1 /* shared.h - definitions used in all GRUB-specific code */ 2 /* 3 * GRUB -- GRand Unified Bootloader 4 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 */ 20 21 /* 22 * Generic defines to use anywhere 23 */ 24 25 #ifndef GRUB_SHARED_HEADER 26 #define GRUB_SHARED_HEADER 1 27 28 #include <config.h> 29 30 /* Add an underscore to a C symbol in assembler code if needed. */ 31 #ifdef HAVE_ASM_USCORE 32 # define EXT_C(sym) _ ## sym 33 #else 34 # define EXT_C(sym) sym 35 #endif 36 37 /* Maybe redirect memory requests through grub_scratch_mem. */ 38 #ifdef GRUB_UTIL 39 extern char *grub_scratch_mem; 40 # define RAW_ADDR(x) ((x) + (int) grub_scratch_mem) 41 # define RAW_SEG(x) (RAW_ADDR ((x) << 4) >> 4) 42 #else 43 # define RAW_ADDR(x) (x) 44 # define RAW_SEG(x) (x) 45 #endif 46 47 /* ZFS will use the top 4 Meg of physical memory (below 4Gig) for sratch */ 48 #define ZFS_SCRATCH_SIZE 0x400000 49 50 #ifndef MAXPATHLEN 51 #define MAXPATHLEN 1024 52 #endif 53 54 #define MAXNAMELEN 256 55 #define MIN(x, y) ((x) < (y) ? (x) : (y)) 56 57 /* Boot signature related defines for the findroot command */ 58 #define BOOTSIGN_DIR "/boot/grub/bootsign" 59 #define BOOTSIGN_ARGLEN (MAXNAMELEN + 10) /* (<sign>,0,d) */ 60 #define BOOTSIGN_LEN (sizeof (BOOTSIGN_DIR) + 1 + BOOTSIGN_ARGLEN) 61 #define BOOTSIGN_BACKUP "/etc/bootsign" 62 63 /* 64 * Integer sizes 65 */ 66 67 #define MAXINT 0x7FFFFFFF 68 #define MAXUINT 0xFFFFFFFF 69 70 /* Maximum command line size. Before you blindly increase this value, 71 see the comment in char_io.c (get_cmdline). */ 72 #define MAX_CMDLINE 1600 73 #define NEW_HEAPSIZE 1500 74 75 /* 512-byte scratch area */ 76 #define SCRATCHADDR RAW_ADDR (0x77e00) 77 #define SCRATCHSEG RAW_SEG (0x77e0) 78 79 /* 80 * This is the location of the raw device buffer. It is 31.5K 81 * in size. 82 */ 83 84 #define BUFFERLEN 0x7e00 85 #define BUFFERADDR RAW_ADDR (0x70000) 86 #define BUFFERSEG RAW_SEG (0x7000) 87 88 #define BOOT_PART_TABLE RAW_ADDR (0x07be) 89 90 /* 91 * BIOS disk defines 92 */ 93 #define BIOSDISK_READ 0x0 94 #define BIOSDISK_WRITE 0x1 95 #define BIOSDISK_ERROR_GEOMETRY 0x100 96 #define BIOSDISK_ERROR_SHORT_IO 0x101 97 #define BIOSDISK_FLAG_LBA_EXTENSION 0x1 98 #define BIOSDISK_FLAG_CDROM 0x2 99 100 /* 101 * This is the filesystem (not raw device) buffer. 102 * It is 32K in size, do not overrun! 103 */ 104 105 #define FSYS_BUFLEN 0x8000 106 #define FSYS_BUF RAW_ADDR (0x68000) 107 108 /* Command-line buffer for Multiboot kernels and modules. This area 109 includes the area into which Stage 1.5 and Stage 1 are loaded, but 110 that's no problem. */ 111 #define MB_CMDLINE_BUF RAW_ADDR (0x2000) 112 #define MB_CMDLINE_BUFLEN 0x6000 113 114 /* The buffer for the password. */ 115 #define PASSWORD_BUF RAW_ADDR (0x78000) 116 #define PASSWORD_BUFLEN 0x200 117 118 /* THe buffer for the filename of "/boot/grub/default". */ 119 #define DEFAULT_FILE_BUF (PASSWORD_BUF + PASSWORD_BUFLEN) 120 #define DEFAULT_FILE_BUFLEN 0x60 121 122 /* The buffer for the command-line. */ 123 #define CMDLINE_BUF (DEFAULT_FILE_BUF + DEFAULT_FILE_BUFLEN) 124 #define CMDLINE_BUFLEN MAX_CMDLINE 125 126 /* The kill buffer for the command-line. */ 127 #define KILL_BUF (CMDLINE_BUF + CMDLINE_BUFLEN) 128 #define KILL_BUFLEN MAX_CMDLINE 129 130 /* The history buffer for the command-line. */ 131 #define HISTORY_BUF (KILL_BUF + KILL_BUFLEN) 132 #define HISTORY_SIZE 5 133 #define HISTORY_BUFLEN (MAX_CMDLINE * HISTORY_SIZE) 134 135 /* The buffer for the completion. */ 136 #define COMPLETION_BUF (HISTORY_BUF + HISTORY_BUFLEN) 137 #define COMPLETION_BUFLEN MAX_CMDLINE 138 139 /* The buffer for the unique string. */ 140 #define UNIQUE_BUF (COMPLETION_BUF + COMPLETION_BUFLEN) 141 #define UNIQUE_BUFLEN MAX_CMDLINE 142 143 /* The buffer for the menu entries. */ 144 #define MENU_BUF (UNIQUE_BUF + UNIQUE_BUFLEN) 145 #define MENU_BUFLEN (0x8000 + PASSWORD_BUF - MENU_BUF) 146 147 /* The size of the drive map. */ 148 #define DRIVE_MAP_SIZE 8 149 150 /* The size of the key map. */ 151 #define KEY_MAP_SIZE 128 152 153 /* The size of the io map. */ 154 #define IO_MAP_SIZE 128 155 156 /* 157 * Linux setup parameters 158 */ 159 160 #define LINUX_MAGIC_SIGNATURE 