fb08bd274d
The char device will be used as an interface by applications on the guest to communicate with apps on the host. The devices created are placed in /dev/vportNpn where N is the virtio-console device number and n is the port number for that device. One dynamic major device number is allocated for each device and minor numbers are allocated for the ports contained within that device. The file operation for the char devs will be added in the following commits. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1118 lines
40 KiB
Plaintext
1118 lines
40 KiB
Plaintext
#
|
|
# Character device configuration
|
|
#
|
|
|
|
menu "Character devices"
|
|
|
|
config VT
|
|
bool "Virtual terminal" if EMBEDDED
|
|
depends on !S390
|
|
select INPUT
|
|
default y
|
|
---help---
|
|
If you say Y here, you will get support for terminal devices with
|
|
display and keyboard devices. These are called "virtual" because you
|
|
can run several virtual terminals (also called virtual consoles) on
|
|
one physical terminal. This is rather useful, for example one
|
|
virtual terminal can collect system messages and warnings, another
|
|
one can be used for a text-mode user session, and a third could run
|
|
an X session, all in parallel. Switching between virtual terminals
|
|
is done with certain key combinations, usually Alt-<function key>.
|
|
|
|
The setterm command ("man setterm") can be used to change the
|
|
properties (such as colors or beeping) of a virtual terminal. The
|
|
man page console_codes(4) ("man console_codes") contains the special
|
|
character sequences that can be used to change those properties
|
|
directly. The fonts used on virtual terminals can be changed with
|
|
the setfont ("man setfont") command and the key bindings are defined
|
|
with the loadkeys ("man loadkeys") command.
|
|
|
|
You need at least one virtual terminal device in order to make use
|
|
of your keyboard and monitor. Therefore, only people configuring an
|
|
embedded system would want to say N here in order to save some
|
|
memory; the only way to log into such a system is then via a serial
|
|
or network connection.
|
|
|
|
If unsure, say Y, or else you won't be able to do much with your new
|
|
shiny Linux system :-)
|
|
|
|
config CONSOLE_TRANSLATIONS
|
|
depends on VT
|
|
default y
|
|
bool "Enable character translations in console" if EMBEDDED
|
|
---help---
|
|
This enables support for font mapping and Unicode translation
|
|
on virtual consoles.
|
|
|
|
config VT_CONSOLE
|
|
bool "Support for console on virtual terminal" if EMBEDDED
|
|
depends on VT
|
|
default y
|
|
---help---
|
|
The system console is the device which receives all kernel messages
|
|
and warnings and which allows logins in single user mode. If you
|
|
answer Y here, a virtual terminal (the device used to interact with
|
|
a physical terminal) can be used as system console. This is the most
|
|
common mode of operations, so you should say Y here unless you want
|
|
the kernel messages be output only to a serial port (in which case
|
|
you should say Y to "Console on serial port", below).
|
|
|
|
If you do say Y here, by default the currently visible virtual
|
|
terminal (/dev/tty0) will be used as system console. You can change
|
|
that with a kernel command line option such as "console=tty3" which
|
|
would use the third virtual terminal as system console. (Try "man
|
|
bootparam" or see the documentation of your boot loader (lilo or
|
|
loadlin) about how to pass options to the kernel at boot time.)
|
|
|
|
If unsure, say Y.
|
|
|
|
config HW_CONSOLE
|
|
bool
|
|
depends on VT && !S390 && !UML
|
|
default y
|
|
|
|
config VT_HW_CONSOLE_BINDING
|
|
bool "Support for binding and unbinding console drivers"
|
|
depends on HW_CONSOLE
|
|
default n
|
|
---help---
|
|
The virtual terminal is the device that interacts with the physical
|
|
terminal through console drivers. On these systems, at least one
|
|
console driver is loaded. In other configurations, additional console
|
|
drivers may be enabled, such as the framebuffer console. If more than
|
|
1 console driver is enabled, setting this to 'y' will allow you to
|
|
select the console driver that will serve as the backend for the
|
|
virtual terminals.
|
|
|
|
See <file:Documentation/console/console.txt> for more
|
|
information. For framebuffer console users, please refer to
|
|
<file:Documentation/fb/fbcon.txt>.
|
|
|
|
config DEVKMEM
|
|
bool "/dev/kmem virtual device support"
|
|
default y
|
|
help
|
|
Say Y here if you want to support the /dev/kmem device. The
|
|
/dev/kmem device is rarely used, but can be used for certain
|
|
kind of kernel debugging operations.
|
|
When in doubt, say "N".
|
|
|
|
config BFIN_JTAG_COMM
|
|
tristate "Blackfin JTAG Communication"
|
|
depends on BLACKFIN
|
|
help
|
|
Add support for emulating a TTY device over the Blackfin JTAG.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called bfin_jtag_comm.
|
|
|
|
config BFIN_JTAG_COMM_CONSOLE
|
|
bool "Console on Blackfin JTAG"
|
|
depends on BFIN_JTAG_COMM=y
|
|
|
|
config SERIAL_NONSTANDARD
|
|
bool "Non-standard serial port support"
|
|
depends on HAS_IOMEM
|
|
---help---
|
|
Say Y here if you have any non-standard serial boards -- boards
|
|
which aren't supported using the standard "dumb" serial driver.
|
|
This includes intelligent serial boards such as Cyclades,
|
|
Digiboards, etc. These are usually used for systems that need many
|
|
serial ports because they serve many terminals or dial-in
|
|
connections.
|
|
|
|
Note that the answer to this question won't directly affect the
|
|
kernel: saying N will just cause the configurator to skip all
|
|
the questions about non-standard serial boards.
|
|
|
|
Most people can say N here.
