u-boot user space envtools config fiile example

cat /etc/fw_env.config
# MTD device name       Device offset   Env. size       Flash sector size       Number of sectors
/dev/mtd1               0x0000          0x10000          0x10000 1

       This example demo u-boot env on mtd partition index 1, start offset for mtd1 is 0,
u-boot env size define in your u-boot board config is 0x10000 ,flash sector size is 0x10000, number sector size is 1.

 
 

Dwongrad squashfs from 4.x to 3.x for linux 3.x

 1. get DDWRT source ,sync linux 3.3 fs to your linux 3.3 source .
 (1)     fs/squashfs -> complete change
 (2)    fs/Kconfig - > merge
 (3)   include/linux/  add 3 file to your linux 3.x /include/linux
    squashfs_fs.h
    squashfs_fs_i.h
    squashfs_fs_sb.h
 
   (4) sync include/linux/magic.h  /* main purpose mark squash4 magic //#define SQUASHFS_MAGIC 0x73717368*/