0x53726448 /* "HdrS" */ 161 #define LINUX_DEFAULT_SETUP_SECTS 4 162 #define LINUX_FLAG_CAN_USE_HEAP 0x80 163 #define LINUX_INITRD_MAX_ADDRESS 0x38000000 164 #define LINUX_MAX_SETUP_SECTS 64 165 #define LINUX_BOOT_LOADER_TYPE 0x71 166 #define LINUX_HEAP_END_OFFSET (0x9000 - 0x200) 167 168 #define LINUX_BZIMAGE_ADDR RAW_ADDR (0x100000) 169 #define LINUX_ZIMAGE_ADDR RAW_ADDR (0x10000) 170 #define LINUX_OLD_REAL_MODE_ADDR RAW_ADDR (0x90000) 171 #define LINUX_SETUP_STACK 0x9000 172 173 #define LINUX_FLAG_BIG_KERNEL 0x1 174 175 /* Linux's video mode selection support. Actually I hate it! */ 176 #define LINUX_VID_MODE_NORMAL 0xFFFF 177 #define LINUX_VID_MODE_EXTENDED 0xFFFE 178 #define LINUX_VID_MODE_ASK 0xFFFD 179 180 #define LINUX_CL_OFFSET 0x9000 181 #define LINUX_CL_END_OFFSET 0x90FF 182 #define LINUX_SETUP_MOVE_SIZE 0x9100 183 #define LINUX_CL_MAGIC 0xA33F 184 185 /* 186 * General disk stuff 187 */ 188 189 #define SECTOR_SIZE 0x200 190 #define SECTOR_BITS 9 191 #define BIOS_FLAG_FIXED_DISK 0x80 192 193 #define BOOTSEC_LOCATION RAW_ADDR (0x7C00) 194 #define BOOTSEC_SIGNATURE 0xAA55 195 #define BOOTSEC_BPB_OFFSET 0x3 196 #define BOOTSEC_BPB_LENGTH 0x3B 197 #define BOOTSEC_BPB_SYSTEM_ID 0x3 198 #define BOOTSEC_BPB_HIDDEN_SECTORS 0x1C 199 #define BOOTSEC_PART_OFFSET 0x1BE 200 #define BOOTSEC_PART_LENGTH 0x40 201 #define BOOTSEC_SIG_OFFSET 0x1FE 202 #define BOOTSEC_LISTSIZE 8 203 204 /* Not bad, perhaps. */ 205 #define NETWORK_DRIVE 0x20 206 207 /* 208 * GRUB specific information 209 * (in LSB order) 210 */ 211 212 #include <stage1.h> 213 214 #define STAGE2_VER_MAJ_OFFS 0x6 215 #define STAGE2_INSTALLPART 0x8 216 #define STAGE2_SAVED_ENTRYNO 0xc 217 #define STAGE2_STAGE2_ID 0x10 218 #define STAGE2_FORCE_LBA 0x11 219 #define STAGE2_VER_STR_OFFS 0x12 220 221 /* Stage 2 identifiers */ 222 #define STAGE2_ID_STAGE2 0 223 #define STAGE2_ID_FFS_STAGE1_5 1 224 #define STAGE2_ID_E2FS_STAGE1_5 2 225 #define STAGE2_ID_FAT_STAGE1_5 3 226 #define STAGE2_ID_MINIX_STAGE1_5 4 227 #define STAGE2_ID_REISERFS_STAGE1_5 5 228 #define STAGE2_ID_VSTAFS_STAGE1_5 6 229 #define STAGE2_ID_JFS_STAGE1_5 7 230 #define STAGE2_ID_XFS_STAGE1_5 8 231 #define STAGE2_ID_ISO9660_STAGE1_5 9 232 #define STAGE2_ID_UFS2_STAGE1_5 10 233 #define STAGE2_ID_UFS_STAGE1_5 11 234 #define STAGE2_ID_ZFS_STAGE1_5 12 235 236 #ifndef STAGE1_5 237 # define STAGE2_ID STAGE2_ID_STAGE2 238 #else 239 # if defined(FSYS_FFS) 240 # define STAGE2_ID STAGE2_ID_FFS_STAGE1_5 241 # elif defined(FSYS_EXT2FS) 242 # define STAGE2_ID STAGE2_ID_E2FS_STAGE1_5 243 # elif defined(FSYS_FAT) 244 # define STAGE2_ID STAGE2_ID_FAT_STAGE1_5 245 # elif defined(FSYS_MINIX) 246 # define STAGE2_ID STAGE2_ID_MINIX_STAGE1_5 247 # elif defined(FSYS_REISERFS) 248 # define STAGE2_ID STAGE2_ID_REISERFS_STAGE1_5 249 # elif defined(FSYS_VSTAFS) 250 # define STAGE2_ID STAGE2_ID_VSTAFS_STAGE1_5 251 # elif defined(FSYS_JFS) 252 # define STAGE2_ID STAGE2_ID_JFS_STAGE1_5 253 # elif defined(FSYS_XFS) 254 # define STAGE2_ID STAGE2_ID_XFS_STAGE1_5 255 # elif defined(FSYS_ISO9660) 256 # define STAGE2_ID STAGE2_ID_ISO9660_STAGE1_5 257 # elif defined(FSYS_UFS2) 258 # define STAGE2_ID STAGE2_ID_UFS2_STAGE1_5 259 # elif defined(FSYS_UFS) 260 # define STAGE2_ID STAGE2_ID_UFS_STAGE1_5 261 # elif defined(FSYS_ZFS) 262 # define STAGE2_ID STAGE2_ID_ZFS_STAGE1_5 263 # else 264 # error "unknown Stage 2" 265 # endif 266 #endif 267 268 /* 269 * defines for use when switching between real and protected mode 270 */ 271 272 #define CR0_PE_ON 0x1 273 #define CR0_PE_OFF 0xfffffffe 274 #define PROT_MODE_CSEG 0x8 275 #define PROT_MODE_DSEG 0x10 276 #define PSEUDO_RM_CSEG 0x18 277 #define PSEUDO_RM_DSEG 0x20 278 #define STACKOFF (0x2000 - 0x10) 279 #define PROTSTACKINIT (FSYS_BUF - 0x10) 280 281 282 /* 283 * Assembly code defines 284 * 285 * "EXT_C" is assumed to be defined in the Makefile by the configure 286 * command. 