|
|
|
|
config COMPUTONE
|
|
tristate "Computone IntelliPort Plus serial support"
|
|
depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI)
|
|
---help---
|
|
This driver supports the entire family of Intelliport II/Plus
|
|
controllers with the exception of the MicroChannel controllers and
|
|
products previous to the Intelliport II. These are multiport cards,
|
|
which give you many serial ports. You would need something like this
|
|
to connect more than two modems to your Linux box, for instance in
|
|
order to become a dial-in server. If you have a card like that, say
|
|
Y here and read <file:Documentation/serial/computone.txt>.
|
|
|
|
To compile this driver as module, choose M here: the
|
|
module will be called ip2.
|
|
|
|
config ROCKETPORT
|
|
tristate "Comtrol RocketPort support"
|
|
depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI)
|
|
help
|
|
This driver supports Comtrol RocketPort and RocketModem PCI boards.
|
|
These boards provide 2, 4, 8, 16, or 32 high-speed serial ports or
|
|
modems. For information about the RocketPort/RocketModem boards
|
|
and this driver read <file:Documentation/serial/rocket.txt>.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called rocket.
|
|
|
|
If you want to compile this driver into the kernel, say Y here. If
|
|
you don't have a Comtrol RocketPort/RocketModem card installed, say N.
|
|
|
|
config CYCLADES
|
|
tristate "Cyclades async mux support"
|
|
depends on SERIAL_NONSTANDARD && (PCI || ISA)
|
|
select FW_LOADER
|
|
---help---
|
|
This driver supports Cyclades Z and Y multiserial boards.
|
|
You would need something like this to connect more than two modems to
|
|
your Linux box, for instance in order to become a dial-in server.
|
|
|
|
For information about the Cyclades-Z card, read
|
|
<file:Documentation/serial/README.cycladesZ>.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called cyclades.
|
|
|
|
If you haven't heard about it, it's safe to say N.
|
|
|
|
config CYZ_INTR
|
|
bool "Cyclades-Z interrupt mode operation (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL && CYCLADES
|
|
help
|
|
The Cyclades-Z family of multiport cards allows 2 (two) driver op
|
|
modes: polling and interrupt. In polling mode, the driver will check
|
|
the status of the Cyclades-Z ports every certain amount of time
|
|
(which is called polling cycle and is configurable). In interrupt
|
|
mode, it will use an interrupt line (IRQ) in order to check the
|
|
status of the Cyclades-Z ports. The default op mode is polling. If
|
|
unsure, say N.
|
|
|
|
config DIGIEPCA
|
|
tristate "Digiboard Intelligent Async Support"
|
|
depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI)
|
|
---help---
|
|
This is a driver for Digi International's Xx, Xeve, and Xem series
|
|
of cards which provide multiple serial ports. You would need
|
|
something like this to connect more than two modems to your Linux
|
|
box, for instance in order to become a dial-in server. This driver
|
|
supports the original PC (ISA) boards as well as PCI, and EISA. If
|
|
you have a card like this, say Y here and read the file
|
|
<file:Documentation/serial/digiepca.txt>.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called epca.
|
|
|
|
config MOXA_INTELLIO
|
|
tristate "Moxa Intellio support"
|
|
depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI)
|
|
select FW_LOADER
|
|
help
|
|
Say Y here if you have a Moxa Intellio multiport serial card.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called moxa.
|
|
|
|
config MOXA_SMARTIO
|
|
tristate "Moxa SmartIO support v. 2.0"
|
|
depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA)
|
|
help
|
|
Say Y here if you have a Moxa SmartIO multiport serial card and/or
|
|
want to help develop a new version of this driver.
|
|
|
|
This is upgraded (1.9.1) driver from original Moxa drivers with
|
|
changes finally resulting in PCI probing.
|
|
|
|
This driver can also be built as a module. The module will be called
|
|
mxser. If you want to do that, say M here.
|
|
|
|
config ISI
|
|
tristate "Multi-Tech multiport card support (EXPERIMENTAL)"
|
|
depends on SERIAL_NONSTANDARD && PCI
|
|
select FW_LOADER
|
|
help
|
|
This is a driver for the Multi-Tech cards which provide several
|
|
serial ports. The driver is experimental and can currently only be
|
|
built as a module. The module will be called isicom.
|
|
If you want to do that, choose M here.
|
|
|
|
config SYNCLINK
|
|
tristate "Microgate SyncLink card support"
|
|
depends on SERIAL_NONSTANDARD && PCI && ISA_DMA_API
|
|
help
|
|
Provides support for the SyncLink ISA and PCI multiprotocol serial
|
|
adapters. These adapters support asynchronous and HDLC bit
|
|
synchronous communication up to 10Mbps (PCI adapter).
|
|
|
|
This driver can only be built as a module ( = code which can be
|
|
inserted in and removed from the running kernel whenever you want).
|
|
The module will be called synclink. If you want to do that, say M
|
|
here.
|
|
|
|
config SYNCLINKMP
|
|
tristate "SyncLink Multiport support"
|
|
depends on SERIAL_NONSTANDARD && PCI
|
|
help
|
|
Enable support for the SyncLink Multiport (2 or 4 ports)
|
|
serial adapter, running asynchronous and HDLC communications up
|
|
to 2.048Mbps. Each ports is independently selectable for
|
|
RS-232, V.35, RS-449, RS-530, and X.21
|
|
|
|
This driver may be built as a module ( = code which can be
|
|
inserted in and removed from the running kernel whenever you want).
|
|
The module will be called synclinkmp. If you want to do that, say M
|
|
here.
