I can I boot u-boot from flash on Virtex-4 based board

I can I boot u-boot from flash on Virtex-4 based board

[yunfeizhang]

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Hi all,
I am confused for a long time about on how to boot a common program on Virtex. I want to porting a 

u-boot to Xilinx VIrtex-4 ML403 Evaluation Board, but I can even boot a common program from flash.

can someone give me some advice, thanks for all your kindness!



yunfeizhang
2007-02-26

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Re: I can I boot u-boot from flash on Virtex-4 based board

[Lorenz Kolb]

On Mon, 26 Feb 2007 09:55:55 +0800
"yunfeizhang" <yunfeizhang ( a t ) sjtu.edu.cn> wrote:
> 
> Hi all,
> I am confused for a long time about on how to boot a common program on Virtex. I want to porting a 
> 
> u-boot to Xilinx VIrtex-4 ML403 Evaluation Board, but I can even boot a common program from flash.
> 
> can someone give me some advice, thanks for all your kindness!

Hi,

I already found that non trivial.

Easiest way is: write some mini-bootloader that fits into BRAM and loads u-boot from flash.

If you need some more detailed instructions and a patch created from Xilinx'u-boot tree to patch u-boot 1.20 to work with ML403 I can send you the files.

Greetings,

Lorenz Kolb

RE: I can I boot u-boot from flash on Virtex-4 based board

[Leonid]

On Monday, February 26, 2007 7:37 AM Lorenz Kolb wrote:
> Easiest way is: write some mini-bootloader that fits into BRAM and
loads=20
> u-boot from flash.

That what I've done myself. It works perfectly for my Spartan and
Virtex-4 based boards. Simplest way is to compile binary to run from RAM
always and make this BRAM based early mini-bootloader copy image from
flash to RAM and then start. Remember that start function is not in the
beginning of this binary (for PPC 405 it has offset 0x100 normally).

> If you need some more detailed instructions and a patch created from=20
> Xilinx'u-boot tree to patch u-boot 1.20 to work with ML403 I can send
you > the files.

Can I have these? Also I'd appreciate to know where to get EDK project
for ML403 whose xparameters.h matches this u-boot patch.

Thanks,

Leonid.