arch/arc/Kconfig - kernel/skids - Git at Google

 #
 # For a description of the syntax of this configuration file,
 # see Documentation/kbuild/kconfig-language.txt.
 #
 #   vineetg: Oct 4th 2007 : Added Config Options for 800/SMP
 #

 mainmenu "Linux Kernel Configuration"

 # CONFIG common to all ARC cores (700+800) under this
 #    config option instead of existing ARCH_ARC700
 # Need corresponding change in include/asm-arc/linkage.h

 config ARCH_ARC
     bool
     default y
     select HAVE_OPROFILE
     select NO_IOPORT
     select HAVE_KPROBES
     select HAVE_KRETPROBES

 # vineetg: Mar 31st 2010
 # hack: to enable oprofile w/o TRACE_IRQFLAGS
 # Normally this is selected automatically by build system
 # But is dependent on IRQTRACING when don't have yet.
 # So for now we force it: When IRQTRACING implemented, take it off
     select TRACING_SUPPORT


 config RWSEM_GENERIC_SPINLOCK
         def_bool y

 config UID16
         bool
         default y

 # This definition is temporarily lying here

 config SPLIT_PTLOCK_CPUS
         int
         default 4096


 config FLATMEM
         bool
         default y

 # Reminder: We need to restructure the menuconfig
 #            and get lots of options in.

 config LOG_BUF_SHIFT
         int
         default 14

 # Sameer: Hardcoding this variable as y for a while
 #         This is the variable to be used to to switch
 #         between linux and uclinux

 config MMU
         bool
         default y

 config NO_IOPORT
 	bool
 	default y

 config GENERIC_CALIBRATE_DELAY
         bool
         default y

 config GENERIC_TIME
         bool
         default y

 config GENERIC_GPIO
         bool
 	default y

 config GENERIC_FIND_FIRST_BIT
         bool
         default y

 config GENERIC_FIND_NEXT_BIT
         bool
         default y

 config GENERIC_HWEIGHT
         bool
         default y

 config BINFMT_ELF
         bool
         default y

 config STACKTRACE_SUPPORT
 	def_bool y
     select STACKTRACE

 config SCHED_OMIT_FRAME_POINTER
         bool
         default y

 config HAVE_LATENCYTOP_SUPPORT
 	bool
 	default y

 # CONFIG common to all ARC cores (700+800) under this
 #    config option instead of existing ARCH_ARC700
 # Need corresponding change in include/asm-arc/linkage.h
 config ARCH_ARC
     bool
     default y
     select HAVE_OPROFILE
     select NO_IOPORT

 # end of temporary definitions section

 config VMALLOC_SIZE
         int
         default "256" #"VMALLOC_SIZE(in MB)"

 # To support saving core dump in case of LHost, MuC or AuC crash
 config QTN_SOC_CORE_DUMP
 	bool
 	default y
 	select ZLIB_DEFLATE

 source "init/Kconfig"

 source "kernel/Kconfig.freezer"

 menu "Processor Type and features"

 choice
         prompt "ARC Processor"
         default ARCH_ARC700

 config ARCH_ARC700
         bool "ARC700"
         help
           Support for ARC700 core processors.

 config ARCH_ARC800
         bool "ARC800"
         help
           Support for ARC800 core processors.

 endchoice

 config SMP
         bool "Symmetric Multi-Processing (Incomplete)"
     default y
     depends on ARCH_ARC800
         help
           This enables support for systems with more than one CPU. If you have
           a system with only one CPU, like most personal computers, say N. If
           you have a system with more than one CPU, say Y.

           If you say N here, the kernel will run on single and multiprocessor
           machines, but will use only one CPU of a multiprocessor machine. If
           you say Y here, the kernel will run on many, but not all, single
           processor machines. On a single processor machine, the kernel will
           run faster if you say N here.

           See also the <file:Documentation/smp.txt>,
           <file:Documentation/i386/IO-APIC.txt>,
           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
           <http://www.linuxdoc.org/docs.html#howto>.

