workaround, trap on dcbz & dcbf. We pre-configure
+ * IOCR1 and 2 but we don't enable them in IOCCR, this will
+ * be done on kernel entry/exit
+ */
+ LOAD_REG_IMMEDIATE(r3, (31 << 26) | ( 86 << 1)) /* dcbf */
+ LOAD_REG_IMMEDIATE(r4, (31 << 26) | (1014 << 1)) /* dcbz */
+ mtspr SPRN_IOCR1, r3
+ mtspr SPRN_IOCR2, r4
+
#endif /* CONFIG_PPC_47x */
/*
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 8043d1b..db6b115 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -393,7 +393,9 @@ _GLOBAL(flush_dcache_range)
beqlr
mtctr r4
-1: dcbf 0,r3
+1: PPC476_ERR_DCBx()
+ dcbf 0,r3
+ PPC476_ERR_DCBx()
addi r3,r3,L1_CACHE_BYTES
bdnz 1b
sync /* wait for dcbst's to get to ram */
@@ -507,7 +509,9 @@ _GLOBAL(clear_pages)
li r0,PAGE_SIZE/L1_CACHE_BYTES
slw r0,r0,r4
mtctr r0
-1: dcbz 0,r3
+1: PPC476_ERR_DCBx()
+ dcbz 0,r3
+ PPC476_ERR_DCBx()
addi r3,r3,L1_CACHE_BYTES
bdnz 1b
blr
@@ -551,7 +555,9 @@ _GLOBAL(copy_page)
mtctr r0
1:
dcbt r11,r4
+ PPC476_ERR_DCBx()
dcbz r5,r3
+ PPC476_ERR_DCBx()
COPY_16_BYTES
#if L1_CACHE_BYTES >= 32
COPY_16_BYTES
@@ -807,3 +813,25 @@ relocate_new_kernel_end:
relocate_new_kernel_size:
.long relocate_new_kernel_end - relocate_new_kernel
#endif
+
+#ifdef CONFIG_PPC_47x
+_GLOBAL(__dcbf)
+ lwsync
+1: dcbf 0,r3
+ lwsync
+ li r3,0
+ blr
+_GLOBAL(__dcbz)
+ lwsync
+2: dcbz 0,r3
+ lwsync
+ li r3,0
+ blr
+3: li r3,-EFAULT
+ blr
+ .section __ex_table,"a"
+ .align 2
+ .long 1b,3b
+ .long 2b,3b
+ .text
+#endif /* CONFIG_PPC_47x */
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 9957c44..2f89c7f 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -772,6 +772,31 @@ static int emulate_isel(struct pt_regs *regs, u32 instword)
return 0;
}
+#ifdef CONFIG_PPC_47x
+
+extern int __dcbf(unsigned long ea);
+extern int __dcbz(unsigned long ea);
+
+static int emulate_dcbf(struct pt_regs *regs, u32 instword)
+{
+ u8 rA = (instword >> 16) & 0x1f;
+ u8 rB = (instword >> 11) & 0x1f;
+ unsigned long ea = regs->gpr[rB] + ((rA == 0) ? 0 : regs->gpr[rA]);
+
+ return __dcbf(ea);
+}
+
+static int emulate_dcbz(struct pt_regs *regs, u32 instword)
+{
+ u8 rA = (instword >> 16) & 0x1f;
+ u8 rB = (instword >> 11) & 0x1f;
+ unsigned long ea = regs->gpr[rB] + ((rA == 0) ? 0 : regs->gpr[rA]);
+
+ return __dcbz(ea);
+}
+
+#endif /* CONFIG_PPC_47x */
+
static int emulate_instruction(struct pt_regs *regs)
{
u32 instword;
@@ -827,6 +852,18 @@ static int emulate_instruction(struct pt_regs *regs)
return emulate_isel(regs, instword);
}
+#ifdef CONFIG_PPC_47x
+ /* Emulate dcbf instruction */
+ if ((instword & PPC_INST_DCBF_MASK) == PPC_INST_DCBF) {
+ return emulate_dcbf(regs, instword);
+ }
+
+ /* Emulate dcbz instruction */
+ if ((instword & PPC_INST_DCBZ_MASK) == PPC_INST_DCBZ) {
+ return emulate_dcbz(regs, instword);
+ }
+#endif /* CONFIG_47x */
+
return -EINVAL;
}
@@ -842,6 +879,14 @@ void __kprobes program_check_exception(struct pt_regs *regs)
/* We can now get here via a FP Unavailable exception if the core
* has no FPU, in that case the reason flags will be 0 */
+#ifdef CONFIG_PPC_47x
+ /* Make IOC instruction traps look like illegal instructions
+ * so we hit the proper emulation code path
+ */
+ if (mmu_has_feature(MMU_FTR_TYPE_47x) &&
+ (reason & (ESR_POT1 | ESR_POT2)))
+ reason |= ESR_PIL;
+#endif /* CONFIG_PPC_47x */
if (reason & REASON_FP) {
/* IEEE FP exception */
diff --git a/arch/powerpc/lib/copy_32.S b/arch/powerpc/lib/copy_32.S
index 74a7f41..d649609 100644
--- a/arch/powerpc/lib/copy_32.S
+++ b/arch/powerpc/lib/copy_32.S
@@ -12,6 +12,7 @@
#include <asm/cache.h>
#include <asm/errno.h>
#include <asm/ppc_asm.h>
+#include <asm/cputable.h>
#define COPY_16_BYTES \
lwz r7,4(r4); \
@@ -98,7 +99,9 @@ _GLOBAL(cacheable_memzero)
bdnz 4b
3: mtctr r9
li r7,4
-10: dcbz r7,r6
+10: PPC476_ERR_DCBx()
+ dcbz r7,r6
+ PPC476_ERR_DCBx()
addi r6,r6,CACHELINE_BYTES
bdnz 10b
clrlwi r5,r8,32-LG_CACHELINE_BYTES
@@ -368,7 +371,9 @@ _GLOBAL(__copy_tofrom_user)
mtctr r8
53: dcbt r3,r4
+ PPC476_ERR_DCBx()
54: dcbz r11,r6
+ PPC476_ERR_DCBx()
.section __ex_table,"a"
.align 2
.long 54b,105f
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 10/13] powerpc/476: Add isync to the top of all exception handlers for DD1.1 core
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (7 preceding siblings ...)
2010-03-05 20:43 ` [PATCH 09/13] powerpc/476: Workaround for dcbf/dcbz workaround on DD1 Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 11/13] powerpc/476: Software workaround to fix dcr read/write sequencing Dave Kleikamp
` (3 subsequent siblings)
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/476: Add isync to the top of all exception handlers for DD1.1 core
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/asm-compat.h | 7 ++++++-
arch/powerpc/kernel/head_booke.h | 3 ++-
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h
index bee05ec..1890fbf 100644
--- a/arch/powerpc/include/asm/asm-compat.h
+++ b/arch/powerpc/include/asm/asm-compat.h
@@ -70,8 +70,13 @@
BEGIN_FTR_SECTION; \
lwsync; \
END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
-#else
+#define PPC476_ERR_ISYNC() \
+ BEGIN_FTR_SECTION; \
+ isync; \
+ END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
+#else /* ! CONFIG_PPC_47x */
#define PPC476_ERR_DCBx()
+#define PPC476_ERR_ISYNC()
#endif /* CONFIG_PPC_47x */
#endif
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
index a0bf158..c6f5dcd 100644
--- a/arch/powerpc/kernel/head_booke.h
+++ b/arch/powerpc/kernel/head_booke.h
@@ -164,7 +164,8 @@
*/
#define START_EXCEPTION(label) \
.align 5; \
-label:
+label: \
+ PPC476_ERR_ISYNC()
#define FINISH_EXCEPTION(func) \
bl transfer_to_handler_full; \
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 11/13] powerpc/476: Software workaround to fix dcr read/write sequencing.
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (8 preceding siblings ...)
2010-03-05 20:43 ` [PATCH 10/13] powerpc/476: Add isync to the top of all exception handlers for DD1.1 core Dave Kleikamp
@ 2010-03-05 20:43 ` Dave Kleikamp
2010-03-05 20:44 ` [PATCH 12/13] powerpc/476: Workaround for DD1.1: Issue lwsync after mtpid Dave Kleikamp
` (2 subsequent siblings)
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:43 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/476: Software workaround to fix dcr read/write sequencing.
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Copy the register containing the dcr address to a spr before mfdcrx or
mtdcrx instruction. SPRN_SPRG_WSCRATCH_CRIT seems safe enough to use
as a dummy register, as it is only otherwise used by critical interrupts,
and we don't care if what we write is overwritten.
Ideally, would only do this when CPU_FTR_476_DD1_1 is set, but I'm not
getting the feature macros working in inlined assembler. The dummy store
is pretty cheap though, so I'm doing it unconditionally for 47x.
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/dcr-native.h | 24 ++++++++++++++++++++++--
1 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/dcr-native.h b/arch/powerpc/include/asm/dcr-native.h
index 7d2e623..768ce50 100644
--- a/arch/powerpc/include/asm/dcr-native.h
+++ b/arch/powerpc/include/asm/dcr-native.h
@@ -50,14 +50,34 @@ extern unsigned int __mfdcr(unsigned int reg);
static inline unsigned int mfdcrx(unsigned int reg)
{
unsigned int ret;
- asm volatile(".long 0x7c000206 | (%0 << 21) | (%1 << 16)"
+ asm volatile(
+#ifdef CONFIG_PPC_47x
+ /*
+ * Workaround: move reg to an spr prior to mfdcrx instruction
+ */
+ /* __stringify(BEGIN_FTR_SECTION) */
+ "mtspr "__stringify(SPRN_SPRG_WSCRATCH_CRIT)",%1;"
+ /* __stringify(END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)) */
+#endif
+ ".long 0x7c000206 | (%0 << 21) | (%1 << 16)"
: "=r" (ret) : "r" (reg));
return ret;
}
static inline void mtdcrx(unsigned int reg, unsigned int val)
{
- asm volatile(".long 0x7c000306 | (%0 << 21) | (%1 << 16)"
+ asm volatile(
+#ifdef CONFIG_PPC_47x
+ /*
+ * Workaround: move reg to an spr prior to mtdcrx instruction.
+ * (Would love to get the FTR_SECTION macros working for
+ * inlined assembler -- shaggy)
+ */
+ /* __stringify(BEGIN_FTR_SECTION) */
+ "mtspr "__stringify(SPRN_SPRG_WSCRATCH_CRIT)",%1;"
+ /* __stringify(END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)) */
+#endif
+ ".long 0x7c000306 | (%0 << 21) | (%1 << 16)"
: : "r" (val), "r" (reg));
}
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 12/13] powerpc/476: Workaround for DD1.1: Issue lwsync after mtpid
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (9 preceding siblings ...)
2010-03-05 20:43 ` [PATCH 11/13] powerpc/476: Software workaround to fix dcr read/write sequencing Dave Kleikamp
@ 2010-03-05 20:44 ` Dave Kleikamp
2010-03-05 20:44 ` [PATCH 13/13] powerpc/476: Add dci instruction to async interrupt handlers on DD1 core Dave Kleikamp
2010-03-05 20:45 ` [PATCH 06/13] powerpc/4xx: Simple platform for the ISS 4xx simulator Dave Kleikamp
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:44 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/476: Workaround for DD1.1: Issue lwsync after mtpid
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/asm-compat.h | 2 ++
arch/powerpc/kernel/head_44x.S | 1 +
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h
index 1890fbf..fd16e3a 100644
--- a/arch/powerpc/include/asm/asm-compat.h
+++ b/arch/powerpc/include/asm/asm-compat.h
@@ -70,12 +70,14 @@
BEGIN_FTR_SECTION; \
lwsync; \
END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
+#define PPC476_ERR_MTPID PPC476_ERR_DCBx
#define PPC476_ERR_ISYNC() \
BEGIN_FTR_SECTION; \
isync; \
END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
#else /* ! CONFIG_PPC_47x */
#define PPC476_ERR_DCBx()
+#define PPC476_ERR_MTPID()
#define PPC476_ERR_ISYNC()
#endif /* CONFIG_PPC_47x */
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index a96796d..c27b0cd 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -705,6 +705,7 @@ _GLOBAL(set_context)
stw r4, 0x4(r5)
#endif
mtspr SPRN_PID,r3
+ PPC476_ERR_MTPID()
isync /* Force context change */
blr
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 13/13] powerpc/476: Add dci instruction to async interrupt handlers on DD1 core
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (10 preceding siblings ...)
2010-03-05 20:44 ` [PATCH 12/13] powerpc/476: Workaround for DD1.1: Issue lwsync after mtpid Dave Kleikamp
@ 2010-03-05 20:44 ` Dave Kleikamp
2010-03-05 20:45 ` [PATCH 06/13] powerpc/4xx: Simple platform for the ISS 4xx simulator Dave Kleikamp
12 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:44 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/476: Add dci instruction to async interrupt handlers on DD1 core
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/asm-compat.h | 5 +++++
arch/powerpc/include/asm/cputable.h | 1 +
arch/powerpc/kernel/cputable.c | 14 ++++++++++++++
arch/powerpc/kernel/head_booke.h | 3 +++
4 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h
index fd16e3a..43e9d1b 100644
--- a/arch/powerpc/include/asm/asm-compat.h
+++ b/arch/powerpc/include/asm/asm-compat.h
@@ -71,6 +71,10 @@
lwsync; \
END_FTR_SECTION_IFSET(CPU_FTR_476_DD1_1)
#define PPC476_ERR_MTPID PPC476_ERR_DCBx
+#define PPC476_ERR_DCI() \
+ BEGIN_FTR_SECTION; \
+ dci; \
+ END_FTR_SECTION_IFSET(CPU_FTR_476_DD1)
#define PPC476_ERR_ISYNC() \
BEGIN_FTR_SECTION; \
isync; \
@@ -78,6 +82,7 @@
#else /* ! CONFIG_PPC_47x */
#define PPC476_ERR_DCBx()
#define PPC476_ERR_MTPID()
+#define PPC476_ERR_DCI()
#define PPC476_ERR_ISYNC()
#endif /* CONFIG_PPC_47x */
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 7c5d490..1cf38fb 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -156,6 +156,7 @@ extern const char *powerpc_base_platform;
#define CPU_FTR_476_DD1_1 ASM_CONST(0x0000000000010000)
#define CPU_FTR_NEED_COHERENT ASM_CONST(0x0000000000020000)
#define CPU_FTR_NO_BTIC ASM_CONST(0x0000000000040000)
+#define CPU_FTR_476_DD1 ASM_CONST(0x0000000000080000)
#define CPU_FTR_NODSISRALIGN ASM_CONST(0x0000000000100000)
#define CPU_FTR_PPC_LE ASM_CONST(0x0000000000200000)
#define CPU_FTR_REAL_LE ASM_CONST(0x0000000000400000)
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index cb9e6b7..e91bb2e 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1701,6 +1701,20 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check = machine_check_440A,
.platform = "ppc440",
},
+ { /* 476 DD1 core - needs DD1.1 feature as well */
+ .pvr_mask = 0xffff0000,
+ .pvr_value = 0x11a50000,
+ .cpu_name = "476",
+ .cpu_features = CPU_FTRS_47X | CPU_FTR_476_DD1 |
+ CPU_FTR_476_DD1_1 | CPU_FTR_FPU_UNAVAILABLE,
+ .cpu_user_features = COMMON_USER_BOOKE,
+ .mmu_features = MMU_FTR_TYPE_47x |
+ MMU_FTR_LOCK_BCAST_INVAL,
+ .icache_bsize = 32,
+ .dcache_bsize = 128,
+ .machine_check = machine_check_47x,
+ .platform = "ppc470",
+ },
{ /* 476 DD1.1 core */
.pvr_mask = 0xffff0000,
.pvr_value = 0x11a52040,
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
index c6f5dcd..c8e38c8 100644
--- a/arch/powerpc/kernel/head_booke.h
+++ b/arch/powerpc/kernel/head_booke.h
@@ -174,12 +174,14 @@ label: \
#define EXCEPTION(n, label, hdlr, xfer) \
START_EXCEPTION(label); \
+ PPC476_ERR_DCI(); \
NORMAL_EXCEPTION_PROLOG; \
addi r3,r1,STACK_FRAME_OVERHEAD; \
xfer(n, hdlr)
#define CRITICAL_EXCEPTION(n, label, hdlr) \
START_EXCEPTION(label); \
+ PPC476_ERR_DCI(); \
CRITICAL_EXCEPTION_PROLOG; \
addi r3,r1,STACK_FRAME_OVERHEAD; \
EXC_XFER_TEMPLATE(hdlr, n+2, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), \
@@ -379,6 +381,7 @@ label: \
#define DECREMENTER_EXCEPTION \
START_EXCEPTION(Decrementer) \
+ PPC476_ERR_DCI(); \
NORMAL_EXCEPTION_PROLOG; \
lis r0,TSR_DIS@h; /* Setup the DEC interrupt mask */ \
mtspr SPRN_TSR,r0; /* Clear the DEC interrupt */ \
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH 06/13] powerpc/4xx: Simple platform for the ISS 4xx simulator
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
` (11 preceding siblings ...)
