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Matthew Fioravante
e1a53273fc
This patch adds 3 new drivers to mini-os. tpmfront - paravirtualized tpm frontend driver tpmback - paravirtualized tpm backend driver tpm_tis - hardware tpm driver Unfortunately these drivers were derived from GPL licensed linux kernel drivers so they must carry the GPL license. However, since mini-os now supports conditional compilation, hopefully these drivers can be included into the xen tree and conditionally removed from non-gpl projects. By default they are disabled in the makefile. Signed-off-by: Matthew Fioravante <matthew.fioravante@jhuapl.edu> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/*
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* Copyright (c) 2010-2012 United States Government, as represented by
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* the Secretary of Defense. All rights reserved.
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*
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* This code has been derived from drivers/char/tpm.c
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* from the linux kernel
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*
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* Copyright (C) 2004 IBM Corporation
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*
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* This code has also been derived from drivers/char/tpm/tpm_tis.c
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* from the linux kernel
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*
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* Copyright (C) 2005, 2006 IBM Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2
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* of the License
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*/
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#ifndef TPM_TIS_H
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#define TPM_TIS_H
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#include <mini-os/types.h>
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#include <mini-os/byteorder.h>
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#define TPM_TIS_EN_LOCL0 1
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#define TPM_TIS_EN_LOCL1 (1 << 1)
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#define TPM_TIS_EN_LOCL2 (1 << 2)
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#define TPM_TIS_EN_LOCL3 (1 << 3)
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#define TPM_TIS_EN_LOCL4 (1 << 4)
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#define TPM_TIS_EN_LOCLALL (TPM_TIS_EN_LOCL0 | TPM_TIS_EN_LOCL1 | TPM_TIS_EN_LOCL2 | TPM_TIS_EN_LOCL3 | TPM_TIS_EN_LOCL4)
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#define TPM_TIS_LOCL_INT_TO_FLAG(x) (1 << x)
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#define TPM_BASEADDR 0xFED40000
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#define TPM_PROBE_IRQ 0xFFFF
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struct tpm_chip;
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struct tpm_chip* init_tpm_tis(unsigned long baseaddr, int localities, unsigned int irq);
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void shutdown_tpm_tis(struct tpm_chip* tpm);
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int tpm_tis_request_locality(struct tpm_chip* tpm, int locality);
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int tpm_tis_cmd(struct tpm_chip* tpm, uint8_t* req, size_t reqlen, uint8_t** resp, size_t* resplen);
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#ifdef HAVE_LIBC
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#include <sys/stat.h>
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#include <fcntl.h>
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/* POSIX IO functions:
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* use tpm_tis_open() to get a file descriptor to the tpm device
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* use write() on the fd to send a command to the backend. You must
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* include the entire command in a single call to write().
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* use read() on the fd to read the response. You can use
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* fstat() to get the size of the response and lseek() to seek on it.
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*/
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int tpm_tis_open(struct tpm_chip* tpm);
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int tpm_tis_posix_read(int fd, uint8_t* buf, size_t count);
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int tpm_tis_posix_write(int fd, const uint8_t* buf, size_t count);
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int tpm_tis_posix_fstat(int fd, struct stat* buf);
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#endif
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#endif
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