/* shared.h - definitions used in all GRUB-specific code */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Generic defines to use anywhere
*/
#ifndef GRUB_SHARED_HEADER
#define GRUB_SHARED_HEADER 1
#include <config.h>
/* Add an underscore to a C symbol in assembler code if needed. */
#ifdef HAVE_ASM_USCORE
# define EXT_C(sym) _ ## sym
#else
# define EXT_C(sym) sym
#endif
/* Maybe redirect memory requests through grub_scratch_mem. */
#ifdef GRUB_UTIL
extern char *grub_scratch_mem;
# define RAW_ADDR(x) ((x) + (int) grub_scratch_mem)
# define RAW_SEG(x) (RAW_ADDR ((x) << 4) >> 4)
#else
# define RAW_ADDR(x) (x)
# define RAW_SEG(x) (x)
#endif
/*
* Integer sizes
*/
#define MAXINT 0x7FFFFFFF
/* Maximum command line size. Before you blindly increase this value,
see the comment in char_io.c (get_cmdline). */
#define MAX_CMDLINE 1600
#define NEW_HEAPSIZE 1500
/* 512-byte scratch area */
#define SCRATCHADDR RAW_ADDR (0x77e00)
#define SCRATCHSEG RAW_SEG (0x77e0)
/*
* This is the location of the raw device buffer. It is 31.5K
* in size.
*/
#define BUFFERLEN 0x7e00
#define BUFFERADDR RAW_ADDR (0x70000)
#define BUFFERSEG RAW_SEG (0x7000)
#define BOOT_PART_TABLE RAW_ADDR (0x07be)
/*
* BIOS disk defines
*/
#define BIOSDISK_READ 0x0
#define BIOSDISK_WRITE 0x1
#define BIOSDISK_ERROR_GEOMETRY 0x100
#define BIOSDISK_FLAG_LBA_EXTENSION 0x1
#define BIOSDISK_FLAG_CDROM 0x2
/*
* This is the filesystem (not raw device) buffer.
* It is 32K in size, do not overrun!
*/
#define FSYS_BUFLEN 0x8000
#define FSYS_BUF RAW_ADDR (0x68000)
/* Command-line buffer for Multiboot kernels and modules. This area
includes the area into which Stage 1.5 and Stage 1 are loaded, but
that's no problem. */
#define MB_CMDLINE_BUF RAW_ADDR (0x2000)
#define MB_CMDLINE_BUFLEN 0x6000
/* The buffer for the password. */
#define PASSWORD_BUF RAW_ADDR (0x78000)
#define PASSWORD_BUFLEN 0x200
/* THe buffer for the filename of "/boot/grub/default". */
#define DEFAULT_FILE_BUF (PASSWORD_BUF + PASSWORD_BUFLEN)
#define DEFAULT_FILE_BUFLEN 0x60
/* The buffer for the command-line. */
#define CMDLINE_BUF (DEFAULT_FILE_BUF + DEFAULT_FILE_BUFLEN)
#define CMDLINE_BUFLEN MAX_CMDLINE
/* The kill buffer for the command-line. */
#define KILL_BUF (CMDLINE_BUF + CMDLINE_BUFLEN)
#define KILL_BUFLEN MAX_CMDLINE
/* The history buffer for the command-line. */
#define HISTORY_BUF (KILL_BUF + KILL_BUFLEN)
#define HISTORY_SIZE 5
#define HISTORY_BUFLEN (MAX_CMDLINE * HISTORY_SIZE)
/* The buffer for the completion. */
#define COMPLETION_BUF (HISTORY_BUF + HISTORY_BUFLEN)
#define COMPLETION_BUFLEN MAX_CMDLINE
/* The buffer for the unique string. */
#define UNIQUE_BUF (COMPLETION_BUF + COMPLETION_BUFLEN)
#define UNIQUE_BUFLEN MAX_CMDLINE
/* The buffer for the menu entries. */
#define MENU_BUF (UNIQUE_BUF + UNIQUE_BUFLEN)
#define MENU_BUFLEN (0x8000 + PASSWORD_BUF - MENU_BUF)
/* The size of the drive map. */
#define DRIVE_MAP_SIZE 8
/* The size of the key map. */
#define KEY_MAP_SIZE 128
/* The size of the io map. */
#define IO_MAP_SIZE 128
/*
* Linux setup parameters
*/
#define LINUX_MAGIC_SIGNATURE 0x53726448 /* "HdrS" */
#define LINUX_DEFAULT_SETUP_SECTS 4
#define LINUX_FLAG_CAN_USE_HEAP 0x80
