[PATCH 1/7] common: spl: move armv7m-specific code to spl_perform_fixups()

[PATCH 1/7] common: spl: move armv7m-specific code to spl_perform_fixups()

[Ovidiu Panait]

Factor out armv7m fragment to spl_perform_fixups(), which is an arch/board
specific function designed for this purpose.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---

 arch/arm/cpu/armv7m/cpu.c | 6 ++++++
 common/spl/spl.c          | 3 ---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/arm/cpu/armv7m/cpu.c b/arch/arm/cpu/armv7m/cpu.c
index 63721018c1..65427b5312 100644
--- a/arch/arm/cpu/armv7m/cpu.c
+++ b/arch/arm/cpu/armv7m/cpu.c
@@ -12,6 +12,7 @@
 #include <irq_func.h>
 #include <asm/io.h>
 #include <asm/armv7m.h>
+#include <spl.h>
 
 /*
  * This is called right before passing control to
@@ -56,3 +57,8 @@ void reset_cpu(void)
 		| (V7M_SCB->aircr & V7M_AIRCR_PRIGROUP_MSK)
 		| V7M_AIRCR_SYSRESET, &V7M_SCB->aircr);
 }
+
+void spl_perform_fixups(struct spl_image_info *spl_image)
+{
+	spl_image->entry_point |= 0x1;
+}
diff --git a/common/spl/spl.c b/common/spl/spl.c
index 0c08da06e8..63556f35bd 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -770,9 +770,6 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 			       ret);
 	}
 
-#ifdef CONFIG_CPU_V7M
-	spl_image.entry_point |= 0x1;
-#endif
 	switch (spl_image.os) {
 	case IH_OS_U_BOOT:
 		debug("Jumping to %s...\n", spl_phase_name(spl_next_phase()));
-- 
2.25.1

[PATCH 2/7] common: board_r: move bedbug_init() to common code

[Ovidiu Panait]

bedbug/types.h is included to provide bedbug_init() declaration, which is
an empty stub that is only called from the common init sequence. In order
to get rid of this dependency and the associated #ifdef:
* move the bedbug_init() declaration from include/bedbug/type.h to
  include/init.h
* provide a weak stub for bedbug_init() in board_r.c, so each CPU can
  provide its own implementation, as explained in the function comment

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---

 cmd/bedbug.c          | 14 --------------
 common/board_r.c      | 10 ++++++----
 include/bedbug/type.h |  1 -
 include/init.h        | 11 +++++++++++
 4 files changed, 17 insertions(+), 19 deletions(-)

diff --git a/cmd/bedbug.c b/cmd/bedbug.c
index 0bd67fcf47..7fc206bd26 100644
--- a/cmd/bedbug.c
+++ b/cmd/bedbug.c
@@ -38,20 +38,6 @@ int bedbug_puts (const char *str)
 	return 0;
 }				/* bedbug_puts */
 
-
-/* ======================================================================
- * Initialize the bug_ctx structure used by the bedbug debugger.  This is
- * specific to the CPU since each has different debug registers and
- * settings.
- * ====================================================================== */
-
-int bedbug_init(void)
-{
-	/* -------------------------------------------------- */
-	return 0;
-}				/* bedbug_init */
-
-
 /* ======================================================================
  * Entry point from the interpreter to the disassembler.  Repeated calls
  * will resume from the last disassembled address.
diff --git a/common/board_r.c b/common/board_r.c
index 31a59c585a..a5c1af9c1f 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -23,10 +23,6 @@
 #include <asm/cache.h>
 #include <asm/global_data.h>
 #include <u-boot/crc.h>
-/* TODO: can we just include all these headers whether needed or not? */
-#if defined(CONFIG_CMD_BEDBUG)
-#include <bedbug/type.h>
-#endif
 #include <binman.h>
 #include <command.h>
 #include <console.h>
@@ -37,6 +33,7 @@
 #include <ide.h>
 #include <init.h>
 #include <initcall.h>
+/* TODO: can we just include all these headers whether needed or not? */
 #if defined(CONFIG_CMD_KGDB)
 #include <kgdb.h>
 #endif
@@ -568,6 +565,11 @@ static int initr_ide(void)
 }
 #endif
 
