829 lines
20 KiB
INI
829 lines
20 KiB
INI
.TH PLAN9.INI 8
|
|
.SH NAME
|
|
plan9.ini \- configuration file for PCs
|
|
.SH SYNOPSIS
|
|
.I none
|
|
.SH DESCRIPTION
|
|
When booting Plan 9 on a PC, the DOS program
|
|
.IR 9boot (8)
|
|
first reads a DOS file
|
|
containing configuration information from the boot disk.
|
|
This file,
|
|
.BR plan9.ini ,
|
|
looks like a shell script containing lines of the form
|
|
.IP
|
|
.EX
|
|
name=\f2value\fP
|
|
.EE
|
|
.LP
|
|
each of which defines a kernel or device parameter.
|
|
.PP
|
|
Blank lines and
|
|
Carriage Returns
|
|
.IB ( \er )
|
|
are ignored.
|
|
.B #
|
|
comments are ignored, but are only recognised if
|
|
.L #
|
|
appears at the start of a line.
|
|
.PP
|
|
For devices, the generic format of
|
|
.I value
|
|
is
|
|
.IP
|
|
.EX
|
|
type=TYPE [port=N] [irq=N] [mem=N] [size=N] [dma=N] [ea=N]
|
|
.EE
|
|
.LP
|
|
specifying the controller type,
|
|
the base I/O port of the interface, its interrupt
|
|
level, the physical starting address of any mapped memory,
|
|
the length in bytes of that memory, the DMA channel,
|
|
and for Ethernets an override of the physical network address.
|
|
Not all elements are relevant to all devices; the relevant values
|
|
and their defaults are defined below in the description of each device.
|
|
.PP
|
|
The file is used by the kernel to configure the hardware available.
|
|
The information it contains is also passed to the boot
|
|
process, and subsequently other programs,
|
|
as environment variables
|
|
(see
|
|
.IR boot (8)).
|
|
However, values whose names begin with an asterisk
|
|
.B *
|
|
are used by the kernel and are not converted into environment variables.
|
|
.PP
|
|
The following sections describe how variables are used.
|
|
.SS ETHERNET
|
|
.SS \fLetherX=value\fP
|
|
This defines an Ethernet interface.
|
|
.IR X ,
|
|
a unique monotonically increasing number beginning at 0,
|
|
identifies an Ethernet card to be probed at system boot.
|
|
Probing stops when a card is found or there is no line for
|
|
.BR etherX+1 .
|
|
After probing as directed by the
|
|
.BI ether X
|
|
lines, any remaining Ethernet cards that can be automatically
|
|
detected are added.
|
|
Almost all cards can be automatically detected.
|
|
For debugging purposes, automatic probing can
|
|
be disabled by specifying the line
|
|
.BR *noetherprobe= .
|
|
.PP
|
|
Some cards are software configurable and do not require all options.
|
|
Unspecified options default to the factory defaults.
|
|
.PP
|
|
Known
|
|
.IR TYPE s
|
|
are
|
|
.\" .TF ga620
|
|
.TF vt6102
|
|
.PD
|
|
.TP
|
|
.B igbe
|
|
The Intel 8254X Gigabit Ethernet controllers,
|
|
as found on the Intel PRO/1000 adapters for copper (not fiber).
|
|
Completely configurable.
|
|
.TP
|
|
.B igbepcie
|
|
The Intel 8256[36], 8257[12], and 82573[ev] Gigabit Ethernet
|
|
PCI-Express controllers.
|
|
Completely configurable.
|
|
.TP
|
|
.B rtl8169
|
|
The Realtek 8169 Gigabit Ethernet controller.
|
|
Completely configurable.
|
|
.TP
|
|
.B ga620
|
|
Netgear GA620 and GA620T Gigabit Ethernet cards,
|
|
and other cards using the Alteon Acenic chip such as the
|
|
Alteon Acenic fiber and copper cards,
|
|
the DEC DEGPA-SA and the SGI Acenic.