287 */ 288 289 #define ENTRY(x) .globl EXT_C(x) ; EXT_C(x): 290 #define VARIABLE(x) ENTRY(x) 291 292 293 #define K_RDWR 0x60 /* keyboard data & cmds (read/write) */ 294 #define K_STATUS 0x64 /* keyboard status */ 295 #define K_CMD 0x64 /* keybd ctlr command (write-only) */ 296 297 #define K_OBUF_FUL 0x01 /* output buffer full */ 298 #define K_IBUF_FUL 0x02 /* input buffer full */ 299 300 #define KC_CMD_WIN 0xd0 /* read output port */ 301 #define KC_CMD_WOUT 0xd1 /* write output port */ 302 #define KB_OUTPUT_MASK 0xdd /* enable output buffer full interrupt 303 enable data line 304 enable clock line */ 305 #define KB_A20_ENABLE 0x02 306 307 /* Codes for getchar. */ 308 #define ASCII_CHAR(x) ((x) & 0xFF) 309 #if !defined(GRUB_UTIL) || !defined(HAVE_LIBCURSES) 310 # define KEY_LEFT 0x4B00 311 # define KEY_RIGHT 0x4D00 312 # define KEY_UP 0x4800 313 # define KEY_DOWN 0x5000 314 # define KEY_IC 0x5200 /* insert char */ 315 # define KEY_DC 0x5300 /* delete char */ 316 # define KEY_BACKSPACE 0x0008 317 # define KEY_HOME 0x4700 318 # define KEY_END 0x4F00 319 # define KEY_NPAGE 0x5100 320 # define KEY_PPAGE 0x4900 321 # define A_NORMAL 0x7 322 # define A_REVERSE 0x70 323 #elif defined(HAVE_NCURSES_CURSES_H) 324 # include <ncurses/curses.h> 325 #elif defined(HAVE_NCURSES_H) 326 # include <ncurses.h> 327 #elif defined(HAVE_CURSES_H) 328 # include <curses.h> 329 #endif 330 331 /* In old BSD curses, A_NORMAL and A_REVERSE are not defined, so we 332 define them here if they are undefined. */ 333 #ifndef A_NORMAL 334 # define A_NORMAL 0 335 #endif /* ! A_NORMAL */ 336 #ifndef A_REVERSE 337 # ifdef A_STANDOUT 338 # define A_REVERSE A_STANDOUT 339 # else /* ! A_STANDOUT */ 340 # define A_REVERSE 0 341 # endif /* ! A_STANDOUT */ 342 #endif /* ! A_REVERSE */ 343 344 /* Define ACS_* ourselves, since the definitions are not consistent among 345 various curses implementations. */ 346 #undef ACS_ULCORNER 347 #undef ACS_URCORNER 348 #undef ACS_LLCORNER 349 #undef ACS_LRCORNER 350 #undef ACS_HLINE 351 #undef ACS_VLINE 352 #undef ACS_LARROW 353 #undef ACS_RARROW 354 #undef ACS_UARROW 355 #undef ACS_DARROW 356 357 #define ACS_ULCORNER '+' 358 #define ACS_URCORNER '+' 359 #define ACS_LLCORNER '+' 360 #define ACS_LRCORNER '+' 361 #define ACS_HLINE '-' 362 #define ACS_VLINE '|' 363 #define ACS_LARROW '<' 364 #define ACS_RARROW '>' 365 #define ACS_UARROW '^' 366 #define ACS_DARROW 'v' 367 368 /* Special graphics characters for IBM displays. */ 369 #define DISP_UL 218 370 #define DISP_UR 191 371 #define DISP_LL 192 372 #define DISP_LR 217 373 #define DISP_HORIZ 196 374 #define DISP_VERT 179 375 #define DISP_LEFT 0x1b 376 #define DISP_RIGHT 0x1a 377 #define DISP_UP 0x18 378 #define DISP_DOWN 0x19 379 380 /* Remap some libc-API-compatible function names so that we prevent 381 circularararity. */ 382 #ifndef WITHOUT_LIBC_STUBS 383 #define memmove grub_memmove 384 #define memcpy grub_memmove /* we don't need a separate memcpy */ 385 #define memset grub_memset 386 #undef isspace 387 #define isspace grub_isspace 388 #define printf grub_printf 389 #define sprintf grub_sprintf 390 #undef putchar 391 #define putchar grub_putchar 392 #define strncat grub_strncat 393 #define strstr grub_strstr 394 #define memcmp grub_memcmp 395 #define strcmp grub_strcmp 396 #define tolower grub_tolower 397 #define strlen grub_strlen 398 #define strcpy grub_strcpy 399 #endif /* WITHOUT_LIBC_STUBS */ 400 401 #define UNDI_STACK (512 + 64) << 10 402 #define UNDI_STACK_SEG (UNDI_STACK >> 4) /* PXE load GRUB here */ 403 #define UNDI_STACK_OFF (0x10000 - 0x10) 404 405 #ifndef ASM_FILE 406 /* 407 * Below this should be ONLY defines and other constructs for C code. 408 */ 409 410 /* multiboot stuff */ 411 412 #include "mb_header.h" 413 #include "mb_info.h" 414 415 /* For the Linux/i386 boot protocol version 2.03. */ 416 struct linux_kernel_header 417 { 418 char code1[0x0020]; 419 unsigned short cl_magic; /* Magic number 0xA33F */ 420 unsigned short cl_offset; /* The offset of command line */ 421 char code2[0x01F1 - 0x0020 - 2 - 2]; 422 unsigned char setup_sects; /* The size of the setup in sectors */ 423 unsigned short root_flags; /* If the root is mounted readonly */ 424 unsigned short syssize; /* obsolete */ 425 unsigned short swap_dev; /* obsolete */ 426 unsigned short ram_size; /* obsolete */ 427 unsigned short vid_mode; /* Video mode control */ 428 unsigned short root_dev; /* Default root device number */ 429 unsigned short boot_flag; /* 0xAA55 magic number */ 430 unsigned short