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x86: Set BOOT_MEDIA_SPI_BUS

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BOOT_MEDIA_SPI_BUS is a Kconfig variable used on some ARM-based
platforms to set up CBFS media. It turns out it can also be helpful
for setting up the eventlog which is intended to reside on the same
SPI flash as CBFS. Setting it for x86 will allow us to remove an
assumption about which SPI bus is used for this flash device.

Long term this can go away as we come up with a better abstraction
for the eventlog's backing store. This is only intended to help us
get from here to there.

BUG=none
BRANCH=none
TEST=built and booted on Link
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: I1d84dc28592fbece33a70167be59e83bca9cd7bc
Reviewed-on: https://chromium-review.googlesource.com/191202
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
David Hendricks 2014-03-21 17:09:29 -07:00 • committed by chrome-internal-fetch
commit 200aa7c5b1
1 changed files with 7 additions and 0 deletions
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7
src/cpu/x86/Kconfig
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@ -128,3 +128,10 @@ config BACKUP_DEFAULT_SMM_REGION
help
The cpu support will select this option if the default SMM region
needs to be backed up for suspend/resume purposes.
config BOOT_MEDIA_SPI_BUS
int
default 0
depends on SPI_FLASH
help
Most x86 systems which boot from SPI flash boot using bus 0.