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Diffstat (limited to 'src/tpm12/tpm_platform.c')
| -rw-r--r-- | src/tpm12/tpm_platform.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/tpm12/tpm_platform.c b/src/tpm12/tpm_platform.c new file mode 100644 index 0000000..16da5db --- /dev/null +++ b/src/tpm12/tpm_platform.c @@ -0,0 +1,175 @@ +/********************************************************************************/ +/* */ +/* TPM Platform I/O */ +/* Written by Ken Goldman */ +/* IBM Thomas J. Watson Research Center */ +/* $Id: tpm_platform.c 4621 2011-09-09 20:19:42Z kgoldman $ */ +/* */ +/* (c) Copyright IBM Corporation 2006, 2010. */ +/* */ +/* All rights reserved. */ +/* */ +/* Redistribution and use in source and binary forms, with or without */ +/* modification, are permitted provided that the following conditions are */ +/* met: */ +/* */ +/* Redistributions of source code must retain the above copyright notice, */ +/* this list of conditions and the following disclaimer. */ +/* */ +/* Redistributions in binary form must reproduce the above copyright */ +/* notice, this list of conditions and the following disclaimer in the */ +/* documentation and/or other materials provided with the distribution. */ +/* */ +/* Neither the names of the IBM Corporation nor the names of its */ +/* contributors may be used to endorse or promote products derived from */ +/* this software without specific prior written permission. */ +/* */ +/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */ +/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */ +/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */ +/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */ +/* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ +/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ +/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */ +/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY */ +/* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */ +/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */ +/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +/********************************************************************************/ + +#include <stdio.h> +#include <string.h> + +#include "tpm_debug.h" +#include "tpm_pcr.h" +#include "tpm_platform.h" + +#ifdef TPM_LIBTPMS_CALLBACKS +#include "tpm_library_intern.h" +#endif + +#ifndef TPM_IO_LOCALITY + +/* TPM_IO_GetLocality() is platform specific code to set the localityModifier before an ordinal is + processed. + + Place holder, to be modified for the platform. +*/ + +TPM_RESULT TPM_IO_GetLocality(TPM_MODIFIER_INDICATOR *localityModifier, + uint32_t tpm_number) +{ + TPM_RESULT rc = 0; + +#ifdef TPM_LIBTPMS_CALLBACKS + struct libtpms_callbacks *cbs = TPMLIB_GetCallbacks(); + + /* call user-provided function if available, otherwise execute + default behavior */ + if (cbs->tpm_io_getlocality) { + rc = cbs->tpm_io_getlocality(localityModifier, tpm_number); + return rc; + } +#else + tpm_number = tpm_number; /* to silence the compiler */ +#endif + + if (rc == 0) { + *localityModifier = 0; + printf(" TPM_IO_GetLocality: localityModifier %u\n", *localityModifier); + rc = TPM_LocalityModifier_CheckLegal(*localityModifier); + } + return rc; +} + +#endif /* TPM_IO_LOCALITY */ + +#ifndef TPM_IO_PHYSICAL_PRESENCE + +/* TPM_IO_GetPhysicalPresence() is platform specific code to get the hardware physicalPresence + state. + + Place holder, to be modified for the platform. +*/ + +TPM_RESULT TPM_IO_GetPhysicalPresence(TPM_BOOL *physicalPresence, + uint32_t tpm_number) +{ + TPM_RESULT rc = 0; + +#ifdef TPM_LIBTPMS_CALLBACKS + struct libtpms_callbacks *cbs = TPMLIB_GetCallbacks(); + + /* call user-provided function if available, otherwise execute + default behavior */ + if (cbs->tpm_io_getphysicalpresence) { + rc = cbs->tpm_io_getphysicalpresence(physicalPresence, tpm_number); + return rc; + } +#else + tpm_number = tpm_number; /* to silence the compiler */ +#endif + *physicalPresence = FALSE; + return rc; +} + +#endif /* TPM_IO_PHYSICAL_PRESENCE */ + +#ifndef TPM_IO_GPIO + +/* TPM_IO_GPIO_Write() should write 'dataSize' bytes of 'data' to 'nvIndex' at the GPIO port. + + Place holder, to be modified for the platform. +*/ + +TPM_RESULT TPM_IO_GPIO_Write(TPM_NV_INDEX nvIndex, + uint32_t dataSize, + BYTE *data, + uint32_t tpm_number) +{ + TPM_RESULT rc = 0; + tpm_number = tpm_number; /* to silence the compiler */ + +#if defined TPM_PCCLIENT /* These values are from the PC Client specification */ + printf(" TPM_IO_GPIO_Write: nvIndex %08x\n", nvIndex); + TPM_PrintAll(" TPM_IO_GPIO_Write: Stub", data, dataSize); + /* #elif Add other platform specific values here */ +#else /* This is the default case for the main specification */ + nvIndex = nvIndex; /* unused parameter, to quiet the compiler */ + dataSize = dataSize; + data = data; + printf("TPM_IO_GPIO_Write: Error (fatal), platform does not support GPIO\n"); + rc = TPM_FAIL; /* Should never get here. The invalid address be detected earlier */ +#endif + return rc; +} + +/* TPM_IO_GPIO_Read() + + Place holder, to be modified for the platform. +*/ + +TPM_RESULT TPM_IO_GPIO_Read(TPM_NV_INDEX nvIndex, + uint32_t dataSize, + BYTE *data, + uint32_t tpm_number) +{ + TPM_RESULT rc = 0; + tpm_number = tpm_number; /* to silence the compiler */ + +#if defined TPM_PCCLIENT /* These values are from the PC Client specification */ + printf(" TPM_IO_GPIO_Read: nvIndex %08x\n", nvIndex); + memset(data, 0, dataSize); + /* #elif Add other platform specific values here */ +#else /* This is the default case for the main specification */ + nvIndex = nvIndex;; /* unused parameter, to quiet the compiler */ + dataSize = dataSize;; + data = data; + printf("TPM_IO_GPIO_Read: Error (fatal), platform does not support GPIO\n"); + rc = TPM_FAIL; /* Should never get here. The invalid address be detected earlier */ +#endif + return rc; +} + +#endif /* TPM_IO_GPIO */ + |