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| Source at commit 214 created 13 years 5 months ago. By ifabio, update to chameleon trunk 630, and now the pakage folder is the same as blackosx branch, also add Icon "building" into buildpkg script, and add mint theme info into the English localizable.strings. | |
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| 1 | /*! @file efi_tables.c␊ |
| 2 | Copyright 2007 David F. Elliott. All rights reserved.␊ |
| 3 | */␊ |
| 4 | #include "libsa.h"␊ |
| 5 | #include "efi_tables.h"␊ |
| 6 | ␊ |
| 7 | ␊ |
| 8 | /*==========================================================================␊ |
| 9 | * CRC32 implementation copied from xnu in turn copied from Gary S. Brown.␊ |
| 10 | */␊ |
| 11 | ␊ |
| 12 | /*-␊ |
| 13 | * COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or␊ |
| 14 | * code or tables extracted from it, as desired without restriction.␊ |
| 15 | *␊ |
| 16 | * First, the polynomial itself and its table of feedback terms. The␊ |
| 17 | * polynomial is␊ |
| 18 | * X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0␊ |
| 19 | *␊ |
| 20 | * Note that we take it "backwards" and put the highest-order term in␊ |
| 21 | * the lowest-order bit. The X^32 term is "implied"; the LSB is the␊ |
| 22 | * X^31 term, etc. The X^0 term (usually shown as "+1") results in␊ |
| 23 | * the MSB being 1␊ |
| 24 | *␊ |
| 25 | * Note that the usual hardware shift register implementation, which␊ |
| 26 | * is what we're using (we're merely optimizing it by doing eight-bit␊ |
| 27 | * chunks at a time) shifts bits into the lowest-order term. In our␊ |
| 28 | * implementation, that means shifting towards the right. Why do we␊ |
| 29 | * do it this way? Because the calculated CRC must be transmitted in␊ |
| 30 | * order from highest-order term to lowest-order term. UARTs transmit␊ |
| 31 | * characters in order from LSB to MSB. By storing the CRC this way␊ |
| 32 | * we hand it to the UART in the order low-byte to high-byte; the UART␊ |
| 33 | * sends each low-bit to hight-bit; and the result is transmission bit␊ |
| 34 | * by bit from highest- to lowest-order term without requiring any bit␊ |
| 35 | * shuffling on our part. Reception works similarly␊ |
| 36 | *␊ |
| 37 | * The feedback terms table consists of 256, 32-bit entries. Notes␊ |
| 38 | *␊ |
| 39 | * The table can be generated at runtime if desired; code to do so␊ |
| 40 | * is shown later. It might not be obvious, but the feedback␊ |
| 41 | * terms simply represent the results of eight shift/xor opera␊ |
| 42 | * tions for all combinations of data and CRC register values␊ |
| 43 | *␊ |
| 44 | * The values must be right-shifted by eight bits by the "updcrc␊ |
| 45 | * logic; the shift must be unsigned (bring in zeroes). On some␊ |
| 46 | * hardware you could probably optimize the shift in assembler by␊ |
| 47 | * using byte-swap instructions␊ |
| 48 | * polynomial $edb88320␊ |
| 49 | *␊ |
| 50 | *␊ |
| 51 | * CRC32 code derived from work by Gary S. Brown.␊ |
| 52 | */␊ |
| 53 | ␊ |
| 54 | static uint32_t crc32_tab[] = {␊ |
| 55 | ␉0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,␊ |
| 56 | ␉0xe963a535, 0x9e6495a3,␉0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,␊ |
| 57 | ␉0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,␊ |
| 58 | ␉0xf3b97148, 0x84be41de,␉0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,␊ |
| 59 | ␉0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,␉0x14015c4f, 0x63066cd9,␊ |
| 60 | ␉0xfa0f3d63, 0x8d080df5,␉0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,␊ |
| 61 | ␉0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,␉0x35b5a8fa, 0x42b2986c,␊ |
| 62 | ␉0xdbbbc9d6, 0xacbcf940,␉0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,␊ |
| 63 | ␉0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,␊ |
| 64 | ␉0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,␊ |
| 65 | ␉0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,␉0x76dc4190, 0x01db7106,␊ |
| 66 | ␉0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,␊ |
| 67 | ␉0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,␊ |
