I have u-boot work with memory only (my flash driver doesnot work yet), so I try to load linux to memory and give a try, but I find uImage have 40 bytes header, how I can boot linux by using u-boot command-line? Do I misunderstand something here?

Following is what I did: ================================================== BRCM5001 # loadb 06008000 BRCM5001 # md 06008000 06008000: 27051956 39440bb6 43d6c107 000a01a8 '..V9D..C....... 06008010: 06008000 06008000 73966e28 05020200 ........s.n(.... 06008020: 4c696e75 782d322e 362e3135 00000000 Linux-2.6.15.... 06008030: 00000000 00000000 00000000 00000000 ................ 06008040: e1a00000 e1a00000 e1a00000 e1a00000 ................ 06008050: e1a00000 e1a00000 e1a00000 e1a00000 ................ 06008060: ea000002 016f2818 00000000 000a01a8 .....o(......... 06008070: e1a07001 e3a08000 e10f2000 e3120003 ..p....... ..... 06008080: 1a000001 e3a00017 ef123456 e10f2000 ..........4V.. . 06008090: e38220c0 e121f002 ee110f10 e3800080 .. ..!.......... 060080a0: ee010f10 00000000 00000000 00000000 ................ 060080b0: 00000000 00000000 00000000 00000000 ................ 060080c0: e28f00c8 e890307e e0500001 0a00000a ......0~.P...... 060080d0: e0855000 e0866000 e08cc000 e0822000 ..P...`....... . 060080e0: e0833000 e08dd000 e5961000 e0811000 ..0............. 060080f0: e4861004 e156000c 3afffffa e3a00000 .....V..:....... ================================================== If I try to boot from 06008000, I got following: BRCM5001 # bootm 06008000 ## Booting image at 06008000 ... Image Name: Linux-2.6.15 Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 655784 Bytes = 640.4 kB

Load Address: 06008000 Entry Point: 06008000 Verifying Checksum ... OK XIP Kernel Image ... OK

Starting kernel ...

undefined instruction pc : [<06008004>] lr : [<06f8c324>]

sp : 06f3fb58 ip : 00000001 fp : 00000002

r10: 00000002 r9 : 06f3fcf4 r8 : 06f3ffdc

r7 : 06f9082c r6 : 06f8d744 r5 : 06f9082c r4 : 00000000

r3 : 06008000 r2 : 00000100 r1 : 000001c4 r0 : 00000000

Flags: nZCv IRQs off FIQs off Mode SVC_32as for 'help'

auto Resetting CPU ... ================================================== If I try to jump the header, I got following: BRCM5001 # go 06008040 ## Starting application at 0x06008040 ... Uncompressing Linux............................................. done, booting t he kernel.

Thanks for any advice.

Regards. Xuezhang.