config.help

是关于linux2.5.1的完全源码

CONFIG_IDE
  If you say Y here, your kernel will be able to manage low cost mass
  storage units such as ATA/(E)IDE and ATAPI units. The most common
  cases are IDE hard drives and ATAPI CD-ROM drives.

  If your system is pure SCSI and doesn't use these interfaces, you
  can say N here.

  Integrated Disk Electronics (IDE aka ATA-1) is a connecting standard
  for mass storage units such as hard disks. It was designed by
  Western Digital and Compaq Computer in 1984. It was then named
  ST506. Quite a number of disks use the IDE interface.

  AT Attachment (ATA) is the superset of the IDE specifications.
  ST506 was also called ATA-1.

  Fast-IDE is ATA-2 (also named Fast ATA), Enhanced IDE (EIDE) is
  ATA-3. It provides support for larger disks (up to 8.4GB by means of
  the LBA standard), more disks (4 instead of 2) and for other mass
  storage units such as tapes and cdrom. UDMA/33 (aka UltraDMA/33) is
  ATA-4 and provides faster (and more CPU friendly) transfer modes
  than previous PIO (Programmed processor Input/Output) from previous
  ATA/IDE standards by means of fast DMA controllers.

  ATA Packet Interface (ATAPI) is a protocol used by EIDE tape and
  CD-ROM drives, similar in many respects to the SCSI protocol.

  SMART IDE (Self Monitoring, Analysis and Reporting Technology) was
  designed in order to prevent data corruption and disk crash by
  detecting pre hardware failure conditions (heat, access time, and
  the like...). Disks built since June 1995 may follow this standard.
  The kernel itself don't manage this; however there are quite a
  number of user programs such as smart that can query the status of
  SMART parameters disk.

  If you want to compile this driver as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read <file:Documentation/modules.txt>. The module
  will be called ide.o.

  For further information, please read <file:Documentation/ide.txt>.

  If unsure, say Y.

CONFIG_BLK_DEV_IDE
  If you say Y here, you will use the full-featured IDE driver to
  control up to ten ATA/IDE interfaces, each being able to serve a
  "master" and a "slave" device, for a total of up to twenty ATA/IDE
  disk/cdrom/tape/floppy drives.

  Useful information about large (>540 MB) IDE disks, multiple
  interfaces, what to do if ATA/IDE devices are not automatically
  detected, sound card ATA/IDE ports, module support, and other
  topics, is contained in <file:Documentation/ide.txt>. For detailed
  information about hard drives, consult the Disk-HOWTO and the
  Multi-Disk-HOWTO, available from
  <http://www.linuxdoc.org/docs.html#howto>.

  To fine-tune ATA/IDE drive/interface parameters for improved
  performance, look for the hdparm package at
  <ftp://ibiblio.org/pub/Linux/system/hardware/>.

  If you want to compile this driver as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read <file:Documentation/modules.txt> and
  <file:Documentation/ide.txt>. The module will be called ide-mod.o.
  Do not compile this driver as a module if your root file system (the
  one containing the directory /) is located on an IDE device.

  If you have one or more IDE drives, say Y or M here. If your system
  has no IDE drives, or if memory requirements are really tight, you
  could say N here, and select the "Old hard disk driver" below
  instead to save about 13 KB of memory in the kernel.

CONFIG_BLK_DEV_IDEDISK
  This will include enhanced support for MFM/RLL/IDE hard disks.  If
  you have a MFM/RLL/IDE disk, and there is no special reason to use
  the old hard disk driver instead, say Y.  If you have an SCSI-only
  system, you can say N here.

  If you want to compile this driver as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read <file:Documentation/modules.txt>.  The module
  will be called ide-disk.o.  Do not compile this driver as a module
  if your root file system (the one containing the directory /) is
  located on the IDE disk. If unsure, say Y.

CONFIG_BLK_DEV_IDECD
  If you have a CD-ROM drive using the ATAPI protocol, say Y. ATAPI is
  a newer protocol used by IDE CD-ROM and TAPE drives, similar to the
  SCSI protocol. Most new CD-ROM drives use ATAPI, including the
  NEC-260, Mitsumi FX400, Sony 55E, and just about all non-SCSI
  double(2X) or better speed drives.

