Greg Hartman | 76d05dc | 2016-11-23 15:51:27 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License as |
| 6 | * published by the Free Software Foundation; either version 2 of the |
| 7 | * License, or any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | */ |
| 18 | |
| 19 | #include <stdint.h> |
| 20 | #include <stddef.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <stdio.h> |
| 23 | #include <string.h> |
| 24 | #include <sys/stat.h> |
| 25 | #include <unistd.h> |
| 26 | #include <errno.h> |
| 27 | #include <assert.h> |
| 28 | #include <getopt.h> |
| 29 | #include <gpxe/efi/efi.h> |
| 30 | #include <gpxe/efi/IndustryStandard/PeImage.h> |
| 31 | #include <gpxe/efi/IndustryStandard/Pci22.h> |
| 32 | |
| 33 | #define eprintf(...) fprintf ( stderr, __VA_ARGS__ ) |
| 34 | |
| 35 | /** Command-line options */ |
| 36 | struct options { |
| 37 | uint16_t vendor; |
| 38 | uint16_t device; |
| 39 | }; |
| 40 | |
| 41 | /** |
| 42 | * Allocate memory |
| 43 | * |
| 44 | * @v len Length of memory to allocate |
| 45 | * @ret ptr Pointer to allocated memory |
| 46 | */ |
| 47 | static void * xmalloc ( size_t len ) { |
| 48 | void *ptr; |
| 49 | |
| 50 | ptr = malloc ( len ); |
| 51 | if ( ! ptr ) { |
| 52 | eprintf ( "Could not allocate %zd bytes\n", len ); |
| 53 | exit ( 1 ); |
| 54 | } |
| 55 | |
| 56 | return ptr; |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Get file size |
| 61 | * |
| 62 | * @v file File |
| 63 | * @v len File size |
| 64 | */ |
| 65 | static size_t file_size ( FILE *file ) { |
| 66 | ssize_t len; |
| 67 | |
| 68 | return len; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Read information from PE headers |
| 73 | * |
| 74 | * @v pe PE file |
| 75 | * @ret machine Machine type |
| 76 | * @ret subsystem EFI subsystem |
| 77 | */ |
| 78 | static void read_pe_info ( void *pe, uint16_t *machine, |
| 79 | uint16_t *subsystem ) { |
| 80 | EFI_IMAGE_DOS_HEADER *dos; |
| 81 | union { |
| 82 | EFI_IMAGE_NT_HEADERS32 nt32; |
| 83 | EFI_IMAGE_NT_HEADERS64 nt64; |
| 84 | } *nt; |
| 85 | |
| 86 | /* Locate NT header */ |
| 87 | dos = pe; |
| 88 | nt = ( pe + dos->e_lfanew ); |
| 89 | |
| 90 | /* Parse out PE information */ |
| 91 | *machine = nt->nt32.FileHeader.Machine; |
| 92 | switch ( *machine ) { |
| 93 | case EFI_IMAGE_MACHINE_IA32: |
| 94 | *subsystem = nt->nt32.OptionalHeader.Subsystem; |
| 95 | break; |
| 96 | case EFI_IMAGE_MACHINE_X64: |
| 97 | *subsystem = nt->nt64.OptionalHeader.Subsystem; |
| 98 | break; |
| 99 | default: |
| 100 | eprintf ( "Unrecognised machine type %04x\n", *machine ); |
| 101 | exit ( 1 ); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Convert EFI image to ROM image |
| 107 | * |
| 108 | * @v pe EFI file |
| 109 | * @v rom ROM file |
| 110 | */ |
| 111 | static void make_efi_rom ( FILE *pe, FILE *rom, struct options *opts ) { |
| 112 | struct { |
| 113 | EFI_PCI_EXPANSION_ROM_HEADER rom; |
| 114 | PCI_DATA_STRUCTURE pci __attribute__ (( aligned ( 4 ) )); |
| 115 | uint8_t checksum; |
| 116 | } *headers; |
| 117 | struct stat pe_stat; |
| 118 | size_t pe_size; |
| 119 | size_t rom_size; |
| 120 | void *buf; |
| 121 | void *payload; |
| 122 | unsigned int i; |
| 123 | uint8_t checksum; |
| 124 | |
| 125 | /* Determine PE file size */ |
| 126 | if ( fstat ( fileno ( pe ), &pe_stat ) != 0 ) { |
| 127 | eprintf ( "Could not stat PE file: %s\n", |
| 128 | strerror ( errno ) ); |
| 129 | exit ( 1 ); |
| 130 | } |
| 131 | pe_size = pe_stat.st_size; |
| 132 | |
| 133 | /* Determine ROM file size */ |
| 134 | rom_size = ( ( pe_size + sizeof ( *headers ) + 511 ) & ~511 ); |
| 135 | |
| 136 | /* Allocate ROM buffer and read in PE file */ |
| 137 | buf = xmalloc ( rom_size ); |
| 138 | memset ( buf, 0, rom_size ); |
| 139 | headers = buf; |
| 140 | payload = ( buf + sizeof ( *headers ) ); |
| 141 | if ( fread ( payload, pe_size, 1, pe ) != 1 ) { |
| 142 | eprintf ( "Could not read PE file: %s\n", |
| 143 | strerror ( errno ) ); |
| 144 | exit ( 1 ); |
| 145 | } |
| 146 | |
| 147 | /* Construct ROM header */ |
| 148 | headers->rom.Signature = PCI_EXPANSION_ROM_HEADER_SIGNATURE; |
| 149 | headers->rom.InitializationSize = ( rom_size / 512 ); |
| 150 | headers->rom.EfiSignature = EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE; |
