[U-Boot] Subject: [PATCH 0/2] ** Add ext4 filesystem support in uboot **

[Graeme Russ]

Hi Uma,

On 12/12/11 21:37, uma.shankar at samsung.com wrote:
> Hi All,
> We at Samsung have implemented ext4 file system support in uboot. Please
> review the subsequent patches.
> 
> Thanks & Regards,
> Uma Shankar
> Manjunatha C Achar
> 
> 
> From: Uma Shankar <uma.shankar at samsung.com>
> Date: Mon, 12 Dec 2011 12:01:23 +0530
> Subject: [PATCH 0/2] *** Add ext4 filesystem support in uboot ***
> 
> ***
> This patch series adds support for ext4 ls,load and write features in uboot
> Journaling is supported for write feature.
> 
> To Enable EXT4 commands, modify the board specific config file with
> #define CONFIG_CMD_EXT2 1
> #define CONFIG_CMD_EXT4 1
> Steps to test:
> 
> 1. After applying the patch, ext4 specific commands can be seen
>   in the boot loader prompt using
> UBOOT #help
> 
> ext4load- load binary file from a Ext4 file system
> ext4ls  - list files in a directory (default /)
> ext4write- create a file in ext4 formatted partition
> 
> 2. To list the files in ext4 formatted partition, execute
> ext4ls <interface> <dev[:part]> [directory]
> For example:
> UBOOT #ext4ls mmc 0:5 /usr/lib
> 
> 3. To read and load a file from an ext4 formatted partition to RAM, execute
> ext4load <interface> <dev[:part]> [addr] [filename] [bytes]
> For example:
> UBOOT #ext4load mmc 2:2 0x30007fc0 uImage
> 
> 4. To write a file to a ext4 formatted partition.
> a) First load a file to RAM at a particular address for example 0x30007fc0.
> Now execute ext4write command
> ext4write <interface> <dev[:part]> [filename] [Address] [sizebytes]
> For example:
> UBOOT #ext4write mmc 2:2 /boot/uImage 0x30007fc0 6183120
> (here 6183120 is the size of the file to be written)
> Note: Absolute path is required for the file to be written
> 
> ***
> 
> Uma Shankar (2):
>  ext4fs ls load support
>  ext4fs write support

I notice different coding styles in the two patches - In particular, the
first patch uses spaces for indentation and the second (correctly) uses tabs

Can you please run the 'checkpatch' script (it in the root of the u-boot
tree) on both and correct any errors and warnings

Regards,

Graeme
> 
> Makefile               |    2 +-
> common/Makefile        |    1 +
> common/cmd_ext4.c      |  388 ++++++++++
> fs/Makefile            |    1 +
> fs/ext2/ext2fs.c       |  303 +--------
> fs/ext4/Makefile       |   51 ++
> fs/ext4/crc16.c        |   61 ++
> fs/ext4/crc16.h        |   17 +
> fs/ext4/ext4_common.c  | 1954 ++++++++++++++++++++++++++++++++++++++++++++++++
> fs/ext4/ext4_common.h  |   61 ++
> fs/ext4/ext4_journal.c |  657 ++++++++++++++++
> fs/ext4/ext4_journal.h |  147 ++++
> fs/ext4/ext4fs.c       | 1252 +++++++++++++++++++++++++++++++
> include/ext2fs.h       |  177 +++++-
> include/ext4fs.h       |  172 +++++
> 15 files changed, 4937 insertions(+), 307 deletions(-)
> create mode 100644 common/cmd_ext4.c
> create mode 100644 fs/ext4/Makefile
> create mode 100644 fs/ext4/crc16.c
> create mode 100644 fs/ext4/crc16.h
> create mode 100644 fs/ext4/ext4_common.c
> create mode 100644 fs/ext4/ext4_common.h
> create mode 100644 fs/ext4/ext4_journal.c
> create mode 100644 fs/ext4/ext4_journal.h
> create mode 100644 fs/ext4/ext4fs.c
> create mode 100644 include/ext4fs.h
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