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| author | Furquan Shaikh <furquan@google.com> | 2015-09-17 12:40:23 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-10-28 22:28:28 +0100 |
| commit | 6fecb7106ef6846e7f75cff59b8d2f9d7ed1109a (patch) | |
| tree | 4f1bfe9d984a93de979f0e4c7d3c701bfba22a47 | |
| parent | 5dba15c180e9bd4e4e24cf59fdaaee9293a009bc (diff) | |
| download | coreboot-6fecb7106ef6846e7f75cff59b8d2f9d7ed1109a.tar.xz | |
vboot2: Fix flows for TPM_E_MUST_REBOOT
While migrating from vboot1 to vboot2, the tpm_init was moved out of
vboot library and implemented in coreboot. However, while doing this,
the initial factory flow was missed.
We need to ensure following flow for tpm_init:
1. Perform tpm_init
2. If tpm_init fails, set secdata_context flag to indicate to vboot
that tpm needs reboot.
3. Call vb2_api_phase1
4. If vb2_api_phase1 returns error code saying boot into recovery,
continue booting into recovery. For all other error codes, save
context if required and reboot.
[pg: everything but step 2 was already done, so this upstream commit is
quite minimal]
CQ-DEPEND=CL:300572
BUG=chrome-os-partner:45462
BRANCH=None
TEST=Verified behavior on smaug. Steps to test:
1. Reboot into recovery
2. tpmc clear
3. Reboot device
Expected Behavior: Device should reboot after Enabling TPM. Should not
enter recovery
Confirmed that the device behaves as expected.
Change-Id: I72f08d583b744bd77accadd06958c61ade298dfb
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 85ac93137f3cfb28668dcfa18dfc773bf910d44e
Original-Change-Id: I38ab9b9d6c2a718ccc8641377508ffc93fef2ba1
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/300570
Original-Commit-Ready: Furquan Shaikh <furquan@chromium.org>
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Randall Spangler <rspangler@chromium.org>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/12205
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
| -rw-r--r-- | src/vendorcode/google/chromeos/vboot2/antirollback.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/vendorcode/google/chromeos/vboot2/antirollback.c b/src/vendorcode/google/chromeos/vboot2/antirollback.c index 407b19cecd..654fd3438f 100644 --- a/src/vendorcode/google/chromeos/vboot2/antirollback.c +++ b/src/vendorcode/google/chromeos/vboot2/antirollback.c @@ -257,6 +257,7 @@ uint32_t setup_tpm(struct vb2_context *ctx) * reset. We do a hard reset to get around this. */ VBDEBUG("TPM: soft reset detected\n", result); + ctx->flags |= VB2_CONTEXT_SECDATA_WANTS_REBOOT; return TPM_E_MUST_REBOOT; } else if (result != TPM_SUCCESS) { VBDEBUG("TPM: tlcl_startup returned %08x\n", result); @@ -304,6 +305,7 @@ uint32_t setup_tpm(struct vb2_context *ctx) RETURN_ON_FAILURE(tlcl_set_enable()); RETURN_ON_FAILURE(tlcl_set_deactivated(0)); VBDEBUG("TPM: Must reboot to re-enable\n"); + ctx->flags |= VB2_CONTEXT_SECDATA_WANTS_REBOOT; return TPM_E_MUST_REBOOT; } |