Commit Graph

3 Commits

Author SHA1 Message Date
Vincent Palatin
fc1b9ee4aa rtc: force mc146818 register D to a correct value
On Panther Point PCH (and maybe cougar point), when some of the register
D reserved bits are set, the RTC starts misbehaving (e.g. incrementing
the year byte every second).
There are probably undocumented features implemented behind those bits.
Let's reset register D to a known state to ensure we get the expected
RTC behavior.

Change-Id: I7e2c2a2c6130a974bccb3d760b41eaa579a58b67
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-on: http://review.coreboot.org/1695
Reviewed-by: Marc Jones <marcj303@gmail.com>
Tested-by: build bot (Jenkins)
2012-11-07 03:57:47 +01:00
zbao
a1e6a9c25a RTC: Add a routine to check if the CMOS date is valid
If the CMOS is cleared or someone writes some random date/time
on purpose, the CMOS date register has a invalid date. This will
hurts some OS, like Windows 7, which hangs at MS logo forever.
When we detect that, we need to write a reasonable date in CMOS.

Alexandru Gagniuc:
Hmm, it would be interesting to use the date the coreboot image
was built and set that as the default date. At least until time
travel is invented.

Change-Id: Ic1c7a2d60e711265686441c77bdf7891a7efb42e
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1389
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-08-02 23:40:09 +02:00
Stefan Reinauer
ae5e11d7cd Move top level pc80 directory to drivers/
There is no reason for this to be a top level directory.
Some stuff from lib/ should also be moved to drivers/

Change-Id: I3c2d2e127f7215eadead029cfc7442c22b26814a
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/939
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-04-27 19:23:16 +02:00