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FatFs: Apply patch ff12a_p5.diff.

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Fixed one chunk of this patch in an earlier commit.
This commit is contained in:
Jared Boone 2016-08-21 23:02:00 -07:00
parent 81517b3f4d
commit 60cc9b7faa
1 changed files with 26 additions and 21 deletions
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47
firmware/chibios-portapack/ext/fatfs/src/ff.c
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@ -5303,7 +5303,7 @@ FRESULT f_mkfs (
#if _FS_EXFAT
if (fmt == FS_EXFAT) { /* Create an exFAT volume */
DWORD sum, szb_bit, szb_case;
DWORD szb_bit, szb_case, sum, nb, cl;
WCHAR ch, si;
UINT j, st;
BYTE b;
@ -5368,32 +5368,37 @@ FRESULT f_mkfs (
tbl[1] = (szb_case + au * ss - 1) / (au * ss); /* Number of up-case clusters */
/* Initialize the allocation bitmap */
mem_set(buf, 0, szb_buf); /* Set in-use flags of bitmap, up-case and root dir */
for (i = 0, n = tbl[0] + tbl[1] + tbl[2]; n >= 8; buf[i++] = 0xFF, n -= 8) ;
for (b = 1; n; buf[i] |= b, b <<= 1, n--) ;
sect = b_data; n = (szb_bit + ss - 1) / ss; /* Start of bitmap and number of the sectors */
do { /* Fill allocation bitmap sectors */
ns = (n > sz_buf) ? sz_buf : n;
nb = tbl[0] + tbl[1] + tbl[2]; /* Number of clusters in-use by system */
do {
mem_set(buf, 0, szb_buf);
for (i = 0; nb >= 8 && i < szb_buf; buf[i++] = 0xFF, nb -= 8) ;
for (b = 1; nb && i < szb_buf; buf[i] |= b, b <<= 1, nb--) ;
ns = (n > sz_buf) ? sz_buf : n; /* Write the buffered data */
if (disk_write(pdrv, buf, sect, ns) != RES_OK) return FR_DISK_ERR;
sect += ns;
mem_set(buf, 0, ss);
} while (n -= ns);
sect += ns; n -= ns;
} while (n);
/* Initialize the FAT */
st_qword(buf, 0xFFFFFFFFFFFFFFF8); /* Entry 0 and 1 */
for (j = 0, i = 2; j < 3; j++) { /* Set entries of bitmap, up-case and root dir */
for (n = tbl[j]; n; n--) {
st_dword(buf + i * 4, (n >= 2) ? i + 1 : 0xFFFFFFFF);
i++;
}
}
sect = b_fat; n = sz_fat; /* Start of FAT and number of the sectors */
do { /* Fill FAT sectors */
ns = (n > sz_buf) ? sz_buf : n;
j = nb = cl = 0;
do {
mem_set(buf, 0, szb_buf); i = 0;
if (cl == 0) { /* Set entry 0 and 1 */
st_dword(buf + i, 0xFFFFFFF8); i += 4; cl++;
st_dword(buf + i, 0xFFFFFFFF); i += 4; cl++;
}
do { /* Create chains of bitmap, up-case and root dir */
while (nb && i < szb_buf) { /* Create a chain */
st_dword(buf + i, (nb > 1) ? cl + 1 : 0xFFFFFFFF);
i += 4; cl++; nb--;
}
if (!nb && j < 3) nb = tbl[j++]; /* Next chain */
} while (nb && i < szb_buf);
ns = (n > sz_buf) ? sz_buf : n; /* Write the buffered data */
if (disk_write(pdrv, buf, sect, ns) != RES_OK) return FR_DISK_ERR;
sect += ns;
mem_set(buf, 0, ss);
} while (n -= ns);
sect += ns; n -= ns;
} while (n);
/* Initialize the root directory */
mem_set(buf, 0, ss);