How to configure the Linux kernel/drivers/serial

Howto configure the Linux kernel / drivers / serial


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

Serial drivers

 * The new 8250/16550 serial drivers
 * The new 8250/16550 serial drivers


 * Option: SERIAL_8250
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) 8250/16550 and compatible serial support
 * depends on (BROKEN || !SPARC)
 * select SERIAL_CORE
 * 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 serial. [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.


 * Option: SERIAL_8250_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on 8250/16550 and compatible serial port
 * depends on SERIAL_8250=y
 * select SERIAL_CORE_CONSOLE
 * 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.
 * If unsure, say N.


 * Option: SERIAL_8250_CS
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) 8250/16550 PCMCIA device support
 * depends on PCMCIA && SERIAL_8250
 * 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.


 * Option: SERIAL_8250_ACPI
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) 8250/16550 device discovery via ACPI namespace
 * default y if IA64
 * depends on ACPI && SERIAL_8250
 * If you wish to enable serial port discovery via the ACPI namespace, say Y here. If unsure, say N.

"Maximum number of 8250/16550 serial ports"
 * Option: SERIAL_8250_NR_UARTS
 * Kernel Versions: 2.6.15.6 ...
 * depends on SERIAL_8250
 * default "4"
 * 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.


 * Option: SERIAL_8250_EXTENDED
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Extended 8250/16550 serial driver options
 * depends on SERIAL_8250
 * 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.


 * Option: SERIAL_8250_MANY_PORTS
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support more than 4 legacy serial ports
 * depends on SERIAL_8250_EXTENDED && !IA64
 * 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 ), 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.


 * Option: SERIAL_8250_SHARE_IRQ
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for sharing serial interrupts
 * depends on SERIAL_8250_EXTENDED
 * 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.


 * Option: SERIAL_8250_DETECT_IRQ
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Autodetect IRQ on standard ports (unsafe)
 * depends on SERIAL_8250_EXTENDED
 * 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.


 * Option: SERIAL_8250_RSA
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support RSA serial ports
 * depends on SERIAL_8250_EXTENDED
 * ::: To be written :::


 * Multi-port serial cards
 * Multi-port serial cards


 * Option: SERIAL_8250_FOURPORT
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Support Fourport cards
 * depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
 * 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.


 * Option: SERIAL_8250_ACCENT
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Support Accent cards
 * depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
 * 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.


 * Option: SERIAL_8250_BOCA
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Support Boca cards
 * depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
 * Say Y here if you have a Boca serial board. Please read the Boca mini-HOWTO, avaialble from 
 * To compile this driver as a module, choose M here: the module will be called 8250_boca.


 * Option: SERIAL_8250_HUB6
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Support Hub6 cards
 * depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
 * 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.


 * Option: SERIAL_8250_MCA
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Support 8250-type ports on MCA buses
 * depends on SERIAL_8250 != n && MCA
 * 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.


 * Option: SERIAL_8250_ACORN
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Acorn expansion card serial port support
 * depends on ARCH_ACORN && SERIAL_8250
 * 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.


 * Option: SERIAL_8250_AU1X00
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) AU1X00 serial port support
 * depends on SERIAL_8250 != n && SOC_AU1X00
 * 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.

"Non-8250 serial port support"


 * Option: SERIAL_AMBA_PL010
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) ARM AMBA PL010 serial port support
 * depends on ARM_AMBA && (BROKEN || !ARCH_VERSATILE)
 * select SERIAL_CORE
 * This selects the ARM(R) AMBA(R) PrimeCell PL010 UART. If you have an Integrator/AP or Integrator/PP2 platform, say Y or M here.
 * If unsure, say N.


 * Option: SERIAL_AMBA_PL010_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on AMBA serial port
 * depends on SERIAL_AMBA_PL010=y
 * select SERIAL_CORE_CONSOLE
 * 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.)


