Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QEMU PC System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2004 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include "hw.h" |
| 26 | #include "fw_cfg.h" |
| 27 | #include "multiboot.h" |
| 28 | #include "loader.h" |
| 29 | #include "elf.h" |
| 30 | #include "sysemu.h" |
| 31 | |
| 32 | /* Show multiboot debug output */ |
| 33 | //#define DEBUG_MULTIBOOT |
| 34 | |
| 35 | #ifdef DEBUG_MULTIBOOT |
| 36 | #define mb_debug(a...) fprintf(stderr, ## a) |
| 37 | #else |
| 38 | #define mb_debug(a...) |
| 39 | #endif |
| 40 | |
| 41 | #define MULTIBOOT_STRUCT_ADDR 0x9000 |
| 42 | |
| 43 | #if MULTIBOOT_STRUCT_ADDR > 0xf0000 |
| 44 | #error multiboot struct needs to fit in 16 bit real mode |
| 45 | #endif |
| 46 | |
| 47 | enum { |
| 48 | /* Multiboot info */ |
| 49 | MBI_FLAGS = 0, |
| 50 | MBI_MEM_LOWER = 4, |
| 51 | MBI_MEM_UPPER = 8, |
| 52 | MBI_BOOT_DEVICE = 12, |
| 53 | MBI_CMDLINE = 16, |
| 54 | MBI_MODS_COUNT = 20, |
| 55 | MBI_MODS_ADDR = 24, |
| 56 | MBI_MMAP_ADDR = 48, |
| 57 | |
| 58 | MBI_SIZE = 88, |
| 59 | |
| 60 | /* Multiboot modules */ |
| 61 | MB_MOD_START = 0, |
| 62 | MB_MOD_END = 4, |
| 63 | MB_MOD_CMDLINE = 8, |
| 64 | |
| 65 | MB_MOD_SIZE = 16, |
| 66 | |
| 67 | /* Region offsets */ |
| 68 | ADDR_E820_MAP = MULTIBOOT_STRUCT_ADDR + 0, |
| 69 | ADDR_MBI = ADDR_E820_MAP + 0x500, |
| 70 | |
| 71 | /* Multiboot flags */ |
| 72 | MULTIBOOT_FLAGS_MEMORY = 1 << 0, |
| 73 | MULTIBOOT_FLAGS_BOOT_DEVICE = 1 << 1, |
| 74 | MULTIBOOT_FLAGS_CMDLINE = 1 << 2, |
| 75 | MULTIBOOT_FLAGS_MODULES = 1 << 3, |
| 76 | MULTIBOOT_FLAGS_MMAP = 1 << 6, |
| 77 | }; |
| 78 | |
| 79 | typedef struct { |
| 80 | /* buffer holding kernel, cmdlines and mb_infos */ |
| 81 | void *mb_buf; |
| 82 | /* address in target */ |
| 83 | target_phys_addr_t mb_buf_phys; |
| 84 | /* size of mb_buf in bytes */ |
| 85 | unsigned mb_buf_size; |
| 86 | /* offset of mb-info's in bytes */ |
| 87 | target_phys_addr_t offset_mbinfo; |
| 88 | /* offset in buffer for cmdlines in bytes */ |
| 89 | target_phys_addr_t offset_cmdlines; |
| 90 | /* offset of modules in bytes */ |
| 91 | target_phys_addr_t offset_mods; |
| 92 | /* available slots for mb modules infos */ |
| 93 | int mb_mods_avail; |
| 94 | /* currently used slots of mb modules */ |
| 95 | int mb_mods_count; |
| 96 | } MultibootState; |
| 97 | |
| 98 | static uint32_t mb_add_cmdline(MultibootState *s, const char *cmdline) |
| 99 | { |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 100 | target_phys_addr_t p = s->offset_cmdlines; |
Adam Lackorzynski | 49e40b6 | 2011-07-06 10:03:57 +0200 | [diff] [blame] | 101 | char *b = (char *)s->mb_buf + p; |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 102 | |
Adam Lackorzynski | 49e40b6 | 2011-07-06 10:03:57 +0200 | [diff] [blame] | 103 | get_opt_value(b, strlen(cmdline) + 1, cmdline); |
| 104 | s->offset_cmdlines += strlen(b) + 1; |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 105 | return s->mb_buf_phys + p; |
| 106 | } |
| 107 | |
| 108 | static void mb_add_mod(MultibootState *s, |
