[MIPS] R4000/R4400 errata workarounds

[~andy/linux] / arch / mips / Kconfig

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 CSRC_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 CSRC_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 SSB_DRIVER_EXTIF
        select SSB_PCICORE_HOSTMODE if PCI
        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 CSRC_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 CSRC_R4K
        select CPU_DADDI_WORKAROUNDS if 64BIT
        select CPU_R4000_WORKAROUNDS if 64BIT
        select CPU_R4400_WORKAROUNDS if 64BIT
        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 <http://www.linux-mips.org/> and the
          DECstation porting pages on <http://decstation.unix-ag.org/>.

          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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 CSRC_R4K
        select DMA_NONCOHERENT
        select HW_HAS_EISA
        select I8253
        select I8259
        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 CSRC_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
        select ZONE_DMA32 if 64BIT

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
        select ZONE_DMA32 if 64BIT

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 CSRC_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 CSRC_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 CSRC_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 CSRC_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 ARCH_SUPPORTS_OPROFILE
        bool
        default y if !MIPS_MT_SMTC

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_R4K
        bool

config CSRC_SB1250
        bool

config CFE
        bool

config DMA_COHERENT
        bool

config DMA_IP27
        bool

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"

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

#
# 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

#
# CPU non-features
#
config CPU_DADDI_WORKAROUNDS
        bool

config CPU_R4000_WORKAROUNDS
        bool
        select CPU_R4400_WORKAROUNDS

config CPU_R4400_WORKAROUNDS
        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 <file:Documentation/vm/numa> for more.

config ARCH_POPULATES_NODE_MAP
        def_bool y

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 <file:Documentation/smp.txt> and the SMP-HOWTO
          available at <http://www.tldp.org/docs.html#howto>.

          If you don't know what to do here, say N.

config 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.

source "kernel/time/Kconfig"

#
# 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/<pid>/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
          <http://www.tldp.org/docs.html#howto>, 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:
          <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.

#config ACCESSBUS
#       bool "Access.Bus support"
#       depends on TC

config MMU
        bool
        default y

config I8253
        bool

config PCSPEAKER
        bool

config ZONE_DMA32
        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"