 * Option: SERIAL_AMBA_PL011
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) ARM AMBA PL011 serial port support
 * depends on ARM_AMBA
 * select SERIAL_CORE
 * 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.


 * Option: SERIAL_AMBA_PL011_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on AMBA serial port
 * depends on SERIAL_AMBA_PL011=y
 * select SERIAL_CORE_CONSOLE
 * 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.)


 * Option: SERIAL_CLPS711X
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) CLPS711X serial port support
 * depends on ARM && ARCH_CLPS711X
 * select SERIAL_CORE
 * ::: To be written :::


 * Option: SERIAL_CLPS711X_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on CLPS711X serial port
 * depends on SERIAL_CLPS711X=y
 * select SERIAL_CORE_CONSOLE
 * 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=ttyCL1. (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.)


 * Option: SERIAL_S3C2410
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Samsung S3C2410 Serial port support
 * depends on ARM && ARCH_S3C2410
 * select SERIAL_CORE
 * Support for the on-chip UARTs on the Samsung S3C2410X CPU, providing /dev/ttySAC0, 1 and 2 (note, some machines may not provide all of these ports, depending on how the serial port pins are configured.


 * Option: SERIAL_S3C2410_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on S3C2410 serial port
 * depends on SERIAL_S3C2410=y
 * select SERIAL_CORE_CONSOLE
 * Allow selection of the S3C2410 on-board serial ports for use as an virtual console.
 * 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=ttySACx. (Try man bootparam or see the documentation of your boot loader about how to pass options to the kernel at boot time.)


 * Option: SERIAL_DZ
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) DECstation DZ serial driver
 * depends on MACH_DECSTATION && 32BIT
 * select SERIAL_CORE
 * DZ11-family serial controllers for VAXstations, including the DC7085, M7814, and M7819.


 * Option: SERIAL_DZ_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support console on DECstation DZ serial driver
 * depends on SERIAL_DZ=y
 * select SERIAL_CORE_CONSOLE
 * 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). Note that the firmware uses ttyS0 as the serial console on the Maxine and ttyS2 on the others.
 * If unsure, say Y.


 * Option: SERIAL_21285
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) DC21285 serial port support
 * depends on ARM && FOOTBRIDGE
 * select SERIAL_CORE
 * If you have a machine based on a 21285 (Footbridge) StrongARM(R)/ PCI bridge you can enable its onboard serial port by enabling this option.


 * Option: SERIAL_21285_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on DC21285 serial port
 * depends on SERIAL_21285=y
 * select SERIAL_CORE_CONSOLE
 * If you have enabled the serial port on the 21285 footbridge you can make it the console by answering Y to this option.
 * 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=ttyFB. (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.)


 * Option: SERIAL_UART00
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Excalibur serial port (uart00) support
 * depends on ARM && ARCH_CAMELOT
 * select SERIAL_CORE
 * Say Y here if you want to use the hard logic uart on Excalibur. This driver also supports soft logic implementations of this uart core.


 * Option: SERIAL_UART00_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on Excalibur serial port
 * depends on SERIAL_UART00
 * select SERIAL_CORE_CONSOLE
 * Say Y here if you want to support a serial console on an Excalibur hard logic uart or uart00 IP core.
 * 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 (lilo or loadlin) about how to pass options to the kernel at boot time.)


 * Option: SERIAL_MPSC
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Marvell MPSC serial port support
 * depends on PPC32 && MV64X60
 * select SERIAL_CORE
 * Say Y here if you want to use the Marvell MPSC serial controller.


 * Option: SERIAL_MPSC_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on Marvell MPSC serial port
 * depends on SERIAL_MPSC
 * select SERIAL_CORE_CONSOLE
 * Say Y here if you want to support a serial console on a Marvell MPSC.


 * Option: SERIAL_PXA
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) PXA serial port support
 * depends on ARM && ARCH_PXA
 * select SERIAL_CORE
 * If you have a machine based on an Intel XScale PXA2xx CPU you can enable its onboard serial ports by enabling this option.


