--- /dev/null
+/* 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 */
Code Review / kvmfornfv.git / blobdiff