2710df765b
TCPA usually refers to log described by TPM 1.2 specification. Change-Id: I896bd94f18b34d6c4b280f58b011d704df3d4022 Ticket: https://ticket.coreboot.org/issues/423 Signed-off-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/69444 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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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/tpm_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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* Get the pointer to the single instance of global
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* TPM log data, and initialize it when necessary
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*/
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struct tpm_cb_log_table *tpm_log_init(void);
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/**
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* Clears the pre-RAM TPM log data and initializes
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* any content with default values
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*/
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void tpm_preram_log_clear(void);
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/**
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* Add table entry for cbmem TPM 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 tpm_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 TPM log entries on console
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*/
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void tpm_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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const 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 re-enable/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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