kconfig

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#
# Serial device configuration
#
# $Id: Kconfig,v 1.11 2004/03/11 18:08:04 lethal Exp $
#

menu "Serial drivers"
	depends on HAS_IOMEM

#
# The new 8250/16550 serial drivers
config SERIAL_8250
	tristate "8250/16550 and compatible serial support"
	depends on (BROKEN || !SPARC)
	select SERIAL_CORE
	---help---
	  This selects whether you want to include the driver for the standard
	  serial ports.  The standard answer is Y.  People who might say N
	  here are those that are setting up dedicated Ethernet WWW/FTP
	  servers, or users that have one of the various bus mice instead of a
	  serial mouse and don't intend to use their machine's standard serial
	  port for anything.  (Note that the Cyclades and Stallion multi
	  serial port drivers do not need this driver built in for them to
	  work.)

	  To compile this driver as a module, choose M here: the
	  module will be called 8250.
	  [WARNING: Do not compile this driver as a module if you are using
	  non-standard serial ports, since the configuration information will
	  be lost when the driver is unloaded.  This limitation may be lifted
	  in the future.]

	  BTW1: If you have a mouseman serial mouse which is not recognized by
	  the X window system, try running gpm first.

	  BTW2: If you intend to use a software modem (also called Winmodem)
	  under Linux, forget it.  These modems are crippled and require
	  proprietary drivers which are only available under Windows.

	  Most people will say Y or M here, so that they can use serial mice,
	  modems and similar devices connecting to the standard serial ports.

config SERIAL_8250_CONSOLE
	bool "Console on 8250/16550 and compatible serial port"
	depends on SERIAL_8250=y
	select SERIAL_CORE_CONSOLE
	---help---
	  If you say Y here, it will be possible to use a serial port as the
	  system console (the system console is the device which receives all
	  kernel messages and warnings and which allows logins in single user
	  mode). This could be useful if some terminal or printer is connected
	  to that serial port.

	  Even if you say Y here, the currently visible virtual console
	  (/dev/tty0) will still be used as the system console by default, but
	  you can alter that using a kernel command line option such as
	  "console=ttyS1". (Try "man bootparam" or see the documentation of
	  your boot loader (grub or lilo or loadlin) about how to pass options
	  to the kernel at boot time.)

	  If you don't have a VGA card installed and you say Y here, the
	  kernel will automatically use the first serial line, /dev/ttyS0, as
	  system console.

	  You can set that using a kernel command line option such as
	  "console=uart8250,io,0x3f8,9600n8"
	  "console=uart8250,mmio,0xff5e0000,115200n8".
	  and it will switch to normal serial console when the corresponding 
	  port is ready.
	  "earlycon=uart8250,io,0x3f8,9600n8"
	  "earlycon=uart8250,mmio,0xff5e0000,115200n8".
	  it will not only setup early console.

	  If unsure, say N.

config FIX_EARLYCON_MEM
	bool
	depends on X86
	default y

config SERIAL_8250_GSC
	tristate
	depends on SERIAL_8250 && GSC
	default SERIAL_8250

config SERIAL_8250_PCI
	tristate "8250/16550 PCI device support" if EMBEDDED
	depends on SERIAL_8250 && PCI
	default SERIAL_8250
	help
	  This builds standard PCI serial support. You may be able to
	  disable this feature if you only need legacy serial support.
	  Saves about 9K.

config SERIAL_8250_PNP
	tristate "8250/16550 PNP device support" if EMBEDDED
	depends on SERIAL_8250 && PNP
	default SERIAL_8250
	help
	  This builds standard PNP serial support. You may be able to
	  disable this feature if you only need legacy serial support.

config SERIAL_8250_HP300
	tristate
	depends on SERIAL_8250 && HP300
	default SERIAL_8250

config SERIAL_8250_CS
	tristate "8250/16550 PCMCIA device support"
	depends on PCMCIA && SERIAL_8250
	---help---
	  Say Y here to enable support for 16-bit PCMCIA serial devices,
	  including serial port cards, modems, and the modem functions of
	  multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are
	  credit-card size devices often used with laptops.)

	  To compile this driver as a module, choose M here: the
	  module will be called serial_cs.

	  If unsure, say N.

config SERIAL_8250_NR_UARTS
	int "Maximum number of 8250/16550 serial ports"
	depends on SERIAL_8250
	default "4"
	help
	  Set this to the number of serial ports you want the driver
	  to support.  This includes any ports discovered via ACPI or
	  PCI enumeration and any ports that may be added at run-time
	  via hot-plug, or any ISA multi-port serial cards.

config SERIAL_8250_RUNTIME_UARTS
	int "Number of 8250/16550 serial ports to register at runtime"
	depends on SERIAL_8250
	range 0 SERIAL_8250_NR_UARTS
	default "4"
	help
	  Set this to the maximum number of serial ports you want
	  the kernel to register at boot time.  This can be overridden
	  with the module parameter "nr_uarts", or boot-time parameter
	  8250.nr_uarts

config SERIAL_8250_EXTENDED
	bool "Extended 8250/16550 serial driver options"
	depends on SERIAL_8250
	help
	  If you wish to use any non-standard features of the standard "dumb"
	  driver, say Y here. This includes HUB6 support, shared serial
	  interrupts, special multiport support, support for more than the
	  four COM 1/2/3/4 boards, etc.

	  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 serial driver options. If unsure, say N.

config SERIAL_8250_MANY_PORTS
	bool "Support more than 4 legacy serial ports"
	depends on SERIAL_8250_EXTENDED && !IA64
	help
	  Say Y here if you have dumb serial boards other than the four
	  standard COM 1/2/3/4 ports. This may happen if you have an AST
	  FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available
	  from <http://www.tldp.org/docs.html#howto>), or other custom
	  serial port hardware which acts similar to standard serial port
	  hardware. If you only use the standard COM 1/2/3/4 ports, you can
	  say N here to save some memory. You can also say Y if you have an
	  "intelligent" multiport card such as Cyclades, Digiboards, etc.

#
# Multi-port serial cards
#

config SERIAL_8250_FOURPORT
	tristate "Support Fourport cards"
	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
	help
	  Say Y here if you have an AST FourPort serial board.

	  To compile this driver as a module, choose M here: the module
	  will be called 8250_fourport.

config SERIAL_8250_ACCENT
	tristate "Support Accent cards"
	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
	help
	  Say Y here if you have an Accent Async serial board.

	  To compile this driver as a module, choose M here: the module
	  will be called 8250_accent.

config SERIAL_8250_BOCA
	tristate "Support Boca cards"
	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
	help
	  Say Y here if you have a Boca serial board.  Please read the Boca
	  mini-HOWTO, available from <http://www.tldp.org/docs.html#howto>

	  To compile this driver as a module, choose M here: the module
	  will be called 8250_boca.

config SERIAL_8250_EXAR_ST16C554
	tristate "Support Exar ST16C554/554D Quad UART"
	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
	help
	  The Uplogix Envoy TU301 uses this Exar Quad UART.  If you are
	  tinkering with your Envoy TU301, or have a machine with this UART,
	  say Y here.

	  To compile this driver as a module, choose M here: the module
	  will be called 8250_exar_st16c554.

config SERIAL_8250_HUB6
	tristate "Support Hub6 cards"
	depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
	help
	  Say Y here if you have a HUB6 serial board.

