mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
03e2ecf6b8
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 <swarren@nvidia.com>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
59 lines
2.2 KiB
Text
59 lines
2.2 KiB
Text
This patch series adds support for ext4 ls,load and write features in uboot
|
|
Journaling is supported for write feature.
|
|
|
|
To enable support for the ext4 (and ext2) filesystem implementation,
|
|
#define CONFIG_FS_EXT4
|
|
|
|
If you want write support,
|
|
#define CONFIG_EXT4_WRITE
|
|
|
|
To Enable ext2 ls and load commands, modify the board specific config file with
|
|
#define CONFIG_CMD_EXT2
|
|
This automatically defines CONFIG_FS_EXT4 for you.
|
|
|
|
To Enable ext4 ls and load commands, modify the board specific config file with
|
|
#define CONFIG_CMD_EXT4
|
|
This automatically defines CONFIG_FS_EXT4 for you.
|
|
|
|
To enable ext4 write command, modify the board specific config file with
|
|
#define CONFIG_CMD_EXT4
|
|
#define CONFIG_CMD_EXT4_WRITE
|
|
These automatically define CONFIG_FS_EXT4 and CONFIG_EXT4_WRITE for you.
|
|
|
|
Also relevant are the generic filesystem commands,
|
|
#define CONFIG_CMD_FS_GENERIC
|
|
This does not automatically enable EXT4 support for you.
|
|
|
|
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
|
|
|
|
References :
|
|
-- ext4 implementation in Linux Kernel
|
|
-- Uboot existing ext2 load and ls implementation
|
|
-- Journaling block device JBD2 implementation in linux Kernel
|