imx: imx8: print reset cause

Add support for printing reset cause during boot.

Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>

diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c
index 39ac0bc..0b91e44 100644 (file)
--- a/arch/arm/mach-imx/imx8/cpu.c
+++ b/arch/arm/mach-imx/imx8/cpu.c
@@ -45,6 +45,45 @@ struct pass_over_info_t *get_pass_over_info(void)
        return p;
 }
 
+static char *get_reset_cause(void)
+{
+       sc_pm_reset_reason_t reason;
+
+       if (sc_pm_reset_reason(-1, &reason) != SC_ERR_NONE)
+               return "Unknown reset";
+
+       switch (reason) {
+       case SC_PM_RESET_REASON_POR:
+               return "POR";
+       case SC_PM_RESET_REASON_JTAG:
+               return "JTAG reset ";
+       case SC_PM_RESET_REASON_SW:
+               return "Software reset";
+       case SC_PM_RESET_REASON_WDOG:
+               return "Watchdog reset";
+       case SC_PM_RESET_REASON_LOCKUP:
+               return "SCU lockup reset";
+       case SC_PM_RESET_REASON_SNVS:
+               return "SNVS reset";
+       case SC_PM_RESET_REASON_TEMP:
+               return "Temp panic reset";
+       case SC_PM_RESET_REASON_MSI:
+               return "MSI reset";
+       case SC_PM_RESET_REASON_UECC:
+               return "ECC reset";
+       case SC_PM_RESET_REASON_SCFW_WDOG:
+               return "SCFW watchdog reset";
+       case SC_PM_RESET_REASON_ROM_WDOG:
+               return "SCU ROM watchdog reset";
+       case SC_PM_RESET_REASON_SECO:
+               return "SECO reset";
+       case SC_PM_RESET_REASON_SCFW_FAULT:
+               return "SCFW fault reset";
+       default:
+               return "Unknown reset";
+       }
+}
+
 int arch_cpu_init(void)
 {
 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_RECOVER_DATA_SECTION)
@@ -322,6 +361,8 @@ int print_bootinfo(void)
                break;
        }
 
+       printf("Reset cause: %s\n", get_reset_cause());
+
        return 0;
 }