|
|
Completely configurable.
|
|
.TP
|
|
.B dp83820
|
|
National Semiconductor DP83820-based Gigabit Ethernet adapters, notably
|
|
the D-Link DGE-500T.
|
|
Completely configurable.
|
|
.TP
|
|
.B vgbe
|
|
The VIA Velocity Gigabit Ethernet controller.
|
|
Known to drive the VIA8237 (ABIT AV8), but at 100Mb/s full-duplex only.
|
|
.TP
|
|
.B m10g
|
|
The Myricom 10-Gigabit Ethernet 10G-PCIE-8A controller.
|
|
Completely configurable.
|
|
Can't boot through these due to enormous firmware loads.
|
|
.TP
|
|
.B i82598
|
|
The Intel 8259[89] 10-Gigabit Ethernet PCI-Express controllers.
|
|
Completely configurable.
|
|
.TP
|
|
.B i82557
|
|
Cards using the Intel 8255[789] Fast Ethernet PCI Bus LAN Controller such as the
|
|
Intel EtherExpress PRO/100B.
|
|
Completely configurable, no options need be given.
|
|
If you need to force the media, specify
|
|
one of the options (no value)
|
|
.BR 10BASE-T ,
|
|
.BR 10BASE-2 ,
|
|
.BR 10BASE-5 ,
|
|
.BR 100BASE-TX ,
|
|
.BR 10BASE-TFD ,
|
|
.BR 100BASE-TXFD ,
|
|
.BR 100BASE-T4 ,
|
|
.BR 100BASE-FX ,
|
|
or
|
|
.BR 100BASE-FXFD .
|
|
Completely configurable.
|
|
.TP
|
|
.B 2114x
|
|
Cards using the Digital Equipment (now Intel) 2114x PCI Fast Ethernet Adapter Controller,
|
|
for example the Netgear FA310.
|
|
Completely configurable, no options need be given.
|
|
Media can be specified the same was as for the
|
|
.BR i82557 .
|
|
Some cards using the
|
|
.B PNIC
|
|
and
|
|
.B PNIC2
|
|
near-clone chips may also work.
|
|
.TP
|
|
.B 83815
|
|
National Semiconductor DP83815-based adapters, notably
|
|
the Netgear FA311, Netgear FA312, and various SiS built-in
|
|
controllers such as the SiS900.
|
|
On the SiS controllers, the Ethernet address is not detected properly;
|
|
specify it with an
|
|
.B ea=
|
|
attribute.
|
|
Completely configurable.
|
|
.TP
|
|
.B rtl8139
|
|
The Realtek 8139 Fast Ethernet controller.
|
|
Completely configurable.
|
|
.TP
|
|
.B vt6102
|
|
The VIA VT6102 Fast Ethernet Controller (Rhine II).
|
|
.TP
|
|
.B smc91cxx
|
|
SMC 91cXX chip-based PCMCIA adapters, notably the SMC EtherEZ card.
|
|
.TP
|
|
.B elnk3
|
|
The 3COM Etherlink III series of cards including the 5x9, 59x, and 905 and 905B.
|
|
Completely configurable, no options need be given.
|
|
The media may be specified by setting
|
|
.B media=
|
|
to the value
|
|
.BR 10BaseT ,
|
|
.BR 10Base2 ,
|
|
.BR 100BaseTX ,
|
|
.BR 100BaseFX ,
|
|
.BR aui ,
|
|
and
|
|
.BR mii .
|
|
If you need to force full duplex, because for example the Ethernet switch does not negotiate correctly,
|
|
just name the word (no value)
|
|
.B fullduplex
|
|
or
|
|
.BR 100BASE-TXFD .
|
|
Similarly, to force 100Mbit operation, specify
|
|
.BR force100 .
|
|
Port 0x110 is used for the little ISA configuration dance.
|
|
.TP
|
|
.B 3c589
|
|
The 3COM 3C589 series PCMCIA cards, including the
|
|
3C562 and the 589E.
