diff options
Diffstat (limited to 'src/soc/intel/xeon_sp/pmutil.c')
-rw-r--r-- | src/soc/intel/xeon_sp/pmutil.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/soc/intel/xeon_sp/pmutil.c b/src/soc/intel/xeon_sp/pmutil.c new file mode 100644 index 0000000000..9ab63a4f0b --- /dev/null +++ b/src/soc/intel/xeon_sp/pmutil.c @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * Helper functions for dealing with power management registers + * and the differences between PCH variants. + */ + +#include <intelblocks/rtc.h> +#include <soc/pmc.h> +#include <soc/pci_devs.h> +#include <device/pci.h> +#include <console/console.h> + +int soc_get_rtc_failed(void) +{ + uint32_t pmcon_b = pci_s_read_config32(PCH_DEV_PMC, GEN_PMCON_B); + int rtc_fail = !!(pmcon_b & RTC_BATTERY_DEAD); + + if (rtc_fail) + printk(BIOS_ERR, "%s: RTC battery dead or removed\n", __func__); + + return rtc_fail; +} |