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+#
+# The 8250/16550 serial drivers.  You shouldn't be in this list unless
+# you somehow have an implicit or explicit dependency on SERIAL_8250.
+#
+
+config SERIAL_8250
+        tristate "8250/16550 and compatible serial support"
+        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 EXPERT
+        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 EXPERT
+        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.
+
+#
+# Misc. options/drivers.
+#
+
+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_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.
+
+config SERIAL_8250_FSL
+        bool
+        depends on SERIAL_8250_CONSOLE && PPC_UDBG_16550
+        default PPC
+
+config SERIAL_8250_DW
+        tristate "Support for Synopsys DesignWare 8250 quirks"
+        depends on SERIAL_8250 && OF
+        help
+          Selecting this option will enable handling of the extra features
+          present in the Synopsys DesignWare APB UART.