tpm: add TPM2_Startup command support
Add support for the TPM2_Startup command.
Change the command file and the help accordingly.
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-v2.c b/lib/tpm-v2.c
index 35dee03..1a81177 100644
--- a/lib/tpm-v2.c
+++ b/lib/tpm-v2.c
@@ -9,3 +9,24 @@
#include <tpm-common.h>
#include <tpm-v2.h>
#include "tpm-utils.h"
+
+u32 tpm2_startup(enum tpm2_startup_types mode)
+{
+ const u8 command_v2[12] = {
+ tpm_u16(TPM2_ST_NO_SESSIONS),
+ tpm_u32(12),
+ tpm_u32(TPM2_CC_STARTUP),
+ tpm_u16(mode),
+ };
+ int ret;
+
+ /*
+ * Note TPM2_Startup command will return RC_SUCCESS the first time,
+ * but will return RC_INITIALIZE otherwise.
+ */
+ ret = tpm_sendrecv_command(command_v2, NULL, NULL);
+ if (ret && ret != TPM2_RC_INITIALIZE)
+ return ret;
+
+ return 0;
+}