From: Uma Shankar <uma.shan...@samsung.com>
***
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_ext2.c | 1 +
common/cmd_ext4.c | 388 ++++++++++
fs/Makefile | 1 +
fs/ext2/dev.c | 1 +
fs/ext2/ext2fs.c | 340 +--------
fs/ext4/Makefile | 51 ++
fs/ext4/crc16.c | 62 ++
fs/ext4/crc16.h | 16 +
fs/ext4/ext4_common.c | 1955 ++++++++++++++++++++++++++++++++++++++++++++++++
fs/ext4/ext4_common.h | 61 ++
fs/ext4/ext4_journal.c | 650 ++++++++++++++++
fs/ext4/ext4_journal.h | 147 ++++
fs/ext4/ext4fs.c | 1251 +++++++++++++++++++++++++++++++
include/ext2fs.h | 16 +-
include/ext4fs.h | 124 +++
include/ext_common.h | 199 +++++
18 files changed, 4942 insertions(+), 324 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
create mode 100644 include/ext_common.h
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