2010-03-05 20:44 ` [PATCH 13/13] powerpc/476: Add dci instruction to async interrupt handlers on DD1 core Dave Kleikamp
@ 2010-03-05 20:45 ` Dave Kleikamp
2010-05-05 15:11 ` Josh Boyer
12 siblings, 1 reply; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-05 20:45 UTC (permalink / raw)
To: linuxppc-dev list; +Cc: Torez Smith
powerpc/4xx: Simple platform for the ISS 4xx simulator
From: Torez Smith <lnxtorez@linux.vnet.ibm.com>
This is a trivial 4xx plaform that uses the new simple bsp from
Josh and is handy to use in simulators such as ISS or even Mambo
who don't properly implement most of the actual devices in the
SoC but really only the core.
Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
---
arch/powerpc/boot/Makefile | 5 +
arch/powerpc/boot/dts/iss4xx-mpic.dts | 155 +++++++++++++++++++++++++++++++
arch/powerpc/boot/dts/iss4xx.dts | 116 +++++++++++++++++++++++
arch/powerpc/boot/treeboot-iss4xx.c | 56 +++++++++++
arch/powerpc/boot/wrapper | 3 +
arch/powerpc/include/asm/reg.h | 3 +
arch/powerpc/kernel/cputable.c | 15 +++
arch/powerpc/kernel/head_44x.S | 2
arch/powerpc/platforms/44x/Kconfig | 11 ++
arch/powerpc/platforms/44x/Makefile | 1
arch/powerpc/platforms/44x/iss4xx.c | 165 +++++++++++++++++++++++++++++++++
11 files changed, 531 insertions(+), 1 deletions(-)
create mode 100644 arch/powerpc/boot/dts/iss4xx-mpic.dts
create mode 100644 arch/powerpc/boot/dts/iss4xx.dts
create mode 100644 arch/powerpc/boot/treeboot-iss4xx.c
create mode 100644 arch/powerpc/platforms/44x/iss4xx.c
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index bb2465b..997196e 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -44,6 +44,7 @@ $(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=405
$(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=405
$(obj)/cuboot-acadia.o: BOOTCFLAGS += -mcpu=405
$(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
+$(obj)/treeboot-iss4xx.o: BOOTCFLAGS += -mcpu=405
$(obj)/virtex405-head.o: BOOTAFLAGS += -mcpu=405
@@ -77,7 +78,7 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c
cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c \
- gamecube-head.S gamecube.c wii-head.S wii.c
+ gamecube-head.S gamecube.c wii-head.S wii.c treeboot-iss4xx.c
src-boot := $(src-wlib) $(src-plat) empty.c
src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -206,6 +207,8 @@ image-$(CONFIG_TAISHAN) += cuImage.taishan
image-$(CONFIG_KATMAI) += cuImage.katmai
image-$(CONFIG_WARP) += cuImage.warp
image-$(CONFIG_YOSEMITE) += cuImage.yosemite
+image-$(CONFIG_ISS4xx) += treeImage.iss4xx \
+ treeImage.iss4xx-mpic
# Board ports in arch/powerpc/platform/8xx/Kconfig
image-$(CONFIG_MPC86XADS) += cuImage.mpc866ads
diff --git a/arch/powerpc/boot/dts/iss4xx-mpic.dts b/arch/powerpc/boot/dts/iss4xx-mpic.dts
new file mode 100644
index 0000000..23e9d9b
--- /dev/null
+++ b/arch/powerpc/boot/dts/iss4xx-mpic.dts
@@ -0,0 +1,155 @@
+/*
+ * Device Tree Source for IBM Embedded PPC 476 Platform
+ *
+ * Copyright 2010 Torez Smith, IBM Corporation.
+ *
+ * Based on earlier code:
+ * Copyright (c) 2006, 2007 IBM Corp.
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/dts-v1/;
+
+/memreserve/ 0x01f00000 0x00100000;
+
+/ {
+ #address-cells = <2>;
+ #size-cells = <1>;
+ model = "ibm,iss-4xx";
+ compatible = "ibm,iss-4xx";
+ dcr-parent = <&{/cpus/cpu@0}>;
+
+ aliases {
+ serial0 = &UART0;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ model = "PowerPC,4xx"; // real CPU changed in sim
+ reg = <0>;
+ clock-frequency = <100000000>; // 100Mhz :-)
+ timebase-frequency = <100000000>;
+ i-cache-line-size = <32>;
+ d-cache-line-size = <32>;
+ i-cache-size = <32768>;
+ d-cache-size = <32768>;
+ dcr-controller;
+ dcr-access-method = "native";
+ status = "ok";
+ };
+ cpu@1 {
+ device_type = "cpu";
+ model = "PowerPC,4xx"; // real CPU changed in sim
+ reg = <1>;
+ clock-frequency = <100000000>; // 100Mhz :-)
+ timebase-frequency = <100000000>;
+ i-cache-line-size = <32>;
+ d-cache-line-size = <32>;
+ i-cache-size = <32768>;
+ d-cache-size = <32768>;
+ dcr-controller;
+ dcr-access-method = "native";
+ status = "disabled";
+ enable-method = "spin-table";
+ cpu-release-addr = <0 0x01f00100>;
+ };
+ cpu@2 {
+ device_type = "cpu";
+ model = "PowerPC,4xx"; // real CPU changed in sim
+ reg = <2>;
+ clock-frequency = <100000000>; // 100Mhz :-)
+ timebase-frequency = <100000000>;
+ i-cache-line-size = <32>;
+ d-cache-line-size = <32>;
+ i-cache-size = <32768>;
+ d-cache-size = <32768>;
+ dcr-controller;
+ dcr-access-method = "native";
+ status = "disabled";
+ enable-method = "spin-table";
+ cpu-release-addr = <0 0x01f00200>;
+ };
+ cpu@3 {
+ device_type = "cpu";
+ model = "PowerPC,4xx"; // real CPU changed in sim
+ reg = <3>;
+ clock-frequency = <100000000>; // 100Mhz :-)
+ timebase-frequency = <100000000>;
+ i-cache-line-size = <32>;
+ d-cache-line-size = <32>;
+ i-cache-size = <32768>;
+ d-cache-size = <32768>;
+ dcr-controller;
+ dcr-access-method = "native";
+ status = "disabled";
+ enable-method = "spin-table";
+ cpu-release-addr = <0 0x01f00300>;
+ };
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x00000000 0x00000000 0x00000000>; // Filled in by zImage
+
+ };
+
+ MPIC: interrupt-controller {
+ compatible = "chrp,open-pic";
+ interrupt-controller;
+ dcr-reg = <0xffc00000 0x00030000>;
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #interrupt-cells = <2>;
+
+ };
+
+ plb {
+ compatible = "ibm,plb-4xx", "ibm,plb4"; /* Could be PLB6, doesn't matter */
+ #address-cells = <2>;
+ #size-cells = <1>;
+ ranges;
+ clock-frequency = <0>; // Filled in by zImage
+
+ POB0: opb {
+ compatible = "ibm,opb-4xx", "ibm,opb";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ /* Wish there was a nicer way of specifying a full 32-bit
+ range */
+ ranges = <0x00000000 0x00000001 0x00000000 0x80000000
+ 0x80000000 0x00000001 0x80000000 0x80000000>;
+ clock-frequency = <0>; // Filled in by zImage
+ UART0: serial@40000200 {
+ device_type = "serial";
+ compatible = "ns16550a";
+ reg = <0x40000200 0x00000008>;
+ virtual-reg = <0xe0000200>;
+ clock-frequency = <11059200>;
+ current-speed = <115200>;
+ interrupt-parent = <&MPIC>;
+ interrupts = <0x0 0x2>;
+ };
+ };
+ };
+
+ nvrtc {
+ compatible = "ds1743-nvram", "ds1743", "rtc-ds1743";
+ reg = <0 0xEF703000 0x2000>;
+ };
+ iss-block {
+ compatible = "ibm,iss-sim-block-device";
+ reg = <0 0xEF701000 0x1000>;
+ };
+
+ chosen {
+ linux,stdout-path = "/plb/opb/serial@40000200";
+ };
+};
diff --git a/arch/powerpc/boot/dts/iss4xx.dts b/arch/powerpc/boot/dts/iss4xx.dts
new file mode 100644
index 0000000..4ff6555
--- /dev/null
+++ b/arch/powerpc/boot/dts/iss4xx.dts
@@ -0,0 +1,116 @@
+/*
+ * Device Tree Source for IBM Embedded PPC 476 Platform
+ *
+ * Copyright 2010 Torez Smith, IBM Corporation.