 * Option: SERIAL_PXA_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on PXA serial port
 * depends on SERIAL_PXA
 * select SERIAL_CORE_CONSOLE
 * If you have enabled the serial port on the Intel XScale PXA CPU you can make it the console by answering Y to this option.
 * 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=ttySA0. (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.)


 * Option: SERIAL_SA1100
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) SA1100 serial port support
 * depends on ARM && ARCH_SA1100
 * select SERIAL_CORE
 * If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you can enable its onboard serial port by enabling this option. Please read  for further info.


 * Option: SERIAL_SA1100_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on SA1100 serial port
 * depends on SERIAL_SA1100
 * select SERIAL_CORE_CONSOLE
 * If you have enabled the serial port on the SA1100/SA1110 StrongARM CPU you can make it the console by answering Y to this option.
 * 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=ttySA0. (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.)


 * Option: SERIAL_IMX
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) IMX serial port support
 * depends on ARM && ARCH_IMX
 * select SERIAL_CORE
 * If you have a machine based on a Motorola IMX CPU you can enable its onboard serial port by enabling this option.


 * Option: SERIAL_IMX_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on IMX serial port
 * depends on SERIAL_IMX
 * select SERIAL_CORE_CONSOLE
 * If you have enabled the serial port on the Motorola IMX CPU you can make it the console by answering Y to this option.
 * 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=ttySA0. (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.)


 * Option: SERIAL_SUNCORE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off)
 * depends on SPARC
 * select SERIAL_CORE
 * select SERIAL_CORE_CONSOLE
 * default y


 * Option: SERIAL_SUNZILOG
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Sun Zilog8530 serial support
 * depends on SPARC
 * This driver supports the Zilog8530 serial ports found on many Sparc systems. Say Y or M if you want to be able to these serial ports.


 * Option: SERIAL_SUNZILOG_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on Sun Zilog8530 serial port
 * depends on SERIAL_SUNZILOG=y
 * If you would like to be able to use the Zilog8530 serial port on your Sparc system as the console, you can do so by answering Y to this option.


 * Option: SERIAL_SUNSU
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Sun SU serial support
 * depends on SPARC && PCI
 * This driver supports the 8250 serial ports that run the keyboard and mouse on (PCI) UltraSPARC systems. Say Y or M if you want to be able to these serial ports.


 * Option: SERIAL_SUNSU_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on Sun SU serial port
 * depends on SERIAL_SUNSU=y
 * If you would like to be able to use the SU serial port on your Sparc system as the console, you can do so by answering Y to this option.


 * Option: SERIAL_MUX
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Serial MUX support
 * depends on GSC
 * select SERIAL_CORE
 * default y
 * Saying Y here will enable the hardware MUX serial driver for the Nova and K class systems. The hardware MUX is not 8250/16550  compatible therefore the /dev/ttyB0 device is shared between the  Serial MUX and the PDC software console.  The following steps  need to be completed to use the Serial MUX:
 * 1. create the device entry (mknod /dev/ttyB0 c 11 0)  2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0   3. Add device ttyB0 to /etc/securetty (if you want to log on asroot on this console.)   4. Change the kernel command console parameter to: console=ttyB0


 * Option: SERIAL_MUX_CONSOLE
 * Kernel Versions: 2.6.15.6 ...      bool Support for console on serial MUX       depends on SERIAL_MUX
 * select SERIAL_CORE_CONSOLE      default y


 * Option: PDC_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) PDC software console support
 * depends on PARISC && !SERIAL_MUX && VT
 * default n
 * Saying Y here will enable the software based PDC console to be used as the system console.  This is useful for machines in  which the hardware based console has not been written yet.  The following steps must be competed to use the PDC console:
 * 1. create the device entry (mknod /dev/ttyB0 c 11 0)  2. Edit the /etc/inittab to start a getty listening on /dev/ttyB0   3. Add device ttyB0 to /etc/securetty (if you want to log on asroot on this console.)   4. Change the kernel command console parameter to: console=ttyB0


 * Option: SERIAL_SUNSAB
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Sun Siemens SAB82532 serial support
 * depends on SPARC && PCI
 * This driver supports the Siemens SAB82532 DUSCC serial ports on newer (PCI) UltraSPARC systems. Say Y or M if you want to be able to these serial ports.


