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| author | Kyungmin Park <kyungmin.park@samsung.com> | 2014-05-08 23:19:18 +0200 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2014-05-14 21:12:45 +0200 |
| commit | 989ff3fdf939b15f0cb91406746da0ded0c06ef0 (patch) | |
| tree | 2220b575439ac05efc9e3a566b31a51f6650564c /arch/arm/mach-exynos/firmware.c | |
| parent | Linux 3.15-rc4 (diff) | |
| download | linux-989ff3fdf939b15f0cb91406746da0ded0c06ef0.tar.xz linux-989ff3fdf939b15f0cb91406746da0ded0c06ef0.zip | |
ARM: EXYNOS: fix the secondary CPU boot of exynos4212
This patch fixes the offset of CPU boot address and changes
the parameter of smc call for SMC_CMD_CPU1BOOT command on
exynos4212.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos/firmware.c')
| -rw-r--r-- | arch/arm/mach-exynos/firmware.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index 932129ef26c6..aa01c4222b40 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -18,6 +18,8 @@ #include <mach/map.h> +#include <plat/cpu.h> + #include "smc.h" static int exynos_do_idle(void) @@ -28,13 +30,24 @@ static int exynos_do_idle(void) static int exynos_cpu_boot(int cpu) { + /* + * The second parameter of SMC_CMD_CPU1BOOT command means CPU id. + * But, Exynos4212 has only one secondary CPU so second parameter + * isn't used for informing secure firmware about CPU id. + */ + if (soc_is_exynos4212()) + cpu = 0; + exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0); return 0; } static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) { - void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c + 4*cpu; + void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c; + + if (!soc_is_exynos4212()) + boot_reg += 4*cpu; __raw_writel(boot_addr, boot_reg); return 0; |