#
  # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
  #
  # This program is free software; you can redistribute it and/or modify
  # it under the terms of the GNU General Public License version 2 as
  # published by the Free Software Foundation.
  #
  
  config ARC
  	def_bool y
  	select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
  	select BUILDTIME_EXTABLE_SORT
  	select COMMON_CLK
  	select CLONE_BACKWARDS
  	# ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev
  	select DEVTMPFS if !INITRAMFS_SOURCE=""
  	select GENERIC_ATOMIC64
  	select GENERIC_CLOCKEVENTS
  	select GENERIC_FIND_FIRST_BIT
  	# for now, we don't need GENERIC_IRQ_PROBE, CONFIG_GENERIC_IRQ_CHIP
  	select GENERIC_IRQ_SHOW
  	select GENERIC_PENDING_IRQ if SMP
  	select GENERIC_SMP_IDLE_THREAD
  	select HAVE_ARCH_KGDB
  	select HAVE_ARCH_TRACEHOOK
  	select HAVE_FUTEX_CMPXCHG
  	select HAVE_IOREMAP_PROT
  	select HAVE_KPROBES
  	select HAVE_KRETPROBES
  	select HAVE_MEMBLOCK
  	select HAVE_MOD_ARCH_SPECIFIC if ARC_DW2_UNWIND
  	select HAVE_OPROFILE
  	select HAVE_PERF_EVENTS
  	select IRQ_DOMAIN
  	select MODULES_USE_ELF_RELA
  	select NO_BOOTMEM
  	select OF
  	select OF_EARLY_FLATTREE
  	select PERF_USE_VMALLOC
  	select HAVE_DEBUG_STACKOVERFLOW
  
  config TRACE_IRQFLAGS_SUPPORT
  	def_bool y
  
  config LOCKDEP_SUPPORT
  	def_bool y
  
  config SCHED_OMIT_FRAME_POINTER
  	def_bool y
  
  config GENERIC_CSUM
  	def_bool y
  
  config RWSEM_GENERIC_SPINLOCK
  	def_bool y
  
  config ARCH_FLATMEM_ENABLE
  	def_bool y
  
  config MMU
  	def_bool y
  
  config NO_IOPORT_MAP
  	def_bool y
  
  config GENERIC_CALIBRATE_DELAY
  	def_bool y
  
  config GENERIC_HWEIGHT
  	def_bool y
  
  config STACKTRACE_SUPPORT
  	def_bool y
  	select STACKTRACE
  
  config HAVE_LATENCYTOP_SUPPORT
  	def_bool y
  
  config HAVE_ARCH_TRANSPARENT_HUGEPAGE
  	def_bool y
  	depends on ARC_MMU_V4
  
  source "init/Kconfig"
  source "kernel/Kconfig.freezer"
  
  menu "ARC Architecture Configuration"
  
  menu "ARC Platform/SoC/Board"
  
  source "arch/arc/plat-sim/Kconfig"
  source "arch/arc/plat-tb10x/Kconfig"
  source "arch/arc/plat-axs10x/Kconfig"
  #New platform adds here
  
  endmenu
  
  choice
  	prompt "ARC Instruction Set"
  	default ISA_ARCOMPACT
  
  config ISA_ARCOMPACT
  	bool "ARCompact ISA"
  	help
  	  The original ARC ISA of ARC600/700 cores
  
  config ISA_ARCV2
  	bool "ARC ISA v2"
  	help
  	  ISA for the Next Generation ARC-HS cores
  
  endchoice
  
  menu "ARC CPU Configuration"
  
  choice
  	prompt "ARC Core"
  	default ARC_CPU_770 if ISA_ARCOMPACT
  	default ARC_CPU_HS if ISA_ARCV2
  
  if ISA_ARCOMPACT
  
  config ARC_CPU_750D
  	bool "ARC750D"
  	select ARC_CANT_LLSC
  	help
  	  Support for ARC750 core
  