	  To compile this driver as a module, choose M here: the module
	  will be called 8250_hub6.

config SERIAL_8250_SHARE_IRQ
	bool "Support for sharing serial interrupts"
	depends on SERIAL_8250_EXTENDED
	help
	  Some serial boards have hardware support which allows multiple dumb
	  serial ports on the same board to share a single IRQ. To enable
	  support for this in the serial driver, say Y here.

config SERIAL_8250_DETECT_IRQ
	bool "Autodetect IRQ on standard ports (unsafe)"
	depends on SERIAL_8250_EXTENDED
	help
	  Say Y here if you want the kernel to try to guess which IRQ
	  to use for your serial port.

	  This is considered unsafe; it is far better to configure the IRQ in
	  a boot script using the setserial command.

	  If unsure, say N.

config SERIAL_8250_RSA
	bool "Support RSA serial ports"
	depends on SERIAL_8250_EXTENDED
	help
	  ::: To be written :::

config SERIAL_8250_MCA
	tristate "Support 8250-type ports on MCA buses"
	depends on SERIAL_8250 != n && MCA
	help
	  Say Y here if you have a MCA serial ports.

	  To compile this driver as a module, choose M here: the module
	  will be called 8250_mca.

config SERIAL_8250_ACORN
	tristate "Acorn expansion card serial port support"
	depends on ARCH_ACORN && SERIAL_8250
	help
	  If you have an Atomwide Serial card or Serial Port card for an Acorn
	  system, say Y to this option.  The driver can handle 1, 2, or 3 port
	  cards.  If unsure, say N.

config SERIAL_8250_AU1X00
	bool "AU1X00 serial port support"
	depends on SERIAL_8250 != n && SOC_AU1X00
	help
	  If you have an Au1x00 board and want to use the serial port, say Y
	  to this option.  The driver can handle 1 or 2 serial ports.
	  If unsure, say N.

config SERIAL_8250_RM9K
	bool "Support for MIPS RM9xxx integrated serial port"
	depends on SERIAL_8250 != n && SERIAL_RM9000
	select SERIAL_8250_SHARE_IRQ
	help
	  Selecting this option will add support for the integrated serial
	  port hardware found on MIPS RM9122 and similar processors.
	  If unsure, say N.

comment "Non-8250 serial port support"

config SERIAL_AMBA_PL010
	tristate "ARM AMBA PL010 serial port support"
	depends on ARM_AMBA && (BROKEN || !ARCH_VERSATILE)
	select SERIAL_CORE
	help
	  This selects the ARM(R) AMBA(R) PrimeCell PL010 UART.  If you have
	  an Integrator/AP or Integrator/PP2 platform, or if you have a
	  Cirrus Logic EP93xx CPU, say Y or M here.

	  If unsure, say N.

config SERIAL_AMBA_PL010_CONSOLE
	bool "Support for console on AMBA serial port"
	depends on SERIAL_AMBA_PL010=y
	select SERIAL_CORE_CONSOLE
	---help---
	  Say Y here if you wish to use an AMBA PrimeCell UART as the system
	  console (the system console is the device which receives all kernel
	  messages and warnings and which allows logins in single user mode).

	  Even if you say Y here, the currently visible framebuffer console
	  (/dev/tty0) will still be used as the system console by default, but
	  you can alter that using a kernel command line option such as
	  "console=ttyAM0". (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.)

config SERIAL_AMBA_PL011
	tristate "ARM AMBA PL011 serial port support"
	depends on ARM_AMBA
	select SERIAL_CORE
	help
	  This selects the ARM(R) AMBA(R) PrimeCell PL011 UART.  If you have
	  an Integrator/PP2, Integrator/CP or Versatile platform, say Y or M
	  here.

	  If unsure, say N.

config SERIAL_AMBA_PL011_CONSOLE
	bool "Support for console on AMBA serial port"
	depends on SERIAL_AMBA_PL011=y
	select SERIAL_CORE_CONSOLE
	---help---
	  Say Y here if you wish to use an AMBA PrimeCell UART as the system
	  console (the system console is the device which receives all kernel
	  messages and warnings and which allows logins in single user mode).

