419 lines
11 KiB
Text
419 lines
11 KiB
Text
# $Id: config.in,v 1.158 2002/01/24 22:14:44 davem Exp $
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# For a description of the syntax of this configuration file,
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# see the Configure script.
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#
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mainmenu "Linux/UltraSPARC Kernel Configuration"
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config SPARC
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bool
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default y
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config SPARC64
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bool
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default y
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help
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SPARC is a family of RISC microprocessors designed and marketed by
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Sun Microsystems, incorporated. This port covers the newer 64-bit
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UltraSPARC. The UltraLinux project maintains both the SPARC32 and
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SPARC64 ports; its web page is available at
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<http://www.ultralinux.org/>.
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config 64BIT
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def_bool y
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config MMU
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bool
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default y
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config TIME_INTERPOLATION
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bool
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default y
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config ARCH_MAY_HAVE_PC_FDC
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bool
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default y
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choice
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prompt "Kernel page size"
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default SPARC64_PAGE_SIZE_8KB
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config SPARC64_PAGE_SIZE_8KB
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bool "8KB"
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help
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This lets you select the page size of the kernel.
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8KB and 64KB work quite well, since Sparc ELF sections
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provide for up to 64KB alignment.
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Therefore, 512KB and 4MB are for expert hackers only.
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If you don't know what to do, choose 8KB.
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config SPARC64_PAGE_SIZE_64KB
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bool "64KB"
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config SPARC64_PAGE_SIZE_512KB
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bool "512KB"
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config SPARC64_PAGE_SIZE_4MB
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bool "4MB"
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endchoice
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config SECCOMP
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bool "Enable seccomp to safely compute untrusted bytecode"
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depends on PROC_FS
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default y
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help
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This kernel feature is useful for number crunching applications
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that may need to compute untrusted bytecode during their
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execution. By using pipes or other transports made available to
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the process as file descriptors supporting the read/write
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syscalls, it's possible to isolate those applications in
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their own address space using seccomp. Once seccomp is
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enabled via /proc/<pid>/seccomp, it cannot be disabled
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and the task is only allowed to execute a few safe syscalls
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defined by each seccomp mode.
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If unsure, say Y. Only embedded should say N here.
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source kernel/Kconfig.hz
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source "init/Kconfig"
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config SYSVIPC_COMPAT
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bool
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depends on COMPAT && SYSVIPC
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default y
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menu "General machine setup"
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config SMP
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bool "Symmetric multi-processing support"
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---help---
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, say N. If you have a system with more than
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one CPU, say Y.
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If you say N here, the kernel will run on single and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all,
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singleprocessor machines. On a singleprocessor machine, the kernel
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will run faster if you say N here.
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People using multiprocessor machines who say Y here should also say
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Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
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Management" code will be disabled if you say Y here.
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See also the <file:Documentation/smp.txt>,
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<file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
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<http://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config PREEMPT
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bool "Preemptible Kernel"
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help
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This option reduces the latency of the kernel when reacting to
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real-time or interactive events by allowing a low priority process to
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be preempted even if it is in kernel mode executing a system call.
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This allows applications to run more reliably even when the system is
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under load.
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Say Y here if you are building a kernel for a desktop, embedded
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or real-time system. Say N if you are unsure.
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config NR_CPUS
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int "Maximum number of CPUs (2-64)"
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range 2 64
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depends on SMP
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default "32"
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source "drivers/cpufreq/Kconfig"
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config US3_FREQ
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tristate "UltraSPARC-III CPU Frequency driver"
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depends on CPU_FREQ
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select CPU_FREQ_TABLE
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help
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This adds the CPUFreq driver for UltraSPARC-III processors.
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For details, take a look at <file:Documentation/cpu-freq>.
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If in doubt, say N.
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config US2E_FREQ
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tristate "UltraSPARC-IIe CPU Frequency driver"
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depends on CPU_FREQ
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select CPU_FREQ_TABLE
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help
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This adds the CPUFreq driver for UltraSPARC-IIe processors.
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For details, take a look at <file:Documentation/cpu-freq>.
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If in doubt, say N.
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# Global things across all Sun machines.
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config RWSEM_GENERIC_SPINLOCK
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bool
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config RWSEM_XCHGADD_ALGORITHM
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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choice
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prompt "SPARC64 Huge TLB Page Size"
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depends on HUGETLB_PAGE
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default HUGETLB_PAGE_SIZE_4MB
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config HUGETLB_PAGE_SIZE_4MB
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bool "4MB"
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config HUGETLB_PAGE_SIZE_512K
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depends on !SPARC64_PAGE_SIZE_4MB
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bool "512K"
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config HUGETLB_PAGE_SIZE_64K
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depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
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bool "64K"
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endchoice
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endmenu
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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config ARCH_SPARSEMEM_DEFAULT
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def_bool y
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config LARGE_ALLOCS
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def_bool y
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source "mm/Kconfig"
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config GENERIC_ISA_DMA
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bool
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default y
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config ISA
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bool
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help
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Find out whether you have ISA slots on your motherboard. ISA is the
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name of a bus system, i.e. the way the CPU talks to the other stuff
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inside your box. Other bus systems are PCI, EISA, MicroChannel
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(MCA) or VESA. ISA is an older system, now being displaced by PCI;
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newer boards don't support it. If you have ISA, say Y, otherwise N.
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config ISAPNP
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bool
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help
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Say Y here if you would like support for ISA Plug and Play devices.
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Some information is in <file:Documentation/isapnp.txt>.
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To compile this driver as a module, choose M here: the
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module will be called isapnp.
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If unsure, say Y.
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config EISA
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bool
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---help---
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The Extended Industry Standard Architecture (EISA) bus was
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developed as an open alternative to the IBM MicroChannel bus.