| 109 | target_phys_addr_t start, target_phys_addr_t end, |
| 110 | target_phys_addr_t cmdline_phys) |
| 111 | { |
| 112 | char *p; |
| 113 | assert(s->mb_mods_count < s->mb_mods_avail); |
| 114 | |
| 115 | p = (char *)s->mb_buf + s->offset_mbinfo + MB_MOD_SIZE * s->mb_mods_count; |
| 116 | |
| 117 | stl_p(p + MB_MOD_START, start); |
| 118 | stl_p(p + MB_MOD_END, end); |
| 119 | stl_p(p + MB_MOD_CMDLINE, cmdline_phys); |
| 120 | |
Isaku Yamahata | bd418d9 | 2010-05-27 14:37:09 +0900 | [diff] [blame] | 121 | mb_debug("mod%02d: "TARGET_FMT_plx" - "TARGET_FMT_plx"\n", |
| 122 | s->mb_mods_count, start, end); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 123 | |
| 124 | s->mb_mods_count++; |
| 125 | } |
| 126 | |
| 127 | int load_multiboot(void *fw_cfg, |
| 128 | FILE *f, |
| 129 | const char *kernel_filename, |
| 130 | const char *initrd_filename, |
| 131 | const char *kernel_cmdline, |
| 132 | int kernel_file_size, |
| 133 | uint8_t *header) |
| 134 | { |
| 135 | int i, is_multiboot = 0; |
| 136 | uint32_t flags = 0; |
| 137 | uint32_t mh_entry_addr; |
| 138 | uint32_t mh_load_addr; |
| 139 | uint32_t mb_kernel_size; |
| 140 | MultibootState mbs; |
| 141 | uint8_t bootinfo[MBI_SIZE]; |
| 142 | uint8_t *mb_bootinfo_data; |
| 143 | |
| 144 | /* Ok, let's see if it is a multiboot image. |
| 145 | The header is 12x32bit long, so the latest entry may be 8192 - 48. */ |
| 146 | for (i = 0; i < (8192 - 48); i += 4) { |
| 147 | if (ldl_p(header+i) == 0x1BADB002) { |
| 148 | uint32_t checksum = ldl_p(header+i+8); |
| 149 | flags = ldl_p(header+i+4); |
| 150 | checksum += flags; |
| 151 | checksum += (uint32_t)0x1BADB002; |
| 152 | if (!checksum) { |
| 153 | is_multiboot = 1; |
| 154 | break; |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | if (!is_multiboot) |
| 160 | return 0; /* no multiboot */ |
| 161 | |
| 162 | mb_debug("qemu: I believe we found a multiboot image!\n"); |
| 163 | memset(bootinfo, 0, sizeof(bootinfo)); |
| 164 | memset(&mbs, 0, sizeof(mbs)); |
| 165 | |
| 166 | if (flags & 0x00000004) { /* MULTIBOOT_HEADER_HAS_VBE */ |
| 167 | fprintf(stderr, "qemu: multiboot knows VBE. we don't.\n"); |
| 168 | } |
| 169 | if (!(flags & 0x00010000)) { /* MULTIBOOT_HEADER_HAS_ADDR */ |
| 170 | uint64_t elf_entry; |
| 171 | uint64_t elf_low, elf_high; |
| 172 | int kernel_size; |
| 173 | fclose(f); |
Adam Lackorzynski | 9696846 | 2010-11-04 23:22:15 +0100 | [diff] [blame] | 174 | |
| 175 | if (((struct elf64_hdr*)header)->e_machine == EM_X86_64) { |
| 176 | fprintf(stderr, "Cannot load x86-64 image, give a 32bit one.\n"); |
| 177 | exit(1); |
| 178 | } |
| 179 | |
Aurelien Jarno | 409dbce | 2010-03-14 21:20:59 +0100 | [diff] [blame] | 180 | kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, |
| 181 | &elf_low, &elf_high, 0, ELF_MACHINE, 0); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 182 | if (kernel_size < 0) { |
| 183 | fprintf(stderr, "Error while loading elf kernel\n"); |
| 184 | exit(1); |
| 185 | } |
| 186 | mh_load_addr = elf_low; |
| 187 | mb_kernel_size = elf_high - elf_low; |
