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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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![Viresh Kumar](/assets/img/avatar_default.png)
The "oprofile" user-space tools don't use the kernel OPROFILE support any more, and haven't in a long time. User-space has been converted to the perf interfaces. Remove the old oprofile's architecture specific support. Suggested-by: Christoph Hellwig <hch@infradead.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Robert Richter <rric@kernel.org> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: William Cohen <wcohen@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Thomas Gleixner <tglx@linutronix.de>
609 lines
15 KiB
Text
609 lines
15 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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#
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config ARC
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def_bool y
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select ARC_TIMERS
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select ARCH_HAS_DEBUG_VM_PGTABLE
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select ARCH_HAS_DMA_PREP_COHERENT
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select ARCH_HAS_PTE_SPECIAL
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select ARCH_HAS_SETUP_DMA_OPS
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select ARCH_HAS_SYNC_DMA_FOR_CPU
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select ARCH_HAS_SYNC_DMA_FOR_DEVICE
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select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
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select ARCH_32BIT_OFF_T
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select BUILDTIME_TABLE_SORT
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select CLONE_BACKWARDS
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select COMMON_CLK
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select DMA_DIRECT_REMAP
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select GENERIC_ATOMIC64 if !ISA_ARCV2 || !(ARC_HAS_LL64 && ARC_HAS_LLSC)
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select GENERIC_FIND_FIRST_BIT
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# for now, we don't need GENERIC_IRQ_PROBE, CONFIG_GENERIC_IRQ_CHIP
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select GENERIC_IRQ_SHOW
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select GENERIC_PCI_IOMAP
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select GENERIC_PENDING_IRQ if SMP
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select GENERIC_SCHED_CLOCK
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select GENERIC_SMP_IDLE_THREAD
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select HAVE_ARCH_KGDB
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select HAVE_ARCH_TRACEHOOK
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select HAVE_DEBUG_STACKOVERFLOW
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select HAVE_DEBUG_KMEMLEAK
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select HAVE_FUTEX_CMPXCHG if FUTEX
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select HAVE_IOREMAP_PROT
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select HAVE_KERNEL_GZIP
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select HAVE_KERNEL_LZMA
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select HAVE_KPROBES
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select HAVE_KRETPROBES
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select HAVE_MOD_ARCH_SPECIFIC
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select HAVE_PERF_EVENTS
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select HANDLE_DOMAIN_IRQ
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select IRQ_DOMAIN
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select MODULES_USE_ELF_RELA
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select OF
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select OF_EARLY_FLATTREE
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select PCI_SYSCALL if PCI
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select PERF_USE_VMALLOC if ARC_CACHE_VIPT_ALIASING
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select HAVE_ARCH_JUMP_LABEL if ISA_ARCV2 && !CPU_ENDIAN_BE32
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select SET_FS
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config ARCH_HAS_CACHE_LINE_SIZE
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def_bool y
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config TRACE_IRQFLAGS_SUPPORT
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def_bool y
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config LOCKDEP_SUPPORT
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def_bool y
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config SCHED_OMIT_FRAME_POINTER
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def_bool y
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config GENERIC_CSUM
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def_bool y
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config ARCH_DISCONTIGMEM_ENABLE
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def_bool n
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depends on BROKEN
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config ARCH_FLATMEM_ENABLE
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def_bool y
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config MMU
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def_bool y
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config NO_IOPORT_MAP
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def_bool y
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config GENERIC_CALIBRATE_DELAY
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def_bool y
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config GENERIC_HWEIGHT
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def_bool y
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config STACKTRACE_SUPPORT
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def_bool y
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select STACKTRACE
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config HAVE_ARCH_TRANSPARENT_HUGEPAGE
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def_bool y
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depends on ARC_MMU_V4
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menu "ARC Architecture Configuration"
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menu "ARC Platform/SoC/Board"
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source "arch/arc/plat-tb10x/Kconfig"
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source "arch/arc/plat-axs10x/Kconfig"
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source "arch/arc/plat-hsdk/Kconfig"
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endmenu
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choice
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prompt "ARC Instruction Set"
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default ISA_ARCV2
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config ISA_ARCOMPACT
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bool "ARCompact ISA"
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select CPU_NO_EFFICIENT_FFS
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help
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The original ARC ISA of ARC600/700 cores
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config ISA_ARCV2
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bool "ARC ISA v2"
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select ARC_TIMERS_64BIT
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help
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ISA for the Next Generation ARC-HS cores
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endchoice
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menu "ARC CPU Configuration"
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choice
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prompt "ARC Core"
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default ARC_CPU_770 if ISA_ARCOMPACT
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default ARC_CPU_HS if ISA_ARCV2
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if ISA_ARCOMPACT
