tpm: add possible traces to analyze buffers returned by the TPM
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>
diff --git a/lib/tpm-common.c b/lib/tpm-common.c
index 4c2b939..33fa859 100644
--- a/lib/tpm-common.c
+++ b/lib/tpm-common.c
@@ -153,6 +153,7 @@
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 @@
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)