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

 config NR_CPUS
         int "Maximum number of CPUs (2-32)"
         range 2 32
         depends on SMP
         default "2"


 menu "ARC CPU Core Configuration"

 menuconfig ARC700_CACHE
     bool "Enable Cache Support"
     default y

 config ARC700_USE_ICACHE
         bool "Use Instruction Cache"
         default y
         depends on ARC700_CACHE

 config ARC700_USE_DCACHE
         bool "Use Data Cache"
         default y
         depends on ARC700_CACHE

 config ARC700_CACHE_PAGES
         bool "Per Page Cache Control"
 #        default y if ARC700_USE_ICACHE || ARC700_USE_DCACHE
         depends on ARC700_CACHE && (ARC700_USE_ICACHE || ARC700_USE_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 ARCH_ARC_ICCM
 		bool "Use ICCM"
         help
 		Single Cycle RAMS to store Fast Path Code
         default n

 config ARCH_ARC_DCCM
 		bool "Use DCCM"
         help
         Single Cycle RAMS to store Fast Path Data
         default n

 choice
         prompt "ARC700 MMU Version"
         default ARC_MMU_V3 if ARC700_V_4_10
         default ARC_MMU_V2 if !ARC700_V_4_10

 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"
 # enable this later on, otherwise we are bound to use news insn with v3
 #        depends on ARC700_V_4_10
         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)

 endchoice


 config ARC_MMU_SASID
         bool "shared TLB entries for library code segments"
         default y
         depends on ARC_MMU_V3
         select MMAP_CODE_CMN_VADDR
         help
         Enable MMU support for code TLB entries, sharable across processes.
         So instead of a per-process TLB entry per page of library code, a
         single TLB entry is used across all proceeses, mapping this lib.
         This is difft from glabal TLB entries as it is subscription based
         This will reduce pressure on TLB immensely.

 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

 config ARC_PAGE_SIZE_4K
         bool "4KB"
         depends on ARC_MMU_V3

 endchoice

 config ARCH_ARC_LV2_INTR
         bool "Enable two levels of Interrupts high(2)low(1)"
         default n
         select TIMER_LV2

 config ARCH_ARC_FPU
         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.

 menuconfig ARC700_V_4_10
         bool "Build kernel for ARC700 v 4.10 - Summer 2011"
         default n
         help
         This rel of ARC700 provides a bunch of new feature:
         -MMU-v3: Variable Pg Sz, bigger J-TLB, Shared Address Spaces
         -Caches: New Prog Model, Region Flush
         -Insns: endian swap, load-locked/store-conditional, time-stamp-ctr

 config ARC_HAS_LLSC
         bool "llock/scond insns for faster atomic ops"
         default y
         depends on ARC700_V_4_10

 config ARC_HAS_SWAPE
         bool "single cycle endian-swap insn"
         default y
         depends on ARC700_V_4_10

 config ARC_HAS_RTSC
         bool "64-bit read-only time-stamp counter"
         default y
         depends on ARC700_V_4_10

 endmenu   #CPU Core config

 menu "Board 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.

 config SDRAM_SIZE
         hex "SD RAM Size"
         default "0x10000000"
         help
             Implies the amount of SDRAM/DRAM Linux is going to claim/own.
             The actual memory itself could be larger than this number. But for
             all software purposes, this is the amt of memory.

 endmenu   #Board config

 menu "ARC Pheripheral Support"

 config ARC_AHB_PCI_BRIDGE
     bool "Host PCI Bridge on AA4 Board"
     default n
     depends on PCI
     help
     To Enable a PCI device to work on AA4 Ref Board a AHB to PCI Host Bridge
     is needed.

 config NO_DMA
     bool
     default n


 config ARC_IDE
 	tristate "Enable ARC IDE"
     select HAVE_IDE
     select IDE
     select BLK_DEV_IDE
     select BLK_DEV_IDEDISK
 	default y

 config ARC_BLK_DEV_IDEDMA
         bool "ARC IDE DMA support"
         default y
         select BLK_DEV_IDEDMA
         depends on ARC_IDE

 config ARC_SERIAL
         bool "ARC UART driver support"
         select SERIAL_CORE
         default y

 config ARC_SERIAL_NR_PORTS
     int 'Number of ports'
     range 1 3
     default 1
     depends on ARC_SERIAL

 config ARC_SERIAL_BAUD
         int "Baud rate"
         default "115200"
         depends on ARC_SERIAL

 config ARC_SERIAL_CONSOLE
         bool
         select SERIAL_CORE_CONSOLE
         depends on !ARC_PGU_CONSOLE && ARC_SERIAL
         default y

 config SERIAL_LV2
         bool "Configure serial interrupt on level 2"
         default n
         depends on ARC_SERIAL && TIMER_LV2

 config TIMER_LV2
         bool "Configure Timer0 interrupt on level 2"
         default n
         depends on ARCH_ARC_LV2_INTR

 config ARC_PS2
         bool "ARC PS/2 support"
         default n
 	depends on SERIO
         help
         ARC FPGA Peripherals PS/2 support. Driver currently works only
         on AA4 board.

