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* [U-Boot] [PATCH 1/2] armv8: ls1043a: modify the detecting way to cover all variants
@ 2017-11-30  2:57 Wenbin song
  2017-11-30  2:57 ` [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes Wenbin song
  0 siblings, 1 reply; 6+ messages in thread
From: Wenbin song @ 2017-11-30  2:57 UTC (permalink / raw)
  To: u-boot

There are many variants for ls1043a. Modify the detecting way to
make that the below fixup apply to all variants of ls1043a.
	- Fix GIC offset for rev1.1
	- Fix msi node for rev1.1
	- erratum_a010151

Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
---
 arch/arm/cpu/armv8/fsl-layerscape/fdt.c        | 4 ++--
 arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S   | 5 ++---
 arch/arm/include/asm/arch-fsl-layerscape/soc.h | 3 +++
 drivers/usb/common/fsl-errata.c                | 7 +++++--
 4 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
index d6794708c9..33f3e64848 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
@@ -147,7 +147,7 @@ static void fdt_fixup_gic(void *blob)
 
 	val = gur_in32(&gur->svr);
 
-	if (SVR_SOC_VER(val) != SVR_LS1043A) {
+	if (!IS_SVR_DEV(val, SVR_DEV_LS1043A)) {
 		align_64k = 1;
 	} else if (SVR_REV(val) != REV1_0) {
 		val = scfg_in32(&scfg->gic_align) & (0x01 << GIC_ADDR_BIT);
@@ -329,7 +329,7 @@ static void fdt_fixup_msi(void *blob)
 
 	rev = gur_in32(&gur->svr);
 
-	if (SVR_SOC_VER(rev) != SVR_LS1043A)
+	if (!IS_SVR_DEV(rev, SVR_DEV_LS1043A))
 		return;
 
 	rev = SVR_REV(rev);
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S b/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
index 28a31b21a9..666e842b99 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
+++ b/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
@@ -37,9 +37,8 @@ ENTRY(get_gic_offset)
 	ldr     x2, =DCFG_CCSR_SVR
 	ldr	w2, [x2]
 	rev	w2, w2
-	mov	w3, w2
-	ands	w3, w3, #SVR_WO_E << 8
-	mov	w4, #SVR_LS1043A << 8
+	lsr	w3, w2, #16
+	ldr	w4, =SVR_DEV_LS1043A
 	cmp	w3, w4
 	b.ne	1f
 	ands	w2, w2, #0xff
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/soc.h b/arch/arm/include/asm/arch-fsl-layerscape/soc.h
index 08a42b9c9e..7c189530c1 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/soc.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/soc.h
@@ -73,6 +73,7 @@ struct cpu_type {
 #define SVR_LS2041A		0x870914
 
 #define SVR_DEV_LS2080A		0x8701
+#define SVR_DEV_LS1043A		0x8792
 
 #define SVR_MAJ(svr)		(((svr) >> 4) & 0xf)
 #define SVR_MIN(svr)		(((svr) >> 0) & 0xf)
@@ -81,6 +82,8 @@ struct cpu_type {
 #define IS_E_PROCESSOR(svr)	(!((svr >> 8) & 0x1))
 #define IS_SVR_REV(svr, maj, min) \
 		((SVR_MAJ(svr) == (maj)) && (SVR_MIN(svr) == (min)))
+#define IS_SVR_DEV(svr, dev) \
+		(((svr) >> 16) == (dev))
 
 /* ahci port register default value */
 #define AHCI_PORT_PHY_1_CFG    0xa003fffe
diff --git a/drivers/usb/common/fsl-errata.c b/drivers/usb/common/fsl-errata.c
index 823beb32f6..c20c9a3567 100644
--- a/drivers/usb/common/fsl-errata.c
+++ b/drivers/usb/common/fsl-errata.c
@@ -198,6 +198,11 @@ bool has_erratum_a010151(void)
 	u32 svr = get_svr();
 	u32 soc = SVR_SOC_VER(svr);
 
+#ifdef CONFIG_ARM64
+	if (IS_SVR_DEV(svr, SVR_DEV_LS1043A))
+		return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 1, 1);
+#endif
+
 	switch (soc) {
 #ifdef CONFIG_ARM64
 	case SVR_LS2080A:
@@ -209,8 +214,6 @@ bool has_erratum_a010151(void)
 	case SVR_LS1046A:
 	case SVR_LS1012A:
 		return IS_SVR_REV(svr, 1, 0);
-	case SVR_LS1043A:
-		return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 1, 1);
 #endif
 #ifdef CONFIG_ARCH_LS1021A
 	case SOC_VER_LS1020:
-- 
2.14.1

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes
  2017-11-30  2:57 [U-Boot] [PATCH 1/2] armv8: ls1043a: modify the detecting way to cover all variants Wenbin song
@ 2017-11-30  2:57 ` Wenbin song
  2017-11-30  4:55   ` Prabhakar Kushwaha
  2017-11-30 17:41   ` York Sun
  0 siblings, 2 replies; 6+ messages in thread
From: Wenbin song @ 2017-11-30  2:57 UTC (permalink / raw)
  To: u-boot

Using "cpu_pos_mask()" function to detect the real online cpus,
and discard the needless cpu nodes on kernel dft.

Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
---
 arch/arm/cpu/armv8/fsl-layerscape/Kconfig |  4 ++++
 arch/arm/cpu/armv8/fsl-layerscape/fdt.c   | 32 +++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 47145a2432..971a98c6cc 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -176,6 +176,10 @@ config HAS_FEATURE_ENHANCED_MSI
 	bool
 	default y if ARCH_LS1043A
 
+config DISCARD_OFFLINE_CPU_NODES
+	bool
+	default y if ARCH_LS1043A
+
 menu "Layerscape PPA"
 config FSL_LS_PPA
 	bool "FSL Layerscape PPA firmware support"
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
index 33f3e64848..241f0abe18 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
@@ -44,6 +44,38 @@ void ft_fixup_cpu(void *blob)
 	int addr_cells;
 	u64 val, core_id;
 	size_t *boot_code_size = &(__secondary_boot_code_size);
+
+#if defined(CONFIG_DISCARD_OFFLINE_CPU_NODES)
+	u32 mask = cpu_pos_mask();
+	int off_prev = -1;
+	int pos;
+
+	off = fdt_path_offset(blob, "/cpus");
+	if (off < 0) {
+		puts("couldn't find /cpus node\n");
+		return;
+	}
+
+	fdt_support_default_count_cells(blob, off, &addr_cells, NULL);
+
+	off = fdt_node_offset_by_prop_value(blob, off_prev, "device_type",
+					    "cpu", 4);
+	while (off != -FDT_ERR_NOTFOUND) {
+		reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0);
+		if (reg) {
+			core_id = fdt_read_number(reg, addr_cells);
+			pos = ((core_id & 0xff00) >> 5) + (core_id & 0xff);
+			if (!test_bit(pos, &mask)) {
+				fdt_del_node(blob, off);
+				off = off_prev;
+			}
+		}
+		off_prev = off;
+		off = fdt_node_offset_by_prop_value(blob, off_prev,
+						    "device_type", "cpu", 4);
+	}
+#endif
+
 #if defined(CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT) && \
 	defined(CONFIG_SEC_FIRMWARE_ARMV8_PSCI)
 	int node;
-- 
2.14.1

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes
  2017-11-30  2:57 ` [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes Wenbin song
@ 2017-11-30  4:55   ` Prabhakar Kushwaha
  2017-11-30  9:56     ` Wenbin Song
  2017-11-30 17:41   ` York Sun
  1 sibling, 1 reply; 6+ messages in thread
From: Prabhakar Kushwaha @ 2017-11-30  4:55 UTC (permalink / raw)
  To: u-boot


> -----Original Message-----
> From: Wenbin song [mailto:wenbin.song at nxp.com]
> Sent: Thursday, November 30, 2017 8:27 AM
> To: York Sun <york.sun@nxp.com>; Prabhakar Kushwaha
> <prabhakar.kushwaha@nxp.com>; Ran Wang <ran.wang_1@nxp.com>; Mingkai
> Hu <mingkai.hu@nxp.com>; u-boot at lists.denx.de
> Cc: Wenbin Song <wenbin.song@nxp.com>
> Subject: [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes
> 
> Using "cpu_pos_mask()" function to detect the real online cpus,
> and discard the needless cpu nodes on kernel dft.
> 
> Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
> ---
>  arch/arm/cpu/armv8/fsl-layerscape/Kconfig |  4 ++++
>  arch/arm/cpu/armv8/fsl-layerscape/fdt.c   | 32
> +++++++++++++++++++++++++++++++
>  2 files changed, 36 insertions(+)
> 
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> index 47145a2432..971a98c6cc 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> @@ -176,6 +176,10 @@ config HAS_FEATURE_ENHANCED_MSI
>  	bool
>  	default y if ARCH_LS1043A
> 
> +config DISCARD_OFFLINE_CPU_NODES
> +	bool
> +	default y if ARCH_LS1043A
> +

As per understanding this feature is for taking care of SoC personalities with reduced cores. 

Why a new config is required? Why cannot this be taken care at run time by reading SVR.

