2
    # ϵu-bootserveriptftpipipaddripethaddrMACַ
    setenv serverip xx.xx.xx.xx
    setenv ipaddr xx.xx.xx.xx 
    setenv ethaddr xx:xx:xx:xx:xx:xx
    setenv netmask xx.xx.xx.xx
    setenv gatewayip xx.xx.xx.xx
    ping serveripȷ糩ͨ

	setenv serverip 172.18.6.62;setenv ipaddr 172.18.12.120;setenv netmask 255.255.0.0;setenv gatewayip 172.18.0.1
3дӳļSPI Flash
    16M SPI FlashΪ
    1ַռ˵
        |  256K  |  64K  |   3M   |   2752K |  6400K | 3456K  |  256K | 64K |  64K  |
        |--------|-------|--------|---------|--------|--------|-------|-----|-------|
        |  boot  | para  | kernel |  rootfs |   app  |  www   |  para | p2p |  log  |

        µĲͼʾĵַռ䣬ҲԸʵе
    2дu-boot UB_BOOT_BIT
        sf probe 0;mw.b 82000000 ff 40000;tftp 0x82000000 uboot_V160823;sf probe 0;sf erase 0 40000;sf write 82000000 0 40000	
        reset    
    3дں UB_KERNEL_BIT
        mw.b 82000000 ff 300000;tftp 82000000 kernel_V180604;sf probe 0;sf erase 50000 300000;sf write 82000000 50000 300000
    4)дļϵͳ UB_ROOTFS_BIT
        mw.b 82000000 ff 2b0000;tftp 0x82000000 rootfs_V180613;sf probe 0;sf erase 350000 2b0000;sf write 82000000 350000 2b0000
    5)дapp UB_APP_BIT
		mw.b 82000000 ff 640000;tftp 0x82000000 app_V180613_IPC3519_M;sf probe 0;sf erase 600000 640000;sf write 82000000 600000 640000
	6)дWWW UB_WWW_BIT
		mw.b 82000000 ff 360000;tftp 0x82000000 www_V180711;sf probe 0;sf erase c40000 360000;sf write 82000000 c40000 360000	
    7 UB_ENVAR_BIT
    	setenv bootargs 'mem=80M console=ttyAMA0,115200 root=/dev/mtdblock2 rootfstype=squashfs mtdparts=hi_sfc:320K(boot),3M(kernel),2752K(rootfs),6400K(app),3456K(www),256K(para),64K(p2p),64K(log)';
        setenv bootcmd 'sf probe 0;sf read 0x82000000 0x50000 0x300000;bootm 0x82000000';sa;
    8) UB_PARACLR_BIT
    	sf probe 0;sf erase fa0000 20000
    9)ݲ UB_PARACLR_BIT	
    	sf probe 0;sf erase fc0000 20000