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09e574831b
Add a driver for a firmware TPM running inside TEE. Documentation of the firmware TPM: https://www.microsoft.com/en-us/research/publication/ftpm-software-implementation-tpm-chip/ . Implementation of the firmware TPM: https://github.com/Microsoft/ms-tpm-20-ref/tree/master/Samples/ARM32-FirmwareTPM Tested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Tested-by: Thirupathaiah Annapureddy <thiruan@microsoft.com> Signed-off-by: Thirupathaiah Annapureddy <thiruan@microsoft.com> Co-authored-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
40 lines
1 KiB
C
40 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) Microsoft Corporation
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*/
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#ifndef __TPM_FTPM_TEE_H__
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#define __TPM_FTPM_TEE_H__
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#include <linux/tee_drv.h>
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#include <linux/tpm.h>
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#include <linux/uuid.h>
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/* The TAFs ID implemented in this TA */
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#define FTPM_OPTEE_TA_SUBMIT_COMMAND (0)
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#define FTPM_OPTEE_TA_EMULATE_PPI (1)
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/* max. buffer size supported by fTPM */
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#define MAX_COMMAND_SIZE 4096
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#define MAX_RESPONSE_SIZE 4096
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/**
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* struct ftpm_tee_private - fTPM's private data
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* @chip: struct tpm_chip instance registered with tpm framework.
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* @state: internal state
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* @session: fTPM TA session identifier.
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* @resp_len: cached response buffer length.
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* @resp_buf: cached response buffer.
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* @ctx: TEE context handler.
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* @shm: Memory pool shared with fTPM TA in TEE.
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*/
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struct ftpm_tee_private {
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struct tpm_chip *chip;
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u32 session;
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size_t resp_len;
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u8 resp_buf[MAX_RESPONSE_SIZE];
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struct tee_context *ctx;
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struct tee_shm *shm;
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};
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#endif /* __TPM_FTPM_TEE_H__ */
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