Certain CPUs require the default SMM region to be backed up on resume after a suspend. The reason is that in order to relocate the SMM region the default SMM region has to be used. As coreboot is unaware of how that memory is used it needs to be backed up. Therefore provide a common method for doing this. BUG=chrome-os-partner:26563 BRANCH=baytrail TEST=Confirmed SMM backup region in cbmem. Suspend and Resumed. Change-Id: I65fe1317dc0b2203cb29118564fdba995770ffea Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/188716 Reviewed-by: Marc Jones <marc.jones@se-eng.com> |
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