|
|
/*------------------------------------------------------------------------------
|
|
|
-- This file is a part of the libuc, microcontroler library
|
|
|
-- Copyright (C) 2012, Alexis Jeandet
|
|
|
--
|
|
|
-- 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 3 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-------------------------------------------------------------------------------
|
|
|
-- Author : Alexis Jeandet
|
|
|
-- Mail : alexis.jeandet@gmail.com
|
|
|
-------------------------------------------------------------------------------*/
|
|
|
#ifndef FAT32_H
|
|
|
#define FAT32_H
|
|
|
#include <mbr.h>
|
|
|
#include <fs.h>
|
|
|
#include <ucdirent.h>
|
|
|
/*BPB (Boot Sector) Offsets */
|
|
|
|
|
|
#define BS_jmpBootoff 0
|
|
|
#define BS_OEMNameoff 3
|
|
|
#define BPB_BytsPerSecoff 11
|
|
|
#define BPB_SecPerClusoff 13
|
|
|
#define BPB_RsvdSecCntoff 14
|
|
|
#define BPB_NumFATsoff 16
|
|
|
#define BPB_RootEntCntoff 17
|
|
|
#define BPB_TotSec16off 19
|
|
|
#define BPB_Mediaoff 21
|
|
|
#define BPB_FATSz16off 22
|
|
|
#define BPB_SecPerTrkoff 24
|
|
|
#define BPB_NumHeadsoff 26
|
|
|
#define BPB_HiddSecoff 28
|
|
|
#define BPB_TotSec32off 32
|
|
|
/*FAT16*/
|
|
|
#define BS_DrvNumFAT16off 36
|
|
|
#define BS_Reserved1FAT16off 37
|
|
|
#define BS_BootSigFAT16off 38
|
|
|
#define BS_VolIDFAT16off 39
|
|
|
#define BS_VolLabFAT16off 43
|
|
|
#define BS_FilSysTypeFAT16off 54
|
|
|
/*FAT32*/
|
|
|
#define BPB_FATSz32off 36
|
|
|
#define BPB_ExtFlagsoff 40
|
|
|
#define BPB_FSVeroff 42
|
|
|
#define BPB_RootClusoff 44
|
|
|
#define BPB_FSInfooff 48
|
|
|
#define BPB_BkBootSecoff 50
|
|
|
#define BPB_Reservedoff 52
|
|
|
#define BS_DrvNumFAT32off 64
|
|
|
#define BS_Reserved1FAT32off 65
|
|
|
#define BS_BootSigFAT32off 66
|
|
|
#define BS_VolIDFAT32off 67
|
|
|
#define BS_VolLabFAT32off 71
|
|
|
#define BS_FilSysTypeFAT32off 82
|
|
|
|
|
|
|
|
|
#define DIR_Nameoff 0
|
|
|
#define DIR_Attroff 0xb
|
|
|
#define DIR_FstClusHIoff 0x14
|
|
|
#define DIR_FstClusLOoff 0x1A
|
|
|
#define DIR_FileSizeoff 0x1c
|
|
|
#define DIR_CrtTimeTenthoff 13
|
|
|
#define DIR_CrtTimeoff 14
|
|
|
#define DIR_CrtDateoff 16
|
|
|
#define DIR_LstAccDateoff 18
|
|
|
#define DIR_WrtTimeoff 22
|
|
|
#define DIR_WrtDateoff 24
|
|
|
|
|
|
|
|
|
|
|
|
#define FATBadpart 1
|
|
|
#define FATBabArg 2
|
|
|
#define FATReadErr 3
|
|
|
#define FATnoErr 0
|
|
|
|
|
|
struct FAT32part_str
|
|
|
{
|
|
|
unsigned short BPB_BytsPerSec;
|
|
|
unsigned short BPB_RsvdSecCnt;
|
|
|
unsigned int BPB_FATSz32;
|
|
|
unsigned int BPB_RootClus;
|
|
|
unsigned int fat_begin_lba;
|
|
|
unsigned int cluster_begin_lba;
|
|
|
unsigned char BPB_SecPerClus;
|
|
|
unsigned char BPB_NumFATs;
|
|
|
dikpartition* part;
|
|
|
};
|
|
|
|
|
|
typedef volatile struct FAT32part_str FAT32fs;
|
|
|
|
|
|
#define clusterlba(fs,cluster_number) ((unsigned int)fs->cluster_begin_lba + (((unsigned int)cluster_number) - (2)) * (unsigned int)fs->BPB_SecPerClus)
|
|
|
#define fat32clusterinfatsect(fs,cluster_number) ((((unsigned int)(cluster_number))>>6) + fs->fat_begin_lba)
|
|
|
#define fat32clusterinfatoff(cluster_number) (((cluster_number)&0x3F)*4)
|
|
|
#define fat32sectorlbatoclusternum(fs,sectorlba) ((((((unsigned int)sectorlba & (-1^(fs->BPB_SecPerClus-1))))-((unsigned int)fs->cluster_begin_lba))/(unsigned int)fs->BPB_SecPerClus)+(2))
|
|
|
|
|
|
extern int fat32open(FAT32fs* fs,dikpartition* part);
|
|
|
extern int fat32mkdirent(FAT32fs* fs,ucdirent* dirent);
|
|
|
|
|
|
extern int fat32getrootfirstent(ucdirent* entry);
|
|
|
extern int fat32nextdirent(ucdirent* entry);
|
|
|
extern int fat32nextsectorlba(FAT32fs* fs,unsigned int lastsector_lba,unsigned int* nextsector_lba);
|
|
|
extern unsigned int fat32getdirentlba(ucdirent* entry);
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|