Hi All,

I am trying to boot Linux from uboot. I have cross compiled Linux and ramdisk for my board. After cross compilation i did a tftp to download the image(Linux + Filesystem) to RAM(0x80800000) . From there i copied it to flash(0xad040000).

Now on a reset u boot comes up and then when trying to bring LINUX it throws an error saying

Verifying Checksum.......Bad data CRC.

Then uboot prompt appears.

This is what happened.....

U-Boot 1.1.2 (Jun 10 2008 - 18:55:13)

Board: MIPS CPU Speed 200 MHz DRAM: 16 MB sflash.c:266:DF_F_DataflashProbe: Entered sflash.c:269:DF_F_DataflashProbe: flash type is 0x1 sflash.c:270:DF_F_DataflashProbe: num pages 32768 DataFlash:Nb pages: 32768 Page Size: 256 Size= 8388608 bytes Logical address: 0xAD000000 Nb Erase Blocks: 128 Erase Block Size: 65536 Area 0: AD000000 to AD003FFF Area 1: AD004000 to AD03FFFF Area 2: AD040000 to AD30BFFF Area 3: AD30C000 to AD7FFFFF crc matched In: serial Out: serial Err: serial Net: Eth.

Type "run flash_nfs" to mount root filesystem over NFS

Hit any key to stop autoboot: 0 ### JFFS2 loading '/boot/uImage' to 0x80800000 Scanning JFFS2 FS: .................... done. ### JFFS2 load complete: 3249008 bytes loaded to 0x80800000 ## Booting image at 80800000 ... Image Name: Linux Kernel Image with ramdisk. Created: 2009-06-22 4:37:12 UTC Image Type: MIPS Linux Kernel Image (gzip compressed) Data Size: 3248944 Bytes = 3.1 MB Load Address: 80100000 Entry Point: 80578000 Verifying Checksum ... Bad Data CRC UBOOT>

UBOOT # printenv bootargs=console=ttyS0,38400 nofpu mem=14M root=/dev/ram0 rw bootcmd=fsload 0x80800000 /boot/uImage; bootm 0x80800000 bootdelay=5 baudrate=38400 ethaddr=00:06:0D:00:00:00 preboot=echo;echo Type "run flash_nfs" to mount root filesystem over NFS;echo nfsargs=setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) btargs=setenv bootargs console=ttyS0,$(baudrate) nofpu mem=30M root=/dev/ram0 rw addip=setenv bootargs $(bootargs) ip=$(ipaddr):$(serverip):$(gatewayip):$(netmas k):$(hostname):$(netdev):off addmisc=setenv bootargs $(bootargs) console=ttyS0,$(baudrate) ethaddr=$(ethaddr) panic=1 flash_nfs=run nfsargs addip addmisc;bootm $(kernel_addr) flash_self=run ramargs addip addmisc;bootm $(kernel_addr) $(ramdisk_addr) net_nfs=tftp 80500000 $(bootfile);run nfsargs addip addmisc;bootm netbootfile=uImage jffsfile=jffs.1.1 progjffs=tftp 0x80800000 $(jffsfile); erase 0xad040000 0xad3bffff; cp.b 0x808000 00 0xad040000 $(filesize) imget=tftp 0x80800000 refmta.bin;erase 0xad000000 0xad3e0000;cp.b 0x80800000 0xa d000000 $(filesize) localbootfile=/boot/uImage bootnet=tftp 0x80800000 $(netbootfile); bootm 0x80800000 kernel_addr=AD040000 u-bootfile=u-boot.ctlm.bin load-ub=tftp 80504000 $(u-bootfile) update-ub=protect off 1:0-4;cp.b AD000000 80500000 4000;cp.b AD03F000 8053F000 1 000;erase 0xAD000000 0xAD03ffff;cp.b 80500000 AD000000 0x40000 btlinux=fsload 0x80800000 $(localbootfile); bootm 0x80800000 ethact=Eth. netmask=255.255.0.0 serverip=10.47.3.54 ipaddr=10.47.252.254 stdin=serial stdout=serial stderr=serial filesize=319370

Environment size: 1554/4092 bytes

Please throw some light on this.

Thanks Rahanesh