config MIPS bool default y # Horrible source of confusion. Die, die, die ... select EMBEDDED select RTC_LIB mainmenu "Linux/MIPS Kernel Configuration" menu "Machine selection" config ZONE_DMA bool choice prompt "System type" default SGI_IP22 config MACH_ALCHEMY bool "Alchemy processor based machines" config BASLER_EXCITE bool "Basler eXcite smart camera" select CEVT_R4K select DMA_COHERENT select HW_HAS_PCI select IRQ_CPU select IRQ_CPU_RM7K select IRQ_CPU_RM9K select MIPS_RM9122 select SYS_HAS_CPU_RM9000 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_KGDB help The eXcite is a smart camera platform manufactured by Basler Vision Technologies AG. config BASLER_EXCITE_PROTOTYPE bool "Support for pre-release units" depends on BASLER_EXCITE default n help Pre-series (prototype) units are different from later ones in some ways. Select this option if you have one of these. Please note that a kernel built with this option selected will not be able to run on normal units. config BCM47XX bool "BCM47XX based boards" select CEVT_R4K select DMA_NONCOHERENT select HW_HAS_PCI select IRQ_CPU select SYS_HAS_CPU_MIPS32_R1 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_LITTLE_ENDIAN select SSB select SSB_DRIVER_MIPS select GENERIC_GPIO select SYS_HAS_EARLY_PRINTK select CFE help Support for BCM47XX based boards config MIPS_COBALT bool "Cobalt Server" select CEVT_R4K select CEVT_GT641XX select DMA_NONCOHERENT select HW_HAS_PCI select I8253 select I8259 select IRQ_CPU select IRQ_GT641XX select PCI_GT64XXX_PCI0 select SYS_HAS_CPU_NEVADA select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL select SYS_SUPPORTS_LITTLE_ENDIAN select GENERIC_HARDIRQS_NO__DO_IRQ config MACH_DECSTATION bool "DECstations" select BOOT_ELF32 select CEVT_R4K select DMA_NONCOHERENT select NO_IOPORT select IRQ_CPU select SYS_HAS_CPU_R3000 select SYS_HAS_CPU_R4X00 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_128HZ select SYS_SUPPORTS_256HZ select SYS_SUPPORTS_1024HZ help This enables support for DEC's MIPS based workstations. For details see the Linux/MIPS FAQ on and the DECstation porting pages on . If you have one of the following DECstation Models you definitely want to choose R4xx0 for the CPU Type: DECstation 5000/50 DECstation 5000/150 DECstation 5000/260 DECsystem 5900/260 otherwise choose R3000. config MACH_JAZZ bool "Jazz family of machines" select ARC select ARC32 select ARCH_MAY_HAVE_PC_FDC select CEVT_R4K select GENERIC_ISA_DMA select IRQ_CPU select I8253 select I8259 select ISA select PCSPEAKER select SYS_HAS_CPU_R4X00 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL select SYS_SUPPORTS_100HZ select GENERIC_HARDIRQS_NO__DO_IRQ help This a family of machines based on the MIPS R4030 chipset which was used by several vendors to build RISC/os and Windows NT workstations. Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and Olivetti M700-10 workstations. config LASAT bool "LASAT Networks platforms" select CEVT_R4K select DMA_NONCOHERENT select SYS_HAS_EARLY_PRINTK select HW_HAS_PCI select IRQ_CPU select PCI_GT64XXX_PCI0 select MIPS_NILE4 select R5000_CPU_SCACHE select SYS_HAS_CPU_R5000 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL if BROKEN select SYS_SUPPORTS_LITTLE_ENDIAN select GENERIC_HARDIRQS_NO__DO_IRQ config LEMOTE_FULONG bool "Lemote Fulong mini-PC" select ARCH_SPARSEMEM_ENABLE select CEVT_R4K select SYS_HAS_CPU_LOONGSON2 select DMA_NONCOHERENT select BOOT_ELF32 select BOARD_SCACHE select HAVE_STD_PC_SERIAL_PORT select HW_HAS_PCI select I8259 select ISA select IRQ_CPU select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_HAS_EARLY_PRINTK select GENERIC_HARDIRQS_NO__DO_IRQ select GENERIC_ISA_DMA_SUPPORT_BROKEN select CPU_HAS_WB help Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and an FPGA northbridge config MIPS_ATLAS bool "MIPS Atlas board" select BOOT_ELF32 select CEVT_R4K select DMA_NONCOHERENT select SYS_HAS_EARLY_PRINTK select IRQ_CPU select HW_HAS_PCI select MIPS_BOARDS_GEN select MIPS_BONITO64 select PCI_GT64XXX_PCI0 select MIPS_MSC select RM7000_CPU_SCACHE select SWAP_IO_SPACE select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_CPU_MIPS32_R2 select SYS_HAS_CPU_MIPS64_R1 select SYS_HAS_CPU_NEVADA select SYS_HAS_CPU_RM7000 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL select SYS_SUPPORTS_SMARTMIPS select GENERIC_HARDIRQS_NO__DO_IRQ help This enables support for the MIPS Technologies Atlas evaluation board. config MIPS_MALTA bool "MIPS Malta board" select ARCH_MAY_HAVE_PC_FDC select BOOT_ELF32 select CEVT_R4K select DMA_NONCOHERENT select GENERIC_ISA_DMA select IRQ_CPU select HW_HAS_PCI select I8253 select I8259 select MIPS_BOARDS_GEN select MIPS_BONITO64 select MIPS_CPU_SCACHE select PCI_GT64XXX_PCI0 select MIPS_MSC select SWAP_IO_SPACE select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_CPU_MIPS32_R2 select SYS_HAS_CPU_MIPS64_R1 select SYS_HAS_CPU_NEVADA select SYS_HAS_CPU_RM7000 select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_MULTITHREADING select SYS_SUPPORTS_SMARTMIPS help This enables support for the MIPS Technologies Malta evaluation board. config MIPS_SEAD bool "MIPS SEAD board" select CEVT_R4K select IRQ_CPU select DMA_NONCOHERENT select SYS_HAS_EARLY_PRINTK select