|
|
|
|
config SYNCLINK_GT
|
|
tristate "SyncLink GT/AC support"
|
|
depends on SERIAL_NONSTANDARD && PCI
|
|
help
|
|
Support for SyncLink GT and SyncLink AC families of
|
|
synchronous and asynchronous serial adapters
|
|
manufactured by Microgate Systems, Ltd. (www.microgate.com)
|
|
|
|
config N_HDLC
|
|
tristate "HDLC line discipline support"
|
|
depends on SERIAL_NONSTANDARD
|
|
help
|
|
Allows synchronous HDLC communications with tty device drivers that
|
|
support synchronous HDLC such as the Microgate SyncLink adapter.
|
|
|
|
This driver can only be built as a module ( = code which can be
|
|
inserted in and removed from the running kernel whenever you want).
|
|
The module will be called n_hdlc. If you want to do that, say M
|
|
here.
|
|
|
|
config RISCOM8
|
|
tristate "SDL RISCom/8 card support"
|
|
depends on SERIAL_NONSTANDARD
|
|
help
|
|
This is a driver for the SDL Communications RISCom/8 multiport card,
|
|
which gives you many serial ports. You would need something like
|
|
this to connect more than two modems to your Linux box, for instance
|
|
in order to become a dial-in server. If you have a card like that,
|
|
say Y here and read the file <file:Documentation/serial/riscom8.txt>.
|
|
|
|
Also it's possible to say M here and compile this driver as kernel
|
|
loadable module; the module will be called riscom8.
|
|
|
|
config SPECIALIX
|
|
tristate "Specialix IO8+ card support"
|
|
depends on SERIAL_NONSTANDARD
|
|
help
|
|
This is a driver for the Specialix IO8+ multiport card (both the
|
|
ISA and the PCI version) which gives you many serial ports. You
|
|
would need something like this to connect more than two modems to
|
|
your Linux box, for instance in order to become a dial-in server.
|
|
|
|
If you have a card like that, say Y here and read the file
|
|
<file:Documentation/serial/specialix.txt>. Also it's possible to say
|
|
M here and compile this driver as kernel loadable module which will be
|
|
called specialix.
|
|
|
|
config SX
|
|
tristate "Specialix SX (and SI) card support"
|
|
depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) && BROKEN
|
|
help
|
|
This is a driver for the SX and SI multiport serial cards.
|
|
Please read the file <file:Documentation/serial/sx.txt> for details.
|
|
|
|
This driver can only be built as a module ( = code which can be
|
|
inserted in and removed from the running kernel whenever you want).
|
|
The module will be called sx. If you want to do that, say M here.
|
|
|
|
config RIO
|
|
tristate "Specialix RIO system support"
|
|
depends on SERIAL_NONSTANDARD && BROKEN
|
|
help
|
|
This is a driver for the Specialix RIO, a smart serial card which
|
|
drives an outboard box that can support up to 128 ports. Product
|
|
information is at <http://www.perle.com/support/documentation.html#multiport>.
|
|
There are both ISA and PCI versions.
|
|
|
|
config RIO_OLDPCI
|
|
bool "Support really old RIO/PCI cards"
|
|
depends on RIO
|
|
help
|
|
Older RIO PCI cards need some initialization-time configuration to
|
|
determine the IRQ and some control addresses. If you have a RIO and
|
|
this doesn't seem to work, try setting this to Y.
|
|
|
|
config STALDRV
|
|
bool "Stallion multiport serial support"
|
|
depends on SERIAL_NONSTANDARD
|
|
help
|
|
Stallion cards give you many serial ports. You would need something
|
|
like this to connect more than two modems to your Linux box, for
|
|
instance in order to become a dial-in server. If you say Y here,
|
|
you will be asked for your specific card model in the next
|
|
questions. Make sure to read <file:Documentation/serial/stallion.txt>
|
|
in this case. If you have never heard about all this, it's safe to
|
|
say N.
|
|
|
|
config STALLION
|
|
tristate "Stallion EasyIO or EC8/32 support"
|
|
depends on STALDRV && (ISA || EISA || PCI)
|
|
help
|
|
If you have an EasyIO or EasyConnection 8/32 multiport Stallion
|
|
card, then this is for you; say Y. Make sure to read
|
|
<file:Documentation/serial/stallion.txt>.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called stallion.
|
|
|
|
config ISTALLION
|
|
tristate "Stallion EC8/64, ONboard, Brumby support"
|
|
depends on STALDRV && (ISA || EISA || PCI)
|
|
help
|
|
If you have an EasyConnection 8/64, ONboard, Brumby or Stallion
|
|
serial multiport card, say Y here. Make sure to read
|
|
<file:Documentation/serial/stallion.txt>.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called istallion.
|
|
|
|
config NOZOMI
|
|
tristate "HSDPA Broadband Wireless Data Card - Globe Trotter"
|
|
depends on PCI && EXPERIMENTAL
|
|
help
|
|
If you have a HSDPA driver Broadband Wireless Data Card -
|
|
Globe Trotter PCMCIA card, say Y here.
|
|
|
|
To compile this driver as a module, choose M here, the module
|
|
will be called nozomi.
|
|
|
|
config A2232
|
|
tristate "Commodore A2232 serial support (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL && ZORRO && BROKEN
|
|
---help---
|
|
This option supports the 2232 7-port serial card shipped with the
|
|
Amiga 2000 and other Zorro-bus machines, dating from 1989. At
|
|
a max of 19,200 bps, the ports are served by a 6551 ACIA UART chip
|
|
each, plus a 8520 CIA, and a master 6502 CPU and buffer as well. The
|
|
ports were connected with 8 pin DIN connectors on the card bracket,
|
|
for which 8 pin to DB25 adapters were supplied. The card also had
|
|
jumpers internally to toggle various pinning configurations.
|
|
|
|
This driver can be built as a module; but then "generic_serial"
|
|
will also be built as a module. This has to be loaded before
|
|
"ser_a2232". If you want to do this, answer M here.