+ *
+ * Based on earlier code:
+ * Copyright (c) 2006, 2007 IBM Corp.
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/dts-v1/;
+
+/ {
+ #address-cells = <2>;
+ #size-cells = <1>;
+ model = "ibm,iss-4xx";
+ compatible = "ibm,iss-4xx";
+ dcr-parent = <&{/cpus/cpu@0}>;
+
+ aliases {
+ serial0 = &UART0;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ model = "PowerPC,4xx"; // real CPU changed in sim
+ reg = <0x00000000>;
+ clock-frequency = <100000000>; // 100Mhz :-)
+ timebase-frequency = <100000000>;
+ i-cache-line-size = <32>; // may need fixup in sim
+ d-cache-line-size = <32>; // may need fixup in sim
+ i-cache-size = <32768>; /* may need fixup in sim */
+ d-cache-size = <32768>; /* may need fixup in sim */
+ dcr-controller;
+ dcr-access-method = "native";
+ };
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x00000000 0x00000000 0x00000000>; // Filled in by zImage
+ };
+
+ UIC0: interrupt-controller0 {
+ compatible = "ibm,uic-4xx", "ibm,uic";
+ interrupt-controller;
+ cell-index = <0>;
+ dcr-reg = <0x0c0 0x009>;
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #interrupt-cells = <2>;
+
+ };
+
+ UIC1: interrupt-controller1 {
+ compatible = "ibm,uic-4xx", "ibm,uic";
+ interrupt-controller;
+ cell-index = <1>;
+ dcr-reg = <0x0d0 0x009>;
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #interrupt-cells = <2>;
+ interrupts = <0x1e 0x4 0x1f 0x4>; /* cascade */
+ interrupt-parent = <&UIC0>;
+ };
+
+ plb {
+ compatible = "ibm,plb-4xx", "ibm,plb4"; /* Could be PLB6, doesn't matter */
+ #address-cells = <2>;
+ #size-cells = <1>;
+ ranges;
+ clock-frequency = <0>; // Filled in by zImage
+
+ POB0: opb {
+ compatible = "ibm,opb-4xx", "ibm,opb";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ /* Wish there was a nicer way of specifying a full 32-bit
+ range */
+ ranges = <0x00000000 0x00000001 0x00000000 0x80000000
+ 0x80000000 0x00000001 0x80000000 0x80000000>;
+ clock-frequency = <0>; // Filled in by zImage
+ UART0: serial@40000200 {
+ device_type = "serial";
+ compatible = "ns16550a";
+ reg = <0x40000200 0x00000008>;
+ virtual-reg = <0xe0000200>;
+ clock-frequency = <11059200>;
+ current-speed = <115200>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x0 0x4>;
+ };
+ };
+ };
+
+ nvrtc {
+ compatible = "ds1743-nvram", "ds1743", "rtc-ds1743";
+ reg = <0 0xEF703000 0x2000>;
+ };
+ iss-block {
+ compatible = "ibm,iss-sim-block-device";
+ reg = <0 0xEF701000 0x1000>;
+ };
+
+ chosen {
+ linux,stdout-path = "/plb/opb/serial@40000200";
+ };
+};
diff --git a/arch/powerpc/boot/treeboot-iss4xx.c b/arch/powerpc/boot/treeboot-iss4xx.c
new file mode 100644
index 0000000..fcc4495
--- /dev/null
+++ b/arch/powerpc/boot/treeboot-iss4xx.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2010 Ben. Herrenschmidt, IBM Corporation.
+ *
+ * Based on earlier code:
+ * Copyright (C) Paul Mackerras 1997.
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003, 2004 Zultys Technologies
+ *
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "string.h"
+#include "stdio.h"
+#include "page.h"
+#include "ops.h"
+#include "reg.h"
+#include "io.h"
+#include "dcr.h"
+#include "4xx.h"
+#include "44x.h"
+#include "libfdt.h"
+
+BSS_STACK(4096);
+
+static void iss_4xx_fixups(void)
+{
+ ibm4xx_sdram_fixup_memsize();
+}
+
+#define SPRN_PIR 0x11E /* Processor Indentification Register */
+void platform_init(void)
+{
+ unsigned long end_of_ram = 0x08000000;
+ unsigned long avail_ram = end_of_ram - (unsigned long)_end;
+ u32 pir_reg;
+
+ simple_alloc_init(_end, avail_ram, 128, 64);
+ platform_ops.fixups = iss_4xx_fixups;
+ platform_ops.exit = ibm44x_dbcr_reset;
+ pir_reg = mfspr(SPRN_PIR);
+ fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
+ fdt_init(_dtb_start);
+ serial_console_init();
+}
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index f4594ed..d3216a3 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -237,6 +237,9 @@ gamecube|wii)
link_address='0x600000'
platformo="$object/$platform-head.o $object/$platform.o"
;;
+treeboot-iss4xx-mpic)
+ platformo="$object/treeboot-iss4xx.o"
+ ;;
esac
vmz="$tmpdir/`basename \"$kernel\"`.$ext"
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 4af1c28..bd1c3ab 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -850,6 +850,9 @@
#define PVR_8245 0x80811014
#define PVR_8260 PVR_8240
+/* 476 Simulator seems to currently have the PVR of the 602... */
+#define PVR_476_ISS 0x00052000
+
/* 64-bit processors */
/* XXX the prefix should be PVR_, we'll do a global sweep to fix it one day */
#define PV_NORTHSTAR 0x0033
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 7b2a67c..a06e6d3 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1715,6 +1715,21 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check = machine_check_47x,
.platform = "ppc470",
},
+ { /* 476 iss */
+ .pvr_mask = 0xffff0000,
+ .pvr_value = 0x00050000,
+ .cpu_name = "476",
+ .cpu_features = CPU_FTRS_47X,
+ .cpu_user_features = COMMON_USER_BOOKE |
+ PPC_FEATURE_HAS_FPU,
+ .cpu_user_features = COMMON_USER_BOOKE,
+ .mmu_features = MMU_FTR_TYPE_47x |
+ MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL,
+ .icache_bsize = 32,
+ .dcache_bsize = 128,
+ .machine_check = machine_check_47x,
+ .platform = "ppc470",
+ },
{ /* default match */
.pvr_mask = 0x00000000,
.pvr_value = 0x00000000,
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 992e9d5..af3a9e1 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -721,6 +721,8 @@ _GLOBAL(init_cpu_state)
srwi r3,r3,16
cmplwi cr0,r3,PVR_476@h
beq head_start_47x
+ cmplwi cr0,r3,PVR_476_ISS@h
+ beq head_start_47x
#endif /* CONFIG_PPC_47x */
/*
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 9365e53..eeba0a7 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -160,6 +160,17 @@ config YOSEMITE
help
This option enables support for the AMCC PPC440EP evaluation board.