  If you say Y here, the CD-ROM drive will be identified at boot time
  along with other IDE devices, as "hdb" or "hdc", or something
  similar (check the boot messages with dmesg). If this is your only
  CD-ROM drive, you can say N to all other CD-ROM options, but be sure
  to say Y or M to "ISO 9660 CD-ROM file system support".

  Note that older versions of LILO (LInux LOader) cannot properly deal
  with IDE/ATAPI CD-ROMs, so install LILO 16 or higher, available from
  <ftp://brun.dyndns.org/pub/linux/lilo/>.

  If you want to compile the driver as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want),
  say M here and read <file:Documentation/modules.txt>.  The module
  will be called ide-cd.o.

CONFIG_PARPORT
  If you want to use devices connected to your machine's parallel port
  (the connector at the computer with 25 holes), e.g. printer, ZIP
  drive, PLIP link (Parallel Line Internet Protocol is mainly used to
  create a mini network by connecting the parallel ports of two local
  machines) etc., then you need to say Y here; please read
  <file:Documentation/parport.txt> and
  <file:drivers/parport/BUGS-parport>.

  For extensive information about drivers for many devices attaching
  to the parallel port see <http://www.torque.net/linux-pp.html> on
  the WWW.

  It is possible to share a single parallel port among several devices
  and it is safe to compile all the corresponding drivers into the
  kernel.  If you want to compile parallel port support as a module
  ( = code which can be inserted in and removed from the running
  kernel whenever you want), say M here and read
  <file:Documentation/modules.txt>.  The module will be called
  parport.o.  If you have more than one parallel port and want to
  specify which port and IRQ to be used by this driver at module load
  time, take a look at <file:Documentation/parport.txt>.

  If unsure, say Y.

CONFIG_PARPORT_1284
  If you have a printer that supports status readback or device ID, or
  want to use a device that uses enhanced parallel port transfer modes
  such as EPP and ECP, say Y here to enable advanced IEEE 1284
  transfer modes. Also say Y if you want device ID information to
  appear in /proc/sys/dev/parport/*/autoprobe*. It is safe to say N.

CONFIG_NET_ETHERNET
  Ethernet (also called IEEE 802.3 or ISO 8802-2) is the most common
  type of Local Area Network (LAN) in universities and companies.

  Common varieties of Ethernet are: 10BASE-2 or Thinnet (10 Mbps over
  coaxial cable, linking computers in a chain), 10BASE-T or twisted
  pair (10 Mbps over twisted pair cable, linking computers to central
  hubs), 10BASE-F (10 Mbps over optical fiber links, using hubs),
  100BASE-TX (100 Mbps over two twisted pair cables, using hubs),
  100BASE-T4 (100 Mbps over 4 standard voice-grade twisted pair
  cables, using hubs), 100BASE-FX (100 Mbps over optical fiber links)
  [the 100BASE varieties are also known as Fast Ethernet], and Gigabit
  Ethernet (1 Gbps over optical fiber or short copper links).

  If your Linux machine will be connected to an Ethernet and you have
  an Ethernet network interface card (NIC) installed in your computer,
  say Y here and read the Ethernet-HOWTO, available from
  <http://www.linuxdoc.org/docs.html#howto>. You will then also have
  to say Y to the driver for your particular NIC.

  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 Ethernet network cards. If unsure, say N.

CONFIG_MTD
  Memory Technology Devices are flash, RAM and similar chips, often
  used for solid state file systems on embedded devices. This option
  will provide the generic support for MTD drivers to register
  themselves with the kernel and for potential users of MTD devices
  to enumerate the devices which are present and obtain a handle on
  them. It will also allow you to select individual drivers for 
  particular hardware and users of MTD devices. If unsure, say N.