|
|
|
|
config SGI_SNSC
|
|
bool "SGI Altix system controller communication support"
|
|
depends on (IA64_SGI_SN2 || IA64_GENERIC)
|
|
help
|
|
If you have an SGI Altix and you want to enable system
|
|
controller communication from user space (you want this!),
|
|
say Y. Otherwise, say N.
|
|
|
|
config SGI_TIOCX
|
|
bool "SGI TIO CX driver support"
|
|
depends on (IA64_SGI_SN2 || IA64_GENERIC)
|
|
help
|
|
If you have an SGI Altix and you have fpga devices attached
|
|
to your TIO, say Y here, otherwise say N.
|
|
|
|
config SGI_MBCS
|
|
tristate "SGI FPGA Core Services driver support"
|
|
depends on SGI_TIOCX
|
|
help
|
|
If you have an SGI Altix with an attached SABrick
|
|
say Y or M here, otherwise say N.
|
|
|
|
source "drivers/serial/Kconfig"
|
|
|
|
config UNIX98_PTYS
|
|
bool "Unix98 PTY support" if EMBEDDED
|
|
default y
|
|
---help---
|
|
A pseudo terminal (PTY) is a software device consisting of two
|
|
halves: a master and a slave. The slave device behaves identical to
|
|
a physical terminal; the master device is used by a process to
|
|
read data from and write data to the slave, thereby emulating a
|
|
terminal. Typical programs for the master side are telnet servers
|
|
and xterms.
|
|
|
|
Linux has traditionally used the BSD-like names /dev/ptyxx for
|
|
masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
|
|
has a number of problems. The GNU C library glibc 2.1 and later,
|
|
however, supports the Unix98 naming standard: in order to acquire a
|
|
pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
|
|
terminal is then made available to the process and the pseudo
|
|
terminal slave can be accessed as /dev/pts/<number>. What was
|
|
traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
|
|
|
|
All modern Linux systems use the Unix98 ptys. Say Y unless
|
|
you're on an embedded system and want to conserve memory.
|
|
|
|
config DEVPTS_MULTIPLE_INSTANCES
|
|
bool "Support multiple instances of devpts"
|
|
depends on UNIX98_PTYS
|
|
default n
|
|
---help---
|
|
Enable support for multiple instances of devpts filesystem.
|
|
If you want to have isolated PTY namespaces (eg: in containers),
|
|
say Y here. Otherwise, say N. If enabled, each mount of devpts
|
|
filesystem with the '-o newinstance' option will create an
|
|
independent PTY namespace.
|
|
|
|
config LEGACY_PTYS
|
|
bool "Legacy (BSD) PTY support"
|
|
default y
|
|
---help---
|
|
A pseudo terminal (PTY) is a software device consisting of two
|
|
halves: a master and a slave. The slave device behaves identical to
|
|
a physical terminal; the master device is used by a process to
|
|
read data from and write data to the slave, thereby emulating a
|
|
terminal. Typical programs for the master side are telnet servers
|
|
and xterms.
|
|
|
|
Linux has traditionally used the BSD-like names /dev/ptyxx
|
|
for masters and /dev/ttyxx for slaves of pseudo
|
|
terminals. This scheme has a number of problems, including
|
|
security. This option enables these legacy devices; on most
|
|
systems, it is safe to say N.
|
|
|
|
|
|
config LEGACY_PTY_COUNT
|
|
int "Maximum number of legacy PTY in use"
|
|
depends on LEGACY_PTYS
|
|
range 0 256
|
|
default "256"
|
|
---help---
|
|
The maximum number of legacy PTYs that can be used at any one time.
|
|
The default is 256, and should be more than enough. Embedded
|
|
systems may want to reduce this to save memory.
|
|
|
|
When not in use, each legacy PTY occupies 12 bytes on 32-bit
|
|
architectures and 24 bytes on 64-bit architectures.
|
|
|
|
config BRIQ_PANEL
|
|
tristate 'Total Impact briQ front panel driver'
|
|
depends on PPC_CHRP
|
|
---help---
|
|
The briQ is a small footprint CHRP computer with a frontpanel VFD, a
|
|
tristate led and two switches. It is the size of a CDROM drive.
|
|
|
|
If you have such one and want anything showing on the VFD then you
|
|
must answer Y here.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called briq_panel.
|
|
|
|
It's safe to say N here.
|
|
|
|
config BFIN_OTP
|
|
tristate "Blackfin On-Chip OTP Memory Support"
|
|
depends on BLACKFIN && (BF51x || BF52x || BF54x)
|
|
default y
|
|
help
|
|
If you say Y here, you will get support for a character device
|
|
interface into the One Time Programmable memory pages that are
|
|
stored on the Blackfin processor. This will not get you access
|
|
to the secure memory pages however. You will need to write your
|
|
own secure code and reader for that.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called bfin-otp.
|
|
|
|
If unsure, it is safe to say Y.
|
|
|
|
config BFIN_OTP_WRITE_ENABLE
|
|
bool "Enable writing support of OTP pages"
|
|
depends on BFIN_OTP
|
|
default n
|
|
help
|
|
If you say Y here, you will enable support for writing of the
|
|
OTP pages. This is dangerous by nature as you can only program
|
|
the pages once, so only enable this option when you actually
|
|
need it so as to not inadvertently clobber data.
|
|
|
|
If unsure, say N.
|
|
|
|
config PRINTER
|
|
tristate "Parallel printer support"
|
|
depends on PARPORT
|
|
---help---
|
|
If you intend to attach a printer to the parallel port of your Linux
|
|
box (as opposed to using a serial printer; if the connector at the
|
|
printer has 9 or 25 holes ["female"], then it's serial), say Y.