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The EISA bus provided some of the features of the IBM MicroChannel
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bus while maintaining backward compatibility with cards made for
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the older ISA bus. The EISA bus saw limited use between 1988 and
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1995 when it was made obsolete by the PCI bus.
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Say Y here if you are building a kernel for an EISA-based machine.
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Otherwise, say N.
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config MCA
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bool
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help
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MicroChannel Architecture is found in some IBM PS/2 machines and
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laptops. It is a bus system similar to PCI or ISA. See
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<file:Documentation/mca.txt> (and especially the web page given
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there) before attempting to build an MCA bus kernel.
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config PCMCIA
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tristate
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---help---
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Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
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computer. These are credit-card size devices such as network cards,
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modems or hard drives often used with laptops computers. There are
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actually two varieties of these cards: the older 16 bit PCMCIA cards
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and the newer 32 bit CardBus cards. If you want to use CardBus
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cards, you need to say Y here and also to "CardBus support" below.
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To use your PC-cards, you will need supporting software from David
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Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
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for location). Please also read the PCMCIA-HOWTO, available from
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<http://www.tldp.org/docs.html#howto>.
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To compile this driver as modules, choose M here: the
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modules will be called pcmcia_core and ds.
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config SBUS
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bool
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default y
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config SBUSCHAR
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bool
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default y
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config SUN_AUXIO
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bool
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default y
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config SUN_IO
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bool
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default y
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config PCI
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bool "PCI support"
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help
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Find out whether you have a PCI motherboard. PCI is the name of a
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bus system, i.e. the way the CPU talks to the other stuff inside
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your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
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VESA. If you have PCI, say Y, otherwise N.
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The PCI-HOWTO, available from
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<http://www.tldp.org/docs.html#howto>, contains valuable
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information about which PCI hardware does work under Linux and which
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doesn't.
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config PCI_DOMAINS
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bool
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default PCI
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source "drivers/pci/Kconfig"
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config SUN_OPENPROMFS
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tristate "Openprom tree appears in /proc/openprom"
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help
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If you say Y, the OpenPROM device tree will be available as a
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virtual file system, which you can mount to /proc/openprom by "mount
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-t openpromfs none /proc/openprom".
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To compile the /proc/openprom support as a module, choose M here: the
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module will be called openpromfs. If unsure, choose M.
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config SPARC32_COMPAT
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bool "Kernel support for Linux/Sparc 32bit binary compatibility"
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help
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This allows you to run 32-bit binaries on your Ultra.
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Everybody wants this; say Y.
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config COMPAT
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bool
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depends on SPARC32_COMPAT
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default y
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config BINFMT_ELF32
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tristate "Kernel support for 32-bit ELF binaries"
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depends on SPARC32_COMPAT
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help
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This allows you to run 32-bit Linux/ELF binaries on your Ultra.
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Everybody wants this; say Y.
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config BINFMT_AOUT32
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bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
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depends on SPARC32_COMPAT
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help
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This allows you to run 32-bit a.out format binaries on your Ultra.
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If you want to run SunOS binaries (see SunOS binary emulation below)
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or other a.out binaries, say Y. If unsure, say N.
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menu "Executable file formats"
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source "fs/Kconfig.binfmt"
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config SUNOS_EMUL
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bool "SunOS binary emulation"
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depends on BINFMT_AOUT32
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help
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This allows you to run most SunOS binaries. If you want to do this,
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say Y here and place appropriate files in /usr/gnemul/sunos. See
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<http://www.ultralinux.org/faq.html> for more information. If you
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want to run SunOS binaries on an Ultra you must also say Y to
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"Kernel support for 32-bit a.out binaries" above.
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config SOLARIS_EMUL
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tristate "Solaris binary emulation (EXPERIMENTAL)"
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depends on SPARC32_COMPAT && EXPERIMENTAL
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help
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This is experimental code which will enable you to run (many)
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Solaris binaries on your SPARC Linux machine.
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To compile this code as a module, choose M here: the
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module will be called solaris.
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endmenu
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config SCHED_SMT
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bool "SMT (Hyperthreading) scheduler support"
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depends on SMP
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default y
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help
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SMT scheduler support improves the CPU scheduler's decision making
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when dealing with UltraSPARC cpus at a cost of slightly increased
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overhead in some places. If unsure say N here.
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config CMDLINE_BOOL
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bool "Default bootloader kernel arguments"
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config CMDLINE
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string "Initial kernel command string"
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depends on CMDLINE_BOOL
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default "console=ttyS0,9600 root=/dev/sda1"
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help
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Say Y here if you want to be able to pass default arguments to
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the kernel. This will be overridden by the bootloader, if you
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use one (such as SILO). This is most useful if you want to boot
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a kernel from TFTP, and want default options to be available
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with having them passed on the command line.
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NOTE: This option WILL override the PROM bootargs setting!
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source "net/Kconfig"
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source "drivers/Kconfig"
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source "drivers/sbus/char/Kconfig"
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source "drivers/fc4/Kconfig"
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source "fs/Kconfig"
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menu "Instrumentation Support"
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depends on EXPERIMENTAL
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source "arch/sparc64/oprofile/Kconfig"
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config KPROBES
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bool "Kprobes (EXPERIMENTAL)"
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depends on EXPERIMENTAL && MODULES
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help
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Kprobes allows you to trap at almost any kernel address and
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execute a callback function. register_kprobe() establishes
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a probepoint and specifies the callback. Kprobes is useful
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for kernel debugging, non-intrusive instrumentation and testing.
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If in doubt, say "N".
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endmenu
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source "arch/sparc64/Kconfig.debug"
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source "security/Kconfig"
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source "crypto/Kconfig"
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source "lib/Kconfig"
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