#define LINUX_INITRD_MAX_ADDRESS 0x38000000
#define LINUX_MAX_SETUP_SECTS 64
#define LINUX_BOOT_LOADER_TYPE 0x71
#define LINUX_HEAP_END_OFFSET (0x9000 - 0x200)
#define LINUX_BZIMAGE_ADDR RAW_ADDR (0x100000)
#define LINUX_ZIMAGE_ADDR RAW_ADDR (0x10000)
#define LINUX_OLD_REAL_MODE_ADDR RAW_ADDR (0x90000)
#define LINUX_SETUP_STACK 0x9000
#define LINUX_FLAG_BIG_KERNEL 0x1
/* Linux's video mode selection support. Actually I hate it! */
#define LINUX_VID_MODE_NORMAL 0xFFFF
#define LINUX_VID_MODE_EXTENDED 0xFFFE
#define LINUX_VID_MODE_ASK 0xFFFD
#define LINUX_CL_OFFSET 0x9000
#define LINUX_CL_END_OFFSET 0x90FF
#define LINUX_SETUP_MOVE_SIZE 0x9100
#define LINUX_CL_MAGIC 0xA33F
/*
* General disk stuff
*/
#define SECTOR_SIZE 0x200
#define SECTOR_BITS 9
#define BIOS_FLAG_FIXED_DISK 0x80
#define BOOTSEC_LOCATION RAW_ADDR (0x7C00)
#define BOOTSEC_SIGNATURE 0xAA55
#define BOOTSEC_BPB_OFFSET 0x3
#define BOOTSEC_BPB_LENGTH 0x3B
#define BOOTSEC_BPB_SYSTEM_ID 0x3
#define BOOTSEC_BPB_HIDDEN_SECTORS 0x1C
#define BOOTSEC_PART_OFFSET 0x1BE
#define BOOTSEC_PART_LENGTH 0x40
#define BOOTSEC_SIG_OFFSET 0x1FE
#define BOOTSEC_LISTSIZE 8
/* Not bad, perhaps. */
#define NETWORK_DRIVE 0x20
/*
* GRUB specific information
* (in LSB order)
*/
#include <stage1.h>
#define STAGE2_VER_MAJ_OFFS 0x6
#define STAGE2_INSTALLPART 0x8
#define STAGE2_SAVED_ENTRYNO 0xc
#define STAGE2_STAGE2_ID 0x10
#define STAGE2_FORCE_LBA 0x11
#define STAGE2_VER_STR_OFFS 0x12
/* Stage 2 identifiers */
#define STAGE2_ID_STAGE2 0
#define STAGE2_ID_FFS_STAGE1_5 1
#define STAGE2_ID_E2FS_STAGE1_5 2
#define STAGE2_ID_FAT_STAGE1_5 3
#define STAGE2_ID_MINIX_STAGE1_5 4
#define STAGE2_ID_REISERFS_STAGE1_5 5
#define STAGE2_ID_VSTAFS_STAGE1_5 6
#define STAGE2_ID_JFS_STAGE1_5 7
#define STAGE2_ID_XFS_STAGE1_5 8
#define STAGE2_ID_ISO9660_STAGE1_5 9
#define STAGE2_ID_UFS2_STAGE1_5 10
#ifndef STAGE1_5
# define STAGE2_ID STAGE2_ID_STAGE2
#else
# if defined(FSYS_FFS)
# define STAGE2_ID STAGE2_ID_FFS_STAGE1_5
# elif defined(FSYS_EXT2FS)
# define STAGE2_ID STAGE2_ID_E2FS_STAGE1_5
# elif defined(FSYS_FAT)
# define STAGE2_ID STAGE2_ID_FAT_STAGE1_5
# elif defined(FSYS_MINIX)
# define STAGE2_ID STAGE2_ID_MINIX_STAGE1_5
# elif defined(FSYS_REISERFS)
# define STAGE2_ID STAGE2_ID_REISERFS_STAGE1_5
# elif defined(FSYS_VSTAFS)
# define STAGE2_ID STAGE2_ID_VSTAFS_STAGE1_5
# elif defined(FSYS_JFS)
# define STAGE2_ID STAGE2_ID_JFS_STAGE1_5
# elif defined(FSYS_XFS)
# define STAGE2_ID STAGE2_ID_XFS_STAGE1_5
# elif defined(FSYS_ISO9660)
# define STAGE2_ID STAGE2_ID_ISO9660_STAGE1_5
# elif defined(FSYS_UFS2)
# define STAGE2_ID STAGE2_ID_UFS2_STAGE1_5
# else
# error "unknown Stage 2"
# endif
#endif
/*
* defines for use when switching between real and protected mode
*/
#define CR0_PE_ON 0x1
#define CR0_PE_OFF 0xfffffffe
#define PROT_MODE_CSEG 0x8
#define PROT_MODE_DSEG 0x10
#define PSEUDO_RM_CSEG 0x18
#define PSEUDO_RM_DSEG 0x20
#define STACKOFF (0x2000 - 0x10)
#define PROTSTACKINIT (FSYS_BUF - 0x10)
/*
* Assembly code defines
*
* "EXT_C" is assumed to be defined in the Makefile by the configure
* command.
*/
#define ENTRY(x) .globl EXT_C(x) ; EXT_C(x):
#define VARIABLE(x) ENTRY(x)
#define K_RDWR 0x60 /* keyboard data & cmds (read/write) */