| 68 | ␉0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,␊ |
| 69 | ␉0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,␊ |
| 70 | ␉0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,␊ |
| 71 | ␉0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,␊ |
| 72 | ␉0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,␊ |
| 73 | ␉0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,␊ |
| 74 | ␉0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,␊ |
| 75 | ␉0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,␊ |
| 76 | ␉0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,␊ |
| 77 | ␉0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,␊ |
| 78 | ␉0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,␊ |
| 79 | ␉0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,␊ |
| 80 | ␉0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,␊ |
| 81 | ␉0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,␊ |
| 82 | ␉0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,␊ |
| 83 | ␉0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,␊ |
| 84 | ␉0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,␊ |
| 85 | ␉0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,␊ |
| 86 | ␉0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,␊ |
| 87 | ␉0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,␊ |
| 88 | ␉0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,␊ |
| 89 | ␉0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,␊ |
| 90 | ␉0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,␊ |
| 91 | ␉0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,␊ |
| 92 | ␉0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,␊ |
| 93 | ␉0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,␊ |
| 94 | ␉0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,␊ |
| 95 | ␉0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,␊ |
| 96 | ␉0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,␊ |
| 97 | ␉0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d␊ |
| 98 | };␊ |
| 99 | ␊ |
| 100 | uint32_t crc32(uint32_t crc, const void *buf, size_t size)␊ |
| 101 | {␊ |
| 102 | ␉const uint8_t *p;␊ |
| 103 | ␊ |
| 104 | ␉p = buf;␊ |
| 105 | ␉crc = crc ^ ~0U;␊ |
| 106 | ␊ |
| 107 | ␉while (size--)␊ |
| 108 | ␉␉crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);␊ |
| 109 | ␊ |
| 110 | ␉return crc ^ ~0U;␊ |
| 111 | }␊ |
| 112 | ␊ |
| 113 | ␊ |
| 114 | /*==========================================================================␊ |
| 115 | * Utility function to make a device tree string from an EFI_GUID␊ |
| 116 | */␊ |
| 117 | ␊ |
| 118 | void efi_guid_unparse_upper(EFI_GUID const *pGuid, char *out)␊ |
| 119 | {␊ |
| 120 | sprintf(out, "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",␊ |
| 121 | pGuid->Data1, /* - */␊ |
| 122 | pGuid->Data2, /* - */␊ |
| 123 | pGuid->Data3, /* - */␊ |
| 124 | pGuid->Data4[0], pGuid->Data4[1], /* - */␊ |
| 125 | pGuid->Data4[2], pGuid->Data4[3],␊ |
| 126 | pGuid->Data4[4], pGuid->Data4[5],␊ |
| 127 | pGuid->Data4[6], pGuid->Data4[7]);␊ |
| 128 | }␊ |
| 129 | ␊ |
| 130 | bool efi_guid_is_null(EFI_GUID const *pGuid)␊ |
| 131 | {␊ |
| 132 | if(pGuid->Data1 == 0 && pGuid->Data2 == 0 && pGuid->Data3 == 0)␊ |
| 133 | {␊ |
| 134 | int i;␊ |
| 135 | for(i=0; i<8; ++i)␊ |
| 136 | {␊ |
| 137 | if(pGuid->Data4[i] != 0)␊ |
| 138 | return false;␊ |
| 139 | }␊ |
| 140 | return true;␊ |
| 141 | }␊ |
| 142 | return false;␊ |
| 143 | }␊ |
| 144 | ␊ |
| 145 | #define COMPARE_MEMBER_AND_RETURN_IF_NE(a,b,mem) \␊ |
| 146 | if( ((a)->mem) < ((b)->mem) ) \␊ |
| 147 | return -1; \␊ |
| 148 | else if( ((a)->mem) > ((b)->mem) ) \␊ |
| 149 | return 1;␊ |
| 150 | ␊ |
| 151 | int efi_guid_compare(EFI_GUID const *pG1, EFI_GUID const *pG2)␊ |
| 152 | {␊ |
| 153 | COMPARE_MEMBER_AND_RETURN_IF_NE(pG1, pG2, Data1);␊ |
| 154 | COMPARE_MEMBER_AND_RETURN_IF_NE(pG1, pG2, Data2);␊ |
| 155 | COMPARE_MEMBER_AND_RETURN_IF_NE(pG1, pG2, Data3);␊ |
| 156 | int i;␊ |
| 157 | for(i=0; i<8; ++i)␊ |
| 158 | {␊ |
| 159 | COMPARE_MEMBER_AND_RETURN_IF_NE(pG1, pG2, Data4[i]);␊ |
| 160 | }␊ |
| 161 | return 0;␊ |
| 162 | }␊ |
| 163 | |
