From e7e166dabf129aae1fc57fe637ffc37d022ea45a Mon Sep 17 00:00:00 2001 From: Raymond Mao Date: Mon, 27 Jan 2025 06:58:50 -0800 Subject: [PATCH] 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 Acked-by: Ilias Apalodimas Reviewed-by: Ilias Apalodimas Signed-off-by: Ilias Apalodimas --- lib/tpm-v2.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/lib/tpm-v2.c b/lib/tpm-v2.c index aa02a9e9611..9ca7933c094 100644 --- a/lib/tpm-v2.c +++ b/lib/tpm-v2.c @@ -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: -- 2.39.5