+__weak int bedbug_init(void)
+{
+	return 0;
+}
+
 #if defined(CONFIG_PRAM)
 /*
  * Export available size of memory for Linux, taking into account the
diff --git a/include/bedbug/type.h b/include/bedbug/type.h
index f7a719caf0..99c3d4d83e 100644
--- a/include/bedbug/type.h
+++ b/include/bedbug/type.h
@@ -5,7 +5,6 @@ struct cmd_tbl;
 
 /* Supporting routines */
 int bedbug_puts (const char *);
-int bedbug_init(void);
 void bedbug860_init (void);
 void do_bedbug_breakpoint (struct pt_regs *);
 void bedbug_main_loop (unsigned long, struct pt_regs *);
diff --git a/include/init.h b/include/init.h
index c781789e36..e11472ac09 100644
--- a/include/init.h
+++ b/include/init.h
@@ -307,6 +307,17 @@ int board_early_init_r(void);
  */
 int arch_initr_trap(void);
 
+/**
+ * bedbug_init() - init bedbug debugger
+ *
+ * Initialize the bug_ctx structure used by the bedbug debugger.  This is
+ * specific to the CPU since each has different debug registers and
+ * settings.
+ *
+ * Return: 0 if OK
+ */
+int bedbug_init(void);
+
 /**
  * main_loop() - Enter the main loop of U-Boot
  *
-- 
2.25.1

[PATCH 3/7] common: board_r: drop initr_kgdb wrapper

[Ovidiu Panait]

Add a return value to kgdb_init and use it directly in the post-relocation
init sequence, rather than using a wrapper stub. Also, move the "KGDB"
print message inside kgdb_init().

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---

 common/board_r.c | 11 +----------
 common/kgdb.c    |  7 +++++--
 include/kgdb.h   |  2 +-
 3 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/common/board_r.c b/common/board_r.c
index a5c1af9c1f..1c7397b29e 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -498,15 +498,6 @@ static int initr_ethaddr(void)
 }
 #endif /* CONFIG_CMD_NET */
 
-#ifdef CONFIG_CMD_KGDB
-static int initr_kgdb(void)
-{
-	puts("KGDB:  ");
-	kgdb_init();
-	return 0;
-}
-#endif
-
 #if defined(CONFIG_LED_STATUS)
 static int initr_status_led(void)
 {
@@ -750,7 +741,7 @@ static init_fnc_t init_sequence_r[] = {
 #endif
 	INIT_FUNC_WATCHDOG_RESET
 #ifdef CONFIG_CMD_KGDB
-	initr_kgdb,
+	kgdb_init,
 #endif
 	interrupt_init,
 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
diff --git a/common/kgdb.c b/common/kgdb.c
index 4493a15919..29b09fcfe5 100644
--- a/common/kgdb.c
+++ b/common/kgdb.c
@@ -527,15 +527,18 @@ handle_exception (struct pt_regs *regs)
  * kgdb_init must be called *after* the
  * monitor is relocated into ram
  */
-void
-kgdb_init(void)
+int kgdb_init(void)
 {
+	puts("KGDB:  ");
+
 	kgdb_serial_init();
 	debugger_exception_handler = handle_exception;
 	initialized = 1;
 
 	putDebugStr("kgdb ready\n");
 	puts("ready\n");
+
+	return 0;
 }
 
 void
diff --git a/include/kgdb.h b/include/kgdb.h
index 616ce4451f..0609eadade 100644
--- a/include/kgdb.h
+++ b/include/kgdb.h
@@ -39,7 +39,7 @@ typedef
 kgdb_data;
 
 /* these functions are provided by the generic kgdb support */
-extern void kgdb_init(void);
+extern int kgdb_init(void);
 extern void kgdb_error(int);
 extern int kgdb_output_string(const char *, unsigned int);
 extern void breakpoint(void);
-- 
2.25.1

[PATCH 4/7] common: board_r: drop initr_addr_map wrapper

[Ovidiu Panait]

Add a return value to init_addr_map and use it directly in the
post-relocation init sequence, rather than using a wrapper stub.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---

 arch/arm/include/asm/mmu.h     |  2 +-
 arch/arm/mach-bcm283x/init.c   |  4 +++-
 arch/powerpc/cpu/mpc85xx/tlb.c |  4 ++--
 arch/powerpc/include/asm/mmu.h |  2 +-
 common/board_r.c               | 11 +----------
 5 files changed, 8 insertions(+), 15 deletions(-)

diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h
index 9ac16f599e..8449720fad 100644
--- a/arch/arm/include/asm/mmu.h
+++ b/arch/arm/include/asm/mmu.h
@@ -3,6 +3,6 @@
 #ifndef __ASM_ARM_MMU_H
 #define __ASM_ARM_MMU_H
 
-void init_addr_map(void);
+int init_addr_map(void);
 
 #endif
diff --git a/arch/arm/mach-bcm283x/init.c b/arch/arm/mach-bcm283x/init.c
index 9803499985..183650a90a 100644
--- a/arch/arm/mach-bcm283x/init.c
+++ b/arch/arm/mach-bcm283x/init.c
@@ -152,7 +152,7 @@ int mach_cpu_init(void)
 #include <addr_map.h>
 #include <asm/system.h>
 
-void init_addr_map(void)
+int init_addr_map(void)
 {
 	mmu_set_region_dcache_behaviour_phys(BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT,
 					     BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS,
@@ -165,6 +165,8 @@ void init_addr_map(void)
 	addrmap_set_entry(BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT,
 			  BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS,
 			  BCM2711_RPI4_PCIE_XHCI_MMIO_SIZE, 1);
+
+	return 0;
 }
 #endif
 
diff --git a/arch/powerpc/cpu/mpc85xx/tlb.c b/arch/powerpc/cpu/mpc85xx/tlb.c
index 973b6fbe4b..aa9b59d487 100644
--- a/arch/powerpc/cpu/mpc85xx/tlb.c
+++ b/arch/powerpc/cpu/mpc85xx/tlb.c
@@ -219,7 +219,7 @@ int find_tlb_idx(void *addr, u8 tlbsel)
 }
 
 #ifdef CONFIG_ADDR_MAP
-void init_addr_map(void)
+int init_addr_map(void)
 {
 	int i;
 	unsigned int num_cam = mfspr(SPRN_TLB1CFG) & 0xfff;
@@ -235,7 +235,7 @@ void init_addr_map(void)
 			addrmap_set_entry(epn, rpn, TSIZE_TO_BYTES(tsize), i);
 	}
 
-	return ;
+	return 0;
 }
 #endif
 
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 353dc4e874..cb5b26cd77 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -138,7 +138,7 @@ extern void _tlbie(unsigned long va);	/* invalidate a TLB entry */
 extern void _tlbia(void);		/* invalidate all TLB entries */
 
 #ifdef CONFIG_ADDR_MAP
-extern void init_addr_map(void);
+extern int init_addr_map(void);
 #endif
 
 typedef enum {
diff --git a/common/board_r.c b/common/board_r.c
index 1c7397b29e..0b8f2a0b91 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -186,15 +186,6 @@ __weak int arch_initr_trap(void)
 	return 0;
 }
 
-#ifdef CONFIG_ADDR_MAP
-static int initr_addr_map(void)
-{
-	init_addr_map();
-
-	return 0;
-}
-#endif
-
 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
 static int initr_unlock_ram_in_cache(void)
 {
@@ -628,7 +619,7 @@ static init_fnc_t init_sequence_r[] = {
 	initr_dm,
 #endif
 #ifdef CONFIG_ADDR_MAP
-	initr_addr_map,
+	init_addr_map,
 #endif
 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
 	defined(CONFIG_SANDBOX)
-- 
2.25.1

Re: [PATCH 4/7] common: board_r: drop initr_addr_map wrapper

[Matthias Brugger]

