u-boot.git/fs/fat, branch v2017.09

fs: fat: fix fatwrite overflow calculation

2017-08-26T18:56:07Z

The overflow calculation was incorrect. Adding the start block of the partition is not needed because the sectors are already relative to the beginning of the partition. If you attempted to write a file smaller than cur_part_info.start blocks on a full partition the old calculation fails to catch the overflow. This would cause an infinite loop in the determine_fatent function. Old, incorrect calculation: ending sector of new file = start sector + file size (in sectors) last sector = partition start + total sectors on the partition Adding the partition start block number is not needed because sectors are already relative to the start of the partition. New calculation: ending sector of new file = start sector + file size (in sectors) last sector = total sectors on the partition Signed-off-by: Reno Farnesi

fs/fat: Correct blk_dread() return value check

2017-08-20T13:54:31Z

The function blk_dread will return -ENOSYS on failure or on success the number of blocks read, which must be the number asked to read (otherwise it failed somewhere). Correct this check. Signed-off-by: Tom Rini

Kconfig: Add CONFIG_SATA to enable SATA

2017-07-11T16:08:19Z

At present CONFIG_CMD_SATA enables the 'sata' command which also brings in SATA support. Some boards may wish to enable SATA without the command. Add a separate CONFIG to permit this. Signed-off-by: Simon Glass Reviewed-by: Bin Meng

fs: fat: add kbuild configuration support

2017-06-03T21:55:16Z

Add Kconfig symbols for various configurations supported by FAT filesystem support code. CONFIG_SUPPORT_VFAT has been left out since its force enabled in include/fat.h and probably should get removed at some point. Signed-off-by: Sekhar Nori [trini: add select FS_FAT for CMD_FAT and SPL_FAT_SUPPORT] Signed-off-by: Tom Rini

Kconfig: Add a CONFIG_IDE option

2017-05-22T16:45:27Z

At present IDE support is controlled by CONFIG_CMD_IDE. Add a separate CONFIG_IDE option so that IDE support can be enabled without requiring the 'ide' command. Update existing users and move the ide driver into drivers/block since it should not be in common/. Signed-off-by: Simon Glass

fs/fat: Fix unaligned __u16 reads for FAT12 access

2017-01-28T19:04:51Z

Doing unaligned reads is not supported on all architectures, use byte sized reads of the little endian buffer. Rename off16 to off8, as it reflects the buffer offset in byte granularity (offset is in entry, i.e. 12 bit, granularity). Fix a regression introduced in 8d48c92b45aea91e2a2be90f2ed93677e85526f1 Reported-by: Oleksandr Tymoshenko Signed-off-by: Stefan Brüns Tested-by: Oleksandr Tymoshenko

cmd, disk: convert CONFIG_PARTITION_UUIDS, CMD_PART and CMD_GPT

2017-01-28T13:48:03Z

We convert CONFIG_PARTITION_UUIDS to Kconfig first. But in order to cleanly update all of the config files we must also update CMD_PART and CMD_GPT to also be in Kconfig in order to avoid complex logic elsewhere to update all of the config files. Signed-off-by: Patrick Delaunay Signed-off-by: Patrick Delaunay Signed-off-by: Tom Rini

fs/fat: simplify get_fatent for FAT12

2016-12-27T16:24:14Z

Instead of shuffling bits from two adjacent 16 bit words, use one 16 bit word with the appropriate byte offset in the buffer. Signed-off-by: Stefan Brüns

fs/fat: merge readwrite get_fatent_value() with readonly get_fatent()

2016-12-27T16:24:14Z

get_fatent_value(...) flushes changed FAT entries to disk when fetching the next FAT blocks, in every other aspect it is identical to get_fatent(...). Provide a stub implementation for flush_dirty_fat_buffer if CONFIG_FAT_WRITE is not set. Calling flush_dirty_fat_buffer during read only operation is fine as it checks if any buffers needs flushing. Signed-off-by: Stefan Brüns Reviewed-by: Benoît Thébaudeau

fs/fat: Avoid corruption of sectors following the FAT

2016-12-27T16:24:13Z

The FAT is read/flushed in segments of 6 (FATBUFBLOCKS) disk sectors. The last segment may be less than 6 sectors, cap the length. Signed-off-by: Stefan Brüns Reviewed-by: Benoît Thébaudeau