soc:exynos-reboot:Add the last powerup reason back

Last power up reason code was missed
Add them back to handle the panic correctly

Change-Id: I18de2937c1c3a15e055c48b9dc148eb99adbd3ea
Signed-off-by: a17671 <a17671@motorola.com>
Reviewed-on: https://gerrit.mot.com/1272078
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key

diff --git a/drivers/soc/samsung/exynos-reboot.c b/drivers/soc/samsung/exynos-reboot.c
index a24c61f455ab2e3d0cc21f720798b016e0637916..89c397322eebcd759da01ac50c293210f2076f20 100644 (file)
--- a/drivers/soc/samsung/exynos-reboot.c
+++ b/drivers/soc/samsung/exynos-reboot.c
@@ -117,7 +117,10 @@ int soc_has_big(void)
                                        | RESET_DISABLE_WDT_PRESET_DBG  \
                                        | RESET_DISABLE_PRESET_DBG      \
                                        | RESET_DISABLE_L2RESET)
-
+#define LAST_POWERUP_REASON_REG                        (0x0854)  /*EXYNOS9610_POWER_INFORM9*/
+#define RESET_EXTRA_POST_PANIC_REASON  (BIT(4) | BIT(5))
+#define RESET_EXTRA_POST_PMICWDT_REASON        BIT(5)
+#define RESET_EXTRA_POST_WDT_REASON    BIT(4)
 static int in_panic = 0;
 static int panic_prep_restart(struct notifier_block *this,
                              unsigned long event, void *ptr)
@@ -290,6 +293,8 @@ static void exynos_reboot(enum reboot_mode mode, const char *cmd)
        u32 soc_id, revision;
        void __iomem *addr;
        void __iomem *restart_reason;
+       void __iomem *addr_extra;
+
        if (!exynos_pmu_base)
                return;
 #ifdef CONFIG_EXYNOS_ACPM
@@ -299,6 +304,9 @@ static void exynos_reboot(enum reboot_mode mode, const char *cmd)
 
        addr = exynos_pmu_base + EXYNOS_PMU_SYSIP_DAT0;
        restart_reason = exynos_pmu_base + EXYNOS_PMU_SYSIP_DAT3;
+       addr_extra = exynos_pmu_base + LAST_POWERUP_REASON_REG;
+       /*Clear the last power up reason first*/
+       __raw_writel(0, addr_extra);
 
        if (cmd) {
                if (!strcmp((char *)cmd, "charge")) {
@@ -345,10 +353,13 @@ static void exynos_reboot(enum reboot_mode mode, const char *cmd)
                        }
                } else if (!strncmp(cmd, "post-wdt", 8)) {
                        __raw_writel(0x77665508, restart_reason);
+                       __raw_writel(RESET_EXTRA_POST_WDT_REASON, addr_extra);
                } else if (!strncmp(cmd, "post-pmicwdt", 12)) {
                        __raw_writel(0x77665507, restart_reason);
+                       __raw_writel(RESET_EXTRA_POST_PMICWDT_REASON, addr_extra);
                } else if (!strncmp(cmd, "post-panic", 10)) {
                        __raw_writel(0x77665506, restart_reason);
+                       __raw_writel(RESET_EXTRA_POST_PANIC_REASON, addr_extra);
                } else if (!strncmp(cmd, "panic", 5)) {
                        __raw_writel(0x77665505, restart_reason);
                } else {