diff options
Diffstat (limited to 'qemu/roms/openbios/fs/grubfs/filesys.h')
| -rw-r--r-- | qemu/roms/openbios/fs/grubfs/filesys.h | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/qemu/roms/openbios/fs/grubfs/filesys.h b/qemu/roms/openbios/fs/grubfs/filesys.h new file mode 100644 index 000000000..6b6f97603 --- /dev/null +++ b/qemu/roms/openbios/fs/grubfs/filesys.h @@ -0,0 +1,303 @@ +/* GRUB compatibility header + * + * taken from filo and grub. + */ + +/* + * 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., 51 Franklin Street - Fifth Floor, Boston, + * MA 02110-1301, USA. + */ + +/* This disables some portion of code */ +#define STAGE1_5 1 + +#if defined CONFIG_X86 +/* + * ffz = Find First Zero in word. Undefined if no zero exists, + * so code should check against ~0UL first.. + */ +static __inline__ unsigned int +ffz (unsigned int word) +{ + __asm__ ("bsfl %1,%0" + : "=r" (word) + : "r" (~word)); + return word; +} + +static __inline__ unsigned int +log2 (unsigned int word) +{ + __asm__ ("bsfl %1,%0" + : "=r" (word) + : "r" (word)); + return word; +} + +#elif defined (CONFIG_PPC) +static __inline__ unsigned long + __ilog2(unsigned long x) +{ + unsigned long lz; + + asm ("cntlzw %0,%1" : "=r" (lz) : "r" (x)); + return 31 - lz; +} + +static __inline__ unsigned long +ffz(unsigned long x) +{ + if ((x = ~x) == 0) + return 32; + + return __ilog2(x & -x); +} + +#define log2(n) ffz(~(n)) + +#else + +static __inline__ unsigned int log2(unsigned int word) +{ + /* assume 8 bits per byte. */ + unsigned int i = 1 << (sizeof(word)*8 - 1); + unsigned int pow = sizeof(word) * 8 - 1; + + if (! word) { + /* invalid parameter */ + return -1; + } + for(; i > word; i >>= 1, pow--) ; + + return pow; +} + +#define ffz(n) log2(~(n)) + +#endif + +static inline int +substring (const char *s1, const char *s2) +{ + while (*s1 == *s2) + { + /* The strings match exactly. */ + if (! *(s1++)) + return 0; + s2 ++; + } + + /* S1 is a substring of S2. */ + if (*s1 == 0) + return -1; + + /* S1 isn't a substring. */ + return 1; +} + +#define grub_memmove memmove +#define grub_strcmp strcmp + +#define MAXINT 0x7fffffff + +/* This is only used by fsys_* to determine if it's hard disk. If it is, + * they try to guess filesystem type by partition type. I guess it is + * not necessory, so hardcoded to 0 (first floppy) --ts1 */ +#define current_drive 0 +#define current_slice 0 +#define current_partition 0 + +/* we fake this for now, assuming that the filesystem is not corrupt */ +#define part_length -1 +extern int filepos; +extern int filemax; +extern int fsmax; + +/* 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 grub_error_t errnum; + +#define grub_open file_open +#define grub_read file_read +#define grub_seek file_seek +#define grub_close file_close + +/* instrumentation variables */ +/* (Not used in FILO) */ +extern void (*disk_read_hook) (int, int, int); +extern void (*disk_read_func) (int, int, int); + +#define FSYS_BUFLEN 0x8000 +extern char FSYS_BUF[FSYS_BUFLEN]; + +#define print_possibilities 0 + +#define SECTOR_SIZE 512 +#define SECTOR_BITS 9 + +#ifdef CONFIG_FSYS_FAT +int fat_mount (void); +int fat_read (char *buf, int len); +int fat_dir (char *dirname); +#endif + +#ifdef CONFIG_FSYS_EXT2FS +int ext2fs_mount (void); +int ext2fs_read (char *buf, int len); +int ext2fs_dir (char *dirname); +#endif + +#ifdef CONFIG_FSYS_MINIX +int minix_mount (void); +int minix_read (char *buf, int len); +int minix_dir (char *dirname); +#endif + +#ifdef CONFIG_FSYS_REISERFS +int reiserfs_mount (void); +int reiserfs_read (char *buf, int len); +int reiserfs_dir (char *dirname); +int reiserfs_embed (int *start_sector, int needed_sectors); +#endif + +#ifdef CONFIG_FSYS_JFS +int jfs_mount (void); +int jfs_read (char *buf, int len); +int jfs_dir (char *dirname); +int jfs_embed (int *start_sector, int needed_sectors); +#endif + +#ifdef CONFIG_FSYS_XFS +int xfs_mount (void); +int xfs_read (char *buf, int len); +int xfs_dir (char *dirname); +#endif + +#ifdef CONFIG_FSYS_UFS +int ufs_mount (void); +int ufs_read (char *buf, int len); +int ufs_dir (char *dirname); +int ufs_embed (int *start_sector, int needed_sectors); +#endif + +#ifdef CONFIG_FSYS_ISO9660 +int iso9660_mount (void); +int iso9660_read (char *buf, int len); +int iso9660_dir (char *dirname); +#endif + +/* 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_MINIX(type) \ + (((type) == PC_SLICE_TYPE_MINIX) \ + || ((type) == PC_SLICE_TYPE_LINUX_MINIX)) + +#define IS_PC_SLICE_TYPE_BSD_WITH_FS(type,fs) 0 + +/* 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 */ |