Add reset cause for rk3399 in common cpu-info file.
This would help to print the reset cause for various resets.
Common code for various rockchip reset cause will add it in future.
Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- arch/arm/include/asm/arch-rockchip/cru.h | 12 +++++++ arch/arm/mach-rockchip/cpu-info.c | 43 ++++++++++++++++++++++++ 2 files changed, 55 insertions(+)
diff --git a/arch/arm/include/asm/arch-rockchip/cru.h b/arch/arm/include/asm/arch-rockchip/cru.h index 3d1927580f..e267a71ca6 100644 --- a/arch/arm/include/asm/arch-rockchip/cru.h +++ b/arch/arm/include/asm/arch-rockchip/cru.h @@ -11,4 +11,16 @@ # include <asm/arch-rockchip/cru_rk3399.h> #endif
+/* CRU_GLB_RST_ST */ +enum { + GLB_POR_RST, + FST_GLB_RST_ST = BIT(0), + SND_GLB_RST_ST = BIT(1), + FST_GLB_TSADC_RST_ST = BIT(2), + SND_GLB_TSADC_RST_ST = BIT(3), + FST_GLB_WDT_RST_ST = BIT(4), + SND_GLB_WDT_RST_ST = BIT(5), + GLB_RST_ST_MASK = GENMASK(5, 0), +}; + #endif /* _ROCKCHIP_CLOCK_H */ diff --git a/arch/arm/mach-rockchip/cpu-info.c b/arch/arm/mach-rockchip/cpu-info.c index 90ce65d9ff..63d867fe78 100644 --- a/arch/arm/mach-rockchip/cpu-info.c +++ b/arch/arm/mach-rockchip/cpu-info.c @@ -5,10 +5,53 @@ */
#include <common.h> +#include <asm/io.h> +#include <asm/arch-rockchip/clock.h> +#include <asm/arch-rockchip/cru.h> +#include <asm/arch-rockchip/hardware.h> +#include <linux/err.h> + +static char *get_reset_cause(void) +{ + struct rockchip_cru *cru = rockchip_get_cru(); + char *cause = NULL; + + if (IS_ERR(cru)) + return cause; + + switch (cru->glb_rst_st) { + case GLB_POR_RST: + cause = "POR"; + break; + case FST_GLB_RST_ST: + case SND_GLB_RST_ST: + cause = "RST"; + break; + case FST_GLB_TSADC_RST_ST: + case SND_GLB_TSADC_RST_ST: + cause = "THERMAL"; + break; + case FST_GLB_WDT_RST_ST: + case SND_GLB_WDT_RST_ST: + cause = "WDOG"; + break; + default: + cause = "unknown reset"; + } + + /* + * Clear glb_rst_st, so we can determine the last reset cause + * for following resets. + */ + rk_clrreg(&cru->glb_rst_st, GLB_RST_ST_MASK); + + return cause; +}
int print_cpuinfo(void) { printf("SoC: Rockchip %s\n", CONFIG_SYS_SOC); + printf("Reset cause: %s\n", get_reset_cause());
/* TODO print operating temparature and clock */