|
|
Also read the Printing-HOWTO, available from
|
|
<http://www.tldp.org/docs.html#howto>.
|
|
|
|
It is possible to share one parallel port among several devices
|
|
(e.g. printer and ZIP drive) and it is safe to compile the
|
|
corresponding drivers into the kernel.
|
|
|
|
To compile this driver as a module, choose M here and read
|
|
<file:Documentation/parport.txt>. The module will be called lp.
|
|
|
|
If you have several parallel ports, you can specify which ports to
|
|
use with the "lp" kernel command line option. (Try "man bootparam"
|
|
or see the documentation of your boot loader (lilo or loadlin) about
|
|
how to pass options to the kernel at boot time.) The syntax of the
|
|
"lp" command line option can be found in <file:drivers/char/lp.c>.
|
|
|
|
If you have more than 8 printers, you need to increase the LP_NO
|
|
macro in lp.c and the PARPORT_MAX macro in parport.h.
|
|
|
|
config LP_CONSOLE
|
|
bool "Support for console on line printer"
|
|
depends on PRINTER
|
|
---help---
|
|
If you want kernel messages to be printed out as they occur, you
|
|
can have a console on the printer. This option adds support for
|
|
doing that; to actually get it to happen you need to pass the
|
|
option "console=lp0" to the kernel at boot time.
|
|
|
|
If the printer is out of paper (or off, or unplugged, or too
|
|
busy..) the kernel will stall until the printer is ready again.
|
|
By defining CONSOLE_LP_STRICT to 0 (at your own risk) you
|
|
can make the kernel continue when this happens,
|
|
but it'll lose the kernel messages.
|
|
|
|
If unsure, say N.
|
|
|
|
config PPDEV
|
|
tristate "Support for user-space parallel port device drivers"
|
|
depends on PARPORT
|
|
---help---
|
|
Saying Y to this adds support for /dev/parport device nodes. This
|
|
is needed for programs that want portable access to the parallel
|
|
port, for instance deviceid (which displays Plug-and-Play device
|
|
IDs).
|
|
|
|
This is the parallel port equivalent of SCSI generic support (sg).
|
|
It is safe to say N to this -- it is not needed for normal printing
|
|
or parallel port CD-ROM/disk support.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called ppdev.
|
|
|
|
If unsure, say N.
|
|
|
|
config HVC_DRIVER
|
|
bool
|
|
help
|
|
Generic "hypervisor virtual console" infrastructure for various
|
|
hypervisors (pSeries, iSeries, Xen, lguest).
|
|
It will automatically be selected if one of the back-end console drivers
|
|
is selected.
|
|
|
|
config HVC_IRQ
|
|
bool
|
|
|
|
config HVC_CONSOLE
|
|
bool "pSeries Hypervisor Virtual Console support"
|
|
depends on PPC_PSERIES
|
|
select HVC_DRIVER
|
|
select HVC_IRQ
|
|
help
|
|
pSeries machines when partitioned support a hypervisor virtual
|
|
console. This driver allows each pSeries partition to have a console
|
|
which is accessed via the HMC.
|
|
|
|
config HVC_ISERIES
|
|
bool "iSeries Hypervisor Virtual Console support"
|
|
depends on PPC_ISERIES
|
|
default y
|
|
select HVC_DRIVER
|
|
select HVC_IRQ
|
|
select VIOPATH
|
|
help
|
|
iSeries machines support a hypervisor virtual console.
|
|
|
|
config HVC_RTAS
|
|
bool "IBM RTAS Console support"
|
|
depends on PPC_RTAS
|
|
select HVC_DRIVER
|
|
help
|
|
IBM Console device driver which makes use of RTAS
|
|
|
|
config HVC_BEAT
|
|
bool "Toshiba's Beat Hypervisor Console support"
|
|
depends on PPC_CELLEB
|
|
select HVC_DRIVER
|
|
help
|
|
Toshiba's Cell Reference Set Beat Console device driver
|
|
|
|
config HVC_IUCV
|
|
bool "z/VM IUCV Hypervisor console support (VM only)"
|
|
depends on S390
|
|
select HVC_DRIVER
|
|
select IUCV
|
|
default y
|
|
help
|
|
This driver provides a Hypervisor console (HVC) back-end to access
|
|
a Linux (console) terminal via a z/VM IUCV communication path.
|
|
|
|
config HVC_XEN
|
|
bool "Xen Hypervisor Console support"
|
|
depends on XEN
|
|
select HVC_DRIVER
|
|
select HVC_IRQ
|
|
default y
|
|
help
|
|
Xen virtual console device driver
|
|
|
|
config HVC_UDBG
|
|
bool "udbg based fake hypervisor console"
|
|
depends on PPC && EXPERIMENTAL
|
|
select HVC_DRIVER
|
|
default n
|
|
|
|
config VIRTIO_CONSOLE
|
|
tristate "Virtio console"
|
|
depends on VIRTIO
|
|
select HVC_DRIVER
|
|
help
|
|
Virtio console for use with lguest and other hypervisors.
|
|
|
|
Also serves as a general-purpose serial device for data
|
|
transfer between the guest and host. Character devices at
|
|
/dev/vportNpn will be created when corresponding ports are
|
|
found, where N is the device number and n is the port number
|
|
within that device. If specified by the host, a sysfs
|
|
attribute called 'name' will be populated with a name for
|
|
the port which can be used by udev scripts to create a
|
|
symlink to the device.
|
|
|
|
config HVCS
|
|
tristate "IBM Hypervisor Virtual Console Server support"
|
|
depends on PPC_PSERIES && HVC_CONSOLE
|
|
help
|
|
Partitionable IBM Power5 ppc64 machines allow hosting of
|
|
firmware virtual consoles from one Linux partition by
|
|
another Linux partition. This driver allows console data
|
|
from Linux partitions to be accessed through TTY device
|
|
interfaces in the device tree of a Linux partition running
|
|
this driver.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called hvcs. Additionally, this module
|
|
will depend on arch specific APIs exported from hvcserver.ko
|
|
which will also be compiled when this driver is built as a
|
|
module.
