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tpm: PCR allocate during PCR extend to disable the unsupported algorithms

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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>
This commit is contained in:
Raymond Mao 2025-01-27 06:58:50 -08:00 • committed by Ilias Apalodimas
parent d487c3283c
commit e7e166dabf
1 changed files with 4 additions and 1 deletions
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5
lib/tpm-v2.c
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@ -344,7 +344,10 @@ u32 tpm2_pcr_extend(struct udevice *dev, u32 index, u32 algorithm,
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: