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cr50: use new function to verify index presence

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The new TPM API function works even before TPM Startup was executed,
this would allow CCD to read FWMP even if the AP does not boot up.

CQ-DEPEND=CL:1020725
BRANCH=cr50, cr50-mp
BUG=b:67009375
TEST=verified that FWMP can be read both before and after AP is
     booted, and that missing FWMP is also processed properly in both
     cases.

Change-Id: I4e57e6211fdb8fa3166f261aa861dba9bab433a1
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1020785
Reviewed-by: Andrey Pronin <apronin@chromium.org>
This commit is contained in:
Vadim Bendebury
2018-04-19 20:04:02 -07:00
committed by chrome-bot
parent a820df3fd6
commit 9439d0e121
1 changed files with 3 additions and 3 deletions
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6
board/cr50/tpm_nvmem_read.c
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@@ -19,12 +19,12 @@
enum tpm_read_rv read_tpm_nvmem(uint16_t obj_index,
uint16_t obj_size, void *obj_value)
{
TPMI_RH_NV_INDEX object_handle;
TPM_HANDLE object_handle;
NV_INDEX nvIndex;
object_handle = HR_NV_INDEX + obj_index;
if (NvIndexIsAccessible(object_handle,
TPM_CC_NV_Read) != TPM_RC_SUCCESS) {
if (!NvEarlyStageFindHandle(object_handle)) {
CPRINTF("%s: object at 0x%x not found\n", __func__, obj_index);
return tpm_read_not_found;
}