stage2/pc_slice.h - platform/external/grub - Git at Google

 /*
  *  GRUB  --  GRand Unified Bootloader
  *  Copyright (C) 1999,2000,2001,2003   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.
  */

 #ifndef _PC_SLICE_H
 #define _PC_SLICE_H

 /*
  *  These define the basic PC MBR sector characteristics
  */

 #define PC_MBR_SECTOR  0

 #define PC_MBR_SIG_OFFSET  510
 #define PC_MBR_SIGNATURE   0xaa55

 #define PC_SLICE_OFFSET 446
 #define PC_SLICE_MAX    4


 /*
  *  Defines to guarantee structural alignment.
  */

 #define PC_MBR_CHECK_SIG(mbr_ptr) \
   ( *( (unsigned short *) (((int) mbr_ptr) + PC_MBR_SIG_OFFSET) ) \
    == PC_MBR_SIGNATURE )

 #define PC_MBR_SIG(mbr_ptr) \
   ( *( (unsigned short *) (((int) mbr_ptr) + PC_MBR_SIG_OFFSET) ) )

 #define PC_SLICE_FLAG(mbr_ptr, part) \
   ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET \
 			  + (part << 4)) ) )

 #define PC_SLICE_HEAD(mbr_ptr, part) \
   ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 1 \
 			  + (part << 4)) ) )

 #define PC_SLICE_SEC(mbr_ptr, part) \
   ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 2 \
 			  + (part << 4)) ) )

 #define PC_SLICE_CYL(mbr_ptr, part) \
   ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 3 \
 			  + (part << 4)) ) )

 #define PC_SLICE_TYPE(mbr_ptr, part) \
   ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 4 \
 			  + (part << 4)) ) )

 #define PC_SLICE_EHEAD(mbr_ptr, part) \
   ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 5 \
 			  + (part << 4)) ) )

 #define PC_SLICE_ESEC(mbr_ptr, part) \
   ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 6 \
 			  + (part << 4)) ) )

 #define PC_SLICE_ECYL(mbr_ptr, part) \
   ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 7 \
 			  + (part << 4)) ) )

 #define PC_SLICE_START(mbr_ptr, part) \
   ( *( (unsigned long *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 8 \
 			  + (part << 4)) ) )

 #define PC_SLICE_LENGTH(mbr_ptr, part) \
   ( *( (unsigned long *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 12 \
 			  + (part << 4)) ) )


 /*
  *  PC flag types are defined here.
  */

 #define PC_SLICE_FLAG_NONE      0
 #define PC_SLICE_FLAG_BOOTABLE  0x80

 /*
  *  Known PC partition types are defined here.
  */

 /* This is not a flag actually, but used as if it were a flag.  */
 #define PC_SLICE_TYPE_HIDDEN_FLAG	0x10

 #define PC_SLICE_TYPE_NONE         	0
 #define PC_SLICE_TYPE_FAT12        	1
 #define PC_SLICE_TYPE_FAT16_LT32M  	4
 #define PC_SLICE_TYPE_EXTENDED     	5
 #define PC_SLICE_TYPE_FAT16_GT32M  	6
 #define PC_SLICE_TYPE_FAT32		0xb
 #define PC_SLICE_TYPE_FAT32_LBA		0xc
 #define PC_SLICE_TYPE_FAT16_LBA		0xe
 #define PC_SLICE_TYPE_WIN95_EXTENDED	0xf
 #define PC_SLICE_TYPE_EZD        	0x55
 #define PC_SLICE_TYPE_MINIX		0x80
 #define PC_SLICE_TYPE_LINUX_MINIX	0x81
 #define PC_SLICE_TYPE_EXT2FS       	0x83
 #define PC_SLICE_TYPE_LINUX_EXTENDED	0x85
 #define PC_SLICE_TYPE_VSTAFS		0x9e
 #define PC_SLICE_TYPE_DELL_UTIL		0xde
 #define PC_SLICE_TYPE_LINUX_RAID	0xfd


