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Expose getter of virtual dev switch value

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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>
This commit is contained in:
Che-Liang Chiou
2012-06-29 13:23:07 +08:00
committed by Gerrit
parent 61603e2d61
commit 552ae43be0
2 changed files with 16 additions and 0 deletions
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14
firmware/lib/rollback_index.c
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@@ -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;