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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2018 Facebook Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __SECURITY_VBOOT_CRTM_H__
#define __SECURITY_VBOOT_CRTM_H__
#include <program_loading.h>
#include <security/tpm/tspi.h>
#include <types.h>
#include <cbfs.h>
/* CRTM */
#define TPM_CRTM_PCR 2
/* PCR for measuring data which changes during runtime
* e.g. CMOS, NVRAM...
*/
#define TPM_RUNTIME_DATA_PCR 3
/*
* Initializes the Core Root of Trust for Measurements
* in coreboot. The initial code in a chain of trust must measure
* itself.
*
* Summary:
* + Measures bootblock in CBFS or BOOTBLOCK FMAP partition.
* + If vboot starts in romstage, it measures the romstage
* in CBFS.
* + Measure the verstage if it is compiled as separate
* stage.
*
* Takes the current vboot context as parameter for s3 checks.
* returns on success VB2_SUCCESS, else a vboot error.
*/
uint32_t vboot_init_crtm(void);
#if (IS_ENABLED(CONFIG_VBOOT_MEASURED_BOOT) && \
!ENV_BOOTBLOCK && !ENV_DECOMPRESSOR && !ENV_SMM)
/*
* Measures cbfs data via hook (cbfs)
* fh is the cbfs file handle to measure
* return 0 if successful, else an error
*/
uint32_t vboot_measure_cbfs_hook(struct cbfsf *fh, const char *name);
#else
#define vboot_measure_cbfs_hook(fh, name) 0
#endif
#endif /* __VBOOT_VBOOT_CRTM_H__ */
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