 * Option: SERIAL_SUNSAB_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on Sun Siemens SAB82532 serial port
 * depends on SERIAL_SUNSAB=y
 * If you would like to be able to use the SAB82532 serial port on your Sparc system as the console, you can do so by answering Y to this option.


 * Option: SERIAL_IP22_ZILOG
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) IP22 Zilog8530 serial support
 * depends on SGI_IP22
 * select SERIAL_CORE
 * This driver supports the Zilog8530 serial ports found on SGI IP22 systems. Say Y or M if you want to be able to these serial ports.


 * Option: SERIAL_IP22_ZILOG_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on IP22 Zilog8530 serial port
 * depends on SERIAL_IP22_ZILOG=y
 * select SERIAL_CORE_CONSOLE


 * Option: V850E_UART
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) NEC V850E on-chip UART support
 * depends on V850E_MA1 || V850E_ME2 || V850E_TEG || V850E2_ANNA || V850E_AS85EP1
 * select SERIAL_CORE
 * default y


 * Option: V850E_UARTB
 * Kernel Versions: 2.6.15.6 ...      bool
 * depends V850E_UART && V850E_ME2
 * default y


 * Option: V850E_UART_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Use NEC V850E on-chip UART for console
 * depends on V850E_UART
 * select SERIAL_CORE_CONSOLE


 * Option: SERIAL_SH_SCI
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) SH SCI(F) serial port support
 * depends on SUPERH || H8300
 * select SERIAL_CORE


 * Option: SERIAL_SH_SCI_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on SH SCI(F)
 * depends on SERIAL_SH_SCI=y
 * select SERIAL_CORE_CONSOLE


 * Option: SERIAL_AU1X00
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Enable Au1x00 UART Support
 * depends on MIPS && SOC_AU1X00
 * select SERIAL_CORE
 * If you have an Alchemy AU1X00 processor (MIPS based) and you want to use serial ports, say Y. Otherwise, say N.


 * Option: SERIAL_AU1X00_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Enable Au1x00 serial console
 * depends on SERIAL_AU1X00
 * select SERIAL_CORE_CONSOLE
 * If you have an Alchemy AU1X00 processor (MIPS based) and you want to use a console on a serial port, say Y. Otherwise, say N.


 * Option: SERIAL_CORE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module)


 * Option: SERIAL_CORE_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off)


 * Option: SERIAL_68328
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) 68328 serial support
 * depends on M68328 || M68EZ328 || M68VZ328
 * This driver supports the built-in serial port of the Motorola 68328 (standard, EZ and VZ varieties).


 * Option: SERIAL_68328_RTS_CTS
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support RTS/CTS on 68328 serial port
 * depends on SERIAL_68328


 * Option: SERIAL_COLDFIRE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) ColdFire serial support
 * depends on COLDFIRE
 * This driver supports the built-in serial ports of the Motorola ColdFire family of CPUs.


 * Option: SERIAL_68360_SMC
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) 68360 SMC uart support
 * depends on M68360
 * This driver supports the SMC serial ports of the Motorola 68360 CPU.


 * Option: SERIAL_68360_SCC
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) 68360 SCC uart support
 * depends on M68360
 * This driver supports the SCC serial ports of the Motorola 68360 CPU.


