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| author | Daisuke Nojiri <dnojiri@chromium.org> | 2020-05-13 18:23:52 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-05-14 08:38:15 +0000 |
| commit | 63a8d07fbc74c8a141a8d30f56434846d8e5af08 (patch) | |
| tree | c66d71335650f89d4a945308cb84f1f27c6f7095 /include/system.h | |
| parent | b70e2768c856641e91205fdb50b20a4147b2a7e2 (diff) | |
| download | chrome-ec-63a8d07fbc74c8a141a8d30f56434846d8e5af08.tar.gz | |
system: Add EC_RESET_FLAG_EFS
This patch adds EC_RESET_FLAG_EFS. It indicates EC jumped to RW by
successfully running EFS.
system_jumped_late can be used to avoid running some code twice
(once in RO and again in RW). Such code is currently (wrongly)
guarded by system_jumped_to_this_image.
BUG=b:156101251, chromium:1072743
BRANCH=none
TEST=Verified the bug is fixed.
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Change-Id: I58fc18510b2f95dfd116cbacba09875cb7cf5051
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2200245
Diffstat (limited to 'include/system.h')
| -rw-r--r-- | include/system.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/system.h b/include/system.h index 03a2c15238..360b850470 100644 --- a/include/system.h +++ b/include/system.h @@ -120,10 +120,22 @@ uintptr_t get_program_memory_addr(enum ec_image copy); /** * Return non-zero if the system has switched between image copies at least * once since the last real boot. + * + * You probably need to call system_jumped_late instead if you're trying to + * avoid initializing something again in RW. */ int system_jumped_to_this_image(void); /** + * Return non-zero if late (legacy) sysjump occurred. + * + * This happens when EFS failed but RO still jumped to RW late on AP's request. + * This is typically called to avoid running some code twice (once in RO and + * again in RW). + */ +int system_jumped_late(void); + +/** * Preserve data across a jump between images. * * This may ONLY be called from within a HOOK_SYSJUMP handler. |