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board resets when i use bootm cmd to boot from nand



Hi All,

I'm using AM335x EVM and flashed the images using

U-Boot# nand erase.chip
U-Boot# tftp 0x81000000 MLO
U-Boot# cp.b 0x81000000 0x81020000 20000
U-Boot# cp.b 0x81000000 0x81040000 20000
U-Boot# cp.b 0x81000000 0x81060000 20000
U-Boot# tftp 0x81080000 u-boot.img
U-Boot# tftp 0x81280000 uImage
U-Boot# tftp 0x81780000 ubi.img
U-Boot# nand write 0x81000000 0x0 0x2000000

I tried manually by using bootm cmd at uboot prompt, none of the time it worked. Please tell me how to do it this way. some of the ways i tried.

1.

nand read ${loadaddr} 0x200000 0x3ed460
nand read ${rdaddr} 0xa00000 0x1f40000
nand read ${fdtaddr} 0x080000 0x7da3

bootm  ${loadaddr} ${rdaddr} ${fdtaddr}

error: Wrong Image Format for bootm command
ERROR: can't get kernel image!

2. bootm 0x200000 0xa00000 0x080000  --> board reset

3. bootm 0x08200000 0x08a00000 0x08080000  --> board reset

Please also tell me how to boot without filesystem.

Regards,

Gangadhar