ml507 initrd problem

Thu Aug 14 01:33:32 EST 2008

Morning John,

Thanks for the tip.  Running said ramdisk things certainly look lively,
I'll add a list of opens that I see at boot up at the bottom of this
email.  Looks like it's opening a shell and everything and yet I see no
serial communication from the shell, just quiet.  Am I correct to expect
the console to be the serial port (9pin DB) on the ml507 board at 9600
baud?  Also, if you could spare a desperate person a moment, could you
send me the boot command line that you use for testing with the ramdisk?
Finally, another member of this form suggested that there is a fully
build BSP (rootfs and all) available as 'linux_support.tar.gz' on the
Xilinx site.  Are you familiar with this?  I tried locating it a few
days ago to no avail.

Thanks very much for your help!

Stu

Freeing unused kernel memory: 144k init

open /dev/console

code 10000000 - 1009c134, data 1009a128 - 1009c134, stack bfdb9f00

open /lib/libcrypt.so.0

open /lib/libm.so.0

open /lib/libc.so.0

open /dev/console

open /dev/console

open /etc/TZ

open /etc/inittab

open /dev/console

open /etc/TZ

code 10000000 - 1009c134, data 1009a128 - 1009c134, stack bfd65eb0

open /lib/libcrypt.so.0

open /lib/libm.so.0

open /lib/libc.so.0

open /etc/rc.sh

code 10000000 - 1009c134, data 1009a128 - 1009c134, stack bfef2ea0

open /lib/libcrypt.so.0

open /lib/libm.so.0

open /lib/libc.so.0

open /etc/mtab

code 10000000 - 1009c134, data 1009a128 - 1009c134, stack bf9a8e90

open /lib/libcrypt.so.0

open /lib/libm.so.0

open /lib/libc.so.0

code 10000000 - 10039640, data 10039000 - 10039640, stack bfa47e70

open /lib/libm.so.0

open /lib/libcrypt.so.0

open /lib/libc.so.0

open /dev/null

open /tmp/xinetd.pid

open /etc/xinetd.conf

open /etc/xinetd.d

open /dev/console

open /etc/TZ

open /etc/xinetd.d/ftpd

open /dev/console

code 10000000 - 1009c134, data 1009a128 - 1009c134, stack bfda3ea0

open /etc/TZ

open /etc/TZ

code 10000000 - 1009c134, data 1009a128 - 1009c134, stack bf9c5ec0

open /etc/passwd

open /etc/xinetd.d/telnet

open /lib/libcrypt.so.0

open /etc/TZ

open /lib/libm.so.0

open /lib/libcrypt.so.0

open /etc/passwd

open /lib/libc.so.0

open /lib/libm.so.0

open /etc/protocols

open /bin/application

open /lib/libc.so.0

open /etc/services

code 10000000 - 1009c134, data 1009a128 - 1009c134, stack bffa9ea0

open .profile

open /etc/services

open /etc/profile

open /etc/protocols

open /etc/passwd

open /etc/services

open /lib/libcrypt.so.0

open /etc/services

open /lib/libm.so.0

open /etc/TZ

open /lib/libc.so.0

open /etc/TZ

code 10000000 - 1009c134, data 1009a128 - 1009c134, stack bfaa5eb0

open /lib/libcrypt.so.0

open /lib/libm.so.0

open /lib/libc.so.0

________________________________

From: John Linn [mailto:John.Linn at xilinx.com] 
Sent: Wednesday, August 13, 2008 7:11 AM
To: Stu Bershtein; linuxppc-embedded at ozlabs.org
Subject: RE: ml507 initrd problem

Hi Stu,

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
http://xilinx.wikidot.com/open-source-linux, under Files To Download.
This is the same ram disk that is included in the ELDK.

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.

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.

Good luck,

John

________________________________

From: linuxppc-embedded-bounces+john.linn=xilinx.com at ozlabs.org
[mailto:linuxppc-embedded-bounces+john.linn=xilinx.com at ozlabs.org] On
Behalf Of Stu Bershtein
Sent: Tuesday, August 12, 2008 5:28 PM
To: linuxppc-embedded at ozlabs.org
Subject: ml507 initrd problem

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:

.

Kernel command line: console=ttyS0,9600 ip=on init=/linuxrc
root=/dev/ram rw ram disk_size=9000

.

Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing
disabled 83e00000.serial: ttyS0 at MMIO 0x83e00003 (irq = 16) is a
16550A

.

eth0: XLlTemac: Send Threshold = 0, Receive Threshold = 0

eth0: XLlTemac: Send Wait bound = 0, Receive Wait bound = 0

IP-Config: Incomplete network configuration information.

open /dev/ram

fd 0

open /initrd.image

fd 1

RAMDISK: Compressed image found at block 0

VFS: Mounted root (ext2 filesystem).

Freeing unused kernel memory: 144k init

open /dev/console

fd 0

code 10000000 - 1019854c, data 10195000 - 1019854c, stack bf85df00

open /dev/null

fd 3

open /etc/inittab

fd 3

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.

Thanks,

Stu

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