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config ARC_CPU_750D
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bool "ARC750D"
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select ARC_CANT_LLSC
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help
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Support for ARC750 core
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config ARC_CPU_770
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bool "ARC770"
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select ARC_HAS_SWAPE
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help
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Support for ARC770 core introduced with Rel 4.10 (Summer 2011)
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This core has a bunch of cool new features:
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-MMU-v3: Variable Page Sz (4k, 8k, 16k), bigger J-TLB (128x4)
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Shared Address Spaces (for sharing TLB entries in MMU)
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-Caches: New Prog Model, Region Flush
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-Insns: endian swap, load-locked/store-conditional, time-stamp-ctr
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endif #ISA_ARCOMPACT
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config ARC_CPU_HS
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bool "ARC-HS"
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depends on ISA_ARCV2
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help
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Support for ARC HS38x Cores based on ARCv2 ISA
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The notable features are:
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- SMP configurations of up to 4 cores with coherency
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- Optional L2 Cache and IO-Coherency
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- Revised Interrupt Architecture (multiple priorites, reg banks,
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auto stack switch, auto regfile save/restore)
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- MMUv4 (PIPT dcache, Huge Pages)
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- Instructions for
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* 64bit load/store: LDD, STD
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* Hardware assisted divide/remainder: DIV, REM
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* Function prologue/epilogue: ENTER_S, LEAVE_S
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* IRQ enable/disable: CLRI, SETI
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* pop count: FFS, FLS
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* SETcc, BMSKN, XBFU...
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endchoice
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config ARC_TUNE_MCPU
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string "Override default -mcpu compiler flag"
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default ""
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help
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Override default -mcpu=xxx compiler flag (which is set depending on
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the ISA version) with the specified value.
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NOTE: If specified flag isn't supported by current compiler the
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ISA default value will be used as a fallback.
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config CPU_BIG_ENDIAN
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bool "Enable Big Endian Mode"
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help
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Build kernel for Big Endian Mode of ARC CPU
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config SMP
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bool "Symmetric Multi-Processing"
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select ARC_MCIP if ISA_ARCV2
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help
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This enables support for systems with more than one CPU.
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if SMP
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config NR_CPUS
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int "Maximum number of CPUs (2-4096)"
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range 2 4096
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default "4"
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config ARC_SMP_HALT_ON_RESET
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bool "Enable Halt-on-reset boot mode"
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help
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In SMP configuration cores can be configured as Halt-on-reset
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or they could all start at same time. For Halt-on-reset, non
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masters are parked until Master kicks them so they can start off
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at designated entry point. For other case, all jump to common
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entry point and spin wait for Master's signal.
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endif #SMP
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config ARC_MCIP
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bool "ARConnect Multicore IP (MCIP) Support "
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depends on ISA_ARCV2
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default y if SMP
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help
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This IP block enables SMP in ARC-HS38 cores.
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It provides for cross-core interrupts, multi-core debug
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hardware semaphores, shared memory,....
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menuconfig ARC_CACHE
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bool "Enable Cache Support"
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default y
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if ARC_CACHE
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config ARC_CACHE_LINE_SHIFT
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int "Cache Line Length (as power of 2)"
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range 5 7
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default "6"
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help
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Starting with ARC700 4.9, Cache line length is configurable,
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This option specifies "N", with Line-len = 2 power N
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So line lengths of 32, 64, 128 are specified by 5,6,7, respectively
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Linux only supports same line lengths for I and D caches.
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config ARC_HAS_ICACHE
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bool "Use Instruction Cache"
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default y
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config ARC_HAS_DCACHE
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bool "Use Data Cache"
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default y
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config ARC_CACHE_PAGES
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bool "Per Page Cache Control"
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default y
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depends on ARC_HAS_ICACHE || ARC_HAS_DCACHE
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help
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This can be used to over-ride the global I/D Cache Enable on a
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per-page basis (but only for pages accessed via MMU such as
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Kernel Virtual address or User Virtual Address)
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TLB entries have a per-page Cache Enable Bit.
