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| author | Randall Spangler <rspangler@chromium.org> | 2012-07-16 14:19:59 -0700 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-07-16 17:49:10 -0700 |
| commit | acf6f963a160f045d6b4c58f0ee3e249ded76b4e (patch) | |
| tree | 1c724e7480104f9fa1284f6a3f013cbd44501c12 /include/vboot.h | |
| parent | a42edb86c59cbc145eb99bd5b65bbd1f5567320e (diff) | |
| download | chrome-ec-acf6f963a160f045d6b4c58f0ee3e249ded76b4e.tar.gz | |
Flash pre-init reboots if it needs to clear protection registers
BUG=chrome-os-partner:11171
TEST=manual
1. Clear some of the writable-bits in the flash registers
> ww 0x400fe40c 0xffff1234
write 0x400fe40c = 0xffff1234
> rw 0x400fe40c
read 0x400fe40c = 0xffff1234
2. Reset using power+refresh
3. Register should be clear again
> rw 0x400fe40c
read 0x400fe40c = 0xffffffff
4. Sysinfo should indicate reset-pin reason AND hard-reset reason
> sysinfo
Reset flags: 0x0000000a (reset-pin power-on)
5. Reset using power+refresh
6. Sysinfo should indicate reset-pin reason only
> sysinfo
Reset flags: 0x00000002 (reset-pin)
7. Clear writable-bits again
> ww 0x400fe40c 0xffff1234
write 0x400fe40c = 0xffff1234
8. Jump to another image. This should NOT trigger a hard reset.
> sysjump A
> sysinfo
Reset flags: 0x00000402 (reset-pin sysjump)
Change-Id: Ie1d6af2acc68217bb82faae464798ee85d63d1ea
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/27540
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Diffstat (limited to 'include/vboot.h')
| -rw-r--r-- | include/vboot.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/include/vboot.h b/include/vboot.h index b6ec4b9e6b..a77243bc7e 100644 --- a/include/vboot.h +++ b/include/vboot.h @@ -10,9 +10,6 @@ #include "common.h" -/* Pre-initialize the module. This occurs before clocks or tasks are set up. */ -int vboot_pre_init(void); - /* * Check verified boot signatures, and jump to one of the RW images if * necessary. |