[microblaze-uclinux] problems booting kernel

[John Carter <mrjohndcarter@xxxxxxxxx>]

Hi everyone, I'm new to the list, and have been working on this
problem for the past week or so.

I've scanned thru the lists and documentation, and haven't had much
luck.  I have a sneaky suspicion it is a real forehead slapper, but
seem to missing something.

Basically, I have the MB on the board, and when I download the kernel,
nothing happens.

Notes:
I've followed thru the documention on Dr. William's site, and have
built everything thus far.

Due to configuration issues in my lab, I am using the Windows EDK
(6.1) to download images.  I built everything under linux, but don't
have rights to the serial ports.

I have the V2MB1000 Board.  I believe I have rev3 (it has green LEDs),
and user's guide says "Ver 3.0".

I am basing most of my process on the online William's documentation,
the demo, and a tiny bit from EDK provided documentation.

All the jumpers are in their default position.

The communications board is attached.

I am using a parallel JTAG to download the mb to the board, and a
serial off the primary 232 for my terminal.

--

1.  Used impact tool to download mbvanilla (download.bit) to the board.
I selected the xc18v04_vq44.bsd file for the prom chip, and
download.bit (from mb_vanilla) for the xc2v1000.

Hyperterminal comes alive and shows the jboot menu:

J-Boot Menu
-----------

1.    Execute Flash image
2.    Execute RAM image
3.    Erase Flash
4.    Write image into Flash
5.    Set kernel cmdline

Make your choice>

At this point I open up xmd:

H:\unpublic\uclinux\uClinux-dist\images>xmd
Xilinx Microprocessor Debug (XMD) Engine
Xilinx EDK 6.2.1 Build EDK_Gm.12.3
Copyright (c) 1995-2002 Xilinx, Inc.  All rights reserved.
XMD% xload mhs H:\\unpublic\\uclinux\\mbvanilla_net_6_20_a\\system.mhs
Processors in System (\\bud.cis.uoguelph.ca\u1\grad\jcarter\unpublic\uclinux\mbv
anilla_net_6_20_a\system.mhs)::
       Microblaze-MDM(1) : microblaze_0
XMD% mbc mdm

JTAG chain configuration
--------------------------------------------------
Device   ID Code        IR Length    Part Name
1       05026093           8        XC18V04
2       01028093           6        XC2V1000
Assuming, Device No: 2 contains the MicroBlaze system
Connected to the JTAG MicroBlaze Debug Module (MDM)
No of processors = 1

MicroBlaze Processor 1 Configuration :
-------------------------------------
Version............................2.00.a
No of PC Breakpoints...............4
No of Read Addr/Data Watchpoints...1
No of Write Addr/Data Watchpoints..1
Instruction Cache Support..........on
Data Cache Support.................on
MB-FSL-MDM Connected...............Yes
JTAG MDM Connected to Mircoblaze 1
Connected to MicroBlaze "mdm" target. id = 0
Starting GDB server for "mdm" target (id = 0) at TCP port no 1234
XMD%

I can start the processor back up, and it is still running jboot just fine..

Next I download image.bin which I built myself (I have also replacing
it with the demo as well, and it also does nothing for me).

dow -data image.bin 0x80000000

it takes about 90 seconds, and comes back to a prompt.

Dumping the memory before and after the download shows that nothing has changed.

If I press the program button, all the memory turns to: 3FFFFFFF

I tried changing 0x80000000 by hand, and it will not let me.  
I have the 4 meg version (xc18v04) which I thought was the largest.

I tried changing lower memory addresses, and I can change and read them fine.

I also tried downloading the image (and the demo) to 0x00000000 and it
will change
the contents, but when I set the program counter (rwr 32 0x00000000)
and type con
it does nothing.

It may be something really obvious, and just a lack of knowledge of
how to use the program button.  (presently I'm not using it for
anything).

Any help would be great appreciated!

thanks,

jc

-- 
/* John Carter, BCS
* MSc Student (CIS) - University of Guelph
* email=mrjohndcarter@gmail.com
* site=http://www.jcarter.ca */
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