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author | Aaron Durbin <adurbin@chromium.org> | 2017-09-15 14:24:03 -0600 |
---|---|---|
committer | Aaron Durbin <adurbin@chromium.org> | 2017-09-20 23:54:07 +0000 |
commit | 64b4bddcbc2156e9a410f07e14e58cf01d579fdb (patch) | |
tree | a9b5157046c8102a876166739b0ea00d9b8677d9 /src/soc/intel/baytrail/pmutil.c | |
parent | d1fc8c13437da7326aaf189f1acc4fae4f6715b0 (diff) | |
download | coreboot-64b4bddcbc2156e9a410f07e14e58cf01d579fdb.tar.xz |
soc/intel/baytrail: refactor 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.
BUG=b:63054105
Change-Id: I1d90cc557225ddbba1787bf95eae0de623af487e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21555
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
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; +} |