Hello -
Per a previous suggestion from this list, I rsynced the linuxppc-2.4
kernel sources from MontaVista and modified the kernel to run on my custom
ppc405/VirtexII Pro based system with U-Boot as the bootloader.
When I try to use the SystemACE device as the root filesystem, the kernel
crashes with a sig 11. Looking at the 'oops' output it appears the
SystemACE driver may be to blame. The crash is random - sometimes I get
all the way to login as root and then things crash on a file copy or a
file read.
Before I start digging deeper, is anyone running a VirtexIIPro based
system with the root filesystem in the CF card attached to a SystemACE?
I'm wondering if I really have the best kernel and SystemACE driver.
BTW, I'm developing the hardware design using Xilinx EDK 7.02i.
Thanks,
Keith
Hi Keith,
I sent you a private email but for other interested people:
Downloading the latest linuxppc-2.4 kernel I could boot from and access
System ACE CF without problems on a ML403 (Virtex-4, 4VFX12) and a ML310
(Virtex-II Pro, 2VP30) using EDK 7.1.2. In both cases I started with
config_xilinx_ml300.
- Peter
Keith J Outwater wrote:
Hello -
Per a previous suggestion from this list, I rsynced the linuxppc-2.4
kernel sources from MontaVista and modified the kernel to run on my custom
ppc405/VirtexII Pro based system with U-Boot as the bootloader.
When I try to use the SystemACE device as the root filesystem, the kernel
crashes with a sig 11. Looking at the 'oops' output it appears the
SystemACE driver may be to blame. The crash is random - sometimes I get
all the way to login as root and then things crash on a file copy or a
file read.
Before I start digging deeper, is anyone running a VirtexIIPro based
system with the root filesystem in the CF card attached to a SystemACE?
I'm wondering if I really have the best kernel and SystemACE driver.
BTW, I'm developing the hardware design using Xilinx EDK 7.02i.
Thanks,
Keith
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
Keith,
Some suggestions, before you verify your hw board/FPGA works fine with
SYSACE,
* don't use sysace as root fs.
* use a ram fs as root fs.
* Next, load sysace driver a loadable driver module. It works, I tried it.
* check mount read only and see if it works.
* Next, mount it writable.
We have some issues with sysace driver initially, everything works out fine
later.
There were small errors in our HW layout.
I had to hack the sysace driver left and right to id the problem. But at the
end, after I fixed the layout problem from the fpga's ucf file, the original
driver
run perfectly without any modification.
In my experiences, the ppc linux distribution and its linux sysace driver
are good
if everything is setup correctly.
One minor issues: The sysace driver's write performance sucks. I have to
explain
to others why the upgrade 10 MBytes files with usb flash writer takes tens
of
seconds. When we do it from linux (nfs or ftp), it tooks minutes to sync.
Peter, maybe you can push the xilinx a bit on sysace write performance? :-)
-Tony
On 8/29/05, Peter Ryser [off-list ref] wrote:
Hi Keith,
I sent you a private email but for other interested people:
Downloading the latest linuxppc-2.4 kernel I could boot from and access
System ACE CF without problems on a ML403 (Virtex-4, 4VFX12) and a ML310
(Virtex-II Pro, 2VP30) using EDK 7.1.2. In both cases I started with
config_xilinx_ml300.
- Peter
Keith J Outwater wrote:
quoted
Hello -
Per a previous suggestion from this list, I rsynced the linuxppc-2.4
kernel sources from MontaVista and modified the kernel to run on my
custom
quoted
ppc405/VirtexII Pro based system with U-Boot as the bootloader.
When I try to use the SystemACE device as the root filesystem, the kernel
crashes with a sig 11. Looking at the 'oops' output it appears the
SystemACE driver may be to blame. The crash is random - sometimes I get
all the way to login as root and then things crash on a file copy or a
file read.
Before I start digging deeper, is anyone running a VirtexIIPro based
system with the root filesystem in the CF card attached to a SystemACE?
I'm wondering if I really have the best kernel and SystemACE driver.
BTW, I'm developing the hardware design using Xilinx EDK 7.02i.
Thanks,
Keith
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
--
-Tony
Having fun with FPGA HW + ppc + Linux
Some time ago we did some tests with bonnie++ on Linux running on the
PPC405 in a Virtex-II Pro FPGA. You can expect the following performance:
Read peak: 629 KB/s
Write peak: 299 KB/s
Not considering network overhead, a 10MB file should take less than a
minute to update.
- Peter
Tony Lee wrote:
Keith,
Some suggestions, before you verify your hw board/FPGA works fine with
SYSACE,
* don't use sysace as root fs.
* use a ram fs as root fs.
* Next, load sysace driver a loadable driver module. It works, I
tried it.
* check mount read only and see if it works.
* Next, mount it writable.
We have some issues with sysace driver initially, everything works out
fine later.
There were small errors in our HW layout.
I had to hack the sysace driver left and right to id the problem. But
at the
end, after I fixed the layout problem from the fpga's ucf file, the
original driver
run perfectly without any modification.
In my experiences, the ppc linux distribution and its linux sysace
driver are good
if everything is setup correctly.
