kconfig

linux 内核源代码

config SH_LBOX_RE2
	bool "L-BOX RE2"
	depends on CPU_SUBTYPE_SH7751R
	select SYS_SUPPORTS_PCI
	help
	  Select L-BOX RE2 if configuring for the NTT COMWARE L-BOX RE2.

config SH_X3PROTO
	bool "SH-X3 Prototype board"
	depends on CPU_SUBTYPE_SHX3

config SH_MAGIC_PANEL_R2
	bool "Magic Panel R2"
	depends on CPU_SUBTYPE_SH7720
	help
	  Select Magic Panel R2 if configuring for Magic Panel R2.

endmenu

source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
source "arch/sh/boards/renesas/r7780rp/Kconfig"
source "arch/sh/boards/magicpanelr2/Kconfig"

menu "Timer and clock configuration"

config SH_TMU
	bool "TMU timer support"
	depends on CPU_SH3 || CPU_SH4
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	default y
	help
	  This enables the use of the TMU as the system timer.

config SH_CMT
	bool "CMT timer support"
	depends on CPU_SH2
	default y
	help
	  This enables the use of the CMT as the system timer.

config SH_MTU2
	bool "MTU2 timer support"
	depends on CPU_SH2A
	default n
	help
	  This enables the use of the MTU2 as the system timer.

config SH_TIMER_IRQ
	int
	default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
	default "86" if CPU_SUBTYPE_SH7619
	default "140" if CPU_SUBTYPE_SH7206
	default "16"

config SH_PCLK_FREQ
	int "Peripheral clock frequency (in Hz)"
	default "27000000" if CPU_SUBTYPE_SH7343
	default "31250000" if CPU_SUBTYPE_SH7619
	default "32000000" if CPU_SUBTYPE_SH7722
	default "33333333" if CPU_SUBTYPE_SH7770 || \
			      CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
			      CPU_SUBTYPE_SH7206
	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
	default "66000000" if CPU_SUBTYPE_SH4_202
	default "50000000"
	help
	  This option is used to specify the peripheral clock frequency.
	  This is necessary for determining the reference clock value on
	  platforms lacking an RTC.

config SH_CLK_MD
	int "CPU Mode Pin Setting"
	depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
	default 6 if CPU_SUBTYPE_SH7206
	default 5 if CPU_SUBTYPE_SH7619
	default 0
	help
	  MD2 - MD0 pin setting.

source "kernel/time/Kconfig"

endmenu

menu "CPU Frequency scaling"

source "drivers/cpufreq/Kconfig"

config SH_CPU_FREQ
	tristate "SuperH CPU Frequency driver"
	depends on CPU_FREQ
	select CPU_FREQ_TABLE
	help
	  This adds the cpufreq driver for SuperH. At present, only
	  the SH-4 is supported.

	  For details, take a look at <file:Documentation/cpu-freq>.

	  If unsure, say N.

endmenu

source "arch/sh/drivers/Kconfig"

endmenu

config ISA_DMA_API
	bool
	depends on SH_MPC1211
	default y

menu "Kernel features"

source kernel/Kconfig.hz

config KEXEC
	bool "kexec system call (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	help
	  kexec is a system call that implements the ability to shutdown your
	  current kernel, and to start another kernel.  It is like a reboot
	  but it is independent of the system firmware.  And like a reboot
	  you can start any kernel with it, not just Linux.

	  The name comes from the similarity to the exec system call.

	  It is an ongoing process to be certain the hardware in a machine
	  is properly shutdown, so do not be surprised if this code does not
	  initially work for you.  It may help to enable device hotplugging
	  support.  As of this writing the exact hardware interface is
	  strongly in flux, so no good recommendation can be made.

config CRASH_DUMP
	bool "kernel crash dumps (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	help
	  Generate crash dump after being started by kexec.
	  This should be normally only set in special crash dump kernels
	  which are loaded in the main kernel with kexec-tools into
	  a specially reserved region and then later executed after
	  a crash by kdump/kexec. The crash dump kernel must be compiled
	  to a memory address not used by the main kernel using
	  MEMORY_START.

	  For more details see Documentation/kdump/kdump.txt

config SMP
	bool "Symmetric multi-processing support"
	depends on SYS_SUPPORTS_SMP
	---help---
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, like most personal computers, say N. If
	  you have a system with more than one CPU, say Y.

	  If you say N here, the kernel will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on many, but not all,
	  singleprocessor machines. On a singleprocessor machine, the kernel
	  will run faster if you say N here.

	  People using multiprocessor machines who say Y here should also say
	  Y to "Enhanced Real Time Clock Support", below.

	  See also the <file:Documentation/smp.txt>,
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
	  at <http://www.tldp.org/docs.html#howto>.

	  If you don't know what to do here, say N.

config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4" if CPU_SHX3
	default "2"
	help
	  This allows you to specify the maximum number of CPUs which this
	  kernel will support.  The maximum supported value is 32 and the
	  minimum value which makes sense is 2.

	  This is purely to save memory - each supported CPU adds
	  approximately eight kilobytes to the kernel image.

source "kernel/Kconfig.preempt"

config GUSA
	def_bool y
	depends on !SMP
	help
	  This enables support for gUSA (general UserSpace Atomicity).
	  This is the default implementation for both UP and non-ll/sc
	  CPUs, and is used by the libc, amongst others.