#define K_STATUS 0x64 /* keyboard status */
#define K_CMD 0x64 /* keybd ctlr command (write-only) */
#define K_OBUF_FUL 0x01 /* output buffer full */
#define K_IBUF_FUL 0x02 /* input buffer full */
#define KC_CMD_WIN 0xd0 /* read output port */
#define KC_CMD_WOUT 0xd1 /* write output port */
#define KB_OUTPUT_MASK 0xdd /* enable output buffer full interrupt
enable data line
enable clock line */
#define KB_A20_ENABLE 0x02
/* Codes for getchar. */
#define ASCII_CHAR(x) ((x) & 0xFF)
#if !defined(GRUB_UTIL) || !defined(HAVE_LIBCURSES)
# define KEY_LEFT 0x4B00
# define KEY_RIGHT 0x4D00
# define KEY_UP 0x4800
# define KEY_DOWN 0x5000
# define KEY_IC 0x5200 /* insert char */
# define KEY_DC 0x5300 /* delete char */
# define KEY_BACKSPACE 0x0008
# define KEY_HOME 0x4700
# define KEY_END 0x4F00
# define KEY_NPAGE 0x5100
# define KEY_PPAGE 0x4900
# define A_NORMAL 0x7
# define A_REVERSE 0x70
#elif defined(HAVE_NCURSES_CURSES_H)
# include <ncurses/curses.h>
#elif defined(HAVE_NCURSES_H)
# include <ncurses.h>
#elif defined(HAVE_CURSES_H)
# include <curses.h>
#endif
/* In old BSD curses, A_NORMAL and A_REVERSE are not defined, so we
define them here if they are undefined. */
#ifndef A_NORMAL
# define A_NORMAL 0
#endif /* ! A_NORMAL */
#ifndef A_REVERSE
# ifdef A_STANDOUT
# define A_REVERSE A_STANDOUT
# else /* ! A_STANDOUT */
# define A_REVERSE 0
# endif /* ! A_STANDOUT */
#endif /* ! A_REVERSE */
/* Define ACS_* ourselves, since the definitions are not consistent among
various curses implementations. */
#undef ACS_ULCORNER
#undef ACS_URCORNER
#undef ACS_LLCORNER
#undef ACS_LRCORNER
#undef ACS_HLINE
#undef ACS_VLINE
#undef ACS_LARROW
#undef ACS_RARROW
#undef ACS_UARROW
#undef ACS_DARROW
#define ACS_ULCORNER '+'
#define ACS_URCORNER '+'
#define ACS_LLCORNER '+'
#define ACS_LRCORNER '+'
#define ACS_HLINE '-'
#define ACS_VLINE '|'
#define ACS_LARROW '<'
#define ACS_RARROW '>'
#define ACS_UARROW '^'
#define ACS_DARROW 'v'
/* Special graphics characters for IBM displays. */
#define DISP_UL 218
#define DISP_UR 191
#define DISP_LL 192
#define DISP_LR 217
#define DISP_HORIZ 196
#define DISP_VERT 179
#define DISP_LEFT 0x1b
#define DISP_RIGHT 0x1a
#define DISP_UP 0x18
#define DISP_DOWN 0x19
/* Remap some libc-API-compatible function names so that we prevent
circularararity. */
#ifndef WITHOUT_LIBC_STUBS
#define memmove grub_memmove
#define memcpy grub_memmove /* we don't need a separate memcpy */
#define memset grub_memset
#define isspace grub_isspace
#define printf grub_printf
#define sprintf grub_sprintf
#undef putchar
#define putchar grub_putchar
#define strncat grub_strncat
#define strstr grub_strstr
#define memcmp grub_memcmp
#define strcmp grub_strcmp
#define tolower grub_tolower
#define strlen grub_strlen
#define strcpy grub_strcpy
#endif /* WITHOUT_LIBC_STUBS */
#ifndef ASM_FILE
/*
* Below this should be ONLY defines and other constructs for C code.
*/
/* multiboot stuff */
#include "mb_header.h"
#include "mb_info.h"
/* For the Linux/i386 boot protocol version 2.03. */
struct linux_kernel_header
{
char code1[0x0020];
unsigned short cl_magic; /* Magic number 0xA33F */
unsigned short cl_offset; /* The offset of command line */
