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/cmd/tpm-v2.c b/cmd/tpm-v2.c
index 8564aba..8589dae 100644
--- a/cmd/tpm-v2.c
+++ b/cmd/tpm-v2.c
@@ -11,9 +11,30 @@
#include <tpm-v2.h>
#include "tpm-user-utils.h"
+static int do_tpm2_startup(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ enum tpm2_startup_types mode;
+
+ if (argc != 2)
+ return CMD_RET_USAGE;
+
+ if (!strcasecmp("TPM2_SU_CLEAR", argv[1])) {
+ mode = TPM2_SU_CLEAR;
+ } else if (!strcasecmp("TPM2_SU_STATE", argv[1])) {
+ mode = TPM2_SU_STATE;
+ } else {
+ printf("Couldn't recognize mode string: %s\n", argv[1]);
+ return CMD_RET_FAILURE;
+ }
+
+ return report_return_code(tpm2_startup(mode));
+}
+
static cmd_tbl_t tpm2_commands[] = {
U_BOOT_CMD_MKENT(info, 0, 1, do_tpm_info, "", ""),
U_BOOT_CMD_MKENT(init, 0, 1, do_tpm_init, "", ""),
+ U_BOOT_CMD_MKENT(startup, 0, 1, do_tpm2_startup, "", ""),
};
cmd_tbl_t *get_tpm_commands(unsigned int *size)
@@ -30,4 +51,9 @@
" Show information about the TPM.\n"
"init\n"
" Initialize the software stack. Always the first command to issue.\n"
+"startup <mode>\n"
+" Issue a TPM2_Startup command.\n"
+" <mode> is one of:\n"
+" * TPM2_SU_CLEAR (reset state)\n"
+" * TPM2_SU_STATE (preserved state)\n"
);