|
|
There is no support for the modem on the 3C562.
|
|
Completely configurable, no options need be given.
|
|
Defaults are
|
|
.EX
|
|
port=0x240 irq=10
|
|
.EE
|
|
The media may be specified as
|
|
.B media=10BaseT
|
|
or
|
|
.BR media=10Base2 .
|
|
.TP
|
|
.B ec2t
|
|
The Linksys Combo PCMCIA EthernetCard (EC2T),
|
|
EtherFast 10/100 PCMCIA cards (PCMPC100) and integrated controllers (PCM100),
|
|
the Netgear FA410TX 10/100 PCMCIA card
|
|
and the Accton EtherPair-PCMCIA (EN2216).
|
|
Completely configurable, no options need be given.
|
|
Defaults are
|
|
.EX
|
|
port=0x300 irq=9
|
|
.EE
|
|
These cards are NE2000 clones.
|
|
Other NE2000 compatible PCMCIA cards may be tried
|
|
with the option
|
|
.EX
|
|
id=string
|
|
.EE
|
|
where
|
|
.B string
|
|
is a unique identifier string contained in the attribute
|
|
memory of the card (see
|
|
.IR pcmcia (8));
|
|
unlike most options in
|
|
.BR plan9.ini ,
|
|
this string is case-sensitive.
|
|
The option
|
|
.B dummyrr=[01]
|
|
can be used to turn off (0) or on (1) a dummy remote read in the driver
|
|
in such cases,
|
|
depending on how NE2000 compatible they are.
|
|
.TP
|
|
.B ne2000
|
|
Not software configurable iff ISA;
|
|
PCI clones or supersets are software configurable;
|
|
includes the Realtek 8029 clone used by Parallels.
|
|
16-bit card.
|
|
Defaults are
|
|
.EX
|
|
port=0x300 irq=2 mem=0x04000 size=0x4000
|
|
.EE
|
|
The option (no value)
|
|
.B nodummyrr
|
|
is needed on some (near) clones to turn off a dummy remote read in the driver.
|
|
.TP
|
|
.B amd79c970
|
|
The AMD PCnet PCI Ethernet Adapter (AM79C970).
|
|
(This is the Ethernet adapter used by VMware.)
|
|
Completely configurable, no options need be given.
|
|
.TP
|
|
.B wd8003
|
|
Includes WD8013 and SMC Elite and Elite Ultra cards. There are varying degrees
|
|
of software configurability. Cards may be in either 8-bit or 16-bit slots.
|
|
Defaults are
|
|
.EX
|
|
port=0x280 irq=3 mem=0xD0000 size=0x2000
|
|
.EE
|
|
BUG: On many machines only the 16 bit card works.
|
|
.TP
|
|
.B sink
|
|
A
|
|
.B /dev/null
|
|
for Ethernet packets \(em the interface discards sent
|
|
packets and never receives any.
|
|
This is used to provide a test bed for
|
|
some experimental Ethernet bridging software.
|
|
.TP
|
|
.B wavelan
|
|
Lucent Wavelan (Orinoco) IEEE 802.11b
|
|
and compatible PCMCIA cards.
|
|
Compatible cards include the Dell TrueMobile 1150
|
|
and the Linksys Instant Wireless Network PC Card.
|
|
Port and IRQ defaults are 0x180 and 3 respectively.
|
|
.IP
|
|
These cards take a number of unique options to aid in
|
|
identifying the card correctly on the 802.11b network.
|
|
The network may be
|
|
.I "ad hoc"
|
|
or
|
|
.I managed
|
|
(i.e. use an access point):
|
|
.EX
|
|
mode=[adhoc, managed]
|
|
.EE
|
|
and defaults to
|
|
.IR managed .
|
|
The 802.11b network to attach to
|
|
.RI ( managed
|
|
mode)
|
|
or identify as
|
|
.RI ( "ad hoc"
|
|
mode),
|
|
is specified by
|
|
.EX
|
|
essid=string
|
|
.EE
|
|
and defaults to a null string.