On 30/10/2021 08:51, Ovidiu Panait wrote:
> Add a return value to init_addr_map and use it directly in the
> post-relocation init sequence, rather than using a wrapper stub.
> 
> Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
> ---
> 
>   arch/arm/include/asm/mmu.h     |  2 +-
>   arch/arm/mach-bcm283x/init.c   |  4 +++-
>   arch/powerpc/cpu/mpc85xx/tlb.c |  4 ++--
>   arch/powerpc/include/asm/mmu.h |  2 +-
>   common/board_r.c               | 11 +----------
>   5 files changed, 8 insertions(+), 15 deletions(-)
[...]
> diff --git a/arch/arm/mach-bcm283x/init.c b/arch/arm/mach-bcm283x/init.c
> index 9803499985..183650a90a 100644
> --- a/arch/arm/mach-bcm283x/init.c
> +++ b/arch/arm/mach-bcm283x/init.c
> @@ -152,7 +152,7 @@ int mach_cpu_init(void)
>   #include <addr_map.h>
>   #include <asm/system.h>
>   
> -void init_addr_map(void)
> +int init_addr_map(void)
>   {
>   	mmu_set_region_dcache_behaviour_phys(BCM2711_RPI4_PCIE_XHCI_MMIO_VIRT,
>   					     BCM2711_RPI4_PCIE_XHCI_MMIO_PHYS,

For the bcm283x part:
Reviewed-by: Matthias Brugger <mbrugger@suse.com>

Re: [PATCH 4/7] common: board_r: drop initr_addr_map wrapper

[Simon Glass]

On Sat, 30 Oct 2021 at 00:52, Ovidiu Panait <ovidiu.panait@windriver.com> wrote:
>
> Add a return value to init_addr_map and use it directly in the
> post-relocation init sequence, rather than using a wrapper stub.
>
> Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
> ---
>
>  arch/arm/include/asm/mmu.h     |  2 +-
>  arch/arm/mach-bcm283x/init.c   |  4 +++-
>  arch/powerpc/cpu/mpc85xx/tlb.c |  4 ++--
>  arch/powerpc/include/asm/mmu.h |  2 +-
>  common/board_r.c               | 11 +----------
>  5 files changed, 8 insertions(+), 15 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>

[PATCH 5/7] common: board_r: move init_addr_map() to init.h

[Ovidiu Panait]

asm/mmu.h include is currently guarded by CONFIG_ADDR_MAP ifdef because
the header is only present on arm and powerpc. In order to remove the
dependency on this header and the associated ifdef, move init_addr_map()
declaration to init.h, since it is only called during the common init
sequence.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---

 arch/arm/include/asm/mmu.h                  |  8 --------
 arch/powerpc/cpu/mpc85xx/tlb.c              |  1 +
 arch/powerpc/include/asm/mmu.h              |  4 ----
 board/freescale/common/fsl_chain_of_trust.c |  5 +----
 common/board_r.c                            |  3 ---
 include/init.h                              | 10 ++++++++++
 6 files changed, 12 insertions(+), 19 deletions(-)
 delete mode 100644 arch/arm/include/asm/mmu.h

diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h
deleted file mode 100644
index 8449720fad..0000000000
--- a/arch/arm/include/asm/mmu.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-
-#ifndef __ASM_ARM_MMU_H
-#define __ASM_ARM_MMU_H
-
-int init_addr_map(void);
-
-#endif
diff --git a/arch/powerpc/cpu/mpc85xx/tlb.c b/arch/powerpc/cpu/mpc85xx/tlb.c
index aa9b59d487..550d45da0e 100644
--- a/arch/powerpc/cpu/mpc85xx/tlb.c
+++ b/arch/powerpc/cpu/mpc85xx/tlb.c
@@ -7,6 +7,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 #include <asm/bitops.h>
 #include <asm/global_data.h>
 #include <asm/processor.h>
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index cb5b26cd77..2e6255f0d6 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -137,10 +137,6 @@ typedef struct _MMU_context {
 extern void _tlbie(unsigned long va);	/* invalidate a TLB entry */
 extern void _tlbia(void);		/* invalidate all TLB entries */
 
