Re: AW: AW: AW: [microblaze-uclinux] Xmdstub connect on serial port

[John Williams <jwilliams@itee.uq.edu.au>]

Schunke Jan-Hendrik wrote:

> I just got the kernel down in the flash and the bootloader.c with your bitfile works.

excellent news

> Two things:
> 1) On the web you still have a link to the mbvanilla.c under bootloader but in the mbvanilla_ddr project there is a bootloader.c that seems to be more recent. It looks like the mbvanilla.c does not work. It hangs. Bootloader.c works fine. 

Ah OK thanks for that.  That old bootloader (mbvanilla.c) is for pre DDR 
targets.  So it's probably copying the kernel into SRAM at 0xFE000000, 
but the kernel is linked to execute from 0x80000000 (where the DDR lives).

I'll straighten that out now.

> 2) From comparing my reports to yours you have used
> 
> Release 5.2.02i - xst F-30a
> 
> And my version is 
> 
> Release 5.2.03i - xst F.31 

Yes that's right, I haven't put the latest ISE service pack on yet. 
However, I've personally witnessed someone build mbvanilla_ddr with 
ISE5.2.03i and download it to the board, and bring up the kernel etc. 
So it *can* be done!

> (I really have to get a running linux system to make my own kernel using your toolchain.)

It doesn't need to be powerful, just any old box that can run Redhat 7.0 
would be fine.  Don't need X either (until ISE 6.1 / EDK6.1 go native 
linux later this year - can't wait!)

Yesterday I added another page describing my development environment 
setup - you can access it via the Documentation page on the web site.

> 
> I let you know when I find other major differences.

Would a "diff -u" produce meaningful output?  My guess is it would 
probably make a reasonable attempt - might be worth a try.

Also did you get loopback working with the characters you typed?  I'm 
pretty sure disabling flow control got it going for me - that was a 
while ago now there might have been something else.

Thanks for checking it out, I'm sure we'll work it out soon.

Cheers,

John

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