 /* For convinience.  */
 /* Check if TYPE is a FAT partition type. Clear the hidden flag before
    the check, to allow the user to mount a hidden partition in GRUB.  */
 #define IS_PC_SLICE_TYPE_FAT(type)	\
   ({ int _type = (type) & ~PC_SLICE_TYPE_HIDDEN_FLAG; \
      _type == PC_SLICE_TYPE_FAT12 \
      || _type == PC_SLICE_TYPE_FAT16_LT32M \
      || _type == PC_SLICE_TYPE_FAT16_GT32M \
      || _type == PC_SLICE_TYPE_FAT16_LBA \
      || _type == PC_SLICE_TYPE_FAT32 \
      || _type == PC_SLICE_TYPE_FAT32_LBA \
      || _type == PC_SLICE_TYPE_DELL_UTIL; })

 #define IS_PC_SLICE_TYPE_EXTENDED(type)	\
   (((type) == PC_SLICE_TYPE_EXTENDED)	\
    || ((type) == PC_SLICE_TYPE_WIN95_EXTENDED)	\
    || ((type) == PC_SLICE_TYPE_LINUX_EXTENDED))

 #define IS_PC_SLICE_TYPE_MINIX(type) \
   (((type) == PC_SLICE_TYPE_MINIX)	\
    || ((type) == PC_SLICE_TYPE_LINUX_MINIX))

 /* these ones are special, as they use their own partitioning scheme
    to subdivide the PC partitions from there.  */
 #define PC_SLICE_TYPE_FREEBSD		0xa5
 #define PC_SLICE_TYPE_OPENBSD		0xa6
 #define PC_SLICE_TYPE_NETBSD		0xa9

 /* For convenience.  */
 #define IS_PC_SLICE_TYPE_BSD_WITH_FS(type,fs)	\
   ((type) == (PC_SLICE_TYPE_FREEBSD | ((fs) << 8)) \
    || (type) == (PC_SLICE_TYPE_OPENBSD | ((fs) << 8)) \
    || (type) == (PC_SLICE_TYPE_NETBSD | (fs) << 8))

 #define IS_PC_SLICE_TYPE_BSD(type)	IS_PC_SLICE_TYPE_BSD_WITH_FS(type,0)

 /*
  *  *BSD-style disklabel & partition definitions.
  *
  *  This is a subdivided slice of type 'PC_SLICE_TYPE_BSD', so all of
  *  these, except where noted, are relative to the slice in question.
  */

 #define BSD_LABEL_SECTOR 1
 #define BSD_LABEL_MAGIC  0x82564557

 #define BSD_LABEL_MAG_OFFSET 0
 #define BSD_LABEL_MAG2_OFFSET 132
 #define BSD_LABEL_NPARTS_OFFSET 138
 #define BSD_LABEL_NPARTS_MAX 8

 #define BSD_PART_OFFSET 148


 /*
  *  Defines to guarantee structural alignment.
  */

 #define BSD_LABEL_CHECK_MAG(l_ptr) \
   ( *( (unsigned long *) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET) ) \
    == ( (unsigned long) BSD_LABEL_MAGIC ) )

 #define BSD_LABEL_MAG(l_ptr) \
   ( *( (unsigned long *) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET) ) )

 #define BSD_LABEL_DTYPE(l_ptr) \
   ( *( (unsigned short *) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET + 4) ) )

 #define BSD_LABEL_NPARTS(l_ptr) \
   ( *( (unsigned short *) (((int) l_ptr) + BSD_LABEL_NPARTS_OFFSET) ) )

 #define BSD_PART_LENGTH(l_ptr, part) \
   ( *( (unsigned long *) (((int) l_ptr) + BSD_PART_OFFSET \
 			  + (part << 4)) ) )

 #define BSD_PART_START(l_ptr, part) \
   ( *( (unsigned long *) (((int) l_ptr) + BSD_PART_OFFSET + 4 \
 			  + (part << 4)) ) )

 #define BSD_PART_FRAG_SIZE(l_ptr, part) \
   ( *( (unsigned long *) (((int) l_ptr) + BSD_PART_OFFSET + 8 \
 			  + (part << 4)) ) )

 #define BSD_PART_TYPE(l_ptr, part) \
   ( *( (unsigned char *) (((int) l_ptr) + BSD_PART_OFFSET + 12 \
 			  + (part << 4)) ) )

 #define BSD_PART_FRAGS_PER_BLOCK(l_ptr, part) \
   ( *( (unsigned char *) (((int) l_ptr) + BSD_PART_OFFSET + 13 \
 			  + (part << 4)) ) )