  config ARC_CPU_770
  	bool "ARC770"
  	select ARC_HAS_SWAPE
  	help
  	  Support for ARC770 core introduced with Rel 4.10 (Summer 2011)
  	  This core has a bunch of cool new features:
  	  -MMU-v3: Variable Page Sz (4k, 8k, 16k), bigger J-TLB (128x4)
                     Shared Address Spaces (for sharing TLB entires in MMU)
  	  -Caches: New Prog Model, Region Flush
  	  -Insns: endian swap, load-locked/store-conditional, time-stamp-ctr
  
  endif	#ISA_ARCOMPACT
  
  config ARC_CPU_HS
  	bool "ARC-HS"
  	depends on ISA_ARCV2
  	help
  	  Support for ARC HS38x Cores based on ARCv2 ISA
  	  The notable features are:
  	    - SMP configurations of upto 4 core with coherency
  	    - Optional L2 Cache and IO-Coherency
  	    - Revised Interrupt Architecture (multiple priorites, reg banks,
  	        auto stack switch, auto regfile save/restore)
  	    - MMUv4 (PIPT dcache, Huge Pages)
  	    - Instructions for
  		* 64bit load/store: LDD, STD
  		* Hardware assisted divide/remainder: DIV, REM
  		* Function prologue/epilogue: ENTER_S, LEAVE_S
  		* IRQ enable/disable: CLRI, SETI
  		* pop count: FFS, FLS
  		* SETcc, BMSKN, XBFU...
  
  endchoice
  
  config CPU_BIG_ENDIAN
  	bool "Enable Big Endian Mode"
  	default n
  	help
  	  Build kernel for Big Endian Mode of ARC CPU
  
  config SMP
  	bool "Symmetric Multi-Processing"
  	default n
  	select ARC_HAS_COH_CACHES if ISA_ARCV2
  	select ARC_MCIP if ISA_ARCV2
  	help
  	  This enables support for systems with more than one CPU.
  
  if SMP
  
  config ARC_HAS_COH_CACHES
  	def_bool n
  
  config ARC_HAS_REENTRANT_IRQ_LV2
  	def_bool n
  
  config ARC_MCIP
  	bool "ARConnect Multicore IP (MCIP) Support "
  	depends on ISA_ARCV2
  	help
  	  This IP block enables SMP in ARC-HS38 cores.
  	  It provides for cross-core interrupts, multi-core debug
  	  hardware semaphores, shared memory,....
  
  config NR_CPUS
  	int "Maximum number of CPUs (2-4096)"
  	range 2 4096
  	default "4"
  
  config ARC_SMP_HALT_ON_RESET
  	bool "Enable Halt-on-reset boot mode"
  	default y if ARC_UBOOT_SUPPORT
  	help
  	  In SMP configuration cores can be configured as Halt-on-reset
  	  or they could all start at same time. For Halt-on-reset, non
  	  masters are parked until Master kicks them so they can start of
  	  at designated entry point. For other case, all jump to common
  	  entry point and spin wait for Master's signal.
  
  endif	#SMP
  
  menuconfig ARC_CACHE
  	bool "Enable Cache Support"
  	default y
  	# if SMP, cache enabled ONLY if ARC implementation has cache coherency
  	depends on !SMP || ARC_HAS_COH_CACHES
  
  if ARC_CACHE
  
  config ARC_CACHE_LINE_SHIFT
  	int "Cache Line Length (as power of 2)"
  	range 5 7
  	default "6"
  	help
  	  Starting with ARC700 4.9, Cache line length is configurable,
  	  This option specifies "N", with Line-len = 2 power N
  	  So line lengths of 32, 64, 128 are specified by 5,6,7, respectively
  	  Linux only supports same line lengths for I and D caches.
  
