Niagra 804: Initial Bootup

Basic boot up via PXE

Get an IP address by DHCP

Request an IP address by typing dhcp:

Octeon cust_n804# dhcp
BOOTP broadcast 1
DHCP client bound to address 172.28.1.84
Octeon cust_n804#

Specify a TFTP server

Specify the TFTP server by setting the serverip environment variable:

Octeon cust_n804# setenv server ip 172.28.0.2

Identify the boot image to pull down

TFTP down the boot image file:

Octeon cust_n804# tftp 0 /images/im_niagra804/vmlinux_n804.bin
Using octmgmt0 device
TFTP from server 172.28.0.2; our IP address is 172.28.1.84
Filename '/images/im_niagra804/vmlinux_n804.bin'.
Load address: 0x20000000
Loading: #################################################
done
Bytes transferred = 33838432 (2045560 hex)

Boot the system

bootoctlinux 0 coremask=f #f = cores 0-3, 3ff = cores 0-9

Booting Debian from SDK created USB/CF image

Start the USB service

Octeon cust_n804#  usb start

You should be able to see the USB storage devices using usb storage at the uBoot prompt:

Octeon cust_n804# usb storage

Load the kernel image to memory

Octeon cust_n804# fatload usb 0:1 $(loadaddr) vmlinux.64

The syntax here is:

• fatload = load a file from FAT filesystem
• usb = device type to be access is a USB storage device
• 0:1 = device 0, partition 1 - devices start at 0, partitions start at 1
• $(loadaddr) = memory address into which the file should be loaded (loadaddr = 0x20000000 by default)
• vmlinux.64 = file to load

Boot the kernel image

Octeon cust_n804# bootoctlinux 0x20000000 numcores=10 root=/dev/sda2

# alternative, use mem=0 to get access to the full 2GB RAM on the IM804 card
Octeon cust_n804# bootoctlinux 0x0 numcores=10 mem=0 root=/dev/sda2 rw rootdelay=10

Setup Networking in BusyBox

Setup the IP networking

  # grab the IP address from the output of dhcp above
  ifconfig mgmt0 172.28.1.84
  route add default gw 172.28.0.1 mgmt0

Setup the resolv.conf file

  # create the following file
  /mnt/sda1 # cat /etc/resolv.conf 
  nameserver 172.28.0.2
  search pxe.boston.co.uk

After this you can use wget to pull files down from the tftp server or the web

Get the Debian root file system up and running

Once the kernel has booted, you'll be in a Busy Box environment. We need to mount and chroot to the Debian roots.

Mount the Debian root fs partition

The root fs is located on the second partition of the storage device. Mount it:

~ # mount /dev/sdb2 /mnt
kjournald starting.  Commit interval 5 seconds
EXT3-fs (sdb2): warning: checktime reached, running e2fsck is recommended
EXT3-fs (sdb2): using internal journal
EXT3-fs (sdb2): recovery complete
EXT3-fs (sdb2): mounted filesystem with writeback data mode

Bind the Busy Box /proc directory

Bind the Busy Box /proc directory to the /proc directory of the Debian root fs:

~ # mount --bind /proc /mnt/proc/

chroot to the Debian root fs and start bash

Chroot:

~ # chroot /mnt
Algorithmics/MIPS FPU Emulator v1.5
sh-4.1#

And start bash:

sh-4.1# bash
root@(none):/#

Set up the networking

root@(none):/# ifconfig mgmt0 172.28.1.95 up
IPv6: ADDRCONF(NETDEV_UP): mgmt0: link is not ready
root@(none):/# mgmt0: Link is up - 1000/Full
IPv6: ADDRCONF(NETDEV_CHANGE): mgmt0: link becomes ready
root@(none):/#

Set up a default gateway

root@jph1:/# route add default gw 172.28.0.1 mgmt0

And confirm with route -n:

root@(none):/# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         172.28.0.1      0.0.0.0         UG    0      0        0 mgmt0
172.28.0.0      0.0.0.0         255.255.0.0     U     0      0        0 mgmt0
root@(none):/#

Create a resolv.conf file

Create an /etc/resolv.conf file so it looks something like:

root@(none):/# cat /etc/resolv.conf 
nameserver 172.28.0.2
search pxe.boston.co.uk

And confirm it works by pinging something:

root@jph1:/# ping www.google.com
PING www.google.com (173.194.41.178) 56(84) bytes of data.
64 bytes from lhr08s04-in-f18.1e100.net (173.194.41.178): icmp_req=1 ttl=55 time=3.67 ms
64 bytes from lhr08s04-in-f18.1e100.net (173.194.41.178): icmp_req=2 ttl=55 time=3.67 ms
^C
--- www.google.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 3.670/3.674/3.678/0.004 ms

Get SSH access working

Start the SSH server:

root@jph1:/# /etc/init.d/ssh restart
Restarting OpenBSD Secure Shell server: sshd.

And mount /dev/pts:

root@jph1:/# mount /dev/pts
root@jph1:/#

N.B. - mounting /dev/pts prevents the following error when attempting to SSH into the Debian O/S

Jons-MacBook-Air-2:~ Jon$ ssh 172.28.32.32 -l root
PTY allocation request failed on channel 0
WARNING: Your password has expired.
Password change required but no TTY available.
Connection to 172.28.32.32 closed.

Update the repository info

root@jph1:/# apt-get update
Hit http://security.debian.org squeeze/updates Release.gpg
Ign http://security.debian.org/ squeeze/updates/contrib Translation-en
Ign http://security.debian.org/ squeeze/updates/main Translation-en
Ign http://security.debian.org/ squeeze/updates/non-free Translation-en
Hit http://security.debian.org squeeze/updates Release
Hit http://security.debian.org squeeze/updates/main mips Packages          
Hit http://security.debian.org squeeze/updates/contrib mips Packages
Hit http://security.debian.org squeeze/updates/non-free mips Packages
Hit http://mirrors.kernel.org squeeze Release.gpg
Ign http://mirrors.kernel.org/debian/ squeeze/contrib Translation-en
Ign http://mirrors.kernel.org/debian/ squeeze/main Translation-en
Ign http://mirrors.kernel.org/debian/ squeeze/non-free Translation-en
Hit http://mirrors.kernel.org squeeze Release
Hit http://mirrors.kernel.org squeeze/main Sources
Hit http://mirrors.kernel.org squeeze/non-free Sources
Hit http://mirrors.kernel.org squeeze/contrib Sources
Hit http://mirrors.kernel.org squeeze/main mips Packages
Hit http://mirrors.kernel.org squeeze/non-free mips Packages
Hit http://mirrors.kernel.org squeeze/contrib mips Packages
Reading package lists... Done