OSCL-LXR linux-6.0.1/​arch/​mips/​Kconfig	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 # SPDX-License-Identifier: GPL-2.0
 config MIPS
         bool
         default y
         select ARCH_32BIT_OFF_T if !64BIT
         select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
         select ARCH_HAS_CURRENT_STACK_POINTER if !CC_IS_CLANG || CLANG_VERSION >= 140000
         select ARCH_HAS_DEBUG_VIRTUAL if !64BIT
         select ARCH_HAS_FORTIFY_SOURCE
         select ARCH_HAS_KCOV
         select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA
         select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
         select ARCH_HAS_STRNCPY_FROM_USER
         select ARCH_HAS_STRNLEN_USER
         select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
         select ARCH_HAS_UBSAN_SANITIZE_ALL
         select ARCH_HAS_GCOV_PROFILE_ALL
         select ARCH_KEEP_MEMBLOCK
         select ARCH_SUPPORTS_UPROBES
         select ARCH_USE_BUILTIN_BSWAP
         select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
         select ARCH_USE_MEMTEST
         select ARCH_USE_QUEUED_RWLOCKS
         select ARCH_USE_QUEUED_SPINLOCKS
         select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES
         select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
         select ARCH_WANT_IPC_PARSE_VERSION
         select ARCH_WANT_LD_ORPHAN_WARN
         select BUILDTIME_TABLE_SORT
         select CLONE_BACKWARDS
         select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
         select CPU_PM if CPU_IDLE
         select GENERIC_ATOMIC64 if !64BIT
         select GENERIC_CMOS_UPDATE
         select GENERIC_CPU_AUTOPROBE
         select GENERIC_GETTIMEOFDAY
         select GENERIC_IOMAP
         select GENERIC_IRQ_PROBE
         select GENERIC_IRQ_SHOW
         select GENERIC_ISA_DMA if EISA
         select GENERIC_LIB_ASHLDI3
         select GENERIC_LIB_ASHRDI3
         select GENERIC_LIB_CMPDI2
         select GENERIC_LIB_LSHRDI3
         select GENERIC_LIB_UCMPDI2
         select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
         select GENERIC_SMP_IDLE_THREAD
         select GENERIC_TIME_VSYSCALL
         select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
         select HAVE_ARCH_COMPILER_H
         select HAVE_ARCH_JUMP_LABEL
         select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT
         select HAVE_ARCH_MMAP_RND_BITS if MMU
         select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
         select HAVE_ARCH_SECCOMP_FILTER
         select HAVE_ARCH_TRACEHOOK
         select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
         select HAVE_ASM_MODVERSIONS
         select HAVE_CONTEXT_TRACKING_USER
         select HAVE_TIF_NOHZ
         select HAVE_C_RECORDMCOUNT
         select HAVE_DEBUG_KMEMLEAK
         select HAVE_DEBUG_STACKOVERFLOW
         select HAVE_DMA_CONTIGUOUS
         select HAVE_DYNAMIC_FTRACE
         select HAVE_EBPF_JIT if !CPU_MICROMIPS && \
                                 !CPU_DADDI_WORKAROUNDS && \
                                 !CPU_R4000_WORKAROUNDS && \
                                 !CPU_R4400_WORKAROUNDS
         select HAVE_EXIT_THREAD
         select HAVE_FAST_GUP
         select HAVE_FTRACE_MCOUNT_RECORD
         select HAVE_FUNCTION_GRAPH_TRACER
         select HAVE_FUNCTION_TRACER
         select HAVE_GCC_PLUGINS
         select HAVE_GENERIC_VDSO
         select HAVE_IOREMAP_PROT
         select HAVE_IRQ_EXIT_ON_IRQ_STACK
         select HAVE_IRQ_TIME_ACCOUNTING
         select HAVE_KPROBES
         select HAVE_KRETPROBES
         select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
         select HAVE_MOD_ARCH_SPECIFIC
         select HAVE_NMI
         select HAVE_PERF_EVENTS
         select HAVE_PERF_REGS
         select HAVE_PERF_USER_STACK_DUMP
         select HAVE_REGS_AND_STACK_ACCESS_API
         select HAVE_RSEQ
         select HAVE_SPARSE_SYSCALL_NR
         select HAVE_STACKPROTECTOR
         select HAVE_SYSCALL_TRACEPOINTS
         select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
         select IRQ_FORCED_THREADING
         select ISA if EISA
         select MODULES_USE_ELF_REL if MODULES
         select MODULES_USE_ELF_RELA if MODULES && 64BIT
         select PERF_USE_VMALLOC
         select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
         select RTC_LIB
         select SYSCTL_EXCEPTION_TRACE
         select TRACE_IRQFLAGS_SUPPORT
         select ARCH_HAS_ELFCORE_COMPAT
         select HAVE_ARCH_KCSAN if 64BIT
 
 config MIPS_FIXUP_BIGPHYS_ADDR
         bool
 
 config MIPS_GENERIC
         bool
 
 config MACH_INGENIC
         bool
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_ZBOOT
         select DMA_NONCOHERENT
         select ARCH_HAS_SYNC_DMA_FOR_CPU
         select IRQ_MIPS_CPU
         select PINCTRL
         select GPIOLIB
         select COMMON_CLK
         select GENERIC_IRQ_CHIP
         select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
         select USE_OF
         select CPU_SUPPORTS_CPUFREQ
         select MIPS_EXTERNAL_TIMER
 
 menu "Machine selection"
 
 choice
         prompt "System type"
         default MIPS_GENERIC_KERNEL
 
 config MIPS_GENERIC_KERNEL
         bool "Generic board-agnostic MIPS kernel"
         select ARCH_HAS_SETUP_DMA_OPS
         select MIPS_GENERIC
         select BOOT_RAW
         select BUILTIN_DTB
         select CEVT_R4K
         select CLKSRC_MIPS_GIC
         select COMMON_CLK
         select CPU_MIPSR2_IRQ_EI
         select CPU_MIPSR2_IRQ_VI
         select CSRC_R4K
         select DMA_NONCOHERENT
         select HAVE_PCI
         select IRQ_MIPS_CPU
         select MIPS_AUTO_PFN_OFFSET
         select MIPS_CPU_SCACHE
         select MIPS_GIC
         select MIPS_L1_CACHE_SHIFT_7
         select NO_EXCEPT_FILL
         select PCI_DRIVERS_GENERIC
         select SMP_UP if SMP
         select SWAP_IO_SPACE
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_HAS_CPU_MIPS32_R2
         select SYS_HAS_CPU_MIPS32_R6
         select SYS_HAS_CPU_MIPS64_R1
         select SYS_HAS_CPU_MIPS64_R2
         select SYS_HAS_CPU_MIPS64_R6
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_HIGHMEM
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_MICROMIPS
         select SYS_SUPPORTS_MIPS16
         select SYS_SUPPORTS_MIPS_CPS
         select SYS_SUPPORTS_MULTITHREADING
         select SYS_SUPPORTS_RELOCATABLE
         select SYS_SUPPORTS_SMARTMIPS
         select SYS_SUPPORTS_ZBOOT
         select UHI_BOOT
         select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
         select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
         select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
         select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
         select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
         select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
         select USE_OF
         help
           Select this to build a kernel which aims to support multiple boards,
           generally using a flattened device tree passed from the bootloader
           using the boot protocol defined in the UHI (Unified Hosting
           Interface) specification.
 
 config MIPS_ALCHEMY
         bool "Alchemy processor based machines"
         select PHYS_ADDR_T_64BIT
         select CEVT_R4K
         select CSRC_R4K
         select IRQ_MIPS_CPU
         select DMA_NONCOHERENT          # Au1000,1500,1100 aren't, rest is
         select MIPS_FIXUP_BIGPHYS_ADDR if PCI
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_APM_EMULATION
         select GPIOLIB
         select SYS_SUPPORTS_ZBOOT
         select COMMON_CLK
 
 config AR7
         bool "Texas Instruments AR7"
         select BOOT_ELF32
         select COMMON_CLK
         select DMA_NONCOHERENT
         select CEVT_R4K
         select CSRC_R4K
         select IRQ_MIPS_CPU
         select NO_EXCEPT_FILL
         select SWAP_IO_SPACE
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_HAS_EARLY_PRINTK
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_MIPS16
         select SYS_SUPPORTS_ZBOOT_UART16550
         select GPIOLIB
         select VLYNQ
         help
           Support for the Texas Instruments AR7 System-on-a-Chip
           family: TNETD7100, 7200 and 7300.
 
 config ATH25
         bool "Atheros AR231x/AR531x SoC support"
         select CEVT_R4K
         select CSRC_R4K
         select DMA_NONCOHERENT
         select IRQ_MIPS_CPU
         select IRQ_DOMAIN
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_HAS_EARLY_PRINTK
         help
           Support for Atheros AR231x and Atheros AR531x based boards
 
 config ATH79
         bool "Atheros AR71XX/AR724X/AR913X based boards"
         select ARCH_HAS_RESET_CONTROLLER
         select BOOT_RAW
         select CEVT_R4K
         select CSRC_R4K
         select DMA_NONCOHERENT
         select GPIOLIB
         select PINCTRL
         select COMMON_CLK
         select IRQ_MIPS_CPU
         select SYS_HAS_CPU_MIPS32_R2
         select SYS_HAS_EARLY_PRINTK
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_MIPS16
         select SYS_SUPPORTS_ZBOOT_UART_PROM
         select USE_OF
         select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
         help
           Support for the Atheros AR71XX/AR724X/AR913X SoCs.
 
