^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 1991, 1992 Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 1997 Martin Mares
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2007 H. Peter Anvin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * This file builds a disk-image from three different files:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * - setup: 8086 machine code, sets up system parm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * - system: 80386 code for actual system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * - zoffset.h: header with ZO_* defines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * It does some checking that all files are of the correct type, and writes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * the result to the specified destination, removing headers and padding to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * the right amount. It also writes some system data to stdout.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Changes by tytso to allow root device specification
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Cross compiling fixes by Gertjan van Wingerde, July 1996
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Rewritten by Martin Mares, April 1997
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * Substantially overhauled by H. Peter Anvin, April 2007
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <stdarg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <sys/mman.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <tools/le_byteshift.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) typedef unsigned char u8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) typedef unsigned short u16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) typedef unsigned int u32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define DEFAULT_MAJOR_ROOT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define DEFAULT_MINOR_ROOT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define DEFAULT_ROOT_DEV (DEFAULT_MAJOR_ROOT << 8 | DEFAULT_MINOR_ROOT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /* Minimal number of setup sectors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define SETUP_SECT_MIN 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define SETUP_SECT_MAX 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* This must be large enough to hold the entire setup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u8 buf[SETUP_SECT_MAX*512];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define PECOFF_RELOC_RESERVE 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #ifdef CONFIG_EFI_MIXED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define PECOFF_COMPAT_RESERVE 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define PECOFF_COMPAT_RESERVE 0x0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static unsigned long efi32_stub_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static unsigned long efi64_stub_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static unsigned long efi_pe_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static unsigned long efi32_pe_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static unsigned long kernel_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static unsigned long startup_64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static unsigned long _ehead;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static unsigned long _end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /*----------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static const u32 crctab32[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 0x2d02ef8d
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static u32 partial_crc32_one(u8 c, u32 crc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return crctab32[(crc ^ c) & 0xff] ^ (crc >> 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static u32 partial_crc32(const u8 *s, int len, u32 crc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) while (len--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) crc = partial_crc32_one(*s++, crc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return crc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static void die(const char * str, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) va_start(args, str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) vfprintf(stderr, str, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) fputc('\n', stderr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static void usage(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) die("Usage: build setup system zoffset.h image");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #ifdef CONFIG_EFI_STUB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static void update_pecoff_section_header_fields(char *section_name, u32 vma, u32 size, u32 datasz, u32 offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) unsigned int pe_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) unsigned short num_sections;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) u8 *section;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) pe_header = get_unaligned_le32(&buf[0x3c]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) num_sections = get_unaligned_le16(&buf[pe_header + 6]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #ifdef CONFIG_X86_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) section = &buf[pe_header + 0xa8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) section = &buf[pe_header + 0xb8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) while (num_sections > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (strncmp((char*)section, section_name, 8) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) /* section header size field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) put_unaligned_le32(size, section + 0x8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /* section header vma field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) put_unaligned_le32(vma, section + 0xc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /* section header 'size of initialised data' field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) put_unaligned_le32(datasz, section + 0x10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /* section header 'file offset' field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) put_unaligned_le32(offset, section + 0x14);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) section += 0x28;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) num_sections--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static void update_pecoff_section_header(char *section_name, u32 offset, u32 size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) update_pecoff_section_header_fields(section_name, offset, size, size, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static void update_pecoff_setup_and_reloc(unsigned int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) u32 setup_offset = 0x200;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) u32 reloc_offset = size - PECOFF_RELOC_RESERVE - PECOFF_COMPAT_RESERVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #ifdef CONFIG_EFI_MIXED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) u32 compat_offset = reloc_offset + PECOFF_RELOC_RESERVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) u32 setup_size = reloc_offset - setup_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) update_pecoff_section_header(".setup", setup_offset, setup_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) update_pecoff_section_header(".reloc", reloc_offset, PECOFF_RELOC_RESERVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * Modify .reloc section contents with a single entry. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * relocation is applied to offset 10 of the relocation section.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) put_unaligned_le32(reloc_offset + 10, &buf[reloc_offset]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) put_unaligned_le32(10, &buf[reloc_offset + 4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) #ifdef CONFIG_EFI_MIXED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) update_pecoff_section_header(".compat", compat_offset, PECOFF_COMPAT_RESERVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * Put the IA-32 machine type (0x14c) and the associated entry point
