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.shan...@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
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
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