 config BMIPS_GENERIC
         bool "Broadcom Generic BMIPS kernel"
         select ARCH_HAS_RESET_CONTROLLER
         select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
         select BOOT_RAW
         select NO_EXCEPT_FILL
         select USE_OF
         select CEVT_R4K
         select CSRC_R4K
         select SYNC_R4K
         select COMMON_CLK
         select BCM6345_L1_IRQ
         select BCM7038_L1_IRQ
         select BCM7120_L2_IRQ
         select BRCMSTB_L2_IRQ
         select IRQ_MIPS_CPU
         select DMA_NONCOHERENT
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_HIGHMEM
         select SYS_HAS_CPU_BMIPS32_3300
         select SYS_HAS_CPU_BMIPS4350
         select SYS_HAS_CPU_BMIPS4380
         select SYS_HAS_CPU_BMIPS5000
         select SWAP_IO_SPACE
         select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
         select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
         select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
         select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
         select HARDIRQS_SW_RESEND
         select HAVE_PCI
         select PCI_DRIVERS_GENERIC
         select FW_CFE
         help
           Build a generic DT-based kernel image that boots on select
           BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
           box chips.  Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
           must be set appropriately for your board.
 
 config BCM47XX
         bool "Broadcom BCM47XX based boards"
         select BOOT_RAW
         select CEVT_R4K
         select CSRC_R4K
         select DMA_NONCOHERENT
         select HAVE_PCI
         select IRQ_MIPS_CPU
         select SYS_HAS_CPU_MIPS32_R1
         select NO_EXCEPT_FILL
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_MIPS16
         select SYS_SUPPORTS_ZBOOT
         select SYS_HAS_EARLY_PRINTK
         select USE_GENERIC_EARLY_PRINTK_8250
         select GPIOLIB
         select LEDS_GPIO_REGISTER
         select BCM47XX_NVRAM
         select BCM47XX_SPROM
         select BCM47XX_SSB if !BCM47XX_BCMA
         help
           Support for BCM47XX based boards
 
 config BCM63XX
         bool "Broadcom BCM63XX based boards"
         select BOOT_RAW
         select CEVT_R4K
         select CSRC_R4K
         select SYNC_R4K
         select DMA_NONCOHERENT
         select IRQ_MIPS_CPU
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_HAS_EARLY_PRINTK
         select SYS_HAS_CPU_BMIPS32_3300
         select SYS_HAS_CPU_BMIPS4350
         select SYS_HAS_CPU_BMIPS4380
         select SWAP_IO_SPACE
         select GPIOLIB
         select MIPS_L1_CACHE_SHIFT_4
         select HAVE_LEGACY_CLK
         help
           Support for BCM63XX based boards
 
 config MIPS_COBALT
         bool "Cobalt Server"
         select CEVT_R4K
         select CSRC_R4K
         select CEVT_GT641XX
         select DMA_NONCOHERENT
         select FORCE_PCI
         select I8253
         select I8259
         select IRQ_MIPS_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
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select USE_GENERIC_EARLY_PRINTK_8250
 
 config MACH_DECSTATION
         bool "DECstations"
         select BOOT_ELF32
         select CEVT_DS1287
         select CEVT_R4K if CPU_R4X00
         select CSRC_IOASIC
         select CSRC_R4K if CPU_R4X00
         select CPU_DADDI_WORKAROUNDS if 64BIT
         select CPU_R4000_WORKAROUNDS if 64BIT
         select CPU_R4400_WORKAROUNDS if 64BIT
         select DMA_NONCOHERENT
         select NO_IOPORT_MAP
         select IRQ_MIPS_CPU
         select SYS_HAS_CPU_R3000
         select SYS_HAS_CPU_R4X00
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_128HZ
         select SYS_SUPPORTS_256HZ
         select SYS_SUPPORTS_1024HZ
         select MIPS_L1_CACHE_SHIFT_4
         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_MEMORY
         select ARC_PROMLIB
         select ARCH_MIGHT_HAVE_PC_PARPORT
         select ARCH_MIGHT_HAVE_PC_SERIO
         select DMA_OPS
         select FW_ARC
         select FW_ARC32
         select ARCH_MAY_HAVE_PC_FDC
         select CEVT_R4K
         select CSRC_R4K
         select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
         select GENERIC_ISA_DMA
         select HAVE_PCSPKR_PLATFORM
         select IRQ_MIPS_CPU
         select I8253
         select I8259
         select ISA
         select SYS_HAS_CPU_R4X00
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_100HZ
         select SYS_SUPPORTS_LITTLE_ENDIAN
         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 Millennium and
           Olivetti M700-10 workstations.
 
 config MACH_INGENIC_SOC
         bool "Ingenic SoC based machines"
         select MIPS_GENERIC
         select MACH_INGENIC
         select SYS_SUPPORTS_ZBOOT_UART16550
         select CPU_SUPPORTS_CPUFREQ
         select MIPS_EXTERNAL_TIMER
 
 config LANTIQ
         bool "Lantiq based platforms"
         select DMA_NONCOHERENT
         select IRQ_MIPS_CPU
         select CEVT_R4K
         select CSRC_R4K
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_HAS_CPU_MIPS32_R2
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_MIPS16
         select SYS_SUPPORTS_MULTITHREADING
         select SYS_SUPPORTS_VPE_LOADER
         select SYS_HAS_EARLY_PRINTK
         select GPIOLIB
         select SWAP_IO_SPACE
         select BOOT_RAW
         select HAVE_LEGACY_CLK
         select USE_OF
         select PINCTRL
         select PINCTRL_LANTIQ
         select ARCH_HAS_RESET_CONTROLLER
         select RESET_CONTROLLER
 
 config MACH_LOONGSON32
         bool "Loongson 32-bit family of machines"
         select SYS_SUPPORTS_ZBOOT
         help
           This enables support for the Loongson-1 family of machines.
 
           Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
           the Institute of Computing Technology (ICT), Chinese Academy of
           Sciences (CAS).
 
 config MACH_LOONGSON2EF
         bool "Loongson-2E/F family of machines"
         select SYS_SUPPORTS_ZBOOT
         help
           This enables the support of early Loongson-2E/F family of machines.
 
 config MACH_LOONGSON64
         bool "Loongson 64-bit family of machines"
         select ARCH_SPARSEMEM_ENABLE
         select ARCH_MIGHT_HAVE_PC_PARPORT
         select ARCH_MIGHT_HAVE_PC_SERIO
         select GENERIC_ISA_DMA_SUPPORT_BROKEN
         select BOOT_ELF32
         select BOARD_SCACHE
         select CSRC_R4K
         select CEVT_R4K
         select CPU_HAS_WB
         select FORCE_PCI
         select ISA
         select I8259
         select IRQ_MIPS_CPU
         select NO_EXCEPT_FILL
         select NR_CPUS_DEFAULT_64
         select USE_GENERIC_EARLY_PRINTK_8250
         select PCI_DRIVERS_GENERIC
         select SYS_HAS_CPU_LOONGSON64
         select SYS_HAS_EARLY_PRINTK
         select SYS_SUPPORTS_SMP
         select SYS_SUPPORTS_HOTPLUG_CPU
         select SYS_SUPPORTS_NUMA
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_HIGHMEM
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_ZBOOT
         select SYS_SUPPORTS_RELOCATABLE
         select ZONE_DMA32
         select COMMON_CLK
         select USE_OF
         select BUILTIN_DTB
         select PCI_HOST_GENERIC
         select HAVE_ARCH_NODEDATA_EXTENSION if NUMA
         help
           This enables the support of Loongson-2/3 family of machines.
 
           Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
           GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
           and Loongson-2F which will be removed), developed by the Institute
           of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
 
 config MIPS_MALTA
         bool "MIPS Malta board"
         select ARCH_MAY_HAVE_PC_FDC
         select ARCH_MIGHT_HAVE_PC_PARPORT
         select ARCH_MIGHT_HAVE_PC_SERIO
         select BOOT_ELF32
         select BOOT_RAW
         select BUILTIN_DTB
         select CEVT_R4K
         select CLKSRC_MIPS_GIC
         select COMMON_CLK
         select CSRC_R4K
         select DMA_NONCOHERENT
         select GENERIC_ISA_DMA
         select HAVE_PCSPKR_PLATFORM
         select HAVE_PCI
         select I8253
         select I8259
         select IRQ_MIPS_CPU
         select MIPS_BONITO64
         select MIPS_CPU_SCACHE
         select MIPS_GIC
         select MIPS_L1_CACHE_SHIFT_6
         select MIPS_MSC
         select PCI_GT64XXX_PCI0
         select SMP_UP if SMP
         select SWAP_IO_SPACE
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_HAS_CPU_MIPS32_R2
         select SYS_HAS_CPU_MIPS32_R3_5
         select SYS_HAS_CPU_MIPS32_R5
         select SYS_HAS_CPU_MIPS32_R6
         select SYS_HAS_CPU_MIPS64_R1
         select SYS_HAS_CPU_MIPS64_R2
         select SYS_HAS_CPU_MIPS64_R6
         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_HIGHMEM
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_MICROMIPS
         select SYS_SUPPORTS_MIPS16
         select SYS_SUPPORTS_MIPS_CMP
         select SYS_SUPPORTS_MIPS_CPS
         select SYS_SUPPORTS_MULTITHREADING
         select SYS_SUPPORTS_RELOCATABLE
         select SYS_SUPPORTS_SMARTMIPS
         select SYS_SUPPORTS_VPE_LOADER
         select SYS_SUPPORTS_ZBOOT
         select USE_OF
         select WAR_ICACHE_REFILLS
         select ZONE_DMA32 if 64BIT
         help
           This enables support for the MIPS Technologies Malta evaluation
           board.
 
 config MACH_PIC32
         bool "Microchip PIC32 Family"
         help
           This enables support for the Microchip PIC32 family of platforms.
 
