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ddbfe690e2
In eSPI systems, when the Host performs a data read from the Shared Memory space, the returned data may be corrupted. This is a result of the Core-to-Host access enable bit being toggled (by toggling CSAE bit in SIBCTRL register) during an eSPI transaction. The workaround in this CL is to set CSAE bit to 1 during initialization and remove the toggling of CSAE bit from other EC firmware code. (i.e., let the CSAE bit be always 1.) BRANCH=none BUG=none TEST=No build errors for make buildall. Flash poppy ec image, make sure it can boot to OS. Run "ectool version" over 100000 times, no error occurs. Change-Id: I7aac6805ece64e8f77964d4acb026d9871cd2ebe Signed-off-by: CHLin <CHLIN56@nuvoton.com> Reviewed-on: https://chromium-review.googlesource.com/590396 Commit-Ready: Shawn N <shawnn@chromium.org> Tested-by: CH Lin <chlin56@nuvoton.com> Reviewed-by: Shawn N <shawnn@chromium.org>