config ARC
def_bool y
- select ARCH_NO_VIRT_TO_BUS
select CLONE_BACKWARDS
# ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev
select DEVTMPFS if !INITRAMFS_SOURCE=""
select GENERIC_KERNEL_EXECVE
select GENERIC_KERNEL_THREAD
select GENERIC_PENDING_IRQ if SMP
- select GENERIC_SIGALTSTACK
select GENERIC_SMP_IDLE_THREAD
+ select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_HARDIRQS
+ 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
config SCHED_OMIT_FRAME_POINTER
def_bool y
config BINFMT_ELF
def_bool y
+config STACKTRACE_SUPPORT
+ def_bool y
+ select STACKTRACE
+
config HAVE_LATENCYTOP_SUPPORT
def_bool y
menu "ARC Architecture Configuration"
-choice
- prompt "ARC Platform"
- default ARC_PLAT_FPGA_LEGACY
-
-config ARC_PLAT_FPGA_LEGACY
- bool "\"Legacy\" ARC FPGA dev platform"
- help
- Support for ARC development platforms, provided by Synopsys.
- These are based on FPGA or ISS. e.g.
- - ARCAngel4
- - ML509
- - MetaWare ISS
+menu "ARC Platform/SoC/Board"
+source "arch/arc/plat-arcfpga/Kconfig"
#New platform adds here
-endchoice
+
+endmenu
menu "ARC CPU Configuration"
help
Build kernel for Big Endian Mode of ARC CPU
+# If a platform can't work with 0x8000_0000 based dma_addr_t
+config ARC_PLAT_NEEDS_CPU_TO_DMA
+ bool
+
+config SMP
+ bool "Symmetric Multi-Processing (Incomplete)"
+ default n
+ select USE_GENERIC_SMP_HELPERS
+ 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 SMP
+
+config ARC_HAS_COH_CACHES
+ def_bool n
+
+config ARC_HAS_COH_LLSC
+ def_bool n
+
+config ARC_HAS_COH_RTSC
+ def_bool n
+
+config ARC_HAS_REENTRANT_IRQ_LV2
+ def_bool n
+
+endif
+
+config NR_CPUS
+ int "Maximum number of CPUs (2-32)"
+ range 2 32
+ depends on SMP
+ default "2"
+
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
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
endchoice
+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
+
config ARC_FPU_SAVE_RESTORE
bool "Enable FPU state persistence across context switch"
default n
bool "Insn: RTSC (64-bit r/o cycle counter)"
default y
depends on ARC_CPU_REL_4_10
+ # if SMP, enable RTSC only if counter is coherent across cores
+ depends on !SMP || ARC_HAS_COH_RTSC
endmenu # "ARC CPU Configuration"
-menu "Platform Board Configuration"
-
-source "arch/arc/plat-arcfpga/Kconfig"
-
-#New platform adds here
-
config LINUX_LINK_BASE
hex "Linux Link Address"
default "0x80000000"
Linux needs to be scooted a bit.
If you don't know what the above means, leave this setting alone.
-endmenu # "Platform Board Configuration"
-
config ARC_CURR_IN_REG
bool "Dedicate Register r25 for current_task pointer"
default y
This reserved Register R25 to point to Current Task in
kernel mode. This saves memory access for each such access
+
+config ARC_MISALIGN_ACCESS
+ bool "Emulate unaligned memory access (userspace only)"
+ default N
+ select SYSCTL_ARCH_UNALIGN_NO_WARN
+ select SYSCTL_ARCH_UNALIGN_ALLOW
+ 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 ARC_STACK_NONEXEC
bool "Make stack non-executable"
default n
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
+config ARC_DW2_UNWIND
+ bool "Enable DWARF specific kernel stack unwind"
+ depends on ARC_DBG
+ 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"
depends on ARC_DBG
projects / linux-2.6-block.git / blobdiff