 * Option: SERIAL_68360
 * Kernel Versions: 2.6.15.6 ...
 * (on/off)
 * depends on SERIAL_68360_SMC || SERIAL_68360_SCC
 * default y


 * Option: SERIAL_PMACZILOG
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) PowerMac z85c30 ESCC support
 * depends on PPC_OF && PPC_PMAC
 * select SERIAL_CORE
 * This driver supports the Zilog z85C30 serial ports found on PowerMac machines. Say Y or M if you want to be able to these serial ports.


 * Option: SERIAL_PMACZILOG_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on PowerMac z85c30 serial port
 * depends on SERIAL_PMACZILOG=y
 * select SERIAL_CORE_CONSOLE
 * If you would like to be able to use the z85c30 serial port on your PowerMac as the console, you can do so by answering Y to this option.


 * Option: SERIAL_LH7A40X
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Sharp LH7A40X embedded UART support
 * depends on ARM && ARCH_LH7A40X
 * select SERIAL_CORE
 * This enables support for the three on-board UARTs of the Sharp LH7A40X series CPUs. Choose Y or M.


 * Option: SERIAL_LH7A40X_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on Sharp LH7A40X serial port
 * depends on SERIAL_LH7A40X=y
 * select SERIAL_CORE_CONSOLE
 * Say Y here if you wish to use one of the serial ports 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 default system console, but you can alter that using a kernel command line, for example console=ttyAM1.


 * Option: SERIAL_CPM
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) CPM SCC/SMC serial port support
 * depends on CPM2 || 8xx
 * select SERIAL_CORE
 * This driver supports the SCC and SMC serial ports on Motorola embedded PowerPC that contain a CPM1 (8xx) or CPM2 (8xxx)


 * Option: SERIAL_CPM_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for console on CPM SCC/SMC serial port
 * depends on SERIAL_CPM=y
 * select SERIAL_CORE_CONSOLE
 * Say Y here if you wish to use a SCC or SMC CPM 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=ttyCPM0. (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.)


 * Option: SERIAL_CPM_SCC1
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for SCC1 serial port
 * depends on SERIAL_CPM=y
 * Select the is option to use SCC1 as a serial port


 * Option: SERIAL_CPM_SCC2
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for SCC2 serial port
 * depends on SERIAL_CPM=y
 * Select the is option to use SCC2 as a serial port


 * Option: SERIAL_CPM_SCC3
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for SCC3 serial port
 * depends on SERIAL_CPM=y
 * Select the is option to use SCC3 as a serial port


 * Option: SERIAL_CPM_SCC4
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for SCC4 serial port
 * depends on SERIAL_CPM=y
 * Select the is option to use SCC4 as a serial port


 * Option: SERIAL_CPM_SMC1
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for SMC1 serial port
 * depends on SERIAL_CPM=y
 * Select the is option to use SMC1 as a serial port


 * Option: SERIAL_CPM_SMC2
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Support for SMC2 serial port
 * depends on SERIAL_CPM=y
 * Select the is option to use SMC2 as a serial port

you have an SGI Altix and you would like to use the system serial port as your console (you want this!), Y. Otherwise, say N.
 * Option: SERIAL_SGI_L1_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) SGI Altix L1 serial console support
 * depends on IA64_GENERIC || IA64_SGI_SN2
 * select SERIAL_CORE
 * select SERIAL_CORE_CONSOLE


 * Option: SERIAL_MPC52xx
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) Freescale MPC52xx family PSC serial support
 * depends on PPC_MPC52xx
 * select SERIAL_CORE
 * This drivers support the MPC52xx PSC serial ports. If you would like to use them, you must answer Y or M to this option. Not that for use as console, it must be included in kernel and not as a module.


 * Option: SERIAL_MPC52xx_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Console on a Freescale MPC52xx family PSC serial port
 * depends on SERIAL_MPC52xx=y
 * select SERIAL_CORE_CONSOLE
 * Select this options if you'd like to use one of the PSC serial port of the Freescale MPC52xx family as a console.

