| # |
| # 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)" |
| |
| 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" |
| |
