At 05:51 PM 2/29/2008, you wrote:

On Fri, 29 Feb 2008 17:31:10 -0500
Steve Heflin [off-list ref] wrote:

quoted

At 04:35 PM 2/29/2008, Josh Boyer wrote:

quoted

On Fri, 29 Feb 2008 16:34:09 -0500
Steve Heflin [off-list ref] wrote:

quoted

I attempted to enable the kernel debugger on my Sequoia board, and I
get build errors:
  /linux-2.6.25-rc3/arch/powerpc/kernel/setup_32.c:254: undefined
reference to `set_debug_traps'
  /linux-2.6.25-rc3/arch/powerpc/kernel/setup_32.c:259: undefined
reference to `breakpoint'

Josh: I assume you have used the kernel debugger with your 44x
boards, how did you build it?

Why would you assume that?  I've never used kgdb on arch/powerpc
kernels, nor have I ever tried to build it.

I assumed that because I've always needed a debugger when
implementing kernel level components. Since you've implemented kernel
level support for several 44x processors, I just assumed that you
needed kdbg at some point. So you're saying that your additions

Nope.  I did the poor man's method of manually poking characters out of
the serial port.

quoted

worked right out of the gate and you never needed a 

debugger?  You're my hero!

I largely stood on the shoulders of those that came before me.  Porting
has become trivial lately, mostly due to the collective work lots of
people have put in.

That all being said, I'm not opposed to having kgdb work on 4xx.  I
just have never personally looked at it yet.  Patches welcome :).

josh

poor man's debugging works fine if a serial port is available, but my 
Sequoia platform doesn't get that far!  I use u-boot to download and 
boot my image, and I don't get any serial output after the boot completes:

=> bootm 0x500000
## Booting image at 00500000 ...
    Image Name:   Kernel and Ramdisk
    Created:      2008-03-01   0:09:57 UTC
    Image Type:   PowerPC Linux Multi-File Image (gzip compressed)
    Data Size:    2430248 Bytes =  2.3 MB
    Load Address: 00000000
    Entry Point:  00000000
    Contents:
    Image 0:  1471523 Bytes =  1.4 MB
    Image 1:   958712 Bytes = 936.2 kB
    Verifying Checksum ... OK
    Uncompressing Multi-File Image ... OK
    Loading Ramdisk to 07e42000, end 07f2c0f8 ... OK
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console port is now dead.
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