char code2[0x01F1 - 0x0020 - 2 - 2];
unsigned char setup_sects; /* The size of the setup in sectors */
unsigned short root_flags; /* If the root is mounted readonly */
unsigned short syssize; /* obsolete */
unsigned short swap_dev; /* obsolete */
unsigned short ram_size; /* obsolete */
unsigned short vid_mode; /* Video mode control */
unsigned short root_dev; /* Default root device number */
unsigned short boot_flag; /* 0xAA55 magic number */
unsigned short jump; /* Jump instruction */
unsigned long header; /* Magic signature "HdrS" */
unsigned short version; /* Boot protocol version supported */
unsigned long realmode_swtch; /* Boot loader hook */
unsigned long start_sys; /* Points to kernel version string */
unsigned char type_of_loader; /* Boot loader identifier */
unsigned char loadflags; /* Boot protocol option flags */
unsigned short setup_move_size; /* Move to high memory size */
unsigned long code32_start; /* Boot loader hook */
unsigned long ramdisk_image; /* initrd load address */
unsigned long ramdisk_size; /* initrd size */
unsigned long bootsect_kludge; /* obsolete */
unsigned short heap_end_ptr; /* Free memory after setup end */
unsigned short pad1; /* Unused */
char *cmd_line_ptr; /* Points to the kernel command line */
unsigned long initrd_addr_max; /* The highest address of initrd */
} __attribute__ ((packed));
/* Memory map address range descriptor used by GET_MMAP_ENTRY. */
struct mmar_desc
{
unsigned long desc_len; /* Size of this descriptor. */
unsigned long long addr; /* Base address. */
unsigned long long length; /* Length in bytes. */
unsigned long type; /* Type of address range. */
} __attribute__ ((packed));
/* VBE controller information. */
struct vbe_controller
{
unsigned char signature[4];
unsigned short version;
unsigned long oem_string;
unsigned long capabilities;
unsigned long video_mode;
unsigned short total_memory;
unsigned short oem_software_rev;
unsigned long oem_vendor_name;
unsigned long oem_product_name;
unsigned long oem_product_rev;
unsigned char reserved[222];
unsigned char oem_data[256];
} __attribute__ ((packed));
/* VBE mode information. */
struct vbe_mode
{
unsigned short mode_attributes;
unsigned char win_a_attributes;
unsigned char win_b_attributes;
unsigned short win_granularity;
unsigned short win_size;
unsigned short win_a_segment;
unsigned short win_b_segment;
unsigned long win_func;
unsigned short bytes_per_scanline;
/* >=1.2 */
unsigned short x_resolution;
unsigned short y_resolution;
unsigned char x_char_size;
unsigned char y_char_size;
unsigned char number_of_planes;
unsigned char bits_per_pixel;
unsigned char number_of_banks;
unsigned char memory_model;
unsigned char bank_size;
unsigned char number_of_image_pages;
unsigned char reserved0;
/* direct color */
unsigned char red_mask_size;
unsigned char red_field_position;
unsigned char green_mask_size;
unsigned char green_field_position;
unsigned char blue_mask_size;
unsigned char blue_field_position;
unsigned char reserved_mask_size;
unsigned char reserved_field_position;
unsigned char direct_color_mode_info;
/* >=2.0 */
unsigned long phys_base;
unsigned long reserved1;
unsigned short reversed2;