-#ifdef CONFIG_ADDR_MAP
-extern int init_addr_map(void);
-#endif
-
 typedef enum {
 	IBAT0 = 0, IBAT1, IBAT2, IBAT3,
 	DBAT0, DBAT1, DBAT2, DBAT3,
diff --git a/board/freescale/common/fsl_chain_of_trust.c b/board/freescale/common/fsl_chain_of_trust.c
index cafb24971b..7ffb315bc9 100644
--- a/board/freescale/common/fsl_chain_of_trust.c
+++ b/board/freescale/common/fsl_chain_of_trust.c
@@ -6,6 +6,7 @@
 #include <common.h>
 #include <dm.h>
 #include <env.h>
+#include <init.h>
 #include <fsl_validate.h>
 #include <fsl_secboot_err.h>
 #include <fsl_sfp.h>
@@ -16,10 +17,6 @@
 #include <spl.h>
 #endif
 
-#ifdef CONFIG_ADDR_MAP
-#include <asm/mmu.h>
-#endif
-
 #ifdef CONFIG_FSL_CORENET
 #include <asm/fsl_pamu.h>
 #endif
diff --git a/common/board_r.c b/common/board_r.c
index 0b8f2a0b91..af900e2c6e 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -59,9 +59,6 @@
 #ifdef CONFIG_XEN
 #include <xen.h>
 #endif
-#ifdef CONFIG_ADDR_MAP
-#include <asm/mmu.h>
-#endif
 #include <asm/sections.h>
 #include <dm/root.h>
 #include <dm/ofnode.h>
diff --git a/include/init.h b/include/init.h
index e11472ac09..09a1ccefc9 100644
--- a/include/init.h
+++ b/include/init.h
@@ -318,6 +318,16 @@ int arch_initr_trap(void);
  */
 int bedbug_init(void);
 
+/**
+ * init_addr_map()
+ *
+ * Initialize non-identity virtual-physical memory mappings for 32bit CPUs.
+ * It is called during the generic board init sequence, after relocation.
+ *
+ * Return: 0 if OK
+ */
+int init_addr_map(void);
+
 /**
  * main_loop() - Enter the main loop of U-Boot
  *
-- 
2.25.1

[PATCH 6/7] common: board_r: include asm-generic/gpio.h

[Ovidiu Panait]

Not all architectures define <asm/gpio.h> and even on those that do, the
header cannot be included for all boards without causing various build
failures.

Since common/board_r.c only needs gpio_hog_probe_all() declaration, include
<asm-generic/gpio.h> and drop the associated ifdef.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---

 common/board_r.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/common/board_r.c b/common/board_r.c
index af900e2c6e..506aa446fc 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -66,9 +66,7 @@
 #include <linux/err.h>
 #include <efi_loader.h>
 #include <wdt.h>
-#if defined(CONFIG_GPIO_HOG)
-#include <asm/gpio.h>
-#endif
+#include <asm-generic/gpio.h>
 #ifdef CONFIG_EFI_SETUP_EARLY
 #include <efi_loader.h>
 #endif
-- 
2.25.1

[PATCH 7/7] common: board_r: drop ifdefs around header includes

[Ovidiu Panait]

Drop the remaining ifdefs around header includes, to fix an old TODO.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---

 common/board_r.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/common/board_r.c b/common/board_r.c
index 506aa446fc..18a4849420 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -33,16 +33,11 @@
 #include <ide.h>
 #include <init.h>
 #include <initcall.h>
-/* TODO: can we just include all these headers whether needed or not? */
-#if defined(CONFIG_CMD_KGDB)
 #include <kgdb.h>
-#endif
 #include <irq_func.h>
 #include <malloc.h>
 #include <mapmem.h>
-#ifdef CONFIG_BITBANGMII
 #include <miiphy.h>
-#endif
 #include <mmc.h>
 #include <mux.h>
 #include <nand.h>
@@ -56,9 +51,7 @@
 #include <timer.h>
 #include <trace.h>
 #include <watchdog.h>
-#ifdef CONFIG_XEN
 #include <xen.h>
-#endif
 #include <asm/sections.h>
 #include <dm/root.h>
 #include <dm/ofnode.h>
@@ -67,9 +60,7 @@
 #include <efi_loader.h>
 #include <wdt.h>
 #include <asm-generic/gpio.h>
-#ifdef CONFIG_EFI_SETUP_EARLY
 #include <efi_loader.h>
-#endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
-- 
2.25.1