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 192.168.1.10;setenv ipaddr 192.168.1.12;setenv netmask 255.255.0.0;setenv gatewayip 192.168.1.1
3дӳļSPI Flash
    32M SPI FlashΪ
    1ַռ˵
        |  256K  |  64K  |   3M   |    3M   |  22016K | 3904K  |  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_V181129;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_V181122;sf probe 0;sf erase 50000 300000;sf write 82000000 50000 300000
    4)дļϵͳ UB_ROOTFS_BIT
        mw.b 82000000 ff 300000;tftp 0x82000000 rootfs_V181129;sf probe 0;sf erase 350000 300000;sf write 82000000 350000 300000
    5)дapp UB_APP_BIT
		mw.b 82000000 ff 1580000;tftp 0x82000000 app_V190313_IPC3519_32M_M;sf probe 0;sf erase 650000 1540000;sf write 82000000 650000 1580000
	6)дWWW UB_WWW_BIT
		mw.b 82000000 ff 3d0000;tftp 0x82000000 www_V181130;sf probe 0;sf erase 1bD0000 3d0000;sf write 82000000 1bD0000 3d0000	
    7 UB_ENVAR_BIT
		setenv bootargs 'mem=98M console=ttyAMA0,115200 root=/dev/mtdblock2 rootfstype=squashfs mtdparts=hi_sfc:320K(boot),3M(kernel),3M(rootfs),22016K(app),3904K(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 1fa0000 40000
    9)ݲ UB_PARACLR_BIT	
    	sf probe 0;sf erase 1FE0000 10000