/* >=3.0 */
unsigned short linear_bytes_per_scanline;
unsigned char banked_number_of_image_pages;
unsigned char linear_number_of_image_pages;
unsigned char linear_red_mask_size;
unsigned char linear_red_field_position;
unsigned char linear_green_mask_size;
unsigned char linear_green_field_position;
unsigned char linear_blue_mask_size;
unsigned char linear_blue_field_position;
unsigned char linear_reserved_mask_size;
unsigned char linear_reserved_field_position;
unsigned long max_pixel_clock;
unsigned char reserved3[189];
} __attribute__ ((packed));
#undef NULL
#define NULL ((void *) 0)
/* Error codes (descriptions are in common.c) */
typedef enum
{
ERR_NONE = 0,
ERR_BAD_FILENAME,
ERR_BAD_FILETYPE,
ERR_BAD_GZIP_DATA,
ERR_BAD_GZIP_HEADER,
ERR_BAD_PART_TABLE,
ERR_BAD_VERSION,
ERR_BELOW_1MB,
ERR_BOOT_COMMAND,
ERR_BOOT_FAILURE,
ERR_BOOT_FEATURES,
ERR_DEV_FORMAT,
ERR_DEV_VALUES,
ERR_EXEC_FORMAT,
ERR_FILELENGTH,
ERR_FILE_NOT_FOUND,
ERR_FSYS_CORRUPT,
ERR_FSYS_MOUNT,
ERR_GEOM,
ERR_NEED_LX_KERNEL,
ERR_NEED_MB_KERNEL,
ERR_NO_DISK,
ERR_NO_PART,
ERR_NUMBER_PARSING,
ERR_OUTSIDE_PART,
ERR_READ,
ERR_SYMLINK_LOOP,
ERR_UNRECOGNIZED,
ERR_WONT_FIT,
ERR_WRITE,
ERR_BAD_ARGUMENT,
ERR_UNALIGNED,
ERR_PRIVILEGED,
ERR_DEV_NEED_INIT,
ERR_NO_DISK_SPACE,
ERR_NUMBER_OVERFLOW,
MAX_ERR_NUM
} grub_error_t;
extern unsigned long install_partition;
extern unsigned long boot_drive;
extern unsigned long install_second_sector;
extern struct apm_info apm_bios_info;
extern unsigned long boot_part_addr;
extern int saved_entryno;
extern unsigned char force_lba;
extern char version_string[];
extern char config_file[];
extern unsigned long linux_text_len;
extern char *linux_data_tmp_addr;
extern char *linux_data_real_addr;
#ifdef GRUB_UTIL
/* If not using config file, this variable is set to zero,
otherwise non-zero. */
extern int use_config_file;
/* If using the preset menu, this variable is set to non-zero,
otherwise zero. */
extern int use_preset_menu;
/* If not using curses, this variable is set to zero, otherwise non-zero. */
extern int use_curses;
/* The flag for verbose messages. */
extern int verbose;
/* The flag for read-only. */
extern int read_only;
/* The number of floppies to be probed. */
extern int floppy_disks;
/* The map between BIOS drives and UNIX device file names. */
extern char **device_map;
/* The filename which stores the information about a device map. */
extern char *device_map_file;
/* The array of geometries. */
extern struct geometry *disks;
/* Assign DRIVE to a device name DEVICE. */
extern void assign_device_name (int drive, const char *device);
#endif
#ifndef STAGE1_5
/* GUI interface variables. */
# define MAX_FALLBACK_ENTRIES 8
extern int fallback_entries[MAX_FALLBACK_ENTRIES];
extern int fallback_entryno;
extern int default_entry;
extern int current_entryno;
/* The constants for password types. */
typedef enum
{
PASSWORD_PLAIN,
PASSWORD_MD5,
PASSWORD_UNSUPPORTED
}
password_t;
extern char *password;
extern password_t password_type;
extern int auth;
extern char commands[];
/* For `more'-like feature. */
extern int max_lines;
extern int count_lines;
extern int use_pager;
#endif
#ifndef NO_DECOMPRESSION
extern int no_decompression;
