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nvram: Add option to reset NVRAM to default parameters on every boot

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In specific configurations, such as homogeneous supercomputing systems,
changeable NVRAM parameters are more of a liability than a useful tool.
This patch allows a coreboot image to be compiled that will always set
the NVRAM parameters to their default values, reducing maintainance
overhead on large clusters.

Change-Id: Ic03e34211d4a58cd60740f2d9a6b50e11fe85822
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/8446
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Timothy Pearson
2015-02-14 16:15:31 -06:00
committed by Alexandru Gagniuc
parent 5fc1ad101c
commit f20c6e81fe
3 changed files with 13 additions and 1 deletions
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2
src/arch/x86/include/bootblock_common.h
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@@ -32,7 +32,7 @@ static void bootblock_mainboard_init(void)
#if CONFIG_USE_OPTION_TABLE
static void sanitize_cmos(void)
{
if (cmos_error() || !cmos_chksum_valid()) {
if (cmos_error() || !cmos_chksum_valid() || IS_ENABLED(CONFIG_STATIC_OPTION_TABLE)) {
unsigned char *cmos_default = (unsigned char*)walkcbfs("cmos.default");
if (cmos_default) {
int i;