           Microchip PIC32 is a family of general-purpose 32 bit MIPS core
           microcontrollers.
 
 config MACH_NINTENDO64
         bool "Nintendo 64 console"
         select CEVT_R4K
         select CSRC_R4K
         select SYS_HAS_CPU_R4300
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_ZBOOT
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_64BIT_KERNEL
         select DMA_NONCOHERENT
         select IRQ_MIPS_CPU
 
 config RALINK
         bool "Ralink based machines"
         select CEVT_R4K
         select COMMON_CLK
         select CSRC_R4K
         select BOOT_RAW
         select DMA_NONCOHERENT
         select IRQ_MIPS_CPU
         select USE_OF
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_HAS_CPU_MIPS32_R2
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_MIPS16
         select SYS_SUPPORTS_ZBOOT
         select SYS_HAS_EARLY_PRINTK
         select ARCH_HAS_RESET_CONTROLLER
         select RESET_CONTROLLER
 
 config MACH_REALTEK_RTL
         bool "Realtek RTL838x/RTL839x based machines"
         select MIPS_GENERIC
         select DMA_NONCOHERENT
         select IRQ_MIPS_CPU
         select CSRC_R4K
         select CEVT_R4K
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_HAS_CPU_MIPS32_R2
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_MIPS16
         select SYS_SUPPORTS_MULTITHREADING
         select SYS_SUPPORTS_VPE_LOADER
         select BOOT_RAW
         select PINCTRL
         select USE_OF
 
 config SGI_IP22
         bool "SGI IP22 (Indy/Indigo2)"
         select ARC_MEMORY
         select ARC_PROMLIB
         select FW_ARC
         select FW_ARC32
         select ARCH_MIGHT_HAVE_PC_SERIO
         select BOOT_ELF32
         select CEVT_R4K
         select CSRC_R4K
         select DEFAULT_SGI_PARTITION
         select DMA_NONCOHERENT
         select HAVE_EISA
         select I8253
         select I8259
         select IP22_CPU_SCACHE
         select IRQ_MIPS_CPU
         select GENERIC_ISA_DMA_SUPPORT_BROKEN
         select SGI_HAS_I8042
         select SGI_HAS_INDYDOG
         select SGI_HAS_HAL2
         select SGI_HAS_SEEQ
         select SGI_HAS_WD93
         select SGI_HAS_ZILOG
         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
         select WAR_R4600_V1_INDEX_ICACHEOP
         select WAR_R4600_V1_HIT_CACHEOP
         select WAR_R4600_V2_HIT_CACHEOP
         select MIPS_L1_CACHE_SHIFT_7
         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 ARCH_HAS_PHYS_TO_DMA
         select ARCH_SPARSEMEM_ENABLE
         select FW_ARC
         select FW_ARC64
         select ARC_CMDLINE_ONLY
         select BOOT_ELF64
         select DEFAULT_SGI_PARTITION
         select FORCE_PCI
         select SYS_HAS_EARLY_PRINTK
         select HAVE_PCI
         select IRQ_MIPS_CPU
         select IRQ_DOMAIN_HIERARCHY
         select NR_CPUS_DEFAULT_64
         select PCI_DRIVERS_GENERIC
         select PCI_XTALK_BRIDGE
         select SYS_HAS_CPU_R10000
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_NUMA
         select SYS_SUPPORTS_SMP
         select WAR_R10000_LLSC
         select MIPS_L1_CACHE_SHIFT_7
         select NUMA
         select HAVE_ARCH_NODEDATA_EXTENSION
         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_IP28
         bool "SGI IP28 (Indigo2 R10k)"
         select ARC_MEMORY
         select ARC_PROMLIB
         select FW_ARC
         select FW_ARC64
         select ARCH_MIGHT_HAVE_PC_SERIO
         select BOOT_ELF64
         select CEVT_R4K
         select CSRC_R4K
         select DEFAULT_SGI_PARTITION
         select DMA_NONCOHERENT
         select GENERIC_ISA_DMA_SUPPORT_BROKEN
         select IRQ_MIPS_CPU
         select HAVE_EISA
         select I8253
         select I8259
         select SGI_HAS_I8042
         select SGI_HAS_INDYDOG
         select SGI_HAS_HAL2
         select SGI_HAS_SEEQ
         select SGI_HAS_WD93
         select SGI_HAS_ZILOG
         select SWAP_IO_SPACE
         select SYS_HAS_CPU_R10000
         select SYS_HAS_EARLY_PRINTK
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select WAR_R10000_LLSC
         select MIPS_L1_CACHE_SHIFT_7
         help
           This is the SGI Indigo2 with R10000 processor.  To compile a Linux
           kernel that runs on these, say Y here.
 
 config SGI_IP30
         bool "SGI IP30 (Octane/Octane2)"
         select ARCH_HAS_PHYS_TO_DMA
         select FW_ARC
         select FW_ARC64
         select BOOT_ELF64
         select CEVT_R4K
         select CSRC_R4K
         select FORCE_PCI
         select SYNC_R4K if SMP
         select ZONE_DMA32
         select HAVE_PCI
         select IRQ_MIPS_CPU
         select IRQ_DOMAIN_HIERARCHY
         select PCI_DRIVERS_GENERIC
         select PCI_XTALK_BRIDGE
         select SYS_HAS_EARLY_PRINTK
         select SYS_HAS_CPU_R10000
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_SMP
         select WAR_R10000_LLSC
         select MIPS_L1_CACHE_SHIFT_7
         select ARC_MEMORY
         help
           These are the SGI Octane and Octane2 graphics workstations.  To
           compile a Linux kernel that runs on these, say Y here.
 
 config SGI_IP32
         bool "SGI IP32 (O2)"
         select ARC_MEMORY
         select ARC_PROMLIB
         select ARCH_HAS_PHYS_TO_DMA
         select FW_ARC
         select FW_ARC32
         select BOOT_ELF32
         select CEVT_R4K
         select CSRC_R4K
         select DMA_NONCOHERENT
         select HAVE_PCI
         select IRQ_MIPS_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
         select WAR_ICACHE_REFILLS
         help
           If you want this kernel to run on SGI O2 workstation, say Y here.
 
 config SIBYTE_CRHINE
         bool "Sibyte BCM91120C-CRhine"
         select BOOT_ELF32
         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"
         select BOOT_ELF32
         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"
         select BOOT_ELF32
         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"
         select BOOT_ELF32
         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 HAVE_PATA_PLATFORM
         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
         select ZONE_DMA32 if 64BIT
         select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
 
 config SIBYTE_LITTLESUR
         bool "Sibyte BCM91250C2-LittleSur"
         select BOOT_ELF32
         select HAVE_PATA_PLATFORM
         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
         select ZONE_DMA32 if 64BIT
 
 config SIBYTE_SENTOSA
         bool "Sibyte BCM91250E-Sentosa"
         select BOOT_ELF32
         select SIBYTE_SB1250
         select SWAP_IO_SPACE
         select SYS_HAS_CPU_SB1
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
 
 config SIBYTE_BIGSUR
         bool "Sibyte BCM91480B-BigSur"
         select BOOT_ELF32
         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
         select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
 
 config SNI_RM
         bool "SNI RM200/300/400"
         select ARC_MEMORY
         select ARC_PROMLIB
         select FW_ARC if CPU_LITTLE_ENDIAN
         select FW_ARC32 if CPU_LITTLE_ENDIAN
         select FW_SNIPROM if CPU_BIG_ENDIAN
         select ARCH_MAY_HAVE_PC_FDC
         select ARCH_MIGHT_HAVE_PC_PARPORT
         select ARCH_MIGHT_HAVE_PC_SERIO
         select BOOT_ELF32
         select CEVT_R4K
         select CSRC_R4K
         select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
         select DMA_NONCOHERENT
         select GENERIC_ISA_DMA
         select HAVE_EISA
         select HAVE_PCSPKR_PLATFORM
         select HAVE_PCI
         select IRQ_MIPS_CPU
         select I8253
         select I8259
         select ISA
         select MIPS_L1_CACHE_SHIFT_6
         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
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_HIGHMEM
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select WAR_R4600_V2_HIT_CACHEOP
         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 MACH_TX49XX
         bool "Toshiba TX49 series based machines"
         select WAR_TX49XX_ICACHE_INDEX_INV
 
 config MIKROTIK_RB532
         bool "Mikrotik RB532 boards"
         select CEVT_R4K
         select CSRC_R4K
         select DMA_NONCOHERENT
         select HAVE_PCI
         select IRQ_MIPS_CPU
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_SUPPORTS_32BIT_KERNEL
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SWAP_IO_SPACE
         select BOOT_RAW
         select GPIOLIB
         select MIPS_L1_CACHE_SHIFT_4
         help
           Support the Mikrotik(tm) RouterBoard 532 series,
           based on the IDT RC32434 SoC.
 
 config CAVIUM_OCTEON_SOC
         bool "Cavium Networks Octeon SoC based boards"
         select CEVT_R4K
         select ARCH_HAS_PHYS_TO_DMA
         select HAVE_RAPIDIO
         select PHYS_ADDR_T_64BIT
         select SYS_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_BIG_ENDIAN
         select EDAC_SUPPORT
         select EDAC_ATOMIC_SCRUB
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
         select SYS_HAS_EARLY_PRINTK
         select SYS_HAS_CPU_CAVIUM_OCTEON
         select HAVE_PCI
         select HAVE_PLAT_DELAY
         select HAVE_PLAT_FW_INIT_CMDLINE
         select HAVE_PLAT_MEMCPY
         select ZONE_DMA32
         select GPIOLIB
         select USE_OF
         select ARCH_SPARSEMEM_ENABLE
         select SYS_SUPPORTS_SMP
         select NR_CPUS_DEFAULT_64
         select MIPS_NR_CPU_NR_MAP_1024
         select BUILTIN_DTB
         select MTD
         select MTD_COMPLEX_MAPPINGS
         select SWIOTLB
         select SYS_SUPPORTS_RELOCATABLE
         help
           This option supports all of the Octeon reference boards from Cavium
           Networks. It builds a kernel that dynamically determines the Octeon
           CPU type and supports all known board reference implementations.
           Some of the supported boards are:
                 EBT3000
                 EBH3000
                 EBH3100
                 Thunder
                 Kodama
                 Hikari
           Say Y here for most Octeon reference boards.
 
