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tpm: add possible traces to analyze buffers returned by the TPM

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When debugging, it is welcome to get more information about what the TPM
returns. Add the possibility to print the packets received to show their
exact content.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Miquel Raynal 2018-05-15 11:57:10 +02:00 • committed by Tom Rini
parent f6872816ce
commit aa643013e4
1 changed files with 9 additions and 1 deletions
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10
lib/tpm-common.c
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@ -153,6 +153,7 @@ u32 tpm_sendrecv_command(const void *command, void *response, size_t *size_ptr)
int err, ret;
u8 response_buffer[COMMAND_BUFFER_SIZE];
size_t response_length;
int i;
if (response) {
response_length = *size_ptr;
@ -172,7 +173,14 @@ u32 tpm_sendrecv_command(const void *command, void *response, size_t *size_ptr)
if (size_ptr)
*size_ptr = response_length;
return tpm_return_code(response);
ret = tpm_return_code(response);
log(LOGC_NONE, LOGL_DEBUG, "TPM response [ret:%d]: ", ret);
for (i = 0; i < response_length; i++)
log(LOGC_NONE, LOGL_DEBUG, "%02x ", ((u8 *)response)[i]);
log(LOGC_NONE, LOGL_DEBUG, "\n");
return ret;
}
int tpm_init(void)