|
|
The card station name is given by
|
|
.EX
|
|
station=string
|
|
.EE
|
|
and defaults to
|
|
.IR "Plan 9 STA" .
|
|
The channel to use is given by
|
|
.EX
|
|
channel=number
|
|
.EE
|
|
where
|
|
.I number
|
|
lies in the range 1 to 16 inclusive;
|
|
the channel is normally negotiated automatically.
|
|
.IP
|
|
If the card is capable of encryption,
|
|
the following options may be used:
|
|
.EX
|
|
crypt=[off, on]
|
|
.EE
|
|
and defaults to
|
|
.IR on .
|
|
.EX
|
|
key\fIN\fP=string
|
|
.EE
|
|
sets the encryption key
|
|
.I N
|
|
(where
|
|
.I N
|
|
is in the range 1 to 4 inclusive) to
|
|
.IR string ;
|
|
this will also set the transmit key to
|
|
.I N
|
|
(see below).
|
|
There are two formats for
|
|
.I string
|
|
which depend on the length of the string.
|
|
If it is exactly 5 or 13 characters long it is assumed
|
|
to be an alphanumeric key; if it is exactly 10 or 26 characters
|
|
long the key is assumed to be in hex format (without a leading
|
|
.IR 0x ).
|
|
The lengths are checked,
|
|
as is the format of a hex key.
|
|
.EX
|
|
txkey=number
|
|
.EE
|
|
sets the transmit key to use to be
|
|
.I number
|
|
in the range 1 to 4 inclusive.
|
|
If it is desired to exclude or include unencrypted packets
|
|
.EX
|
|
clear=[off, on]
|
|
.EE
|
|
configures reception and defaults to inclusion.
|
|
.IP
|
|
The defaults are intended to match the common case of
|
|
a managed network with encryption and a typical entry would
|
|
only require, for example
|
|
.EX
|
|
essid=left-armpit key1=afish key2=calledraawaru
|
|
.EE
|
|
if the port and IRQ defaults are used.
|
|
These options may be set after boot by writing to the device's
|
|
.I ctl
|
|
file using a space as the separator between option and value, e.g.
|
|
.EX
|
|
echo 'key2 1d8f65c9a52d83c8e4b43f94af' >/net/ether0/0/ctl
|
|
.EE
|
|
.IP
|
|
Card-specific power management may be enabled/disabled by
|
|
.EX
|
|
pm=[on, off]
|
|
.EE
|
|
.TP
|
|
.B wavelanpci
|
|
PCI Ethernet adapters that use the same Wavelan
|
|
programming interface.
|
|
Currently the only tested cards are those based on the
|
|
Intersil Prism 2.5 chipset.
|
|
.
|
|
.SS DISKS, TAPES
|
|
(S)ATA controllers are autodetected.
|
|
.SS \fL*nodma=\fP
|
|
disable DMA on ata devices.
|
|
.SS \fLusbX=type=uhci\fP
|
|
.SS \fLusbX=type=ohci\fP
|
|
This specifies the settings for a USB UHCI or OHCI controller.
|
|
Like the Ethernet controllers, USB controllers are autodetected
|
|
after scanning for the ones listed in
|
|
.IR plan9.ini .
|
|
Thus, most systems will not need a
|
|
.B usbX
|
|
line.
|
|
Also like the Ethernet controllers, USB autoprobing can be
|
|
disabled by specifying the line
|
|
.BR *nousbprobe= .
|
|
.SS \fLscsiX=value\fP
|
|
This defines a SCSI interface which cannot be automatically detected
|
|
by the kernel.
|
|
.PP
|
|
Known
|
|
.IR TYPE s
|
|
are
|
|
.TP
|
|
.B aha1542
|
|
Adaptec 154x series of controllers (and clones).
|
|
Almost completely configurable, only the
|
|
.EX
|
|
port=0x300
|
|
.EE
|
|
option need be given.
|
|
.PP
|
|
NCR/Symbios/LSI-Logic 53c8xx-based adapters
|
|
and Mylex MultiMaster (Buslogic BT-*) adapters are
|
|
automatically detected and need no entries.
|
|
.PP
|
|
By default, the NCR 53c8xx driver searches for up to 32 controllers.
|
|
This can be changed by setting the variable
|
|
.BR *maxsd53c8xx .
|
|
.PP
|
|
By default the Mylex driver resets SCSI cards by using
|
|
both the hard reset and SCSI bus reset flags in the driver interface.
|
|
If a variable
|
|
.BR *noscsireset
|
|
is defined, the SCSI bus reset flag is omitted.
|
|
.SS \fLaoeif=\fP\fIlist\fP
|
|
This specifies a space-separated
|
|
.I list
|
|
of Ethernet interfaces to be bound at boot to the ATA-over-Ethernet driver,
|
|
.IR aoe (3).
|
|
For example,
|
|
.LR "aoeif=ether0 ether1" .
|
|
Only interfaces on this list will initially be accessible via AoE.
|
|
.SS \fLaoedev=e!#æ/aoe/\fIshelf\fL.\fIslot\fR
|
|
This specifies an ATA-over-Ethernet device accessible via the interfaces
|
|
named in
|
|
.IR aoeif
|
|
on AoE
|
|
.I shelf
|
|
and
|
|
.I slot
|
|
to use as a root device for bootstrapping.
|
|
.SS AUDIO
|
|
.SS \fLaudioX=value\fP
|
|
This defines a sound interface.
|
|
.PP
|
|
Known types are
|
|
.TF ess1688
|
|
.PD
|
|
.TP
|
|
.B sb16
|
|
Sound Blaster 16.
|
|
.TP
|
|
.B ess1688
|
|
A Sound Blaster clone.
|
|
.PP
|
|
The DMA channel may be any of 5, 6, or 7.
|
|
The defaults are
|
|
.IP
|
|
.EX
|
|
port=0x220 irq=7 dma=5
|
|
.EE
|
|
.SS Uarts
|
|
Plan 9 automatically configures COM1 and COM2, if found,
|
|
as
|
|
.B eia0
|
|
(port 0x3F8, IRQ4)
|
|
and
|
|
.B eia1
|
|
(port 0x2F8, IRQ3)
|
|
respectively.
|
|
These devices can be disabled by adding a line:
|
|
.IP
|
|
.EX
|
|
eia\fIX\fP=disabled
|
|
.EE
|
|
.LP
|
|
This is typically done in order to reuse the IRQ for
|
|
another device.
|
|
.PP
|
|
Plan 9 used to support various serial concentrators,
|
|
including the TTC 8 serial line card and various models
|
|
in the Star Gate Avanstar series of intelligent serial boards.
|
|
These are no longer supported; the much simpler
|
|
Perle PCI-Fast4, PCI-Fast8, and PCI-Fast16 controllers
|
|
have taken their places.
|
|
These latter cards are automatically detected
|
|
and need no configuration lines.
|
|
.PP
|
|
The line
|
|
.B serial=type=com
|
|
can be used to specify settings for a PCMCIA modem.
|
|
.SS \fLmouseport=value\fP
|
|
This specifies where the mouse is attached.
|
|
.I Value
|
|
can be
|
|
.TP
|
|
.B ps2
|
|
the PS2 mouse/keyboard port. The BIOS setup procedure
|
|
should be used to configure the machine appropriately.
|
|
.TP
|
|
.B ps2intellimouse
|
|
an Intellimouse on the PS2 port.
|
|
.TP
|
|
.B 0
|
|
for COM1
|
|
.TP
|
|
.B 1
|
|
for COM2
|
|
.SS \fLmodemport=value\fP
|
|
Picks the UART line to call out on.