"Freescale MPC52xx family PSC serial port baud"
 * Option: SERIAL_MPC52xx_CONSOLE_BAUD
 * Kernel Versions: 2.6.15.6 ...
 * depends on SERIAL_MPC52xx_CONSOLE=y
 * default "9600"
 * Select the MPC52xx console baud rate. This value is only used if the bootloader doesn't pass in the console baudrate


 * Option: SERIAL_ICOM
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) IBM Multiport Serial Adapter
 * depends on PCI && (PPC_ISERIES || PPC_PSERIES)
 * select SERIAL_CORE
 * This driver is for a family of multiport serial adapters including 2 port RVX, 2 port internal modem, 4 port internal modem and a split 1 port RVX and 1 port internal modem.
 * This driver can also be built as a module. If so, the module will be called icom.


 * Option: SERIAL_M32R_SIO
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) M32R SIO I/F
 * depends on M32R
 * default y
 * select SERIAL_CORE
 * Say Y here if you want to use the M32R serial controller.


 * Option: SERIAL_M32R_SIO_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) use SIO console
 * depends on SERIAL_M32R_SIO=y
 * select SERIAL_CORE_CONSOLE
 * Say Y here if you want to support a serial console.
 * If you use an M3T-M32700UT or an OPSPUT platform, please say also y for SERIAL_M32R_PLDSIO.


 * Option: SERIAL_M32R_PLDSIO
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) M32R SIO I/F on a PLD
 * depends on SERIAL_M32R_SIO=y && (PLAT_OPSPUT || PALT_USRV || PLAT_M32700UT)
 * default n
 * Say Y here if you want to use the M32R serial controller on a PLD (Programmable Logic Device).
 * If you use an M3T-M32700UT or an OPSPUT platform, please say Y.


 * Option: SERIAL_TXX9
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) TMPTX39XX/49XX SIO support
 * depends HAS_TXX9_SERIAL && BROKEN
 * select SERIAL_CORE
 * default y


 * Option: HAS_TXX9_SERIAL
 * Kernel Versions: 2.6.15.6 ...
 * (on/off)


 * Option: SERIAL_TXX9_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) TMPTX39XX/49XX SIO Console support
 * depends on SERIAL_TXX9=y
 * select SERIAL_CORE_CONSOLE


 * Option: SERIAL_TXX9_STDSERIAL
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) TX39XX/49XX SIO act as standard serial
 * depends on !SERIAL_8250 && SERIAL_TXX9


 * Option: SERIAL_VR41XX
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) NEC VR4100 series Serial Interface Unit support
 * depends on CPU_VR41XX
 * select SERIAL_CORE
 * If you have a NEC VR4100 series processor and you want to use Serial Interface Unit(SIU) or Debug Serial Interface Unit(DSIU) (not include VR4111/VR4121 DSIU), say Y. Otherwise, say N.


 * Option: SERIAL_VR41XX_CONSOLE
 * Kernel Versions: 2.6.15.6 ...
 * (on/off) Enable NEC VR4100 series Serial Interface Unit console
 * depends on SERIAL_VR41XX
 * select SERIAL_CORE_CONSOLE
 * If you have a NEC VR4100 series processor and you want to use a console on a serial port, say Y. Otherwise, say N.


 * Option: SERIAL_JSM
 * Kernel Versions: 2.6.15.6 ...      tristate Digi International NEO PCI Support
 * depends on PCI       select SERIAL_CORE       help         This is a driver for Digi International's Neo 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 PCI boards only.         If you have a card like this, say Y here and read the file         .
 * To compile this driver as a module, choose M here: the        module will be called jsm.

you have an SGI Altix with an IOC4 based Base IO card wish to use the serial ports on this card, say Y., say N.
 * Option: SERIAL_SGI_IOC4
 * Kernel Versions: 2.6.15.6 ...
 * (on/off/module) SGI IOC4 controller serial support
 * depends on (IA64_GENERIC || IA64_SGI_SN2) && SGI_IOC4
 * select SERIAL_CORE

Linux Kernel Configuration