diff options
| author | Che-Liang Chiou <clchiou@chromium.org> | 2012-06-29 13:23:07 +0800 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-06-29 00:19:08 -0700 |
| commit | 552ae43be041331147c5d2aa3897db7a1011637d (patch) | |
| tree | 028c0a2e62d378ddaaf7230e3345fa92c38f2fd4 | |
| parent | 61603e2d6128d6fadd2fd8b1f16d60c5df8c00bd (diff) | |
| download | vboot-552ae43be041331147c5d2aa3897db7a1011637d.tar.gz | |
Expose getter of virtual dev switch value
Firmware needs to be able to read virtual dev switch to set up device
tree blob which is passed to kernel and eventually read by crossystem.
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
BUG=chrome-os-partner:10947
TEST=With this change, U-Boot can read virtual dev switch.
Change-Id: Ifac2ec3d39b8e9c1100031fdef085c28bb8b37c7
Reviewed-on: https://gerrit.chromium.org/gerrit/26394
Reviewed-by: Simon Glass <sjg@chromium.org>
Commit-Ready: Che-Liang Chiou <clchiou@chromium.org>
Tested-by: Che-Liang Chiou <clchiou@chromium.org>
| -rw-r--r-- | firmware/include/vboot_api.h | 2 | ||||
| -rw-r--r-- | firmware/lib/rollback_index.c | 14 |
2 files changed, 16 insertions, 0 deletions
diff --git a/firmware/include/vboot_api.h b/firmware/include/vboot_api.h index 5f11313d..62b9daa1 100644 --- a/firmware/include/vboot_api.h +++ b/firmware/include/vboot_api.h @@ -381,6 +381,8 @@ VbError_t VbExTpmOpen(void); VbError_t VbExTpmSendReceive(const uint8_t* request, uint32_t request_length, uint8_t* response, uint32_t* response_length); +/* Utility function to get the virtual dev-mode flag value. 0=off, 1=on */ +VbError_t VbGetVirtualDevMode(int *val); /*****************************************************************************/ /* Non-volatile storage */ diff --git a/firmware/lib/rollback_index.c b/firmware/lib/rollback_index.c index 668312e6..4666c3e0 100644 --- a/firmware/lib/rollback_index.c +++ b/firmware/lib/rollback_index.c @@ -131,6 +131,20 @@ uint32_t WriteSpaceFirmware(RollbackSpaceFirmware* rsf) { return TPM_E_CORRUPTED_STATE; } +VbError_t VbGetVirtualDevMode(int *val) { + RollbackSpaceFirmware rsf; + + VBDEBUG(("TPM: Entering %s()\n", __func__)); + if (TPM_SUCCESS != ReadSpaceFirmware(&rsf)) + return VBERROR_TPM_FIRMWARE_SETUP; + + VBDEBUG(("TPM: flags are 0x%02x\n", rsf.flags)); + *val = (rsf.flags & FLAG_VIRTUAL_DEV_MODE_ON) ? 1 : 0; + + VBDEBUG(("TPM: Leaving %s()\n", __func__)); + return VBERROR_SUCCESS; +} + uint32_t SetVirtualDevMode(int val) { RollbackSpaceFirmware rsf; |