  config ARC_HAS_ICACHE
  	bool "Use Instruction Cache"
  	default y
  
  config ARC_HAS_DCACHE
  	bool "Use Data Cache"
  	default y
  
  config ARC_CACHE_PAGES
  	bool "Per Page Cache Control"
  	default y
  	depends on ARC_HAS_ICACHE || ARC_HAS_DCACHE
  	help
  	  This can be used to over-ride the global I/D Cache Enable on a
  	  per-page basis (but only for pages accessed via MMU such as
  	  Kernel Virtual address or User Virtual Address)
  	  TLB entries have a per-page Cache Enable Bit.
  	  Note that Global I/D ENABLE + Per Page DISABLE works but corollary
  	  Global DISABLE + Per Page ENABLE won't work
  
  config ARC_CACHE_VIPT_ALIASING
  	bool "Support VIPT Aliasing D$"
  	depends on ARC_HAS_DCACHE && ISA_ARCOMPACT
  	default n
  
  endif	#ARC_CACHE
  
  config ARC_HAS_ICCM
  	bool "Use ICCM"
  	help
  	  Single Cycle RAMS to store Fast Path Code
  	default n
  
  config ARC_ICCM_SZ
  	int "ICCM Size in KB"
  	default "64"
  	depends on ARC_HAS_ICCM
  
  config ARC_HAS_DCCM
  	bool "Use DCCM"
  	help
  	  Single Cycle RAMS to store Fast Path Data
  	default n
  
  config ARC_DCCM_SZ
  	int "DCCM Size in KB"
  	default "64"
  	depends on ARC_HAS_DCCM
  
  config ARC_DCCM_BASE
  	hex "DCCM map address"
  	default "0xA0000000"
  	depends on ARC_HAS_DCCM
  
  config ARC_HAS_HW_MPY
  	bool "Use Hardware Multiplier (Normal or Faster XMAC)"
  	default y
  	help
  	  Influences how gcc generates code for MPY operations.
  	  If enabled, MPYxx insns are generated, provided by Standard/XMAC
  	  Multipler. Otherwise software multipy lib is used
  
  choice
  	prompt "MMU Version"
  	default ARC_MMU_V3 if ARC_CPU_770
  	default ARC_MMU_V2 if ARC_CPU_750D
  	default ARC_MMU_V4 if ARC_CPU_HS
  
  if ISA_ARCOMPACT
  
  config ARC_MMU_V1
  	bool "MMU v1"
  	help
  	  Orig ARC700 MMU
  
  config ARC_MMU_V2
  	bool "MMU v2"
  	help
  	  Fixed the deficiency of v1 - possible thrashing in memcpy sceanrio
  	  when 2 D-TLB and 1 I-TLB entries index into same 2way set.
  
  config ARC_MMU_V3
  	bool "MMU v3"
  	depends on ARC_CPU_770
  	help
  	  Introduced with ARC700 4.10: New Features
  	  Variable Page size (1k-16k), var JTLB size 128 x (2 or 4)
  	  Shared Address Spaces (SASID)
  
  endif
  
  config ARC_MMU_V4
  	bool "MMU v4"
  	depends on ISA_ARCV2
  
  endchoice
  
  
  choice
  	prompt "MMU Page Size"
  	default ARC_PAGE_SIZE_8K
  
  config ARC_PAGE_SIZE_8K
  	bool "8KB"
  	help
  	  Choose between 8k vs 16k
  
  config ARC_PAGE_SIZE_16K
  	bool "16KB"
  	depends on ARC_MMU_V3 || ARC_MMU_V4
  
  config ARC_PAGE_SIZE_4K
  	bool "4KB"
  	depends on ARC_MMU_V3 || ARC_MMU_V4
  
  endchoice
  
  if ISA_ARCOMPACT
  
  config ARC_COMPACT_IRQ_LEVELS
  	bool "ARCompact IRQ Priorities: High(2)/Low(1)"
  	default n
  	# Timer HAS to be high priority, for any other high priority config
  	select ARC_IRQ3_LV2
  	# if SMP, LV2 enabled ONLY if ARC implementation has LV2 re-entrancy
  	depends on !SMP || ARC_HAS_REENTRANT_IRQ_LV2
  