|
|
|
|
config IBM_BSR
|
|
tristate "IBM POWER Barrier Synchronization Register support"
|
|
depends on PPC_PSERIES
|
|
help
|
|
This devices exposes a hardware mechanism for fast synchronization
|
|
of threads across a large system which avoids bouncing a cacheline
|
|
between several cores on a system
|
|
|
|
source "drivers/char/ipmi/Kconfig"
|
|
|
|
config DS1620
|
|
tristate "NetWinder thermometer support"
|
|
depends on ARCH_NETWINDER
|
|
help
|
|
Say Y here to include support for the thermal management hardware
|
|
found in the NetWinder. This driver allows the user to control the
|
|
temperature set points and to read the current temperature.
|
|
|
|
It is also possible to say M here to build it as a module (ds1620)
|
|
It is recommended to be used on a NetWinder, but it is not a
|
|
necessity.
|
|
|
|
config NWBUTTON
|
|
tristate "NetWinder Button"
|
|
depends on ARCH_NETWINDER
|
|
---help---
|
|
If you say Y here and create a character device node /dev/nwbutton
|
|
with major and minor numbers 10 and 158 ("man mknod"), then every
|
|
time the orange button is pressed a number of times, the number of
|
|
times the button was pressed will be written to that device.
|
|
|
|
This is most useful for applications, as yet unwritten, which
|
|
perform actions based on how many times the button is pressed in a
|
|
row.
|
|
|
|
Do not hold the button down for too long, as the driver does not
|
|
alter the behaviour of the hardware reset circuitry attached to the
|
|
button; it will still execute a hard reset if the button is held
|
|
down for longer than approximately five seconds.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called nwbutton.
|
|
|
|
Most people will answer Y to this question and "Reboot Using Button"
|
|
below to be able to initiate a system shutdown from the button.
|
|
|
|
config NWBUTTON_REBOOT
|
|
bool "Reboot Using Button"
|
|
depends on NWBUTTON
|
|
help
|
|
If you say Y here, then you will be able to initiate a system
|
|
shutdown and reboot by pressing the orange button a number of times.
|
|
The number of presses to initiate the shutdown is two by default,
|
|
but this can be altered by modifying the value of NUM_PRESSES_REBOOT
|
|
in nwbutton.h and recompiling the driver or, if you compile the
|
|
driver as a module, you can specify the number of presses at load
|
|
time with "insmod button reboot_count=<something>".
|
|
|
|
config NWFLASH
|
|
tristate "NetWinder flash support"
|
|
depends on ARCH_NETWINDER
|
|
---help---
|
|
If you say Y here and create a character device /dev/flash with
|
|
major 10 and minor 160 you can manipulate the flash ROM containing
|
|
the NetWinder firmware. Be careful as accidentally overwriting the
|
|
flash contents can render your computer unbootable. On no account
|
|
allow random users access to this device. :-)
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called nwflash.
|
|
|
|
If you're not sure, say N.
|
|
|
|
source "drivers/char/hw_random/Kconfig"
|
|
|
|
config NVRAM
|
|
tristate "/dev/nvram support"
|
|
depends on ATARI || X86 || (ARM && RTC_DRV_CMOS) || GENERIC_NVRAM
|
|
---help---
|
|
If you say Y here and create a character special file /dev/nvram
|
|
with major number 10 and minor number 144 using mknod ("man mknod"),
|
|
you get read and write access to the extra bytes of non-volatile
|
|
memory in the real time clock (RTC), which is contained in every PC
|
|
and most Ataris. The actual number of bytes varies, depending on the
|
|
nvram in the system, but is usually 114 (128-14 for the RTC).
|
|
|
|
This memory is conventionally called "CMOS RAM" on PCs and "NVRAM"
|
|
on Ataris. /dev/nvram may be used to view settings there, or to
|
|
change them (with some utility). It could also be used to frequently
|
|
save a few bits of very important data that may not be lost over
|
|
power-off and for which writing to disk is too insecure. Note
|
|
however that most NVRAM space in a PC belongs to the BIOS and you
|
|
should NEVER idly tamper with it. See Ralf Brown's interrupt list
|
|
for a guide to the use of CMOS bytes by your BIOS.
|
|
|
|
On Atari machines, /dev/nvram is always configured and does not need
|
|
to be selected.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called nvram.
|
|
|
|
#
|
|
# These legacy RTC drivers just cause too many conflicts with the generic
|
|
# RTC framework ... let's not even try to coexist any more.
|
|
#
|
|
if RTC_LIB=n
|
|
|
|
config RTC
|
|
tristate "Enhanced Real Time Clock Support (legacy PC RTC driver)"
|
|
depends on !PPC && !PARISC && !IA64 && !M68K && !SPARC && !FRV \
|
|
&& !ARM && !SUPERH && !S390 && !AVR32 && !BLACKFIN
|
|
---help---
|
|
If you say Y here and create a character special file /dev/rtc with
|
|
major number 10 and minor number 135 using mknod ("man mknod"), you
|
|
will get access to the real time clock (or hardware clock) built
|
|
into your computer.
|
|
|
|
Every PC has such a clock built in. It can be used to generate
|
|
signals from as low as 1Hz up to 8192Hz, and can also be used
|
|
as a 24 hour alarm. It reports status information via the file
|
|
/proc/driver/rtc and its behaviour is set by various ioctls on
|
|
/dev/rtc.
