diff options
Diffstat (limited to 'resources/utilities/ich9deblob/common/x86compatibility.c')
| -rw-r--r-- | resources/utilities/ich9deblob/common/x86compatibility.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/resources/utilities/ich9deblob/common/x86compatibility.c b/resources/utilities/ich9deblob/common/x86compatibility.c deleted file mode 100644 index 505a37d..0000000 --- a/resources/utilities/ich9deblob/common/x86compatibility.c +++ /dev/null @@ -1,171 +0,0 @@ -/* - * x86compatibility.c - * This file is part of the ich9deblob utility from the libreboot project - * - * Purpose: compiler/cpu compatibility checks. ich9deblob is not portable, yet. - * - * Copyright (C) 2014 Steve Shenton <sgsit@libreboot.org> - * Francis Rowe <info@gluglug.org.uk> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include "x86compatibility.h" - -/* - * --------------------------------------------------------------------- - * x86 compatibility checking: - * --------------------------------------------------------------------- - */ - -/* fail if struct size is incorrect */ -int structSizesIncorrect(struct DESCRIPTORREGIONRECORD descriptorDummy, struct GBEREGIONRECORD_8K gbe8kDummy) -{ - unsigned int descriptorRegionStructSize = sizeof(descriptorDummy); - unsigned int gbeRegion8kStructSize = sizeof(gbe8kDummy); - - /* check compiler bit-packs in a compatible way. basically, it is expected that this code will be used on x86 */ - if (DESCRIPTORREGIONSIZE != descriptorRegionStructSize){ - printf("\nerror: compiler incompatibility: descriptor struct length is %i bytes (should be %i)\n", descriptorRegionStructSize, DESCRIPTORREGIONSIZE); - return 1; - } - if (GBEREGIONSIZE_8K != gbeRegion8kStructSize){ - printf("\nerror: compiler incompatibility: gbe struct length is %i bytes (should be %i)\n", gbeRegion8kStructSize, GBEREGIONSIZE_8K); - return 1; - } - - return 0; -} - -/* endianness check. big endian forced to fail */ -int systemIsBigEndian() -{ - unsigned short steak = 0xBEEF; - unsigned char *grill = (unsigned char*)&steak; - - if (*grill==0xBE) { - printf("\nunsigned short 0xBEEF: first byte should be EF, but it's BE. Your system is big endian, and unsupported (only little endian is tested)\n"); - return 1; - } - return 0; /* you got the good half of the steak */ -} - -/* fail if members are presented in the wrong order */ -int structMembersWrongOrder() -{ - int i; - struct DESCRIPTORREGIONRECORD descriptorDummy; - unsigned char *meVsccTablePtr = (unsigned char*)&descriptorDummy.meVsccTable; - - /* These do not use bitfields. */ - descriptorDummy.meVsccTable.jid0 = 0x01020304; /* unsigned int 32-bit */ - descriptorDummy.meVsccTable.vscc0 = 0x10203040; /* unsigned int 32-bit */ - descriptorDummy.meVsccTable.jid1 = 0x11223344; /* unsigned int 32-bit */ - descriptorDummy.meVsccTable.vscc1 = 0x05060708; /* unsigned int 32-bit */ - descriptorDummy.meVsccTable.jid2 = 0x50607080; /* unsigned int 32-bit */ - descriptorDummy.meVsccTable.vscc2 = 0x55667788; /* unsigned int 32-bit */ - descriptorDummy.meVsccTable.padding[0] = 0xAA; /* unsigned char 8-bit */ - descriptorDummy.meVsccTable.padding[1] = 0xBB; /* unsigned char 8-bit */ - descriptorDummy.meVsccTable.padding[2] = 0xCC; /* unsigned char 8-bit */ - descriptorDummy.meVsccTable.padding[3] = 0xDD; /* unsigned char 8-bit */ - - /* - * Look from the top down, and concatenate the unsigned ints but - * with each unsigned in little endian order. - * Then, concatenate the unsigned chars in big