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* util/amdtools: Add script to update the SPI speed in the EFS headerMartin Roth2021-09-081-0/+121
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>