|
|
|
|
If you run Linux on a multiprocessor machine and said Y to
|
|
"Symmetric Multi Processing" above, you should say Y here to read
|
|
and set the RTC in an SMP compatible fashion.
|
|
|
|
If you think you have a use for such a device (such as periodic data
|
|
sampling), then say Y here, and read <file:Documentation/rtc.txt>
|
|
for details.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called rtc.
|
|
|
|
config JS_RTC
|
|
tristate "Enhanced Real Time Clock Support"
|
|
depends on SPARC32 && PCI
|
|
---help---
|
|
If you say Y here and create a character special file /dev/rtc with
|
|
major number 10 and minor number 135 using mknod ("man mknod"), you
|
|
will get access to the real time clock (or hardware clock) built
|
|
into your computer.
|
|
|
|
Every PC has such a clock built in. It can be used to generate
|
|
signals from as low as 1Hz up to 8192Hz, and can also be used
|
|
as a 24 hour alarm. It reports status information via the file
|
|
/proc/driver/rtc and its behaviour is set by various ioctls on
|
|
/dev/rtc.
|
|
|
|
If you think you have a use for such a device (such as periodic data
|
|
sampling), then say Y here, and read <file:Documentation/rtc.txt>
|
|
for details.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called js-rtc.
|
|
|
|
config GEN_RTC
|
|
tristate "Generic /dev/rtc emulation"
|
|
depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32 && !BLACKFIN
|
|
---help---
|
|
If you say Y here and create a character special file /dev/rtc with
|
|
major number 10 and minor number 135 using mknod ("man mknod"), you
|
|
will get access to the real time clock (or hardware clock) built
|
|
into your computer.
|
|
|
|
It reports status information via the file /proc/driver/rtc and its
|
|
behaviour is set by various ioctls on /dev/rtc. If you enable the
|
|
"extended RTC operation" below it will also provide an emulation
|
|
for RTC_UIE which is required by some programs and may improve
|
|
precision in some cases.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called genrtc.
|
|
|
|
config GEN_RTC_X
|
|
bool "Extended RTC operation"
|
|
depends on GEN_RTC
|
|
help
|
|
Provides an emulation for RTC_UIE which is required by some programs
|
|
and may improve precision of the generic RTC support in some cases.
|
|
|
|
config EFI_RTC
|
|
bool "EFI Real Time Clock Services"
|
|
depends on IA64
|
|
|
|
config DS1302
|
|
tristate "DS1302 RTC support"
|
|
depends on M32R && (PLAT_M32700UT || PLAT_OPSPUT)
|
|
help
|
|
If you say Y here and create a character special file /dev/rtc with
|
|
major number 121 and minor number 0 using mknod ("man mknod"), you
|
|
will get access to the real time clock (or hardware clock) built
|
|
into your computer.
|
|
|
|
endif # RTC_LIB
|
|
|
|
config DTLK
|
|
tristate "Double Talk PC internal speech card support"
|
|
depends on ISA
|
|
help
|
|
This driver is for the DoubleTalk PC, a speech synthesizer
|
|
manufactured by RC Systems (<http://www.rcsys.com/>). It is also
|
|
called the `internal DoubleTalk'.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called dtlk.
|
|
|
|
config XILINX_HWICAP
|
|
tristate "Xilinx HWICAP Support"
|
|
depends on XILINX_VIRTEX || MICROBLAZE
|
|
help
|
|
This option enables support for Xilinx Internal Configuration
|
|
Access Port (ICAP) driver. The ICAP is used on Xilinx Virtex
|
|
FPGA platforms to partially reconfigure the FPGA at runtime.
|
|
|
|
If unsure, say N.
|
|
|
|
config R3964
|
|
tristate "Siemens R3964 line discipline"
|
|
---help---
|
|
This driver allows synchronous communication with devices using the
|
|
Siemens R3964 packet protocol. Unless you are dealing with special
|
|
hardware like PLCs, you are unlikely to need this.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called n_r3964.
|
|
|
|
If unsure, say N.
|
|
|
|
config APPLICOM
|
|
tristate "Applicom intelligent fieldbus card support"
|
|
depends on PCI
|
|
---help---
|
|
This driver provides the kernel-side support for the intelligent
|
|
fieldbus cards made by Applicom International. More information
|
|
about these cards can be found on the WWW at the address
|
|
<http://www.applicom-int.com/>, or by email from David Woodhouse
|
|
<dwmw2@infradead.org>.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called applicom.
|
|
|
|
If unsure, say N.
|
|
|
|
config SONYPI
|
|
tristate "Sony Vaio Programmable I/O Control Device support (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL && X86 && PCI && INPUT && !64BIT
|
|
---help---
|
|
This driver enables access to the Sony Programmable I/O Control
|
|
Device which can be found in many (all ?) Sony Vaio laptops.
|
|
|
|
If you have one of those laptops, read
|
|
<file:Documentation/laptops/sonypi.txt>, and say Y or M here.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called sonypi.
|
|
|
|
config GPIO_TB0219
|
|
tristate "TANBAC TB0219 GPIO support"
|
|
depends on TANBAC_TB022X
|
|
select GPIO_VR41XX
|
|
|
|
source "drivers/char/pcmcia/Kconfig"
|
|
|
|
config MWAVE
|
|
tristate "ACP Modem (Mwave) support"
|
|
depends on X86
|
|
select SERIAL_8250
|
|
---help---
|
|
The ACP modem (Mwave) for Linux is a WinModem. It is composed of a
|
|
kernel driver and a user level application. Together these components
|
|
support direct attachment to public switched telephone networks (PSTNs)
|
|
and support selected world wide countries.
|
|
|
|
This version of the ACP Modem driver supports the IBM Thinkpad 600E,
|
|
600, and 770 that include on board ACP modem hardware.