extern int compressed_file;
#endif
/* instrumentation variables */
extern void (*disk_read_hook) (int, int, int);
extern void (*disk_read_func) (int, int, int);
#ifndef STAGE1_5
/* The flag for debug mode. */
extern int debug;
#endif /* STAGE1_5 */
extern unsigned long current_drive;
extern unsigned long current_partition;
extern int fsys_type;
/* The information for a disk geometry. The CHS information is only for
DOS/Partition table compatibility, and the real number of sectors is
stored in TOTAL_SECTORS. */
struct geometry
{
/* The number of cylinders */
unsigned long cylinders;
/* The number of heads */
unsigned long heads;
/* The number of sectors */
unsigned long sectors;
/* The total number of sectors */
unsigned long total_sectors;
/* Device sector size */
unsigned long sector_size;
/* Flags */
unsigned long flags;
};
extern unsigned long part_start;
extern unsigned long part_length;
extern int current_slice;
extern int buf_drive;
extern int buf_track;
extern struct geometry buf_geom;
/* these are the current file position and maximum file position */
extern int filepos;
extern int filemax;
/*
* Common BIOS/boot data.
*/
extern struct multiboot_info mbi;
extern unsigned long saved_drive;
extern unsigned long saved_partition;
extern unsigned long cdrom_drive;
#ifndef STAGE1_5
extern unsigned long saved_mem_upper;
extern unsigned long extended_memory;
#endif
/*
* Error variables.
*/
extern grub_error_t errnum;
extern char *err_list[];
/* Simplify declaration of entry_addr. */
typedef void (*entry_func) (int, int, int, int, int, int)
__attribute__ ((noreturn));
extern entry_func entry_addr;
/* Enter the stage1.5/stage2 C code after the stack is set up. */
void cmain (void);
/* Halt the processor (called after an unrecoverable error). */
void stop (void) __attribute__ ((noreturn));
/* Reboot the system. */
void grub_reboot (void) __attribute__ ((noreturn));
/* Halt the system, using APM if possible. If NO_APM is true, don't use
APM even if it is available. */
void grub_halt (int no_apm) __attribute__ ((noreturn));
/* Copy MAP to the drive map and set up int13_handler. */
void set_int13_handler (unsigned short *map);
/* Set up int15_handler. */
void set_int15_handler (void);
/* Restore the original int15 handler. */
void unset_int15_handler (void);
/* Track the int13 handler to probe I/O address space. */
void track_int13 (int drive);
/* The key map. */
extern unsigned short bios_key_map[];
extern unsigned short ascii_key_map[];
extern unsigned short io_map[];
/* calls for direct boot-loader chaining */
void chain_stage1 (unsigned long segment, unsigned long offset,
unsigned long part_table_addr)
__attribute__ ((noreturn));
void chain_stage2 (unsigned long segment, unsigned long offset,
int second_sector)
__attribute__ ((noreturn));
/* do some funky stuff, then boot linux */
void linux_boot (void) __attribute__ ((noreturn));
/* do some funky stuff, then boot bzImage linux */
void big_linux_boot (void) __attribute__ ((noreturn));
/* booting a multiboot executable */
void multi_boot (int start, int mb_info) __attribute__ ((noreturn));
/* If LINEAR is nonzero, then set the Intel processor to linear mode.