+config ISS4xx
+ bool "ISS 4xx Simulator"
+ depends on (44x || 40x)
+ default n
+ select 405GP if 40x
+ select 440GP if 44x && !PPC_47x
+ select PPC_FPU
+ select OF_RTC
+ help
+ This option enables support for the IBM ISS simulation environment
+
#config LUAN
# bool "Luan"
# depends on 44x
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
index ee6185a..82ff326 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_SAM440EP) += sam440ep.o
obj-$(CONFIG_WARP) += warp.o
obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o
obj-$(CONFIG_XILINX_ML510) += virtex_ml510.o
+obj-$(CONFIG_ISS4xx) += iss4xx.o
diff --git a/arch/powerpc/platforms/44x/iss4xx.c b/arch/powerpc/platforms/44x/iss4xx.c
new file mode 100644
index 0000000..c9a13c6
--- /dev/null
+++ b/arch/powerpc/platforms/44x/iss4xx.c
@@ -0,0 +1,165 @@
+/*
+ * PPC476 board specific routines
+ *
+ * Copyright 2010 Torez Smith, IBM Corporation.
+ *
+ * Based on earlier code:
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+#include <asm/mpic.h>
+#include <asm/mmu.h>
+
+static __initdata struct of_device_id iss4xx_of_bus[] = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,plb6", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ {},
+};
+
+static int __init iss4xx_device_probe(void)
+{
+ of_platform_bus_probe(NULL, iss4xx_of_bus, NULL);
+ of_instantiate_rtc();
+
+ return 0;
+}
+machine_device_initcall(iss4xx, iss4xx_device_probe);
+
+/* We can have either UICs or MPICs */
+static void __init iss4xx_init_irq(void)
+{
+ struct device_node *np;
+
+ /* Find top level interrupt controller */
+ for_each_node_with_property(np, "interrupt-controller") {
+ if (of_get_property(np, "interrupts", NULL) == NULL)
+ break;
+ }
+ if (np == NULL)
+ panic("Can't find top level interrupt controller");
+
+ /* Check type and do appropriate initialization */
+ if (of_device_is_compatible(np, "ibm,uic")) {
+ uic_init_tree();
+ ppc_md.get_irq = uic_get_irq;
+ } else if (of_device_is_compatible(np, "chrp,open-pic")) {
+ /* The MPIC driver will get everything it needs from the
+ * device-tree, just pass 0 to all arguments
+ */
+ struct mpic *mpic = mpic_alloc(np, 0, MPIC_PRIMARY, 0, 0,
+ " MPIC ");
+ BUG_ON(mpic == NULL);
+ mpic_init(mpic);
+ ppc_md.get_irq = mpic_get_irq;
+ } else
+ panic("Unrecognized top level interrupt controller");
+}
+
+#ifdef CONFIG_SMP
+static void __cpuinit smp_iss4xx_setup_cpu(int cpu)
+{
+ mpic_setup_this_cpu();
+}
+
+static void __cpuinit smp_iss4xx_kick_cpu(int cpu)
+{
+ struct device_node *cpunode = of_get_cpu_node(cpu, NULL);
+ const u64 *spin_table_addr_prop;
+ u32 *spin_table;
+ extern void start_secondary_47x(void);
+
+ BUG_ON(cpunode == NULL);
+
+ /* Assume spin table. We could test for the enable-method in
+ * the device-tree but currently there's little point as it's
+ * our only supported method
+ */
+ spin_table_addr_prop = of_get_property(cpunode, "cpu-release-addr",
+ NULL);
+ if (spin_table_addr_prop == NULL) {
+ pr_err("CPU%d: Can't start, missing cpu-release-addr !\n", cpu);
+ return;
+ }
+
+ /* Assume it's mapped as part of the linear mapping. This is a bit
+ * fishy but will work fine for now
+ */
+ spin_table = (u32 *)__va(*spin_table_addr_prop);
+ pr_debug("CPU%d: Spin table mapped at %p\n", cpu, spin_table);
+
+ spin_table[3] = cpu;
+ smp_wmb();
+ spin_table[1] = __pa(start_secondary_47x);
+ mb();
+}
+
+static struct smp_ops_t iss_smp_ops = {
+ .probe = smp_mpic_probe,
+ .message_pass = smp_mpic_message_pass,
+ .setup_cpu = smp_iss4xx_setup_cpu,
+ .kick_cpu = smp_iss4xx_kick_cpu,
+ .give_timebase = smp_generic_give_timebase,
+ .take_timebase = smp_generic_take_timebase,
+};
+
+static void __init iss4xx_smp_init(void)
+{
+ if (mmu_has_feature(MMU_FTR_TYPE_47x))
+ smp_ops = &iss_smp_ops;
+}
+
+#else /* CONFIG_SMP */
+static void __init iss4xx_smp_init(void) { }
+#endif /* CONFIG_SMP */
+
+static void __init iss4xx_setup_arch(void)
+{
+ iss4xx_smp_init();
+}
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init iss4xx_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+
+ if (!of_flat_dt_is_compatible(root, "ibm,iss-4xx"))
+ return 0;
+
+ return 1;
+}
+
+define_machine(iss4xx) {
+ .name = "ISS-4xx",
+ .probe = iss4xx_probe,
+ .progress = udbg_progress,
+ .init_IRQ = iss4xx_init_irq,
+ .setup_arch = iss4xx_setup_arch,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply related [flat|nested] 21+ messages in thread
* Re: [PATCH 05/13] powerpc/476: Add isync after loading mmu and debug spr's
2010-03-05 20:43 ` [PATCH 05/13] powerpc/476: Add isync after loading mmu and debug spr's Dave Kleikamp
@ 2010-03-07 23:08 ` Hollis Blanchard
2010-03-10 21:09 ` Dave Kleikamp
0 siblings, 1 reply; 21+ messages in thread
From: Hollis Blanchard @ 2010-03-07 23:08 UTC (permalink / raw)
To: Dave Kleikamp; +Cc: linuxppc-dev list, Torez Smith
On Fri, Mar 5, 2010 at 12:43 PM, Dave Kleikamp
<shaggy@linux.vnet.ibm.com> wrote:
>
> powerpc/476: Add isync after loading mmu and debug spr's
>
> From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
>
> 476 requires an isync after loading MMU and debug related SPR's. =A0Some =
of
> these are in performance-critical paths and may need to be optimized, but
> initially, we're playing it safe.
Why is there sometimes #ifdef CONFIG_PPC_47x, sometimes not, and never
the cputable infrastructure which was intended for this sort of thing?
