|
|
/*------------------------------------------------------------------------------
|
|
|
-- 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 <libucfs.h>
|
|
|
#include <ucdirent.h>
|
|
|
#include <stdint.h>
|
|
|
#include <stdint-gcc.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
|
|
|
|
|
|
/*
|
|
|
TODO :
|
|
|
intergrate a per BLKDEV or per partition buffer.
|
|
|
*/
|
|
|
typedef struct FAT32fs
|
|
|
{
|
|
|
uint16_t BPB_BytsPerSec;
|
|
|
uint16_t BPB_RsvdSecCnt;
|
|
|
uint32_t BPB_FATSz32;
|
|
|
uint32_t BPB_RootClus;
|
|
|
uint32_t fat_begin_lba;
|
|
|
uint32_t cluster_begin_lba;
|
|
|
uint8_t BPB_SecPerClus;
|
|
|
uint8_t BPB_NumFATs;
|
|
|
char valide;
|
|
|
dikpartition* part;
|
|
|
}FAT32fs;
|
|
|
|
|
|
|
|
|
#define castUI64(val) ((uint64_t)(val))
|
|
|
#define castUI32(val) ((uint32_t)(val))
|
|
|
#define castUI16(val) ((uint16_t)(val))
|
|
|
#define castUI8(val) ((uint8_t)(val))
|
|
|
|
|
|
#define castI64(val) ((int64_t)(val))
|
|
|
#define castI32(val) ((int32_t)(val))
|
|
|
#define castI16(val) ((int16_t)(val))
|
|
|
#define castI8(val) ((int8_t)(val))
|
|
|
|
|
|
/*
|
|
|
TODO :
|
|
|
Should add global function for casting with endianness care.
|
|
|
have a look at REV, REV16, REVSH, and RBIT ARMV7m asm
|
|
|
*/
|
|
|
|
|
|
#if __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
|
|
|
#define fat32Ui8_2_Ui32(table,lsBindex) ((uint32_t)((0xFF&(table[lsBindex]))+(0xFF00&(((uint32_t)table[lsBindex+1])<<8))+(0xFF0000&(((uint32_t)table[lsBindex+2])<<16))+(0xFF000000&(((uint32_t)table[lsBindex+3])<<24))))
|
|
|
#define fat32Ui8_2_Ui16(table,lsBindex) ((uint16_t)((0xFF&(table[lsBindex]))+(0xFF00&(((uint16_t)table[lsBindex+1])<<8))))
|
|
|
#define fat32extract16b(table, LSBOffset) (uint16_t)(( (uint16_t) ((uint8_t)table[(LSBOffset)]) ) + (uint16_t)( ((uint8_t)table[(LSBOffset)+1]) << 8 ))
|
|
|
#define fat32extract32b(table, LSBOffset) (uint32_t)(( (uint32_t) ((uint8_t)table[(LSBOffset)]) ) + (uint32_t)( ((uint8_t)table[(LSBOffset)+1]) << 8 )+ (uint32_t)( ((uint8_t)table[(LSBOffset)+2]) << 16 )+ (uint32_t)( ((uint8_t)table[(LSBOffset)+3]) << 24 ))
|
|
|
#else
|
|
|
#define fat32Ui8_2_Ui32(table,lsBindex) ((uint32_t)((0xFF&(table[lsBindex]))+(0xFF00&(((uint32_t)table[lsBindex+1])<<8))+(0xFF0000&(((uint32_t)table[lsBindex+2])<<16))+(0xFF000000&(((uint32_t)table[lsBindex+3])<<24))))
|
|
|
#define fat32Ui8_2_Ui16(table,lsBindex) ((uint16_t)((0xFF&(table[lsBindex]))+(0xFF00&(((uint16_t)table[lsBindex+1])<<8))))
|
|
|
#define fat32extract16b(table, LSBOffset) (uint16_t)(( (uint16_t) ((uint8_t)table[(LSBOffset)]) ) + (uint16_t)( ((uint8_t)table[(LSBOffset)+1]) << 8 ))
|
|
|
#define fat32extract32b(table, LSBOffset) (uint32_t)(( (uint32_t) ((uint8_t)table[(LSBOffset)]) ) + (uint32_t)( ((uint8_t)table[(LSBOffset)+1]) << 8 )+ (uint32_t)( ((uint8_t)table[(LSBOffset)+2]) << 16 )+ (uint32_t)( ((uint8_t)table[(LSBOffset)+3]) << 24 ))
|
|
|
#endif
|
|
|
|
|
|
|
|
|
/* Get the first sector lba of given cluster number*/
|
|
|
#define clusterlba(fs,cluster_number) ((uint32_t)fs->cluster_begin_lba + (((uint32_t)cluster_number) - (2)) * (uint32_t)fs->BPB_SecPerClus)
|
|
|
|
|
|
//#define fat32clusterinfatsect(fs,cluster_number) ((((uint32_t)(cluster_number))>>6) + fs->fat_begin_lba)
|
|
|
#define fat32clusterinfatsect(fs,cluster_number) ((((uint32_t)(cluster_number))>>7) + fs->fat_begin_lba)
|
|
|
#define fat32clusterinfatoff(cluster_number) (((cluster_number)&0x7F)*4)
|
|
|
|
|
|
/*Get cluster index in FAT Table from sector address*/
|
|
|
#define fat32masksectorlba(sectorlba,fs) (sectorlba)//(sectorlba & (castUI32(-1)^castUI32(fs->BPB_SecPerClus-1)))
|
|
|
#define fat32sectorlbatoclusternum(fs,sectorlba) (((fat32masksectorlba(castUI32(sectorlba),fs) -(castUI32(fs->cluster_begin_lba)))/castUI32(fs->BPB_SecPerClus))+castUI32(2))
|
|
|
|
|
|
|
|
|
#ifdef FAT32_PRIVATE
|
|
|
#define fat32sectorreadout(fs,fatsec) \
|
|
|
if((lastSecAddrs!=(fatsec)) || (lastFATFS!=(fs))) /*Check if sector already buffered*/ \
|
|
|
{\
|
|
|
if((fs)->part->phy->read((fs)->part->phy,fat32buff,(fatsec),1)!=RES_OK) \
|
|
|
{\
|
|
|
return DIRENT_ReadErr;\
|
|
|
}\
|
|
|
}\
|
|
|
lastSecAddrs=(fatsec);\
|
|
|
lastFATFS=(fs);
|
|
|
#endif
|
|
|
|
|
|
extern int fat32open(FAT32fs* fs,dikpartition* part);
|
|
|
extern int fat32mkdirent(FAT32fs* fs,ucdirent* dirent);
|
|
|
extern int fat32getVolName(FAT32fs* fs,char* Name);
|
|
|
extern int fat32getrootfirstent(ucdirent* entry);
|
|
|
extern int fat32nextdirent(ucdirent* entry);
|
|
|
extern int fat32nextsectorlba(FAT32fs* fs,uint32_t lastsector_lba,uint32_t* nextsector_lba);
|
|
|
extern int fat32prevsectorlba(FAT32fs* fs,uint32_t lastsector_lba,uint32_t *nextsector_lba);
|
|
|
extern int fat32prevsectorlba2(FAT32fs* fs,ucdirent* entry,uint32_t lastsector_lba,uint32_t *nextsector_lba);
|
|
|
extern uint32_t fat32getdirentlba(ucdirent* entry);
|
|
|
extern int fat32getdirentname(ucdirent* entry,char* nameBuffer);
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
