diff options
Diffstat (limited to 'cmd')
| -rw-r--r-- | cmd/tpm-v2.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/cmd/tpm-v2.c b/cmd/tpm-v2.c index 885bb0591f..6f34987037 100644 --- a/cmd/tpm-v2.c +++ b/cmd/tpm-v2.c @@ -51,11 +51,35 @@ static int do_tpm2_self_test(cmd_tbl_t *cmdtp, int flag, int argc, return report_return_code(tpm2_self_test(full_test)); } +static int do_tpm2_clear(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + u32 handle = 0; + const char *pw = (argc < 3) ? NULL : argv[2]; + const ssize_t pw_sz = pw ? strlen(pw) : 0; + + if (argc < 2 || argc > 3) + return CMD_RET_USAGE; + + if (pw_sz > TPM2_DIGEST_LEN) + return -EINVAL; + + if (!strcasecmp("TPM2_RH_LOCKOUT", argv[1])) + handle = TPM2_RH_LOCKOUT; + else if (!strcasecmp("TPM2_RH_PLATFORM", argv[1])) + handle = TPM2_RH_PLATFORM; + else + return CMD_RET_USAGE; + + return report_return_code(tpm2_clear(handle, pw, pw_sz)); +} + 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, "", ""), U_BOOT_CMD_MKENT(self_test, 0, 1, do_tpm2_self_test, "", ""), + U_BOOT_CMD_MKENT(clear, 0, 1, do_tpm2_clear, "", ""), }; cmd_tbl_t *get_tpm_commands(unsigned int *size) @@ -82,4 +106,9 @@ U_BOOT_CMD(tpm, CONFIG_SYS_MAXARGS, 1, do_tpm, "Issue a TPMv2.x command", " <type> is one of:\n" " * full (perform all tests)\n" " * continue (only check untested tests)\n" +"clear <hierarchy>\n" +" Issue a TPM2_Clear command.\n" +" <hierarchy> is one of:\n" +" * TPM2_RH_LOCKOUT\n" +" * TPM2_RH_PLATFORM\n" ); |