CONFIG_MTD_PARTITIONS
  If you have a device which needs to divide its flash chip(s) up
  into multiple 'partitions', each of which appears to the user as
  a separate MTD device, you require this option to be enabled. If
  unsure, say 'Y'.

  Note, however, that you don't need this option for the DiskOnChip
  devices. Partitioning on NFTL 'devices' is a different - that's the
  'normal' form of partitioning used on a block device.

CONFIG_MTD_CHAR
  This provides a character device for each MTD device present in
  the system, allowing the user to read and write directly to the
  memory chips, and also use ioctl() to obtain information about
  the device, or to erase parts of it.

CONFIG_MTD_BLOCK
  Although most flash chips have an erase size too large to be useful
  as block devices, it is possible to use MTD devices which are based
  on RAM chips in this manner. This block device is a user of MTD
  devices performing that function.

  At the moment, it is also required for the Journalling Flash File
  System(s) to obtain a handle on the MTD device when it's mounted
  (although JFFS and JFFS2 don't actually use any of the functionality
  of the mtdblock device).

  Later, it may be extended to perform read/erase/modify/write cycles
  on flash chips to emulate a smaller block size. Needless to say,
  this is very unsafe, but could be useful for file systems which are
  almost never written to.

  You do not need this option for use with the DiskOnChip devices. For
  those, enable NFTL support (CONFIG_NFTL) instead.

CONFIG_MTD_CFI
  The Common Flash Interface specification was developed by Intel,
  AMD and other flash manufactures that provides a universal method
  for probing the capabilities of flash devices. If you wish to
  support any device that is CFI-compliant, you need to enable this
  option. Visit <http://www.amd.com/products/nvd/overview/cfi.html>
  for more information on CFI.

CONFIG_MTD_CFI_INTELEXT
  The Common Flash Interface defines a number of different command
  sets which a CFI-compliant chip may claim to implement. This code
  provides support for one of those command sets, used on Intel
  StrataFlash and other parts.

CONFIG_MTD_CFI_AMDSTD
  The Common Flash Interface defines a number of different command
  sets which a CFI-compliant chip may claim to implement. This code
  provides support for one of those command sets, used on chips 
  chips including the AMD Am29LV320.

CONFIG_MTD_AMDSTD
  This option enables support for flash chips using AMD-compatible
  commands, including some which are not CFI-compatible and hence 
  cannot be used with the CONFIG_MTD_CFI_AMDSTD option.

  It also works on AMD compatible chips that do conform to CFI.

CONFIG_USB
  Universal Serial Bus (USB) is a specification for a serial bus
  subsystem which offers higher speeds and more features than the
  traditional PC serial port.  The bus supplies power to peripherals
  and allows for hot swapping.  Up to 127 USB peripherals can be
  connected to a single USB port in a tree structure.  The USB port is
  the root of the tree, the peripherals are the leaves and the inner
  nodes are special USB devices called hubs.  Many newer PC's have USB
  ports and newer peripherals such as scanners, keyboards, mice,
  modems, and printers support the USB protocol and can be connected
  to the PC via those ports.

  Say Y here if your computer has a USB port and you want to use USB
  devices.  You then need to say Y to at least one of "UHCI support"
  or "OHCI support" below (the type of interface that the USB hardware
  in your computer provides to the operating system) and then choose
  from among the drivers for USB peripherals.  You may want to check
  out the information provided in <file:Documentation/usb/> and
  especially the links given in <file:Documentation/usb/usb-help.txt>.

  This code is also available as a module ( = code which can be
  inserted in and removed from the running kernel whenever you want).
  The module will be called usbcore.o.  If you want to compile it as a
  module, say M here and read <file:Documentation/modules.txt>.

CONFIG_PRINTER
  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.linuxdoc.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.  If you want to compile this
  driver as a module however ( = code which can be inserted in and
  removed from the running kernel whenever you want), say M here and
  read <file:Documentation/modules.txt> and
  <file:Documentation/parport.txt>.  The module will be called lp.o.

  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_ETRAX_PA_BUTTON_BITMASK
  This is a bitmask with information about what bits on PA that
  are used for buttons.