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mc146818rtc: Update the Day of Week in CMOS in the right way.

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The range of weekday in CMOS is 01-07, while the Sunday is 1, and
Saturday is 7. The comand date in coreutils defines
  %u   day of week (1..7); 1 is Monday
  %w   day of week (0..6); 0 is Sunday
There are 1 day offset for each week day. So we use "%w" and plus 1
before we update the weekday in CMOS.

Change-Id: I3fab4e95f04924ff0ba10a7012b57da1d3f0d1a5
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1802
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
This commit is contained in:
Zheng Bao 2012-11-09 18:15:54 +08:00 • committed by Anton Kochkov
commit 094920ddd3
2 changed files with 2 additions and 2 deletions
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2
src/drivers/pc80/mc146818rtc.c
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@ -87,7 +87,7 @@ static void rtc_update_cmos_date(u8 has_century)
cmos_write(0, RTC_CLK_SECOND);
cmos_write(0, RTC_CLK_MINUTE);
cmos_write(1, RTC_CLK_HOUR);
cmos_write(RTC_TO_BCD(COREBOOT_BUILD_WEEKDAY), RTC_CLK_DAYOFWEEK);
cmos_write(RTC_TO_BCD(COREBOOT_BUILD_WEEKDAY) + 1, RTC_CLK_DAYOFWEEK);
cmos_write(RTC_TO_BCD(COREBOOT_BUILD_DAY), RTC_CLK_DAYOFMONTH);
cmos_write(RTC_TO_BCD(COREBOOT_BUILD_MONTH), RTC_CLK_MINUTE);
cmos_write(RTC_TO_BCD(COREBOOT_BUILD_YEAR), RTC_CLK_YEAR);