 #define BSD_PART_EXTRA(l_ptr, part) \
   ( *( (unsigned short *) (((int) l_ptr) + BSD_PART_OFFSET + 14 \
 			  + (part << 4)) ) )


 /* possible values for the "DISKTYPE"... all essentially irrelevant
    except for DTYPE_SCSI */
 #define DTYPE_SMD               1	/* SMD, XSMD; VAX hp/up */
 #define DTYPE_MSCP              2	/* MSCP */
 #define DTYPE_DEC               3	/* other DEC (rk, rl) */
 #define DTYPE_SCSI              4	/* SCSI */
 #define DTYPE_ESDI              5	/* ESDI interface */
 #define DTYPE_ST506             6	/* ST506 etc. */
 #define DTYPE_HPIB              7	/* CS/80 on HP-IB */
 #define DTYPE_HPFL              8	/* HP Fiber-link */
 #define DTYPE_FLOPPY            10	/* floppy */


 /* possible values for the *BSD-style partition type */
 #define	FS_UNUSED	0	/* unused */
 #define	FS_SWAP		1	/* swap */
 #define	FS_V6		2	/* Sixth Edition */
 #define	FS_V7		3	/* Seventh Edition */
 #define	FS_SYSV		4	/* System V */
 #define	FS_V71K		5	/* V7 with 1K blocks (4.1, 2.9) */
 #define	FS_V8		6	/* Eighth Edition, 4K blocks */
 #define	FS_BSDFFS	7	/* 4.2BSD fast file system */
 #define	FS_MSDOS	8	/* MSDOS file system */
 #define	FS_BSDLFS	9	/* 4.4BSD log-structured file system */
 #define	FS_OTHER	10	/* in use, but unknown/unsupported */
 #define	FS_HPFS		11	/* OS/2 high-performance file system */
 #define	FS_ISO9660	12	/* ISO 9660, normally CD-ROM */
 #define	FS_BOOT		13	/* partition contains bootstrap */
 #define	FS_ADOS		14	/* AmigaDOS fast file system */
 #define	FS_HFS		15	/* Macintosh HFS */
 #define	FS_FILECORE	16	/* Acorn Filecore Filing System */
 #define	FS_EXT2FS	17	/* Linux Extended 2 file system */


 #endif /* _PC_SLICE_H */
	/*
	* GRUB -- GRand Unified Bootloader
	* Copyright (C) 1999,2000,2001,2003 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.
	*/

	#ifndef _PC_SLICE_H
	#define _PC_SLICE_H

	/*
	* These define the basic PC MBR sector characteristics
	*/

	#define PC_MBR_SECTOR 0

	#define PC_MBR_SIG_OFFSET 510
	#define PC_MBR_SIGNATURE 0xaa55

	#define PC_SLICE_OFFSET 446
	#define PC_SLICE_MAX 4


	/*
	* Defines to guarantee structural alignment.
	*/

	#define PC_MBR_CHECK_SIG(mbr_ptr) \
	( ( (unsigned short ) (((int) mbr_ptr) + PC_MBR_SIG_OFFSET) ) \
	== PC_MBR_SIGNATURE )

	#define PC_MBR_SIG(mbr_ptr) \
	( ( (unsigned short ) (((int) mbr_ptr) + PC_MBR_SIG_OFFSET) ) )

	#define PC_SLICE_FLAG(mbr_ptr, part) \
	( ( (unsigned char ) (((int) mbr_ptr) + PC_SLICE_OFFSET \
	+ (part << 4)) ) )

	#define PC_SLICE_HEAD(mbr_ptr, part) \
	( ( (unsigned char ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 1 \
	+ (part << 4)) ) )

	#define PC_SLICE_SEC(mbr_ptr, part) \
	( ( (unsigned char ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 2 \
	+ (part << 4)) ) )

	#define PC_SLICE_CYL(mbr_ptr, part) \
	( ( (unsigned char ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 3 \
	+ (part << 4)) ) )

	#define PC_SLICE_TYPE(mbr_ptr, part) \
	( ( (unsigned char ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 4 \
	+ (part << 4)) ) )

	#define PC_SLICE_EHEAD(mbr_ptr, part) \
	( ( (unsigned char ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 5 \
	+ (part << 4)) ) )

	#define PC_SLICE_ESEC(mbr_ptr, part) \
	( ( (unsigned char ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 6 \
	+ (part << 4)) ) )