 endchoice
 
 source "arch/mips/alchemy/Kconfig"
 source "arch/mips/ath25/Kconfig"
 source "arch/mips/ath79/Kconfig"
 source "arch/mips/bcm47xx/Kconfig"
 source "arch/mips/bcm63xx/Kconfig"
 source "arch/mips/bmips/Kconfig"
 source "arch/mips/generic/Kconfig"
 source "arch/mips/ingenic/Kconfig"
 source "arch/mips/jazz/Kconfig"
 source "arch/mips/lantiq/Kconfig"
 source "arch/mips/pic32/Kconfig"
 source "arch/mips/ralink/Kconfig"
 source "arch/mips/sgi-ip27/Kconfig"
 source "arch/mips/sibyte/Kconfig"
 source "arch/mips/txx9/Kconfig"
 source "arch/mips/cavium-octeon/Kconfig"
 source "arch/mips/loongson2ef/Kconfig"
 source "arch/mips/loongson32/Kconfig"
 source "arch/mips/loongson64/Kconfig"
 
 endmenu
 
 config GENERIC_HWEIGHT
         bool
         default y
 
 config GENERIC_CALIBRATE_DELAY
         bool
         default y
 
 config SCHED_OMIT_FRAME_POINTER
         bool
         default y
 
 #
 # Select some configuration options automatically based on user selections.
 #
 config FW_ARC
         bool
 
 config ARCH_MAY_HAVE_PC_FDC
         bool
 
 config BOOT_RAW
         bool
 
 config CEVT_BCM1480
         bool
 
 config CEVT_DS1287
         bool
 
 config CEVT_GT641XX
         bool
 
 config CEVT_R4K
         bool
 
 config CEVT_SB1250
         bool
 
 config CEVT_TXX9
         bool
 
 config CSRC_BCM1480
         bool
 
 config CSRC_IOASIC
         bool
 
 config CSRC_R4K
         select CLOCKSOURCE_WATCHDOG if CPU_FREQ
         bool
 
 config CSRC_SB1250
         bool
 
 config MIPS_CLOCK_VSYSCALL
         def_bool CSRC_R4K || CLKSRC_MIPS_GIC
 
 config GPIO_TXX9
         select GPIOLIB
         bool
 
 config FW_CFE
         bool
 
 config ARCH_SUPPORTS_UPROBES
         bool
 
 config DMA_PERDEV_COHERENT
         bool
         select ARCH_HAS_SETUP_DMA_OPS
         select DMA_NONCOHERENT
 
 config DMA_NONCOHERENT
         bool
         #
         # MIPS allows mixing "slightly different" Cacheability and Coherency
         # Attribute bits.  It is believed that the uncached access through
         # KSEG1 and the implementation specific "uncached accelerated" used
         # by pgprot_writcombine can be mixed, and the latter sometimes provides
         # significant advantages.
         #
         select ARCH_HAS_DMA_WRITE_COMBINE
         select ARCH_HAS_DMA_PREP_COHERENT
         select ARCH_HAS_SYNC_DMA_FOR_DEVICE
         select ARCH_HAS_DMA_SET_UNCACHED
         select DMA_NONCOHERENT_MMAP
         select NEED_DMA_MAP_STATE
 
 config SYS_HAS_EARLY_PRINTK
         bool
 
 config SYS_SUPPORTS_HOTPLUG_CPU
         bool
 
 config MIPS_BONITO64
         bool
 
 config MIPS_MSC
         bool
 
 config SYNC_R4K
         bool
 
 config NO_IOPORT_MAP
         def_bool n
 
 config GENERIC_CSUM
         def_bool CPU_NO_LOAD_STORE_LR
 
 config GENERIC_ISA_DMA
         bool
         select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
         select ISA_DMA_API
 
 config GENERIC_ISA_DMA_SUPPORT_BROKEN
         bool
         select GENERIC_ISA_DMA
 
 config HAVE_PLAT_DELAY
         bool
 
 config HAVE_PLAT_FW_INIT_CMDLINE
         bool
 
 config HAVE_PLAT_MEMCPY
         bool
 
 config ISA_DMA_API
         bool
 
 config SYS_SUPPORTS_RELOCATABLE
         bool
         help
           Selected if the platform supports relocating the kernel.
           The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
           to allow access to command line and entropy sources.
 
 #
 # Endianness 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 "Endianness 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
 
 endchoice
 
 config EXPORT_UASM
         bool
 
 config SYS_SUPPORTS_APM_EMULATION
         bool
 
 config SYS_SUPPORTS_BIG_ENDIAN
         bool
 
 config SYS_SUPPORTS_LITTLE_ENDIAN
         bool
 
 config MIPS_HUGE_TLB_SUPPORT
         def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
 
 config IRQ_MSP_SLP
         bool
 
 config IRQ_MSP_CIC
         bool
 
 config IRQ_TXX9
         bool
 
 config IRQ_GT641XX
         bool
 
 config PCI_GT64XXX_PCI0
         bool
 
 config PCI_XTALK_BRIDGE
         bool
 
 config NO_EXCEPT_FILL
         bool
 
 config MIPS_SPRAM
         bool
 
 config SWAP_IO_SPACE
         bool
 
 config SGI_HAS_INDYDOG
         bool
 
 config SGI_HAS_HAL2
         bool
 
 config SGI_HAS_SEEQ
         bool
 
 config SGI_HAS_WD93
         bool
 
 config SGI_HAS_ZILOG
         bool
 
 config SGI_HAS_I8042
         bool
 
 config DEFAULT_SGI_PARTITION
         bool
 
 config FW_ARC32
         bool
 
 config FW_SNIPROM
         bool
 
 config BOOT_ELF32
         bool
 
 config MIPS_L1_CACHE_SHIFT_4
         bool
 
 config MIPS_L1_CACHE_SHIFT_5
         bool
 
 config MIPS_L1_CACHE_SHIFT_6
         bool
 
 config MIPS_L1_CACHE_SHIFT_7
         bool
 
 config MIPS_L1_CACHE_SHIFT
         int
         default "7" if MIPS_L1_CACHE_SHIFT_7
         default "6" if MIPS_L1_CACHE_SHIFT_6
         default "5" if MIPS_L1_CACHE_SHIFT_5
         default "4" if MIPS_L1_CACHE_SHIFT_4
         default "5"
 
 config ARC_CMDLINE_ONLY
         bool
 
 config ARC_CONSOLE
         bool "ARC console support"
         depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
 
 config ARC_MEMORY
         bool
 
 config ARC_PROMLIB
         bool
 
 config FW_ARC64
         bool
 
 config BOOT_ELF64
         bool
 
 menu "CPU selection"
 
 choice
         prompt "CPU type"
         default CPU_R4X00
 
 config CPU_LOONGSON64
         bool "Loongson 64-bit CPU"
         depends on SYS_HAS_CPU_LOONGSON64
         select ARCH_HAS_PHYS_TO_DMA
         select CPU_MIPSR2
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         select CPU_SUPPORTS_MSA
         select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
         select CPU_MIPSR2_IRQ_VI
         select WEAK_ORDERING
         select WEAK_REORDERING_BEYOND_LLSC
         select MIPS_ASID_BITS_VARIABLE
         select MIPS_PGD_C0_CONTEXT
         select MIPS_L1_CACHE_SHIFT_6
         select MIPS_FP_SUPPORT
         select GPIOLIB
         select SWIOTLB
         select HAVE_KVM
         help
           The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
           cores implements the MIPS64R2 instruction set with many extensions,
           including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
           3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
           Loongson-2E/2F is not covered here and will be removed in future.
 
 config LOONGSON3_ENHANCEMENT
         bool "New Loongson-3 CPU Enhancements"
         default n
         depends on CPU_LOONGSON64
         help
           New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
           R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
           FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
           Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
           Fast TLB refill support, etc.
 
           This option enable those enhancements which are not probed at run
           time. If you want a generic kernel to run on all Loongson 3 machines,
           please say 'N' here. If you want a high-performance kernel to run on
           new Loongson-3 machines only, please say 'Y' here.
 
 config CPU_LOONGSON3_WORKAROUNDS
         bool "Loongson-3 LLSC Workarounds"
         default y if SMP
         depends on CPU_LOONGSON64
         help
           Loongson-3 processors have the llsc issues which require workarounds.
           Without workarounds the system may hang unexpectedly.
 
           Say Y, unless you know what you are doing.
 
 config CPU_LOONGSON3_CPUCFG_EMULATION
         bool "Emulate the CPUCFG instruction on older Loongson cores"
         default y
         depends on CPU_LOONGSON64
         help
           Loongson-3A R4 and newer have the CPUCFG instruction available for
           userland to query CPU capabilities, much like CPUID on x86. This
           option provides emulation of the instruction on older Loongson
           cores, back to Loongson-3A1000.
 
           If unsure, please say Y.
 
 config CPU_LOONGSON2E
         bool "Loongson 2E"
         depends on SYS_HAS_CPU_LOONGSON2E
         select CPU_LOONGSON2EF
         help
           The Loongson 2E processor implements the MIPS III instruction set
           with many extensions.
 
           It has an internal FPGA northbridge, which is compatible to
           bonito64.
 
 config CPU_LOONGSON2F
         bool "Loongson 2F"
         depends on SYS_HAS_CPU_LOONGSON2F
         select CPU_LOONGSON2EF
         select GPIOLIB
         help
           The Loongson 2F processor implements the MIPS III instruction set
           with many extensions.
 
           Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
           have a similar programming interface with FPGA northbridge used in
           Loongson2E.
 
 config CPU_LOONGSON1B
         bool "Loongson 1B"
         depends on SYS_HAS_CPU_LOONGSON1B
         select CPU_LOONGSON32
         select LEDS_GPIO_REGISTER
         help
           The Loongson 1B is a 32-bit SoC, which implements the MIPS32
           Release 1 instruction set and part of the MIPS32 Release 2
           instruction set.
 
 config CPU_LOONGSON1C
         bool "Loongson 1C"
         depends on SYS_HAS_CPU_LOONGSON1C
         select CPU_LOONGSON32
         select LEDS_GPIO_REGISTER
         help
           The Loongson 1C is a 32-bit SoC, which implements the MIPS32
           Release 1 instruction set and part of the MIPS32 Release 2
           instruction set.
 
 config CPU_MIPS32_R1
         bool "MIPS32 Release 1"
         depends on SYS_HAS_CPU_MIPS32_R1
         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_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_MSA
         select HAVE_KVM
         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_MIPS32_R5
         bool "MIPS32 Release 5"
         depends on SYS_HAS_CPU_MIPS32_R5
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_MSA
         select HAVE_KVM
         select MIPS_O32_FP64_SUPPORT
         help
           Choose this option to build a kernel for release 5 or later of the
           MIPS32 architecture.  New MIPS processors, starting with the Warrior
           family, are based on a MIPS32r5 processor. If you own an older
           processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
 
 config CPU_MIPS32_R6
         bool "MIPS32 Release 6"
         depends on SYS_HAS_CPU_MIPS32_R6
         select CPU_HAS_PREFETCH
         select CPU_NO_LOAD_STORE_LR
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_MSA
         select HAVE_KVM
         select MIPS_O32_FP64_SUPPORT
         help
           Choose this option to build a kernel for release 6 or later of the
           MIPS32 architecture.  New MIPS processors, starting with the Warrior
           family, are based on a MIPS32r6 processor. If you own an older
           processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
 
 config CPU_MIPS64_R1
         bool "MIPS64 Release 1"
         depends on SYS_HAS_CPU_MIPS64_R1
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         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_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         select CPU_SUPPORTS_MSA
         select HAVE_KVM
         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_MIPS64_R5
         bool "MIPS64 Release 5"
         depends on SYS_HAS_CPU_MIPS64_R5
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         select CPU_SUPPORTS_MSA
         select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
         select HAVE_KVM
         help
           Choose this option to build a kernel for release 5 or later of the
           MIPS64 architecture.  This is a intermediate MIPS architecture
           release partly implementing release 6 features. Though there is no
           any hardware known to be based on this release.
 
 config CPU_MIPS64_R6
         bool "MIPS64 Release 6"
         depends on SYS_HAS_CPU_MIPS64_R6
         select CPU_HAS_PREFETCH
         select CPU_NO_LOAD_STORE_LR
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         select CPU_SUPPORTS_MSA
         select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
         select HAVE_KVM
         help
           Choose this option to build a kernel for release 6 or later of the
           MIPS64 architecture.  New MIPS processors, starting with the Warrior
           family, are based on a MIPS64r6 processor. If you own an older
           processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
 
 config CPU_P5600
         bool "MIPS Warrior P5600"
         depends on SYS_HAS_CPU_P5600
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_MSA
         select CPU_SUPPORTS_CPUFREQ
         select CPU_MIPSR2_IRQ_VI
         select CPU_MIPSR2_IRQ_EI
         select HAVE_KVM
         select MIPS_O32_FP64_SUPPORT
         help
           Choose this option to build a kernel for MIPS Warrior P5600 CPU.
           It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
           MMU with two-levels TLB, UCA, MSA, MDU core level features and system
           level features like up to six P5600 calculation cores, CM2 with L2
           cache, IOCU/IOMMU (though might be unused depending on the system-
           specific IP core configuration), GIC, CPC, virtualisation module,
           eJTAG and PDtrace.
 
 config CPU_R3000
         bool "R3000"
         depends on SYS_HAS_CPU_R3000
         select CPU_HAS_WB
         select CPU_R3K_TLB
         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_R4300
         bool "R4300"
         depends on SYS_HAS_CPU_R4300
         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_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HUGEPAGES
         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_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HUGEPAGES
 
 config CPU_R5000
         bool "R5000"
         depends on SYS_HAS_CPU_R5000
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HUGEPAGES
         help
           MIPS Technologies R5000-series processors other than the Nevada.
 
 config CPU_R5500
         bool "R5500"
         depends on SYS_HAS_CPU_R5500
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HUGEPAGES
         help
           NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
           instruction set.
 
 config CPU_NEVADA
         bool "RM52xx"
         depends on SYS_HAS_CPU_NEVADA
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HUGEPAGES
         help
           QED / PMC-Sierra RM52xx-series ("Nevada") processors.
 
 config CPU_R10000
         bool "R10000"
         depends on SYS_HAS_CPU_R10000
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         help
           MIPS Technologies R10000-series processors.
 
 config CPU_RM7000
         bool "RM7000"
         depends on SYS_HAS_CPU_RM7000
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
 
 config CPU_SB1
         bool "SB1"
         depends on SYS_HAS_CPU_SB1
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         select WEAK_ORDERING
 
 config CPU_CAVIUM_OCTEON
         bool "Cavium Octeon processor"
         depends on SYS_HAS_CPU_CAVIUM_OCTEON
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_64BIT_KERNEL
         select WEAK_ORDERING
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
         select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
         select MIPS_L1_CACHE_SHIFT_7
         select HAVE_KVM
         help
           The Cavium Octeon processor is a highly integrated chip containing
           many ethernet hardware widgets for networking tasks. The processor
           can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
           Full details can be found at http://www.caviumnetworks.com.
 
 config CPU_BMIPS
         bool "Broadcom BMIPS"
         depends on SYS_HAS_CPU_BMIPS
         select CPU_MIPS32
         select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
         select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
         select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
         select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
         select CPU_SUPPORTS_32BIT_KERNEL
         select DMA_NONCOHERENT
         select IRQ_MIPS_CPU
         select SWAP_IO_SPACE
         select WEAK_ORDERING
         select CPU_SUPPORTS_HIGHMEM
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_CPUFREQ
         select MIPS_EXTERNAL_TIMER
         select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
         help
           Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
 
 endchoice
 
 config CPU_MIPS32_3_5_FEATURES
         bool "MIPS32 Release 3.5 Features"
         depends on SYS_HAS_CPU_MIPS32_R3_5
         depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
                    CPU_P5600
         help
           Choose this option to build a kernel for release 2 or later of the
           MIPS32 architecture including features from the 3.5 release such as
           support for Enhanced Virtual Addressing (EVA).
 
 config CPU_MIPS32_3_5_EVA
         bool "Enhanced Virtual Addressing (EVA)"
         depends on CPU_MIPS32_3_5_FEATURES
         select EVA
         default y
         help
           Choose this option if you want to enable the Enhanced Virtual
           Addressing (EVA) on your MIPS32 core (such as proAptiv).
           One of its primary benefits is an increase in the maximum size
           of lowmem (up to 3GB). If unsure, say 'N' here.
 
 config CPU_MIPS32_R5_FEATURES
         bool "MIPS32 Release 5 Features"
         depends on SYS_HAS_CPU_MIPS32_R5
         depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
         help
           Choose this option to build a kernel for release 2 or later of the
           MIPS32 architecture including features from release 5 such as
           support for Extended Physical Addressing (XPA).
 
 config CPU_MIPS32_R5_XPA
         bool "Extended Physical Addressing (XPA)"
         depends on CPU_MIPS32_R5_FEATURES
         depends on !EVA
         depends on !PAGE_SIZE_4KB
         depends on SYS_SUPPORTS_HIGHMEM
         select XPA
         select HIGHMEM
         select PHYS_ADDR_T_64BIT
         default n
         help
           Choose this option if you want to enable the Extended Physical
           Addressing (XPA) on your MIPS32 core (such as P5600 series). The
           benefit is to increase physical addressing equal to or greater
           than 40 bits. Note that this has the side effect of turning on
           64-bit addressing which in turn makes the PTEs 64-bit in size.
           If unsure, say 'N' here.
 
 if CPU_LOONGSON2F
 config CPU_NOP_WORKAROUNDS
         bool
 
 config CPU_JUMP_WORKAROUNDS
         bool
 
 config CPU_LOONGSON2F_WORKAROUNDS
         bool "Loongson 2F Workarounds"
         default y
         select CPU_NOP_WORKAROUNDS
         select CPU_JUMP_WORKAROUNDS
         help
           Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
           require workarounds.  Without workarounds the system may hang
           unexpectedly.  For more information please refer to the gas
           -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
 
           Loongson 2F03 and later have fixed these issues and no workarounds
           are needed.  The workarounds have no significant side effect on them
           but may decrease the performance of the system so this option should
           be disabled unless the kernel is intended to be run on 2F01 or 2F02
           systems.
 
           If unsure, please say Y.
 endif # CPU_LOONGSON2F
 
 config SYS_SUPPORTS_ZBOOT
         bool
         select HAVE_KERNEL_GZIP
         select HAVE_KERNEL_BZIP2
         select HAVE_KERNEL_LZ4
         select HAVE_KERNEL_LZMA
         select HAVE_KERNEL_LZO
         select HAVE_KERNEL_XZ
         select HAVE_KERNEL_ZSTD
 
 config SYS_SUPPORTS_ZBOOT_UART16550
         bool
         select SYS_SUPPORTS_ZBOOT
 
 config SYS_SUPPORTS_ZBOOT_UART_PROM
         bool
         select SYS_SUPPORTS_ZBOOT
 
 config CPU_LOONGSON2EF
         bool
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_64BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_HUGEPAGES
         select ARCH_HAS_PHYS_TO_DMA
 
 config CPU_LOONGSON32
         bool
         select CPU_MIPS32
         select CPU_MIPSR2
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_SUPPORTS_HIGHMEM
         select CPU_SUPPORTS_CPUFREQ
 
 config CPU_BMIPS32_3300
         select SMP_UP if SMP
         bool
 
 config CPU_BMIPS4350
         bool
         select SYS_SUPPORTS_SMP
         select SYS_SUPPORTS_HOTPLUG_CPU
 
 config CPU_BMIPS4380
         bool
         select MIPS_L1_CACHE_SHIFT_6
         select SYS_SUPPORTS_SMP
         select SYS_SUPPORTS_HOTPLUG_CPU
         select CPU_HAS_RIXI
 
 config CPU_BMIPS5000
         bool
         select MIPS_CPU_SCACHE
         select MIPS_L1_CACHE_SHIFT_7
         select SYS_SUPPORTS_SMP
         select SYS_SUPPORTS_HOTPLUG_CPU
         select CPU_HAS_RIXI
 
 config SYS_HAS_CPU_LOONGSON64
         bool
         select CPU_SUPPORTS_CPUFREQ
         select CPU_HAS_RIXI
 
 config SYS_HAS_CPU_LOONGSON2E
         bool
 
 config SYS_HAS_CPU_LOONGSON2F
         bool
         select CPU_SUPPORTS_CPUFREQ
         select CPU_SUPPORTS_ADDRWINCFG if 64BIT
 