|
|
|
|
The modem also supports the standard communications port interface
|
|
(ttySx) and is compatible with the Hayes AT Command Set.
|
|
|
|
The user level application needed to use this driver can be found at
|
|
the IBM Linux Technology Center (LTC) web site:
|
|
<http://www.ibm.com/linux/ltc/>.
|
|
|
|
If you own one of the above IBM Thinkpads which has the Mwave chipset
|
|
in it, say Y.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called mwave.
|
|
|
|
config SCx200_GPIO
|
|
tristate "NatSemi SCx200 GPIO Support"
|
|
depends on SCx200
|
|
select NSC_GPIO
|
|
help
|
|
Give userspace access to the GPIO pins on the National
|
|
Semiconductor SCx200 processors.
|
|
|
|
If compiled as a module, it will be called scx200_gpio.
|
|
|
|
config PC8736x_GPIO
|
|
tristate "NatSemi PC8736x GPIO Support"
|
|
depends on X86
|
|
default SCx200_GPIO # mostly N
|
|
select NSC_GPIO # needed for support routines
|
|
help
|
|
Give userspace access to the GPIO pins on the National
|
|
Semiconductor PC-8736x (x=[03456]) SuperIO chip. The chip
|
|
has multiple functional units, inc several managed by
|
|
hwmon/pc87360 driver. Tested with PC-87366
|
|
|
|
If compiled as a module, it will be called pc8736x_gpio.
|
|
|
|
config NSC_GPIO
|
|
tristate "NatSemi Base GPIO Support"
|
|
depends on X86_32
|
|
# selected by SCx200_GPIO and PC8736x_GPIO
|
|
# what about 2 selectors differing: m != y
|
|
help
|
|
Common support used (and needed) by scx200_gpio and
|
|
pc8736x_gpio drivers. If those drivers are built as
|
|
modules, this one will be too, named nsc_gpio
|
|
|
|
config CS5535_GPIO
|
|
tristate "AMD CS5535/CS5536 GPIO (Geode Companion Device)"
|
|
depends on X86_32
|
|
help
|
|
Give userspace access to the GPIO pins on the AMD CS5535 and
|
|
CS5536 Geode companion devices.
|
|
|
|
If compiled as a module, it will be called cs5535_gpio.
|
|
|
|
config RAW_DRIVER
|
|
tristate "RAW driver (/dev/raw/rawN)"
|
|
depends on BLOCK
|
|
help
|
|
The raw driver permits block devices to be bound to /dev/raw/rawN.
|
|
Once bound, I/O against /dev/raw/rawN uses efficient zero-copy I/O.
|
|
See the raw(8) manpage for more details.
|
|
|
|
Applications should preferably open the device (eg /dev/hda1)
|
|
with the O_DIRECT flag.
|
|
|
|
config MAX_RAW_DEVS
|
|
int "Maximum number of RAW devices to support (1-8192)"
|
|
depends on RAW_DRIVER
|
|
default "256"
|
|
help
|
|
The maximum number of RAW devices that are supported.
|
|
Default is 256. Increase this number in case you need lots of
|
|
raw devices.
|
|
|
|
config HPET
|
|
bool "HPET - High Precision Event Timer" if (X86 || IA64)
|
|
default n
|
|
depends on ACPI
|
|
help
|
|
If you say Y here, you will have a miscdevice named "/dev/hpet/". Each
|
|
open selects one of the timers supported by the HPET. The timers are
|
|
non-periodic and/or periodic.
|
|
|
|
config HPET_MMAP
|
|
bool "Allow mmap of HPET"
|
|
default y
|
|
depends on HPET
|
|
help
|
|
If you say Y here, user applications will be able to mmap
|
|
the HPET registers.
|
|
|
|
In some hardware implementations, the page containing HPET
|
|
registers may also contain other things that shouldn't be
|
|
exposed to the user. If this applies to your hardware,
|
|
say N here.
|
|
|
|
config HANGCHECK_TIMER
|
|
tristate "Hangcheck timer"
|
|
depends on X86 || IA64 || PPC64 || S390
|
|
help
|
|
The hangcheck-timer module detects when the system has gone
|
|
out to lunch past a certain margin. It can reboot the system
|
|
or merely print a warning.
|
|
|
|
config MMTIMER
|
|
tristate "MMTIMER Memory mapped RTC for SGI Altix"
|
|
depends on IA64_GENERIC || IA64_SGI_SN2
|
|
default y
|
|
help
|
|
The mmtimer device allows direct userspace access to the
|
|
Altix system timer.
|
|
|
|
config UV_MMTIMER
|
|
tristate "UV_MMTIMER Memory mapped RTC for SGI UV"
|
|
depends on X86_UV
|
|
default m
|
|
help
|
|
The uv_mmtimer device allows direct userspace access to the
|
|
UV system timer.
|
|
|
|
source "drivers/char/tpm/Kconfig"
|
|
|
|
config TELCLOCK
|
|
tristate "Telecom clock driver for ATCA SBC"
|
|
depends on EXPERIMENTAL && X86
|
|
default n
|
|
help
|
|
The telecom clock device is specific to the MPCBL0010 and MPCBL0050
|
|
ATCA computers and allows direct userspace access to the
|
|
configuration of the telecom clock configuration settings. This
|
|
device is used for hardware synchronization across the ATCA backplane
|
|
fabric. Upon loading, the driver exports a sysfs directory,
|
|
/sys/devices/platform/telco_clock, with a number of files for
|
|
controlling the behavior of this hardware.
|
|
|
|
config DEVPORT
|
|
bool
|
|
depends on !M68K
|
|
depends on ISA || PCI
|
|
default y
|
|
|
|
source "drivers/s390/char/Kconfig"
|
|
|
|
endmenu
|
|
|