| 188 | mh_entry_addr = elf_entry; |
| 189 | |
| 190 | mbs.mb_buf = qemu_malloc(mb_kernel_size); |
| 191 | if (rom_copy(mbs.mb_buf, mh_load_addr, mb_kernel_size) != mb_kernel_size) { |
| 192 | fprintf(stderr, "Error while fetching elf kernel from rom\n"); |
| 193 | exit(1); |
| 194 | } |
| 195 | |
| 196 | mb_debug("qemu: loading multiboot-elf kernel (%#x bytes) with entry %#zx\n", |
| 197 | mb_kernel_size, (size_t)mh_entry_addr); |
| 198 | } else { |
| 199 | /* Valid if mh_flags sets MULTIBOOT_HEADER_HAS_ADDR. */ |
| 200 | uint32_t mh_header_addr = ldl_p(header+i+12); |
Göran Weinholt | 6b8273a | 2011-07-24 17:55:58 +0200 | [diff] [blame] | 201 | uint32_t mh_load_end_addr = ldl_p(header+i+20); |
| 202 | uint32_t mh_bss_end_addr = ldl_p(header+i+24); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 203 | mh_load_addr = ldl_p(header+i+16); |
| 204 | uint32_t mb_kernel_text_offset = i - (mh_header_addr - mh_load_addr); |
Göran Weinholt | 6b8273a | 2011-07-24 17:55:58 +0200 | [diff] [blame] | 205 | uint32_t mb_load_size = mh_load_end_addr - mh_load_addr; |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 206 | |
| 207 | mh_entry_addr = ldl_p(header+i+28); |
Göran Weinholt | 6b8273a | 2011-07-24 17:55:58 +0200 | [diff] [blame] | 208 | mb_kernel_size = mh_bss_end_addr - mh_load_addr; |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 209 | |
| 210 | /* Valid if mh_flags sets MULTIBOOT_HEADER_HAS_VBE. |
| 211 | uint32_t mh_mode_type = ldl_p(header+i+32); |
| 212 | uint32_t mh_width = ldl_p(header+i+36); |
| 213 | uint32_t mh_height = ldl_p(header+i+40); |
| 214 | uint32_t mh_depth = ldl_p(header+i+44); */ |
| 215 | |
| 216 | mb_debug("multiboot: mh_header_addr = %#x\n", mh_header_addr); |
| 217 | mb_debug("multiboot: mh_load_addr = %#x\n", mh_load_addr); |
Göran Weinholt | 6b8273a | 2011-07-24 17:55:58 +0200 | [diff] [blame] | 218 | mb_debug("multiboot: mh_load_end_addr = %#x\n", mh_load_end_addr); |
| 219 | mb_debug("multiboot: mh_bss_end_addr = %#x\n", mh_bss_end_addr); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 220 | mb_debug("qemu: loading multiboot kernel (%#x bytes) at %#x\n", |
Göran Weinholt | 6b8273a | 2011-07-24 17:55:58 +0200 | [diff] [blame] | 221 | mb_load_size, mh_load_addr); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 222 | |
| 223 | mbs.mb_buf = qemu_malloc(mb_kernel_size); |
| 224 | fseek(f, mb_kernel_text_offset, SEEK_SET); |
Göran Weinholt | 6b8273a | 2011-07-24 17:55:58 +0200 | [diff] [blame] | 225 | if (fread(mbs.mb_buf, 1, mb_load_size, f) != mb_load_size) { |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 226 | fprintf(stderr, "fread() failed\n"); |
| 227 | exit(1); |
| 228 | } |
Göran Weinholt | 6b8273a | 2011-07-24 17:55:58 +0200 | [diff] [blame] | 229 | memset(mbs.mb_buf + mb_load_size, 0, mb_kernel_size - mb_load_size); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 230 | fclose(f); |
| 231 | } |
| 232 | |
| 233 | mbs.mb_buf_phys = mh_load_addr; |
| 234 | |
| 235 | mbs.mb_buf_size = TARGET_PAGE_ALIGN(mb_kernel_size); |
