u-boot & uImage on M5282LITE

I'm starting up development for a project based on the 5282 CPU, so  
I'm starting with the M5282LITE board; I have u-boot built for it,  
loading out of the on-chip flash so I can flop between u-boot and  
dBUG with the EXT_BOOT jumper.

I'm building a stock 2.6.19_uc1 kernel.

What I'm trying to do is NFS mount a root filesystem so I can do  
development easily, since our final board will have far more flash  
than the LITE board. To this end, I'd like to pass arguments to the  
kernel.

Okay, so I can boot uClinux by loading the linux.bin file and go'ing  
to it, but then I get the default command line args. No good for NFS  
booting unless I compile them in; I like u-boot.

So I tried
mkimage -A m68k -O linux -T kernel -d linux.bin.gz -a 0x10000 -e  
0x10000 -C gzip image.bin

Then I "bootp" to get the file loaded, and "bootm" to start booting.  
U-boot verifies the checksum, then uncompresses the kernel image. I  
get the following error:

-> bootm
## Booting image at 00010000 ...
    Image Name:
    Image Type:   M68K Linux Kernel Image (gzip compressed)
    Data Size:    650983 Bytes = 635.7 kB
    Load Address: 00010000
    Entry Point:  00010000
    Verifying Checksum ... OK
    Uncompressing Kernel Image ... Error: inflate() returned -3
GUNZIP ERROR - must RESET board to recover

Okay, let's try it without compression. For kicks, we turn on  
debugging in u-boot:

mkimage -A m68k -O linux -T kernel -d linux.bin -a 0x10000 -e 0x10000  
-C none image.bin

-> bootm
## Booting image at 00010000 ...
    Image Name:
    Image Type:   M68K Linux Kernel Image (uncompressed)
    Data Size:    1323008 Bytes =  1.3 MB
    Load Address: 00010000
    Entry Point:  00010000
    Verifying Checksum ... OK
    XIP Kernel Image ... OK
## Current stack ends at 0x00F8EAF4 => set upper limit to 0x00F8E2F0
## cmdline at 0x00F8E1F0 ... 0x00F8E20E
memstart    = 0x00000000
memsize     = 0x01000000
flashstart  = 0xFFE00000
flashsize   = 0x00200000
flashoffset = 0x00000000
sramstart   = 0x20000000
sramsize    = 0x00010000
mbar        = 0x40000000
busfreq     =     64 MHz
ethaddr     = 00:E0:0C:BC:E5:60
ip_addr     = 10.18.12.1
baudrate    = 19200 bps
No initrd
## Transferring control to Linux (at address 00010000) ...


*** Unexpected exception ***
Vector Number: 4  Format: 04  Fault Status: 0

PC: 00010006    SR: 00002704    SP: 00f8ea90
D0: 00000000    D1: 0000000a    D2: 00000000    D3: 00f8e1b0
D4: 00f8e1f0    D5: 00f8e2f0    D6: 00f8eee0    D7: 00f9ef90
A0: 00010000    A1: 00fec884    A2: 00fff6c6    A3: 0001003c
A4: 00000000    A5: 00ff75e8    A6: 00f8eb28

*** Please Reset Board! ***

Dang.

What am I getting wrong here? Am I approaching this problem the wrong  
way? This has got to be simple and I'm missing something basic......

-
allon