 config ARC_PS2_DEBUG
         bool "ARC PS/2 driver debugging"
         default n
 	depends on ARC_PS2
         help
 	Turn on statistic collection and various debug messages to
 	simplify debugging.

 config ARCTANGENT_EMAC
         tristate "ARCTangent EMAC support"
         select NET
         select INET
         select NETDEVICES
         select NET_ETHERNET
         default n

 config EMAC_LV2
         bool "Configure EMAC interrupt on level 2"
         default n
         depends on ARCTANGENT_EMAC && TIMER_LV2

 config EMAC_NAPI
         bool "Use NAPI ?"
         default n
         depends on ARCTANGENT_EMAC

 config XILINX_TEMAC
         tristate "Use AA5 Xilinx TEMAC ?"
         default n
         select NET
         select INET
         select NETDEVICES
         select NET_ETHERNET

 config ISS_MAC
         tristate "Use xISS/ISS ENET simulation ?"
         default n
         select NET
         select IET
         select NETDEVICES
         select NET_ETHERNET

 config ARCPGU
         tristate "Use ARC Pixel Graphics Unit"
         select FB
         select FB_CFB_FILLRECT
         select FB_CFB_COPYAREA
         select FB_CFB_IMAGEBLIT

 config VFB_SIM
         bool "Use ISS/xISS framebuffer"
         select FB
         select FB_CFB_FILLRECT
         select FB_CFB_COPYAREA
         select FB_CFB_IMAGEBLIT
         select FB_SYS_FOPS
 config VFB_SIM_BASE
         hex "Base address of Frame Buffer in Pysical memory"
         default "0x88000000"
         depends on VFB_SIM

 config VFB_SIM_SIZE
         hex "Size of memory buffer"
         default "0x400000"
         depends on VFB_SIM

 config VFB_SIM_XRES
         int "X-Resolution"
         default "640"
         depends on VFB_SIM

 config VFB_SIM_YRES
         int "Y-Resolution"
         default "480"
         depends on VFB_SIM

 config VFB_SIM_BPP
         int "Bits per pixel"
         default "16"
         depends on VFB_SIM

 config FORCE_MAX_ZONEORDER
         int
         depends on ARCPGU || PGU_SIM
         default "13"

 config ARCPGU_YUVBUFS
     int 'Number of YUV Buffers'
     default 18
     depends on ARCPGU || PGU_SIM

 config ARCPGU_RGBBUFS
     int 'Number of RGB Buffers'
     default 2
     depends on ARCPGU || PGU_SIM

 config ARCPGU_DISPTYPE
     int 'Display selector (0 - VGA, 1 - QVGA)'
     default 0
     depends on ARCPGU || PGU_SIM

 config ARCPGU_XRES
     int 'Default YUV X resolution'
     default 640
     depends on ARCPGU || PGU_SIM

 config ARCPGU_YRES
     int 'Default YUV Y resolution'
     default 480
     depends on ARCPGU || PGU_SIM

 config ARCPGU_VCLK
     bool 'PLL-driven pixel clock'
     default 0
     depends on ARCPGU || PGU_SIM

 config ARC_PGU_CONSOLE
     bool 'Console on the ARC PGU'
     depends on ARCPGU || PGU_SIM
     select FRAMEBUFFER_CONSOLE
     select FONTS
     select FONT_8x8
     select FONT_8x16
     select LOGO
     select LOGO_LINUX_MONO
     select LOGO_LINUX_VGA16
     select LOGO_LINUX_CLUT224
     select BACKLIGHT_LCD_SUPPORT

 config ARCVSYNC
     bool
     depends on ARC_PGU_CONSOLE
     default y

 config SOUND_ARC_AC97
         tristate "Enable AC97 interface"
         select SOUND
         select SOUND_PRIME

 config ARC_7XX_GPIO
         bool "ARC 7XX GPIO support"
         select ARCH_REQUIRE_GPIOLIB
 	select GENERIC_GPIO
 	default y
         help
           Say Y here if you're going to use arc gpio.

