efi_loader: Change the return values if a TPM is missing during GetEventLog

The function defined by the TCG spec looks like:

typedef
EFI_STATUS
(EFIAPI *EFI_TCG2_GET_EVENT_LOG) (
 IN EFI_TCG2_PROTOCOL *This,
 IN EFI_TCG2_EVENT_LOG_FORMAT EventLogFormat,
 OUT EFI_PHYSICAL_ADDRESS *EventLogLocation,
 OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry,
 OUT BOOLEAN *EventLogTruncated
);
and the spec mandates that
"If no TPM is present, the function SHALL set the following values and return
	EFI_SUCCESS:
	EventLogLocation = NULL
	EventLogLastEntry = NULL
	EventLogTruncated = FALSE"

However, if we set it to NULL the local assignment is discarded when the
function returns. Set it to 0, although on some platforms that's a valid
address.

Signed-off-by: Ilias Apalodimas <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>

0 files changed, 0 insertions, 0 deletions