| 236 | mbs.offset_mbinfo = mbs.mb_buf_size; |
| 237 | |
| 238 | /* Calculate space for cmdlines and mb_mods */ |
| 239 | mbs.mb_buf_size += strlen(kernel_filename) + 1; |
| 240 | mbs.mb_buf_size += strlen(kernel_cmdline) + 1; |
| 241 | if (initrd_filename) { |
| 242 | const char *r = initrd_filename; |
| 243 | mbs.mb_buf_size += strlen(r) + 1; |
| 244 | mbs.mb_mods_avail = 1; |
Adam Lackorzynski | 49e40b6 | 2011-07-06 10:03:57 +0200 | [diff] [blame] | 245 | while (*(r = get_opt_value(NULL, 0, r))) { |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 246 | mbs.mb_mods_avail++; |
| 247 | r++; |
| 248 | } |
| 249 | mbs.mb_buf_size += MB_MOD_SIZE * mbs.mb_mods_avail; |
| 250 | } |
| 251 | |
| 252 | mbs.mb_buf_size = TARGET_PAGE_ALIGN(mbs.mb_buf_size); |
| 253 | |
| 254 | /* enlarge mb_buf to hold cmdlines and mb-info structs */ |
| 255 | mbs.mb_buf = qemu_realloc(mbs.mb_buf, mbs.mb_buf_size); |
| 256 | mbs.offset_cmdlines = mbs.offset_mbinfo + mbs.mb_mods_avail * MB_MOD_SIZE; |
| 257 | |
| 258 | if (initrd_filename) { |
Adam Lackorzynski | 49e40b6 | 2011-07-06 10:03:57 +0200 | [diff] [blame] | 259 | char *next_initrd, not_last; |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 260 | |
| 261 | mbs.offset_mods = mbs.mb_buf_size; |
| 262 | |
| 263 | do { |
| 264 | char *next_space; |
Jes Sorensen | 37a05af | 2010-08-31 09:30:38 +0200 | [diff] [blame] | 265 | int mb_mod_length; |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 266 | uint32_t offs = mbs.mb_buf_size; |
| 267 | |
Adam Lackorzynski | 49e40b6 | 2011-07-06 10:03:57 +0200 | [diff] [blame] | 268 | next_initrd = (char *)get_opt_value(NULL, 0, initrd_filename); |
| 269 | not_last = *next_initrd; |
| 270 | *next_initrd = '\0'; |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 271 | /* if a space comes after the module filename, treat everything |
| 272 | after that as parameters */ |
| 273 | target_phys_addr_t c = mb_add_cmdline(&mbs, initrd_filename); |
| 274 | if ((next_space = strchr(initrd_filename, ' '))) |
| 275 | *next_space = '\0'; |
| 276 | mb_debug("multiboot loading module: %s\n", initrd_filename); |
| 277 | mb_mod_length = get_image_size(initrd_filename); |
| 278 | if (mb_mod_length < 0) { |
Adam Lackorzynski | f95857b | 2011-04-08 08:48:42 +0200 | [diff] [blame] | 279 | fprintf(stderr, "Failed to open file '%s'\n", initrd_filename); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 280 | exit(1); |
| 281 | } |
| 282 | |
| 283 | mbs.mb_buf_size = TARGET_PAGE_ALIGN(mb_mod_length + mbs.mb_buf_size); |
| 284 | mbs.mb_buf = qemu_realloc(mbs.mb_buf, mbs.mb_buf_size); |
| 285 | |
| 286 | load_image(initrd_filename, (unsigned char *)mbs.mb_buf + offs); |
| 287 | mb_add_mod(&mbs, mbs.mb_buf_phys + offs, |
| 288 | mbs.mb_buf_phys + offs + mb_mod_length, c); |
| 289 | |
Isaku Yamahata | bd418d9 | 2010-05-27 14:37:09 +0900 | [diff] [blame] | 290 | mb_debug("mod_start: %p\nmod_end: %p\n cmdline: "TARGET_FMT_plx"\n", |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 291 | (char *)mbs.mb_buf + offs, |
| 292 | (char *)mbs.mb_buf + offs + mb_mod_length, c); |
