emulate u-boot in gdb
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Hi Luc,
Quoted 6 lines
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.
Quoted 3 lines
Is it possible to debug u-boot in a arm-linux-gdb environment ? If I assign this to memory
0x000000and 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.
Quoted 2 lines
I searched the web but could not find any good result. Can give me some direction ?
I hope I did ;)
Cheers
Detlev
Signature · 3 lines
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