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Diffstat (limited to 'static/netbsd/man8/man8.sgimips/boot.8')
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diff --git a/static/netbsd/man8/man8.sgimips/boot.8 b/static/netbsd/man8/man8.sgimips/boot.8 new file mode 100644 index 00000000..71c687d4 --- /dev/null +++ b/static/netbsd/man8/man8.sgimips/boot.8 @@ -0,0 +1,132 @@ +.\" $NetBSD: boot.8,v 1.7 2017/02/17 22:30:28 christos Exp $ +.\" +.\" Copyright (c) 2006 Stephen M. Rumble +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. The name of the author may not be used to endorse or promote products +.\" derived from this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +.\" +.Dd February 17, 2017 +.Dt BOOT 8 sgimips +.Os +.Sh NAME +.Nm boot +.Nd sgimips system bootstrapping procedures +.Sh DESCRIPTION +.Tn Silicon Graphics +MIPS-based computers all feature essentially similar firmware systems. +However, as of the Indigo R4x00 series (IP20), quasi- +.Tn ARCS +(Advanced RISC Computing Specification) compatible features are also present. +All known PROM implementations support loading executables from disk +devices, as well as from the network via BOOTP and TFTP. +.Sh Disk Booting +.Tn SGI +provides a small filesystem at the beginning of each bootable disk called +a Volume Header, which contains a boot loader and other standalone utilities. +Booting +.Nx +requires that we write our bootloader into to the volume header using +.Xr sgimips/sgivol 8 . +.Pp +Once a bootloader is present in the volume header, it may be executed +directly by the PROM either manually, or at boot time using the +.Dq OSLoader +PROM environment variable. +The +.Nx +bootloader will obtain the kernel filename to boot from the PROM or EEPROM. +This is specified by setting the PROM environment variable +.Dq OSLoadFilename +to an appropriate value. +For instance, +.Dq /netbsd.ecoff . +.Pp +For example, the following will configure the PROM to use the bootloader +.Dq aoutboot +to load the kernel +.Dq netbsd.old +.Pp +.Dl Ic setenv OSLoader aoutboot +.Dl Ic setenv OSLoadFilename netbsd.old +.Sh Network Booting +The system firmware will obtain an IP address, TFTP server address, and an +optional filename from the BOOTP server and download it via TFTP. +The PROM's configurable network address environment variable +.Dq netaddr +must match the address provided by the BOOTP server. +.Pp +An example BOOTP entry for +.Xr dhcpd 8 +follows: +.Pp +.Bd -unfilled -offset indent + host indigo3k { + hardware ethernet 08:00:69:42:42:42; + fixed-address 192.168.0.2; + option host-name "indigo3k.foo"; + #filename "/netbsd.ecoff"; + next-server 192.168.0.1; + option root-path "/export/indigo3k/root"; + server-name "192.168.0.1"; + } +.Ed +.Pp +To boot a kernel named +.Dq netbsd.ecoff +the user would type: +.Dl Ic boot -f bootp():/netbsd.ecoff +.Pp +See +.Xr dhcpd.conf 5 +for more information on configuring +.Xr dhcpd 8 +as a BOOTP server. +.Sh SEE ALSO +.Xr dhcpd.conf 5 , +.Xr dhcpd 8 , +.Xr sgimips/sgivol 8 +.Sh CAVEATS +Some older PROM revisions do not support loading of ELF images. +The build system automatically prepares ECOFF versions, which are +correctly interpreted. +.Sh BUGS +.Nx +does not support booting from disk on systems lacking an ARCS-compatible +firmware (presently supported systems include Personal Iris and Indigo R3000). +It is possible to work around this by creating a sufficiently large volume +header and placing the kernel in it, or by network booting. +.Pp +Some firmware revisions have a bug, which precludes them from communicating +with TFTP servers using ports above 32767. +When using +.Nx +as the TFTP server, this problem may be worked around as follows: +.Pp +.Dl Ic sysctl -w net.inet.ip.anonportmin=20000 +.Dl Ic sysctl -w net.inet.ip.anonportmax=32767 +.Pp +Another bug exists in some firmware revisions, which precludes the PROM from +communicating with TFTP servers that employ PMTU (Path MTU) discovery. +This bug may be worked around by disabling PMTU on the TFTP server. +This does not presently affect +.Nx +servers. +.Pp +This man page is horribly incomplete. |