  if ARC_COMPACT_IRQ_LEVELS
  
  config ARC_IRQ3_LV2
  	bool
  
  config ARC_IRQ5_LV2
  	bool
  
  config ARC_IRQ6_LV2
  	bool
  
  endif	#ARC_COMPACT_IRQ_LEVELS
  
  config ARC_FPU_SAVE_RESTORE
  	bool "Enable FPU state persistence across context switch"
  	default n
  	help
  	  Double Precision Floating Point unit had dedictaed regs which
  	  need to be saved/restored across context-switch.
  	  Note that ARC FPU is overly simplistic, unlike say x86, which has
  	  hardware pieces to allow software to conditionally save/restore,
  	  based on actual usage of FPU by a task. Thus our implemn does
  	  this for all tasks in system.
  
  endif	#ISA_ARCOMPACT
  
  config ARC_CANT_LLSC
  	def_bool n
  
  config ARC_HAS_LLSC
  	bool "Insn: LLOCK/SCOND (efficient atomic ops)"
  	default y
  	depends on !ARC_CANT_LLSC
  
  config ARC_STAR_9000923308
  	bool "Workaround for llock/scond livelock"
  	default n
  	depends on ISA_ARCV2 && SMP && ARC_HAS_LLSC
  
  config ARC_HAS_SWAPE
  	bool "Insn: SWAPE (endian-swap)"
  	default y
  
  if ISA_ARCV2
  
  config ARC_HAS_LL64
  	bool "Insn: 64bit LDD/STD"
  	help
  	  Enable gcc to generate 64-bit load/store instructions
  	  ISA mandates even/odd registers to allow encoding of two
  	  dest operands with 2 possible source operands.
  	default y
  
  config ARC_HAS_DIV_REM
  	bool "Insn: div, divu, rem, remu"
  	default y
  
  config ARC_HAS_RTC
  	bool "Local 64-bit r/o cycle counter"
  	default n
  	depends on !SMP
  
  config ARC_HAS_GRTC
  	bool "SMP synchronized 64-bit cycle counter"
  	default y
  	depends on SMP
  
  config ARC_NUMBER_OF_INTERRUPTS
  	int "Number of interrupts"
  	range 8 240
  	default 32
  	help
  	  This defines the number of interrupts on the ARCv2HS core.
  	  It affects the size of vector table.
  	  The initial 8 IRQs are fixed (Timer, ICI etc) and although configurable
  	  in hardware, it keep things simple for Linux to assume they are always
  	  present.
  
  endif	# ISA_ARCV2
  
  endmenu   # "ARC CPU Configuration"
  
  config LINUX_LINK_BASE
  	hex "Linux Link Address"
  	default "0x80000000"
  	help
  	  ARC700 divides the 32 bit phy address space into two equal halves
  	  -Lower 2G (0 - 0x7FFF_FFFF ) is user virtual, translated by MMU
  	  -Upper 2G (0x8000_0000 onwards) is untranslated, for kernel
  	  Typically Linux kernel is linked at the start of untransalted addr,
  	  hence the default value of 0x8zs.
  	  However some customers have peripherals mapped at this addr, so
  	  Linux needs to be scooted a bit.
  	  If you don't know what the above means, leave this setting alone.
  	  This needs to match memory start address specified in Device Tree
  
  config HIGHMEM
  	bool "High Memory Support"
  	help
  	  With ARC 2G:2G address split, only upper 2G is directly addressable by
  	  kernel. Enable this to potentially allow access to rest of 2G and PAE
  	  in future
  
  config ARC_HAS_PAE40
  	bool "Support for the 40-bit Physical Address Extension"
  	default n
  	depends on ISA_ARCV2
  	select HIGHMEM
  	help
  	  Enable access to physical memory beyond 4G, only supported on
  	  ARC cores with 40 bit Physical Addressing support
  
