📄 kconfig
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bool "Area6"endchoiceconfig CF_BASE_ADDR hex depends on CF_ENABLER default "0xb8000000" if CF_AREA6 default "0xb4000000" if CF_AREA5# The SH7750 RTC module is disabled in the Dreamcastconfig SH_RTC bool depends on !SH_DREAMCAST && !SH_SATURN && !SH_7300_SOLUTION_ENGINE default y help Selecting this option will allow the Linux kernel to emulate PC's RTC. If unsure, say N.config SH_DSP bool "DSP support" depends on !CPU_SH4 default y help Selecting this option will enable support for SH processors that have DSP units (ie, SH2-DSP and SH3-DSP). It is safe to say Y here by default, as the existance of the DSP will be probed at runtime. This option must be set in order to enable the DSP.config SH_ADC bool "ADC support" depends on CPU_SH3 default y help Selecting this option will allow the Linux kernel to use SH3 on-chip ADC module. If unsure, say N.config SH_HP600 bool depends on SH_HP620 || SH_HP680 || SH_HP690 default yconfig CPU_SUBTYPE_ST40 bool depends on CPU_SUBTYPE_ST40STB1 || CPU_SUBTYPE_ST40GX1 default yconfig DISCONTIGMEM bool depends on SH_HP690 default y help Say Y to upport efficient handling of discontiguous physical memory, for architectures which are either NUMA (Non-Uniform Memory Access) or have huge holes in the physical address space for other reasons. See <file:Documentation/vm/numa> for more.config ZERO_PAGE_OFFSET hex "Zero page offset" default "0x00001000" if !SH_MPC1211 default "0x00004000" if SH_MPC1211 help This sets the default offset of zero page.# XXX: needs to lose subtype for system typeconfig ST40_LMI_MEMORY bool "Memory on LMI" depends on CPU_SUBTYPE_ST40STB1config MEMORY_START hex depends on CPU_SUBTYPE_ST40STB1 && ST40_LMI_MEMORY default "0x08000000"config MEMORY_SIZE hex depends on CPU_SUBTYPE_ST40STB1 && ST40_LMI_MEMORY default "0x00400000"config MEMORY_SET bool depends on CPU_SUBTYPE_ST40STB1 && ST40_LMI_MEMORY default yconfig 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 CPU_LITTLE_ENDIAN bool "Little Endian" help Some SuperH machines can be configured for either little or big endian byte order. These modes require different kernels. Say Y if your machine is little endian, N if it's a big endian machine.config PREEMPT bool "Preemptible Kernel (EXPERIMENTAL)" depends on EXPERIMENTALconfig UBC_WAKEUP bool "Wakeup UBC on startup" 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 SH_WRITETHROUGH bool "Use write-through caching" default y if CPU_SH2 help Selecting this option will configure the caches in write-through mode, as opposed to the default write-back configuration. Since there's sill some aliasing issues on SH-4, this option will unfortunately still require the majority of flushing functions to be implemented to deal with aliasing. If unsure, say N.config SH_OCRAM bool "Operand Cache RAM (OCRAM) support" help Selecting this option will automatically tear down the number of sets in the dcache by half, which in turn exposes a memory range. The addresses for the OC RAM base will vary according to the processor version. Consult vendor documentation for specifics. If unsure, say N.config SH_STORE_QUEUES bool "Support for Store Queues" depends on CPU_SH4 help Selecting this option will enable an in-kernel API for manipulating the store queues integrated in the SH-4 processors.config SMP bool "Symmetric multi-processing support" ---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 "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.config HS7751RVOIP_CODEC bool "Support VoIP Codec section" depends on SH_HS7751RVOIP help Selecting this option will support CODEC section.config RTS7751R2D_REV11 bool "RTS7751R2D Rev. 1.1 board support" depends on SH_RTS7751R2D help Selecting this option will support version rev. 1.1.config SH_PCLK_CALC bool default n if CPU_SUBTYPE_SH7300 default y help This option will cause the PCLK value to be probed at run-time. It will display a notification if the probed value has greater than a 1% variance of the hardcoded CONFIG_SH_PCLK_FREQ.config SH_PCLK_FREQ int "Peripheral clock frequency (in Hz)" default "49876504" if CPU_SUBTYPE_SH7750 default "60013568" if CPU_SUBTYPE_SH7751 default "33333333" if CPU_SUBTYPE_SH7300 default "1193182" help This option is used to specify the peripheral clock frequency. This option must be set for each processor in order for the kernel to function reliably. If no sane default exists, we use a default from the legacy i8254. Any discrepancies will be reported on boot time with an auto-probed frequency which should be considered the proper value for your hardware.menu "CPU Frequency scaling"config CPU_FREQ bool "CPU Frequency scaling" help CPU clock scaling allows you to change the clock speed of the running CPU on the fly. For details, take a look at <file:Documentation/cpu-freq>. If unsure, say N.source "drivers/cpufreq/Kconfig"config CPU_FREQ_TABLE tristate "CPU frequency table helpers" depends on CPU_FREQ default y help Many cpufreq drivers use these helpers, so only say N here if the cpufreq driver of your choice doesn't need these helpers. If unsure, say Y.config SH_CPU_FREQ tristate "SuperH CPU Frequency driver" depends on CPU_FREQ 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.endmenusource "arch/sh/drivers/dma/Kconfig"source "arch/sh/cchips/Kconfig"config HEARTBEAT bool "Heartbeat LED" depends on SH_MPC1211 || SH_CAT68701 || SH_STB1_HARP || SH_STB1_OVERDRIVE || SH_BIGSUR || SH_7751_SOLUTION_ENGINE || SH_7300_SOLUTION_ENGINE || SH_SOLUTION_ENGINE || SH_RTS7751R2D help Use the power-on LED on your machine as a load meter. The exact behavior is platform-dependent, but normally the flash frequency is a hyperbolic function of the 5-minute load average.config RTC_9701JE tristate "EPSON RTC-9701JE support" depends on SH_RTS7751R2D help Selecting this option will support EPSON RTC-9701JE.endmenumenu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"# 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 bool default y if PCMCIA 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 boolconfig MAPLE tristate "Maple Bus support" depends on SH_DREAMCAST default ysource "arch/sh/drivers/pci/Kconfig"source "drivers/pci/Kconfig"source "drivers/pcmcia/Kconfig"source "drivers/pci/hotplug/Kconfig"endmenumenu "Executable file formats"source "fs/Kconfig.binfmt"endmenumenu "SH initrd options" depends on BLK_DEV_INITRDconfig EMBEDDED_RAMDISK bool "Embed root filesystem ramdisk into the kernel"config EMBEDDED_RAMDISK_IMAGE string "Filename of gziped ramdisk image" depends on EMBEDDED_RAMDISK default "ramdisk.gz" help This is the filename of the ramdisk image to be built into the kernel. Relative pathnames are relative to arch/mips/ramdisk/. The ramdisk image is not part of the kernel distribution; you must provide one yourself.endmenusource "drivers/Kconfig"source "fs/Kconfig"source "arch/sh/oprofile/Kconfig"source "arch/sh/Kconfig.debug"source "security/Kconfig"source "crypto/Kconfig"source "lib/Kconfig"
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