diff options
Diffstat (limited to 'src/drivers/pc80/rtc/mc146818rtc.c')
| -rw-r--r-- | src/drivers/pc80/rtc/mc146818rtc.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/drivers/pc80/rtc/mc146818rtc.c b/src/drivers/pc80/rtc/mc146818rtc.c index c3026a4dbc..adbc611e14 100644 --- a/src/drivers/pc80/rtc/mc146818rtc.c +++ b/src/drivers/pc80/rtc/mc146818rtc.c @@ -95,7 +95,7 @@ static void cmos_set_checksum(int range_start, int range_end, int cks_loc) #ifndef __SMM__ void cmos_init(bool invalid) { - bool cmos_invalid = invalid; + bool cmos_invalid; bool checksum_invalid = false; bool clear_cmos; size_t i; @@ -114,11 +114,11 @@ void cmos_init(bool invalid) printk(BIOS_DEBUG, "RTC Init\n"); - if (IS_ENABLED(CONFIG_USE_OPTION_TABLE)) { - /* See if there has been a CMOS power problem. */ - x = cmos_read(RTC_VALID); - cmos_invalid = !(x & RTC_VRT); + /* See if there has been a CMOS power problem. */ + x = cmos_read(RTC_VALID); + cmos_invalid = !(x & RTC_VRT); + if (IS_ENABLED(CONFIG_USE_OPTION_TABLE)) { /* See if there is a CMOS checksum error */ checksum_invalid = !cmos_checksum_valid(PC_CKS_RANGE_START, PC_CKS_RANGE_END, PC_CKS_LOC); @@ -128,6 +128,9 @@ void cmos_init(bool invalid) clear_cmos = true; } + if (cmos_invalid || invalid) + cmos_write(cmos_read(RTC_CONTROL) | RTC_SET, RTC_CONTROL); + if (invalid || cmos_invalid || checksum_invalid) { if (clear_cmos) { cmos_write(0, 0x01); |