jump; /* Jump instruction */ 431 unsigned long header; /* Magic signature "HdrS" */ 432 unsigned short version; /* Boot protocol version supported */ 433 unsigned long realmode_swtch; /* Boot loader hook */ 434 unsigned long start_sys; /* Points to kernel version string */ 435 unsigned char type_of_loader; /* Boot loader identifier */ 436 unsigned char loadflags; /* Boot protocol option flags */ 437 unsigned short setup_move_size; /* Move to high memory size */ 438 unsigned long code32_start; /* Boot loader hook */ 439 unsigned long ramdisk_image; /* initrd load address */ 440 unsigned long ramdisk_size; /* initrd size */ 441 unsigned long bootsect_kludge; /* obsolete */ 442 unsigned short heap_end_ptr; /* Free memory after setup end */ 443 unsigned short pad1; /* Unused */ 444 char *cmd_line_ptr; /* Points to the kernel command line */ 445 unsigned long initrd_addr_max; /* The highest address of initrd */ 446 } __attribute__ ((packed)); 447 448 /* Memory map address range descriptor used by GET_MMAP_ENTRY. */ 449 struct mmar_desc 450 { 451 unsigned long desc_len; /* Size of this descriptor. */ 452 unsigned long long addr; /* Base address. */ 453 unsigned long long length; /* Length in bytes. */ 454 unsigned long type; /* Type of address range. */ 455 } __attribute__ ((packed)); 456 457 /* VBE controller information. */ 458 struct vbe_controller 459 { 460 unsigned char signature[4]; 461 unsigned short version; 462 unsigned long oem_string; 463 unsigned long capabilities; 464 unsigned long video_mode; 465 unsigned short total_memory; 466 unsigned short oem_software_rev; 467 unsigned long oem_vendor_name; 468 unsigned long oem_product_name; 469 unsigned long oem_product_rev; 470 unsigned char reserved[222]; 471 unsigned char oem_data[256]; 472 } __attribute__ ((packed)); 473 474 /* VBE mode information. */ 475 struct vbe_mode 476 { 477 unsigned short mode_attributes; 478 unsigned char win_a_attributes; 479 unsigned char win_b_attributes; 480 unsigned short win_granularity; 481 unsigned short win_size; 482 unsigned short win_a_segment; 483 unsigned short win_b_segment; 484 unsigned long win_func; 485 unsigned short bytes_per_scanline; 486 487 /* >=1.2 */ 488 unsigned short x_resolution; 489 unsigned short y_resolution; 490 unsigned char x_char_size; 491 unsigned char y_char_size; 492 unsigned char number_of_planes; 493 unsigned char bits_per_pixel; 494 unsigned char number_of_banks; 495 unsigned char memory_model; 496 unsigned char bank_size; 497 unsigned char number_of_image_pages; 498 unsigned char reserved0; 499 500 /* direct color */ 501 unsigned char red_mask_size; 502 unsigned char red_field_position; 503 unsigned char green_mask_size; 504 unsigned char green_field_position; 505 unsigned char blue_mask_size; 506 unsigned char blue_field_position; 507 unsigned char reserved_mask_size; 508 unsigned char reserved_field_position; 509 unsigned char direct_color_mode_info; 510 511 /* >=2.0 */ 512 unsigned long phys_base; 513 unsigned long reserved1; 514 unsigned short reversed2; 515 516 /* >=3.0 */ 517 unsigned short linear_bytes_per_scanline; 518 unsigned char banked_number_of_image_pages; 519 unsigned char linear_number_of_image_pages; 520 unsigned char linear_red_mask_size; 521 unsigned char linear_red_field_position; 522 unsigned char linear_green_mask_size; 523 unsigned char linear_green_field_position; 524 unsigned char linear_blue_mask_size; 525 unsigned char linear_blue_field_position; 526 unsigned char linear_reserved_mask_size; 527 unsigned char linear_reserved_field_position; 528 unsigned long max_pixel_clock; 529 530 unsigned char reserved3[189]; 531 } __attribute__ ((packed)); 532 533 #undef NULL 534 #define NULL ((void *) 0) 535 536 /* Error codes (descriptions are in common.c) */ 537 typedef enum 538 { 539 ERR_NONE = 0, 540 ERR_BAD_FILENAME, 541 ERR_BAD_FILETYPE, 542 ERR_BAD_GZIP_DATA, 543 ERR_BAD_GZIP_HEADER, 544 ERR_BAD_PART_TABLE, 545 ERR_BAD_VERSION, 546 ERR_BELOW_1MB, 547 ERR_BOOT_COMMAND, 548 ERR_BOOT_FAILURE, 549 ERR_BOOT_FEATURES, 550 ERR_DEV_FORMAT, 551 ERR_DEV_VALUES, 552 ERR_EXEC_FORMAT, 553 ERR_FILELENGTH, 554 ERR_FILE_NOT_FOUND, 555 ERR_FSYS_CORRUPT, 556 ERR_FSYS_MOUNT, 557 