u-boot.git/fs/ext2, branch master

ext4fs ls load support

2012-08-09T21:47:43+00:00

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

ext2fs: fix warning: 'blocknxt' may be used uninitialized with gcc 4.2

2012-08-07T18:52:42+00:00

The above warning was introduced originally in 436da3c "ext2load:
increase read speed" and fixed for newer toolchains in b803273 "ext2fs:
fix warning: 'blocknxt' may be used uninitialized".  This change did not
fix the warning with gcc 4.2, as found in ELDK 4.2.

If we rework the while loop to initalize blocknxt before entering the
warning really goes away.  Tested on am335x with an approx 7mb file and
crc32 in U-Boot befor and after this change.

Cc: Wolfgang Denk 
Cc: Eric Nelson 
Cc: Thierry Reding 
Cc: Jason Cooper 
Cc: Andreas Bießmann 
Cc: Reinhard Arlt 
Cc: Kim Phillips 
Signed-off-by: Tom Rini

ext2fs: fix warning: 'blocknxt' may be used uninitialized

2012-07-08T20:55:04+00:00

This warning was introduced in 436da3c "ext2load: increase read
speed":

ext2fs.c: In function 'ext2fs_read_file':
ext2fs.c:458:19: warning: 'blocknxt' may be used uninitialized in this function [-Wuninitialized]

this change makes it go away.

Cc: Eric Nelson 
Cc: Thierry Reding 
Cc: Jason Cooper 
Cc: Andreas Bießmann 
Cc: Reinhard Arlt 
Signed-off-by: Kim Phillips

ext2load: increase read speed

2012-06-21T20:49:33+00:00

This patch dramatically drops the amount of time u-boot needs to read a
file from an ext2 partition.  On a typical 2 to 5 MB file (kernels and
initrds) it goes from tens of seconds to a couple seconds.

All we are doing here is grouping contiguous blocks into one read.

Boot tested on Globalscale Technologies Dreamplug (Kirkwood ARM SoC)
with three different files.  sha1sums were calculated in Linux
userspace, and then confirmed after ext2load.

Signed-off-by: Jason Cooper 
Tested-by: Eric Nelson 
Tested-by: Thierry Reding

ext2: Cache line align indirection buffers

2012-01-05T16:12:11+00:00

Make ext2 use cache line aligned buffers for reading from the filesystem.
This is needed when caches are enabled because unaligned cache invalidates
are not safe.

Signed-off-by: Simon Glass

ext2: Cache line aligned partial sector bounce buffer

2011-10-25T07:25:41+00:00

Currently, if a device read request is done that does not begin or end
on a sector boundary a stack allocated bounce buffer is used to perform
the read, and then just the part of the sector that is needed is copied
into the users buffer.  This stack allocation can mean that the bounce
buffer will not be aligned to the dcache line size.  This is a problem
when caches are enabled because unaligned cache invalidates are not
safe.

This patch uses ALLOC_CACHE_ALIGN_BUFFER to create a stack allocated
cache line size aligned bounce buffer.

Signed-off-by: Anton Staaf 
Cc: Lukasz Majewski 
Cc: Mike Frysinger 
Cc: Dave Liu 
Cc: Andy Fleming 
Cc: Albert ARIBAUD 

Change-Id: I32e1594d90ef039137bb219b0f7ced55768744ff
Acked-by: Mike Frysinger

ext2: Simplify partial sector access logic

2011-07-28T13:36:32+00:00

Previously reading or writing zero full sectors (reading the end of
one sector and the beginning of the next for example) was special
cased and involved stack allocating a second sector buffer.  This
change uses the same code path for this case as well as when there
are a non-zero number of full sectors to access.  The result is
easier to read and reduces the maximum stack used.

Signed-off-by: Anton Staaf 
Cc: Andy Fleming 
Acked-by: Detlev Zundel

ext2: Fix checkpatch violations

2011-07-28T13:36:10+00:00

Fix all checkpatch violations in the low level Ext2 block
device reading code.  This is done in preparation for cleaning
up the partial sector access code.

Signed-off-by: Anton Staaf 
Cc: Andy Fleming 
Acked-by: Detlev Zundel

ext2: constify file/dir names

2010-11-28T20:58:51+00:00

Signed-off-by: Mike Frysinger

Switch from archive libraries to partial linking

2010-11-17T20:02:18+00:00

Before this commit, weak symbols were not overridden by non-weak symbols
found in archive libraries when linking with recent versions of
binutils.  As stated in the System V ABI, "the link editor does not
extract archive members to resolve undefined weak symbols".

This commit changes all Makefiles to use partial linking (ld -r) instead
of creating library archives, which forces all symbols to participate in
linking, allowing non-weak symbols to override weak symbols as intended.
This approach is also used by Linux, from which the gmake function
cmd_link_o_target (defined in config.mk and used in all Makefiles) is
inspired.

The name of each former library archive is preserved except for
extensions which change from ".a" to ".o".  This commit updates
references accordingly where needed, in particular in some linker
scripts.

This commit reveals board configurations that exclude some features but
include source files that depend these disabled features in the build,
resulting in undefined symbols.  Known such cases include:
- disabling CMD_NET but not CMD_NFS;
- enabling CONFIG_OF_LIBFDT but not CONFIG_QE.

Signed-off-by: Sebastien Carlier