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2cab8b2081
The cr50 SPI master can control the external AP and EC SPI ROM. This change adds support for doing spi_transactions, but does not use the SPI transactions for anything except console commands. This support will be used for flashing the AP and EC through CCD. For now AP and EC flash select must be done manually using the spi_flash_select console command. Flash select should be disabled after use, because it will prevent the system from booting. BUG=chrome-os-partner:50701 BRANCH=none TEST=Enable spi_flash commands. Select AP ROM and verify spi_flashinfo, read, erase, and write commands work properly. Select EC ROM and verify the same commands. Change-Id: I16c55015794f8513effe0fa5712488a84bed2627 Signed-off-by: Mary Ruthven <mruthven@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/339844 Reviewed-by: Shawn N <shawnn@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly