Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / openbios / fs / grubfs / fat.h

diff --git a/qemu/roms/openbios/fs/grubfs/fat.h b/qemu/roms/openbios/fs/grubfs/fat.h
new file mode 100644 (file)
index 0000000..43d38ae
--- /dev/null
+++ b/qemu/roms/openbios/fs/grubfs/fat.h
@@ -0,0 +1,99 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2001  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.
+ */
+
+
+/*
+ *  Defines for the FAT BIOS Parameter Block (embedded in the first block
+ *  of the partition.
+ */
+
+typedef __signed__ char __s8;
+typedef unsigned char __u8;
+typedef __signed__ short __s16;
+typedef unsigned short __u16;
+typedef __signed__ int __s32;
+typedef unsigned int __u32;
+
+/* Note that some shorts are not aligned, and must therefore
+ * be declared as array of two bytes.
+ */
+struct fat_bpb {
+       __s8    ignored[3];     /* Boot strap short or near jump */
+       __s8    system_id[8];   /* Name - can be used to special case
+                                  partition manager volumes */
+       __u16   bytes_per_sect; /* bytes per logical sector */
+       __u8    sects_per_clust;/* sectors/cluster */
+       __u16   reserved_sects; /* reserved sectors */
+       __u8    num_fats;       /* number of FATs */
+       __u16   dir_entries;    /* root directory entries */
+       __u16   short_sectors;  /* number of sectors */
+       __u8    media;          /* media code (unused) */
+       __u16   fat_length;     /* sectors/FAT */
+       __u16   secs_track;     /* sectors per track */
+       __u16   heads;          /* number of heads */
+       __u32   hidden;         /* hidden sectors (unused) */
+       __u32   long_sectors;   /* number of sectors (if short_sectors == 0) */
+
+       /* The following fields are only used by FAT32 */
+       __u32   fat32_length;   /* sectors/FAT */
+       __u16   flags;          /* bit 8: fat mirroring, low 4: active fat */
+       __u16   version;        /* major, minor filesystem version */
+       __u32   root_cluster;   /* first cluster in root directory */
+       __u16   info_sector;    /* filesystem info sector */
+       __u16   backup_boot;    /* backup boot sector */
+       __u16   reserved2[6];   /* Unused */
+} __attribute__ ((packed));
+
+/*
+ *  Defines how to differentiate a 12-bit and 16-bit FAT.
+ */
+
+#define FAT_MAX_12BIT_CLUST       4087 /* 4085 + 2 */
+
+/*
+ *  Defines for the file "attribute" byte
+ */
+
+#define FAT_ATTRIB_OK_MASK        0x37
+#define FAT_ATTRIB_NOT_OK_MASK    0xC8
+#define FAT_ATTRIB_DIR            0x10
+#define FAT_ATTRIB_LONGNAME       0x0F
+
+/*
+ *  Defines for FAT directory entries
+ */
+
+#define FAT_DIRENTRY_LENGTH       32
+
+#define FAT_DIRENTRY_ATTRIB(entry) \
+  (*((unsigned char *) (entry+11)))
+#define FAT_DIRENTRY_VALID(entry) \
+  ( ((*((unsigned char *) entry)) != 0) \
+    && ((*((unsigned char *) entry)) != 0xE5) \
+    && !(FAT_DIRENTRY_ATTRIB(entry) & FAT_ATTRIB_NOT_OK_MASK) )
+#define FAT_DIRENTRY_FIRST_CLUSTER(entry) \
+  ((*((unsigned short *) (entry+26)))+(*((unsigned short *) (entry+20)) << 16))
+#define FAT_DIRENTRY_FILELENGTH(entry) \
+  (*((unsigned long *) (entry+28)))
+
+#define FAT_LONGDIR_ID(entry) \
+  (*((unsigned char *) (entry)))
+#define FAT_LONGDIR_ALIASCHECKSUM(entry) \
+  (*((unsigned char *) (entry+13)))