-pk

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes
  2017-11-30  4:55   ` Prabhakar Kushwaha
@ 2017-11-30  9:56     ` Wenbin Song
  0 siblings, 0 replies; 6+ messages in thread
From: Wenbin Song @ 2017-11-30  9:56 UTC (permalink / raw)
  To: u-boot

Hi Prabhakar,

In my opinion, this is a common feature for all Layerscapes. As I know, all chips belonged to Layerscape have the capacity to disable some cores, just like ls1043a /ls1023a. 
If we will support another variant in the future, for example: ls1046a/ls1026a, just configure it rather than modify the codes.
Am I correct?

Best Regards
Wenbin Song


-----Original Message-----
From: Prabhakar Kushwaha 
Sent: Thursday, November 30, 2017 12:56 PM
To: Wenbin Song <wenbin.song@nxp.com>; York Sun <york.sun@nxp.com>; Ran Wang <ran.wang_1@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>; u-boot at lists.denx.de
Cc: Wenbin Song <wenbin.song@nxp.com>
Subject: RE: [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes


> -----Original Message-----
> From: Wenbin song [mailto:wenbin.song at nxp.com]
> Sent: Thursday, November 30, 2017 8:27 AM
> To: York Sun <york.sun@nxp.com>; Prabhakar Kushwaha 
> <prabhakar.kushwaha@nxp.com>; Ran Wang <ran.wang_1@nxp.com>; Mingkai 
> Hu <mingkai.hu@nxp.com>; u-boot at lists.denx.de
> Cc: Wenbin Song <wenbin.song@nxp.com>
> Subject: [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes
> 
> Using "cpu_pos_mask()" function to detect the real online cpus, and 
> discard the needless cpu nodes on kernel dft.
> 
> Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
> ---
>  arch/arm/cpu/armv8/fsl-layerscape/Kconfig |  4 ++++
>  arch/arm/cpu/armv8/fsl-layerscape/fdt.c   | 32
> +++++++++++++++++++++++++++++++
>  2 files changed, 36 insertions(+)
> 
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> index 47145a2432..971a98c6cc 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> @@ -176,6 +176,10 @@ config HAS_FEATURE_ENHANCED_MSI
>  	bool
>  	default y if ARCH_LS1043A
> 
> +config DISCARD_OFFLINE_CPU_NODES
> +	bool
> +	default y if ARCH_LS1043A
> +

As per understanding this feature is for taking care of SoC personalities with reduced cores. 

Why a new config is required? Why cannot this be taken care at run time by reading SVR.

-pk

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes
  2017-11-30  2:57 ` [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes Wenbin song
  2017-11-30  4:55   ` Prabhakar Kushwaha
@ 2017-11-30 17:41   ` York Sun
  2017-12-01  6:55     ` Wenbin Song
  1 sibling, 1 reply; 6+ messages in thread
From: York Sun @ 2017-11-30 17:41 UTC (permalink / raw)
  To: u-boot

On 11/29/2017 07:16 PM, Wenbin song wrote:
> Using "cpu_pos_mask()" function to detect the real online cpus,
> and discard the needless cpu nodes on kernel dft.
> 
> Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
> ---
>  arch/arm/cpu/armv8/fsl-layerscape/Kconfig |  4 ++++
>  arch/arm/cpu/armv8/fsl-layerscape/fdt.c   | 32 +++++++++++++++++++++++++++++++
>  2 files changed, 36 insertions(+)
> 
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> index 47145a2432..971a98c6cc 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> @@ -176,6 +176,10 @@ config HAS_FEATURE_ENHANCED_MSI
>  	bool
>  	default y if ARCH_LS1043A
>  
> +config DISCARD_OFFLINE_CPU_NODES
> +	bool
> +	default y if ARCH_LS1043A
> +
>  menu "Layerscape PPA"
>  config FSL_LS_PPA
>  	bool "FSL Layerscape PPA firmware support"
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> index 33f3e64848..241f0abe18 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> @@ -44,6 +44,38 @@ void ft_fixup_cpu(void *blob)
>  	int addr_cells;
>  	u64 val, core_id;
>  	size_t *boot_code_size = &(__secondary_boot_code_size);
> +
> +#if defined(CONFIG_DISCARD_OFFLINE_CPU_NODES)
> +	u32 mask = cpu_pos_mask();
> +	int off_prev = -1;
> +	int pos;
> +
> +	off = fdt_path_offset(blob, "/cpus");
> +	if (off < 0) {
> +		puts("couldn't find /cpus node\n");
> +		return;
> +	}
> +
> +	fdt_support_default_count_cells(blob, off, &addr_cells, NULL);
> +
> +	off = fdt_node_offset_by_prop_value(blob, off_prev, "device_type",
> +					    "cpu", 4);
> +	while (off != -FDT_ERR_NOTFOUND) {
> +		reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0);
> +		if (reg) {
> +			core_id = fdt_read_number(reg, addr_cells);
> +			pos = ((core_id & 0xff00) >> 5) + (core_id & 0xff);
> +			if (!test_bit(pos, &mask)) {
> +				fdt_del_node(blob, off);
> +				off = off_prev;
> +			}
> +		}
> +		off_prev = off;
> +		off = fdt_node_offset_by_prop_value(blob, off_prev,
> +						    "device_type", "cpu", 4);
> +	}
> +#endif
> +
>  #if defined(CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT) && \
>  	defined(CONFIG_SEC_FIRMWARE_ARMV8_PSCI)
>  	int node;
> 

Wenbin,

Using topology registers to identify the existence of cores is correct.
Do you need the new config option to gate the code? It is a correct
operation for all SoCs, isn't it?

