[U-Boot] trying to bring linux-2.6.32.3 from RAM?

[Marek Vasut]

Dne St 28. dubna 2010 20:50:35 ogara napsal(a):
> Hi All,
> I am trying to bring linux from RAM. I have compiled the kernel and created
> uImage. I bring the image over tftp into the memory and then execute bootm
> memaddress. Unfortunately here is the output from my command line:
> 
>  tftp 0x8000 ipaddress:uImage
> Using egiga0 device
> TFTP from server ipaddress; our IP address is ipaddress; sending through
> gateway ipaddress
> Filename 'uImage'.
> Load address: 0x8000
> Loading: #################################################################
>          #################################################################
>          #################################################################
>          ###################
> done
> Bytes transferred = 3132020 (2fca74 hex)
> bootm 0x8000
> ## Booting kernel from Legacy Image at 00008000 ...
>    Image Name:   Linux-2.6.32.3
>    Created:      2010-04-28  18:44:34 UTC
>    Image Type:   ARM Linux Kernel Image (uncompressed)
>    Data Size:    3131956 Bytes =  3 MB
>    Load Address: 00008000
>    Entry Point:  00008000
>    Verifying Checksum ... OK
>    XIP Kernel Image ... OK
> OK
> 
> Starting kernel ...
> 
> undefined instruction
> pc : [<00008008>]          lr : [<00647d1c>]
> sp : 005ffce8  ip : 000008e0     fp : 000006fc
> r10: 00724db0  r9 : 005fff90     r8 : 005fffcc
> r7 : 00000002  r6 : 0072372d     r5 : 00000154  r4 : 00000000
> r3 : 00008000  r2 : 00000100     r1 : 000006fc  r0 : 0001c200
> Flags: nZCv  IRQs off  FIQs off  Mode SVC_32
> Resetting CPU ...
> 
> Now, the image is good for sure because I do not have issues bringing this
> image from the hard drive. Do I need anything else (ftd or ramdisc) to boot
> from RAM or the procedure presented is correct?
> my bootargs are:
> bootargs=console ttyS0,115200 root /dev/ram rw
> 
> Thank you for your help,
> Ogi

Hi, the image is probably corrupted ? Also, why do you load it to 0x8000 ? It's 
relocated anyway, but this way it has to be relocated twice)