endian order. (in the padding array) - * - * combined, these should become: - * 01020304 10203040 11223344 05060708 50607080 55667788 AA BB CC DD (ignore this. big endian. just working it out manually:) - * 04030201 40302010 44332211 08070605 80706050 88776655 AA BB CC DD (ignore this. not byte-separated, just working it out:) - * 04 03 02 01 40 30 20 10 44 33 22 11 08 07 06 05 80 70 60 50 88 77 66 55 AA BB CC DD <-- it should match this - */ - - if ( - ! - ( - *meVsccTablePtr == 0x04 && *(meVsccTablePtr+1) == 0x03 && *(meVsccTablePtr+2) == 0x02 && *(meVsccTablePtr+3) == 0x01 - && *(meVsccTablePtr+4) == 0x40 && *(meVsccTablePtr+5) == 0x30 && *(meVsccTablePtr+6) == 0x20 && *(meVsccTablePtr+7) == 0x10 - && *(meVsccTablePtr+8) == 0x44 && *(meVsccTablePtr+9) == 0x33 && *(meVsccTablePtr+10) == 0x22 && *(meVsccTablePtr+11) == 0x11 - && *(meVsccTablePtr+12) == 0x08 && *(meVsccTablePtr+13) == 0x07 && *(meVsccTablePtr+14) == 0x06 && *(meVsccTablePtr+15) == 0x05 - && *(meVsccTablePtr+16) == 0x80 && *(meVsccTablePtr+17) == 0x70 && *(meVsccTablePtr+18) == 0x60 && *(meVsccTablePtr+19) == 0x50 - && *(meVsccTablePtr+20) == 0x88 && *(meVsccTablePtr+21) == 0x77 && *(meVsccTablePtr+22) == 0x66 && *(meVsccTablePtr+23) == 0x55 - && *(meVsccTablePtr+24) == 0xAA && *(meVsccTablePtr+25) == 0xBB && *(meVsccTablePtr+26) == 0xCC && *(meVsccTablePtr+27) == 0xDD - ) - ) { - - printf("\nStruct member order check (descriptorDummy.meVsccTable) with junk/dummy data:"); - printf("\nShould be: 04 03 02 01 40 30 20 10 44 33 22 11 08 07 06 05 80 70 60 50 88 77 66 55 aa bb cc dd "); - printf("\nAnd it is: "); - - for (i = 0; i < 28; i++) { - printf("%02x ", *(meVsccTablePtr + i)); - } - printf("\nIncorrect order.\n"); - - return 1; - } - - return 0; -} - -/* fail if bit fields are presented in the wrong order */ -int structBitfieldWrongOrder() -{ - int i; - struct DESCRIPTORREGIONRECORD descriptorDummy; - unsigned char *flMap0Ptr = (unsigned char*)&descriptorDummy.flMaps.flMap0; - - descriptorDummy.flMaps.flMap0.FCBA = 0xA2; /* :8 --> 10100010 */ - descriptorDummy.flMaps.flMap0.NC = 0x02; /* :2 --> 10 */ - descriptorDummy.flMaps.flMap0.reserved1 = 0x38; /* :6 --> 111000 */ - descriptorDummy.flMaps.flMap0.FRBA = 0xD2; /* :8 --> 11010010 */ - descriptorDummy.flMaps.flMap0.NR = 0x05; /* :3 --> 101 */ - descriptorDummy.flMaps.flMap0.reserved2 = 0x1C; /* :5 --> 11100 */ - - /* - * Look from the top bottom up, and concatenate the binary strings. - * Then, convert the 8-bit groups to hex and reverse the (8-bit)byte order - * - * combined, these should become (in memory), in binary: - * 10100010 11100010 11010010 11100101 - * or in hex: - * A2 E2 D2 E5 - */ - - if (!(*flMap0Ptr == 0xA2 && *(flMap0Ptr+1) == 0xE2 && *(flMap0Ptr+2) == 0xD2 && *(flMap0Ptr+3) == 0xE5)) - { - printf("\nBitfield order check (descriptorDummy.flMaps.flMaps0) with junk/dummy data:"); - printf("\nShould be: a2 e2 d2 e5 "); - printf("\nAnd it is: "); - - for (i = 0; i < 4; i++) { - printf("%02x ", *(flMap0Ptr + i)); - } - printf("\nIncorrect order.\n"); - - return 1; - } - - return 0; -} - -/* Compatibility checks. This version of ich9deblob is not yet porable. */ -int systemOrCompilerIncompatible(struct DESCRIPTORREGIONRECORD descriptorStruct, struct GBEREGIONRECORD_8K gbeStruct8k) -{ - if (structSizesIncorrect(descriptorStruct, gbeStruct8k)) return 1; - if (systemIsBigEndian()) return 1; - if (structBitfieldWrongOrder()) return 1; - if (structMembersWrongOrder()) return 1; - return 0; -} |