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| author | Alexander Couzens <lynxis@fe80.eu> | 2015-10-10 16:04:59 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-01-14 17:58:29 +0100 |
| commit | f8970f53eff5114f819df84196efa4e4539cbba1 (patch) | |
| tree | f8f0388d9417a8ccded471a68b8219e97ec2d74d /src/mainboard/lenovo/x220 | |
| parent | 485225e0a382fe398a5e8283a00fc99670306b1e (diff) | |
| download | coreboot-f8970f53eff5114f819df84196efa4e4539cbba1.tar.xz | |
mainboard/lenovo: reserve century byte
The century byte is used by most RTC (default 0x32@nvram).
Even the century byte can disabled via ACPI it's more safe to reserve
it's space. Because some RTC will act with that byte anyhow.
Some OS overwrite it when syncronize the RTC.
Change-Id: I078c0c57215ccb925afa85b9d067f15268801ec9
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Reviewed-on: https://review.coreboot.org/11853
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/mainboard/lenovo/x220')
| -rw-r--r-- | src/mainboard/lenovo/x220/cmos.layout | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mainboard/lenovo/x220/cmos.layout b/src/mainboard/lenovo/x220/cmos.layout index 8f147cc7e8..ca2c45c933 100644 --- a/src/mainboard/lenovo/x220/cmos.layout +++ b/src/mainboard/lenovo/x220/cmos.layout @@ -52,7 +52,7 @@ entries 395 4 e 6 debug_level #399 1 r 0 unused -400 8 h 0 volume +#400 8 r 0 reserved for century byte # coreboot config options: southbridge 408 1 e 1 nmi @@ -78,6 +78,7 @@ entries # coreboot config options: northbridge 432 3 e 11 gfx_uma_size #435 549 r 0 unused +440 8 h 0 volume # SandyBridge MRC Scrambler Seed values 896 32 r 0 mrc_scrambler_seed |