diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2017-09-15 12:33:24 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2017-09-20 23:53:53 +0000 |
| commit | bcd0bdabedb2b99d670afff4ef516535f66c2dbb (patch) | |
| tree | 3998b51e32712cc30784336f4e8f84e4f16a2d8a /src/soc | |
| parent | b9d9b79cedebcbcd46bd457ab2f70239a22ab572 (diff) | |
| download | coreboot-bcd0bdabedb2b99d670afff4ef516535f66c2dbb.tar.xz | |
soc/intel/cannonlake: add rtc failure checking
In order to prepare for checking RTC failure in the early boot
paths move the rtc failure calculation to pmutil.c and add a helper
function to determine if failure occurred. In addition actually
provide soc_get_rtc_failed() which properly indicates to the common
code that RTC failure did occur in the cmos_init() path.
BUG=b:63054105
Change-Id: I9dcb9377c758b226ee7bcc572caf11b7b2095425
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21553
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc')
| -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); +} |