|
|
This is used when connecting to a file server over
|
|
an async line.
|
|
.I Value
|
|
is the number of the port.
|
|
.SS \fLconsole=value params\fP
|
|
This is used to specify the console device.
|
|
The default
|
|
value is
|
|
.BR cga ;
|
|
a number
|
|
.B 0
|
|
or
|
|
.B 1
|
|
specifies
|
|
.I COM1
|
|
or
|
|
.I COM2
|
|
respectively.
|
|
A serial console is initially configured with the
|
|
.IR uart (3)
|
|
configuration string
|
|
.B b9600
|
|
.B l8
|
|
.B pn
|
|
.BR s1 ,
|
|
specifying 9600 baud,
|
|
8 bit bytes, no parity, and one stop bit.
|
|
If
|
|
.I params
|
|
is given, it will be used to further
|
|
configure the uart.
|
|
Notice that there is no
|
|
.B =
|
|
sign in the
|
|
.I params
|
|
syntax.
|
|
For example,
|
|
.IP
|
|
.EX
|
|
console=0 b19200 po
|
|
.EE
|
|
.LP
|
|
would use COM1 at 19,200 baud
|
|
with odd parity.
|
|
.SS "PC CARD"
|
|
.SS \fLpccard0=disabled\fP
|
|
Disable probing for and automatic configuration of PC card controllers.
|
|
.SS \fLpcmciaX=type=XXX irq=value\fP
|
|
If the default IRQ for the
|
|
PCMCIA
|
|
is correct, this entry can be omitted. The value of
|
|
.B type
|
|
is ignored.
|
|
.SS \fLpcmcia0=disabled\fP
|
|
Disable probing for and automatic configuration of PCMCIA controllers.
|
|
.SS BOOTING
|
|
.SS \fLbootfile=value\fP
|
|
This is used to direct the actions of
|
|
.IR 9boot (8)
|
|
by naming the file from which to load the kernel in
|
|
the current BIOS boot device.
|
|
.SS \fLbootargs=value\fP
|
|
The value of this variable is passed to
|
|
.IR boot (8)
|
|
by the kernel as the name of the root file system.
|
|
It is typically used to specify additional arguments to
|
|
pass to
|
|
.IR kfs (4)
|
|
or
|
|
.IR ipconfig (8).
|
|
For example, if the system is to run from a local
|
|
.IR kfs (4)
|
|
partition, the definition might read
|
|
.BR bootargs=local!#S/sdC0/fs .
|
|
See
|
|
.IR boot (8)
|
|
for more.
|
|
.SS \fLnobootprompt=value\fP
|
|
Suppress the
|
|
.L "root from"
|
|
prompt and use
|
|
.I value
|
|
as the answer instead.
|
|
.SS \fLuser=value\fP
|
|
Suppress the
|
|
.L "user"
|
|
prompt and use
|
|
.I value
|
|
as the answer instead.
|
|
.SS \fLdebugfactotum=\fP
|
|
Causes
|
|
.IR boot (8)
|
|
to start
|
|
.I factotum
|
|
with the
|
|
.B -p
|
|
option, so that it can be debugged.
|
|
.SS \fLfactotumopts=options\fP
|
|
Causes
|
|
.IR boot (8)
|
|
to start
|
|
.I factotum
|
|
with the given
|
|
.IR options ,
|
|
which must be a single word (i.e., contain no whitespace).
|
|
.SS \fLventi=value\fP
|
|
When booting from a local server backed by a local
|
|
or remote venti server,
|
|
this variable specifies how to establish the connection to the
|
|
venti server.
|
|
See
|
|
.IR boot (8)
|
|
for more.
|
|
.SS \fLcfs=value\fP
|
|
This gives the name of the file holding the disk partition
|
|
for the cache file system,
|
|
.IR cfs (4).
|
|
Extending the
|
|
.B bootargs
|
|
example, one would write
|
|
.BR cfs=#S/sdC0/cache .
