Does anyone have a working initrd image they can share which enables
the TS-7250 to boot up to Debian from a USB drive?
I have exhausted the possibilities for creating one of my own. The TS
documentation suggests that this is possible, but I just haven't been
able to make it work.
My attempted initrd results in a kernel panic ("Kernel panic:
Attempted to kill init!"). I think its because the final invocation
of /sbin/init in the linuxrc script below won't work because there is
already a process with PID of 1, and apparently busybox requires
/sbin/init to be chroot exec'd with a PID of 1...
For the record, here's what I've tried:
- attempted to adapt instructions for booting a TS-7260 from an SD
card, as per http://www.seiner.com/mediawiki/index.php/Booting_to_sdcard
- the initrd posted on that site was too small to add the required
USB modules, so I found a TS-7300 which was large enough to accomodate
the modules, replaced its filesystem with that from the TS-7260
initrd, added modules per /usr/bin/loadUSBModules.sh and modified
linuxrc as follows:
#!/bin/sh
cd /
mount -t proc proc /proc
# load the USB modules
insmod -f usbcore.o -o usbcore0
insmod -f pcipool.o -o pcipool0
insmod -f usb-ohci.o -o usb-ohci0
insmod -f usb-ohci-ep93xx.o -o usb-ohci-ep93xx0
insmod -f scsi_mod.o -o scsi_mod0
insmod -f sd_mod.o -o sd_mod0
insmod -f usb-storage.o -o usb-storage0
# sleep 'til the scsi filesystem is available (would be better to
loop/check)
sleep 3
# mount scsi drive
mount /dev/scsi/host0/bus0/target0/lun0/part1 /mnt
cd /mnt
# pivot_root to the current directory, rename old directory to "tmp"
pivot_root . tmp
# move the old dev and proc directories to the new file system?
# Is this correct way to move /proc and /dev to /mnt/proc and /mnt/dev as
you suggested?
/bin/mount --move tmp/dev /dev
/bin/mount --move -t proc tmp/proc /proc
# all seems OK 'til now, but no matter how I exec /sbin/init, I get
the Kernel panic message...
exec /usr/sbin/chroot . /bin/sh <<- EOF
exec /sbin/init
EOF
- Place the initrd on my webserver so I can load it remotely, then
execute the following from RedBoot:
load -m http -h 192.168.1.12 -p 8080 -r -b 0x00600000 /test/initrdusb
# load existing kernel from flash
fis load vmlinux
# exec kernel
exec -r 0x00600000 -s 0x200000 -b 0x00218000 -l 0x000C0000 -c
"console=ttyAM0,115200 root=/dev/ram0 init=/linuxrc rw"
But the boot process ends always with:
Kernel panic: Attempted to kill init!
Any insight into why the kernel panic happens would be great, but I
would greatly appreciate a working initrd if anyone has one!
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