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Note that Global I/D ENABLE + Per Page DISABLE works but corollary
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Global DISABLE + Per Page ENABLE won't work
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config ARC_CACHE_VIPT_ALIASING
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bool "Support VIPT Aliasing D$"
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depends on ARC_HAS_DCACHE && ISA_ARCOMPACT
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endif #ARC_CACHE
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config ARC_HAS_ICCM
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bool "Use ICCM"
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help
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Single Cycle RAMS to store Fast Path Code
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config ARC_ICCM_SZ
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int "ICCM Size in KB"
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default "64"
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depends on ARC_HAS_ICCM
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config ARC_HAS_DCCM
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bool "Use DCCM"
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help
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Single Cycle RAMS to store Fast Path Data
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config ARC_DCCM_SZ
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int "DCCM Size in KB"
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default "64"
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depends on ARC_HAS_DCCM
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config ARC_DCCM_BASE
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hex "DCCM map address"
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default "0xA0000000"
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depends on ARC_HAS_DCCM
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choice
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prompt "MMU Version"
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default ARC_MMU_V3 if ARC_CPU_770
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default ARC_MMU_V2 if ARC_CPU_750D
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default ARC_MMU_V4 if ARC_CPU_HS
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if ISA_ARCOMPACT
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config ARC_MMU_V1
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bool "MMU v1"
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help
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Orig ARC700 MMU
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config ARC_MMU_V2
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bool "MMU v2"
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help
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Fixed the deficiency of v1 - possible thrashing in memcpy scenario
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when 2 D-TLB and 1 I-TLB entries index into same 2way set.
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config ARC_MMU_V3
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bool "MMU v3"
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depends on ARC_CPU_770
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help
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Introduced with ARC700 4.10: New Features
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Variable Page size (1k-16k), var JTLB size 128 x (2 or 4)
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Shared Address Spaces (SASID)
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endif
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config ARC_MMU_V4
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bool "MMU v4"
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depends on ISA_ARCV2
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endchoice
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choice
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prompt "MMU Page Size"
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default ARC_PAGE_SIZE_8K
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config ARC_PAGE_SIZE_8K
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bool "8KB"
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help
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Choose between 8k vs 16k
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config ARC_PAGE_SIZE_16K
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bool "16KB"
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depends on ARC_MMU_V3 || ARC_MMU_V4
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config ARC_PAGE_SIZE_4K
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bool "4KB"
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depends on ARC_MMU_V3 || ARC_MMU_V4
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endchoice
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choice
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prompt "MMU Super Page Size"
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depends on ISA_ARCV2 && TRANSPARENT_HUGEPAGE
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default ARC_HUGEPAGE_2M
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config ARC_HUGEPAGE_2M
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bool "2MB"
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config ARC_HUGEPAGE_16M
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bool "16MB"
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endchoice
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config NODES_SHIFT
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int "Maximum NUMA Nodes (as a power of 2)"
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default "0" if !DISCONTIGMEM
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default "1" if DISCONTIGMEM
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depends on NEED_MULTIPLE_NODES
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help
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Accessing memory beyond 1GB (with or w/o PAE) requires 2 memory
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zones.
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config ARC_COMPACT_IRQ_LEVELS
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depends on ISA_ARCOMPACT
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bool "Setup Timer IRQ as high Priority"
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# if SMP, LV2 enabled ONLY if ARC implementation has LV2 re-entrancy
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depends on !SMP
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config ARC_FPU_SAVE_RESTORE
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bool "Enable FPU state persistence across context switch"
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help
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ARCompact FPU has internal registers to assist with Double precision
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Floating Point operations. There are control and stauts registers
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for floating point exceptions and rounding modes. These are
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preserved across task context switch when enabled.
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config ARC_CANT_LLSC
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def_bool n
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config ARC_HAS_LLSC
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bool "Insn: LLOCK/SCOND (efficient atomic ops)"
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default y
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depends on !ARC_CANT_LLSC
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config ARC_HAS_SWAPE
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bool "Insn: SWAPE (endian-swap)"
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default y
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if ISA_ARCV2
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config ARC_USE_UNALIGNED_MEM_ACCESS
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bool "Enable unaligned access in HW"
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default y
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select HAVE_EFFICIENT_UNALIGNED_ACCESS
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help
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The ARC HS architecture supports unaligned memory access
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which is disabled by default. Enable unaligned access in
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hardware and use software to use it
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config ARC_HAS_LL64
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bool "Insn: 64bit LDD/STD"
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help
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Enable gcc to generate 64-bit load/store instructions
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ISA mandates even/odd registers to allow encoding of two
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dest operands with 2 possible source operands.
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default y
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config ARC_HAS_DIV_REM
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bool "Insn: div, divu, rem, remu"
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default y
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config ARC_HAS_ACCL_REGS
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bool "Reg Pair ACCL:ACCH (FPU and/or MPY > 6 and/or DSP)"
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default y
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help
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Depending on the configuration, CPU can contain accumulator reg-pair
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(also referred to as r58:r59). These can also be used by gcc as GPR so
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kernel needs to save/restore per process
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config ARC_DSP_HANDLED
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def_bool n
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config ARC_DSP_SAVE_RESTORE_REGS
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def_bool n
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choice
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prompt "DSP support"
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default ARC_DSP_NONE
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help
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Depending on the configuration, CPU can contain DSP registers
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(ACC0_GLO, ACC0_GHI, DSP_BFLY0, DSP_CTRL, DSP_FFT_CTRL).
