# For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # mainmenu "Linux/SPARC Kernel Configuration" config SPARC bool default y select HAVE_IDE select HAVE_OPROFILE select HAVE_ARCH_KGDB if !SMP || SPARC64 select HAVE_ARCH_TRACEHOOK select ARCH_WANT_OPTIONAL_GPIOLIB select RTC_CLASS select RTC_DRV_M48T59 # Identify this as a Sparc32 build config SPARC32 bool default y if ARCH = "sparc" help SPARC is a family of RISC microprocessors designed and marketed by Sun Microsystems, incorporated. They are very widely found in Sun workstations and clones. This port covers the original 32-bit SPARC; it is old and stable and usually considered one of the "big three" along with the Intel and Alpha ports. The UltraLinux project maintains both the SPARC32 and SPARC64 ports; its web page is available at . config SPARC64 bool default y if ARCH = "sparc64" select HAVE_FUNCTION_TRACER select HAVE_KRETPROBES select HAVE_KPROBES select HAVE_LMB select USE_GENERIC_SMP_HELPERS if SMP select RTC_DRV_CMOS select RTC_DRV_BQ4802 select RTC_DRV_SUN4V select RTC_DRV_STARFIRE config 64BIT def_bool y if SPARC64 config GENERIC_TIME bool default y if SPARC64 config GENERIC_CMOS_UPDATE bool default y if SPARC64 config GENERIC_CLOCKEVENTS bool default y if SPARC64 config IOMMU_HELPER bool default y if SPARC64 config QUICKLIST bool default y if SPARC64 config STACKTRACE_SUPPORT bool default y if SPARC64 config LOCKDEP_SUPPORT bool default y if SPARC64 config AUDIT_ARCH bool default y if SPARC64 config HAVE_SETUP_PER_CPU_AREA def_bool y if SPARC64 config GENERIC_HARDIRQS_NO__DO_IRQ bool def_bool y if SPARC64 config MMU bool default y config HIGHMEM bool default y if SPARC32 config ZONE_DMA bool default y if SPARC32 config GENERIC_ISA_DMA bool default y if SPARC32 config GENERIC_GPIO bool help Generic GPIO API support config ARCH_NO_VIRT_TO_BUS def_bool y config OF def_bool y source "init/Kconfig" source "kernel/Kconfig.freezer" menu "Processor type and features" config SMP bool "Symmetric multi-processing support (does not work on sun4/sun4c)" ---help--- This enables support for systems with more than one CPU. If you have a system with only one CPU, 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. The "Advanced Power Management" code will be disabled if you say Y here. See also and the SMP-HOWTO available at . If you don't know what to do here, say N. config NR_CPUS int "Maximum number of CPUs" depends on SMP range 2 32 if SPARC32 range 2 1024 if SPARC64 default 32 if SPARC32 default 64 if SPARC64 source kernel/Kconfig.hz config RWSEM_GENERIC_SPINLOCK bool default y if SPARC32 config RWSEM_XCHGADD_ALGORITHM bool default y if SPARC64 config GENERIC_FIND_NEXT_BIT bool default y config GENERIC_HWEIGHT bool default y if !ULTRA_HAS_POPULATION_COUNT config GENERIC_CALIBRATE_DELAY bool default y config ARCH_MAY_HAVE_PC_FDC bool default y config ARCH_HAS_ILOG2_U32 bool default n config ARCH_HAS_ILOG2_U64 bool default n config EMULATED_CMPXCHG bool default y if SPARC32 help Sparc32 does not have a CAS instruction like sparc64. cmpxchg() is emulated, and therefore it is not completely atomic. choice prompt "Kernel page size" if SPARC64 default SPARC64_PAGE_SIZE_8KB config SPARC64_PAGE_SIZE_8KB bool "8KB" help This lets you select the page size of the kernel. 