u-boot.git/fs/ext4, branch v2013.01

fs:ext4:write: Initialize cache aligned filename buffer

2012-12-07T15:47:53+00:00

The filename buffer is allocated dynamically. It must be cache aligned.
Moreover, it is necessary to erase its content before we use it for
file name operations.

This prevents from corruption of written file names.

Signed-off-by: Lukasz Majewski 
Signed-off-by: Kyungmin Park

fs:ext4:fix: Code refactoring to suppress compiler warnings

2012-12-07T15:47:53+00:00

Several fixes to suppress compiler's (eldk-5.[12].x  gcc 4.6)
warning  [-Wunused-but-set-variable]

Signed-off-by: Lukasz Majewski 
Signed-off-by: Kyungmin Park

fs:ext4:write: Store block device descriptor in file system structure

2012-12-07T15:47:52+00:00

The device block descriptor (block_dev_desc_t) )shall be stored at
ext4 early code (at ext4fs_set_blk_dev in this case) to be available
for latter use (like put_ext4()).

Signed-off-by: Lukasz Majewski 
Signed-off-by: Kyungmin Park

fs:ext4:write: Add lldiv and do_div to perform 64-32 bits division

2012-12-07T15:47:52+00:00

The ext4write code has been using direct calls to 64-32 division
(/ and %).

Officially supported u-boot toolchains (eldk-5.[12].x) generate calls
to __aeabi_uldivmod(), which is niether defined in the toolchain libs
nor u-boot source tree.

Due to that, when the ext4write command has been executed, "undefined
instruction" execption was generated (since the __aeabi_uldivmod()
is not provided).

To fix this error, lldiv() for division and do_div() for modulo have
been used.

Those two functions are recommended for performing 64-32 bit number
division in u-boot.

Signed-off-by: Lukasz Majewski 
Signed-off-by: Kyungmin Park

fs: separate CONFIG_FS_{FAT, EXT4} from CONFIG_CMD_{FAT, EXT*}

2012-10-29T21:21:19+00:00

This makes the FAT and ext4 filesystem implementations build if
CONFIG_FS_{FAT,EXT4} are defined, rather than basing the build on
whether CONFIG_CMD_{FAT,EXT*} are defined. This will allow the
filesystems to be built separately from the filesystem-specific commands
that use them. This paves the way for the creation of filesystem-generic
commands that used the filesystems, without requiring the filesystem-
specific commands.

Minor documentation changes are made for this change.

The new config options are automatically selected by the old config
options to retain backwards-compatibility.

Signed-off-by: Stephen Warren 
Reviewed-by: Benoît Thébaudeau

ext4: Rename block group descriptor table from gd to bgd

2012-10-04T01:21:33+00:00

On x86 machines gd is unfortunately a #define, so we should avoid using
gd for anything. This patch changes uses of gd to bgd so that ext4fs
can be used on x86.

A better fix would be to remove the #define in x86, but I'm not sure
how to do that.

Signed-off-by: Simon Glass

cmd_extX: use common get_device_and_partition function

2012-09-25T21:46:55+00:00

Convert ext2/4 load, ls, and write functions to use common device and
partition parsing function. With the common function "dev:part" can come
from the environment and a '-' can be used in that case.

Signed-off-by: Rob Herring

ext4: remove init_fs/deinit_fs

2012-09-25T21:46:35+00:00

There's no real need to expose this and it can be removed by using a static
allocation.

Signed-off-by: Rob Herring

ext4: cache-align buffers so the invalidation works

2012-09-20T18:07:26+00:00

DMA buffer cache invalidation requires that buffers have cache-aligned
buffer locations and sizes. Use memalign() and ALLOC_CACHE_ALIGN_BUFFER()
to ensure this.

On Tegra at least, without this fix, the following fail commands fail in
u-boot-master/ext4, but succeeded at the branch's branch point in
u-boot/master. With this fix, the commands work again:

ext2ls mmc 0:1 /
ext2load mmc 0:1 /boot/zImage

Cc: Uma Shankar 
Cc: Manjunatha C Achar 
Cc: Iqbal Shareef 
Cc: Hakgoo Lee 
Cc: Wolfgang Denk 
Cc: Tom Rini 
Signed-off-by: Stephen Warren

ext4fs write support

2012-08-09T21:48:02+00:00

Signed-off-by: Uma Shankar 
Signed-off-by: Manjunatha C Achar 
Signed-off-by: Iqbal Shareef 
Signed-off-by: Hakgoo Lee