X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=include%2Ffat.h;h=2c951e7d79c626bdff3749eabd2cce5283089050;hp=92638d535e4def9e99a694d6842a04840f4423b7;hb=ab62e387cafb5e99819e24715dbc6496f5516e5a;hpb=c5185470fef2d4d94e78f57e92f3d88b7d11857c diff --git a/include/fat.h b/include/fat.h index 92638d535e..2c951e7d79 100644 --- a/include/fat.h +++ b/include/fat.h @@ -4,24 +4,7 @@ * 2002-07-28 - rjones@nexus-tech.net - ported to ppcboot v1.1.6 * 2003-03-10 - kharris@nexus-tech.net - ported to u-boot * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - * + * SPDX-License-Identifier: GPL-2.0+ */ #ifndef _FAT_H_ @@ -30,21 +13,18 @@ #include #define CONFIG_SUPPORT_VFAT - -#define SECTOR_SIZE FS_BLOCK_SIZE - -#define FS_BLOCK_SIZE 512 - -#if FS_BLOCK_SIZE != SECTOR_SIZE -#error FS_BLOCK_SIZE != SECTOR_SIZE - This code needs to be fixed! -#endif +/* Maximum Long File Name length supported here is 128 UTF-16 code units */ +#define VFAT_MAXLEN_BYTES 256 /* Maximum LFN buffer in bytes */ +#define VFAT_MAXSEQ 9 /* Up to 9 of 13 2-byte UTF-16 entries */ +#define PREFETCH_BLOCKS 2 #define MAX_CLUSTSIZE 65536 -#define DIRENTSPERBLOCK (FS_BLOCK_SIZE/sizeof(dir_entry)) -#define DIRENTSPERCLUST ((mydata->clust_size*SECTOR_SIZE)/sizeof(dir_entry)) +#define DIRENTSPERBLOCK (mydata->sect_size / sizeof(dir_entry)) +#define DIRENTSPERCLUST ((mydata->clust_size * mydata->sect_size) / \ + sizeof(dir_entry)) #define FATBUFBLOCKS 6 -#define FATBUFSIZE (FS_BLOCK_SIZE*FATBUFBLOCKS) +#define FATBUFSIZE (mydata->sect_size * FATBUFBLOCKS) #define FAT12BUFSIZE ((FATBUFSIZE*2)/3) #define FAT16BUFSIZE (FATBUFSIZE/2) #define FAT32BUFSIZE (FATBUFSIZE/4) @@ -57,37 +37,31 @@ #define SIGNLEN 8 /* File attributes */ -#define ATTR_RO 1 -#define ATTR_HIDDEN 2 -#define ATTR_SYS 4 -#define ATTR_VOLUME 8 -#define ATTR_DIR 16 -#define ATTR_ARCH 32 +#define ATTR_RO 1 +#define ATTR_HIDDEN 2 +#define ATTR_SYS 4 +#define ATTR_VOLUME 8 +#define ATTR_DIR 16 +#define ATTR_ARCH 32 -#define ATTR_VFAT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME) +#define ATTR_VFAT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME) #define DELETED_FLAG ((char)0xe5) /* Marks deleted files when in name[0] */ -#define aRING 0x05 /* Used to represent 'å' in name[0] */ +#define aRING 0x05 /* Used as special character in name[0] */ -/* Indicates that the entry is the last long entry in a set of long +/* + * Indicates that the entry is the last long entry in a set of long * dir entries */ #define LAST_LONG_ENTRY_MASK 0x40 /* Flags telling whether we should read a file or list a directory */ -#define LS_NO 0 -#define LS_YES 1 -#define LS_DIR 1 -#define LS_ROOT 2 +#define LS_NO 0 +#define LS_YES 1 +#define LS_DIR 1 +#define LS_ROOT 2 -#ifdef DEBUG -#define FAT_DPRINT(args...) printf(args) -#else -#define FAT_DPRINT(args...) -#endif -#define FAT_ERROR(arg) printf(arg) - -#define ISDIRDELIM(c) ((c) == '/' || (c) == '\\') +#define ISDIRDELIM(c) ((c) == '/' || (c) == '\\') #define FSTYPE_NONE (-1) @@ -101,17 +75,17 @@ #else #define FAT2CPU16(x) ((((x) & 0x00ff) << 8) | (((x) & 0xff00) >> 8)) #define FAT2CPU32(x) ((((x) & 0x000000ff) << 24) | \ - (((x) & 0x0000ff00) << 8) | \ + (((x) & 0x0000ff00) << 8) | \ (((x) & 0x00ff0000) >> 8) | \ (((x) & 0xff000000) >> 24)) #endif #endif -#define TOLOWER(c) if((c) >= 'A' && (c) <= 'Z'){(c)+=('a' - 'A');} #define START(dent) (FAT2CPU16((dent)->start) \ + (mydata->fatsize != 32 ? 0 : \ (FAT2CPU16((dent)->starthi) << 16))) - +#define CHECK_CLUST(x, fatsize) ((x) <= 1 || \ + (x) >= ((fatsize) != 32 ? 0xfff0 : 0xffffff0)) typedef struct boot_sector { __u8 ignored[3]; /* Bootstrap code */ @@ -165,29 +139,31 @@ typedef struct dir_entry { } dir_entry; typedef struct dir_slot { - __u8 id; /* Sequence number for slot */ - __u8 name0_4[10]; /* First 5 characters in name */ - __u8 attr; /* Attribute byte */ - __u8 reserved; /* Unused */ - __u8 alias_checksum;/* Checksum for 8.3 alias */ - __u8 name5_10[12]; /* 6 more characters in name */ - __u16 start; /* Unused */ - __u8 name11_12[4]; /* Last 2 characters in name */ + __u8 id; /* Sequence number for slot */ + __u8 name0_4[10]; /* First 5 characters in name */ + __u8 attr; /* Attribute byte */ + __u8 reserved; /* Unused */ + __u8 alias_checksum;/* Checksum for 8.3 alias */ + __u8 name5_10[12]; /* 6 more characters in name */ + __u16 start; /* Unused */ + __u8 name11_12[4]; /* Last 2 characters in name */ } dir_slot; -/* Private filesystem parameters +/* + * Private filesystem parameters * * Note: FAT buffer has to be 32 bit aligned * (see FAT32 accesses) */ typedef struct { - __u8 fatbuf[FATBUFSIZE]; /* Current FAT buffer */ + __u8 *fatbuf; /* Current FAT buffer */ int fatsize; /* Size of FAT in bits */ - __u16 fatlength; /* Length of FAT in sectors */ + __u32 fatlength; /* Length of FAT in sectors */ __u16 fat_sect; /* Starting sector of the FAT */ - __u16 rootdir_sect; /* Start sector of root directory */ + __u32 rootdir_sect; /* Start sector of root directory */ + __u16 sect_size; /* Size of sectors in bytes */ __u16 clust_size; /* Size of clusters in sectors */ - short data_begin; /* The sector of the first cluster, can be negative */ + int data_begin; /* The sector of the first cluster, can be negative */ int fatbufnum; /* Used by get_fatent, init to -1 */ } fsdata; @@ -197,10 +173,10 @@ typedef long (file_read_func)(const char *filename, void *buffer, unsigned long maxsize); struct filesystem { - file_detectfs_func *detect; - file_ls_func *ls; - file_read_func *read; - const char name[12]; + file_detectfs_func *detect; + file_ls_func *ls; + file_read_func *read; + const char name[12]; }; /* FAT tables */ @@ -212,8 +188,14 @@ file_read_func file_fat_read; int file_cd(const char *path); int file_fat_detectfs(void); int file_fat_ls(const char *dir); +long file_fat_read_at(const char *filename, unsigned long pos, void *buffer, + unsigned long maxsize); long file_fat_read(const char *filename, void *buffer, unsigned long maxsize); const char *file_getfsname(int idx); +int fat_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info); int fat_register_device(block_dev_desc_t *dev_desc, int part_no); +int file_fat_write(const char *filename, void *buffer, unsigned long maxsize); +int fat_read_file(const char *filename, void *buf, int offset, int len); +void fat_close(void); #endif /* _FAT_H_ */