As every TPM drivers support UCLASS_TPM, we can only rely on DM_TPM functions. This simplify a bit the code. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Reviewed-by: Tom Rini <trini@konsulko.com> Acked-by: Simon Glass <sjg@chromium.org>master
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/*
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* Copyright (c) 2011 The Chromium OS Authors. |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef __TIS_H |
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#define __TIS_H |
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#ifndef CONFIG_DM_TPM |
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#include <common.h> |
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/* Low-level interface to access TPM */ |
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/*
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* tis_init() |
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* |
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* Initialize the TPM device. Returns 0 on success or -1 on |
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* failure (in case device probing did not succeed). |
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*/ |
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int tis_init(void); |
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/*
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* tis_open() |
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* |
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* Requests access to locality 0 for the caller. After all commands have been |
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* completed the caller is supposed to call tis_close(). |
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* |
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* Returns 0 on success, -1 on failure. |
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*/ |
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int tis_open(void); |
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/*
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* tis_close() |
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* |
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* terminate the currect session with the TPM by releasing the locked |
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* locality. Returns 0 on success of -1 on failure (in case lock |
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* removal did not succeed). |
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*/ |
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int tis_close(void); |
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/*
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* tis_sendrecv() |
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* |
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* Send the requested data to the TPM and then try to get its response |
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* |
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* @sendbuf - buffer of the data to send |
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* @send_size size of the data to send |
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* @recvbuf - memory to save the response to |
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* @recv_len - pointer to the size of the response buffer |
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* |
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* Returns 0 on success (and places the number of response bytes at recv_len) |
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* or -1 on failure. |
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*/ |
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int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, uint8_t *recvbuf, |
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size_t *recv_len); |
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#endif |
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#endif /* __TIS_H */ |
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