想要实现linux自升级,即在linux下操作nandflash,将固件(文件系统,kernel等)写到nandflash中

mtd表

dev:    size   erasesize  name
mtd0: 00080000 00020000 "loader"            //512K
mtd1: 00100000 00020000 "uboot"             //1M
mtd2: 00080000 00020000 "envirment"         //512K
mtd3: 00800000 00020000 "kernel"            //8M
mtd4: 00100000 00020000 "device-tree"       //1M
mtd5: 03400000 00020000 "rootfs_uRamdisk"   //52M
mtd6: 1c000000 00020000 "userfilesystem"    //448M

要擦写的分区 /dev/mtd5 信息

root@lig-ppc:/nandflash# mtd_debug info /dev/mtd5
mtd.type = MTD_NANDFLASH
mtd.flags = MTD_CAP_NANDFLASH
mtd.size = 54525952 (52M)
mtd.erasesize = 131072 (128K)
mtd.writesize = 2048 (2K)
mtd.oobsize = 64 
regions = 0

操作

1.flash_eraseall /dev/mtd5
2.nandwrite -p /dev/mtd5 uRamdisk_upgrade

uboot中的启动信息
正常:

 ## Loading init Ramdisk from Legacy Image at 03000000 ...
   Image Name:   init ramdisk
   Created:      2017-12-04   8:20:58 UTC
   Image Type:   PowerPC Linux RAMDisk Image (gzip compressed)
   Data Size:    12549477 Bytes = 12 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK

擦写后

.....
UnCorrectable RS-ECC Error
UnCorrectable RS-ECC Error
UnCorrectable RS-ECC Error
UnCorrectable RS-ECC Error
.....
 ## Loading init Ramdisk from Legacy Image at 03000000 ...
   Image Name:   init ramdisk
   Created:      2017-12-04   8:20:58 UTC
   Image Type:   PowerPC Linux RAMDisk Image (gzip compressed)
   Data Size:    12549477 Bytes = 12 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... Bad Data CRC
Ramdisk image is corrupt or invalid

uboot下操作nandwrite时,能正常启动,目前就是在linux下进行nandwrite操作,无法正常启动

文件大小读取的是正确的,但是校验错误了,请教大神,这个校验问题怎么解决?或者这个问题的解决思路应该怎么办?