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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi Stu,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I realize you are trying to get your own
ram disk to work, but if you want to get a baseline you can use one we have on
our wiki site, at <a href="http://xilinx.wikidot.com/open-source-linux">http://xilinx.wikidot.com/open-source-linux</a>,
under Files To Download. This is the same ram disk that is included in the ELDK.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>This is the ram disk that I use to test
the ML507 design in our Git tree. I also use NFS a lot for testing.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Looks like you’re close with yours,
but I’m certainly no expert in that area as I typically have something
that works and don’t change it.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Good luck,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>John<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> linuxppc-embedded-bounces+john.linn=xilinx.com@ozlabs.org
[mailto:linuxppc-embedded-bounces+john.linn=xilinx.com@ozlabs.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Stu Bershtein<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, August 12, 2008
5:28 PM<br>
<b><span style='font-weight:bold'>To:</span></b> linuxppc-embedded@ozlabs.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> ml507 initrd problem</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>I have
been trying to boot linux on an ml507 board for a few days now. I am
using xilinx’s linux-2.6-xlnx.git kernel. The rootfs is home
rolled. I have had experience with NFS mounted root filesystems (not an
option here), cramfs, and romfs but have never tried running root out of a
ramdisk. Because of that I am quite sure I have dorked this up. Any
help will be appreciated! I have added printk’s in the kernel at
do_sys_open to get an idea what is going on. Here is a snip of the boot
output:<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>.<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>Kernel
command line: console=ttyS0,9600 ip=on init=/linuxrc root=/dev/ram rw ram
disk_size=9000<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>.<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>Serial:
8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
83e00000.serial: ttyS0 at MMIO 0x83e00003 (irq = 16) is a 16550A<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>.<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>eth0:
XLlTemac: Send Threshold = 0, Receive Threshold = 0<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>eth0:
XLlTemac: Send Wait bound = 0, Receive Wait bound = 0<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>IP-Config:
Incomplete network configuration information.<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>open
/dev/ram<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>fd 0<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>open
/initrd.image<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>fd 1<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>RAMDISK:
Compressed image found at block 0<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>VFS:
Mounted root (ext2 filesystem).<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>Freeing
unused kernel memory: 144k init<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>open
/dev/console<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>fd 0<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>code
10000000 - 1019854c, data 10195000 - 1019854c, stack bf85df00<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>open
/dev/null<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>fd 3<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>open
/etc/inittab<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>fd 3<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>And it
gets very quiet at that point. The kernel is still running in
ppc44x_idle. Does this suggest anything to anyone? I’ll be
more than happy to send or describe any config files to any one who might take
pity.<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>Thanks,<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'>Stu<o:p></o:p></span></font></b></p>
<p class=MsoNormal><b><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue;font-weight:bold'><o:p> </o:p></span></font></b></p>
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