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tpm: add TPM2_SelfTest command support

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Add support for the TPM2_Selftest 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>
This commit is contained in:
Miquel Raynal 2018-05-15 11:57:13 +02:00 • committed by Tom Rini
parent 1922df2010
commit 2dc6d97e1e
3 changed files with 47 additions and 0 deletions
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26
cmd/tpm-v2.c
View file

@ -31,10 +31,31 @@ static int do_tpm2_startup(cmd_tbl_t *cmdtp, int flag, int argc,
return report_return_code(tpm2_startup(mode));
}
static int do_tpm2_self_test(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
enum tpm2_yes_no full_test;
if (argc != 2)
return CMD_RET_USAGE;
if (!strcasecmp("full", argv[1])) {
full_test = TPMI_YES;
} else if (!strcasecmp("continue", argv[1])) {
full_test = TPMI_NO;
} else {
printf("Couldn't recognize test mode: %s\n", argv[1]);
return CMD_RET_FAILURE;
}
return report_return_code(tpm2_self_test(full_test));
}
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, "", ""),
};
cmd_tbl_t *get_tpm_commands(unsigned int *size)
@ -56,4 +77,9 @@ U_BOOT_CMD(tpm, CONFIG_SYS_MAXARGS, 1, do_tpm, "Issue a TPMv2.x command",
" <mode> is one of:\n"
" * TPM2_SU_CLEAR (reset state)\n"
" * TPM2_SU_STATE (preserved state)\n"
"self_test <type>\n"
" Test the TPM capabilities.\n"
" <type> is one of:\n"
" * full (perform all tests)\n"
" * continue (only check untested tests)\n"
);

9
include/tpm-v2.h
View file

@ -134,4 +134,13 @@ enum tpm2_algorithms {
*/
u32 tpm2_startup(enum tpm2_startup_types mode);
/**
* Issue a TPM2_SelfTest command.
*
* @full_test Asking to perform all tests or only the untested ones
*
* @return code of the operation
*/
u32 tpm2_self_test(enum tpm2_yes_no full_test);
#endif /* __TPM_V2_H */

12
lib/tpm-v2.c
View file

@ -30,3 +30,15 @@ u32 tpm2_startup(enum tpm2_startup_types mode)
return 0;
}
u32 tpm2_self_test(enum tpm2_yes_no full_test)
{
const u8 command_v2[12] = {
tpm_u16(TPM2_ST_NO_SESSIONS),
tpm_u32(11),
tpm_u32(TPM2_CC_SELF_TEST),
full_test,
};
return tpm_sendrecv_command(command_v2, NULL, NULL);
}