-Hollis
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 05/13] powerpc/476: Add isync after loading mmu and debug spr's
2010-03-07 23:08 ` Hollis Blanchard
@ 2010-03-10 21:09 ` Dave Kleikamp
0 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-03-10 21:09 UTC (permalink / raw)
To: Hollis Blanchard; +Cc: linuxppc-dev list, Torez Smith
On Sun, 2010-03-07 at 15:08 -0800, Hollis Blanchard wrote:
> On Fri, Mar 5, 2010 at 12:43 PM, Dave Kleikamp
> <shaggy@linux.vnet.ibm.com> wrote:
> >
> > powerpc/476: Add isync after loading mmu and debug spr's
> >
> > From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
> >
> > 476 requires an isync after loading MMU and debug related SPR's. Some of
> > these are in performance-critical paths and may need to be optimized, but
> > initially, we're playing it safe.
>
> Why is there sometimes #ifdef CONFIG_PPC_47x, sometimes not, and never
> the cputable infrastructure which was intended for this sort of thing?
The places without an ifdef are either in cpu initialization code, where
the cost of an isync is insignificant or, in one case, in 47x-specific
code.
I was having problems trying to get the cputable infrastructure
compiling in inline assembly in the *.c files, but I could have used
that in some places. Currently, one can't build with CONFIG_PPC_47x for
a non-47x cpu, and we want to re-evaluate whether we can get by without
these isyncs. So basically, I plan to clean this up somehow by the time
we have a working unified 44x/47x binary kernel.
Thanks,
Shaggy
--
David Kleikamp
IBM Linux Technology Center
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 04/13] powerpc/476: add machine check handler for 47x core
2010-03-05 13:43 ` [PATCH 04/13] powerpc/476: add machine check handler for 47x core Dave Kleikamp
@ 2010-05-05 12:27 ` Josh Boyer
2010-05-05 12:59 ` Josh Boyer
0 siblings, 1 reply; 21+ messages in thread
From: Josh Boyer @ 2010-05-05 12:27 UTC (permalink / raw)
To: Dave Kleikamp; +Cc: linuxppc-dev list, Torez Smith
On Fri, Mar 05, 2010 at 06:43:18AM -0700, Dave Kleikamp wrote:
>powerpc/476: add machine check handler for 47x core
>
>From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
>
>The 47x core's MCSR varies from 44x, so it needs it's own machine check
>handler.
>
>Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
>---
>
> arch/powerpc/include/asm/cputable.h | 1 +
> arch/powerpc/kernel/cputable.c | 1 +
> arch/powerpc/kernel/traps.c | 40 +++++++++++++++++++++++++++++++++++
> 3 files changed, 42 insertions(+), 0 deletions(-)
>
>
>diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
>index 75b774e..9fff628 100644
>--- a/arch/powerpc/include/asm/cputable.h
>+++ b/arch/powerpc/include/asm/cputable.h
>@@ -72,6 +72,7 @@ extern int machine_check_4xx(struct pt_regs *regs);
> extern int machine_check_440A(struct pt_regs *regs);
> extern int machine_check_e500(struct pt_regs *regs);
> extern int machine_check_e200(struct pt_regs *regs);
>+extern int machine_check_47x(struct pt_regs *regs);
>
> /* NOTE WELL: Update identify_cpu() if fields are added or removed! */
> struct cpu_spec {
>diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
>index 338ac47..7b2a67c 100644
>--- a/arch/powerpc/kernel/cputable.c
>+++ b/arch/powerpc/kernel/cputable.c
>@@ -1712,6 +1712,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
> MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL,
> .icache_bsize = 32,
> .dcache_bsize = 128,
>+ .machine_check = machine_check_47x,
> .platform = "ppc470",
> },
> { /* default match */
>diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
>index d069ff8..21ed77b 100644
>--- a/arch/powerpc/kernel/traps.c
>+++ b/arch/powerpc/kernel/traps.c
>@@ -376,6 +376,46 @@ int machine_check_440A(struct pt_regs *regs)
> }
> return 0;
> }
>+
>+int machine_check_47x(struct pt_regs *regs)
>+{
>+ unsigned long reason = get_mc_reason(regs);
>+ u32 mcsr;
>+
>+ printk(KERN_ERR "Machine check in kernel mode.\n");
>+ if (reason & ESR_IMCP) {
>+ printk(KERN_ERR
>+ "Instruction Synchronous Machine Check exception\n");
>+ mtspr(SPRN_ESR, reason & ~ESR_IMCP);
>+ return 0;
>+ }
>+ mcsr = mfspr(SPRN_MCSR);
>+ if (mcsr & MCSR_IB)
>+ printk(KERN_ERR "Instruction Read PLB Error\n");
>+ if (mcsr & MCSR_DRB)
>+ printk(KERN_ERR "Data Read PLB Error\n");
>+ if (mcsr & MCSR_DWB)
>+ printk(KERN_ERR "Data Write PLB Error\n");
>+ if (mcsr & MCSR_TLBP)
>+ printk(KERN_ERR "TLB Parity Error\n");
>+ if (mcsr & MCSR_ICP) {
>+ flush_instruction_cache();
>+ printk(KERN_ERR "I-Cache Parity Error\n");
>+ }
>+ if (mcsr & MCSR_DCSP)
>+ printk(KERN_ERR "D-Cache Search Parity Error\n");
>+ if (mcsr & PPC47x_MCSR_GPR)
>+ printk(KERN_ERR "GPR Parity Error\n");
>+ if (mcsr & PPC47x_MCSR_FPR)
>+ printk(KERN_ERR "FPR Parity Error\n");
>+ if (mcsr & PPC47x_MCSR_IPR)
>+ printk(KERN_ERR "Machine Check exception is imprecise\n");
This function isn't guarded by CONFIG_PPC_47x, however the defines for
PPC47x_MCSR_* are in include/asm/reg_booke.h. They were added that way in patch
4. As it stands, we get this when trying to build for plain 44x:
CC arch/powerpc/kernel/traps.o
arch/powerpc/kernel/traps.c: In function 'machine_check_47x':
arch/powerpc/kernel/traps.c:411: error: 'PPC47x_MCSR_GPR' undeclared (first use in this function)
arch/powerpc/kernel/traps.c:411: error: (Each undeclared identifier is reported only once
arch/powerpc/kernel/traps.c:411: error: for each function it appears in.)
arch/powerpc/kernel/traps.c:413: error: 'PPC47x_MCSR_FPR' undeclared (first use in this function)
arch/powerpc/kernel/traps.c:415: error: 'PPC47x_MCSR_IPR' undeclared (first use in this function)
make[1]: *** [arch/powerpc/kernel/traps.o] Error 1
make: *** [arch/powerpc/kernel] Error 2
make: *** Waiting for unfinished jobs....
We should probably guard this function behind CONFIG_PPC_47x, right? If so, I
can fix that up locally quickly enough.
