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-rw-r--r--arch/arm/mach-tegra/pmc.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/pmc.c b/arch/arm/mach-tegra/pmc.c
index fb7920201ab4..7c7123e7557b 100644
--- a/arch/arm/mach-tegra/pmc.c
+++ b/arch/arm/mach-tegra/pmc.c
@@ -41,6 +41,14 @@
#define PMC_REMOVE_CLAMPING 0x34
#define PMC_PWRGATE_STATUS 0x38
+#define PMC_SCRATCH0 0x50
+#define PMC_SCRATCH0_MODE_RECOVERY (1 << 31)
+#define PMC_SCRATCH0_MODE_BOOTLOADER (1 << 30)
+#define PMC_SCRATCH0_MODE_RCM (1 << 1)
+#define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
+ PMC_SCRATCH0_MODE_BOOTLOADER | \
+ PMC_SCRATCH0_MODE_RCM)
+
#define PMC_CPUPWRGOOD_TIMER 0xc8
#define PMC_CPUPWROFF_TIMER 0xcc
@@ -165,6 +173,22 @@ void tegra_pmc_restart(enum reboot_mode mode, const char *cmd)
{
u32 val;
+ val = tegra_pmc_readl(PMC_SCRATCH0);
+ val &= ~PMC_SCRATCH0_MODE_MASK;
+
+ if (cmd) {
+ if (strcmp(cmd, "recovery") == 0)
+ val |= PMC_SCRATCH0_MODE_RECOVERY;
+
+ if (strcmp(cmd, "bootloader") == 0)
+ val |= PMC_SCRATCH0_MODE_BOOTLOADER;
+
+ if (strcmp(cmd, "forced-recovery") == 0)
+ val |= PMC_SCRATCH0_MODE_RCM;
+ }
+
+ tegra_pmc_writel(val, PMC_SCRATCH0);
+
val = tegra_pmc_readl(0);
val |= 0x10;
tegra_pmc_writel(val, 0);