	  For additional information, design information can be found 
	  in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.

	  This should only be disabled for special cases where alternate
	  atomicity implementations exist.

endmenu

menu "Boot options"

config ZERO_PAGE_OFFSET
	hex "Zero page offset"
	default "0x00004000" if SH_MPC1211 || SH_SH03
	default "0x00010000" if PAGE_SIZE_64KB
	default "0x00002000" if PAGE_SIZE_8KB
	default "0x00001000"
	help
	  This sets the default offset of zero page.

config BOOT_LINK_OFFSET
	hex "Link address offset for booting"
	default "0x00800000"
	help
	  This option allows you to set the link address offset of the zImage.
	  This can be useful if you are on a board which has a small amount of
	  memory.

config UBC_WAKEUP
	bool "Wakeup UBC on startup"
	depends on CPU_SH4 && !CPU_SH4A
	help
	  Selecting this option will wakeup the User Break Controller (UBC) on
	  startup. Although the UBC is left in an awake state when the processor
	  comes up, some boot loaders misbehave by putting the UBC to sleep in a
	  power saving state, which causes issues with things like ptrace().

	  If unsure, say N.

config CMDLINE_BOOL
	bool "Default bootloader kernel arguments"

config CMDLINE
	string "Initial kernel command string"
	depends on CMDLINE_BOOL
	default "console=ttySC1,115200"

endmenu

menu "Bus options"

# Even on SuperH devices which don't have an ISA bus,
# this variable helps the PCMCIA modules handle
# IRQ requesting properly -- Greg Banks.
#
# Though we're generally not interested in it when
# we're not using PCMCIA, so we make it dependent on
# PCMCIA outright. -- PFM.
config ISA
	def_bool y
	depends on PCMCIA && HD6446X_SERIES
	help
	  Find out whether you have ISA slots on your motherboard.  ISA is the
	  name of a bus system, i.e. the way the CPU talks to the other stuff
	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
	  newer boards don't support it.  If you have ISA, say Y, otherwise N.

config EISA
	bool
	---help---
	  The Extended Industry Standard Architecture (EISA) bus was
	  developed as an open alternative to the IBM MicroChannel bus.

	  The EISA bus provided some of the features of the IBM MicroChannel
	  bus while maintaining backward compatibility with cards made for
	  the older ISA bus.  The EISA bus saw limited use between 1988 and
	  1995 when it was made obsolete by the PCI bus.

	  Say Y here if you are building a kernel for an EISA-based machine.

	  Otherwise, say N.

config MCA
	bool
	help
	  MicroChannel Architecture is found in some IBM PS/2 machines and
	  laptops.  It is a bus system similar to PCI or ISA. See
	  <file:Documentation/mca.txt> (and especially the web page given
	  there) before attempting to build an MCA bus kernel.

config SBUS
	bool

config SUPERHYWAY
	tristate "SuperHyway Bus support"
	depends on CPU_SUBTYPE_SH4_202

config MAPLE
       bool "Maple Bus support"
       depends on SH_DREAMCAST
       help
         The Maple Bus is SEGA's serial communication bus for peripherals
         on the Dreamcast. Without this bus support you won't be able to
         get your Dreamcast keyboard etc to work, so most users
         probably want to say 'Y' here, unless you are only using the
         Dreamcast with a serial line terminal or a remote network
         connection.

config CF_ENABLER
	bool "Compact Flash Enabler support"
	depends on SOLUTION_ENGINE || SH_SH03
	---help---
	  Compact Flash is a small, removable mass storage device introduced
	  in 1994 originally as a PCMCIA device.  If you say `Y' here, you
	  compile in support for Compact Flash devices directly connected to
	  a SuperH processor.  A Compact Flash FAQ is available at
	  <http://www.compactflash.org/faqs/faq.htm>.

	  If your board has "Directly Connected" CompactFlash at area 5 or 6,
	  you may want to enable this option.  Then, you can use CF as
	  primary IDE drive (only tested for SanDisk).

	  If in doubt, select 'N'.

choice
	prompt "Compact Flash Connection Area"
	depends on CF_ENABLER
	default CF_AREA6

config CF_AREA5
	bool "Area5"
	help
	  If your board has "Directly Connected" CompactFlash, You should
	  select the area where your CF is connected to.

	  - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
	  - "Area6" if it is connected to Area 6 (0x18000000)

	  "Area6" will work for most boards.

config CF_AREA6
	bool "Area6"

endchoice

config CF_BASE_ADDR
	hex
	depends on CF_ENABLER
	default "0xb8000000" if CF_AREA6
	default "0xb4000000" if CF_AREA5

source "arch/sh/drivers/pci/Kconfig"

source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

source "drivers/pci/hotplug/Kconfig"

endmenu

menu "Executable file formats"

source "fs/Kconfig.binfmt"

endmenu

menu "Power management options (EXPERIMENTAL)"
depends on EXPERIMENTAL && SYS_SUPPORTS_PM

source kernel/power/Kconfig

endmenu

source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

source "kernel/Kconfig.instrumentation"

source "arch/sh/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"