York

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes
  2017-11-30 17:41   ` York Sun
@ 2017-12-01  6:55     ` Wenbin Song
  0 siblings, 0 replies; 6+ messages in thread
From: Wenbin Song @ 2017-12-01  6:55 UTC (permalink / raw)
  To: u-boot

Hi York, 
Yes, you are right. 
I have tested it on others SoCs (LS1043a/LS1023a, LS2088a/LS2048a).  It works fine.

So, I will remove the config and the #if condition.

Thank you and Prabhakar for the advice.

Best Regards
Wenbin Song

 

-----Original Message-----
From: York Sun 
Sent: Friday, December 01, 2017 1:41 AM
To: Wenbin Song <wenbin.song@nxp.com>; Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>; Ran Wang <ran.wang_1@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>; u-boot at lists.denx.de
Subject: Re: [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes

On 11/29/2017 07:16 PM, Wenbin song wrote:
> Using "cpu_pos_mask()" function to detect the real online cpus, and 
> discard the needless cpu nodes on kernel dft.
> 
> Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
> ---
>  arch/arm/cpu/armv8/fsl-layerscape/Kconfig |  4 ++++
>  arch/arm/cpu/armv8/fsl-layerscape/fdt.c   | 32 +++++++++++++++++++++++++++++++
>  2 files changed, 36 insertions(+)
> 
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig 
> b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> index 47145a2432..971a98c6cc 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
> @@ -176,6 +176,10 @@ config HAS_FEATURE_ENHANCED_MSI
>  	bool
>  	default y if ARCH_LS1043A
>  
> +config DISCARD_OFFLINE_CPU_NODES
> +	bool
> +	default y if ARCH_LS1043A
> +
>  menu "Layerscape PPA"
>  config FSL_LS_PPA
>  	bool "FSL Layerscape PPA firmware support"
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c 
> b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> index 33f3e64848..241f0abe18 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> @@ -44,6 +44,38 @@ void ft_fixup_cpu(void *blob)
>  	int addr_cells;
>  	u64 val, core_id;
>  	size_t *boot_code_size = &(__secondary_boot_code_size);
> +
> +#if defined(CONFIG_DISCARD_OFFLINE_CPU_NODES)
> +	u32 mask = cpu_pos_mask();
> +	int off_prev = -1;
> +	int pos;
> +
> +	off = fdt_path_offset(blob, "/cpus");
> +	if (off < 0) {
> +		puts("couldn't find /cpus node\n");
> +		return;
> +	}
> +
> +	fdt_support_default_count_cells(blob, off, &addr_cells, NULL);
> +
> +	off = fdt_node_offset_by_prop_value(blob, off_prev, "device_type",
> +					    "cpu", 4);
> +	while (off != -FDT_ERR_NOTFOUND) {
> +		reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0);
> +		if (reg) {
> +			core_id = fdt_read_number(reg, addr_cells);
> +			pos = ((core_id & 0xff00) >> 5) + (core_id & 0xff);
> +			if (!test_bit(pos, &mask)) {
> +				fdt_del_node(blob, off);
> +				off = off_prev;
> +			}
> +		}
> +		off_prev = off;
> +		off = fdt_node_offset_by_prop_value(blob, off_prev,
> +						    "device_type", "cpu", 4);
> +	}
> +#endif
> +
>  #if defined(CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT) && \
>  	defined(CONFIG_SEC_FIRMWARE_ARMV8_PSCI)
>  	int node;
> 

Wenbin,

Using topology registers to identify the existence of cores is correct.
Do you need the new config option to gate the code? It is a correct operation for all SoCs, isn't it?

York

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2017-12-01  6:55 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-11-30  2:57 [U-Boot] [PATCH 1/2] armv8: ls1043a: modify the detecting way to cover all variants Wenbin song
2017-11-30  2:57 ` [U-Boot] [PATCH 2/2] armv8: ls1043a: Discard the needless cpu nodes Wenbin song
2017-11-30  4:55   ` Prabhakar Kushwaha
2017-11-30  9:56     ` Wenbin Song
2017-11-30 17:41   ` York Sun
2017-12-01  6:55     ` Wenbin Song

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