8KB and 64KB work quite well, since SPARC ELF sections provide for up to 64KB alignment. If you don't know what to do, choose 8KB. config SPARC64_PAGE_SIZE_64KB bool "64KB" endchoice config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on SPARC64 && PROC_FS default y help This kernel feature is useful for number crunching applications that may need to compute untrusted bytecode during their execution. By using pipes or other transports made available to the process as file descriptors supporting the read/write syscalls, it's possible to isolate those applications in their own address space using seccomp. Once seccomp is enabled via /proc//seccomp, it cannot be disabled and the task is only allowed to execute a few safe syscalls defined by each seccomp mode. If unsure, say Y. Only embedded should say N here. config HOTPLUG_CPU bool "Support for hot-pluggable CPUs" depends on SPARC64 && SMP select HOTPLUG help Say Y here to experiment with turning CPUs off and on. CPUs can be controlled through /sys/devices/system/cpu/cpu#. Say N if you want to disable CPU hotplug. config GENERIC_HARDIRQS bool default y if SPARC64 source "kernel/time/Kconfig" if SPARC64 source "drivers/cpufreq/Kconfig" config US3_FREQ tristate "UltraSPARC-III CPU Frequency driver" depends on CPU_FREQ select CPU_FREQ_TABLE help This adds the CPUFreq driver for UltraSPARC-III processors. For details, take a look at . If in doubt, say N. config US2E_FREQ tristate "UltraSPARC-IIe CPU Frequency driver" depends on CPU_FREQ select CPU_FREQ_TABLE help This adds the CPUFreq driver for UltraSPARC-IIe processors. For details, take a look at . If in doubt, say N. endif config US3_MC tristate "UltraSPARC-III Memory Controller driver" depends on SPARC64 default y help This adds a driver for the UltraSPARC-III memory controller. Loading this driver allows exact mnemonic strings to be printed in the event of a memory error, so that the faulty DIMM on the motherboard can be matched to the error. If in doubt, say Y, as this information can be very useful. # Global things across all Sun machines. config GENERIC_LOCKBREAK bool default y depends on SPARC64 && SMP && PREEMPT choice prompt "SPARC64 Huge TLB Page Size" depends on SPARC64 && HUGETLB_PAGE default HUGETLB_PAGE_SIZE_4MB config HUGETLB_PAGE_SIZE_4MB bool "4MB" config HUGETLB_PAGE_SIZE_512K bool "512K" config HUGETLB_PAGE_SIZE_64K depends on !SPARC64_PAGE_SIZE_64KB bool "64K" endchoice config NUMA bool "NUMA support" depends on SPARC64 && SMP config NODES_SHIFT int default "4" depends on NEED_MULTIPLE_NODES # Some NUMA nodes have memory ranges that span # other nodes. Even though a pfn is valid and # between a node's start and end pfns, it may not # reside on that node. See memmap_init_zone() # for details. config NODES_SPAN_OTHER_NODES def_bool y depends on NEED_MULTIPLE_NODES config ARCH_POPULATES_NODE_MAP def_bool y if SPARC64 config ARCH_SELECT_MEMORY_MODEL def_bool y if SPARC64 config ARCH_SPARSEMEM_ENABLE def_bool y if SPARC64 select SPARSEMEM_VMEMMAP_ENABLE config ARCH_SPARSEMEM_DEFAULT def_bool y if SPARC64 source "mm/Kconfig" config SCHED_SMT bool "SMT (Hyperthreading) scheduler support" depends on SPARC64 && SMP default y help SMT scheduler support improves the CPU scheduler's decision making when dealing with SPARC cpus at a cost of slightly increased overhead in some places. If unsure say N here. config SCHED_MC bool "Multi-core scheduler support" depends on SPARC64 && SMP default y help Multi-core scheduler support improves the CPU scheduler's decision making when dealing with multi-core CPU chips at a cost of slightly increased overhead in some places. If unsure say N here. if SPARC64 source "kernel/Kconfig.preempt" endif config CMDLINE_BOOL bool "Default bootloader kernel arguments" depends on SPARC64 config CMDLINE string "Initial kernel command string" depends on CMDLINE_BOOL default "console=ttyS0,9600 root=/dev/sda1" help Say Y here if you want to be able to pass default arguments to the kernel. This will be overridden by the bootloader, if you use one (such as SILO). This is most useful if you want to boot a kernel from TFTP, and want default options to be available with having them passed on the command line. NOTE: This option WILL override the PROM bootargs setting! config SUN_PM bool default y if SPARC32 help Enable power management and CPU standby features on supported SPARC platforms. config SPARC_LED