diff options
Diffstat (limited to 'src/drivers/pc80/mc146818rtc.c')
| -rw-r--r-- | src/drivers/pc80/mc146818rtc.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/src/drivers/pc80/mc146818rtc.c b/src/drivers/pc80/mc146818rtc.c index efeb378d31..d832544b17 100644 --- a/src/drivers/pc80/mc146818rtc.c +++ b/src/drivers/pc80/mc146818rtc.c @@ -1,4 +1,5 @@ #include <stdint.h> +#include <build.h> #include <console/console.h> #include <pc80/mc146818rtc.h> #include <boot/coreboot_tables.h> @@ -79,15 +80,14 @@ static void rtc_update_cmos_date(u8 has_century) { - /* Now setup a default date of Sat 1 January 2000 */ - /* TODO: Set the time as building time? Is it reasonable? */ + /* Now setup a default date equals to the build date */ cmos_write(0, RTC_CLK_SECOND); cmos_write(0, RTC_CLK_MINUTE); cmos_write(1, RTC_CLK_HOUR); - cmos_write(7, RTC_CLK_DAYOFWEEK); - cmos_write(1, RTC_CLK_DAYOFMONTH); - cmos_write(1, RTC_CLK_MINUTE); - cmos_write(0, RTC_CLK_YEAR); + cmos_write(COREBOOT_BUILD_WEEKDAY, RTC_CLK_DAYOFWEEK); + cmos_write(COREBOOT_BUILD_DAY, RTC_CLK_DAYOFMONTH); + cmos_write(COREBOOT_BUILD_MONTH, RTC_CLK_MINUTE); + cmos_write(COREBOOT_BUILD_YEAR, RTC_CLK_YEAR); if (has_century) cmos_write(0x20, RTC_CLK_ALTCENTURY); } @@ -129,9 +129,10 @@ static void rtc_set_checksum(int range_start, int range_end, int cks_loc) void rtc_init(int invalid) { + int cmos_invalid = 0; + int checksum_invalid = 0; #if CONFIG_USE_OPTION_TABLE unsigned char x; - int cmos_invalid, checksum_invalid; #endif printk(BIOS_DEBUG, "RTC Init\n"); @@ -146,17 +147,18 @@ void rtc_init(int invalid) PC_CKS_RANGE_END,PC_CKS_LOC); #define CLEAR_CMOS 0 +#else +#define CLEAR_CMOS 1 +#endif + if (invalid || cmos_invalid || checksum_invalid) { - printk(BIOS_WARNING, "RTC:%s%s%s%s\n", - invalid?" Clear requested":"", - cmos_invalid?" Power Problem":"", - checksum_invalid?" Checksum invalid":"", - CLEAR_CMOS?" zeroing cmos":""); #if CLEAR_CMOS + int i; + cmos_write(0, 0x01); cmos_write(0, 0x03); cmos_write(0, 0x05); - for(i = 10; i < 48; i++) { + for(i = 10; i < 128; i++) { cmos_write(0, i); } @@ -164,8 +166,12 @@ void rtc_init(int invalid) rtc_update_cmos_date(RTC_HAS_NO_ALTCENTURY); } #endif + printk(BIOS_WARNING, "RTC:%s%s%s%s\n", + invalid?" Clear requested":"", + cmos_invalid?" Power Problem":"", + checksum_invalid?" Checksum invalid":"", + CLEAR_CMOS?" zeroing cmos":""); } -#endif /* Setup the real time clock */ cmos_write(RTC_CONTROL_DEFAULT, RTC_CONTROL); |