josh
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 04/13] powerpc/476: add machine check handler for 47x core
2010-05-05 12:27 ` Josh Boyer
@ 2010-05-05 12:59 ` Josh Boyer
2010-05-05 13:05 ` Dave Kleikamp
0 siblings, 1 reply; 21+ messages in thread
From: Josh Boyer @ 2010-05-05 12:59 UTC (permalink / raw)
To: Dave Kleikamp; +Cc: linuxppc-dev list, Torez Smith
On Wed, May 05, 2010 at 08:27:01AM -0400, Josh Boyer wrote:
>>+int machine_check_47x(struct pt_regs *regs)
>>+{
>>+ unsigned long reason = get_mc_reason(regs);
>>+ u32 mcsr;
>>+
>>+ printk(KERN_ERR "Machine check in kernel mode.\n");
>>+ if (reason & ESR_IMCP) {
>>+ printk(KERN_ERR
>>+ "Instruction Synchronous Machine Check exception\n");
>>+ mtspr(SPRN_ESR, reason & ~ESR_IMCP);
>>+ return 0;
>>+ }
>>+ mcsr = mfspr(SPRN_MCSR);
>>+ if (mcsr & MCSR_IB)
>>+ printk(KERN_ERR "Instruction Read PLB Error\n");
>>+ if (mcsr & MCSR_DRB)
>>+ printk(KERN_ERR "Data Read PLB Error\n");
>>+ if (mcsr & MCSR_DWB)
>>+ printk(KERN_ERR "Data Write PLB Error\n");
>>+ if (mcsr & MCSR_TLBP)
>>+ printk(KERN_ERR "TLB Parity Error\n");
>>+ if (mcsr & MCSR_ICP) {
>>+ flush_instruction_cache();
>>+ printk(KERN_ERR "I-Cache Parity Error\n");
>>+ }
>>+ if (mcsr & MCSR_DCSP)
>>+ printk(KERN_ERR "D-Cache Search Parity Error\n");
>>+ if (mcsr & PPC47x_MCSR_GPR)
>>+ printk(KERN_ERR "GPR Parity Error\n");
>>+ if (mcsr & PPC47x_MCSR_FPR)
>>+ printk(KERN_ERR "FPR Parity Error\n");
>>+ if (mcsr & PPC47x_MCSR_IPR)
>>+ printk(KERN_ERR "Machine Check exception is imprecise\n");
>
>This function isn't guarded by CONFIG_PPC_47x, however the defines for
>PPC47x_MCSR_* are in include/asm/reg_booke.h. They were added that way in patch
>4. As it stands, we get this when trying to build for plain 44x:
>
> CC arch/powerpc/kernel/traps.o
>arch/powerpc/kernel/traps.c: In function 'machine_check_47x':
>arch/powerpc/kernel/traps.c:411: error: 'PPC47x_MCSR_GPR' undeclared (first use in this function)
>arch/powerpc/kernel/traps.c:411: error: (Each undeclared identifier is reported only once
>arch/powerpc/kernel/traps.c:411: error: for each function it appears in.)
>arch/powerpc/kernel/traps.c:413: error: 'PPC47x_MCSR_FPR' undeclared (first use in this function)
>arch/powerpc/kernel/traps.c:415: error: 'PPC47x_MCSR_IPR' undeclared (first use in this function)
>make[1]: *** [arch/powerpc/kernel/traps.o] Error 1
>make: *** [arch/powerpc/kernel] Error 2
>make: *** Waiting for unfinished jobs....
>
>
>We should probably guard this function behind CONFIG_PPC_47x, right? If so, I
>can fix that up locally quickly enough.
Actually, that won't work unless we wrap the .machine_check addition in cputable
as well. That looks ugly. I'm guessing the easiest and cleanest fix is to
not guard the #defines for those regs in reg_booke.h. Anyone have problems with
that?
josh
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 04/13] powerpc/476: add machine check handler for 47x core
2010-05-05 12:59 ` Josh Boyer
@ 2010-05-05 13:05 ` Dave Kleikamp
0 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-05-05 13:05 UTC (permalink / raw)
To: Josh Boyer; +Cc: linuxppc-dev list, Torez Smith
On Wed, 2010-05-05 at 08:59 -0400, Josh Boyer wrote:
> On Wed, May 05, 2010 at 08:27:01AM -0400, Josh Boyer wrote:
> >>+int machine_check_47x(struct pt_regs *regs)
> >>+{
> >>+ unsigned long reason = get_mc_reason(regs);
> >>+ u32 mcsr;
> >>+
> >>+ printk(KERN_ERR "Machine check in kernel mode.\n");
> >>+ if (reason & ESR_IMCP) {
> >>+ printk(KERN_ERR
> >>+ "Instruction Synchronous Machine Check exception\n");
> >>+ mtspr(SPRN_ESR, reason & ~ESR_IMCP);
> >>+ return 0;
> >>+ }
> >>+ mcsr = mfspr(SPRN_MCSR);
> >>+ if (mcsr & MCSR_IB)
> >>+ printk(KERN_ERR "Instruction Read PLB Error\n");
> >>+ if (mcsr & MCSR_DRB)
> >>+ printk(KERN_ERR "Data Read PLB Error\n");
> >>+ if (mcsr & MCSR_DWB)
> >>+ printk(KERN_ERR "Data Write PLB Error\n");
> >>+ if (mcsr & MCSR_TLBP)
> >>+ printk(KERN_ERR "TLB Parity Error\n");
> >>+ if (mcsr & MCSR_ICP) {
> >>+ flush_instruction_cache();
> >>+ printk(KERN_ERR "I-Cache Parity Error\n");
> >>+ }
> >>+ if (mcsr & MCSR_DCSP)
> >>+ printk(KERN_ERR "D-Cache Search Parity Error\n");
> >>+ if (mcsr & PPC47x_MCSR_GPR)
> >>+ printk(KERN_ERR "GPR Parity Error\n");
> >>+ if (mcsr & PPC47x_MCSR_FPR)
> >>+ printk(KERN_ERR "FPR Parity Error\n");
> >>+ if (mcsr & PPC47x_MCSR_IPR)
> >>+ printk(KERN_ERR "Machine Check exception is imprecise\n");
> >
> >This function isn't guarded by CONFIG_PPC_47x, however the defines for
> >PPC47x_MCSR_* are in include/asm/reg_booke.h. They were added that way in patch
> >4. As it stands, we get this when trying to build for plain 44x:
> >
> > CC arch/powerpc/kernel/traps.o
> >arch/powerpc/kernel/traps.c: In function 'machine_check_47x':
> >arch/powerpc/kernel/traps.c:411: error: 'PPC47x_MCSR_GPR' undeclared (first use in this function)
> >arch/powerpc/kernel/traps.c:411: error: (Each undeclared identifier is reported only once
> >arch/powerpc/kernel/traps.c:411: error: for each function it appears in.)
> >arch/powerpc/kernel/traps.c:413: error: 'PPC47x_MCSR_FPR' undeclared (first use in this function)
> >arch/powerpc/kernel/traps.c:415: error: 'PPC47x_MCSR_IPR' undeclared (first use in this function)
> >make[1]: *** [arch/powerpc/kernel/traps.o] Error 1
> >make: *** [arch/powerpc/kernel] Error 2
> >make: *** Waiting for unfinished jobs....
> >
> >
> >We should probably guard this function behind CONFIG_PPC_47x, right? If so, I
> >can fix that up locally quickly enough.
>
> Actually, that won't work unless we wrap the .machine_check addition in cputable
> as well. That looks ugly. I'm guessing the easiest and cleanest fix is to
> not guard the #defines for those regs in reg_booke.h. Anyone have problems with
> that?
I have no problems with that. Sorry for not being diligent and building
these patches with other configs.
Thanks,
Shaggy
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 06/13] powerpc/4xx: Simple platform for the ISS 4xx simulator
2010-03-05 20:45 ` [PATCH 06/13] powerpc/4xx: Simple platform for the ISS 4xx simulator Dave Kleikamp
@ 2010-05-05 15:11 ` Josh Boyer
2010-05-05 15:16 ` Dave Kleikamp
0 siblings, 1 reply; 21+ messages in thread
From: Josh Boyer @ 2010-05-05 15:11 UTC (permalink / raw)
To: Dave Kleikamp; +Cc: linuxppc-dev list, Torez Smith
On Fri, Mar 05, 2010 at 01:45:54PM -0700, Dave Kleikamp wrote:
>+config ISS4xx
>+ bool "ISS 4xx Simulator"
>+ depends on (44x || 40x)
>+ default n
>+ select 405GP if 40x
>+ select 440GP if 44x && !PPC_47x
>+ select PPC_FPU
>+ select OF_RTC
>+ help
>+ This option enables support for the IBM ISS simulation environment
This looks like how we want to do this, however...