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * address in the .compat section, so loaders can figure out which other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * execution modes this image supports.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) buf[compat_offset] = 0x1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) buf[compat_offset + 1] = 0x8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) put_unaligned_le16(0x14c, &buf[compat_offset + 2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) put_unaligned_le32(efi32_pe_entry + size, &buf[compat_offset + 4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static void update_pecoff_text(unsigned int text_start, unsigned int file_sz,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) unsigned int init_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) unsigned int pe_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) unsigned int text_sz = file_sz - text_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) unsigned int bss_sz = init_sz - file_sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) pe_header = get_unaligned_le32(&buf[0x3c]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * The PE/COFF loader may load the image at an address which is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * misaligned with respect to the kernel_alignment field in the setup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * header.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * In order to avoid relocating the kernel to correct the misalignment,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * add slack to allow the buffer to be aligned within the declared size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * of the image.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) bss_sz += CONFIG_PHYSICAL_ALIGN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) init_sz += CONFIG_PHYSICAL_ALIGN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * Size of code: Subtract the size of the first sector (512 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * which includes the header.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) put_unaligned_le32(file_sz - 512 + bss_sz, &buf[pe_header + 0x1c]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /* Size of image */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) put_unaligned_le32(init_sz, &buf[pe_header + 0x50]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * Address of entry point for PE/COFF executable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) put_unaligned_le32(text_start + efi_pe_entry, &buf[pe_header + 0x28]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) update_pecoff_section_header_fields(".text", text_start, text_sz + bss_sz,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) text_sz, text_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static int reserve_pecoff_reloc_section(int c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) /* Reserve 0x20 bytes for .reloc section */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) memset(buf+c, 0, PECOFF_RELOC_RESERVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return PECOFF_RELOC_RESERVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) static void efi_stub_defaults(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /* Defaults for old kernel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) #ifdef CONFIG_X86_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) efi_pe_entry = 0x10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) efi_pe_entry = 0x210;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) startup_64 = 0x200;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static void efi_stub_entry_update(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) unsigned long addr = efi32_stub_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) #ifdef CONFIG_X86_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /* Yes, this is really how we defined it :( */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) addr = efi64_stub_entry - 0x200;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) #ifdef CONFIG_EFI_MIXED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (efi32_stub_entry != addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) die("32-bit and 64-bit EFI entry points do not match\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) put_unaligned_le32(addr, &buf[0x264]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static inline void update_pecoff_setup_and_reloc(unsigned int size) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) static inline void update_pecoff_text(unsigned int text_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) unsigned int file_sz,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) unsigned int init_sz) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static inline void efi_stub_defaults(void) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static inline void efi_stub_entry_update(void) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) static inline int reserve_pecoff_reloc_section(int c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #endif /* CONFIG_EFI_STUB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static int reserve_pecoff_compat_section(int c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) /* Reserve 0x20 bytes for .compat section */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) memset(buf+c, 0, PECOFF_COMPAT_RESERVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return PECOFF_COMPAT_RESERVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) * Parse zoffset.h and find the entry points. We could just #include zoffset.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * but that would mean tools/build would have to be rebuilt every time. It's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * not as if parsing it is hard...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) #define PARSE_ZOFS(p, sym) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (!strncmp(p, "#define ZO_" #sym " ", 11+sizeof(#sym))) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) sym = strtoul(p + 11 + sizeof(#sym), NULL, 16); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) static void parse_zoffset(char *fname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) FILE *file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) int c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) file = fopen(fname, "r");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (!file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) die("Unable to open `%s': %m", fname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) c = fread(buf, 1, sizeof(buf) - 1, file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (ferror(file))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) die("read-error on `zoffset.h'");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) fclose(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) buf[c] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) p = (char *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) while (p && *p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) PARSE_ZOFS(p, efi32_stub_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) PARSE_ZOFS(p, efi64_stub_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) PARSE_ZOFS(p, efi_pe_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) PARSE_ZOFS(p, efi32_pe_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) PARSE_ZOFS(p, kernel_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) PARSE_ZOFS(p, startup_64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) PARSE_ZOFS(p, _ehead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) PARSE_ZOFS(p, _end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) p = strchr(p, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) while (p && (*p == '\r' || *p == '\n'))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) p++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) int main(int argc, char ** argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) unsigned int i, sz, setup_sectors, init_sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) int c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) u32 sys_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) struct stat sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) FILE *file, *dest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) void *kernel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) u32 crc = 0xffffffffUL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) efi_stub_defaults();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (argc != 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) usage();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) parse_zoffset(argv[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) dest = fopen(argv[4], "w");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (!dest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) die("Unable to write `%s': %m", argv[4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) /* Copy the setup code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) file = fopen(argv[1], "r");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) die("Unable to open `%s': %m", argv[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) c = fread(buf, 1, sizeof(buf), file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (ferror(file))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) die("read-error on `setup'");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (c < 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) die("The setup must be at least 1024 bytes");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) if (get_unaligned_le16(&buf[510]) != 0xAA55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) die("Boot block hasn't got boot flag (0xAA55)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) fclose(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) c += reserve_pecoff_compat_section(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) c += reserve_pecoff_reloc_section(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) /* Pad unused space with zeros */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) setup_sectors = (c + 511) / 512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (setup_sectors < SETUP_SECT_MIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) setup_sectors = SETUP_SECT_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) i = setup_sectors*512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) memset(buf+c, 0, i-c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) update_pecoff_setup_and_reloc(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) /* Set the default root device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) put_unaligned_le16(DEFAULT_ROOT_DEV, &buf[508]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) /* Open and stat the kernel file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) fd = open(argv[2], O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) die("Unable to open `%s': %m", argv[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (fstat(fd, &sb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) die("Unable to stat `%s': %m", argv[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) sz = sb.st_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) kernel = mmap(NULL, sz, PROT_READ, MAP_SHARED, fd, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (kernel == MAP_FAILED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) die("Unable to mmap '%s': %m", argv[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) /* Number of 16-byte paragraphs, including space for a 4-byte CRC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) sys_size = (sz + 15 + 4) / 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) #ifdef CONFIG_EFI_STUB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) * COFF requires minimum 32-byte alignment of sections, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) * adding a signature is problematic without that alignment.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) sys_size = (sys_size + 1) & ~1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) /* Patch the setup code with the appropriate size parameters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) buf[0x1f1] = setup_sectors-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) put_unaligned_le32(sys_size, &buf[0x1f4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) init_sz = get_unaligned_le32(&buf[0x260]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) #ifdef CONFIG_EFI_STUB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * The decompression buffer will start at ImageBase. When relocating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) * the compressed kernel to its end, we must ensure that the head
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) * section does not get overwritten. The head section occupies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) * [i, i + _ehead), and the destination is [init_sz - _end, init_sz).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) * At present these should never overlap, because 'i' is at most 32k
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) * because of SETUP_SECT_MAX, '_ehead' is less than 1k, and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) * calculation of INIT_SIZE in boot/header.S ensures that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) * 'init_sz - _end' is at least 64k.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * For future-proofing, increase init_sz if necessary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (init_sz - _end < i + _ehead) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) init_sz = (i + _ehead + _end + 4095) & ~4095;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) put_unaligned_le32(init_sz, &buf[0x260]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) update_pecoff_text(setup_sectors * 512, i + (sys_size * 16), init_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) efi_stub_entry_update();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) /* Update kernel_info offset. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) put_unaligned_le32(kernel_info, &buf[0x268]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) crc = partial_crc32(buf, i, crc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (fwrite(buf, 1, i, dest) != i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) die("Writing setup failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) /* Copy the kernel code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) crc = partial_crc32(kernel, sz, crc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (fwrite(kernel, 1, sz, dest) != sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) die("Writing kernel failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) /* Add padding leaving 4 bytes for the checksum */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) while (sz++ < (sys_size*16) - 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) crc = partial_crc32_one('\0', crc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (fwrite("\0", 1, 1, dest) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) die("Writing padding failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) /* Write the CRC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) put_unaligned_le32(crc, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) if (fwrite(buf, 1, 4, dest) != 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) die("Writing CRC failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) /* Catch any delayed write failures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (fclose(dest))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) die("Writing image failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) /* Everything is OK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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