c9b7d1fb57
Until now the TCPA log wasn't working correctly. * Refactor TCPA log code. * Add TCPA log dump fucntion. * Make TCPA log available in bootblock. * Fix TCPA log formatting. * Add x86 and Cavium memory for early log. Change-Id: Ic93133531b84318f48940d34bded48cbae739c44 Signed-off-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/29563 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Copyright 2018 Facebook Inc.
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* Copyright 2018 Siemens AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef TSPI_H_
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#define TSPI_H_
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#include <security/tpm/tss.h>
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#include <commonlib/tcpa_log_serialized.h>
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#include <commonlib/region.h>
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#include <vb2_api.h>
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#define TPM_PCR_MAX_LEN 64
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#define HASH_DATA_CHUNK_SIZE 1024
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/**
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* Clears the pre-RAM tcpa log data and initializes
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* any content with default values
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*/
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void tcpa_preram_log_clear(void);
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/**
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* Add table entry for cbmem TCPA log.
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* @param name Name of the hashed data
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* @param pcr PCR used to extend hashed data
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* @param diget_algo sets the digest algorithm
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* @param digest sets the hash extended into the tpm
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* @param digest_len the length of the digest
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*/
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void tcpa_log_add_table_entry(const char *name, const uint32_t pcr,
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enum vb2_hash_algorithm digest_algo,
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const uint8_t *digest,
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const size_t digest_len);
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/**
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* Dump TCPA log entries on console
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*/
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void tcpa_log_dump(void *unused);
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/**
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* Ask vboot for a digest and extend a TPM PCR with it.
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* @param pcr sets the pcr index
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* @param diget_algo sets the digest algorithm
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* @param digest sets the hash to extend into the tpm
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* @param digest_len the length of the digest
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* @param name sets additional info where the digest comes from
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* @return TPM_SUCCESS on success. If not a tpm error is returned
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*/
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uint32_t tpm_extend_pcr(int pcr, enum vb2_hash_algorithm digest_algo,
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uint8_t *digest, size_t digest_len,
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const char *name);
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/**
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* Issue a TPM_Clear and reenable/reactivate the TPM.
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* @return TPM_SUCCESS on success. If not a tpm error is returned
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*/
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uint32_t tpm_clear_and_reenable(void);
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/**
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* Start the TPM and establish the root of trust.
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* @param s3flag tells the tpm setup if we wake up from a s3 state on x86
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* @return TPM_SUCCESS on success. If not a tpm error is returned
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*/
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uint32_t tpm_setup(int s3flag);
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/**
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* Measure a given region device and extend given PCR with the result.
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* @param *rdev Pointer to the region device to measure
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* @param pcr Index of the PCR which will be extended by this measure
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* @param *rname Name of the region that is measured
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* @return TPM error code in case of error otherwise TPM_SUCCESS
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*/
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uint32_t tpm_measure_region(const struct region_device *rdev, uint8_t pcr,
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const char *rname);
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#endif /* TSPI_H_ */
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