[microblaze-uclinux] problem with u-boot aborting

["Keith S. Morgan" <morgank@xxxxxxxx>]

Hello all.  I am still trying to get my board running uClinux and am now 
stuck at getting u-boot to load properly.  After FS-BOOT starts, I 
download u-boot.srec over the serial port.  It claims to successfully 
download the image and boot the image, but after it prints a message 
about the SDRAM it aborts and reboots FS-BOOT.  Here is the output from 
my terminal...

=================================================
FS-BOOT First Stage Bootloader (c) 2006 PetaLogix
=================================================
FS-BOOT: System initialisation completed.
FS-BOOT: No existing image in FLASH.  Starting image download.
FS-BOOT: Waiting for SREC image....
FS-BOOT: Image download successful.
FS-BOOT: Press 'n' to boot old image.
FS-BOOT: Use new image.
FS-BOOT: Booting image...
SDRAM :
       Enabling caches :
               Icache:OK
               Dcache:OK
       U-Boot Start:0x9ffc0000
       Malloc Start:0x9ff80000
       Board Info Start:0x9ff7ffd0
=================================================
FS-BOOT First Stage Bootloader (c) 2006 PetaLogix
=================================================
FS-BOOT: System initialisation completed.
FS-BOOT: No existing image in FLASH.  Starting image download.
FS-BOOT: Waiting for SREC image....


From looking at 
http://developer.petalogix.com/wiki/UserGuide/Bootloaders/UBoot/UsingUBoot/UBBoot 
it seems like the next step for u-boot should have been to print some 
information about the flash, then some information about ethernet and 
then finally print the u-boot prompt.  My particular setup does not have 
flash so I am wondering if that is what is causing the problem.  (I am 
using a PicoComputing E15FX60.  It has a Virtex-4 FX60, 256MB DDR2, 
Gigabit Ethernet (Marvell chip), and RS-232.)  There is a possibility of 
adding flash, but for now I would prefer to just use the SDRAM and load 
u-boot and linux from the host.

Note that the U-Boot start address 0x9ffc0000 is in the SDRAM address 
space and is exactly where I was expecting it to try to put u-boot.

Does anybody have any ideas? I would appreciate any help.  Thanks!


--
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Keith Shearl Morgan                                    Mail Stop D440
morgank@xxxxxxxx                            ISR-3, Space Data Systems
505-665-0249 Office                    Los Alamos National Laboratory
505-665-4197 FAX                                Los Alamos, NM  87545
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