Otherwise, bit 20 of all memory accesses is always forced to zero,
causing a wraparound effect for bugwards compatibility with the
8086 CPU. */
void gateA20 (int linear);
/* memory probe routines */
int get_memsize (int type);
int get_eisamemsize (void);
/* Fetch the next entry in the memory map and return the continuation
value. DESC is a pointer to the descriptor buffer, and CONT is the
previous continuation value (0 to get the first entry in the
map). */
int get_mmap_entry (struct mmar_desc *desc, int cont);
/* Get the linear address of a ROM configuration table. Return zero,
if fails. */
unsigned long get_rom_config_table (void);
/* Get APM BIOS information. */
void get_apm_info (void);
/* Get VBE controller information. */
int get_vbe_controller_info (struct vbe_controller *controller);
/* Get VBE mode information. */
int get_vbe_mode_info (int mode_number, struct vbe_mode *mode);
/* Set VBE mode. */
int set_vbe_mode (int mode_number);
/* Return the data area immediately following our code. */
int get_code_end (void);
/* low-level timing info */
int getrtsecs (void);
int currticks (void);
/* Clear the screen. */
void cls (void);
/* Turn on/off cursor. */
int setcursor (int on);
/* Get the current cursor position (where 0,0 is the top left hand
corner of the screen). Returns packed values, (RET >> 8) is x,
(RET & 0xff) is y. */
int getxy (void);
/* Set the cursor position. */
void gotoxy (int x, int y);
/* Displays an ASCII character. IBM displays will translate some
characters to special graphical ones (see the DISP_* constants). */
void grub_putchar (int c);
/* Wait for a keypress, and return its packed BIOS/ASCII key code.
Use ASCII_CHAR(ret) to extract the ASCII code. */
int getkey (void);
/* Like GETKEY, but doesn't block, and returns -1 if no keystroke is
available. */
int checkkey (void);
/* Low-level disk I/O */
int get_diskinfo (int drive, struct geometry *geometry);
int biosdisk (int subfunc, int drive, struct geometry *geometry,
int sector, int nsec, int segment);
void stop_floppy (void);
/* Command-line interface functions. */
#ifndef STAGE1_5
/* The flags for the builtins. */
#define BUILTIN_CMDLINE 0x1 /* Run in the command-line. */
#define BUILTIN_MENU 0x2 /* Run in the menu. */
#define BUILTIN_TITLE 0x4 /* Only for the command title. */
#define BUILTIN_SCRIPT 0x8 /* Run in the script. */
#define BUILTIN_NO_ECHO 0x10 /* Don't print command on booting. */
#define BUILTIN_HELP_LIST 0x20 /* Show help in listing. */
/* The table for a builtin. */
struct builtin
{
/* The command name. */
char *name;
/* The callback function. */
int (*func) (char *, int);
/* The combination of the flags defined above. */
int flags;
/* The short version of the documentation. */
char *short_doc;
/* The long version of the documentation. */
char *long_doc;
};
/* All the builtins are registered in this. */
extern struct builtin *builtin_table[];
/* The constants for kernel types. */
typedef enum
{
KERNEL_TYPE_NONE, /* None is loaded. */
KERNEL_TYPE_MULTIBOOT, /* Multiboot. */
KERNEL_TYPE_LINUX, /* Linux. */
KERNEL_TYPE_BIG_LINUX, /* Big Linux. */
KERNEL_TYPE_FREEBSD, /* FreeBSD. */
KERNEL_TYPE_NETBSD, /* NetBSD. */
KERNEL_TYPE_CHAINLOADER /* Chainloader. */
}
kernel_t;
extern kernel_t kernel_type;
extern int show_menu;
extern int grub_timeout;
void init_builtins (void);
void init_config (void);
char *skip_to (int after_equal, char *cmdline);
struct builtin *find_command (char *command);
void print_cmdline_message (int forever);
void enter_cmdline (char *heap, int forever);
int run_script (char *script, char *heap);
#endif
/* C library replacement functions with identical semantics. */
void grub_printf (const char *format,...);
int grub_sprintf (char *buffer, const char *format, ...);
int grub_tolower (int c);
int grub_isspace (int c);
int grub_strncat (char *s1, const char *s2, int n);