ERR_GEOM, 558 ERR_NEED_LX_KERNEL, 559 ERR_NEED_MB_KERNEL, 560 ERR_NO_DISK, 561 ERR_NO_PART, 562 ERR_NUMBER_PARSING, 563 ERR_OUTSIDE_PART, 564 ERR_READ, 565 ERR_SYMLINK_LOOP, 566 ERR_UNRECOGNIZED, 567 ERR_WONT_FIT, 568 ERR_WRITE, 569 ERR_BAD_ARGUMENT, 570 ERR_UNALIGNED, 571 ERR_PRIVILEGED, 572 ERR_DEV_NEED_INIT, 573 ERR_NO_DISK_SPACE, 574 ERR_NUMBER_OVERFLOW, 575 ERR_BAD_GZIP_CRC, 576 ERR_FILESYSTEM_NOT_FOUND, 577 ERR_NO_BOOTPATH, 578 ERR_NEWER_VERSION, 579 ERR_NOTXPM, 580 ERR_TOOMANYCOLORS, 581 ERR_CORRUPTXPM, 582 ERR_NOVAR, 583 MAX_ERR_NUM 584 } grub_error_t; 585 586 typedef enum 587 { 588 CFG_HARDCODED, 589 CFG_150, 590 CFG_MAC, 591 CFG_BOOTFILE 592 } configfile_origin_t; 593 594 extern unsigned long install_partition; 595 extern unsigned long boot_drive; 596 extern unsigned long install_second_sector; 597 extern struct apm_info apm_bios_info; 598 extern unsigned long boot_part_addr; 599 extern int saved_entryno; 600 extern unsigned char force_lba; 601 extern char version_string[]; 602 extern char config_file[]; 603 extern char *bootfile; 604 extern configfile_origin_t configfile_origin; 605 extern unsigned long linux_text_len; 606 extern char *linux_data_tmp_addr; 607 extern char *linux_data_real_addr; 608 609 #ifdef GRUB_UTIL 610 /* If not using config file, this variable is set to zero, 611 otherwise non-zero. */ 612 extern int use_config_file; 613 /* If using the preset menu, this variable is set to non-zero, 614 otherwise zero. */ 615 extern int use_preset_menu; 616 /* If not using curses, this variable is set to zero, otherwise non-zero. */ 617 extern int use_curses; 618 /* The flag for verbose messages. */ 619 extern int verbose; 620 /* The flag for read-only. */ 621 extern int read_only; 622 /* The number of floppies to be probed. */ 623 extern int floppy_disks; 624 /* The map between BIOS drives and UNIX device file names. */ 625 extern char **device_map; 626 /* The filename which stores the information about a device map. */ 627 extern char *device_map_file; 628 /* The array of geometries. */ 629 extern struct geometry *disks; 630 /* Assign DRIVE to a device name DEVICE. */ 631 extern void assign_device_name (int drive, const char *device); 632 #endif 633 634 #ifndef STAGE1_5 635 /* GUI interface variables. */ 636 # define MAX_FALLBACK_ENTRIES 8 637 extern int fallback_entries[MAX_FALLBACK_ENTRIES]; 638 extern int fallback_entryno; 639 extern int default_entry; 640 extern int current_entryno; 641 642 extern unsigned int min_mem64; 643 644 /* The constants for password types. */ 645 typedef enum 646 { 647 PASSWORD_PLAIN, 648 PASSWORD_MD5, 649 PASSWORD_UNSUPPORTED 650 } 651 password_t; 652 653 extern char *password; 654 extern password_t password_type; 655 extern int auth; 656 extern char commands[]; 657 658 /* For `more'-like feature. */ 659 extern int max_lines; 660 extern int count_lines; 661 extern int use_pager; 662 #endif 663 664 #ifndef NO_DECOMPRESSION 665 extern int no_decompression; 666 extern int compressed_file; 667 #endif 668 669 /* instrumentation variables */ 670 extern void (*disk_read_hook) (unsigned int, int, int); 671 extern void (*disk_read_func) (unsigned int, int, int); 672 673 #ifndef STAGE1_5 674 /* The flag for debug mode. */ 675 extern int debug; 676 #endif /* STAGE1_5 */ 677 678 extern unsigned long current_drive; 679 extern unsigned long current_partition; 680 extern char current_rootpool[MAXNAMELEN]; 681 extern char current_bootfs[MAXNAMELEN]; 682 extern unsigned long long current_bootfs_obj; 683 extern char current_bootpath[MAXPATHLEN]; 684 extern char current_devid[MAXPATHLEN]; 685 extern int is_zfs_mount; 686 extern unsigned long best_drive; 687 extern unsigned long best_part; 688 extern int find_best_root; 689 690 extern int fsys_type; 691 692 /* The information for a disk geometry. The CHS information is only for 693 DOS/Partition table compatibility, and the real number of sectors is 694 stored in TOTAL_SECTORS. */ 695 struct geometry 696 { 697 /* The number of cylinders */ 698 unsigned long cylinders; 699 /* The number of heads */ 700 unsigned long heads; 701 /* The number of sectors */ 702 unsigned long sectors; 703 /* The total number of sectors */ 704 unsigned