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(Experimental) Format only as exFAT - 1.2kb DFU

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Willy-JL
2024-02-14 17:48:27 +00:00
parent 5bd168c24b
commit 3e6c8b09fd
1 changed files with 22 additions and 0 deletions
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22
lib/fatfs/ff.c
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@@ -5297,6 +5297,7 @@ FRESULT f_forward (
/*-----------------------------------------------------------------------*/
/* Create an FAT/exFAT volume */
/*-----------------------------------------------------------------------*/
#define _MKFS_ONLY_EXFAT
FRESULT f_mkfs (
const TCHAR* path, /* Logical drive number */
@@ -5369,6 +5370,16 @@ FRESULT f_mkfs (
if (sz_vol < 128) return FR_MKFS_ABORTED; /* Check if volume size is >=128s */
/* Pre-determine the FAT type */
#ifdef _MKFS_ONLY_EXFAT
(void)sz_dir;
(void)sz_rsv;
(void)pau;
(void)cst32;
(void)cst;
(void)n_rootdir;
(void)n_fats;
fmt = FS_EXFAT;
#else
do {
if (_FS_EXFAT && (opt & FM_EXFAT)) { /* exFAT possible? */
if ((opt & FM_ANY) == FM_EXFAT || sz_vol >= 0x2000000 || au > 128) { /* exFAT only, vol >= 32Ms or au > 128s ? */
@@ -5384,6 +5395,7 @@ FRESULT f_mkfs (
if (!(opt & FM_FAT)) return FR_INVALID_PARAMETER; /* no-FAT? */
fmt = FS_FAT16;
} while (0);
#endif
#if _FS_EXFAT
if (fmt == FS_EXFAT) { /* Create an exFAT volume */
@@ -5548,6 +5560,11 @@ FRESULT f_mkfs (
} else
#endif /* _FS_EXFAT */
#ifdef _MKFS_ONLY_EXFAT
{
return FR_INVALID_PARAMETER;
}
#else
{ /* Create an FAT12/16/32 volume */
do {
pau = au;
@@ -5701,8 +5718,12 @@ FRESULT f_mkfs (
sect += n; nsect -= n;
} while (nsect);
}
#endif
/* Determine system ID in the partition table */
#ifdef _MKFS_ONLY_EXFAT
sys = 0x07; /* HPFS/NTFS/exFAT */
#else
if (_FS_EXFAT && fmt == FS_EXFAT) {
sys = 0x07; /* HPFS/NTFS/exFAT */
} else {
@@ -5716,6 +5737,7 @@ FRESULT f_mkfs (
}
}
}
#endif
/* Update partition information */
if (_MULTI_PARTITION && part != 0) { /* Created in the existing partition */