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bdk: fatfs: mkfs alignment changes
- Default data alignment is now 1MB **when it's not set** - Default volume alignment is now based on data alignment and not hardcoded to 16MB. - Change max allowed alignment to 64MB. The above changes allow selecting alignments for volume and data between 1MB and 64MB. (From the previous 1 to 16MB for data and 16MB for volume).
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1 changed files with 2 additions and 2 deletions
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@ -5879,7 +5879,7 @@ FRESULT f_mkfs (
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stat = disk_initialize(pdrv);
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if (stat & STA_NOINIT) return FR_NOT_READY;
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if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
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if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk) != RES_OK || !sz_blk || sz_blk > 32768 || (sz_blk & (sz_blk - 1))) sz_blk = 1; /* Erase block to align data area */
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if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk) != RES_OK || !sz_blk || sz_blk > 131072 || (sz_blk & (sz_blk - 1))) sz_blk = 2048; /* Erase block to align data area. 1MB minimum */
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#if FF_MAX_SS != FF_MIN_SS /* Get sector size of the medium if variable sector size cfg. */
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if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;
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if (ss > FF_MAX_SS || ss < FF_MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;
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@ -5915,7 +5915,7 @@ FRESULT f_mkfs (
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} else {
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/* Create a single-partition in this function */
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if (disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_vol) != RES_OK) LEAVE_MKFS(FR_DISK_ERR);
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b_vol = (opt & FM_SFD) ? 0 : 32768; /* Volume start sector. Align to 16MB */
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b_vol = (opt & FM_SFD) ? 0 : sz_blk; /* Volume start sector */
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if (sz_vol < b_vol) LEAVE_MKFS(FR_MKFS_ABORTED);
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sz_vol -= b_vol; /* Volume size */
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}
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