Re: [microblaze-uclinux] problem with u-boot aborting

["Nathan Hillery" <nhillery1@xxxxxxxxx>]

Some things to check: I recall there being multiple versions/formats
for the u-boot image. Make sure you using the right one.
I'm away from work and thus going from memory, so i may be wrong (and
thinking of the Linux image instead).
(In the u-boot config, which comes after your current blocking point,
I was not able to get the scripts to work (the references to
environment variables didn't work). So I had to do the equivalent
operations by hand.

If you have the Xilinx tools, you can run in the debugger and watch
what happens, line-by-line. That helped me uncover some UART problems
I had.

Finally, check the "customizing u-boot" and "petalinux from scratch"
documents. Good luck! It'll be fun when it works;-)


On 7/25/08, Keith S. Morgan <morgank@xxxxxxxx> wrote:
> 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!
>
>
> --
> ---------------------------------------------------------------------
> 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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