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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2018 Bootlin
* Author: Miquel Raynal <miquel.raynal@bootlin.com>
*/
#include <common.h>
#include <dm.h>
#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;
}
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