long long total_sectors; 705 /* Device sector size */ 706 unsigned long sector_size; 707 /* Flags */ 708 unsigned long flags; 709 }; 710 711 extern unsigned long part_start; 712 extern unsigned long part_length; 713 714 extern int current_slice; 715 716 extern int buf_drive; 717 #define BUF_CACHE_INVALID 0xffffffff 718 extern unsigned int buf_track; 719 extern struct geometry buf_geom; 720 721 /* these are the current file position and maximum file position */ 722 extern int filepos; 723 extern int filemax; 724 725 /* 726 * Common BIOS/boot data. 727 */ 728 729 extern struct multiboot_info mbi; 730 extern unsigned long saved_drive; 731 extern unsigned long saved_partition; 732 extern unsigned long cdrom_drive; 733 #ifndef STAGE1_5 734 #ifdef SOLARIS_NETBOOT 735 extern unsigned long dhcpack_length; 736 extern unsigned long dhcpack_buf; 737 #endif 738 extern unsigned long saved_mem_upper; 739 extern unsigned long extended_memory; 740 #endif 741 742 /* 743 * Error variables. 744 */ 745 746 extern grub_error_t errnum; 747 extern char *err_list[]; 748 749 /* don't print geeky noise */ 750 typedef enum 751 { 752 SILENT, 753 VERBOSE, 754 DEFER_SILENT, 755 DEFER_VERBOSE 756 } silent_status; 757 758 /* one screen worth of messages 80x24 = 1920 chars -- more with newlines */ 759 #define SCREENBUF 2000 760 761 struct silentbuf { 762 silent_status status; 763 int looped; 764 char buffer[SCREENBUF]; 765 char *buffer_start; 766 }; 767 768 extern struct silentbuf silent; 769 extern int reset_term; 770 771 /* Simplify declaration of entry_addr. */ 772 typedef void (*entry_func) (int, int, int, int, int, int) 773 __attribute__ ((noreturn)); 774 775 extern entry_func entry_addr; 776 777 /* Enter the stage1.5/stage2 C code after the stack is set up. */ 778 void cmain (void); 779 780 /* Halt the processor (called after an unrecoverable error). */ 781 void stop (void) __attribute__ ((noreturn)); 782 783 /* Reboot the system. */ 784 void grub_reboot (void) __attribute__ ((noreturn)); 785 786 /* Halt the system, using APM if possible. If NO_APM is true, don't use 787 APM even if it is available. */ 788 void grub_halt (int no_apm) __attribute__ ((noreturn)); 789 790 /* Copy MAP to the drive map and set up int13_handler. */ 791 void set_int13_handler (unsigned short *map); 792 793 /* Set up int15_handler. */ 794 void set_int15_handler (void); 795 796 /* Restore the original int15 handler. */ 797 void unset_int15_handler (void); 798 799 /* Track the int13 handler to probe I/O address space. */ 800 void track_int13 (int drive); 801 802 /* The key map. */ 803 extern unsigned short bios_key_map[]; 804 extern unsigned short ascii_key_map[]; 805 extern unsigned short io_map[]; 806 807 /* calls for direct boot-loader chaining */ 808 void chain_stage1 (unsigned long segment, unsigned long offset, 809 unsigned long part_table_addr) 810 __attribute__ ((noreturn)); 811 void chain_stage2 (unsigned long segment, unsigned long offset, 812 int second_sector) 813 __attribute__ ((noreturn)); 814 815 /* do some funky stuff, then boot linux */ 816 void linux_boot (void) __attribute__ ((noreturn)); 817 818 /* do some funky stuff, then boot bzImage linux */ 819 void big_linux_boot (void) __attribute__ ((noreturn)); 820 821 /* booting a multiboot executable */ 822 void multi_boot (int start, int mb_info) __attribute__ ((noreturn)); 823 824 /* If LINEAR is nonzero, then set the Intel processor to linear mode. 825 Otherwise, bit 20 of all memory accesses is always forced to zero, 826 causing a wraparound effect for bugwards compatibility with the 827 8086 CPU. */ 828 void gateA20 (int linear); 829 830 /* memory probe routines */ 831 int get_memsize (int type); 832 int get_eisamemsize (void); 833 834 /* Fetch the next entry in the memory map and return the continuation 835 value. DESC is a pointer to the descriptor buffer, and CONT is the 836 previous continuation value (0 to get the first entry in the 837 map). */ 838 int get_mmap_entry (struct mmar_desc *desc, int cont); 839 840 /* Get the linear address of a ROM configuration table. Return zero, 841 if fails. */ 842 unsigned long get_rom_config_table (void); 843 844 /* Get APM BIOS information. */ 