Debug Kernel Crash

[Jess Balint]

Hi all. I wish to know how to debug the kernel via the serial terminal. I have use the kernel, linux 2.4.19 and 2.4.20-rc2 as trying to load on a Motorola MCP750 (PReP).  The very first compile that I did booted alright, but everyone one after that does not. It stops at when residual data found. I don't know if something in my nvram is screwing it up. Following is the output when loading the kernel. Any pointers on how to debug this would be great. Thanks.

jess

_BEGIN_

PPC1-Bug>nbo
Network Booting from: DEC21140, Controller 0, Device 0
Device Name: /pci at 80000000/pci1011,9 at e,0:0,0
Loading: zImage.prep

Client IP Address      = 10.0.0.201
Server IP Address      = 10.0.0.73
Gateway IP Address     = 10.0.0.33
Subnet IP Address Mask = 255.0.0.0
Boot File Name         = zImage.prep
Argument File Name     =

Network Boot File load in progress... To abort hit <BREAK>

Bytes Received =&757210, Bytes Loaded =&757210
Bytes/Second   =&378605, Elapsed Time =2 Second(s)

Residual-Data Located at: $01F88000

_END_

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