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The idea of this flag is to be able to protect/unprotect only the
RW portion of the flash. In the (usual) case where ALL=RO+RW, with
no other region, this makes no difference compared to the existing
EC_FLASH_PROTECT_ALL_* flag, and this flag may not be supported.
This is necessary for futher work, where a ROLLBACK region is added,
so that RW/ROLLBACK can be protected/unprotected individually.
Only support for stm32f0 is added, as this is the target for hammer.
BRANCH=none
BUG=chrome-os-partner:61671
TEST=build and flash hammer (stm32f072)
flashinfo => RO+RW not protected
flashwp true; reboot => only RO protected
flashwp all; reboot => RO+RW protected
flashwp noall; reboot => only RO protected
flashwp rw/norw not available
TEST=enable CONFIG_FLASH_PROTECT_RW
build and flash hammer (stm32f072)
flashinfo => RO+RW not protected
flashwp true; reboot => only RO protected
flashwp all; reboot => RO+RW protected
flashwp noall; reboot => only RO protected
flashwp rw; reboot => RO+RW protected
flashwp norw; reboot => only RO protected
TEST=build and flash reef (npcx)
flashinfo => RO+RW not protected
flashwp true => RO protected
flashwp all; flashinfo => all_now displayed
reboot => RO protected
flashwp rw/norw not available
Change-Id: Ica6f499cf2e8a9345b08ef52c915655a983ffe3c
Reviewed-on: https://chromium-review.googlesource.com/442265
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>