tree d92045e63da49c13e7adcbd09534493f02661c65
parent 859ecdf51771185d4b7d983e4152acf7099c1728
author Martin Roth <martin@coreboot.org> 1627419371 -0600
committer Felix Held <felix-coreboot@felixheld.de> 1631130091 +0000

util/amdtools: Add script to update the SPI speed in the EFS header

The update_efs_spi_speed allows changing the SPI speed manually in a
binary that has already been built.  This will allow binaries not built
for the EM100 SPI ROM emulator to be updated so that they will work.
There is a corresponding change that will check to see if the EFS value
has been modified from the original speed and will prevent coreboot from
updating the SPI speed and mode.

BUG=b:177233017
TEST=Update SPI speed in existing binary.  See that SPI speed has
changed.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: I905a9fd8bd93a28aab927dffecbbcf24934b9e03
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56644
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>