|
|
.SS \fLbootdisk=value\fP
|
|
This deprecated variable was used to specify the disk used by
|
|
the cache file system and other disk-resident services.
|
|
It is superseded by
|
|
.B bootargs
|
|
and
|
|
.BR cfs .
|
|
.SS \fLfs=a.b.c.d\fP
|
|
.SS \fLauth=a.b.c.d\fP
|
|
These specify the IP address of the file and authentication server
|
|
to use when mounting a network-provided root file system.
|
|
They are used only if the addresses cannot be determined via DHCP.
|
|
.SS PROCESSOR
|
|
.SS \fL*norealmode=\fP
|
|
The PC kernel switches the processor to 16-bit real mode
|
|
to run BIOS interrupts, for example to find the memory map or to enable VESA.
|
|
This variable disables such switches.
|
|
.SS \fL*noe820scan=\fP
|
|
When available, the PC kernel uses the BIOS E820 memory map
|
|
to size memory. This variable disables the scan.
|
|
.SS \fL*maxmem=value\fP
|
|
This defines the maximum physical address that the system will scan when sizing memory.
|
|
By default the PC operating system will scan up to 3.75 gigabytes
|
|
(0xF0000000, the base of kernel virtual address space), but setting
|
|
.B *maxmem
|
|
will limit the scan.
|
|
.B *maxmem
|
|
must be less than 3.75 gigabytes.
|
|
This variable is not consulted if using the E820 memory map.
|
|
.SS \fL*kernelpercent=value\fP
|
|
This defines what percentage of available memory is reserved for the kernel allocation pool.
|
|
The remainder is left for user processes. The default
|
|
.I value
|
|
is
|
|
.B 30
|
|
on CPU servers,
|
|
.B 60
|
|
on terminals with less than 16MB of memory,
|
|
and
|
|
.B 40
|
|
on terminals with memories of 16MB or more.
|
|
Terminals use more kernel memory because
|
|
.IR draw (3)
|
|
maintains its graphic images in kernel memory.
|
|
This deprecated option is rarely necessary in newer kernels.
|
|
.SS \fL*nomce=value\fP
|
|
If machine check exceptions are supported by the processor,
|
|
then they are enabled by default.
|
|
Setting this variable to
|
|
.B 1
|
|
causes them to be disabled even when available.
|
|
.SS \fL*nomp=\fP
|
|
A multiprocessor machine will enable all processors by default.
|
|
Setting
|
|
.B *nomp
|
|
restricts the kernel to starting only one processor and using the
|
|
traditional interrupt controller.
|
|
.SS \fL*ncpu=value\fP
|
|
Setting
|
|
.B *ncpu
|
|
restricts the kernel to starting at most
|
|
.I value
|
|
processors.
|
|
.SS \fL*pcimaxbno=value\fP
|
|
This puts a limit on the maximum bus number probed
|
|
on a PCI bus (default 7).
|
|
For example, a
|
|
.I value
|
|
of 1 should suffice on a 'standard' motherboard with an AGP slot.
|
|
This, and
|
|
.B *pcimaxdno
|
|
below are rarely used and only on troublesome or suspect hardware.
|
|
.SS \fL*pcimaxdno=value\fP
|
|
This puts a limit on the maximum device number probed
|
|
on a PCI bus (default 31).
|
|
.SS \fL*nopcirouting=\fP
|
|
Disable pci routing during boot. May solve interrupt routing
|
|
problems on certain machines.
|
|
.SS \fL*nodumpstack=\fP
|
|
Disable printing a stack dump on panic.
|
|
Useful if there is only a limited cga screen available,
|
|
otherwise the textual information about the panic may scroll off.
|
|
.\" .SS \fL*nobios=\fP
|
|
.\" what does this do? something with pci
|
|
.SS \fLioexclude=value\fP
|
|
Specifies a list of ranges of I/O ports to exclude from use by drivers.
|
|
Ranges are inclusive on both ends and separated by commas.