 menu "Bus options (PCI etc.)"

 config PCI
 	bool "PCI support"
 	default n
 	help
 	  If you have PCI, say Y, otherwise N.

 source "drivers/pci/Kconfig"
 source "drivers/pci/hotplug/Kconfig"
 source "drivers/pcmcia/Kconfig"

 endmenu     # Bus options

 endmenu     # Peripherals


 config ARCH_ARC_CURR_IN_REG
         bool "Dedicate Register r25 for current_task pointer"
         default N
         help
           This reserved Register R25 to point to Current Task in
           kernel mode. This saves memory access for each such access

 config ARC_TLS_REG_EMUL
         bool "Emulate a TLS register using a dedicated user vaddr"
         default N
         help
             ARC ABI lacks defining a dedicated TLS register to hold
             pointer to TLS Data area.
             So we emulate the TLS register using a TLS Virtual addr

 config ARC_MISALIGNED_ACCESS
         bool "Support unaligned memory access"
         default N
         help
           This enables misaligned 16 & 32 bit memory access exception handler
           to recover from misaligned memory access in both user and kernel space.

 config ARCH_ARC_SPACE_RND
         bool "Address Space Randomisation (mmap/SP)"
         default N
         help
           This feature enables Address space randomisation for mmap and SP
           Note that it could lead to some performance degradation especially
           for shared libraries so use it only if needed

 config MMAP_CODE_CMN_VADDR
         bool "mmap shared lib code at same vaddr across proceses"
         default y
         select GENERIC_ALLOCATOR
         help
         This feature forces kernel to map a particular shared lib's code
         at same vaddr across processes using a dedicated
         mmap-shared-code-virtual-address-space. Any lib's code page frames
         are already shared using page-cache; same vaddr ensures a single
         v:p mapping, preventing virtual aliases in ARC VIPT I-Caches.
         This boosts performance because each alias occupies a cache-line
         of own hence needs to be fetched per instance as opposed to just
         once.
         It is _must_ for enabling hardware SASID feature, where a single
         shared TLB entry for shared code can be used across processes.

 config HZ
     int "Timer Frequency"
     default 100

 config GENERIC_CLOCKEVENTS
     bool "Generic clock events"
     default y

 config ARC_STACK_NONEXEC
     bool "Make stack non-executable"
     default n
     help
     By default the stack and heap areas of processes have execute permissions switched on.
     You may choose to disable execute on the default data permissions switching this option on
     see include/asm/page.h

 source "kernel/time/Kconfig"

 config ARCH_ARC_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

 config ARC_STACK_UNWIND
     bool "Enable DWARF specific kernel stack unwind"
     depends on ARC_DBG
     default y
     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_TLB_PARANOIA
     bool "Paranoia Checks in Low Level TLB Handlers"
     depends on ARC_DBG
     default n

 config ARC_DBG_EVENT_TIMELINE
     bool "Low level event capture"
     depends on ARC_DBG
     default n
     help
     Capture low level events: IRQ/Trap/Exception

 config ARC_TLB_PROFILE
     bool "Profile TLB Misses"
     default n
     select DEBUG_FS
     depends on ARC_DBG
     help
     Counts number of I and D TLB Misses and exports them via Debugfs
     The counters can be cleared via Debugfs as well

 config ARC_UBOOT_CMDLINE
     bool "Support U-boot kernel command line passing"
     default n
     help
     If you are using U-boot (www.denx.de) and wish to pass the kernel
     command line from the U-boot environment to the Linux kernel then
     switch this option on.
     U-boot will pass the command_line variable at the beginning of the
     .bss section.  The kernel copies this variable into the correct place
     during it's boot.

     If you are unsure "N" is a good choice.

 config ARC_PROFILING
     bool "Support ARC Hardware Profiling"
     default n
     help
     If you have the ARC hardware support built into your hardware and
     wish to use the "task mode" profiling support then switch this on.
     This will enable an architecture specific context switch hook that
     will enable / disable the hardware counting while not running the specific
     process you are interested in.

