diff options
| author | Vadim Bendebury <vbendeb@chromium.org> | 2016-07-03 15:56:41 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-07-13 23:59:44 +0200 |
| commit | adfbbde7c99a13ba69abf1e7123453f4db513e53 (patch) | |
| tree | 323fdd4eec4a497d683637152a18222db82f435a /src | |
| parent | 7ee057c700dd3481eae9a4b3ee13831798fe8ea5 (diff) | |
tpm2: add tlcl_force_clear and use it before factory init
tlcl_force_clear() needs to be issued each time when the device mode
switches between normal/development/recovery.
This patch adds command implementation using TPM_Clear TPM2 command,
and also invokes it before factory initialization.
BRANCH=none
BUG=chrome-os-partner:50645
TEST=verified that TPM_Clear command succeeds at factory startup and
the boot proceeds normally.
Change-Id: Ia431390870cbe448bc1b6f1755ed17953be9bdf1
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 347ff17b97da45fa4df547ff32f9dd2c8972cefd
Original-Change-Id: I2a0e62527ad46f9dd060afe5e75c7e4d56752849
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/358095
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-by: Darren Krahn <dkrahn@chromium.org>
Reviewed-on: https://review.coreboot.org/15636
Tested-by: build bot (Jenkins)
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@googlemail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/lib/tpm2_tlcl.c | 10 | ||||
| -rw-r--r-- | src/vendorcode/google/chromeos/vboot2/antirollback.c | 1 |
2 files changed, 10 insertions, 1 deletions
diff --git a/src/lib/tpm2_tlcl.c b/src/lib/tpm2_tlcl.c index 8412ed0784..ec20ca9446 100644 --- a/src/lib/tpm2_tlcl.c +++ b/src/lib/tpm2_tlcl.c @@ -81,7 +81,15 @@ uint32_t tlcl_finalize_physical_presence(void) uint32_t tlcl_force_clear(void) { - printk(BIOS_INFO, "%s:%s:%d\n", __FILE__, __func__, __LINE__); + struct tpm2_response *response; + + response = tpm_process_command(TPM2_Clear, NULL); + printk(BIOS_INFO, "%s: response is %x\n", + __func__, response ? response->hdr.tpm_code : -1); + + if (!response || response->hdr.tpm_code) + return TPM_E_IOERROR; + return TPM_SUCCESS; } diff --git a/src/vendorcode/google/chromeos/vboot2/antirollback.c b/src/vendorcode/google/chromeos/vboot2/antirollback.c index bce2ca118a..5b738c4897 100644 --- a/src/vendorcode/google/chromeos/vboot2/antirollback.c +++ b/src/vendorcode/google/chromeos/vboot2/antirollback.c @@ -145,6 +145,7 @@ static uint32_t set_kernel_space(const void *kernel_blob) static uint32_t _factory_initialize_tpm(struct vb2_context *ctx) { + RETURN_ON_FAILURE(tlcl_force_clear()); RETURN_ON_FAILURE(set_firmware_space(ctx->secdata)); RETURN_ON_FAILURE(set_kernel_space(secdata_kernel)); return TPM_SUCCESS; |