diff options
| -rw-r--r-- | src/soc/intel/cannonlake/pmutil.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/pmutil.c b/src/soc/intel/cannonlake/pmutil.c index 6708781fa5..ebd3d61cc8 100644 --- a/src/soc/intel/cannonlake/pmutil.c +++ b/src/soc/intel/cannonlake/pmutil.c @@ -22,11 +22,13 @@ #define __SIMPLE_DEVICE__ #include <arch/io.h> +#include <cbmem.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_def.h> #include <console/console.h> #include <intelblocks/pmclib.h> +#include <intelblocks/rtc.h> #include <halt.h> #include <rules.h> #include <stdlib.h> @@ -188,3 +190,20 @@ void soc_get_gpe_configs(uint8_t *dw0, uint8_t *dw1, uint8_t *dw2) *dw1 = config->gpe0_dw1; *dw2 = config->gpe0_dw2; } + +static int rtc_failed(uint32_t gen_pmcon_b) +{ + return !!(gen_pmcon_b & RTC_BATTERY_DEAD); +} + +int soc_get_rtc_failed(void) +{ + const struct chipset_power_state *ps = cbmem_find(CBMEM_ID_POWER_STATE); + + if (!ps) { + printk(BIOS_ERR, "Could not find power state in cbmem, RTC init aborted\n"); + return 1; + } + + return rtc_failed(ps->gen_pmcon_b); +} |