|
|
For example:
|
|
.EX
|
|
ioexclude=0x330-0x337,0x430-0x43F
|
|
.EE
|
|
.SS \fLumbexclude=value\fP
|
|
Specifies a list of ranges of UMB to exclude from use by drivers.
|
|
Ranges are inclusive on both ends and separated by commas.
|
|
For example:
|
|
.EX
|
|
umbexclude=0xD1800-0xD3FFF
|
|
.EE
|
|
.SS \fLapm0=\fP
|
|
This enables the ``advanced power management'' interface
|
|
as described in
|
|
.IR apm (3)
|
|
and
|
|
.IR apm (8).
|
|
The main feature of the interface is the ability to watch
|
|
battery life (see
|
|
.IR stats (8)).
|
|
It is not on by default because it causes problems on some laptops.
|
|
.SS VIDEO
|
|
.SS \fLmonitor=value\fP
|
|
.SS \fLvgasize=value\fP
|
|
These are used not by the kernel but by
|
|
.I termrc
|
|
(see
|
|
.IR cpurc (8))
|
|
when starting
|
|
.IR vga (8).
|
|
.SS \fL*dpms=value\fP
|
|
This is used to specify the screen blanking behavior of the MGA4xx
|
|
video driver.
|
|
Values are
|
|
.BR standby ,
|
|
.BR suspend ,
|
|
and
|
|
.BR off .
|
|
The first two specify differing levels of power saving;
|
|
the third turns the monitor off completely.
|
|
.SS NVRAM
|
|
.SS \fLnvram=file\fP
|
|
.SS \fLnvrlen=length\fP
|
|
.SS \fLnvroff=offset\fP
|
|
This is used to specify an nvram device and optionally the length of the ram
|
|
and read/write offset to use.
|
|
These values are consulted by
|
|
.I readnvram
|
|
(see
|
|
.IR authsrv (2)).
|
|
The most common use of the nvram is to hold a
|
|
.IR secstore (1)
|
|
password for use by
|
|
.IR factotum (4).
|
|
.SS \fLnvr=value\fP
|
|
This is used by the WORM file server kernel to locate a file holding information
|
|
to configure the file system.
|
|
The file cannot live on a SCSI disk.
|
|
The default is
|
|
.B fd!0!plan9.nvr
|
|
(sic),
|
|
unless
|
|
.B bootfile
|
|
is set, in which case it is
|
|
.B plan9.nvr
|
|
on the same disk as
|
|
.BR bootfile .
|
|
The syntax is either
|
|
.BI fd! unit ! name
|
|
or
|
|
.BI hd! unit ! name
|
|
where
|
|
.I unit
|
|
is the numeric unit id.
|
|
This variant syntax is a vestige of the file server kernel's origins.
|
|
.SH EXAMPLES
|
|
.PP
|
|
A representative
|
|
.BR plan9.ini :
|
|
.IP
|
|
.EX
|
|
% cat /n/9fat:/plan9.ini
|
|
ether0=type=3C509
|
|
mouseport=ps2
|
|
modemport=1
|
|
serial0=type=generic port=0x3E8 irq=5
|
|
monitor=445x
|
|
vgasize=1600x1200x8
|
|
bootfile=/386/9pcf
|
|
%
|
|
.EE
|
|
.SH "SEE ALSO"
|
|
.IR 9boot (8),
|
|
.IR booting (8),
|
|
.IR boot (8)
|
|
.SH BUGS
|
|
Being able to set the console device to other than a
|
|
display is marginally useful on file servers; MS-DOS
|
|
and the programs which run under it are so tightly bound
|
|
to the display that it is necessary to have a display if any
|
|
setup or reconfiguration programs need to be run.
|
|
Also, the delay before any messages appear at boot time
|
|
is disconcerting, as any error messages from the BIOS
|
|
are lost.
|
|
.PP
|
|
This idea is at best an interesting experiment that needs another iteration.
|