One minor issues: The sysace driver's write performance sucks. I
have to explain
to others why the upgrade 10 MBytes files with usb flash writer takes
tens of
seconds. When we do it from linux (nfs or ftp), it tooks minutes to sync.
Peter, maybe you can push the xilinx a bit on sysace write
performance? :-)
-Tony
On 8/29/05, Peter Ryser <peter.ryser@xilinx.com
<mailto:peter.ryser@xilinx.com>> wrote:
Hi Keith,
I sent you a private email but for other interested people:
Downloading the latest linuxppc-2.4 kernel I could boot from and
access
System ACE CF without problems on a ML403 (Virtex-4, 4VFX12) and a
ML310
(Virtex-II Pro, 2VP30) using EDK 7.1.2. In both cases I started with
config_xilinx_ml300.
- Peter
Keith J Outwater wrote:
>Hello -
>Per a previous suggestion from this list, I rsynced the linuxppc-2.4
>kernel sources from MontaVista and modified the kernel to run on
my custom
>ppc405/VirtexII Pro based system with U-Boot as the bootloader.
>When I try to use the SystemACE device as the root filesystem,
the kernel
>crashes with a sig 11. Looking at the 'oops' output it appears the
>SystemACE driver may be to blame. The crash is random -
sometimes I get
>all the way to login as root and then things crash on a file copy
or a
>file read.
>Before I start digging deeper, is anyone running a VirtexIIPro based
>system with the root filesystem in the CF card attached to a
SystemACE?
>I'm wondering if I really have the best kernel and SystemACE driver.
>BTW, I'm developing the hardware design using Xilinx EDK 7.02i.
>Thanks,
>Keith
>_______________________________________________
>Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org <mailto:Linuxppc-embedded@ozlabs.org>
>https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
>
>
>
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org <mailto:Linuxppc-embedded@ozlabs.org>
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
<https://ozlabs.org/mailman/listinfo/linuxppc-embedded>
--
-Tony
Having fun with FPGA HW + ppc + Linux
Peter -
That's about the throughput I saw on my system. It's pretty slow!
Tony -
I did get things working by applying a "sysace nointr" patch that had been
posted to the list some
time ago in response to comments that SystemACE interrupts were not
working as expected on
Memec boards. I did my initial development on a Memec board and had lots
of problems until
I disabled SystemACE interrupts. Some day I may actually go back and try
to figure out
what is going on, but for the time being, I can live with what I have.
Peter Ryser [off-list ref] wrote on 09/28/2005 02:32:11 AM:
Some time ago we did some tests with bonnie++ on Linux running on
the PPC405 in a Virtex-II Pro FPGA. You can expect the following
performance:
Read peak: 629 KB/s
Write peak: 299 KB/s
Not considering network overhead, a 10MB file should take less than
a minute to update.
- Peter
Tony Lee wrote:
Keith,
Some suggestions, before you verify your hw board/FPGA works fine
with SYSACE,
* don't use sysace as root fs.
* use a ram fs as root fs.
* Next, load sysace driver a loadable driver module. It works,
I tried it.
* check mount read only and see if it works.
* Next, mount it writable.
We have some issues with sysace driver initially, everything works
out fine later.
There were small errors in our HW layout.
I had to hack the sysace driver left and right to id the problem. But
at the
end, after I fixed the layout problem from the fpga's ucf file, the
original driver
run perfectly without any modification.
In my experiences, the ppc linux distribution and its linux sysace
driver are good
if everything is setup correctly.
One minor issues: The sysace driver's write performance sucks. I
have to explain
to others why the upgrade 10 MBytes files with usb flash writer takes
tens of
seconds. When we do it from linux (nfs or ftp), it tooks minutes to
sync.
Peter, maybe you can push the xilinx a bit on sysace write performance?
:-)
-Tony
On 8/29/05, Peter Ryser [off-list ref] wrote:
Hi Keith,
I sent you a private email but for other interested people:
Downloading the latest linuxppc-2.4 kernel I could boot from and access
System ACE CF without problems on a ML403 (Virtex-4, 4VFX12) and a ML310
(Virtex-II Pro, 2VP30) using EDK 7.1.2. In both cases I started with
config_xilinx_ml300.
- Peter
Keith J Outwater wrote:
quoted
Hello -
Per a previous suggestion from this list, I rsynced the linuxppc-2.4
kernel sources from MontaVista and modified the kernel to run on my
custom
quoted
ppc405/VirtexII Pro based system with U-Boot as the bootloader.
When I try to use the SystemACE device as the root filesystem, the
kernel
quoted
crashes with a sig 11. Looking at the 'oops' output it appears the
SystemACE driver may be to blame. The crash is random - sometimes I
get
quoted
all the way to login as root and then things crash on a file copy or a
file read.
Before I start digging deeper, is anyone running a VirtexIIPro based
system with the root filesystem in the CF card attached to a SystemACE?
I'm wondering if I really have the best kernel and SystemACE driver.
BTW, I'm developing the hardware design using Xilinx EDK 7.02i.
Thanks,
Keith
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
_______________________________________________
Linuxppc-embedded mailing list
Linuxppc-embedded@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
--
-Tony
Having fun with FPGA HW + ppc + Linux