845 void get_apm_info (void); 846 847 /* Get VBE controller information. */ 848 int get_vbe_controller_info (struct vbe_controller *controller); 849 850 /* Get VBE mode information. */ 851 int get_vbe_mode_info (int mode_number, struct vbe_mode *mode); 852 853 /* Set VBE mode. */ 854 int set_vbe_mode (int mode_number); 855 856 /* Return the data area immediately following our code. */ 857 int get_code_end (void); 858 859 /* low-level timing info */ 860 int getrtsecs (void); 861 int currticks (void); 862 863 /* Clear the screen. */ 864 void cls (void); 865 866 /* Turn on/off cursor. */ 867 int setcursor (int on); 868 869 /* Get the current cursor position (where 0,0 is the top left hand 870 corner of the screen). Returns packed values, (RET >> 8) is x, 871 (RET & 0xff) is y. */ 872 int getxy (void); 873 874 /* Set the cursor position. */ 875 void gotoxy (int x, int y); 876 877 /* Displays an ASCII character. IBM displays will translate some 878 characters to special graphical ones (see the DISP_* constants). */ 879 void grub_putchar (int c); 880 881 /* Wait for a keypress, and return its packed BIOS/ASCII key code. 882 Use ASCII_CHAR(ret) to extract the ASCII code. */ 883 int getkey (void); 884 885 /* Like GETKEY, but doesn't block, and returns -1 if no keystroke is 886 available. */ 887 int checkkey (void); 888 889 /* Low-level disk I/O */ 890 int get_diskinfo (int drive, struct geometry *geometry); 891 int biosdisk (int subfunc, int drive, struct geometry *geometry, 892 unsigned int sector, int nsec, int segment); 893 void stop_floppy (void); 894 895 /* Command-line interface functions. */ 896 #ifndef STAGE1_5 897 898 /* The flags for the builtins. */ 899 #define BUILTIN_CMDLINE 0x1 /* Run in the command-line. */ 900 #define BUILTIN_MENU 0x2 /* Run in the menu. */ 901 #define BUILTIN_TITLE 0x4 /* Only for the command title. */ 902 #define BUILTIN_SCRIPT 0x8 /* Run in the script. */ 903 #define BUILTIN_NO_ECHO 0x10 /* Don't print command on booting. */ 904 #define BUILTIN_HELP_LIST 0x20 /* Show help in listing. */ 905 906 /* The table for a builtin. */ 907 struct builtin 908 { 909 /* The command name. */ 910 char *name; 911 /* The callback function. */ 912 int (*func) (char *, int); 913 /* The combination of the flags defined above. */ 914 int flags; 915 /* The short version of the documentation. */ 916 char *short_doc; 917 /* The long version of the documentation. */ 918 char *long_doc; 919 }; 920 921 /* All the builtins are registered in this. */ 922 extern struct builtin *builtin_table[]; 923 924 /* The constants for kernel types. */ 925 typedef enum 926 { 927 KERNEL_TYPE_NONE, /* None is loaded. */ 928 KERNEL_TYPE_MULTIBOOT, /* Multiboot. */ 929 KERNEL_TYPE_LINUX, /* Linux. */ 930 KERNEL_TYPE_BIG_LINUX, /* Big Linux. */ 931 KERNEL_TYPE_FREEBSD, /* FreeBSD. */ 932 KERNEL_TYPE_NETBSD, /* NetBSD. */ 933 KERNEL_TYPE_CHAINLOADER /* Chainloader. */ 934 } 935 kernel_t; 936 937 extern kernel_t kernel_type; 938 extern int show_menu; 939 extern int grub_timeout; 940 941 void init_builtins (void); 942 void init_config (void); 943 char *skip_to (int after_equal, char *cmdline); 944 struct builtin *find_command (char *command); 945 void print_cmdline_message (int forever); 946 void enter_cmdline (char *heap, int forever); 947 int run_script (char *script, char *heap); 948 #endif 949 950 /* C library replacement functions with identical semantics. */ 951 void grub_printf (const char *format,...); 952 int grub_sprintf (char *buffer, const char *format, ...); 953 int grub_tolower (int c); 954 int grub_isspace (int c); 955 int grub_strncat (char *s1, const char *s2, int n); 956 void grub_memcpy(void *dest, const void *src, int len); 957 void *grub_memmove (void *to, const void *from, int len); 958 void *grub_memset (void *start, int c, int len); 959 int grub_strncat (char *s1, const char *s2, int n); 960 char *grub_strstr (const char *s1, const char *s2); 961 int grub_memcmp (const char *s1, const char *s2, int n); 962 int grub_strcmp (const char *s1, const char *s2); 963 int grub_strlen (const char *str); 964 char *grub_strcpy (char *dest, const char *src); 965 char *grub_strchr (char *str, char c); 966 967 void