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>

diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
index 4eb3ee7..228c3ca 100644 (file)
--- a/arch/arm/mach-exynos/firmware.c
+++ b/arch/arm/mach-exynos/firmware.c
@@ -19,6 +19,8 @@
 
 #include <mach/map.h>
 
+#include <plat/cpu.h>
+
 #include "common.h"
 #include "smc.h"
 
@@ -44,13 +46,24 @@ static int exynos_do_idle(int mode)
 
 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;