	#define PC_SLICE_ECYL(mbr_ptr, part) \
	( ( (unsigned char ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 7 \
	+ (part << 4)) ) )

	#define PC_SLICE_START(mbr_ptr, part) \
	( ( (unsigned long ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 8 \
	+ (part << 4)) ) )

	#define PC_SLICE_LENGTH(mbr_ptr, part) \
	( ( (unsigned long ) (((int) mbr_ptr) + PC_SLICE_OFFSET + 12 \
	+ (part << 4)) ) )


	/*
	* PC flag types are defined here.
	*/

	#define PC_SLICE_FLAG_NONE 0
	#define PC_SLICE_FLAG_BOOTABLE 0x80

	/*
	* Known PC partition types are defined here.
	*/

	/* This is not a flag actually, but used as if it were a flag. */
	#define PC_SLICE_TYPE_HIDDEN_FLAG 0x10

	#define PC_SLICE_TYPE_NONE 0
	#define PC_SLICE_TYPE_FAT12 1
	#define PC_SLICE_TYPE_FAT16_LT32M 4
	#define PC_SLICE_TYPE_EXTENDED 5
	#define PC_SLICE_TYPE_FAT16_GT32M 6
	#define PC_SLICE_TYPE_FAT32 0xb
	#define PC_SLICE_TYPE_FAT32_LBA 0xc
	#define PC_SLICE_TYPE_FAT16_LBA 0xe
	#define PC_SLICE_TYPE_WIN95_EXTENDED 0xf
	#define PC_SLICE_TYPE_EZD 0x55
	#define PC_SLICE_TYPE_MINIX 0x80
	#define PC_SLICE_TYPE_LINUX_MINIX 0x81
	#define PC_SLICE_TYPE_EXT2FS 0x83
	#define PC_SLICE_TYPE_LINUX_EXTENDED 0x85
	#define PC_SLICE_TYPE_VSTAFS 0x9e
	#define PC_SLICE_TYPE_DELL_UTIL 0xde
	#define PC_SLICE_TYPE_LINUX_RAID 0xfd


	/* For convinience. */
	/* Check if TYPE is a FAT partition type. Clear the hidden flag before
	the check, to allow the user to mount a hidden partition in GRUB. */
	#define IS_PC_SLICE_TYPE_FAT(type) \
	({ int _type = (type) & ~PC_SLICE_TYPE_HIDDEN_FLAG; \
	_type == PC_SLICE_TYPE_FAT12 \
	\|\| _type == PC_SLICE_TYPE_FAT16_LT32M \
	\|\| _type == PC_SLICE_TYPE_FAT16_GT32M \
	\|\| _type == PC_SLICE_TYPE_FAT16_LBA \
	\|\| _type == PC_SLICE_TYPE_FAT32 \
	\|\| _type == PC_SLICE_TYPE_FAT32_LBA \
	\|\| _type == PC_SLICE_TYPE_DELL_UTIL; })

	#define IS_PC_SLICE_TYPE_EXTENDED(type) \
	(((type) == PC_SLICE_TYPE_EXTENDED) \
	\|\| ((type) == PC_SLICE_TYPE_WIN95_EXTENDED) \
	\|\| ((type) == PC_SLICE_TYPE_LINUX_EXTENDED))

	#define IS_PC_SLICE_TYPE_MINIX(type) \
	(((type) == PC_SLICE_TYPE_MINIX) \
	\|\| ((type) == PC_SLICE_TYPE_LINUX_MINIX))

	/* these ones are special, as they use their own partitioning scheme
	to subdivide the PC partitions from there. */
	#define PC_SLICE_TYPE_FREEBSD 0xa5
	#define PC_SLICE_TYPE_OPENBSD 0xa6
	#define PC_SLICE_TYPE_NETBSD 0xa9

	/* For convenience. */
	#define IS_PC_SLICE_TYPE_BSD_WITH_FS(type,fs) \
	((type) == (PC_SLICE_TYPE_FREEBSD \| ((fs) << 8)) \
	\|\| (type) == (PC_SLICE_TYPE_OPENBSD \| ((fs) << 8)) \
	\|\| (type) == (PC_SLICE_TYPE_NETBSD \| (fs) << 8))

	#define IS_PC_SLICE_TYPE_BSD(type) IS_PC_SLICE_TYPE_BSD_WITH_FS(type,0)