| 151 | read_pe_info ( payload, &headers->rom.EfiMachineType, |
| 152 | &headers->rom.EfiSubsystem ); |
| 153 | headers->rom.EfiImageHeaderOffset = sizeof ( *headers ); |
| 154 | headers->rom.PcirOffset = |
| 155 | offsetof ( typeof ( *headers ), pci ); |
| 156 | headers->pci.Signature = PCI_DATA_STRUCTURE_SIGNATURE; |
| 157 | headers->pci.VendorId = opts->vendor; |
| 158 | headers->pci.DeviceId = opts->device; |
| 159 | headers->pci.Length = sizeof ( headers->pci ); |
| 160 | headers->pci.ClassCode[0] = PCI_CLASS_NETWORK; |
| 161 | headers->pci.ImageLength = ( rom_size / 512 ); |
| 162 | headers->pci.CodeType = 0x03; /* No constant in EFI headers? */ |
| 163 | headers->pci.Indicator = 0x80; /* No constant in EFI headers? */ |
| 164 | |
| 165 | /* Fix image checksum */ |
| 166 | for ( i = 0, checksum = 0 ; i < rom_size ; i++ ) |
| 167 | checksum += *( ( uint8_t * ) buf + i ); |
| 168 | headers->checksum -= checksum; |
| 169 | |
| 170 | /* Write out ROM */ |
| 171 | if ( fwrite ( buf, rom_size, 1, rom ) != 1 ) { |
| 172 | eprintf ( "Could not write ROM file: %s\n", |
| 173 | strerror ( errno ) ); |
| 174 | exit ( 1 ); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * Print help |
| 180 | * |
| 181 | * @v program_name Program name |
| 182 | */ |
| 183 | static void print_help ( const char *program_name ) { |
| 184 | eprintf ( "Syntax: %s [--vendor=VVVV] [--device=DDDD] " |
| 185 | "infile outfile\n", program_name ); |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Parse command-line options |
| 190 | * |
| 191 | * @v argc Argument count |
| 192 | * @v argv Argument list |
| 193 | * @v opts Options structure to populate |
| 194 | */ |
| 195 | static int parse_options ( const int argc, char **argv, |
| 196 | struct options *opts ) { |
| 197 | char *end; |
| 198 | int c; |
| 199 | |
| 200 | while (1) { |
| 201 | int option_index = 0; |
| 202 | static struct option long_options[] = { |
| 203 | { "vendor", required_argument, NULL, 'v' }, |
| 204 | { "device", required_argument, NULL, 'd' }, |
| 205 | { "help", 0, NULL, 'h' }, |
| 206 | { 0, 0, 0, 0 } |
| 207 | }; |
| 208 | |
| 209 | if ( ( c = getopt_long ( argc, argv, "v:d:h", |
| 210 | long_options, |
| 211 | &option_index ) ) == -1 ) { |
| 212 | break; |
| 213 | } |
| 214 | |
| 215 | switch ( c ) { |
| 216 | case 'v': |
| 217 | opts->vendor = strtoul ( optarg, &end, 16 ); |
| 218 | if ( *end ) { |
| 219 | eprintf ( "Invalid vendor \"%s\"\n", optarg ); |
| 220 | exit ( 2 ); |
| 221 | } |
| 222 | break; |
| 223 | case 'd': |
| 224 | opts->device = strtoul ( optarg, &end, 16 ); |
| 225 | if ( *end ) { |
| 226 | eprintf ( "Invalid device \"%s\"\n", optarg ); |
| 227 | exit ( 2 ); |
| 228 | } |
| 229 | break; |
| 230 | case 'h': |
| 231 | print_help ( argv[0] ); |
| 232 | exit ( 0 ); |
| 233 | case '?': |
| 234 | default: |
| 235 | exit ( 2 ); |
| 236 | } |
| 237 | } |
| 238 | return optind; |
| 239 | } |
| 240 | |
| 241 | int main ( int argc, char **argv ) { |
| 242 | struct options opts = { |
| 243 | }; |
| 244 | unsigned int infile_index; |
| 245 | const char *infile_name; |
| 246 | const char *outfile_name; |
| 247 | FILE *infile; |
| 248 | FILE *outfile; |
| 249 | |
| 250 | /* Parse command-line arguments */ |
| 251 | infile_index = parse_options ( argc, argv, &opts ); |
| 252 | if ( argc != ( infile_index + 2 ) ) { |
| 253 | print_help ( argv[0] ); |
| 254 | exit ( 2 ); |
| 255 | } |
| 256 | infile_name = argv[infile_index]; |
| 257 | outfile_name = argv[infile_index + 1]; |
| 258 | |
| 259 | /* Open input and output files */ |
| 260 | infile = fopen ( infile_name, "r" ); |
| 261 | if ( ! infile ) { |
| 262 | eprintf ( "Could not open %s for reading: %s\n", |
| 263 | infile_name, strerror ( errno ) ); |
| 264 | exit ( 1 ); |
| 265 | } |
| 266 | outfile = fopen ( outfile_name, "w" ); |
| 267 | if ( ! outfile ) { |
| 268 | eprintf ( "Could not open %s for writing: %s\n", |
| 269 | outfile_name, strerror ( errno ) ); |
| 270 | exit ( 1 ); |
| 271 | } |
| 272 | |
| 273 | /* Convert file */ |
| 274 | make_efi_rom ( infile, outfile, &opts ); |
| 275 | |
| 276 | fclose ( outfile ); |
| 277 | fclose ( infile ); |
| 278 | |
| 279 | return 0; |
| 280 | } |