1 files changed, 154 insertions, 0 deletions

diff --git a/firmware/drivers/fat.h b/firmware/drivers/fat.h
new file mode 100644
index 0000000000..f1dc8dc5a0
--- /dev/null
+++ b/firmware/drivers/fat.h
@@ -0,0 +1,154 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef FAT_H
+#define FAT_H
+
+#define FATTYPE_FAT12       0
+#define FATTYPE_FAT16       1
+#define FATTYPE_FAT32       2
+
+#define BS_JMPBOOT          0
+#define BS_OEMNAME          3
+#define BPB_BYTSPERSEC      11
+#define BPB_SECPERCLUS      13
+#define BPB_RSVDSECCNT      14
+#define BPB_NUMFATS         16
+#define BPB_ROOTENTCNT      17
+#define BPB_TOTSEC16        19
+#define BPB_MEDIA           21
+#define BPB_FATSZ16         22
+#define BPB_SECPERTRK       24
+#define BPB_NUMHEADS        26
+#define BPB_HIDDSEC         28
+#define BPB_TOTSEC32        32
+
+#define BS_DRVNUM           36
+#define BS_RESERVED1        37
+#define BS_BOOTSIG          38
+#define BS_VOLID            39
+#define BS_VOLLAB           43
+#define BS_FILSYSTYPE       54
+
+#define BPB_FATSZ32          36
+
+#define BPB_LAST_WORD       510
+
+#define MIN(a,b) (((a) < (b))?(a):(b)))
+
+struct bpb
+{
+        char bs_oemname[9];  /* OEM string, ending with \0 */
+        int bpb_bytspersec;  /* Bytes per sectory, typically 512 */
+        int bpb_secperclus;  /* Sectors per cluster */
+        int bpb_rsvdseccnt;  /* Number of reserved sectors */
+        int bpb_numfats;     /* Number of FAT structures, typically 2 */
+        int bpb_rootentcnt;  /* Number of dir entries in the root */
+        int bpb_totsec16;    /* Number of sectors on the volume (old 16-bit) */
+        int bpb_media;       /* Media type (typically 0xf0 or 0xf8) */
+        int bpb_fatsz16;     /* Number of used sectors per FAT structure */
+        int bpb_secpertrk;   /* Number of sectors per track */
+        int bpb_numheads;    /* Number of heads */
+        int bpb_hiddsec;     /* Hidden sectors before the volume */
+        unsigned int bpb_totsec32;    /* Number of sectors on the volume
+                                         (new 32-bit) */
+        /**** FAT12/16 specific *****/
+        int bs_drvnum;       /* Drive number */
+        int bs_bootsig;      /* Is 0x29 if the following 3 fields are valid */
+        unsigned int bs_volid; /* Volume ID */
+        char bs_vollab[12];  /* Volume label, 11 chars plus \0 */
+        char bs_filsystype[9]; /* File system type, 8 chars plus \0 */
+
+        /**** FAT32 specific *****/
+        int bpb_fatsz32;
+        
+        int last_word;       /* Must be 0xaa55 */
+
+        int fat_type;        /* What type of FAT is this? */
+};
+
+#define FAT_ATTR_READ_ONLY   0x01
+#define FAT_ATTR_HIDDEN      0x02
+#define FAT_ATTR_SYSTEM      0x04
+#define FAT_ATTR_VOLUME_ID   0x08
+#define FAT_ATTR_DIRECTORY   0x10
+#define FAT_ATTR_ARCHIVE     0x20
+#define FAT_ATTR_LONG_NAME   (FAT_ATTR_READ_ONLY | FAT_ATTR_HIDDEN | \
+                              FAT_ATTR_SYSTEM | FAT_ATTR_VOLUME_ID)
+
+
+#define FATDIR_NAME          0
+#define FATDIR_ATTR          11
+#define FATDIR_NTRES         12
+#define FATDIR_CRTTIMETENTH  13
+#define FATDIR_CRTTIME       14
+#define FATDIR_CRTDATE       16
+#define FATDIR_LSTACCDATE    18
+#define FATDIR_FSTCLUSHI     20
+#define FATDIR_WRTTIME       22
+#define FATDIR_WRTDATE       24
+#define FATDIR_FSTCLUSLO     26
+#define FATDIR_FILESIZE      28
+
+struct fat_direntry
+{
+        unsigned char name[12];         /* Name plus \0 */
+        unsigned short attr;            /* Attributes */
+        unsigned char crttimetenth;     /* Millisecond creation
+                                           time stamp (0-199) */
+        unsigned short crttime;         /* Creation time */
+        unsigned short crtdate;         /* Creation date */
+        unsigned short lstaccdate;      /* Last access date */
+        unsigned short fstclushi;       /* High word of first cluster
+                                           (0 for FAT12/16) */
+        unsigned short wrttime;         /* Last write time */
+        unsigned short wrtdate;         /* Last write date */
+        unsigned short fstcluslo;       /* Low word of first cluster */
+        unsigned int filesize;          /* File size in bytes */
+};
+
+struct fat_context
+{
+        unsigned int curr_dir_sec; /* Current directory sector */
+        
+};
+
+struct disk_info
+{
+        int num_sectors;
+        int sec_per_track;
+        int num_heads;
+        unsigned int hidden_sectors;
+};
+
+struct fat_dirent
+{
+        int entry;
+        unsigned int cached_sec;
+        unsigned int num_sec;
+        char cached_buf[BLOCK_SIZE];
+};
+
+int fat_format(struct disk_info *di, char *vol_name);
+int fat_create_file(struct bpb *bpb, unsigned int currdir, char *name);
+int fat_opendir(struct bpb *bpb, struct fat_dirent *ent, unsigned int currdir);
+int fat_getnext(struct bpb *bpb, struct fat_dirent *ent,
+                struct fat_direntry *entry);
+
+#endif