	/*
	* *BSD-style disklabel & partition definitions.
	*
	* This is a subdivided slice of type 'PC_SLICE_TYPE_BSD', so all of
	* these, except where noted, are relative to the slice in question.
	*/

	#define BSD_LABEL_SECTOR 1
	#define BSD_LABEL_MAGIC 0x82564557

	#define BSD_LABEL_MAG_OFFSET 0
	#define BSD_LABEL_MAG2_OFFSET 132
	#define BSD_LABEL_NPARTS_OFFSET 138
	#define BSD_LABEL_NPARTS_MAX 8

	#define BSD_PART_OFFSET 148


	/*
	* Defines to guarantee structural alignment.
	*/

	#define BSD_LABEL_CHECK_MAG(l_ptr) \
	( ( (unsigned long ) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET) ) \
	== ( (unsigned long) BSD_LABEL_MAGIC ) )

	#define BSD_LABEL_MAG(l_ptr) \
	( ( (unsigned long ) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET) ) )

	#define BSD_LABEL_DTYPE(l_ptr) \
	( ( (unsigned short ) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET + 4) ) )

	#define BSD_LABEL_NPARTS(l_ptr) \
	( ( (unsigned short ) (((int) l_ptr) + BSD_LABEL_NPARTS_OFFSET) ) )

	#define BSD_PART_LENGTH(l_ptr, part) \
	( ( (unsigned long ) (((int) l_ptr) + BSD_PART_OFFSET \
	+ (part << 4)) ) )

	#define BSD_PART_START(l_ptr, part) \
	( ( (unsigned long ) (((int) l_ptr) + BSD_PART_OFFSET + 4 \
	+ (part << 4)) ) )

	#define BSD_PART_FRAG_SIZE(l_ptr, part) \
	( ( (unsigned long ) (((int) l_ptr) + BSD_PART_OFFSET + 8 \
	+ (part << 4)) ) )

	#define BSD_PART_TYPE(l_ptr, part) \
	( ( (unsigned char ) (((int) l_ptr) + BSD_PART_OFFSET + 12 \
	+ (part << 4)) ) )

	#define BSD_PART_FRAGS_PER_BLOCK(l_ptr, part) \
	( ( (unsigned char ) (((int) l_ptr) + BSD_PART_OFFSET + 13 \
	+ (part << 4)) ) )

	#define BSD_PART_EXTRA(l_ptr, part) \
	( ( (unsigned short ) (((int) l_ptr) + BSD_PART_OFFSET + 14 \
	+ (part << 4)) ) )


	/* possible values for the "DISKTYPE"... all essentially irrelevant
	except for DTYPE_SCSI */
	#define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
	#define DTYPE_MSCP 2 /* MSCP */
	#define DTYPE_DEC 3 /* other DEC (rk, rl) */
	#define DTYPE_SCSI 4 /* SCSI */
	#define DTYPE_ESDI 5 /* ESDI interface */
	#define DTYPE_ST506 6 /* ST506 etc. */
	#define DTYPE_HPIB 7 /* CS/80 on HP-IB */
	#define DTYPE_HPFL 8 /* HP Fiber-link */
	#define DTYPE_FLOPPY 10 /* floppy */


	/* possible values for the BSD-style partition type /
	#define FS_UNUSED 0 /* unused */
	#define FS_SWAP 1 /* swap */
	#define FS_V6 2 /* Sixth Edition */
	#define FS_V7 3 /* Seventh Edition */
	#define FS_SYSV 4 /* System V */
	#define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
	#define FS_V8 6 /* Eighth Edition, 4K blocks */
	#define FS_BSDFFS 7 /* 4.2BSD fast file system */
	#define FS_MSDOS 8 /* MSDOS file system */
	#define FS_BSDLFS 9 /* 4.4BSD log-structured file system */
	#define FS_OTHER 10 /* in use, but unknown/unsupported */
	#define FS_HPFS 11 /* OS/2 high-performance file system */
	#define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
	#define FS_BOOT 13 /* partition contains bootstrap */
	#define FS_ADOS 14 /* AmigaDOS fast file system */
	#define FS_HFS 15 /* Macintosh HFS */
	#define FS_FILECORE 16 /* Acorn Filecore Filing System */
	#define FS_EXT2FS 17 /* Linux Extended 2 file system */


	#endif /* _PC_SLICE_H */