[PATCHv2 2/8] ARM: EXYNOS: Add IO mapping for non-secure SYSRAM of Exynos3250
The non-secure SYSRAM is used for secondary CPU bring-up. This patch add
IO mapping for non-scure SYSRAM.
Signed-off-by: Chanwoo Choi
Acked-by: Kyungmin Park
---
Arnd Bergmann suggested that need proper driver instead of static memory
mapping.
As Chanho Park reply[2], Sachin Kamat already posted the DT support patch[1]
for memory mapping for SYSRAM.
[1] http://www.spinics.net/lists/linux-samsung-soc/msg27647.html
[2] https://lkml.org/lkml/2014/4/10/161
So, I'm going to re-implement following patch related to static memory mapping
after merged Sachin Kamat patch[1].
ARM: EXYNOS: Add IO mapping for non-secure SYSRAM of Exynos3250
arch/arm/mach-exynos/exynos.c | 12
arch/arm/mach-exynos/include/mach/map.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index a603dfa..c7c9472 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -35,6 +35,15 @@
#define L2_AUX_VAL 0x7C470001
#define L2_AUX_MASK 0xC200
+static struct map_desc exynos3250_iodesc[] __initdata = {
+ {
+ .virtual= (unsigned long)S5P_VA_SYSRAM_NS,
+ .pfn= __phys_to_pfn(EXYNOS3_PA_SYSRAM_NS),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+};
+
static struct map_desc exynos4_iodesc[] __initdata = {
{
.virtual= (unsigned long)S3C_VA_SYS,
@@ -275,6 +284,9 @@ static int __init exynos_fdt_map_chipid(unsigned long node,
const char *uname,
*/
static void __init exynos_map_io(void)
{
+ if (soc_is_exynos3250())
+ iotable_init(exynos3250_iodesc, ARRAY_SIZE(exynos3250_iodesc));
+
if (soc_is_exynos4())
iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
diff --git a/arch/arm/mach-exynos/include/mach/map.h
b/arch/arm/mach-exynos/include/mach/map.h
index 7b046b5..a53981b 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -26,6 +26,7 @@
#define EXYNOS4_PA_SYSRAM0 0x02025000
#define EXYNOS4_PA_SYSRAM1 0x0202
#define EXYNOS5_PA_SYSRAM 0x0202
+#define EXYNOS3_PA_SYSRAM_NS 0x0205F000
#define EXYNOS4210_PA_SYSRAM_NS0x0203F000
#define EXYNOS4x12_PA_SYSRAM_NS0x0204F000
#define EXYNOS5250_PA_SYSRAM_NS0x0204F000
--
1.8.0
--
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[PATCHv2 2/8] ARM: EXYNOS: Add IO mapping for non-secure SYSRAM of Exynos3250
The non-secure SYSRAM is used for secondary CPU bring-up. This patch add
IO mapping for non-scure SYSRAM.
Signed-off-by: Chanwoo Choi cw00.c...@samsung.com
Acked-by: Kyungmin Park kyungmin.p...@samsung.com
---
Arnd Bergmann suggested that need proper driver instead of static memory
mapping.
As Chanho Park reply[2], Sachin Kamat already posted the DT support patch[1]
for memory mapping for SYSRAM.
[1] http://www.spinics.net/lists/linux-samsung-soc/msg27647.html
[2] https://lkml.org/lkml/2014/4/10/161
So, I'm going to re-implement following patch related to static memory mapping
after merged Sachin Kamat patch[1].
ARM: EXYNOS: Add IO mapping for non-secure SYSRAM of Exynos3250
arch/arm/mach-exynos/exynos.c | 12
arch/arm/mach-exynos/include/mach/map.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index a603dfa..c7c9472 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -35,6 +35,15 @@
#define L2_AUX_VAL 0x7C470001
#define L2_AUX_MASK 0xC200
+static struct map_desc exynos3250_iodesc[] __initdata = {
+ {
+ .virtual= (unsigned long)S5P_VA_SYSRAM_NS,
+ .pfn= __phys_to_pfn(EXYNOS3_PA_SYSRAM_NS),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+};
+
static struct map_desc exynos4_iodesc[] __initdata = {
{
.virtual= (unsigned long)S3C_VA_SYS,
@@ -275,6 +284,9 @@ static int __init exynos_fdt_map_chipid(unsigned long node,
const char *uname,
*/
static void __init exynos_map_io(void)
{
+ if (soc_is_exynos3250())
+ iotable_init(exynos3250_iodesc, ARRAY_SIZE(exynos3250_iodesc));
+
if (soc_is_exynos4())
iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
diff --git a/arch/arm/mach-exynos/include/mach/map.h
b/arch/arm/mach-exynos/include/mach/map.h
index 7b046b5..a53981b 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -26,6 +26,7 @@
#define EXYNOS4_PA_SYSRAM0 0x02025000
#define EXYNOS4_PA_SYSRAM1 0x0202
#define EXYNOS5_PA_SYSRAM 0x0202
+#define EXYNOS3_PA_SYSRAM_NS 0x0205F000
#define EXYNOS4210_PA_SYSRAM_NS0x0203F000
#define EXYNOS4x12_PA_SYSRAM_NS0x0204F000
#define EXYNOS5250_PA_SYSRAM_NS0x0204F000
--
1.8.0
--
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