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36e3d877cd
Add tpm2 drivers to tf-a with adequate framework -implement a fifo spi interface that works with discrete tpm chip. -implement tpm command layer interfaces that are used to initialize, start and make measurements and close the interface. -tpm drivers are built using their own make file to allow for ease in porting across platforms, and across different interfaces. Signed-off-by: Tushar Khandelwal <tushar.khandelwal@arm.com> Signed-off-by: Abhi Singh <abhi.singh@arm.com> Change-Id: Ie1a189f45c80f26f4dea16c3bd71b1503709e0ea
28 lines
898 B
C
28 lines
898 B
C
/*
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* Copyright (c) 2025, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef TPM2_INTERFACE_H
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#define TPM2_INTERFACE_H
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#include "tpm2_chip.h"
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typedef struct interface_ops {
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int (*get_info)(struct tpm_chip_data *chip_data, uint8_t locality);
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int (*send)(struct tpm_chip_data *chip_data, const tpm_cmd *buf);
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int (*receive)(struct tpm_chip_data *chip_data, tpm_cmd *buf);
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int (*request_access)(struct tpm_chip_data *chip_data, uint8_t locality);
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int (*release_locality)(struct tpm_chip_data *chip_data, uint8_t locality);
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} interface_ops_t;
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struct interface_ops *tpm_interface_getops(struct tpm_chip_data *chip_data, uint8_t locality);
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int tpm2_fifo_write_byte(uint16_t tpm_reg, uint8_t val);
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int tpm2_fifo_read_byte(uint16_t tpm_reg, uint8_t *val);
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int tpm2_fifo_read_chunk(uint16_t tpm_reg, uint8_t len, void *val);
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#endif /* TPM2_INTERFACE_H */
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