 config SYS_HAS_CPU_LOONGSON1B
         bool
 
 config SYS_HAS_CPU_LOONGSON1C
         bool
 
 config SYS_HAS_CPU_MIPS32_R1
         bool
 
 config SYS_HAS_CPU_MIPS32_R2
         bool
 
 config SYS_HAS_CPU_MIPS32_R3_5
         bool
 
 config SYS_HAS_CPU_MIPS32_R5
         bool
         select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_MIPS32_R6
         bool
         select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_MIPS64_R1
         bool
 
 config SYS_HAS_CPU_MIPS64_R2
         bool
 
 config SYS_HAS_CPU_MIPS64_R5
         bool
         select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_MIPS64_R6
         bool
         select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_P5600
         bool
         select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_R3000
         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_R5500
         bool
 
 config SYS_HAS_CPU_NEVADA
         bool
 
 config SYS_HAS_CPU_R10000
         bool
         select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
 
 config SYS_HAS_CPU_RM7000
         bool
 
 config SYS_HAS_CPU_SB1
         bool
 
 config SYS_HAS_CPU_CAVIUM_OCTEON
         bool
 
 config SYS_HAS_CPU_BMIPS
         bool
 
 config SYS_HAS_CPU_BMIPS32_3300
         bool
         select SYS_HAS_CPU_BMIPS
 
 config SYS_HAS_CPU_BMIPS4350
         bool
         select SYS_HAS_CPU_BMIPS
 
 config SYS_HAS_CPU_BMIPS4380
         bool
         select SYS_HAS_CPU_BMIPS
 
 config SYS_HAS_CPU_BMIPS5000
         bool
         select SYS_HAS_CPU_BMIPS
         select ARCH_HAS_SYNC_DMA_FOR_CPU
 
 #
 # 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 || CPU_MIPS32_R5 || \
                      CPU_MIPS32_R6 || CPU_P5600
 
 config CPU_MIPS64
         bool
         default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
                      CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON
 
 #
 # These indicate the revision of the architecture
 #
 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 || CPU_CAVIUM_OCTEON
         select CPU_HAS_RIXI
         select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
         select MIPS_SPRAM
 
 config CPU_MIPSR5
         bool
         default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
         select CPU_HAS_RIXI
         select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
         select MIPS_SPRAM
 
 config CPU_MIPSR6
         bool
         default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
         select CPU_HAS_RIXI
         select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
         select HAVE_ARCH_BITREVERSE
         select MIPS_ASID_BITS_VARIABLE
         select MIPS_CRC_SUPPORT
         select MIPS_SPRAM
 
 config TARGET_ISA_REV
         int
         default 1 if CPU_MIPSR1
         default 2 if CPU_MIPSR2
         default 5 if CPU_MIPSR5
         default 6 if CPU_MIPSR6
         default 0
         help
           Reflects the ISA revision being targeted by the kernel build. This
           is effectively the Kconfig equivalent of MIPS_ISA_REV.
 
 config EVA
         bool
 
 config XPA
         bool
 
 config SYS_SUPPORTS_32BIT_KERNEL
         bool
 config SYS_SUPPORTS_64BIT_KERNEL
         bool
 config CPU_SUPPORTS_32BIT_KERNEL
         bool
 config CPU_SUPPORTS_64BIT_KERNEL
         bool
 config CPU_SUPPORTS_CPUFREQ
         bool
 config CPU_SUPPORTS_ADDRWINCFG
         bool
 config CPU_SUPPORTS_HUGEPAGES
         bool
         depends on !(32BIT && (PHYS_ADDR_T_64BIT || EVA))
 config MIPS_PGD_C0_CONTEXT
         bool
         depends on 64BIT
         default y if (CPU_MIPSR2 || CPU_MIPSR6)
 
 #
 # Set to y for ptrace access to watch registers.
 #
 config HARDWARE_WATCHPOINTS
         bool
         default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
 
 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
 
 config MIPS_VA_BITS_48
         bool "48 bits virtual memory"
         depends on 64BIT
         help
           Support a maximum at least 48 bits of application virtual
           memory.  Default is 40 bits or less, depending on the CPU.
           For page sizes 16k and above, this option results in a small
           memory overhead for page tables.  For 4k page size, a fourth
           level of page tables is added which imposes both a memory
           overhead as well as slower TLB fault handling.
 
           If unsure, say N.
 
 config ZBOOT_LOAD_ADDRESS
         hex "Compressed kernel load address"
         default 0xffffffff80400000 if BCM47XX
         default 0x0
         depends on SYS_SUPPORTS_ZBOOT
         help
           The address to load compressed kernel, aka vmlinuz.
 
           This is only used if non-zero.
 
 choice
         prompt "Kernel page size"
         default PAGE_SIZE_4KB
 
 config PAGE_SIZE_4KB
         bool "4kB"
         depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
         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 CPU_CAVIUM_OCTEON
         depends on !MIPS_VA_BITS_48
         help
           Using 8kB page size will result in higher performance kernel at
           the price of higher memory consumption.  This option is available
           only on cnMIPS processors.  Note that you will need a suitable Linux
           distribution to support this.
 
 config PAGE_SIZE_16KB
         bool "16kB"
         depends on !CPU_R3000
         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_32KB
         bool "32kB"
         depends on CPU_CAVIUM_OCTEON
         depends on !MIPS_VA_BITS_48
         help
           Using 32kB page size will result in higher performance kernel at
           the price of higher memory consumption.  This option is available
           only on cnMIPS cores.  Note that you will need a suitable Linux
           distribution to support this.
 
 config PAGE_SIZE_64KB
         bool "64kB"
         depends on !CPU_R3000
         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 FORCE_MAX_ZONEORDER
         int "Maximum zone order"
         range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
         default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
         range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
         default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
         range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
         default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
         range 0 64
         default "11"
         help
           The kernel memory allocator divides physically contiguous memory
           blocks into "zones", where each zone is a power of two number of
           pages.  This option selects the largest power of two that the kernel
           keeps in the memory allocator.  If you need to allocate very large
           blocks of physically contiguous memory, then you may need to
           increase this value.
 
           This config option is actually maximum order plus one. For example,
           a value of 11 means that the largest free memory block is 2^10 pages.
 
           The page size is not necessarily 4KB.  Keep this in mind
           when choosing a value for this option.
 
 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
 
 config CPU_GENERIC_DUMP_TLB
         bool
         default y if !CPU_R3000
 
 config MIPS_FP_SUPPORT
         bool "Floating Point support" if EXPERT
         default y
         help
           Select y to include support for floating point in the kernel
           including initialization of FPU hardware, FP context save & restore
           and emulation of an FPU where necessary. Without this support any
           userland program attempting to use floating point instructions will
           receive a SIGILL.
 
           If you know that your userland will not attempt to use floating point
           instructions then you can say n here to shrink the kernel a little.
 
           If unsure, say y.
 
 config CPU_R2300_FPU
         bool
         depends on MIPS_FP_SUPPORT
         default y if CPU_R3000
 
 config CPU_R3K_TLB
         bool
 
 config CPU_R4K_FPU
         bool
         depends on MIPS_FP_SUPPORT
         default y if !CPU_R2300_FPU
 
 config CPU_R4K_CACHE_TLB
         bool
         default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
 
 config MIPS_MT_SMP
         bool "MIPS MT SMP support (1 TC on each available VPE)"
         default y
         depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
         select CPU_MIPSR2_IRQ_VI
         select CPU_MIPSR2_IRQ_EI
         select SYNC_R4K
         select MIPS_MT
         select SMP
         select SMP_UP
         select SYS_SUPPORTS_SMP
         select SYS_SUPPORTS_SCHED_SMT
         select MIPS_PERF_SHARED_TC_COUNTERS
         help
           This is a kernel model which is known as SMVP. This is supported
           on cores with the MT ASE and uses the available VPEs to implement
           virtual processors which supports SMP. This is equivalent to the
           Intel Hyperthreading feature. For further information go to
           <http://www.imgtec.com/mips/mips-multithreading.asp>.
 
 config MIPS_MT
         bool
 
 config SCHED_SMT
         bool "SMT (multithreading) scheduler support"
         depends on SYS_SUPPORTS_SCHED_SMT
         default n
         help
           SMT scheduler support improves the CPU scheduler's decision making
           when dealing with MIPS MT enabled cores at a cost of slightly
           increased overhead in some places. If unsure say N here.
 
 config SYS_SUPPORTS_SCHED_SMT
         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
 
 config MIPSR2_TO_R6_EMULATOR
         bool "MIPS R2-to-R6 emulator"
         depends on CPU_MIPSR6
         depends on MIPS_FP_SUPPORT
         default y
         help
           Choose this option if you want to run non-R6 MIPS userland code.
           Even if you say 'Y' here, the emulator will still be disabled by
           default. You can enable it using the 'mipsr2emu' kernel option.
           The only reason this is a build-time option is to save ~14K from the
           final kernel image.
 
 config SYS_SUPPORTS_VPE_LOADER
         bool
         depends on SYS_SUPPORTS_MULTITHREADING
         help
           Indicates that the platform supports the VPE loader, and provides
           physical_memsize.
 
 config MIPS_VPE_LOADER
         bool "VPE loader support."
         depends on SYS_SUPPORTS_VPE_LOADER && MODULES
         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_VPE_LOADER_CMP
         bool
         default "y"
         depends on MIPS_VPE_LOADER && MIPS_CMP
 
 config MIPS_VPE_LOADER_MT
         bool
         default "y"
         depends on MIPS_VPE_LOADER && !MIPS_CMP
 
 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.
 
 config MIPS_VPE_APSP_API
         bool "Enable support for AP/SP API (RTLX)"
         depends on MIPS_VPE_LOADER
 
 config MIPS_VPE_APSP_API_CMP
         bool
         default "y"
         depends on MIPS_VPE_APSP_API && MIPS_CMP
 
 config MIPS_VPE_APSP_API_MT
         bool
         default "y"
         depends on MIPS_VPE_APSP_API && !MIPS_CMP
 
 config MIPS_CMP
         bool "MIPS CMP framework support (DEPRECATED)"
         depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
         select SMP
         select SYNC_R4K
         select SYS_SUPPORTS_SMP
         select WEAK_ORDERING
         default n
         help
           Select this if you are using a bootloader which implements the "CMP
           framework" protocol (ie. YAMON) and want your kernel to make use of
           its ability to start secondary CPUs.
 
