ml507 initrd problem

[John Linn]

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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