tristate "Sun4m LED driver" depends on SPARC32 help This driver toggles the front-panel LED on sun4m systems in a user-specifiable manner. Its state can be probed by reading /proc/led and its blinking mode can be changed via writes to /proc/led config SERIAL_CONSOLE bool depends on SPARC32 default y ---help--- If you say Y here, it will be possible to use a serial port as the system console (the system console is the device which receives all kernel messages and warnings and which allows logins in single user mode). This could be useful if some terminal or printer is connected to that serial port. Even if you say Y here, the currently visible virtual console (/dev/tty0) will still be used as the system console by default, but you can alter that using a kernel command line option such as "console=ttyS1". (Try "man bootparam" or see the documentation of your boot loader (silo) about how to pass options to the kernel at boot time.) If you don't have a graphics card installed and you say Y here, the kernel will automatically use the first serial line, /dev/ttyS0, as system console. If unsure, say N. endmenu menu "Bus options (PCI etc.)" config ISA bool help ISA is found on Espresso only and is not supported currently. config ISAPNP bool help ISAPNP is not supported config EISA bool help EISA is not supported. config MCA bool help MCA is not supported. config PCMCIA tristate ---help--- Say Y here if you want to attach PCMCIA- or PC-cards to your Linux computer. These are credit-card size devices such as network cards, modems or hard drives often used with laptops computers. There are actually two varieties of these cards: the older 16 bit PCMCIA cards and the newer 32 bit CardBus cards. If you want to use CardBus cards, you need to say Y here and also to "CardBus support" below. To use your PC-cards, you will need supporting software from David Hinds' pcmcia-cs package (see the file for location). Please also read the PCMCIA-HOWTO, available from . To compile this driver as modules, choose M here: the modules will be called pcmcia_core and ds. config SBUS bool default y config SBUSCHAR bool default y config SUN_AUXIO bool default y config SUN_IO bool default y config SUN_LDOMS bool "Sun Logical Domains support" depends on SPARC64 help Say Y here is you want to support virtual devices via Logical Domains. config PCI bool "Support for PCI and PS/2 keyboard/mouse" select ARCH_SUPPORTS_MSI if SPARC64 help Find out whether your system includes a PCI bus. PCI is the name of a bus system, i.e. the way the CPU talks to the other stuff inside your box. If you say Y here, the kernel will include drivers and infrastructure code to support PCI bus devices. CONFIG_PCI is needed for all JavaStation's (including MrCoffee), CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. All of these platforms are extremely obscure, so say N if unsure. config PCI_DOMAINS def_bool PCI if SPARC64 config PCI_SYSCALL def_bool PCI source "drivers/pci/Kconfig" config SUN_OPENPROMFS tristate "Openprom tree appears in /proc/openprom" help If you say Y, the OpenPROM device tree will be available as a virtual file system, which you can mount to /proc/openprom by "mount -t openpromfs none /proc/openprom". To compile the /proc/openprom support as a module, choose M here: the module will be called openpromfs. Only choose N if you know in advance that you will not need to modify OpenPROM settings on the running system. endmenu menu "Executable file formats" source "fs/Kconfig.binfmt" config COMPAT bool depends on SPARC64 default y select COMPAT_BINFMT_ELF config SYSVIPC_COMPAT bool depends on COMPAT && SYSVIPC default y endmenu source "net/Kconfig" source "drivers/Kconfig" source "drivers/sbus/char/Kconfig" source "fs/Kconfig" source "arch/sparc/Kconfig.debug" source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig"