diff options
| author | Bill Richardson <wfrichar@chromium.org> | 2012-12-17 14:35:22 -0800 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-12-17 17:05:01 -0800 |
| commit | 699ebf398f84bb0a6138856c38db1d693e581f85 (patch) | |
| tree | 42d8e4bbbc9c147c165be896e076c70bd005bcbb /utility | |
| parent | b55c538fca8939e58d20c127a9f42ce4eba7282c (diff) | |
| download | vboot-699ebf398f84bb0a6138856c38db1d693e581f85.tar.gz | |
Add recovery_subcode field to nvstorage and crossystem
This just adds a one-byte field in the nvstorage region for use in debugging
hard-to-catch errors. There's no official meaning or expectation for this
field. It's just a handy place to emit some information.
BUG=chrome-os-partner:11534
BRANCH=parrot
TEST=manual
Just change the value and ensure that it persists across a (working) reboot.
It's only updated at specific points under very exacting error conditions,
so all we really want to test is that it works as a place to store some
extra info.
crossystem recovery_subcode
crossystem recovery_subcode=14
reboot
crossystem recovery_subcode
The recovery_subcode byte is at index [6] of the VbNv.raw bytes that appear
when you press TAB, so you can find it there too:
VbNv.raw: 60 20 00 00 00 00 0e 00 00 00 00 00 00 00 00 65
Decimal 14 == 0x0e
Change-Id: I1930b8f81a03ab838dbee99a8d72c35a444efdfd
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/39803
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Diffstat (limited to 'utility')
| -rw-r--r-- | utility/crossystem_main.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/utility/crossystem_main.c b/utility/crossystem_main.c index d8191075..91465002 100644 --- a/utility/crossystem_main.c +++ b/utility/crossystem_main.c @@ -66,6 +66,7 @@ const Param sys_param_list[] = { {"platform_family", IS_STRING, "Platform family type"}, {"recovery_reason", 0, "Recovery mode reason for current boot"}, {"recovery_request", CAN_WRITE, "Recovery mode request (writable)"}, + {"recovery_subcode", CAN_WRITE, "Recovery reason subcode (writable)"}, {"recoverysw_boot", 0, "Recovery switch position at boot"}, {"recoverysw_cur", 0, "Recovery switch current position"}, {"recoverysw_ec_boot", 0, "Recovery switch position at EC boot"}, |