diff options
Diffstat (limited to 'src/soc/intel/baytrail/pmutil.c')
| -rw-r--r-- | src/soc/intel/baytrail/pmutil.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/src/soc/intel/baytrail/pmutil.c b/src/soc/intel/baytrail/pmutil.c index 3759174346..ab2a4ba6d4 100644 --- a/src/soc/intel/baytrail/pmutil.c +++ b/src/soc/intel/baytrail/pmutil.c @@ -15,6 +15,7 @@ #include <stdint.h> #include <arch/io.h> +#include <cbmem.h> #include <console/console.h> #include <soc/iomap.h> @@ -22,7 +23,7 @@ #include <soc/pci_devs.h> #include <soc/pmc.h> -#if defined(__SMM__) +#if defined(__SIMPLE_DEVICE__) static const device_t pcu_dev = PCI_DEV(0, PCU_DEV, 0); @@ -358,3 +359,22 @@ void clear_pmc_status(void) write32((u32 *)(PMC_BASE_ADDRESS + GEN_PMCON1), gen_pmcon1 & ~RPS); write32((u32 *)(PMC_BASE_ADDRESS + PRSTS), prsts); } + +int rtc_failure(void) +{ + uint32_t gen_pmcon1; + int rtc_fail; + struct chipset_power_state *ps = cbmem_find(CBMEM_ID_POWER_STATE); + + if (ps != NULL) + gen_pmcon1 = ps->gen_pmcon1; + else + gen_pmcon1 = read32((u32 *)(PMC_BASE_ADDRESS + GEN_PMCON1)); + + rtc_fail = !!(gen_pmcon1 & RPS); + + if (rtc_fail) + printk(BIOS_DEBUG, "RTC failure.\n"); + + return rtc_fail; +} |