MIPS_BOARDS_GEN select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_CPU_MIPS32_R2 select SYS_HAS_CPU_MIPS64_R1 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_SMARTMIPS help This enables support for the MIPS Technologies SEAD evaluation board. config MIPS_SIM bool 'MIPS simulator (MIPSsim)' select CEVT_R4K select DMA_NONCOHERENT select SYS_HAS_EARLY_PRINTK select IRQ_CPU select BOOT_RAW select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_CPU_MIPS32_R2 select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_MULTITHREADING select SYS_SUPPORTS_LITTLE_ENDIAN help This option enables support for MIPS Technologies MIPSsim software emulator. config MARKEINS bool "NEC EMMA2RH Mark-eins" select CEVT_R4K select DMA_NONCOHERENT select HW_HAS_PCI select IRQ_CPU select SWAP_IO_SPACE select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_HAS_CPU_R5000 help This enables support for the R5432-based NEC Mark-eins boards with R5500 CPU. config MACH_VR41XX bool "NEC VR4100 series based machines" select CEVT_R4K select SYS_HAS_CPU_VR41XX select GENERIC_HARDIRQS_NO__DO_IRQ config PNX8550_JBS bool "Philips PNX8550 based JBS board" select PNX8550 select SYS_SUPPORTS_LITTLE_ENDIAN config PNX8550_STB810 bool "Philips PNX8550 based STB810 board" select PNX8550 select SYS_SUPPORTS_LITTLE_ENDIAN config PMC_MSP bool "PMC-Sierra MSP chipsets" depends on EXPERIMENTAL select DMA_NONCOHERENT select SWAP_IO_SPACE select NO_EXCEPT_FILL select BOOT_RAW select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_CPU_MIPS32_R2 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_KGDB select IRQ_CPU select SERIAL_8250 select SERIAL_8250_CONSOLE help This adds support for the PMC-Sierra family of Multi-Service Processor System-On-A-Chips. These parts include a number of integrated peripherals, interfaces and DSPs in addition to a variety of MIPS cores. config PMC_YOSEMITE bool "PMC-Sierra Yosemite eval board" select CEVT_R4K select DMA_COHERENT select HW_HAS_PCI select IRQ_CPU select IRQ_CPU_RM7K select IRQ_CPU_RM9K select SWAP_IO_SPACE select SYS_HAS_CPU_RM9000 select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_KGDB select SYS_SUPPORTS_SMP help Yosemite is an evaluation board for the RM9000x2 processor manufactured by PMC-Sierra. config QEMU bool "Qemu" select CEVT_R4K select DMA_COHERENT select GENERIC_ISA_DMA select HAVE_STD_PC_SERIAL_PORT select I8253 select I8259 select IRQ_CPU select ISA select PCSPEAKER select SWAP_IO_SPACE select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN select GENERIC_HARDIRQS_NO__DO_IRQ select NR_CPUS_DEFAULT_1 select SYS_SUPPORTS_SMP help Qemu is a software emulator which among other architectures also can simulate a MIPS32 4Kc system. This patch adds support for the system architecture that currently is being simulated by Qemu. It will eventually be removed again when Qemu has the capability to simulate actual MIPS hardware platforms. More information on Qemu can be found at http://www.linux-mips.org/wiki/Qemu. config SGI_IP22 bool "SGI IP22 (Indy/Indigo2)" select ARC select ARC32 select BOOT_ELF32 select CEVT_R4K select DMA_NONCOHERENT select HW_HAS_EISA select I8253 select IP22_CPU_SCACHE select IRQ_CPU select GENERIC_ISA_DMA_SUPPORT_BROKEN select SWAP_IO_SPACE select SYS_HAS_CPU_R4X00 select SYS_HAS_CPU_R5000 select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN help This are the SGI Indy, Challenge S and Indigo2, as well as certain OEM variants like the Tandem CMN B006S. To compile a Linux kernel that runs on these, say Y here. config SGI_IP27 bool "SGI IP27 (Origin200/2000)" select ARC select ARC64 select BOOT_ELF64 select DMA_IP27 select SYS_HAS_EARLY_PRINTK select HW_HAS_PCI select NR_CPUS_DEFAULT_64 select SYS_HAS_CPU_R10000 select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_KGDB select SYS_SUPPORTS_NUMA select SYS_SUPPORTS_SMP select GENERIC_HARDIRQS_NO__DO_IRQ help This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics workstations. To compile a Linux kernel that runs on these, say Y here. config SGI_IP32 bool "SGI IP32 (O2)" select ARC select ARC32 select BOOT_ELF32 select CEVT_R4K select DMA_NONCOHERENT select HW_HAS_PCI select IRQ_CPU select R5000_CPU_SCACHE select RM7000_CPU_SCACHE select SYS_HAS_CPU_R5000 select SYS_HAS_CPU_R10000 if BROKEN select SYS_HAS_CPU_RM7000 select SYS_HAS_CPU_NEVADA select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN help If you want this kernel to run on SGI O2 workstation, say Y here. config SIBYTE_CRHINE bool "Sibyte BCM91120C-CRhine" depends on EXPERIMENTAL select BOOT_ELF32 select DMA_COHERENT select SIBYTE_BCM1120 select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN config SIBYTE_CARMEL bool "Sibyte BCM91120x-Carmel" depends on EXPERIMENTAL select BOOT_ELF32 select DMA_COHERENT select SIBYTE_BCM1120 select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN config SIBYTE_CRHONE bool "Sibyte BCM91125C-CRhone" depends on EXPERIMENTAL select BOOT_ELF32 select DMA_COHERENT select SIBYTE_BCM1125 select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_LITTLE_ENDIAN config SIBYTE_RHONE bool "Sibyte BCM91125E-Rhone" depends on EXPERIMENTAL select BOOT_ELF32 select DMA_COHERENT select SIBYTE_BCM1125H