mirror of https://gitee.com/openkylin/linux.git
560 lines
12 KiB
Plaintext
560 lines
12 KiB
Plaintext
# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.txt.
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#
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mainmenu "Linux/SPARC Kernel Configuration"
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config SPARC
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bool
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default y
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select HAVE_IDE
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select HAVE_OPROFILE
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select HAVE_ARCH_KGDB if !SMP || SPARC64
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select HAVE_ARCH_TRACEHOOK
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select ARCH_WANT_OPTIONAL_GPIOLIB
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select RTC_CLASS
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select RTC_DRV_M48T59
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# Identify this as a Sparc32 build
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config SPARC32
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bool
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default y if ARCH = "sparc"
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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. They are very widely found in Sun
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workstations and clones. This port covers the original 32-bit SPARC;
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it is old and stable and usually considered one of the "big three"
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along with the Intel and Alpha ports. The UltraLinux project
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maintains both the SPARC32 and SPARC64 ports; its web page is
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available at <http://www.ultralinux.org/>.
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config SPARC64
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bool
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default y if ARCH = "sparc64"
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select HAVE_FUNCTION_TRACER
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select HAVE_KRETPROBES
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select HAVE_KPROBES
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select HAVE_LMB
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select USE_GENERIC_SMP_HELPERS if SMP
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select RTC_DRV_CMOS
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select RTC_DRV_BQ4802
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select RTC_DRV_SUN4V
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select RTC_DRV_STARFIRE
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config ARCH_DEFCONFIG
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string
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default "arch/sparc/configs/sparc32_defconfig" if SPARC32
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default "arch/sparc/configs/sparc64_defconfig" if SPARC64
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config 64BIT
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def_bool y if SPARC64
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config GENERIC_TIME
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bool
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default y if SPARC64
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config GENERIC_CMOS_UPDATE
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bool
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default y if SPARC64
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config GENERIC_CLOCKEVENTS
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bool
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default y if SPARC64
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config IOMMU_HELPER
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bool
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default y if SPARC64
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config QUICKLIST
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bool
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default y if SPARC64
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config STACKTRACE_SUPPORT
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bool
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default y if SPARC64
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config LOCKDEP_SUPPORT
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bool
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default y if SPARC64
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config HAVE_LATENCYTOP_SUPPORT
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bool
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default y if SPARC64
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config AUDIT_ARCH
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bool
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default y
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config HAVE_SETUP_PER_CPU_AREA
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def_bool y if SPARC64
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config GENERIC_HARDIRQS_NO__DO_IRQ
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bool
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def_bool y if SPARC64
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config MMU
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bool
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default y
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config HIGHMEM
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bool
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default y if SPARC32
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config ZONE_DMA
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bool
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default y if SPARC32
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config GENERIC_ISA_DMA
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bool
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default y if SPARC32
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config GENERIC_GPIO
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bool
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help
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Generic GPIO API support
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config ARCH_NO_VIRT_TO_BUS
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def_bool y
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config OF
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def_bool y
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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menu "Processor type and features"
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config SMP
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bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
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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
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than 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 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
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available at <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 NR_CPUS
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int "Maximum number of CPUs"
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depends on SMP
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range 2 32 if SPARC32
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range 2 1024 if SPARC64
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default 32 if SPARC32
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default 64 if SPARC64
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source kernel/Kconfig.hz
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config RWSEM_GENERIC_SPINLOCK
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bool
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default y if SPARC32
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config RWSEM_XCHGADD_ALGORITHM
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bool
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default y if SPARC64
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config GENERIC_FIND_NEXT_BIT
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bool
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default y
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config GENERIC_HWEIGHT
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bool
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default y if !ULTRA_HAS_POPULATION_COUNT
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config GENERIC_CALIBRATE_DELAY
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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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config ARCH_HAS_ILOG2_U32
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bool
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default n
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config ARCH_HAS_ILOG2_U64
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bool
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default n
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config EMULATED_CMPXCHG
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bool
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default y if SPARC32
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help
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Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
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is emulated, and therefore it is not completely atomic.
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# Makefile helpers
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config SPARC32_SMP
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bool
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default y
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depends on SPARC32 && SMP
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config SPARC64_SMP
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bool
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default y
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depends on SPARC64 && SMP
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choice
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prompt "Kernel page size" if SPARC64
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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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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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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 SPARC64 && 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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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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depends on SPARC64 && SMP
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select HOTPLUG
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help
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Say Y here to experiment with turning CPUs off and on. CPUs
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can be controlled through /sys/devices/system/cpu/cpu#.
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Say N if you want to disable CPU hotplug.
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config GENERIC_HARDIRQS
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bool
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default y if SPARC64
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source "kernel/time/Kconfig"
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if SPARC64
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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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endif
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config US3_MC
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tristate "UltraSPARC-III Memory Controller driver"
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depends on SPARC64
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default y
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help
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This adds a driver for the UltraSPARC-III memory controller.
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Loading this driver allows exact mnemonic strings to be
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printed in the event of a memory error, so that the faulty DIMM
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on the motherboard can be matched to the error.
