Re: [microblaze-uclinux] minimum memory neededd for the kernel and mblaze

[Anand Shivhare <anand.shivhare@xxxxxxxxx>]

sir,
    what do we have to do, to run the kernel from flash, I have 
NuHorizones Spartan-3 board. I have gone through some post. they say
to change the ram.ld file flash.ld and then do some changes in that.
Is there any guide that how to change this file. Then then is one more
change that is recommended and that is in early_init. what kind of
changes one has to do in that file/function. From those posts I came
to know, when compiled uClinux is already a PIC and have the
capability of XIP. is it true.

Is there any guide that gives a detailed description of exact changes
needed to be done for running uClinux from flash...

Thanks in advance....

Anand Shivhare





On 8/8/05, John Williams <jwilliams@itee.uq.edu.au> wrote:
> Steve Sanders wrote:
> > 500KB of RAM will be really tough, if not impossible.  I got it going
> > in 1MB of RAM, but even that was difficult.  Check some of my posts to
> > this group in the Nov. 2005 timeframe.  The 500KB of ROM should be OK -
> > I vaguely remember my image sizes being smaller than that.
> 
> I think the only way it can be done is to run the kernel code direct
> from flash, with only the data segment in RAM (plus userspace of
> course).  A bit of hacking could leave the romfs in flash as well.
> 
> Regards,
> 
> John
> 
> 
> 
> 
> >
> > Steve
> >
> > --- "Brockhaus, Daniel" <brockhaus.d@rheinmetall-de.com> wrote:
> >
> >
> >>
> >>
> >>Hi,
> >>
> >>I am a college student and for my diploma thesis I want to put an OS
> >>into a FPGA (virtex II pro) from Xilinx.
> >>
> >>The OS should be an open source project and the footprint has to be
> >>less then 500 Kbytes ROM and 500 Kbytes RAM
> >>
> >>Do I have a chance to get the µCLinux Kernel in my Board? Or is it
> >>impossible?
> >>
> >>Thanks Daniel
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> > ___________________________
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> 
> 
> --
> Dr John Williams, Research Fellow,
> Embedded Systems Group / Reconfigurable Computing
> School of ITEE, The University of Queensland, Brisbane, Australia
> (p) +61 7 33652185  (f) +61 7 33654999 (m) +61 403969243
> ___________________________
> microblaze-uclinux mailing list
> microblaze-uclinux@itee.uq.edu.au
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> 
>

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