RE: [microblaze-uclinux] DDR + XUP problem

[Paul Hartke <phartke@xxxxxxxxxxxx>]

Use xmd to download the code to the DDR on the board.  The xmd.ini script in
the binaries directory of the XUPV2P microblaze uclinux project does this.

Paul

Quoting leo han <wenwenti@xxxxxxxxxxx>:
>
> Since the code is on DDR memory, I don't know how to initialize the DDR
> memory.
> If that memory is not initialized, it can not work. Right? I guess I
> missed
> some step.
>
>
>
> >From: Paul Hartke <phartke@xxxxxxxxxxxx>
> >Reply-To: microblaze-uclinux@xxxxxxxxxxxxxx
> >To: microblaze-uclinux@xxxxxxxxxxxxxx, leo han <wenwenti@xxxxxxxxxxx>
> >CC: microblaze-uclinux@xxxxxxxxxxxxxx
> >Subject: RE: [microblaze-uclinux] DDR + XUP problem
> >Date: Wed,  8 Feb 2006 23:48:19 -0800
> >
> >Are you using EDK 7.1 service pack 2 and the latest revision of the
> XUPV2P
> >EDK support files available at http://www.xilinx.com/univ/xupv2p.html ?
> >
> >Paul
> >
> >Quoting leo han <wenwenti@xxxxxxxxxxx>:
> > >
> > > I am using the XUP board (virtexIIpro) with EDK 7.1. Actually, I can
> not
> > > pass the memory_test generated by the BSB.  I heard that there is a
> bug
> > > in
> > > the opb_ddr. But I am not sure whether this is related.
> > > Thanks.
> > >
> > >
> > >
> > >
> > > >From: "Steve Spano" <steve@xxxxxxxxxxxxx>
> > > >Reply-To: microblaze-uclinux@xxxxxxxxxxxxxx
> > > >To: <microblaze-uclinux@xxxxxxxxxxxxxx>
> > > >Subject: RE: [microblaze-uclinux] DDR + XUP problem
> > > >Date: Wed, 8 Feb 2006 22:13:53 -0500
> > > >
> > > >Wen,
> > > >
> > > >What board are you using?
> > > >
> > > >Are you sure you can pass the low-level read/write pattern test
> (should
> > > >be automatically generated by EDK) on the DDR?
> > > >
> > > >Sounds like timing is not quite right on DDR bus. The linux kernel
> my
> > > >firm is using is now around 4MEG and runs from DDR (only when the
> >timing
> > > >is right)
> > > >
> > > >
> > > >
> > > >Steve Spano
> > > >President, Finger Lakes Engineering
> > > >(V) 607-277-1614 x223
> > > >(F) 800-835-7164
> > > >(C) 607-342-1150
> > > >steve@xxxxxxxxxxxxx
> > > >www.fl-eng.com
> > > >
> > > >-----Original Message-----
> > > >From: owner-microblaze-uclinux@xxxxxxxxxxxxxx
> > > >[mailto:owner-microblaze-uclinux@xxxxxxxxxxxxxx] On Behalf Of leo
> han
> > > >Sent: Wednesday, February 08, 2006 8:12 PM
> > > >To: microblaze-uclinux@xxxxxxxxxxxxxx
> > > >Subject: [microblaze-uclinux] DDR + XUP problem
> > > >
> > > >I have a big C program (800KB) which must use DDR memory. I tried to
> >use
> > > >a
> > > >256M ddr memory  with PPC and map all the sections to the DDR memory
> > > >space
> > > >except the boot and boot0.  However, the program can not start from
> >DDR.
> > > >The
> > > >problem occurs for microblaze also.
> > > >It almost kills me:(
> > > >Could anyone have any solution? Thanks.
> > > >

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