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ARM: EXYNOS: fix the secondary CPU boot of exynos4212

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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>
This commit is contained in:
Kyungmin Park 2014-05-09 06:19:18 +09:00 • committed by Kukjin Kim
parent 89ca3b8819
commit 989ff3fdf9
1 changed files with 14 additions and 1 deletions
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15
arch/arm/mach-exynos/firmware.c
View file

@ -18,6 +18,8 @@
#include <mach/map.h> #include <mach/map.h>
#include <plat/cpu.h>
#include "smc.h" #include "smc.h"
static int exynos_do_idle(void) static int exynos_do_idle(void)
@ -28,13 +30,24 @@ static int exynos_do_idle(void)
static int exynos_cpu_boot(int cpu) 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); exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0);
return 0; return 0;
} }
static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) 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); __raw_writel(boot_addr, boot_reg);
return 0; return 0;