	  Even if you say Y here, the currently visible framebuffer console
	  (/dev/tty0) will still be used as the system console by default, but
	  you can alter that using a kernel command line option such as
	  "console=ttyAMA0". (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.)

config SERIAL_SB1250_DUART
	tristate "BCM1xxx on-chip DUART serial support"
	depends on SIBYTE_SB1xxx_SOC=y
	select SERIAL_CORE
	default y
	---help---
	  Support for the asynchronous serial interface (DUART) included in
	  the BCM1250 and derived System-On-a-Chip (SOC) devices.  Note that
	  the letter D in DUART stands for "dual", which is how the device
	  is implemented.  Depending on the SOC configuration there may be
	  one or more DUARTs available of which all are handled.

	  If unsure, say Y.  To compile this driver as a module, choose M here:
	  the module will be called sb1250-duart.

config SERIAL_SB1250_DUART_CONSOLE
	bool "Support for console on a BCM1xxx DUART serial port"
	depends on SERIAL_SB1250_DUART=y
	select SERIAL_CORE_CONSOLE
	default y
	---help---
	  If you say Y here, it will be possible to use a serial port as the
	  system console (the system console is the device which receives all
	  kernel messages and warnings and which allows logins in single user
	  mode).

	  If unsure, say Y.

config SERIAL_ATMEL
	bool "AT91 / AT32 on-chip serial port support"
	depends on (ARM && ARCH_AT91) || AVR32
	select SERIAL_CORE
	help
	  This enables the driver for the on-chip UARTs of the Atmel
	  AT91 and AT32 processors.

config SERIAL_ATMEL_CONSOLE
	bool "Support for console on AT91 / AT32 serial port"
	depends on SERIAL_ATMEL=y
	select SERIAL_CORE_CONSOLE
	help
	  Say Y here if you wish to use an on-chip UART on a Atmel
	  AT91 or AT32 processor as the system console (the system
	  console is the device which receives all kernel messages and
	  warnings and which allows logins in single user mode).

config SERIAL_ATMEL_TTYAT
	bool "Install as device ttyATn instead of ttySn"
	depends on SERIAL_ATMEL=y
	help
	  Say Y here if you wish to have the internal AT91 / AT32 UARTs
	  appear as /dev/ttyATn (major 204, minor starting at 154)
	  instead of the normal /dev/ttySn (major 4, minor starting at
	  64). This is necessary if you also want other UARTs, such as
	  external 8250/16C550 compatible UARTs.
	  The ttySn nodes are legally reserved for the 8250 serial driver
	  but are often misused by other serial drivers.

	  To use this, you should create suitable ttyATn device nodes in
	  /dev/, and pass "console=ttyATn" to the kernel.

	  Say Y if you have an external 8250/16C550 UART.  If unsure, say N.

config SERIAL_KS8695
	bool "Micrel KS8695 (Centaur) serial port support"
	depends on ARCH_KS8695
	select SERIAL_CORE
	help
	  This selects the Micrel Centaur KS8695 UART.  Say Y here.

config SERIAL_KS8695_CONSOLE
	bool "Support for console on KS8695 (Centaur) serial port"
	depends on SERIAL_KS8695=y
	select SERIAL_CORE_CONSOLE
	help
	  Say Y here if you wish to use a KS8695 (Centaur) UART as the
	  system console (the system console is the device which
	  receives all kernel messages and warnings and which allows
	  logins in single user mode).

config SERIAL_CLPS711X
	tristate "CLPS711X serial port support"
	depends on ARM && ARCH_CLPS711X
	select SERIAL_CORE
	help
	  ::: To be written :::

config SERIAL_CLPS711X_CONSOLE
	bool "Support for console on CLPS711X serial port"
	depends on SERIAL_CLPS711X=y
	select SERIAL_CORE_CONSOLE
	help
	  Even if you say Y here, the currently visible virtual console
	  (/dev/tty0) will still be used as the system console by default, but