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| author | Patrick Georgi <patrick.georgi@secunet.com> | 2012-11-15 14:57:27 +0100 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2012-11-19 22:06:51 +0100 |
| commit | d8e6d4085ffd10d399551a2ec75a57fd1f594fec (patch) | |
| tree | 24a41d3cd82080839bc7ed98eb4870a873cee691 /src/arch | |
| parent | f943901777990554e3f5fb27b63613f6cd95c958 (diff) | |
| download | coreboot-d8e6d4085ffd10d399551a2ec75a57fd1f594fec.tar.xz | |
bootblock: Guard CMOS rewrite in disable/enable RTC
This ensures that there's only one disable/enable cycle for
the entire rewrite instead for every single byte.
Change-Id: Ic06e6dcb08976d158ff784660838c0fbad875176
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1869
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/include/bootblock_common.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/arch/x86/include/bootblock_common.h b/src/arch/x86/include/bootblock_common.h index c9674f4a9c..4a128bce68 100644 --- a/src/arch/x86/include/bootblock_common.h +++ b/src/arch/x86/include/bootblock_common.h @@ -27,9 +27,11 @@ static void sanitize_cmos(void) unsigned char *cmos_default = (unsigned char*)walkcbfs("cmos.default"); if (cmos_default) { int i; + cmos_disable_rtc(); for (i = 14; i < 128; i++) { cmos_write(cmos_default[i], i); } + cmos_enable_rtc(); } } } |