| 293 | initrd_filename = next_initrd+1; |
Adam Lackorzynski | 49e40b6 | 2011-07-06 10:03:57 +0200 | [diff] [blame] | 294 | } while (not_last); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 295 | } |
| 296 | |
| 297 | /* Commandline support */ |
| 298 | char kcmdline[strlen(kernel_filename) + strlen(kernel_cmdline) + 2]; |
| 299 | snprintf(kcmdline, sizeof(kcmdline), "%s %s", |
| 300 | kernel_filename, kernel_cmdline); |
| 301 | stl_p(bootinfo + MBI_CMDLINE, mb_add_cmdline(&mbs, kcmdline)); |
| 302 | |
| 303 | stl_p(bootinfo + MBI_MODS_ADDR, mbs.mb_buf_phys + mbs.offset_mbinfo); |
| 304 | stl_p(bootinfo + MBI_MODS_COUNT, mbs.mb_mods_count); /* mods_count */ |
| 305 | |
| 306 | /* the kernel is where we want it to be now */ |
| 307 | stl_p(bootinfo + MBI_FLAGS, MULTIBOOT_FLAGS_MEMORY |
| 308 | | MULTIBOOT_FLAGS_BOOT_DEVICE |
| 309 | | MULTIBOOT_FLAGS_CMDLINE |
| 310 | | MULTIBOOT_FLAGS_MODULES |
| 311 | | MULTIBOOT_FLAGS_MMAP); |
| 312 | stl_p(bootinfo + MBI_MEM_LOWER, 640); |
Kevin Wolf | 0bfe006 | 2011-01-04 14:03:30 +0100 | [diff] [blame] | 313 | stl_p(bootinfo + MBI_MEM_UPPER, (ram_size / 1024) - 1024); |
Arun Thomas | c83066d | 2011-04-28 16:11:11 +0200 | [diff] [blame] | 314 | stl_p(bootinfo + MBI_BOOT_DEVICE, 0x8000ffff); /* XXX: use the -boot switch? */ |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 315 | stl_p(bootinfo + MBI_MMAP_ADDR, ADDR_E820_MAP); |
| 316 | |
| 317 | mb_debug("multiboot: mh_entry_addr = %#x\n", mh_entry_addr); |
Isaku Yamahata | bd418d9 | 2010-05-27 14:37:09 +0900 | [diff] [blame] | 318 | mb_debug(" mb_buf_phys = "TARGET_FMT_plx"\n", mbs.mb_buf_phys); |
| 319 | mb_debug(" mod_start = "TARGET_FMT_plx"\n", mbs.mb_buf_phys + mbs.offset_mods); |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 320 | mb_debug(" mb_mods_count = %d\n", mbs.mb_mods_count); |
| 321 | |
| 322 | /* save bootinfo off the stack */ |
| 323 | mb_bootinfo_data = qemu_malloc(sizeof(bootinfo)); |
| 324 | memcpy(mb_bootinfo_data, bootinfo, sizeof(bootinfo)); |
| 325 | |
| 326 | /* Pass variables to option rom */ |
| 327 | fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ENTRY, mh_entry_addr); |
| 328 | fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, mh_load_addr); |
| 329 | fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, mbs.mb_buf_size); |
| 330 | fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, |
| 331 | mbs.mb_buf, mbs.mb_buf_size); |
| 332 | |
| 333 | fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, ADDR_MBI); |
| 334 | fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, sizeof(bootinfo)); |
| 335 | fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, mb_bootinfo_data, |
| 336 | sizeof(bootinfo)); |
| 337 | |
Gleb Natapov | 2e55e84 | 2010-12-08 13:35:07 +0200 | [diff] [blame] | 338 | option_rom[nb_option_roms].name = "multiboot.bin"; |
| 339 | option_rom[nb_option_roms].bootindex = 0; |
Adam Lackorzynski | 5200144 | 2009-12-26 14:13:46 +0100 | [diff] [blame] | 340 | nb_option_roms++; |
| 341 | |
| 342 | return 1; /* yes, we are multiboot */ |
| 343 | } |