select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN config SIBYTE_SWARM bool "Sibyte BCM91250A-SWARM" select BOOT_ELF32 select DMA_COHERENT select NR_CPUS_DEFAULT_2 select SIBYTE_SB1250 select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_KGDB select SYS_SUPPORTS_LITTLE_ENDIAN config SIBYTE_LITTLESUR bool "Sibyte BCM91250C2-LittleSur" depends on EXPERIMENTAL select BOOT_ELF32 select DMA_COHERENT select NR_CPUS_DEFAULT_2 select SIBYTE_SB1250 select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_LITTLE_ENDIAN config SIBYTE_SENTOSA bool "Sibyte BCM91250E-Sentosa" depends on EXPERIMENTAL select BOOT_ELF32 select DMA_COHERENT select NR_CPUS_DEFAULT_2 select SIBYTE_SB1250 select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN config SIBYTE_PTSWARM bool "Sibyte BCM91250PT-PTSWARM" depends on EXPERIMENTAL select BOOT_ELF32 select DMA_COHERENT select NR_CPUS_DEFAULT_2 select SIBYTE_SB1250 select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_LITTLE_ENDIAN config SIBYTE_BIGSUR bool "Sibyte BCM91480B-BigSur" select BOOT_ELF32 select DMA_COHERENT select NR_CPUS_DEFAULT_4 select SIBYTE_BCM1x80 select SWAP_IO_SPACE select SYS_HAS_CPU_SB1 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_LITTLE_ENDIAN config SNI_RM bool "SNI RM200/300/400" select ARC if CPU_LITTLE_ENDIAN select ARC32 if CPU_LITTLE_ENDIAN select ARCH_MAY_HAVE_PC_FDC select BOOT_ELF32 select CEVT_R4K select DMA_NONCOHERENT select GENERIC_ISA_DMA select HW_HAS_EISA select HW_HAS_PCI select IRQ_CPU select I8253 select I8259 select ISA select PCSPEAKER select SWAP_IO_SPACE if CPU_BIG_ENDIAN select SYS_HAS_CPU_R4X00 select SYS_HAS_CPU_R5000 select SYS_HAS_CPU_R10000 select R5000_CPU_SCACHE select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_LITTLE_ENDIAN help The SNI RM200/300/400 are MIPS-based machines manufactured by Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid Technology and now in turn merged with Fujitsu. Say Y here to support this machine type. config TOSHIBA_JMR3927 bool "Toshiba JMR-TX3927 board" select CEVT_TXX9 select DMA_NONCOHERENT select HW_HAS_PCI select MIPS_TX3927 select IRQ_TXX9 select SWAP_IO_SPACE select SYS_HAS_CPU_TX39XX select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_BIG_ENDIAN select GENERIC_HARDIRQS_NO__DO_IRQ config TOSHIBA_RBTX4927 bool "Toshiba RBTX49[23]7 board" select CEVT_R4K select CEVT_TXX9 select DMA_NONCOHERENT select HAS_TXX9_SERIAL select HW_HAS_PCI select IRQ_CPU select IRQ_TXX9 select I8259 if TOSHIBA_FPCIB0 select SWAP_IO_SPACE select SYS_HAS_CPU_TX49XX select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_KGDB select GENERIC_HARDIRQS_NO__DO_IRQ help This Toshiba board is based on the TX4927 processor. Say Y here to support this machine type config TOSHIBA_RBTX4938 bool "Toshiba RBTX4938 board" select CEVT_R4K select CEVT_TXX9 select DMA_NONCOHERENT select HAS_TXX9_SERIAL select HW_HAS_PCI select IRQ_CPU select IRQ_TXX9 select SWAP_IO_SPACE select SYS_HAS_CPU_TX49XX select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_KGDB select GENERIC_HARDIRQS_NO__DO_IRQ select GENERIC_GPIO help This Toshiba board is based on the TX4938 processor. Say Y here to support this machine type config WR_PPMC bool "Wind River PPMC board" select CEVT_R4K select IRQ_CPU select BOOT_ELF32 select DMA_NONCOHERENT select HW_HAS_PCI select PCI_GT64XXX_PCI0 select SWAP_IO_SPACE select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_CPU_MIPS32_R2 select SYS_HAS_CPU_MIPS64_R1 select SYS_HAS_CPU_NEVADA select SYS_HAS_CPU_RM7000 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN help This enables support for the Wind River MIPS32 4KC PPMC evaluation board, which is based on GT64120 bridge chip. endchoice source "arch/mips/au1000/Kconfig" source "arch/mips/jazz/Kconfig" source "arch/mips/lasat/Kconfig" source "arch/mips/pmc-sierra/Kconfig" source "arch/mips/sgi-ip27/Kconfig" source "arch/mips/sibyte/Kconfig" source "arch/mips/tx4927/Kconfig" source "arch/mips/tx4938/Kconfig" source "arch/mips/vr41xx/Kconfig" endmenu config RWSEM_GENERIC_SPINLOCK bool default y config RWSEM_XCHGADD_ALGORITHM bool config ARCH_HAS_ILOG2_U32 bool default n config ARCH_HAS_ILOG2_U64 bool default n config GENERIC_FIND_NEXT_BIT bool default y config GENERIC_HWEIGHT bool default y config GENERIC_CALIBRATE_DELAY bool default y config GENERIC_CLOCKEVENTS bool default y config GENERIC_TIME bool default y config GENERIC_CMOS_UPDATE bool default y config SCHED_NO_NO_OMIT_FRAME_POINTER bool default y config GENERIC_HARDIRQS_NO__DO_IRQ bool default n # # Select some configuration options automatically based on user selections. # config ARC bool config ARCH_MAY_HAVE_PC_FDC bool config BOOT_RAW bool config CEVT_BCM1480 bool config CEVT_GT641XX bool config CEVT_R4K bool config CEVT_SB1250 bool config CEVT_TXX9 bool config CSRC_BCM1480 bool config CSRC_SB1250 bool config CFE bool config DMA_COHERENT bool config DMA_IP27 bool config DMA_IP32 bool select DMA_NEED_PCI_MAP_STATE config DMA_NONCOHERENT bool select DMA_NEED_PCI_MAP_STATE config DMA_NEED_PCI_MAP_STATE bool config EARLY_PRINTK bool "Early printk" if EMBEDDED && DEBUG_KERNEL depends on SYS_HAS_EARLY_PRINTK default y help This option enables special console drivers which allow the kernel to print messages