           Unless you have a specific need, you should use CONFIG_MIPS_CPS
           instead of this.
 
 config MIPS_CPS
         bool "MIPS Coherent Processing System support"
         depends on SYS_SUPPORTS_MIPS_CPS
         select MIPS_CM
         select MIPS_CPS_PM if HOTPLUG_CPU
         select SMP
         select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
         select SYS_SUPPORTS_HOTPLUG_CPU
         select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
         select SYS_SUPPORTS_SMP
         select WEAK_ORDERING
         select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
         help
           Select this if you wish to run an SMP kernel across multiple cores
           within a MIPS Coherent Processing System. When this option is
           enabled the kernel will probe for other cores and boot them with
           no external assistance. It is safe to enable this when hardware
           support is unavailable.
 
 config MIPS_CPS_PM
         depends on MIPS_CPS
         bool
 
 config MIPS_CM
         bool
         select MIPS_CPC
 
 config MIPS_CPC
         bool
 
 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
 
 choice
         prompt "SmartMIPS or microMIPS ASE support"
 
 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
         bool "None"
         help
           Select this if you want neither microMIPS nor SmartMIPS support
 
 config CPU_HAS_SMARTMIPS
         depends on SYS_SUPPORTS_SMARTMIPS
         bool "SmartMIPS"
         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_MICROMIPS
         depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
         bool "microMIPS"
         help
           When this option is enabled the kernel will be built using the
           microMIPS ISA
 
 endchoice
 
 config CPU_HAS_MSA
         bool "Support for the MIPS SIMD Architecture"
         depends on CPU_SUPPORTS_MSA
         depends on MIPS_FP_SUPPORT
         depends on 64BIT || MIPS_O32_FP64_SUPPORT
         help
           MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
           and a set of SIMD instructions to operate on them. When this option
           is enabled the kernel will support allocating & switching MSA
           vector register contexts. If you know that your kernel will only be
           running on CPUs which do not support MSA or that your userland will
           not be making use of it then you may wish to say N here to reduce
           the size & complexity of your kernel.
 
           If unsure, say Y.
 
 config CPU_HAS_WB
         bool
 
 config XKS01
         bool
 
 config CPU_HAS_DIEI
         depends on !CPU_DIEI_BROKEN
         bool
 
 config CPU_DIEI_BROKEN
         bool
 
 config CPU_HAS_RIXI
         bool
 
 config CPU_NO_LOAD_STORE_LR
         bool
         help
           CPU lacks support for unaligned load and store instructions:
           LWL, LWR, SWL, SWR (Load/store word left/right).
           LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
           systems).
 
 #
 # 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
 
 #
 # CPU non-features
 #
 
 # Work around the "daddi" and "daddiu" CPU errata:
 #
 # - The `daddi' instruction fails to trap on overflow.
 #   "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
 #   erratum #23
 #
 # - The `daddiu' instruction can produce an incorrect result.
 #   "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
 #   erratum #41
 #   "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum
 #   #15
 #   "MIPS R4400PC/SC Errata, Processor Revision 1.0", erratum #7
 #   "MIPS R4400MC Errata, Processor Revision 1.0", erratum #5
 config CPU_DADDI_WORKAROUNDS
         bool
 
 # Work around certain R4000 CPU errata (as implemented by GCC):
 #
 # - A double-word or a variable shift may give an incorrect result
 #   if executed immediately after starting an integer division:
 #   "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
 #   erratum #28
 #   "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum
 #   #19
 #
 # - A double-word or a variable shift may give an incorrect result
 #   if executed while an integer multiplication is in progress:
 #   "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
 #   errata #16 & #28
 #
 # - An integer division may give an incorrect result if started in
 #   a delay slot of a taken branch or a jump:
 #   "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
 #   erratum #52
 config CPU_R4000_WORKAROUNDS
         bool
         select CPU_R4400_WORKAROUNDS
 
 # Work around certain R4400 CPU errata (as implemented by GCC):
 #
 # - A double-word or a variable shift may give an incorrect result
 #   if executed immediately after starting an integer division:
 #   "MIPS R4400MC Errata, Processor Revision 1.0", erratum #10
 #   "MIPS R4400MC Errata, Processor Revision 2.0 & 3.0", erratum #4
 config CPU_R4400_WORKAROUNDS
         bool
 
 config CPU_R4X00_BUGS64
         bool
         default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
 
 config MIPS_ASID_SHIFT
         int
         default 6 if CPU_R3000
         default 0
 
 config MIPS_ASID_BITS
         int
         default 0 if MIPS_ASID_BITS_VARIABLE
         default 6 if CPU_R3000
         default 8
 
 config MIPS_ASID_BITS_VARIABLE
         bool
 
 config MIPS_CRC_SUPPORT
         bool
 
 # R4600 erratum.  Due to the lack of errata information the exact
 # technical details aren't known.  I've experimentally found that disabling
 # interrupts during indexed I-cache flushes seems to be sufficient to deal
 # with the issue.
 config WAR_R4600_V1_INDEX_ICACHEOP
         bool
 
 # Pleasures of the R4600 V1.x.  Cite from the IDT R4600 V1.7 errata:
 #
 #  18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D,
 #      Hit_Invalidate_D and Create_Dirty_Excl_D should only be
 #      executed if there is no other dcache activity. If the dcache is
 #      accessed for another instruction immediately preceding when these
 #      cache instructions are executing, it is possible that the dcache
 #      tag match outputs used by these cache instructions will be
 #      incorrect. These cache instructions should be preceded by at least
 #      four instructions that are not any kind of load or store
 #      instruction.
 #
 #      This is not allowed:    lw
 #                              nop
 #                              nop
 #                              nop
 #                              cache       Hit_Writeback_Invalidate_D
 #
 #      This is allowed:        lw
 #                              nop
 #                              nop
 #                              nop
 #                              nop
 #                              cache       Hit_Writeback_Invalidate_D
 config WAR_R4600_V1_HIT_CACHEOP
         bool
 
 # Writeback and invalidate the primary cache dcache before DMA.
 #
 # R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D,
 # Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only
 # operate correctly if the internal data cache refill buffer is empty.  These
 # CACHE instructions should be separated from any potential data cache miss
 # by a load instruction to an uncached address to empty the response buffer."
 # (Revision 2.0 device errata from IDT available on https://www.idt.com/
 # in .pdf format.)
 config WAR_R4600_V2_HIT_CACHEOP
         bool
 
 # From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for
 # the line which this instruction itself exists, the following
 # operation is not guaranteed."
 #
 # Workaround: do two phase flushing for Index_Invalidate_I
 config WAR_TX49XX_ICACHE_INDEX_INV
         bool
 
 # The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra
 # opposes it being called that) where invalid instructions in the same
 # I-cache line worth of instructions being fetched may case spurious
 # exceptions.
 config WAR_ICACHE_REFILLS
         bool
 
 # On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that
 # may cause ll / sc and lld / scd sequences to execute non-atomically.
 config WAR_R10000_LLSC
         bool
 
 # 34K core erratum: "Problems Executing the TLBR Instruction"
 config WAR_MIPS34K_MISSED_ITLB
         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 && !CPU_MIPS32_3_5_EVA
         select KMAP_LOCAL
 
 config CPU_SUPPORTS_HIGHMEM
         bool
 
 config SYS_SUPPORTS_HIGHMEM
         bool
 
 config SYS_SUPPORTS_SMARTMIPS
         bool
 
 config SYS_SUPPORTS_MICROMIPS
         bool
 
 config SYS_SUPPORTS_MIPS16
         bool
         help
           This option must be set if a kernel might be executed on a MIPS16-
           enabled CPU even if MIPS16 is not actually being used.  In other
           words, it makes the kernel MIPS16-tolerant.
 
 config CPU_SUPPORTS_MSA
         bool
 
 config ARCH_FLATMEM_ENABLE
         def_bool y
         depends on !NUMA && !CPU_LOONGSON2EF
 
 config ARCH_SPARSEMEM_ENABLE
         bool
 
 config NUMA
         bool "NUMA Support"
         depends on SYS_SUPPORTS_NUMA
         select SMP
         select HAVE_SETUP_PER_CPU_AREA
         select NEED_PER_CPU_EMBED_FIRST_CHUNK
         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 leave this option
           disabled.
 
 config SYS_SUPPORTS_NUMA
         bool
 
 config HAVE_ARCH_NODEDATA_EXTENSION
         bool
 
 config RELOCATABLE
         bool "Relocatable kernel"
         depends on SYS_SUPPORTS_RELOCATABLE
         depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
                    CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
                    CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
                    CPU_P5600 || CAVIUM_OCTEON_SOC || \
                    CPU_LOONGSON64
         help
           This builds a kernel image that retains relocation information
           so it can be loaded someplace besides the default 1MB.
           The relocations make the kernel binary about 15% larger,
           but are discarded at runtime
 
 config RELOCATION_TABLE_SIZE
         hex "Relocation table size"
         depends on RELOCATABLE
         range 0x0 0x01000000
         default "0x00200000" if CPU_LOONGSON64
         default "0x00100000"
         help
           A table of relocation data will be appended to the kernel binary
           and parsed at boot to fix up the relocated kernel.
 
           This option allows the amount of space reserved for the table to be
           adjusted, although the default of 1Mb should be ok in most cases.
 
           The build will fail and a valid size suggested if this is too small.
 
           If unsure, leave at the default value.
 
 config RANDOMIZE_BASE
         bool "Randomize the address of the kernel image"
         depends on RELOCATABLE
         help
           Randomizes the physical and virtual address at which the
           kernel image is loaded, as a security feature that
           deters exploit attempts relying on knowledge of the location
           of kernel internals.
 
           Entropy is generated using any coprocessor 0 registers available.
 