noisy_printf (const char *format,...); 968 969 #ifndef GRUB_UTIL 970 typedef unsigned long grub_jmp_buf[6]; 971 #else 972 /* In the grub shell, use the libc jmp_buf instead. */ 973 # include <setjmp.h> 974 # define grub_jmp_buf jmp_buf 975 #endif 976 977 #ifdef GRUB_UTIL 978 # define grub_setjmp setjmp 979 # define grub_longjmp longjmp 980 #else /* ! GRUB_UTIL */ 981 int grub_setjmp (grub_jmp_buf env); 982 void grub_longjmp (grub_jmp_buf env, int val); 983 #endif /* ! GRUB_UTIL */ 984 985 /* The environment for restarting Stage 2. */ 986 extern grub_jmp_buf restart_env; 987 /* The environment for restarting the command-line interface. */ 988 extern grub_jmp_buf restart_cmdline_env; 989 990 /* misc */ 991 void init_page (void); 992 void print_error (void); 993 char *convert_to_ascii (char *buf, int c, ...); 994 int get_cmdline (char *prompt, char *cmdline, int maxlen, 995 int echo_char, int history); 996 int substring (const char *s1, const char *s2); 997 int nul_terminate (char *str); 998 int get_based_digit (int c, int base); 999 int safe_parse_maxint (char **str_ptr, int *myint_ptr); 1000 int memcheck (unsigned long start, unsigned long len); 1001 void grub_putstr (const char *str); 1002 1003 #ifndef NO_DECOMPRESSION 1004 /* Compression support. */ 1005 int gunzip_test_header (void); 1006 int gunzip_read (char *buf, int len); 1007 #endif /* NO_DECOMPRESSION */ 1008 1009 int rawread (int drive, unsigned int sector, int byte_offset, int byte_len, 1010 char *buf); 1011 int devread (unsigned int sector, int byte_offset, int byte_len, char *buf); 1012 int rawwrite (int drive, unsigned int sector, char *buf); 1013 int devwrite (unsigned int sector, int sector_len, char *buf); 1014 1015 /* Parse a device string and initialize the global parameters. */ 1016 char *set_device (char *device); 1017 int open_device (void); 1018 int real_open_partition (int flags); 1019 int open_partition (void); 1020 int next_partition (unsigned long drive, unsigned long dest, 1021 unsigned long *partition, int *type, 1022 unsigned long *start, unsigned long *len, 1023 unsigned long *offset, int *entry, 1024 unsigned long *ext_offset, 1025 unsigned long *gpt_offset, int *gpt_count, 1026 int *gpt_size, char *buf); 1027 1028 /* Sets device to the one represented by the SAVED_* parameters. */ 1029 int make_saved_active (void); 1030 1031 /* Set or clear the current root partition's hidden flag. */ 1032 int set_partition_hidden_flag (int hidden); 1033 1034 /* Open a file or directory on the active device, using GRUB's 1035 internal filesystem support. */ 1036 int grub_open (char *filename); 1037 1038 /* Read LEN bytes into BUF from the file that was opened with 1039 GRUB_OPEN. If LEN is -1, read all the remaining data in the file. */ 1040 int grub_read (char *buf, int len); 1041 1042 /* Reposition a file offset. */ 1043 int grub_seek (int offset); 1044 1045 /* Close a file. */ 1046 void grub_close (void); 1047 1048 /* List the contents of the directory that was opened with GRUB_OPEN, 1049 printing all completions. */ 1050 int dir (char *dirname); 1051 1052 int set_bootdev (int hdbias); 1053 1054 /* Display statistics on the current active device. */ 1055 void print_fsys_type (void); 1056 1057 /* Display device and filename completions. */ 1058 void print_a_completion (char *filename); 1059 int print_completions (int is_filename, int is_completion); 1060 1061 /* Copies the current partition data to the desired address. */ 1062 void copy_current_part_entry (char *buf); 1063 1064 #ifndef STAGE1_5 1065 void bsd_boot (kernel_t type, int bootdev, char *arg) 1066 __attribute__ ((noreturn)); 1067 1068 /* Define flags for load_image here. */ 1069 /* Don't pass a Linux's mem option automatically. */ 1070 #define KERNEL_LOAD_NO_MEM_OPTION (1 << 0) 1071 1072 kernel_t load_image (char *kernel, char *arg, kernel_t suggested_type, 1073 unsigned long load_flags); 1074 1075 int load_module (char *module, char *arg); 1076 int load_initrd (char *initrd); 1077 1078 int check_password(char *entered, char* expected, password_t type); 1079 #endif 1080 1081 void init_bios_info (void); 1082 1083 #endif /* ASM_FILE */ 1084 1085 #endif /* ! GRUB_SHARED_HEADER */ 1086