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a35218e204
Add support for OTP memory: if needed store serial number in first bank. BUG=chromium:746471 BRANCH=none TEST=On sweetberry, check we can write serial number with serialno command. Check serial number survive a firmware update. First, check without write protect, check we can write 0s (but not 1s) serialno Serial number: NNNNNNNNNNNNNNNNNNNNNN > > serial set MMMMMMMMMMMMMMMMMMMMMMMMMMMMM Saving serial number Serial number: LLLLLLLLLLLLLLLLLLLLLL After lock enabled, check we can not overwrite. > serial set AMMMMMMMMMMMMMMMMMMMMMMMMMMMM Saving serial number Serial number: LLLLLLLLLLLLLLLLLLLLLL Access Denied Check that serialno returns "Uninitialized" if it was never set. Change-Id: I9ab08486a7c3e1958e964649640d69b5b70947e3 Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/580290 Reviewed-by: Nick Sanders <nsanders@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