very early in the bootup process. This is useful for kernel debugging when your machine crashes very early before the console code is initialized. For normal operation, it is not recommended because it looks ugly on some machines and doesn't cooperate with an X server. You should normally say N here, unless you want to debug such a crash. config SYS_HAS_EARLY_PRINTK bool config HOTPLUG_CPU bool default n config I8259 bool config MIPS_BONITO64 bool config MIPS_MSC bool config MIPS_NILE4 bool config MIPS_DISABLE_OBSOLETE_IDE bool config NO_IOPORT def_bool n config GENERIC_ISA_DMA bool select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n config GENERIC_ISA_DMA_SUPPORT_BROKEN bool select GENERIC_ISA_DMA config GENERIC_GPIO bool # # Endianess selection. Sufficiently obscure so many users don't know what to # answer,so we try hard to limit the available choices. Also the use of a # choice statement should be more obvious to the user. # choice prompt "Endianess selection" help Some MIPS machines can be configured for either little or big endian byte order. These modes require different kernels and a different Linux distribution. In general there is one preferred byteorder for a particular system but some systems are just as commonly used in the one or the other endianness. config CPU_BIG_ENDIAN bool "Big endian" depends on SYS_SUPPORTS_BIG_ENDIAN config CPU_LITTLE_ENDIAN bool "Little endian" depends on SYS_SUPPORTS_LITTLE_ENDIAN help endchoice config SYS_SUPPORTS_APM_EMULATION bool config SYS_SUPPORTS_BIG_ENDIAN bool config SYS_SUPPORTS_LITTLE_ENDIAN bool config IRQ_CPU bool config IRQ_CPU_RM7K bool config IRQ_CPU_RM9K bool config IRQ_MSP_SLP bool config IRQ_MSP_CIC bool config IRQ_TXX9 bool config IRQ_GT641XX bool config MIPS_BOARDS_GEN bool config PCI_GT64XXX_PCI0 bool config NO_EXCEPT_FILL bool config MIPS_TX3927 bool select HAS_TXX9_SERIAL config MIPS_RM9122 bool select SERIAL_RM9000 config PNX8550 bool select SOC_PNX8550 config SOC_PNX8550 bool select DMA_NONCOHERENT select HW_HAS_PCI select SYS_HAS_CPU_MIPS32_R1 select SYS_HAS_EARLY_PRINTK select SYS_SUPPORTS_32BIT_KERNEL select GENERIC_HARDIRQS_NO__DO_IRQ select SYS_SUPPORTS_KGDB select GENERIC_GPIO config SWAP_IO_SPACE bool config EMMA2RH bool depends on MARKEINS default y config SERIAL_RM9000 bool config ARC32 bool config BOOT_ELF32 bool config MIPS_L1_CACHE_SHIFT int default "4" if MACH_DECSTATION default "7" if SGI_IP27 || SNI_RM default "4" if PMC_MSP4200_EVAL default "5" config HAVE_STD_PC_SERIAL_PORT bool config ARC_CONSOLE bool "ARC console support" depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN) config ARC_MEMORY bool depends on MACH_JAZZ || SNI_RM || SGI_IP32 default y config ARC_PROMLIB bool depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32 default y config ARC64 bool config BOOT_ELF64 bool menu "CPU selection" source "kernel/time/Kconfig" choice prompt "CPU type" default CPU_R4X00 config CPU_LOONGSON2 bool "Loongson 2" depends on SYS_HAS_CPU_LOONGSON2 select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL select CPU_SUPPORTS_HIGHMEM help The Loongson 2E processor implements the MIPS III instruction set with many extensions. config CPU_MIPS32_R1 bool "MIPS32 Release 1" depends on SYS_HAS_CPU_MIPS32_R1 select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_HIGHMEM help Choose this option to build a kernel for release 1 or later of the MIPS32 architecture. Most modern embedded systems with a 32-bit MIPS processor are based on a MIPS32 processor. If you know the specific type of processor in your system, choose those that one otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. Release 2 of the MIPS32 architecture is available since several years so chances are you even have a MIPS32 Release 2 processor in which case you should choose CPU_MIPS32_R2 instead for better performance. config CPU_MIPS32_R2 bool "MIPS32 Release 2" depends on SYS_HAS_CPU_MIPS32_R2 select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_HIGHMEM help Choose this option to build a kernel for release 2 or later of the MIPS32 architecture. Most modern embedded systems with a 32-bit MIPS processor are based on a MIPS32 processor. If you know the specific type of processor in your system, choose those that one otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. config CPU_MIPS64_R1 bool "MIPS64 Release 1" depends on SYS_HAS_CPU_MIPS64_R1 select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL select CPU_SUPPORTS_HIGHMEM help Choose this option to build a kernel for release 1 or later of the MIPS64 architecture. Many modern embedded systems with a 64-bit MIPS processor are based on a MIPS64 processor. If you know the specific type of processor in your system, choose those that one otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. Release 2 of the MIPS64 architecture is available since several years so chances are you even have a MIPS64 Release 2 processor in which case you should choose CPU_MIPS64_R2 instead for better performance. config CPU_MIPS64_R2 bool "MIPS64 Release 2" depends on SYS_HAS_CPU_MIPS64_R2 select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL select CPU_SUPPORTS_HIGHMEM help Choose this option to build a kernel for release 2 or later of the MIPS64 architecture. Many modern embedded systems with a 64-bit MIPS processor are based on a MIPS64 processor. If you know the specific type of processor in your system, choose those that one otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. config CPU_R3000 bool "R3000" depends on SYS_HAS_CPU_R3000 select CPU_HAS_WB select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_HIGHMEM help Please make sure to pick the right CPU type. Linux/MIPS is not designed to be generic, i.e. Kernels compiled for R3000 CPUs will *not* work on R4000 machines and vice versa. However, since most of the supported machines have an R4000 (or similar) CPU, R4x00 might be a safe bet. If the resulting kernel does not work, try to recompile with R3000. config CPU_TX39XX bool "R39XX" depends on SYS_HAS_CPU_TX39XX select CPU_SUPPORTS_32BIT_KERNEL config CPU_VR41XX bool "R41xx" depends on SYS_HAS_CPU_VR41XX select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL help The options selects support for the NEC VR4100 series of processors. Only choose this option if you have one of these processors as a kernel built with this option will not run on any other type of processor or vice versa. config CPU_R4300 bool "R4300" depends on SYS_HAS_CPU_R4300 select CPU_HAS_LLSC select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL help MIPS Technologies R4300-series processors. config CPU_R4X00 bool "R4x00" depends on SYS_HAS_CPU_R4X00 select CPU_HAS_LLSC select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL help MIPS Technologies R4000-series processors other than 4300, including the R4000, R4400, R4600, and 4700. config CPU_TX49XX bool "R49XX" depends on SYS_HAS_CPU_TX49XX select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL config CPU_R5000 bool "R5000" depends on SYS_HAS_CPU_R5000 select CPU_HAS_LLSC select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL help MIPS Technologies R5000-series processors other than the Nevada. config CPU_R5432 bool "R5432" depends on SYS_HAS_CPU_R5432 select CPU_HAS_LLSC select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL config CPU_R6000 bool "R6000" depends on EXPERIMENTAL select CPU_HAS_LLSC depends on SYS_HAS_CPU_R6000 select CPU_SUPPORTS_32BIT_KERNEL help MIPS Technologies R6000 and R6000A series processors. Note these processors are extremely rare and the support for them is incomplete. config CPU_NEVADA bool "RM52xx" depends on SYS_HAS_CPU_NEVADA select CPU_HAS_LLSC select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL help QED / PMC-Sierra RM52xx-series ("Nevada") processors. config CPU_R8000 bool "R8000" depends on EXPERIMENTAL depends on SYS_HAS_CPU_R8000 select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_64BIT_KERNEL help MIPS Technologies R8000 processors. Note these processors are uncommon and the support for them is incomplete. config CPU_R10000 bool "R10000" depends on SYS_HAS_CPU_R10000 select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL select CPU_SUPPORTS_HIGHMEM help MIPS Technologies R10000-series processors. config CPU_RM7000 bool "RM7000" depends on SYS_HAS_CPU_RM7000 select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL select CPU_SUPPORTS_HIGHMEM config CPU_RM9000 bool "RM9000" depends on SYS_HAS_CPU_RM9000 select CPU_HAS_LLSC select CPU_HAS_PREFETCH select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL select CPU_SUPPORTS_HIGHMEM select WEAK_ORDERING config CPU_SB1 bool "SB1" depends on SYS_HAS_CPU_SB1 select CPU_HAS_LLSC select CPU_SUPPORTS_32BIT_KERNEL select CPU_SUPPORTS_64BIT_KERNEL select CPU_SUPPORTS_HIGHMEM select WEAK_ORDERING endchoice config SYS_HAS_CPU_LOONGSON2 bool config SYS_HAS_CPU_MIPS32_R1 bool config SYS_HAS_CPU_MIPS32_R2 bool config SYS_HAS_CPU_MIPS64_R1 bool config SYS_HAS_CPU_MIPS64_R2 bool config SYS_HAS_CPU_R3000 bool config SYS_HAS_CPU_TX39XX bool config SYS_HAS_CPU_VR41XX bool config SYS_HAS_CPU_R4300 bool config SYS_HAS_CPU_R4X00 bool config SYS_HAS_CPU_TX49XX bool config SYS_HAS_CPU_R5000 bool config SYS_HAS_CPU_R5432 bool config SYS_HAS_CPU_R6000 bool config SYS_HAS_CPU_NEVADA bool config SYS_HAS_CPU_R8000 bool config SYS_HAS_CPU_R10000 bool config SYS_HAS_CPU_RM7000 bool config SYS_HAS_CPU_RM9000 bool config SYS_HAS_CPU_SB1 bool # # CPU may reorder R->R, R->W, W->R, W->W # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC # config WEAK_ORDERING bool # # CPU may reorder reads and writes beyond LL/SC # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC # config WEAK_REORDERING_BEYOND_LLSC bool endmenu # # These two indicate any level of the MIPS32 and MIPS64 architecture # config CPU_MIPS32 bool default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 config CPU_MIPS64 bool default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 # # These two indicate the revision of the architecture, either Release 1 or Release 2 # config CPU_MIPSR1 bool default y if CPU_MIPS32_R1 || CPU_MIPS64_R1 config CPU_MIPSR2 bool default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 config SYS_SUPPORTS_32BIT_KERNEL bool config SYS_SUPPORTS_64BIT_KERNEL bool config CPU_SUPPORTS_32BIT_KERNEL bool config CPU_SUPPORTS_64BIT_KERNEL bool menu "Kernel type" choice prompt "Kernel code model" help You should only select this option if you have a workload that actually benefits from 64-bit processing or if your machine has large memory. You will only be presented a single option in this menu if your system does not support both 32-bit and 64-bit kernels. config 32BIT bool "32-bit kernel" depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL select TRAD_SIGNALS help Select this option if you want to build a 32-bit kernel. config 64BIT bool "64-bit kernel" depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL help Select this option if you want to build a 64-bit kernel. endchoice choice prompt "Kernel page size" default PAGE_SIZE_4KB config PAGE_SIZE_4KB bool "4kB" help This option select the standard 4kB Linux page size. On some R3000-family processors this is the only available page size. Using 4kB page size will minimize memory consumption and is therefore recommended for low memory systems. config PAGE_SIZE_8KB bool "8kB" depends on EXPERIMENTAL && CPU_R8000 help Using 8kB page size will result in higher performance kernel at the price of higher memory consumption. This option is available only on the R8000 processor. Not that at the time of this writing this option is still high experimental; there are also issues with compatibility of user applications. config PAGE_SIZE_16KB bool "16kB" depends on !CPU_R3000 && !CPU_TX39XX help Using 16kB page size will result in higher performance kernel at the price of higher memory consumption. This option is available on all non-R3000 family processors. Note that you will need a suitable Linux distribution to support this. config PAGE_SIZE_64KB bool "64kB" depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX help Using 64kB page size will result in higher performance kernel at the price of higher memory consumption. This option is available on all non-R3000 family processor. Not that at the time of this writing this option is still high experimental. endchoice config BOARD_SCACHE bool config IP22_CPU_SCACHE bool select BOARD_SCACHE # # Support for a MIPS32 / MIPS64 style S-caches # config MIPS_CPU_SCACHE bool select BOARD_SCACHE config R5000_CPU_SCACHE bool select BOARD_SCACHE config RM7000_CPU_SCACHE bool select BOARD_SCACHE config SIBYTE_DMA_PAGEOPS bool "Use DMA to clear/copy pages" depends on CPU_SB1 help Instead of using the CPU to zero and copy pages, use a Data Mover channel. These DMA channels are otherwise unused by the standard SiByte Linux port. Seems to give a small performance benefit. config CPU_HAS_PREFETCH bool choice prompt "MIPS MT options" config MIPS_MT_DISABLED bool "Disable multithreading support." help Use this option if your workload can't take advantage of MIPS hardware multithreading support. On systems that don't have the option of an MT-enabled processor this option will be the only option in this menu. config MIPS_MT_SMP bool "Use 1 TC on each available VPE for SMP" depends on SYS_SUPPORTS_MULTITHREADING select CPU_MIPSR2_IRQ_VI select CPU_MIPSR2_IRQ_EI select MIPS_MT select NR_CPUS_DEFAULT_2 select SMP select SYS_SUPPORTS_SMP help This is a kernel model which is also known a VSMP or lately has been marketesed into SMVP. config MIPS_MT_SMTC bool "SMTC: Use all TCs on all VPEs for SMP" depends on CPU_MIPS32_R2 #depends on CPU_MIPS64_R2 # once there is hardware ... depends on SYS_SUPPORTS_MULTITHREADING select GENERIC_CLOCKEVENTS_BROADCAST select CPU_MIPSR2_IRQ_VI select CPU_MIPSR2_IRQ_EI select MIPS_MT select NR_CPUS_DEFAULT_8 select SMP select SYS_SUPPORTS_SMP help This is a kernel model which is known a SMTC or lately has been marketesed into SMVP. endchoice config MIPS_MT bool config SYS_SUPPORTS_MULTITHREADING bool config MIPS_MT_FPAFF bool "Dynamic FPU affinity for FP-intensive threads" default y depends on MIPS_MT_SMP || MIPS_MT_SMTC config MIPS_VPE_LOADER bool "VPE loader support." depends on SYS_SUPPORTS_MULTITHREADING select CPU_MIPSR2_IRQ_VI select CPU_MIPSR2_IRQ_EI select MIPS_MT help Includes a loader for loading an elf relocatable object onto another VPE and running it. config MIPS_MT_SMTC_INSTANT_REPLAY bool "Low-latency Dispatch of Deferred SMTC IPIs" depends on MIPS_MT_SMTC && !PREEMPT default y help SMTC pseudo-interrupts between TCs are deferred and queued if the target TC is interrupt-inhibited (IXMT). In the first SMTC prototypes, these queued IPIs were serviced on return to user mode, or on entry into the kernel idle loop. The INSTANT_REPLAY option dispatches them as part of local_irq_restore() processing, which adds runtime overhead (hence the option to turn it off), but ensures that IPIs are handled promptly even under heavy I/O interrupt load. config MIPS_MT_SMTC_IM_BACKSTOP bool "Use per-TC register bits as backstop for inhibited IM bits" depends on MIPS_MT_SMTC default y help To support multiple TC microthreads acting as "CPUs" within a VPE, VPE-wide interrupt mask bits must be specially manipulated during interrupt handling. To support legacy drivers and interrupt controller management code, SMTC has a "backstop" to track and if necessary restore the interrupt mask. This has some performance impact on interrupt service overhead. Disable it only if you know what you are doing. config MIPS_MT_SMTC_IRQAFF bool "Support IRQ affinity API" depends on MIPS_MT_SMTC default n help Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.) for SMTC Linux kernel. Requires platform support, of which an example can be found in the MIPS kernel i8259 and Malta platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to interrupt dispatch, and should be used only if you know what you are doing. config MIPS_VPE_LOADER_TOM bool "Load VPE program into memory hidden from linux" depends on MIPS_VPE_LOADER default y help The loader can use memory that is present but has been hidden from Linux using the kernel command line option "mem=xxMB". It's up to you to ensure the amount you put in the option and the space your program requires is less or equal to the amount physically present. # this should possibly be in drivers/char, but it is rather cpu related. Hmmm config MIPS_VPE_APSP_API bool "Enable support for AP/SP API (RTLX)" depends on MIPS_VPE_LOADER help config MIPS_APSP_KSPD bool "Enable KSPD" depends on MIPS_VPE_APSP_API default y help KSPD is a kernel daemon that accepts syscall requests from the SP side, actions them and returns the results. It also handles the "exit" syscall notifying other kernel modules the SP program is exiting. You probably want to say yes here. config SB1_PASS_1_WORKAROUNDS bool depends on CPU_SB1_PASS_1 default y config SB1_PASS_2_WORKAROUNDS bool depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2) default y config SB1_PASS_2_1_WORKAROUNDS bool depends on CPU_SB1 && CPU_SB1_PASS_2 default y config 64BIT_PHYS_ADDR bool config CPU_HAS_LLSC bool config CPU_HAS_SMARTMIPS depends on SYS_SUPPORTS_SMARTMIPS bool "Support for the SmartMIPS ASE" help SmartMIPS is a extension of the MIPS32 architecture aimed at increased security at both hardware and software level for smartcards. Enabling this option will allow proper use of the SmartMIPS instructions by Linux applications. However a kernel with this option will not work on a MIPS core without SmartMIPS core. If you don't know you probably don't have SmartMIPS and should say N here. config CPU_HAS_WB bool config 64BIT_CONTEXT bool "Save 64bit integer registers" depends on 32BIT && CPU_LOONGSON2 help Loongson2 CPU is 64bit , when used in 32BIT mode, its integer registers can still be accessed as 64bit, mainly for multimedia instructions. We must have all 64bit save/restored to make sure those instructions to get correct result. # # Vectored interrupt mode is an R2 feature # config CPU_MIPSR2_IRQ_VI bool # # Extended interrupt mode is an R2 feature # config CPU_MIPSR2_IRQ_EI bool config CPU_HAS_SYNC bool depends on !CPU_R3000 default y config GENERIC_CLOCKEVENTS_BROADCAST bool # # Use the generic interrupt handling code in kernel/irq/: # config GENERIC_HARDIRQS bool default y config GENERIC_IRQ_PROBE bool default y config IRQ_PER_CPU bool # # - Highmem only makes sense for the 32-bit kernel. # - The current highmem code will only work properly on physically indexed # caches such as R3000, SB1, R7000 or those that look like they're virtually # indexed such as R4000/R4400 SC and MC versions or R10000. So for the # moment we protect the user and offer the highmem option only on machines # where it's known to be safe. This will not offer highmem on a few systems # such as MIPS32 and MIPS64 CPUs which may have virtual and physically # indexed CPUs but we're playing safe. # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we # know they might have memory configurations that could make use of highmem # support. # config HIGHMEM bool "High Memory Support" depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM config CPU_SUPPORTS_HIGHMEM bool config SYS_SUPPORTS_HIGHMEM bool config SYS_SUPPORTS_SMARTMIPS bool config ARCH_FLATMEM_ENABLE def_bool y depends on !NUMA config ARCH_DISCONTIGMEM_ENABLE bool default y if SGI_IP27 help Say Y to support 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 for more. config ARCH_SPARSEMEM_ENABLE bool select SPARSEMEM_STATIC config NUMA bool "NUMA Support" depends on SYS_SUPPORTS_NUMA help Say Y to compile the kernel to support NUMA (Non-Uniform Memory Access). This option improves performance on systems with more than two nodes; on two node systems it is generally better to leave it disabled; on single node systems disable this option disabled. config SYS_SUPPORTS_NUMA bool config NODES_SHIFT int default "6" depends on NEED_MULTIPLE_NODES source "mm/Kconfig" config SMP bool "Multi-Processing support" depends on SYS_SUPPORTS_SMP select IRQ_PER_CPU 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 and the SMP-HOWTO available at . If you don't know what to do here, say N. config SYS_SUPPORTS_SMP bool config NR_CPUS_DEFAULT_1 bool config NR_CPUS_DEFAULT_2 bool config NR_CPUS_DEFAULT_4 bool config NR_CPUS_DEFAULT_8 bool config NR_CPUS_DEFAULT_16 bool config NR_CPUS_DEFAULT_32 bool config NR_CPUS_DEFAULT_64 bool config NR_CPUS int "Maximum number of CPUs (2-64)" range 1 64 if NR_CPUS_DEFAULT_1 depends on SMP default "1" if NR_CPUS_DEFAULT_1 default "2" if NR_CPUS_DEFAULT_2 default "4" if NR_CPUS_DEFAULT_4 default "8" if NR_CPUS_DEFAULT_8 default "16" if NR_CPUS_DEFAULT_16 default "32" if NR_CPUS_DEFAULT_32 default "64" if NR_CPUS_DEFAULT_64 help This allows you to specify the maximum number of