shim/tpm: fix trigger failure caused by NULL arguments

Certain AMI BIOS (Intel NUC5i3MYBE BIOS version 0037) may make the strict
check on the last 3 arguments passed to get_event_log() and don't expect
NULL pointers are passed. In order to work around this failure
(EFI_INVALID_PARAMETER), pass them even though we really don't use it.

Signed-off-by: Lans Zhang <jia.zhang@windriver.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/tpm.c b/tpm.c
index 9b5a8991..4395821d 100644
--- a/tpm.c
+++ b/tpm.c
@@ -71,9 +71,13 @@ static BOOLEAN tpm2_present(efi_tpm2_protocol_t *tpm)
  */
 static EFI_STATUS trigger_tcg2_final_events_table(efi_tpm2_protocol_t *tpm2)
 {
+	EFI_PHYSICAL_ADDRESS start;
+	EFI_PHYSICAL_ADDRESS end;
+	BOOLEAN truncated;
+
 	return uefi_call_wrapper(tpm2->get_event_log, 5, tpm2,
-				 EFI_TCG2_EVENT_LOG_FORMAT_TCG_2, NULL,
-				 NULL, NULL);
+				 EFI_TCG2_EVENT_LOG_FORMAT_TCG_2, &start,
+				 &end, &truncated);
 }
 
 EFI_STATUS tpm_log_event(EFI_PHYSICAL_ADDRESS buf, UINTN size, UINT8 pcr,