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https://github.com/ARM-software/arm-trusted-firmware.git
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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
103 lines
2.5 KiB
C
103 lines
2.5 KiB
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_H
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#define TPM2_H
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#include <assert.h>
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#include <endian.h>
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#include <errno.h>
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#include <stdint.h>
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#include <drivers/tpm/tpm2_chip.h>
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/* Return values */
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enum tpm_ret_value {
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TPM_SUCCESS = 0,
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TPM_ERR_RESPONSE = -1,
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TPM_INVALID_PARAM = -2,
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TPM_ERR_TIMEOUT = -3,
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TPM_ERR_TRANSFER = -4,
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};
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/*
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* TPM FIFO register space address offsets
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*/
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#define TPM_FIFO_REG_ACCESS 0x00
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#define TPM_FIFO_REG_INTR_ENABLE 0x08
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#define TPM_FIFO_REG_INTR_VECTOR 0x0C
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#define TPM_FIFO_REG_INTR_STS 0x10
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#define TPM_FIFO_REG_INTF_CAPS 0x14
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#define TPM_FIFO_REG_STATUS 0x18
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#define TPM_FIFO_REG_BURST_COUNT_LO 0x19
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#define TPM_FIFO_REG_BURST_COUNT_HI 0x20
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#define TPM_FIFO_REG_DATA_FIFO 0x24
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#define TPM_FIFO_REG_VENDID 0xF00
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#define TPM_FIFO_REG_DEVID 0xF02
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#define TPM_FIFO_REG_REVID 0xF04
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#define TPM_ST_NO_SESSIONS U(0x8001)
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#define TPM_ST_SESSIONS U(0x8002)
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#define TPM_SU_CLEAR U(0x0000)
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#define TPM_SU_STATE U(0x0001)
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#define TPM_MIN_AUTH_SIZE 9
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#define TPM_RS_PW 0x40000009
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#define TPM_ZERO_NONCE_SIZE 0
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#define TPM_ATTRIBUTES_DISABLE 0
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#define TPM_ZERO_HMAC_SIZE 0
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#define TPM_SINGLE_HASH_COUNT 1
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#define TPM_CMD_STARTUP U(0x0144)
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#define TPM_CMD_PCR_READ U(0x017E)
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#define TPM_CMD_PCR_EXTEND U(0x0182)
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#define TPM_RESPONSE_SUCCESS U(0x0000)
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#define TPM_ACCESS_ACTIVE_LOCALITY U(1 << 5)
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#define TPM_ACCESS_VALID U(1 << 7)
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#define TPM_ACCESS_RELINQUISH_LOCALITY U(1 << 5)
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#define TPM_ACCESS_REQUEST_USE U(1 << 1)
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#define TPM_ACCESS_REQUEST_PENDING U(1 << 2)
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#define TPM_STAT_VALID U(1 << 7)
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#define TPM_STAT_COMMAND_READY U(1 << 6)
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#define TPM_STAT_GO U(1 << 5)
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#define TPM_STAT_AVAIL U(1 << 4)
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#define TPM_STAT_EXPECT U(1 << 3)
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#define TPM_READ_HEADER -1
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#define TPM_HEADER_SIZE 10
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#define MAX_SIZE_CMDBUF 256
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#define MAX_CMD_DATA (MAX_SIZE_CMDBUF - TPM_HEADER_SIZE)
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#pragma pack(1)
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typedef struct tpm_cmd_hdr {
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uint16_t tag;
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uint32_t cmd_size;
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uint32_t cmd_code;
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} tpm_cmd_hdr;
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typedef struct tpm_cmd {
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tpm_cmd_hdr header;
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uint8_t data[MAX_CMD_DATA];
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} tpm_cmd;
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#pragma pack()
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int tpm_interface_init(struct tpm_chip_data *chip_data, uint8_t locality);
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int tpm_interface_close(struct tpm_chip_data *chip_data, uint8_t locality);
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int tpm_startup(struct tpm_chip_data *chip_data, uint16_t mode);
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int tpm_pcr_extend(struct tpm_chip_data *chip_data, uint32_t index,
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uint16_t algorithm, const uint8_t *digest,
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uint32_t digest_len);
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#endif /* TPM2_H */
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