diff options
Diffstat (limited to 'arch/arm/mach-rockchip/cpu-info.c')
| -rw-r--r-- | arch/arm/mach-rockchip/cpu-info.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/cpu-info.c b/arch/arm/mach-rockchip/cpu-info.c index 9bccbd4..4b0e992 100644 --- a/arch/arm/mach-rockchip/cpu-info.c +++ b/arch/arm/mach-rockchip/cpu-info.c @@ -5,10 +5,59 @@ */ #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"; + } + + /** + * reset_reason env is used by rk3288, due to special use case + * to figure it the boot behavior. so keep this as it is. + */ + env_set("reset_reason", cause); + + /* + * 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 */ |