shared.h

grub4dos-0.4.4-2008- 08-src.zip

  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,

  ERR_DEFAULT_FILE,
  ERR_DEL_MEM_DRIVE,
  ERR_DISABLE_A20,
  ERR_DOS_BACKUP,
  ERR_ENABLE_A20,
  ERR_EXTENDED_PARTITION,
  ERR_FILENAME_FORMAT,
  ERR_HD_VOL_START_0,
  ERR_INT13_ON_HOOK,
  ERR_INT13_OFF_HOOK,
  ERR_INVALID_BOOT_CS,
  ERR_INVALID_BOOT_IP,
  ERR_INVALID_FLOPPIES,
  ERR_INVALID_HARDDRIVES,
  ERR_INVALID_HEADS,
  ERR_INVALID_LOAD_LENGTH,
  ERR_INVALID_LOAD_OFFSET,
  ERR_INVALID_LOAD_SEGMENT,
  ERR_INVALID_SECTORS,
  ERR_INVALID_SKIP_LENGTH,
  ERR_INVALID_RAM_DRIVE,
  ERR_IN_SITU_FLOPPY,
  ERR_IN_SITU_MEM,
  ERR_MD_BASE,
  ERR_NON_CONTIGUOUS,
  ERR_NO_DRIVE_MAPPED,
  ERR_NO_HEADS,
  ERR_NO_SECTORS,
  ERR_PARTITION_TABLE_FULL,
  ERR_RD_BASE,
  ERR_SPECIFY_GEOM,
  ERR_SPECIFY_MEM,
  ERR_SPECIFY_RESTRICTION,
//  ERR_INVALID_RD_BASE,
//  ERR_INVALID_RD_SIZE,
  ERR_MD5_FORMAT,

  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;
extern int quit_print;

#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);
#define DEBUG_SLEEP {}
#else
/* print debug message on startup if the DEBUG_KEY is pressed. */
extern int debug_boot;
extern int console_getkey (void);
//#define SLEEP {unsigned long i;for (i=0;i<0xFFFFFFFF;i++);}
#define DEBUG_SLEEP {if (debug_boot) console_getkey ();}
#endif

extern void hexdump(unsigned long,char*,int);

#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;
extern const char *preset_menu;

/* 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) (unsigned long, unsigned long, unsigned long);
extern void (*disk_read_func) (unsigned long, unsigned long, unsigned long);

#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;

extern inline unsigned long log2_tmp (unsigned long word);
extern void unicode_to_utf8 (unsigned short *filename, unsigned char *utf8, unsigned long n);

/* 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 unsigned long current_slice;

extern int buf_drive;
extern int buf_track;
extern struct geometry buf_geom;
extern struct geometry tmp_geom;
extern struct geometry fd_geom[4];
extern struct geometry hd_geom[4];

/* these are the current file position and maximum file position */
extern unsigned long filepos;
extern unsigned long filemax;

extern unsigned long emu_iso_sector_size_2048;

/*
 *  Common BIOS/boot data.
 */

extern struct multiboot_info mbi;
extern unsigned long saved_drive;
extern unsigned long saved_partition;
extern char saved_dir[256];
extern unsigned long memdisk_raw;	/* raw mode as in memdisk */
extern unsigned long a20_keep_on;	/* keep a20 on after RAM drive sector access */
extern unsigned long lba_cd_boot;	/* LBA of no-emulation boot image, in 2048-byte sectors */
extern unsigned long safe_mbr_hook;	/* safe mbr hook flags used by Win9x */
extern unsigned long int13_scheme;	/* controls disk access methods in emulation */
extern unsigned long atapi_dev_count;	/* ATAPI CDROM DRIVE COUNT */
extern unsigned long *reg_base_addr_append;
extern unsigned long init_atapi(void);
extern unsigned long min_cdrom_id;	/* MINIMUM ATAPI CDROM DRIVE NUMBER */
extern unsigned long cdrom_drive;
//extern unsigned long cdrom_drives[];
//#ifndef cdrom_drive
//#define cdrom_drive (*cdrom_drives)
//#endif
extern unsigned long force_cdrom_as_boot_device;
extern unsigned long ram_drive;
extern unsigned long rd_base;
extern unsigned long rd_size;
extern unsigned long saved_mem_upper;
extern unsigned long saved_mem_lower;
extern unsigned long saved_mmap_addr;
extern unsigned long saved_mmap_length;
#ifndef STAGE1_5
extern unsigned long extended_memory;
extern unsigned long init_free_mem_start;
#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));

struct drive_map_slot
{
	/* Remember to update DRIVE_MAP_SLOT_SIZE once this is modified.
	 * The struct size must be a multiple of 4.
	 */

	  /* X=max_sector bit 7: read only or fake write */
	  /* Y=to_sector  bit 6: safe boot or fake write */
	  /* ------------------------------------------- */
	  /* X Y: meaning of restrictions imposed on map */
	  /* ------------------------------------------- */
	  /* 1 1: read only=0, fake write=1, safe boot=0 */
	  /* 1 0: read only=1, fake write=0, safe boot=0 */
	  /* 0 1: read only=0, fake write=0, safe boot=1 */
	  /* 0 0: read only=0, fake write=0, safe boot=0 */

	unsigned char from_drive;
	unsigned char to_drive;		/* 0xFF indicates a memdrive */
	unsigned char max_head;
	unsigned char max_sector;	/* bit 7: read only */
					/* bit 6: disable lba */

	unsigned short to_cylinder;	/* max cylinder of the TO drive */
					/* bit 15:  TO  drive support LBA */
					/* bit 14:  TO  drive is CDROM(with big 2048-byte sector) */
					/* bit 13: FROM drive is CDROM(with big 2048-byte sector) */

	unsigned char to_head;		/* max head of the TO drive */
	unsigned char to_sector;	/* max sector of the TO drive */
					/* bit 7: in-situ */
					/* bit 6: fake-write or safe-boot */

	unsigned long start_sector;
	unsigned long start_sector_hi;	/* hi dword of the 64-bit value */
	unsigned long sector_count;
	unsigned long sector_count_hi;	/* hi dword of the 64-bit value */
};

/* Copy MAP to the drive map and set up int13_handler.  */
void set_int13_handler (struct drive_map_slot *map);

/* Restore the original int13 handler.  */
int unset_int13_handler (int check_status_only);

/* 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.  */