  config ARCH_PHYS_ADDR_T_64BIT
  	def_bool ARC_HAS_PAE40
  
  config ARCH_DMA_ADDR_T_64BIT
  	bool
  
  config ARC_CURR_IN_REG
  	bool "Dedicate Register r25 for current_task pointer"
  	default y
  	help
  	  This reserved Register R25 to point to Current Task in
  	  kernel mode. This saves memory access for each such access
  
  
  config ARC_EMUL_UNALIGNED
  	bool "Emulate unaligned memory access (userspace only)"
  	default N
  	select SYSCTL_ARCH_UNALIGN_NO_WARN
  	select SYSCTL_ARCH_UNALIGN_ALLOW
  	depends on ISA_ARCOMPACT
  	help
  	  This enables misaligned 16 & 32 bit memory access from user space.
  	  Use ONLY-IF-ABS-NECESSARY as it will be very slow and also can hide
  	  potential bugs in code
  
  config HZ
  	int "Timer Frequency"
  	default 100
  
  config ARC_METAWARE_HLINK
  	bool "Support for Metaware debugger assisted Host access"
  	default n
  	help
  	  This options allows a Linux userland apps to directly access
  	  host file system (open/creat/read/write etc) with help from
  	  Metaware Debugger. This can come in handy for Linux-host communication
  	  when there is no real usable peripheral such as EMAC.
  
  menuconfig ARC_DBG
  	bool "ARC debugging"
  	default y
  
  if ARC_DBG
  
  config ARC_DW2_UNWIND
  	bool "Enable DWARF specific kernel stack unwind"
  	default y
  	select KALLSYMS
  	help
  	  Compiles the kernel with DWARF unwind information and can be used
  	  to get stack backtraces.
  
  	  If you say Y here the resulting kernel image will be slightly larger
  	  but not slower, and it will give very useful debugging information.
  	  If you don't debug the kernel, you can say N, but we may not be able
  	  to solve problems without frame unwind information
  
  config ARC_DBG_TLB_PARANOIA
  	bool "Paranoia Checks in Low Level TLB Handlers"
  	default n
  
  config ARC_DBG_TLB_MISS_COUNT
  	bool "Profile TLB Misses"
  	default n
  	select DEBUG_FS
  	help
  	  Counts number of I and D TLB Misses and exports them via Debugfs
  	  The counters can be cleared via Debugfs as well
  
  if SMP
  
  config ARC_IPI_DBG
  	bool "Debug Inter Core interrupts"
  	default n
  
  endif
  
  endif
  
  config ARC_UBOOT_SUPPORT
  	bool "Support uboot arg Handling"
  	default n
  	help
  	  ARC Linux by default checks for uboot provided args as pointers to
  	  external cmdline or DTB. This however breaks in absence of uboot,
  	  when booting from Metaware debugger directly, as the registers are
  	  not zeroed out on reset by mdb and/or ARCv2 based cores. The bogus
  	  registers look like uboot args to kernel which then chokes.
  	  So only enable the uboot arg checking/processing if users are sure
  	  of uboot being in play.
  
  config ARC_BUILTIN_DTB_NAME
  	string "Built in DTB"
  	help
  	  Set the name of the DTB to embed in the vmlinux binary
  	  Leaving it blank selects the minimal "skeleton" dtb
  
  source "kernel/Kconfig.preempt"
  
  menu "Executable file formats"
  source "fs/Kconfig.binfmt"
  endmenu
  
  endmenu	 # "ARC Architecture Configuration"
  
  source "mm/Kconfig"
  source "net/Kconfig"
  source "drivers/Kconfig"
  source "fs/Kconfig"
  source "arch/arc/Kconfig.debug"
  source "security/Kconfig"
  source "crypto/Kconfig"
  source "lib/Kconfig"
  source "kernel/power/Kconfig"