[U-Boot-Users] debug u-boot with BDI2000
Hi,
After solving early problem with target reset (cable fault) I'm ready to do some real work! I order to debug u-boot startup and so on, do I have to enable/provide some additional options when compiling u-boot for my target?
I've read the Debugging section in dulg manual, but it doesn't mention anything like that - Just to make sure...
regards, hk
Hinko Kocevar wrote:
Hi,
After solving early problem with target reset (cable fault) I'm ready to do some real work! I order to debug u-boot startup and so on, do I have to enable/provide some additional options when compiling u-boot for my target?
I've read the Debugging section in dulg manual, but it doesn't mention anything like that - Just to make sure...
regards, hk
Just the standard ones for debugging: -g for symbolic support.
You may want to use -O0 to turn off optimization. The linux kernel won't link when compiled with -O0 because the expected inlining doesn't happen (symptom: linking gives missing symbols) -- I don't recall if u-boot has that limitation too.
gvb
On Feb 2, 2005, at 12:36 PM, Jerry Van Baren wrote:
Just the standard ones for debugging: -g for symbolic support.
You also have to be careful of processor initialization code that initializes debug control registers. Proper processor set up requires you do this, but of course the BDI2000 is also trying to use these registers to assist with the debug process. You may have to disable this debug register initialization in the code, depending upon the processor, or find some other way of working around this.
-- Dan
Dan Malek wrote:
You also have to be careful of processor initialization code that initializes debug control registers. Proper processor set up requires you do this, but of course the BDI2000 is also trying to use these registers to assist with the debug process. You may have to disable this debug register initialization in the code, depending upon the processor, or find some other way of working around this.
Hmm, I'm using intel pxa255 A0 processor here. BDI2000 came with some setup files for this processor. I'll check out that stuff, thanks for the tip.
regards, hk
In message 42010F95.4070709@smiths-aerospace.com you wrote:
Just the standard ones for debugging: -g for symbolic support.
This is default for U-Boot, so no change needed.
You may want to use -O0 to turn off optimization. The linux kernel
We never do this. You get used to see what the optimizer is doing - and actually this my be very important to know. We've been hunting a couple of problems (like missing "volatile" atributes) when switching from older versions of GCC to GCC-3.3 - turning off -O0 ould have made this impossible.
Best regards,
Wolfgang Denk
participants (4)
-
Dan Malek -
Hinko Kocevar -
Jerry Van Baren -
Wolfgang Denk