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If in doubt, say Y, as this information can be very useful.
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# Global things across all Sun machines.
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config GENERIC_LOCKBREAK
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bool
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default y
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depends on SPARC64 && SMP && PREEMPT
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choice
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prompt "SPARC64 Huge TLB Page Size"
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depends on SPARC64 && 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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bool "512K"
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config HUGETLB_PAGE_SIZE_64K
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depends on !SPARC64_PAGE_SIZE_64KB
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bool "64K"
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endchoice
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config NUMA
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bool "NUMA support"
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depends on SPARC64 && SMP
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config NODES_SHIFT
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int
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default "4"
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depends on NEED_MULTIPLE_NODES
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# Some NUMA nodes have memory ranges that span
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# other nodes. Even though a pfn is valid and
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# between a node's start and end pfns, it may not
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# reside on that node. See memmap_init_zone()
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# for details.
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config NODES_SPAN_OTHER_NODES
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def_bool y
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depends on NEED_MULTIPLE_NODES
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config ARCH_POPULATES_NODE_MAP
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def_bool y if SPARC64
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config ARCH_SELECT_MEMORY_MODEL
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def_bool y if SPARC64
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config ARCH_SPARSEMEM_ENABLE
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def_bool y if SPARC64
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select SPARSEMEM_VMEMMAP_ENABLE
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config ARCH_SPARSEMEM_DEFAULT
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def_bool y if SPARC64
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source "mm/Kconfig"
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config SCHED_SMT
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bool "SMT (Hyperthreading) scheduler support"
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depends on SPARC64 && 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 SPARC cpus at a cost of slightly increased overhead
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in some places. If unsure say N here.
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config SCHED_MC
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bool "Multi-core scheduler support"
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depends on SPARC64 && SMP
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default y
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help
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Multi-core scheduler support improves the CPU scheduler's decision
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making when dealing with multi-core CPU chips at a cost of slightly
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increased overhead in some places. If unsure say N here.
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if SPARC64
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source "kernel/Kconfig.preempt"
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endif
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config CMDLINE_BOOL
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bool "Default bootloader kernel arguments"
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depends on SPARC64
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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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config SUN_PM
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bool
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default y if SPARC32
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help
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Enable power management and CPU standby features on supported
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SPARC platforms.
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config SPARC_LED
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tristate "Sun4m LED driver"
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depends on SPARC32
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help
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This driver toggles the front-panel LED on sun4m systems
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in a user-specifiable manner. Its state can be probed
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by reading /proc/led and its blinking mode can be changed
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via writes to /proc/led
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config SERIAL_CONSOLE
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bool
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depends on SPARC32
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default y
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---help---
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If you say Y here, it will be possible to use a serial port as the
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system console (the system console is the device which receives all
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kernel messages and warnings and which allows logins in single user
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mode). This could be useful if some terminal or printer is connected
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to that serial port.
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Even if you say Y here, the currently visible virtual console
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(/dev/tty0) will still be used as the system console by default, but
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you can alter that using a kernel command line option such as
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"console=ttyS1". (Try "man bootparam" or see the documentation of
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your boot loader (silo) about how to pass options to the kernel at
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boot time.)
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If you don't have a graphics card installed and you say Y here, the
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kernel will automatically use the first serial line, /dev/ttyS0, as
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system console.
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If unsure, say N.
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endmenu
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menu "Bus options (PCI etc.)"
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config ISA
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bool
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help
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ISA is found on Espresso only and is not supported currently.
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config ISAPNP
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bool
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help
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ISAPNP is not supported
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config EISA
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bool
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help
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EISA is not supported.
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config MCA
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bool
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help
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MCA is not supported.
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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_IO
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bool
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default y
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config SUN_LDOMS
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bool "Sun Logical Domains support"
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depends on SPARC64
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help
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Say Y here is you want to support virtual devices via
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Logical Domains.
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config PCI
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bool "Support for PCI and PS/2 keyboard/mouse"
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select ARCH_SUPPORTS_MSI if SPARC64
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help
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Find out whether your system includes a PCI bus. PCI is the name of
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a bus system, i.e. the way the CPU talks to the other stuff inside
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your box. If you say Y here, the kernel will include drivers and
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infrastructure code to support PCI bus devices.
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CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
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CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
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All of these platforms are extremely obscure, so say N if unsure.
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config PCI_DOMAINS
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def_bool PCI if SPARC64
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config PCI_SYSCALL
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def_bool PCI
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source "drivers/pci/Kconfig"
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source "drivers/pcmcia/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.
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Only choose N if you know in advance that you will not need to modify
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OpenPROM settings on the running system.
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# Makefile helpers
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config SPARC32_PCI
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bool
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default y
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depends on SPARC32 && PCI
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config SPARC64_PCI
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bool
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default y
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depends on SPARC64 && PCI
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endmenu
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menu "Executable file formats"
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source "fs/Kconfig.binfmt"
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config COMPAT
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bool
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depends on SPARC64
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default y
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select COMPAT_BINFMT_ELF
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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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endmenu
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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 "fs/Kconfig"
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source "arch/sparc/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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