hi3518a怎么修改uboot可以使之支持Image启动

各位大神：原本所用内核镜像为uImage，不过想把速度提上去点更换uImage为Image，但系统起不来，不知道要修改
                uboot的哪些地方？本人小菜鸟
                所用存储为SPI，贴上打印信息如下*******************************************************
U-Boot 2010.06 (May 30 2016 - 18:30:45)

Check spi flash controller v350... Found
Spi(cs1) ID: 0xEF 0x40 0x17 0x00 0x00 0x00
Spi(cs1): Block:64KB Chip:8MB Name:"W25Q64FV"
Special Nand id table Version 1.35
Nand ID: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
No NAND device found!!!
In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
8192 KiB hi_sfc at 0:0 is now current device

Wrong Image Format for bootm command
ERROR: can't get kernel image!
hisilicon # print
baudrate=115200
ethaddr=00:00:23:34:45:66
ipaddr=192.168.1.10
serverip=192.168.1.2
netmask=255.255.255.0
bootargs=mem=64M console=ttyAMA1,115200 root=/dev/mtdblock2 rootfstype=squashfs mtdparts=hi_sfc:1M(boot),3M(kernel),4M(rootfs)
bootfile=uImage
bootcmd=sf probe 0;sf read 0x82000000 0x100000 0xc3000;bootm 0x82000000
bootdelay=1
stdin=serial
stdout=serial
stderr=serial
verify=n
ver=U-Boot 2010.06 (May 30 2016 - 18:30:45)