     If you are unsure "N" is a good choice.

 source "kernel/Kconfig.preempt"

 endmenu

 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 "drivers/ruby/Kconfig"

 source "drivers/topaz/Kconfig"
	#
	# For a description of the syntax of this configuration file,
	# see Documentation/kbuild/kconfig-language.txt.
	#
	# vineetg: Oct 4th 2007 : Added Config Options for 800/SMP
	#

	mainmenu "Linux Kernel Configuration"

	# CONFIG common to all ARC cores (700+800) under this
	# config option instead of existing ARCH_ARC700
	# Need corresponding change in include/asm-arc/linkage.h

	config ARCH_ARC
	bool
	default y
	select HAVE_OPROFILE
	select NO_IOPORT
	select HAVE_KPROBES
	select HAVE_KRETPROBES

	# vineetg: Mar 31st 2010
	# hack: to enable oprofile w/o TRACE_IRQFLAGS
	# Normally this is selected automatically by build system
	# But is dependent on IRQTRACING when don't have yet.
	# So for now we force it: When IRQTRACING implemented, take it off
	select TRACING_SUPPORT


	config RWSEM_GENERIC_SPINLOCK
	def_bool y

	config UID16
	bool
	default y

	# This definition is temporarily lying here

	config SPLIT_PTLOCK_CPUS
	int
	default 4096


	config FLATMEM
	bool
	default y

	# Reminder: We need to restructure the menuconfig
	# and get lots of options in.

	config LOG_BUF_SHIFT
	int
	default 14

	# Sameer: Hardcoding this variable as y for a while
	# This is the variable to be used to to switch
	# between linux and uclinux

	config MMU
	bool
	default y

	config NO_IOPORT
	bool
	default y

	config GENERIC_CALIBRATE_DELAY
	bool
	default y

	config GENERIC_TIME
	bool
	default y

	config GENERIC_GPIO
	bool
	default y

	config GENERIC_FIND_FIRST_BIT
	bool
	default y

	config GENERIC_FIND_NEXT_BIT
	bool
	default y

	config GENERIC_HWEIGHT
	bool
	default y

	config BINFMT_ELF
	bool
	default y

	config STACKTRACE_SUPPORT
	def_bool y
	select STACKTRACE

	config SCHED_OMIT_FRAME_POINTER
	bool
	default y

	config HAVE_LATENCYTOP_SUPPORT
	bool
	default y

	# CONFIG common to all ARC cores (700+800) under this
	# config option instead of existing ARCH_ARC700
	# Need corresponding change in include/asm-arc/linkage.h
	config ARCH_ARC
	bool
	default y
	select HAVE_OPROFILE
	select NO_IOPORT

	# end of temporary definitions section

	config VMALLOC_SIZE
	int
	default "256" #"VMALLOC_SIZE(in MB)"

	# To support saving core dump in case of LHost, MuC or AuC crash
	config QTN_SOC_CORE_DUMP
	bool
	default y
	select ZLIB_DEFLATE

	source "init/Kconfig"

	source "kernel/Kconfig.freezer"

	menu "Processor Type and features"

	choice
	prompt "ARC Processor"
	default ARCH_ARC700

	config ARCH_ARC700
	bool "ARC700"
	help
	Support for ARC700 core processors.

	config ARCH_ARC800
	bool "ARC800"
	help
	Support for ARC800 core processors.

	endchoice

	config SMP
	bool "Symmetric Multi-Processing (Incomplete)"
	default y
	depends on ARCH_ARC800
	help
	This enables support for systems with more than one CPU. If you have
	a system with only one CPU, like most personal computers, say N. If
	you have a system with more than one CPU, say Y.

	If you say N here, the kernel will run on single and multiprocessor
	machines, but will use only one CPU of a multiprocessor machine. If
	you say Y here, the kernel will run on many, but not all, single
	processor machines. On a single processor machine, the kernel will
	run faster if you say N here.

	See also the <file:Documentation/smp.txt>,
	<file:Documentation/i386/IO-APIC.txt>,
	<file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
	<http://www.linuxdoc.org/docs.html#howto>.

