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 --- lib/tpm.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/lib/tpm.c b/lib/tpm.c index 1b3a112311..c32fc51ff9 100644 --- a/lib/tpm.c +++ b/lib/tpm.c @@ -249,6 +249,7 @@ static uint32_t tpm_sendrecv_command(const void *command, int err, ret; uint8_t response_buffer[COMMAND_BUFFER_SIZE]; size_t response_length; + int i;
if (response) { response_length = *size_ptr; @@ -260,15 +261,24 @@ static uint32_t tpm_sendrecv_command(const void *command, ret = uclass_first_device_err(UCLASS_TPM, &dev); if (ret) return ret; + err = tpm_xfer(dev, command, tpm_command_size(command), response, &response_length);
if (err < 0) return TPM_LIB_ERROR; + if (size_ptr) *size_ptr = response_length;
- return tpm_return_code(response); + ret = tpm_return_code(response); + + debug("TPM response [ret:%d]: ", ret); + for (i = 0; i < response_length; i++) + debug("%02x ", ((u8 *)response)[i]); + debug("\n"); + + return ret; }
int tpm_set_specification(int version)