diff options
Diffstat (limited to 'src/soc/intel/common/block/rtc/rtc.c')
| -rw-r--r-- | src/soc/intel/common/block/rtc/rtc.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/rtc/rtc.c b/src/soc/intel/common/block/rtc/rtc.c index cb97953557..b8c8849d10 100644 --- a/src/soc/intel/common/block/rtc/rtc.c +++ b/src/soc/intel/common/block/rtc/rtc.c @@ -25,6 +25,9 @@ #define PCR_RTC_CONF_LCMOS_LOCK (1 << 3) #define PCR_RTC_CONF_UCMOS_LOCK (1 << 4) #define PCR_RTC_CONF_RESERVED (1 << 31) +/* RTC backed up control register */ +#define PCR_RTC_BUC 0x3414 +#define PCR_RTC_BUC_TOP_SWAP (1 << 0) void enable_rtc_upper_bank(void) { @@ -44,3 +47,18 @@ void rtc_init(void) cmos_init(soc_get_rtc_failed()); } + +#if IS_ENABLED(CONFIG_INTEL_HAS_TOP_SWAP) +void configure_rtc_buc_top_swap(enum ts_config ts_state) +{ + pcr_rmw32(PID_RTC, PCR_RTC_BUC, ~PCR_RTC_BUC_TOP_SWAP, ts_state); +} + +enum ts_config get_rtc_buc_top_swap_status(void) +{ + if (pcr_read32(PID_RTC, PCR_RTC_BUC) & PCR_RTC_BUC_TOP_SWAP) + return TS_ENABLE; + else + return TS_DISABLE; +} +#endif |