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

	config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "2"


	menu "ARC CPU Core Configuration"

	menuconfig ARC700_CACHE
	bool "Enable Cache Support"
	default y

	config ARC700_USE_ICACHE
	bool "Use Instruction Cache"
	default y
	depends on ARC700_CACHE

	config ARC700_USE_DCACHE
	bool "Use Data Cache"
	default y
	depends on ARC700_CACHE

	config ARC700_CACHE_PAGES
	bool "Per Page Cache Control"
	# default y if ARC700_USE_ICACHE \|\| ARC700_USE_DCACHE
	depends on ARC700_CACHE && (ARC700_USE_ICACHE \|\| ARC700_USE_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 ARCH_ARC_ICCM
	bool "Use ICCM"
	help
	Single Cycle RAMS to store Fast Path Code
	default n

	config ARCH_ARC_DCCM
	bool "Use DCCM"
	help
	Single Cycle RAMS to store Fast Path Data
	default n

	choice
	prompt "ARC700 MMU Version"
	default ARC_MMU_V3 if ARC700_V_4_10
	default ARC_MMU_V2 if !ARC700_V_4_10

	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"
	# enable this later on, otherwise we are bound to use news insn with v3
	# depends on ARC700_V_4_10
	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)

	endchoice


	config ARC_MMU_SASID
	bool "shared TLB entries for library code segments"
	default y
	depends on ARC_MMU_V3
	select MMAP_CODE_CMN_VADDR
	help
	Enable MMU support for code TLB entries, sharable across processes.
	So instead of a per-process TLB entry per page of library code, a
	single TLB entry is used across all proceeses, mapping this lib.
	This is difft from glabal TLB entries as it is subscription based
	This will reduce pressure on TLB immensely.

	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

	config ARC_PAGE_SIZE_4K
	bool "4KB"
	depends on ARC_MMU_V3

	endchoice

	config ARCH_ARC_LV2_INTR
	bool "Enable two levels of Interrupts high(2)low(1)"
	default n
	select TIMER_LV2

	config ARCH_ARC_FPU
	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.

	menuconfig ARC700_V_4_10
	bool "Build kernel for ARC700 v 4.10 - Summer 2011"
	default n
	help
	This rel of ARC700 provides a bunch of new feature:
	-MMU-v3: Variable Pg Sz, bigger J-TLB, Shared Address Spaces
	-Caches: New Prog Model, Region Flush
	-Insns: endian swap, load-locked/store-conditional, time-stamp-ctr

	config ARC_HAS_LLSC
	bool "llock/scond insns for faster atomic ops"
	default y
	depends on ARC700_V_4_10

	config ARC_HAS_SWAPE
	bool "single cycle endian-swap insn"
	default y
	depends on ARC700_V_4_10

	config ARC_HAS_RTSC
	bool "64-bit read-only time-stamp counter"
	default y
	depends on ARC700_V_4_10

	endmenu #CPU Core config

	menu "Board 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.

	config SDRAM_SIZE
	hex "SD RAM Size"
	default "0x10000000"
	help
	Implies the amount of SDRAM/DRAM Linux is going to claim/own.
	The actual memory itself could be larger than this number. But for
	all software purposes, this is the amt of memory.

	endmenu #Board config

	menu "ARC Pheripheral Support"

	config ARC_AHB_PCI_BRIDGE
	bool "Host PCI Bridge on AA4 Board"
	default n
	depends on PCI
	help
	To Enable a PCI device to work on AA4 Ref Board a AHB to PCI Host Bridge
	is needed.

	config NO_DMA
	bool
	default n


	config ARC_IDE
	tristate "Enable ARC IDE"
	select HAVE_IDE
	select IDE
	select BLK_DEV_IDE
	select BLK_DEV_IDEDISK
	default y

	config ARC_BLK_DEV_IDEDMA
	bool "ARC IDE DMA support"
	default y
	select BLK_DEV_IDEDMA
	depends on ARC_IDE

	config ARC_SERIAL
	bool "ARC UART driver support"
	select SERIAL_CORE
	default y

	config ARC_SERIAL_NR_PORTS
	int 'Number of ports'
	range 1 3
	default 1
	depends on ARC_SERIAL

	config ARC_SERIAL_BAUD
	int "Baud rate"
	default "115200"
	depends on ARC_SERIAL

	config ARC_SERIAL_CONSOLE
	bool
	select SERIAL_CORE_CONSOLE
	depends on !ARC_PGU_CONSOLE && ARC_SERIAL
	default y

	config SERIAL_LV2
	bool "Configure serial interrupt on level 2"
	default n
	depends on ARC_SERIAL && TIMER_LV2

	config TIMER_LV2
	bool "Configure Timer0 interrupt on level 2"
	default n
	depends on ARCH_ARC_LV2_INTR

	config ARC_PS2
	bool "ARC PS/2 support"
	default n
	depends on SERIO
	help
	ARC FPGA Peripherals PS/2 support. Driver currently works only
	on AA4 board.

