ARM: EXYNOS: add exynos_get_boot_addr() helper

[deliverable/linux.git] / arch / arm / mach-exynos / firmware.c

diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
index 1bd35763f12ec04d712ace47f0f88bd2f9c95c89..b30562daf6961575d7f017e0cd586999e5b32156 100644 (file)
--- a/arch/arm/mach-exynos/firmware.c
+++ b/arch/arm/mach-exynos/firmware.c
@@ -104,6 +104,22 @@ static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr)
        return 0;
 }
 
+static int exynos_get_cpu_boot_addr(int cpu, unsigned long *boot_addr)
+{
+       void __iomem *boot_reg;
+
+       if (!sysram_ns_base_addr)
+               return -ENODEV;
+
+       boot_reg = sysram_ns_base_addr + 0x1c;
+
+       if (soc_is_exynos4412())
+               boot_reg += 4 * cpu;
+
+       *boot_addr = __raw_readl(boot_reg);
+       return 0;
+}
+
 static int exynos_cpu_suspend(unsigned long arg)
 {
        flush_cache_all();
@@ -138,6 +154,7 @@ static int exynos_resume(void)
 static const struct firmware_ops exynos_firmware_ops = {
        .do_idle                = IS_ENABLED(CONFIG_EXYNOS_CPU_SUSPEND) ? exynos_do_idle : NULL,
        .set_cpu_boot_addr      = exynos_set_cpu_boot_addr,
+       .get_cpu_boot_addr      = exynos_get_cpu_boot_addr,
        .cpu_boot               = exynos_cpu_boot,
        .suspend                = IS_ENABLED(CONFIG_PM_SLEEP) ? exynos_suspend : NULL,
        .resume                 = IS_ENABLED(CONFIG_EXYNOS_CPU_SUSPEND) ? exynos_resume : NULL,