diff options
author | Jingle Hsu <jingle_hsu@wiwynn.com> | 2020-07-01 18:26:49 +0800 |
---|---|---|
committer | Patrick Georgi <pgeorgi@google.com> | 2020-07-12 19:36:42 +0000 |
commit | e07ea4cd38c5c232515a8755d2b4fbff6f12b949 (patch) | |
tree | 9cda898ea1131ddb757366fd65d8c75904e505d3 /src/soc/intel/xeon_sp/pmutil.c | |
parent | 145a76182c58e2b83b2081d2545b5fa190e6930c (diff) |
soc/intel/xeon_sp: Add RTC failure checking
Add a weak function mainboard_rtc_failed() for mainboard customization.
Check RTC_PWR_STS bit for RTC battery removal or CMOS clear jumper
triggered event.
Signed-off-by: Jingle Hsu <jingle_hsu@wiwynn.com>
Change-Id: Ic6da84277e71a5c51dfa4d97d5d0c0184478e8f0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43004
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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; +} |