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Software sync checks for shutdown-requested in all code paths

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Previously,
1) AP-RO, EC-RO -> checked
2) AP-RW, EC-RO transition to EC-RW -> checked
3) AP-RW, EC-RW already -> NOT checked

Now, (3) calls VbExIsShutdownRequested() as well.

This fix is needed to avoid inconsistent behavior of software sync
after we ship a RW update.

Whether we *should* actually shut down or not based on how/why we
booted is a separate issue to be addressed by the U-boot
implementation of VbExIsShutdownRequested() in a separate CL.

BUG=chromium-os:38645
BRANCH=all
TEST=make runtests

Manual testing also possible - force AP-RW firmware, then reboot with
lid closed.  Previously, the first boot would shut down because of
(2), but subsequent reboots of the AP only wouldn't because of (3).

Change-Id: I226202f48d793b88a30ffa62731de878f8c22315
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/43044
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Randall Spangler
2013-02-11 10:08:51 -08:00
committed by ChromeBot
parent fe510c0620
commit 886a9047f0
2 changed files with 39 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
firmware/lib/vboot_api_kernel.c
View File

@@ -742,6 +742,18 @@ VbError_t VbEcSoftwareSync(VbCommonParams *cparams)
}
VBDEBUG(("VbEcSoftwareSync() in EC-RW and it matches\n"));
/*
* If shutdown is requested, just power the AP back off. This
* covers the case where the lid is closed when then system
* boots.
*/
if (VbExIsShutdownRequested()) {
VBDEBUG(("VbEcSoftwareSync() "
"sees shutdown-requested\n"));
return VBERROR_SHUTDOWN_REQUESTED;
}
return VBERROR_SUCCESS;
}

27
tests/vboot_api_kernel3_tests.c
View File

@@ -35,6 +35,7 @@ static int ec_run_image;
static int update_retval;
static int ec_updated;
static int get_expected_retval;
static int shutdown_request_calls_left;
static uint8_t mock_ec_hash[32];
static int mock_ec_hash_size;
@@ -79,6 +80,7 @@ static void ResetMocks(void)
update_retval = VBERROR_SUCCESS;
run_retval = VBERROR_SUCCESS;
get_expected_retval = VBERROR_SUCCESS;
shutdown_request_calls_left = -1;
Memset(mock_ec_hash, 0, sizeof(mock_ec_hash));
mock_ec_hash[0] = 42;
@@ -99,6 +101,16 @@ static void ResetMocks(void)
/* Mock functions */
uint32_t VbExIsShutdownRequested(void)
{
if (shutdown_request_calls_left == 0)
return 1;
else if (shutdown_request_calls_left > 0)
shutdown_request_calls_left--;
return 0;
}
int VbExTrustEC(void)
{
return trust_ec;
@@ -232,6 +244,11 @@ static void VbSoftwareSyncTest(void)
test_ssync(VBERROR_SIMULATED,
VBNV_RECOVERY_EC_PROTECT, "Protect error");
ResetMocks();
shared->flags |= VBSD_LF_USE_RO_NORMAL;
shutdown_request_calls_left = 0;
test_ssync(VBERROR_SHUTDOWN_REQUESTED, 0, "AP-RO shutdown requested");
/* Calculate hashes */
ResetMocks();
mock_ec_hash_size = 0;
@@ -325,6 +342,16 @@ static void VbSoftwareSyncTest(void)
protect_retval = VBERROR_SIMULATED;
test_ssync(VBERROR_SIMULATED,
VBNV_RECOVERY_EC_PROTECT, "Protect error");
ResetMocks();
shutdown_request_calls_left = 0;
test_ssync(VBERROR_SHUTDOWN_REQUESTED, 0,
"AP-RW, EC-RO -> EC-RW shutdown requested");
ResetMocks();
mock_in_rw = 1;
shutdown_request_calls_left = 0;
test_ssync(VBERROR_SHUTDOWN_REQUESTED, 0, "AP-RW shutdown requested");
}
int main(void)