void *grub_memmove (void *to, const void *from, int len);
void *grub_memset (void *start, int c, int len);
int grub_strncat (char *s1, const char *s2, int n);
char *grub_strstr (const char *s1, const char *s2);
int grub_memcmp (const char *s1, const char *s2, int n);
int grub_strcmp (const char *s1, const char *s2);
int grub_strlen (const char *str);
char *grub_strcpy (char *dest, const char *src);
#ifndef GRUB_UTIL
typedef unsigned long grub_jmp_buf[6];
#else
/* In the grub shell, use the libc jmp_buf instead. */
# include <setjmp.h>
# define grub_jmp_buf jmp_buf
#endif
#ifdef GRUB_UTIL
# define grub_setjmp setjmp
# define grub_longjmp longjmp
#else /* ! GRUB_UTIL */
int grub_setjmp (grub_jmp_buf env);
void grub_longjmp (grub_jmp_buf env, int val);
#endif /* ! GRUB_UTIL */
/* The environment for restarting Stage 2. */
extern grub_jmp_buf restart_env;
/* The environment for restarting the command-line interface. */
extern grub_jmp_buf restart_cmdline_env;
/* misc */
void init_page (void);
void print_error (void);
char *convert_to_ascii (char *buf, int c, ...);
int get_cmdline (char *prompt, char *cmdline, int maxlen,
int echo_char, int history);
int substring (const char *s1, const char *s2);
int nul_terminate (char *str);
int get_based_digit (int c, int base);
int safe_parse_maxint (char **str_ptr, int *myint_ptr);
int memcheck (int start, int len);
void grub_putstr (const char *str);
#ifndef NO_DECOMPRESSION
/* Compression support. */
int gunzip_test_header (void);
int gunzip_read (char *buf, int len);
#endif /* NO_DECOMPRESSION */
int rawread (int drive, int sector, int byte_offset, int byte_len, char *buf);
int devread (int sector, int byte_offset, int byte_len, char *buf);
int rawwrite (int drive, int sector, char *buf);
int devwrite (int sector, int sector_len, char *buf);
/* Parse a device string and initialize the global parameters. */
char *set_device (char *device);
int open_device (void);
int real_open_partition (int flags);
int open_partition (void);
int next_partition (unsigned long drive, unsigned long dest,
unsigned long *partition, int *type,
unsigned long *start, unsigned long *len,
unsigned long *offset, int *entry,
unsigned long *ext_offset, char *buf);
/* Sets device to the one represented by the SAVED_* parameters. */
int make_saved_active (void);
/* Set or clear the current root partition's hidden flag. */
int set_partition_hidden_flag (int hidden);
/* Open a file or directory on the active device, using GRUB's
internal filesystem support. */
int grub_open (char *filename);
/* Read LEN bytes into BUF from the file that was opened with
GRUB_OPEN. If LEN is -1, read all the remaining data in the file. */
int grub_read (char *buf, int len);
/* Reposition a file offset. */
int grub_seek (int offset);
/* Close a file. */
void grub_close (void);
/* List the contents of the directory that was opened with GRUB_OPEN,
printing all completions. */
int dir (char *dirname);
int set_bootdev (int hdbias);
/* Display statistics on the current active device. */
void print_fsys_type (void);
/* Display device and filename completions. */
void print_a_completion (char *filename);
int print_completions (int is_filename, int is_completion);
/* Copies the current partition data to the desired address. */
void copy_current_part_entry (char *buf);
#ifndef STAGE1_5
void bsd_boot (kernel_t type, int bootdev, char *arg)
__attribute__ ((noreturn));
/* Define flags for load_image here. */
/* Don't pass a Linux's mem option automatically. */
#define KERNEL_LOAD_NO_MEM_OPTION (1 << 0)
kernel_t load_image (char *kernel, char *arg, kernel_t suggested_type,
unsigned long load_flags);
int load_module (char *module, char *arg);
int load_initrd (char *initrd);
int check_password(char *entered, char* expected, password_t type);
#endif
void init_bios_info (void);
#endif /* ASM_FILE */
#endif /* ! GRUB_SHARED_HEADER */