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Diffstat (limited to 'qemu/roms/u-boot/doc/README.ext4')
| -rw-r--r-- | qemu/roms/u-boot/doc/README.ext4 | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/qemu/roms/u-boot/doc/README.ext4 b/qemu/roms/u-boot/doc/README.ext4 deleted file mode 100644 index 9a2de5088..000000000 --- a/qemu/roms/u-boot/doc/README.ext4 +++ /dev/null @@ -1,59 +0,0 @@ -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 |