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Bellow is options describing how to handle these registers in
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interrupt entry / exit and in context switch.
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config ARC_DSP_NONE
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bool "No DSP extension presence in HW"
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help
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No DSP extension presence in HW
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config ARC_DSP_KERNEL
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bool "DSP extension in HW, no support for userspace"
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select ARC_HAS_ACCL_REGS
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select ARC_DSP_HANDLED
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help
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DSP extension presence in HW, no support for DSP-enabled userspace
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applications. We don't save / restore DSP registers and only do
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some minimal preparations so userspace won't be able to break kernel
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config ARC_DSP_USERSPACE
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bool "Support DSP for userspace apps"
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select ARC_HAS_ACCL_REGS
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select ARC_DSP_HANDLED
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select ARC_DSP_SAVE_RESTORE_REGS
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help
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DSP extension presence in HW, support save / restore DSP registers to
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run DSP-enabled userspace applications
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config ARC_DSP_AGU_USERSPACE
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bool "Support DSP with AGU for userspace apps"
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select ARC_HAS_ACCL_REGS
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select ARC_DSP_HANDLED
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select ARC_DSP_SAVE_RESTORE_REGS
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help
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DSP and AGU extensions presence in HW, support save / restore DSP
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and AGU registers to run DSP-enabled userspace applications
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endchoice
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config ARC_IRQ_NO_AUTOSAVE
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bool "Disable hardware autosave regfile on interrupts"
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default n
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help
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On HS cores, taken interrupt auto saves the regfile on stack.
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This is programmable and can be optionally disabled in which case
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software INTERRUPT_PROLOGUE/EPILGUE do the needed work
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config ARC_LPB_DISABLE
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bool "Disable loop buffer (LPB)"
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help
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On HS cores, loop buffer (LPB) is programmable in runtime and can
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be optionally disabled.
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endif # ISA_ARCV2
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endmenu # "ARC CPU Configuration"
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config LINUX_LINK_BASE
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hex "Kernel link address"
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default "0x80000000"
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help
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ARC700 divides the 32 bit phy address space into two equal halves
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-Lower 2G (0 - 0x7FFF_FFFF ) is user virtual, translated by MMU
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-Upper 2G (0x8000_0000 onwards) is untranslated, for kernel
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Typically Linux kernel is linked at the start of untransalted addr,
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hence the default value of 0x8zs.
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However some customers have peripherals mapped at this addr, so
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Linux needs to be scooted a bit.
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If you don't know what the above means, leave this setting alone.
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This needs to match memory start address specified in Device Tree
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config LINUX_RAM_BASE
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hex "RAM base address"
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default LINUX_LINK_BASE
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help
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By default Linux is linked at base of RAM. However in some special
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cases (such as HSDK), Linux can't be linked at start of DDR, hence
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this option.
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config HIGHMEM
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bool "High Memory Support"
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select HAVE_ARCH_PFN_VALID
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select KMAP_LOCAL
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help
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With ARC 2G:2G address split, only upper 2G is directly addressable by
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kernel. Enable this to potentially allow access to rest of 2G and PAE
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in future
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config ARC_HAS_PAE40
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bool "Support for the 40-bit Physical Address Extension"
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depends on ISA_ARCV2
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select HIGHMEM
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select PHYS_ADDR_T_64BIT
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help
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Enable access to physical memory beyond 4G, only supported on
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ARC cores with 40 bit Physical Addressing support
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config ARC_KVADDR_SIZE
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int "Kernel Virtual Address Space size (MB)"
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range 0 512
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default "256"
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|
help
|
|
The kernel address space is carved out of 256MB of translated address
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|
space for catering to vmalloc, modules, pkmap, fixmap. This however may
|
|
not suffice vmalloc requirements of a 4K CPU EZChip system. So allow
|
|
this to be stretched to 512 MB (by extending into the reserved
|
|
kernel-user gutter)
|
|
|
|
config ARC_CURR_IN_REG
|
|
bool "Dedicate Register r25 for current_task pointer"
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|
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)"
|
|
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"
|
|
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"
|
|
|
|
config ARC_DBG_JUMP_LABEL
|
|
bool "Paranoid checks in Static Keys (jump labels) code"
|
|
depends on JUMP_LABEL
|
|
default y if STATIC_KEYS_SELFTEST
|
|
help
|
|
Enable paranoid checks and self-test of both ARC-specific and generic
|
|
part of static keys (jump labels) related code.
|
|
endif
|
|
|
|
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
|
|
|
|
endmenu # "ARC Architecture Configuration"
|
|
|
|
config FORCE_MAX_ZONEORDER
|
|
int "Maximum zone order"
|
|
default "12" if ARC_HUGEPAGE_16M
|
|
default "11"
|
|
|
|
source "kernel/power/Kconfig"
|