CPUs which this kernel will support. The maximum supported value is 32 for 32-bit kernel and 64 for 64-bit kernels; the minimum value which makes sense is 1 for Qemu (useful only for kernel debugging purposes) and 2 for all others. This is purely to save memory - each supported CPU adds approximately eight kilobytes to the kernel image. For best performance should round up your number of processors to the next power of two. # # Timer Interrupt Frequency Configuration # choice prompt "Timer frequency" default HZ_250 help Allows the configuration of the timer frequency. config HZ_48 bool "48 HZ" if SYS_SUPPORTS_48HZ config HZ_100 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ config HZ_128 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ config HZ_250 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ config HZ_256 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ config HZ_1000 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ config HZ_1024 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ endchoice config SYS_SUPPORTS_48HZ bool config SYS_SUPPORTS_100HZ bool config SYS_SUPPORTS_128HZ bool config SYS_SUPPORTS_250HZ bool config SYS_SUPPORTS_256HZ bool config SYS_SUPPORTS_1000HZ bool config SYS_SUPPORTS_1024HZ bool config SYS_SUPPORTS_ARBIT_HZ bool default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \ !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \ !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \ !SYS_SUPPORTS_1024HZ config HZ int default 48 if HZ_48 default 100 if HZ_100 default 128 if HZ_128 default 250 if HZ_250 default 256 if HZ_256 default 1000 if HZ_1000 default 1024 if HZ_1024 source "kernel/Kconfig.preempt" config MIPS_INSANE_LARGE bool "Support for large 64-bit configurations" depends on CPU_R10000 && 64BIT help MIPS R10000 does support a 44 bit / 16TB address space as opposed to previous 64-bit processors which only supported 40 bit / 1TB. If you need processes of more than 1TB virtual address space, say Y here. This will result in additional memory usage, so it is not recommended for normal users. 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 SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on 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. endmenu config RWSEM_GENERIC_SPINLOCK bool default y config LOCKDEP_SUPPORT bool default y config STACKTRACE_SUPPORT bool default y source "init/Kconfig" menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)" config HW_HAS_EISA bool config HW_HAS_PCI bool config PCI bool "Support for PCI controller" depends on HW_HAS_PCI select PCI_DOMAINS help Find out whether you have a PCI motherboard. PCI 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 ISA, EISA, or VESA. If you have PCI, say Y, otherwise N. The PCI-HOWTO, available from , contains valuable information about which PCI hardware does work under Linux and which doesn't. config PCI_DOMAINS bool source "drivers/pci/Kconfig" # # ISA support is now enabled via select. Too many systems still have the one # or other ISA chip on the board that users don't know about so don't expect # users to choose the right thing ... # config ISA bool config EISA bool "EISA support" depends on HW_HAS_EISA select ISA select GENERIC_ISA_DMA ---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. source "drivers/eisa/Kconfig" config TC bool "TURBOchannel support" depends on MACH_DECSTATION help TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS processors. Documentation on writing device drivers for TurboChannel is available at: . #config ACCESSBUS # bool "Access.Bus support" # depends on TC config MMU bool default y config I8253 bool config PCSPEAKER bool source "drivers/pcmcia/Kconfig" source "drivers/pci/hotplug/Kconfig" endmenu menu "Executable file formats" source "fs/Kconfig.binfmt" config TRAD_SIGNALS bool config BINFMT_IRIX bool "Include IRIX binary compatibility" depends on CPU_BIG_ENDIAN && 32BIT && BROKEN config MIPS32_COMPAT bool "Kernel support for Linux/MIPS 32-bit binary compatibility" depends on 64BIT help Select this option if you want Linux/MIPS 32-bit binary compatibility. Since all software available for Linux/MIPS is currently 32-bit you should say Y here. config COMPAT bool depends on MIPS32_COMPAT default y config SYSVIPC_COMPAT bool depends on COMPAT && SYSVIPC default y config MIPS32_O32 bool "Kernel support for o32 binaries" depends on MIPS32_COMPAT help Select this option if you want to run o32 binaries. These are pure 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of existing binaries are in this format. If unsure, say Y. config MIPS32_N32 bool "Kernel support for n32 binaries" depends on MIPS32_COMPAT help Select this option if you want to run n32 binaries. These are 64-bit binaries using 32-bit quantities for addressing and certain data that would normally be 64-bit. They are used in special cases. If unsure, say N. config BINFMT_ELF32 bool default y if MIPS32_O32 || MIPS32_N32 endmenu menu "Power management options" source "kernel/power/Kconfig" endmenu source "net/Kconfig" source "drivers/Kconfig" source "fs/Kconfig" source "kernel/Kconfig.instrumentation" source "arch/mips/Kconfig.debug" source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig"