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.choi@xxxxxxxxxxx> Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> --- 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 0xC200ffff +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 0x02020000 #define EXYNOS5_PA_SYSRAM 0x02020000 +#define EXYNOS3_PA_SYSRAM_NS 0x0205F000 #define EXYNOS4210_PA_SYSRAM_NS 0x0203F000 #define EXYNOS4x12_PA_SYSRAM_NS 0x0204F000 #define EXYNOS5250_PA_SYSRAM_NS 0x0204F000 -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
