Thread (12 messages) 12 messages, 4 authors, 2008-08-31

RE: Linux issues on Xilinx XUPV2P board

From: Alan Casey <hidden>
Date: 2008-08-15 14:36:25 

Hi John,

  Im not having any problems using GIT. I can download
  2.6.26 using git no problem - i think wangyanlong
  would like to use 2.6.24 or 2.6.26 and he has problems
  downloading it using git - hence i replied to him that
  he may find more info about how to download the current
  or previous version on git.xilinx.com. I think you misread
  my email.

  The Xilinx Framebuffer driver works fine in Linux 2.6.24
  but there appears to be a problem with one of the Linux-2.6.26
  versions which i posted about a few weeks/months ago.
 
  Alan.

-- Original Message --
Subject: RE: Linux issues on Xilinx XUPV2P board
Date: Fri, 15 Aug 2008 08:30:25 -0600
From: John Linn <redacted>
To: <redacted>,
"wangyanlong" [off-list ref],
[off-list ref]


Hi Alan,

I'm assuming you must not have Git installed from the question,
otherwise you would be using git clone as the site shows.

On the http://git.xilinx.com, it says the following, 

Users without Git installed may create a tar file by using the snapshot
feature. Select the tree view of the repository (far right side) on this=
page, then select snapshot (near the top) and a gziped tar file will be
created and downloaded. 

Is this what you're looking for?

-- John

quoted
-----Original Message-----
From: 
linuxppc-embedded-bounces+john.linn=3Dxilinx.com@ozlabs.org 
[mailto:linuxppc-embedded-bounces+john.linn=3Dxilinx.com@ozlabs.
org] On Behalf Of Alan Casey
Sent: Friday, August 15, 2008 6:34 AM
To: wangyanlong; linuxppc-embedded@ozlabs.org
Subject: Re: Linux issues on Xilinx XUPV2P board

Hi,

  I used version 2.6.24. Current version is 2.6.26+ but im
  not sure how to download previous versions from the git
  tree, there should be some info at http://git.xilinx.com
  about how to do this.

  Regards,
  Alan.

quoted
-- Original Message --
Date: Fri, 15 Aug 2008 04:35:01 -0700 (PDT)
From: wangyanlong <redacted>
To: linuxppc-embedded@ozlabs.org
Subject: Re: Linux issues on Xilinx XUPV2P board



Hi Alan 
 I dow load the kernel from "
http://git.xilinx.com/cgi-bin/gitweb.cgi?p=3Dlinux-2.6-xlnx.git
;a=3Dsummary
"
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Merge ../../linux-2.6 into 2.6.26-merge  master  commit | 
commitdiff | tree
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| snapshot
 
this version ,but it not work well,which version you downloaded?

Many thanks
yanlong


Alan Casey wrote:
quoted
Hi,

  Yes i had a problem with using one of the Linux 2.6.26
  kernel versions on the XUPV2P board where the VGA
  display has not driven correctly, not sure why.
  The Linux 2.6.24 kernel from git.xilinx.com works fine.

  Regards,
  Alan.
  

quoted
-- Original Message --
Date: Fri, 15 Aug 2008 01:43:37 -0700 (PDT)
From: wangyanlong <redacted>
To: linuxppc-embedded@ozlabs.org
Subject: Re: Linux issues on Xilinx XUPV2P board



I meet the problem as yours . And  my vga's display is not 
clear , have
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you
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meet this?

Alan Casey wrote:
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Hi,

  I have tried running the Linux 2.6.24 and Linux 2.6.26 
kernels from
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  git.xilinx.com on the Xilinx XUPV2P board but have run 
into a few
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problems.

  Cross-compiler i use to compile applications was built using
Crosstools
and
  based on gcc 3.3.4. I use Xilinx EDK 7.1 for 
integrating hardware
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peripherals
  onto the board.

  The problems i've seen are:

  (i) gettimeofday software function returns time of 0 
all the time.
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  (ii) The Linux 2.6.24 kernel's Xilinx Framebuffer 
driver and/or the
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Xilinx

       PLB TFT Controller IP block 
(plb_tft_cntlr_ref_v1_00_d) does
not
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appear

       to centre the display on a VGA screen properly(vertically
offset).

  (iii) 64-bit write/read access to peripheral 
integrated onto the
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Xilinx

        Virtex-II Pro FPGA either causes a system crash 
or only lower
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part
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        of 32-bit data to be written (i.e. lower part of 
64-bit data
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appears
        to be mirrored on the upper and lower 32-bits of 
the system
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bus).
        However, 32-bit write/read access to the 
peripheral passes as
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well
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        as 64-bit write/read access to the SDRAM memory 
address space.
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        Peripheral interface has been verified to be IBM 
PLB compliant
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        via IBM bus functional model simulations. 

   (iv) The Linux 2.6.26 Xilinx Framebuffer driver on 
the Xilinx XUPV2P
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board

        does not appear to be working - nothing displayed to
screen/console

        not switching to framebuffer device on bootup. 

   Just wondering if anybody has seen these issues 
before and know how
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to
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   resolve them?

   Any info. appreciated,
   Regards,
   Alan.

  


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