>+/* We can have either UICs or MPICs */
>+static void __init iss4xx_init_irq(void)
>+{
>+ struct device_node *np;
>+
>+ /* Find top level interrupt controller */
>+ for_each_node_with_property(np, "interrupt-controller") {
>+ if (of_get_property(np, "interrupts", NULL) == NULL)
>+ break;
>+ }
>+ if (np == NULL)
>+ panic("Can't find top level interrupt controller");
>+
>+ /* Check type and do appropriate initialization */
>+ if (of_device_is_compatible(np, "ibm,uic")) {
>+ uic_init_tree();
>+ ppc_md.get_irq = uic_get_irq;
>+ } else if (of_device_is_compatible(np, "chrp,open-pic")) {
>+ /* The MPIC driver will get everything it needs from the
>+ * device-tree, just pass 0 to all arguments
>+ */
>+ struct mpic *mpic = mpic_alloc(np, 0, MPIC_PRIMARY, 0, 0,
>+ " MPIC ");
>+ BUG_ON(mpic == NULL);
>+ mpic_init(mpic);
>+ ppc_md.get_irq = mpic_get_irq;
>+ } else
>+ panic("Unrecognized top level interrupt controller");
>+}
.. on non-476 builds we get link errors:
arch/powerpc/platforms/built-in.o: In function `as1_writeb':
(.init.text+0x5d4): undefined reference to `mpic_alloc'
arch/powerpc/platforms/built-in.o: In function `as1_writeb':
(.init.text+0x5e4): undefined reference to `mpic_init'
arch/powerpc/platforms/built-in.o: In function `as1_writeb':
(.init.text+0x5ea): undefined reference to `mpic_get_irq'
arch/powerpc/platforms/built-in.o: In function `as1_writeb':
(.init.text+0x5ee): undefined reference to `mpic_get_irq'
make: *** [.tmp_vmlinux1] Error 1
because we don't have CONFIG_MPIC turned on for these. I'd suggest we guard
the mpic else chunk in this file behind CONFIG_MPIC. Agreed?
I'm less worried about the mpic references that are already guarded behind the
CONFIG_SMP sections. Nobody has been crazy enough to make an SMP 440 or 460 SoC
yet, so CONFIG_SMP should only get selected for 476, and that already selects
MPIC in the Kconfig.
josh
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH 06/13] powerpc/4xx: Simple platform for the ISS 4xx simulator
2010-05-05 15:11 ` Josh Boyer
@ 2010-05-05 15:16 ` Dave Kleikamp
0 siblings, 0 replies; 21+ messages in thread
From: Dave Kleikamp @ 2010-05-05 15:16 UTC (permalink / raw)
To: Josh Boyer; +Cc: linuxppc-dev list, Torez Smith
On Wed, 2010-05-05 at 11:11 -0400, Josh Boyer wrote:
> On Fri, Mar 05, 2010 at 01:45:54PM -0700, Dave Kleikamp wrote:
> >+config ISS4xx
> >+ bool "ISS 4xx Simulator"
> >+ depends on (44x || 40x)
> >+ default n
> >+ select 405GP if 40x
> >+ select 440GP if 44x && !PPC_47x
> >+ select PPC_FPU
> >+ select OF_RTC
> >+ help
> >+ This option enables support for the IBM ISS simulation environment
>
> This looks like how we want to do this, however...
>
> >+/* We can have either UICs or MPICs */
> >+static void __init iss4xx_init_irq(void)
> >+{
> >+ struct device_node *np;
> >+
> >+ /* Find top level interrupt controller */
> >+ for_each_node_with_property(np, "interrupt-controller") {
> >+ if (of_get_property(np, "interrupts", NULL) == NULL)
> >+ break;
> >+ }
> >+ if (np == NULL)
> >+ panic("Can't find top level interrupt controller");
> >+
> >+ /* Check type and do appropriate initialization */
> >+ if (of_device_is_compatible(np, "ibm,uic")) {
> >+ uic_init_tree();
> >+ ppc_md.get_irq = uic_get_irq;
> >+ } else if (of_device_is_compatible(np, "chrp,open-pic")) {
> >+ /* The MPIC driver will get everything it needs from the
> >+ * device-tree, just pass 0 to all arguments
> >+ */
> >+ struct mpic *mpic = mpic_alloc(np, 0, MPIC_PRIMARY, 0, 0,
> >+ " MPIC ");
> >+ BUG_ON(mpic == NULL);
> >+ mpic_init(mpic);
> >+ ppc_md.get_irq = mpic_get_irq;
> >+ } else
> >+ panic("Unrecognized top level interrupt controller");
> >+}
>
> .. on non-476 builds we get link errors:
>
> arch/powerpc/platforms/built-in.o: In function `as1_writeb':
> (.init.text+0x5d4): undefined reference to `mpic_alloc'
> arch/powerpc/platforms/built-in.o: In function `as1_writeb':
> (.init.text+0x5e4): undefined reference to `mpic_init'
> arch/powerpc/platforms/built-in.o: In function `as1_writeb':
> (.init.text+0x5ea): undefined reference to `mpic_get_irq'
> arch/powerpc/platforms/built-in.o: In function `as1_writeb':
> (.init.text+0x5ee): undefined reference to `mpic_get_irq'
> make: *** [.tmp_vmlinux1] Error 1
>
> because we don't have CONFIG_MPIC turned on for these. I'd suggest we guard
> the mpic else chunk in this file behind CONFIG_MPIC. Agreed?
Yeah. That's reasonable.
> I'm less worried about the mpic references that are already guarded behind the
> CONFIG_SMP sections. Nobody has been crazy enough to make an SMP 440 or 460 SoC
> yet, so CONFIG_SMP should only get selected for 476, and that already selects
> MPIC in the Kconfig.
>
> josh
--
Dave Kleikamp
IBM Linux Technology Center
^ permalink raw reply [flat|nested] 21+ messages in thread
end of thread, other threads:[~2010-05-05 15:16 UTC | newest]
Thread overview: 21+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-03-05 20:42 [PATCH 00/13] powerpc/47x: Support for 476 core - Version 2 Dave Kleikamp
2010-03-05 13:43 ` [PATCH 04/13] powerpc/476: add machine check handler for 47x core Dave Kleikamp
2010-05-05 12:27 ` Josh Boyer
2010-05-05 12:59 ` Josh Boyer
2010-05-05 13:05 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 01/13] powerpc/booke: Add Stack Marking support to Booke Exception Prolog Dave Kleikamp
2010-03-05 20:43 ` [PATCH 02/13] powerpc/44x: break out cpu init code into stand-alone function Dave Kleikamp
2010-03-05 20:43 ` [PATCH 03/13] powerpc/47x: Base ppc476 support Dave Kleikamp
2010-03-05 20:43 ` [PATCH 05/13] powerpc/476: Add isync after loading mmu and debug spr's Dave Kleikamp
2010-03-07 23:08 ` Hollis Blanchard
2010-03-10 21:09 ` Dave Kleikamp
2010-03-05 20:43 ` [PATCH 07/13] powerpc/47x: defconfig for 476 on the iss 4xx simulator Dave Kleikamp
2010-03-05 20:43 ` [PATCH 08/13] powerpc/476: define specific cpu table entry DD1.1 core Dave Kleikamp
2010-03-05 20:43 ` [PATCH 09/13] powerpc/476: Workaround for dcbf/dcbz workaround on DD1 Dave Kleikamp
2010-03-05 20:43 ` [PATCH 10/13] powerpc/476: Add isync to the top of all exception handlers for DD1.1 core Dave Kleikamp
2010-03-05 20:43 ` [PATCH 11/13] powerpc/476: Software workaround to fix dcr read/write sequencing Dave Kleikamp
2010-03-05 20:44 ` [PATCH 12/13] powerpc/476: Workaround for DD1.1: Issue lwsync after mtpid Dave Kleikamp
2010-03-05 20:44 ` [PATCH 13/13] powerpc/476: Add dci instruction to async interrupt handlers on DD1 core Dave Kleikamp
2010-03-05 20:45 ` [PATCH 06/13] powerpc/4xx: Simple platform for the ISS 4xx simulator Dave Kleikamp
2010-05-05 15:11 ` Josh Boyer
2010-05-05 15:16 ` Dave Kleikamp
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