           The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
 
           If unsure, say N.
 
 config RANDOMIZE_BASE_MAX_OFFSET
         hex "Maximum kASLR offset" if EXPERT
         depends on RANDOMIZE_BASE
         range 0x0 0x40000000 if EVA || 64BIT
         range 0x0 0x08000000
         default "0x01000000"
         help
           When kASLR is active, this provides the maximum offset that will
           be applied to the kernel image. It should be set according to the
           amount of physical RAM available in the target system minus
           PHYSICAL_START and must be a power of 2.
 
           This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
           EVA or 64-bit. The default is 16Mb.
 
 config NODES_SHIFT
         int
         default "6"
         depends on NUMA
 
 config HW_PERF_EVENTS
         bool "Enable hardware performance counter support for perf events"
         depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_LOONGSON64)
         default y
         help
           Enable hardware performance counter support for perf events. If
           disabled, perf events will use software events only.
 
 config DMI
         bool "Enable DMI scanning"
         depends on MACH_LOONGSON64
         select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
         default y
         help
           Enabled scanning of DMI to identify machine quirks. Say Y
           here unless you have verified that your setup is not
           affected by entries in the DMI blacklist. Required by PNP
           BIOS code.
 
 config SMP
         bool "Multi-Processing support"
         depends on SYS_SUPPORTS_SMP
         help
           This enables support for systems with more than one CPU. If you have
           a system with only one CPU, say N. If you have a system with more
           than one CPU, say Y.
 
           If you say N here, the kernel will run on uni- 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,
           uniprocessor machines. On a uniprocessor 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 SMP-HOWTO available at
           <https://www.tldp.org/docs.html#howto>.
 
           If you don't know what to do here, say N.
 
 config HOTPLUG_CPU
         bool "Support for hot-pluggable CPUs"
         depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
         help
           Say Y here to allow turning CPUs off and on. CPUs can be
           controlled through /sys/devices/system/cpu.
           (Note: power management support will enable this option
             automatically on SMP systems. )
           Say N if you want to disable CPU hotplug.
 
 config SMP_UP
         bool
 
 config SYS_SUPPORTS_MIPS_CMP
         bool
 
 config SYS_SUPPORTS_MIPS_CPS
         bool
 
 config SYS_SUPPORTS_SMP
         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 (2-256)"
         range 2 256
         depends on SMP
         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.
 
 config MIPS_PERF_SHARED_TC_COUNTERS
         bool
 
 config MIPS_NR_CPU_NR_MAP_1024
         bool
 
 config MIPS_NR_CPU_NR_MAP
         int
         depends on SMP
         default 1024 if MIPS_NR_CPU_NR_MAP_1024
         default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
 
 #
 # Timer Interrupt Frequency Configuration
 #
 
 choice
         prompt "Timer frequency"
         default HZ_250
         help
           Allows the configuration of the timer frequency.
 
         config HZ_24
                 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
 
         config HZ_48
                 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
 
         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_24HZ
         bool
 
 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_24HZ && \
                      !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 24 if HZ_24
         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
 
 config SCHED_HRTICK
         def_bool HIGH_RES_TIMERS
 
 config KEXEC
         bool "Kexec system call"
         select KEXEC_CORE
         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.  As of this writing the exact hardware
           interface is strongly in flux, so no good recommendation can be
           made.
 
 config CRASH_DUMP
         bool "Kernel crash dumps"
         help
           Generate crash dump after being started by kexec.
           This should be normally only set in special crash dump kernels
           which are loaded in the main kernel with kexec-tools into
           a specially reserved region and then later executed after
           a crash by kdump/kexec. The crash dump kernel must be compiled
           to a memory address not used by the main kernel or firmware using
           PHYSICAL_START.
 
 config PHYSICAL_START
         hex "Physical address where the kernel is loaded"
         default "0xffffffff84000000"
         depends on CRASH_DUMP
         help
           This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
           If you plan to use kernel for capturing the crash dump change
           this value to start of the reserved region (the "X" value as
           specified in the "crashkernel=YM@XM" command line boot parameter
           passed to the panic-ed kernel).
 
 config MIPS_O32_FP64_SUPPORT
         bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
         depends on 32BIT || MIPS32_O32
         help
           When this is enabled, the kernel will support use of 64-bit floating
           point registers with binaries using the O32 ABI along with the
           EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
           32-bit MIPS systems this support is at the cost of increasing the
           size and complexity of the compiled FPU emulator. Thus if you are
           running a MIPS32 system and know that none of your userland binaries
           will require 64-bit floating point, you may wish to reduce the size
           of your kernel & potentially improve FP emulation performance by
           saying N here.
 
           Although binutils currently supports use of this flag the details
           concerning its effect upon the O32 ABI in userland are still being
           worked on. In order to avoid userland becoming dependent upon current
           behaviour before the details have been finalised, this option should
           be considered experimental and only enabled by those working upon
           said details.
 
           If unsure, say N.
 
 config USE_OF
         bool
         select OF
         select OF_EARLY_FLATTREE
         select IRQ_DOMAIN
 
 config UHI_BOOT
         bool
 
 config BUILTIN_DTB
         bool
 
 choice
         prompt "Kernel appended dtb support" if USE_OF
         default MIPS_NO_APPENDED_DTB
 
         config MIPS_NO_APPENDED_DTB
                 bool "None"
                 help
                   Do not enable appended dtb support.
 
         config MIPS_ELF_APPENDED_DTB
                 bool "vmlinux"
                 help
                   With this option, the boot code will look for a device tree binary
                   DTB) included in the vmlinux ELF section .appended_dtb. By default
                   it is empty and the DTB can be appended using binutils command
                   objcopy:
 
                     objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
 
                   This is meant as a backward compatibility convenience for those
                   systems with a bootloader that can't be upgraded to accommodate
                   the documented boot protocol using a device tree.
 
         config MIPS_RAW_APPENDED_DTB
                 bool "vmlinux.bin or vmlinuz.bin"
                 help
                   With this option, the boot code will look for a device tree binary
                   DTB) appended to raw vmlinux.bin or vmlinuz.bin.
                   (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
 
                   This is meant as a backward compatibility convenience for those
                   systems with a bootloader that can't be upgraded to accommodate
                   the documented boot protocol using a device tree.
 
                   Beware that there is very little in terms of protection against
                   this option being confused by leftover garbage in memory that might
                   look like a DTB header after a reboot if no actual DTB is appended
                   to vmlinux.bin.  Do not leave this option active in a production kernel
                   if you don't intend to always append a DTB.
 endchoice
 
 choice
         prompt "Kernel command line type" if !CMDLINE_OVERRIDE
         default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
                                          !MACH_LOONGSON64 && !MIPS_MALTA && \
                                          !CAVIUM_OCTEON_SOC
         default MIPS_CMDLINE_FROM_BOOTLOADER
 
         config MIPS_CMDLINE_FROM_DTB
                 depends on USE_OF
                 bool "Dtb kernel arguments if available"
 
         config MIPS_CMDLINE_DTB_EXTEND
                 depends on USE_OF
                 bool "Extend dtb kernel arguments with bootloader arguments"
 
         config MIPS_CMDLINE_FROM_BOOTLOADER
                 bool "Bootloader kernel arguments if available"
 
         config MIPS_CMDLINE_BUILTIN_EXTEND
                 depends on CMDLINE_BOOL
                 bool "Extend builtin kernel arguments with bootloader arguments"
 endchoice
 
 endmenu
 
 config LOCKDEP_SUPPORT
         bool
         default y
 
 config STACKTRACE_SUPPORT
         bool
         default y
 
 config PGTABLE_LEVELS
         int
         default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
         default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
         default 2
 
 config MIPS_AUTO_PFN_OFFSET
         bool
 
 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
 
 config PCI_DRIVERS_GENERIC
         select PCI_DOMAINS_GENERIC if PCI
         bool
 
 config PCI_DRIVERS_LEGACY
         def_bool !PCI_DRIVERS_GENERIC
         select NO_GENERIC_PCI_IOPORT_MAP
         select PCI_DOMAINS if PCI
 
 #
 # 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 TC
         bool "TURBOchannel support"
         depends on MACH_DECSTATION
         help
           TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
           processors.  TURBOchannel programming specifications are available
           at:
           <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
           and:
           <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
           Linux driver support status is documented at:
           <http://www.linux-mips.org/wiki/DECstation>
 
 config MMU
         bool
         default y
 
 config ARCH_MMAP_RND_BITS_MIN
         default 12 if 64BIT
         default 8
 
 config ARCH_MMAP_RND_BITS_MAX
         default 18 if 64BIT
         default 15
 
 config ARCH_MMAP_RND_COMPAT_BITS_MIN
         default 8
 
 config ARCH_MMAP_RND_COMPAT_BITS_MAX
         default 15
 
 config I8253
         bool
         select CLKSRC_I8253
         select CLKEVT_I8253
         select MIPS_EXTERNAL_TIMER
 endmenu
 
 config TRAD_SIGNALS
         bool
 
 config MIPS32_COMPAT
         bool
 
 config COMPAT
         bool
 
 config MIPS32_O32
         bool "Kernel support for o32 binaries"
         depends on 64BIT
         select ARCH_WANT_OLD_COMPAT_IPC
         select COMPAT
         select 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 64BIT
         select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
         select COMPAT
         select 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 CC_HAS_MNO_BRANCH_LIKELY
         def_bool y
         depends on $(cc-option,-mno-branch-likely)
 
 menu "Power management options"
 
 config ARCH_HIBERNATION_POSSIBLE
         def_bool y
         depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
 
 config ARCH_SUSPEND_POSSIBLE
         def_bool y
         depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
 
 source "kernel/power/Kconfig"
 
 endmenu
 
 config MIPS_EXTERNAL_TIMER
         bool
 
 menu "CPU Power Management"
 
 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
 source "drivers/cpufreq/Kconfig"
 endif # CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
 
 source "drivers/cpuidle/Kconfig"
 
 endmenu
 
 source "arch/mips/kvm/Kconfig"
 
 source "arch/mips/vdso/Kconfig"

This page was automatically generated by the 2.1.0 LXR engine. The LXR team