NetBSD/mipsco: Installation Notes
This document is still in the early stages of construction, and will eventually be replaced once a INSTALL manpage has been written
The following devices are currently supported on the Mips Magnum 3000 workstation
- Onboard NCR 53c94 SCSI Controller
- Onboard AM7990 Lance Ethernet controller
- Onboard Z8530 Serial Ports 0 and 1
The following devices are not currently supported:
- ISA Expansion Bus
- Intel 82072 Floppy Disk controller
- Framebuffer (both mono and colour)
- PS/2 Keyboard Controller
Currently you can only bootstrap the NetBSD kernel from a RISC/os disk partition or across the network using bootp.
The NetBSD partition has to be created on another big-endian machine such as NetBSD/sparc or NetBSD/newsmips
Work is underway to simplify the installation procedure with a miniroot filesystem and a pre-built snapshot that will allow you to partition your disks and install NetBSD directly.
Firstly obtain a copy of the most recent kernel from ftp.NetBSD.org/pub/NetBSD/arch/mipsco/snapshot/
If you have a running version of RISC/os installed on your machine it is by far the easiest method to boot the kernel.
You can simply copy across the netbsd kernel file into / of the RISC/os operating system, shutdown and boot the new kernel using:
This procedure will initially load the stand alone shell (SASH) from dksd(,,8)sash then load the NetBSD kernel.
The Mips PROM firmware has a number of restrictions with its bootp protocol:
- The machines IP address is not determined using bootp - it must be setup in 'netaddr' in the prom environment
- The broadcast address used is strict a Class A B or C netmask based on the netaddr setting
- The broadcast address used is the all-zero's variant of the broadcast address. Some OS's don't accept this address by default and you must specify it in the ifconfig args.
With above restrictions in mind please refer to the Diskless NetBSD HOW-TO for details on setting up a bootp and tftp daemon.
The easiest way of determining the Ethernet MAC address is to snoop the network using tcpdump -e.
Once you have a server setup with bootpd and tftpd running you can boot the kernel from the firmware using the following commands in bold
Rx3230 MIPS Monitor: Version 5.43 OPT Mon May 13 17:31:12 PDT 1991 root Memory size: 33554432 (0x2000000) bytes, 32 MB Icache size: 32768 (0x8000) bytes Dcache size: 32768 (0x8000) bytes >> setenv bootfile bootp()netbsd >> setenv netaddr 192.168.58.46 >> boot Obtaining netbsd from server netbsd-alpha.lab.niwa.cri.nz 1026032+501367+124032 entry: 0x80021000 Copyright (c) 1996, 1997, 1998, 1999, 2000 The NetBSD Foundation, Inc. All rights reserved. Copyright (c) 1982, 1986, 1989, 1991, 1993 The Regents of the University of California. All rights reserved.
One you have successfully booted the NetBSD/mipsco kernel you will need to setup a filesystem with the rest of the distribution.
- On a Big Endian NetBSD machine, label a disk and create a suitable filesystem. The reason why you currently need a big endian machine is the disklabel values are stored in host byte order. This needs to be the same byte order as the MIPS R3000 native format. This procedure is known to work from NetBSD/sparc which places a disklabel at offset 0x80 on the first disk sector.
- Download and untar the NetBSD distribution files onto the root of the new filesystem. You can download a binary snapshot from the NetBSD/mipsco snapshot area of the ftp server.
<rootdir>/devand run ./MAKEDEV all to create the default device nodes.
rc.confand other startup files by hand.
- Unmount the disk and connect the drive to the Mips machine
- Boot the kernel using bootp or off the RISC/os disk partition. When prompted for the root device answer with the device name for the root filesystem disk you just created.
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