Any low cost solution for flash programming on PowerPC 405GP JTAG?

Howdy,

    I have a PowerPC 405GP Walnut eval board. Recently, by accident,
the flash which stores U-Boot is corrupted. Therefore the board cannot
boot now. I want to use the JTAG port on the board to rewrite the
flash with new U-Boot. I found many products for this propers, but
they are too expensive for me. It costs $1000-$3000... >_<  Eg:
BDI2000, Silicon Probe... What I really want is simply use JTAG
wiggler and a flash programmer to download uboot into flash. That's
all! Nothing else. It would be very pleased if anyone can tell me some
relatively low cost method to do so.
    Thank you very much.

---
ShenLei

LittleSweetMe...@gmail.com wrote:
>.... I found many products for this propers, but
> they are too expensive for me. It costs $1000-$3000... >_<  Eg:
> BDI2000, Silicon Probe... What I really want is simply use JTAG
> wiggler and a flash programmer to download uboot into flash.

What I do (although I have not done it on the 405, but the
technique is general) is use JTAG boundary scan - the .bsdl files
being public - to drive/read the address and data signals and
thus program the flash. But I am doing it using my DPS based
toolchain, not sure if you can get anything you can use like
this in the wintelinux world.

Dimiter

------------------------------------------------------
Dimiter Popoff               Transgalactic Instruments

http://www.tgi-sci.com
------------------------------------------------------
http://www.flickr.com/photos/didi_tgi/sets/72157600228621276/

Original message: http://groups.google.com/group/comp.arch.embedded/msg/f5e49fef51e0e83a?dmode=source

Thank you. I'm studying JTAG boundary scan... >_<

---
ShenLei

"Didi" <dp@tgi-sci.com> 
??????:f9881a04-1431-4403-872e-62a663a33ad5@b1g2000hsg.googlegroups.com...
> LittleSweetMe...@gmail.com wrote:
>>.... I found many products for this propers, but
>> they are too expensive for me. It costs $1000-$3000... >_<  Eg:
>> BDI2000, Silicon Probe... What I really want is simply use JTAG
>> wiggler and a flash programmer to download uboot into flash.
>
> What I do (although I have not done it on the 405, but the
> technique is general) is use JTAG boundary scan - the .bsdl files
> being public - to drive/read the address and data signals and
> thus program the flash. But I am doing it using my DPS based
> toolchain, not sure if you can get anything you can use like
> this in the wintelinux world.
>
> Dimiter
>
> ------------------------------------------------------
> Dimiter Popoff               Transgalactic Instruments
>
> http://www.tgi-sci.com
> ------------------------------------------------------
> http://www.flickr.com/photos/didi_tgi/sets/72157600228621276/
>
> Original message: 
> http://groups.google.com/group/comp.arch.embedded/msg/f5e49fef51e0e83a?dmode=source
>