	config ARC_PS2_DEBUG
	bool "ARC PS/2 driver debugging"
	default n
	depends on ARC_PS2
	help
	Turn on statistic collection and various debug messages to
	simplify debugging.

	config ARCTANGENT_EMAC
	tristate "ARCTangent EMAC support"
	select NET
	select INET
	select NETDEVICES
	select NET_ETHERNET
	default n

	config EMAC_LV2
	bool "Configure EMAC interrupt on level 2"
	default n
	depends on ARCTANGENT_EMAC && TIMER_LV2

	config EMAC_NAPI
	bool "Use NAPI ?"
	default n
	depends on ARCTANGENT_EMAC

	config XILINX_TEMAC
	tristate "Use AA5 Xilinx TEMAC ?"
	default n
	select NET
	select INET
	select NETDEVICES
	select NET_ETHERNET

	config ISS_MAC
	tristate "Use xISS/ISS ENET simulation ?"
	default n
	select NET
	select IET
	select NETDEVICES
	select NET_ETHERNET

	config ARCPGU
	tristate "Use ARC Pixel Graphics Unit"
	select FB
	select FB_CFB_FILLRECT
	select FB_CFB_COPYAREA
	select FB_CFB_IMAGEBLIT

	config VFB_SIM
	bool "Use ISS/xISS framebuffer"
	select FB
	select FB_CFB_FILLRECT
	select FB_CFB_COPYAREA
	select FB_CFB_IMAGEBLIT
	select FB_SYS_FOPS
	config VFB_SIM_BASE
	hex "Base address of Frame Buffer in Pysical memory"
	default "0x88000000"
	depends on VFB_SIM

	config VFB_SIM_SIZE
	hex "Size of memory buffer"
	default "0x400000"
	depends on VFB_SIM

	config VFB_SIM_XRES
	int "X-Resolution"
	default "640"
	depends on VFB_SIM

	config VFB_SIM_YRES
	int "Y-Resolution"
	default "480"
	depends on VFB_SIM

	config VFB_SIM_BPP
	int "Bits per pixel"
	default "16"
	depends on VFB_SIM

	config FORCE_MAX_ZONEORDER
	int
	depends on ARCPGU \|\| PGU_SIM
	default "13"

	config ARCPGU_YUVBUFS
	int 'Number of YUV Buffers'
	default 18
	depends on ARCPGU \|\| PGU_SIM

	config ARCPGU_RGBBUFS
	int 'Number of RGB Buffers'
	default 2
	depends on ARCPGU \|\| PGU_SIM

	config ARCPGU_DISPTYPE
	int 'Display selector (0 - VGA, 1 - QVGA)'
	default 0
	depends on ARCPGU \|\| PGU_SIM

	config ARCPGU_XRES
	int 'Default YUV X resolution'
	default 640
	depends on ARCPGU \|\| PGU_SIM

	config ARCPGU_YRES
	int 'Default YUV Y resolution'
	default 480
	depends on ARCPGU \|\| PGU_SIM

	config ARCPGU_VCLK
	bool 'PLL-driven pixel clock'
	default 0
	depends on ARCPGU \|\| PGU_SIM

	config ARC_PGU_CONSOLE
	bool 'Console on the ARC PGU'
	depends on ARCPGU \|\| PGU_SIM
	select FRAMEBUFFER_CONSOLE
	select FONTS
	select FONT_8x8
	select FONT_8x16
	select LOGO
	select LOGO_LINUX_MONO
	select LOGO_LINUX_VGA16
	select LOGO_LINUX_CLUT224
	select BACKLIGHT_LCD_SUPPORT

	config ARCVSYNC
	bool
	depends on ARC_PGU_CONSOLE
	default y

	config SOUND_ARC_AC97
	tristate "Enable AC97 interface"
	select SOUND
	select SOUND_PRIME

	config ARC_7XX_GPIO
	bool "ARC 7XX GPIO support"
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_GPIO
	default y
	help
	Say Y here if you're going to use arc gpio.

	menu "Bus options (PCI etc.)"

	config PCI
	bool "PCI support"
	default n
	help
	If you have PCI, say Y, otherwise N.

	source "drivers/pci/Kconfig"
	source "drivers/pci/hotplug/Kconfig"
	source "drivers/pcmcia/Kconfig"

	endmenu # Bus options

	endmenu # Peripherals


	config ARCH_ARC_CURR_IN_REG
	bool "Dedicate Register r25 for current_task pointer"
	default N
	help
	This reserved Register R25 to point to Current Task in
	kernel mode. This saves memory access for each such access

	config ARC_TLS_REG_EMUL
	bool "Emulate a TLS register using a dedicated user vaddr"
	default N
	help
	ARC ABI lacks defining a dedicated TLS register to hold
	pointer to TLS Data area.
	So we emulate the TLS register using a TLS Virtual addr

	config ARC_MISALIGNED_ACCESS
	bool "Support unaligned memory access"
	default N
	help
	This enables misaligned 16 & 32 bit memory access exception handler
	to recover from misaligned memory access in both user and kernel space.

	config ARCH_ARC_SPACE_RND
	bool "Address Space Randomisation (mmap/SP)"
	default N
	help
	This feature enables Address space randomisation for mmap and SP
	Note that it could lead to some performance degradation especially
	for shared libraries so use it only if needed

	config MMAP_CODE_CMN_VADDR
	bool "mmap shared lib code at same vaddr across proceses"
	default y
	select GENERIC_ALLOCATOR
	help
	This feature forces kernel to map a particular shared lib's code
	at same vaddr across processes using a dedicated
	mmap-shared-code-virtual-address-space. Any lib's code page frames
	are already shared using page-cache; same vaddr ensures a single
	v:p mapping, preventing virtual aliases in ARC VIPT I-Caches.
	This boosts performance because each alias occupies a cache-line
	of own hence needs to be fetched per instance as opposed to just
	once.
	It is _must_ for enabling hardware SASID feature, where a single
	shared TLB entry for shared code can be used across processes.

	config HZ
	int "Timer Frequency"
	default 100

	config GENERIC_CLOCKEVENTS
	bool "Generic clock events"
	default y

	config ARC_STACK_NONEXEC
	bool "Make stack non-executable"
	default n
	help
	By default the stack and heap areas of processes have execute permissions switched on.
	You may choose to disable execute on the default data permissions switching this option on
	see include/asm/page.h

	source "kernel/time/Kconfig"

	config ARCH_ARC_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

	config ARC_STACK_UNWIND
	bool "Enable DWARF specific kernel stack unwind"
	depends on ARC_DBG
	default y
	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_TLB_PARANOIA
	bool "Paranoia Checks in Low Level TLB Handlers"
	depends on ARC_DBG
	default n

	config ARC_DBG_EVENT_TIMELINE
	bool "Low level event capture"
	depends on ARC_DBG
	default n
	help
	Capture low level events: IRQ/Trap/Exception

	config ARC_TLB_PROFILE
	bool "Profile TLB Misses"
	default n
	select DEBUG_FS
	depends on ARC_DBG
	help
	Counts number of I and D TLB Misses and exports them via Debugfs
	The counters can be cleared via Debugfs as well

	config ARC_UBOOT_CMDLINE
	bool "Support U-boot kernel command line passing"
	default n
	help
	If you are using U-boot (www.denx.de) and wish to pass the kernel
	command line from the U-boot environment to the Linux kernel then
	switch this option on.
	U-boot will pass the command_line variable at the beginning of the
	.bss section. The kernel copies this variable into the correct place
	during it's boot.

	If you are unsure "N" is a good choice.

	config ARC_PROFILING
	bool "Support ARC Hardware Profiling"
	default n
	help
	If you have the ARC hardware support built into your hardware and
	wish to use the "task mode" profiling support then switch this on.
	This will enable an architecture specific context switch hook that
	will enable / disable the hardware counting while not running the specific
	process you are interested in.

	If you are unsure "N" is a good choice.

	source "kernel/Kconfig.preempt"

	endmenu

	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 "drivers/ruby/Kconfig"

	source "drivers/topaz/Kconfig"