tpm: PCR allocate during PCR extend to disable the unsupported algorithms
During PCR extend process, if any unsupported algorithms are active,
try to use PCR allocate to inactivate them.
Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/lib/tpm-v2.c b/lib/tpm-v2.c
index aa02a9e..9ca7933 100644
--- a/lib/tpm-v2.c
+++ b/lib/tpm-v2.c
@@ -344,7 +344,10 @@
if (!tpm2_check_active_banks(dev)) {
log_err("Cannot extend PCRs if all the TPM enabled algorithms are not supported\n");
- return -EINVAL;
+
+ ret = tpm2_pcr_allocate(dev, 0);
+ if (ret)
+ return -EINVAL;
}
/*
* Fill the command structure starting from the first buffer: