[PATCH 5/8] tpm: sandbox: Allow init of TPM in a different phase

Simon Glass sjg at chromium.org
Tue Mar 1 01:11:22 CET 2022

At present the emulator assumes that the TPM is inited in the same phase
where it is used. But in fact SPL may init the TPM, so we don't want to
complain when U-Boot proper later uses it. Remove this check.

It might be best to save this information into the device state for the
TPM, so that we can make sure the TPM was inited at some point. For now,
this seems good enough.

Signed-off-by: Simon Glass <sjg at chromium.org>

 drivers/tpm/tpm2_tis_sandbox.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/tpm/tpm2_tis_sandbox.c b/drivers/tpm/tpm2_tis_sandbox.c
index ac6eb14353..c26f5d35ab 100644
--- a/drivers/tpm/tpm2_tis_sandbox.c
+++ b/drivers/tpm/tpm2_tis_sandbox.c
@@ -366,8 +366,10 @@ static int sandbox_tpm2_check_readyness(struct udevice *dev, int command)
-		if (!tpm->tests_done)
-			return TPM2_RC_NEEDS_TEST;
+		/* Skip this, since the startup may have happened in SPL
+		 * if (!tpm->tests_done)
+		 *    return TPM2_RC_NEEDS_TEST;
+		 */

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