u-boot.git/fs/fat, branch v2017.07

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

fat: fatwrite: fix the command for FAT12

2016-12-27T16:24:13Z

The u-boot command fatwrite empties FAT clusters from the beginning till the end of the file. Specifically for FAT12 it fails to detect the end of the file and goes beyond the file bounds thus corrupting the file system. Additionally, FAT entry chaining-up into a file is not implemented for FAT12. The users normally workaround this by re-formatting the partition as FAT16/FAT32, like here: https://github.com/FEDEVEL/openrex-uboot-v2015.10/issues/1 The patch fixes the bounds of a file and FAT12 entries chaining into a file, including EOF markup. Signed-off-by: Philipp Skadorov

fs/fat/fatwrite: Local variable as buffer to store dir_slot entries

2016-11-29T01:09:45Z

fill_dir_slot use get_contents_vfatname_block as a temporary buffer for constructing a list of dir_slot entries. To save the memory and providing correct type of memory for above usage, a local buffer with accurate size declaration is introduced. The local array size 640 is used because for long file name entry, each entry use 32 bytes, one entry can store up to 13 characters. The maximum number of entry possible is 20. So, total size is 32*20=640bytes. Signed-off-by: Genevieve Chan Signed-off-by: Tien Fong Chee

fs/fat: Correct description of determine_fatent function

2016-09-23T12:55:57Z

Current description does not match the function behaviour. Signed-off-by: Stefan Brüns Acked-by: Lukasz Majewski