Hi Luc,

I am looking into SkyEye and busy in creating an extension for potentially ipaq (cheap finished hardware to play with for embedded software/ui development).

How can I debug a boot loader such as u-boot in a emulator/simulator environment ?

Good question. I have only thought for a short while about this question, but I think in such an environment, you need only small pieces of U-Boot. Of course you don't have real hardware to setup in a debugger (so I guess, but I have never used one) things like setting up a memory controller etc. will probably not work without emulating all of the hardware of a "real system" - and I guess this is simply not possible to have emulators for all hardware components.

So what you would need for such an environment would be U-Boot stripped from all the hardware inits which is probably a major surgery on the sources.

Try asking on the U-Boot mailing list (I cc'ed the list) as there are _very probably_ more competent people in this field.

Is it possible to debug u-boot in a arm-linux-gdb environment ? If I assign this to memory 0x000000 and put 'set $pc =0' should that work ? ... it didn't when I tried

It is of course possible to debug U-Boot on ARM systems - we did ports for some ARM based boards - but again putting U-Boot at address 0 is a much bigger question. What board config did you use? What address does this image think it runs from? And what address was U-Boot linked for? You have to load the U-Boot image there - but again I think the U-Boot hardware inits will cause you grief.

I searched the web but could not find any good result. Can give me some direction ?

I hope I did ;)

Cheers Detlev