diff options
Diffstat (limited to 'arch/arc/Kconfig')
| -rw-r--r-- | arch/arc/Kconfig | 168 |
1 files changed, 93 insertions, 75 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 7124ab82dfa3..99d2845f3feb 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -6,6 +6,9 @@ config ARC def_bool y select ARC_TIMERS + select ARCH_HAS_CPU_CACHE_ALIASING + select ARCH_HAS_CACHE_LINE_SIZE + select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DMA_PREP_COHERENT select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_SETUP_DMA_OPS @@ -18,42 +21,37 @@ config ARC select COMMON_CLK select DMA_DIRECT_REMAP select GENERIC_ATOMIC64 if !ISA_ARCV2 || !(ARC_HAS_LL64 && ARC_HAS_LLSC) - select GENERIC_CLOCKEVENTS - select GENERIC_FIND_FIRST_BIT # for now, we don't need GENERIC_IRQ_PROBE, CONFIG_GENERIC_IRQ_CHIP select GENERIC_IRQ_SHOW select GENERIC_PCI_IOMAP select GENERIC_PENDING_IRQ if SMP select GENERIC_SCHED_CLOCK select GENERIC_SMP_IDLE_THREAD + select GENERIC_IOREMAP + select GENERIC_STRNCPY_FROM_USER if MMU + select GENERIC_STRNLEN_USER if MMU select HAVE_ARCH_KGDB select HAVE_ARCH_TRACEHOOK - select HAVE_COPY_THREAD_TLS + select HAVE_ARCH_TRANSPARENT_HUGEPAGE if ARC_MMU_V4 select HAVE_DEBUG_STACKOVERFLOW select HAVE_DEBUG_KMEMLEAK - select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_IOREMAP_PROT select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZMA select HAVE_KPROBES select HAVE_KRETPROBES + select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_MOD_ARCH_SPECIFIC - select HAVE_OPROFILE select HAVE_PERF_EVENTS - select HANDLE_DOMAIN_IRQ + select HAVE_SYSCALL_TRACEPOINTS select IRQ_DOMAIN + select LOCK_MM_AND_FIND_VMA select MODULES_USE_ELF_RELA select OF select OF_EARLY_FLATTREE select PCI_SYSCALL if PCI - select PERF_USE_VMALLOC if ARC_CACHE_VIPT_ALIASING select HAVE_ARCH_JUMP_LABEL if ISA_ARCV2 && !CPU_ENDIAN_BE32 - -config ARCH_HAS_CACHE_LINE_SIZE - def_bool y - -config TRACE_IRQFLAGS_SUPPORT - def_bool y + select TRACE_IRQFLAGS_SUPPORT config LOCKDEP_SUPPORT def_bool y @@ -64,9 +62,6 @@ config SCHED_OMIT_FRAME_POINTER config GENERIC_CSUM def_bool y -config ARCH_DISCONTIGMEM_ENABLE - def_bool n - config ARCH_FLATMEM_ENABLE def_bool y @@ -86,18 +81,12 @@ config STACKTRACE_SUPPORT def_bool y select STACKTRACE -config HAVE_ARCH_TRANSPARENT_HUGEPAGE - def_bool y - depends on ARC_MMU_V4 - menu "ARC Architecture Configuration" menu "ARC Platform/SoC/Board" source "arch/arc/plat-tb10x/Kconfig" source "arch/arc/plat-axs10x/Kconfig" -#New platform adds here -source "arch/arc/plat-eznps/Kconfig" source "arch/arc/plat-hsdk/Kconfig" endmenu @@ -127,16 +116,9 @@ choice default ARC_CPU_770 if ISA_ARCOMPACT default ARC_CPU_HS if ISA_ARCV2 -if ISA_ARCOMPACT - -config ARC_CPU_750D - bool "ARC750D" - select ARC_CANT_LLSC - help - Support for ARC750 core - config ARC_CPU_770 bool "ARC770" + depends on ISA_ARCOMPACT select ARC_HAS_SWAPE help Support for ARC770 core introduced with Rel 4.10 (Summer 2011) @@ -146,8 +128,6 @@ config ARC_CPU_770 -Caches: New Prog Model, Region Flush -Insns: endian swap, load-locked/store-conditional, time-stamp-ctr -endif #ISA_ARCOMPACT - config ARC_CPU_HS bool "ARC-HS" depends on ISA_ARCV2 @@ -169,6 +149,15 @@ config ARC_CPU_HS endchoice +config ARC_TUNE_MCPU + string "Override default -mcpu compiler flag" + default "" + help + Override default -mcpu=xxx compiler flag (which is set depending on + the ISA version) with the specified value. + NOTE: If specified flag isn't supported by current compiler the + ISA default value will be used as a fallback. + config CPU_BIG_ENDIAN bool "Enable Big Endian Mode" help @@ -243,10 +232,6 @@ config ARC_CACHE_PAGES Note that Global I/D ENABLE + Per Page DISABLE works but corollary Global DISABLE + Per Page ENABLE won't work -config ARC_CACHE_VIPT_ALIASING - bool "Support VIPT Aliasing D$" - depends on ARC_HAS_DCACHE && ISA_ARCOMPACT - endif #ARC_CACHE config ARC_HAS_ICCM @@ -276,33 +261,17 @@ config ARC_DCCM_BASE choice prompt "MMU Version" - default ARC_MMU_V3 if ARC_CPU_770 - default ARC_MMU_V2 if ARC_CPU_750D - default ARC_MMU_V4 if ARC_CPU_HS - -if ISA_ARCOMPACT - -config ARC_MMU_V1 - bool "MMU v1" - help - Orig ARC700 MMU - -config ARC_MMU_V2 - bool "MMU v2" - help - Fixed the deficiency of v1 - possible thrashing in memcpy scenario - when 2 D-TLB and 1 I-TLB entries index into same 2way set. + default ARC_MMU_V3 if ISA_ARCOMPACT + default ARC_MMU_V4 if ISA_ARCV2 config ARC_MMU_V3 bool "MMU v3" - depends on ARC_CPU_770 + depends on ISA_ARCOMPACT help Introduced with ARC700 4.10: New Features Variable Page size (1k-16k), var JTLB size 128 x (2 or 4) Shared Address Spaces (SASID) -endif - config ARC_MMU_V4 bool "MMU v4" depends on ISA_ARCV2 @@ -316,15 +285,17 @@ choice config ARC_PAGE_SIZE_8K bool "8KB" + select HAVE_PAGE_SIZE_8KB help Choose between 8k vs 16k config ARC_PAGE_SIZE_16K + select HAVE_PAGE_SIZE_16KB bool "16KB" - depends on ARC_MMU_V3 || ARC_MMU_V4 config ARC_PAGE_SIZE_4K bool "4KB" + select HAVE_PAGE_SIZE_4KB depends on ARC_MMU_V3 || ARC_MMU_V4 endchoice @@ -342,14 +313,9 @@ config ARC_HUGEPAGE_16M endchoice -config NODES_SHIFT - int "Maximum NUMA Nodes (as a power of 2)" - default "0" if !DISCONTIGMEM - default "1" if DISCONTIGMEM - depends on NEED_MULTIPLE_NODES - ---help--- - Accessing memory beyond 1GB (with or w/o PAE) requires 2 memory - zones. +config PGTABLE_LEVELS + int "Number of Page table levels" + default 2 config ARC_COMPACT_IRQ_LEVELS depends on ISA_ARCOMPACT @@ -401,13 +367,61 @@ config ARC_HAS_DIV_REM default y config ARC_HAS_ACCL_REGS - bool "Reg Pair ACCL:ACCH (FPU and/or MPY > 6)" + bool "Reg Pair ACCL:ACCH (FPU and/or MPY > 6 and/or DSP)" default y help Depending on the configuration, CPU can contain accumulator reg-pair (also referred to as r58:r59). These can also be used by gcc as GPR so kernel needs to save/restore per process +config ARC_DSP_HANDLED + def_bool n + +config ARC_DSP_SAVE_RESTORE_REGS + def_bool n + +choice + prompt "DSP support" + default ARC_DSP_NONE + help + Depending on the configuration, CPU can contain DSP registers + (ACC0_GLO, ACC0_GHI, DSP_BFLY0, DSP_CTRL, DSP_FFT_CTRL). + Below are options describing how to handle these registers in + interrupt entry / exit and in context switch. + +config ARC_DSP_NONE + bool "No DSP extension presence in HW" + help + No DSP extension presence in HW + +config ARC_DSP_KERNEL + bool "DSP extension in HW, no support for userspace" + select ARC_HAS_ACCL_REGS + select ARC_DSP_HANDLED + help + DSP extension presence in HW, no support for DSP-enabled userspace + applications. We don't save / restore DSP registers and only do + some minimal preparations so userspace won't be able to break kernel + +config ARC_DSP_USERSPACE + bool "Support DSP for userspace apps" + select ARC_HAS_ACCL_REGS + select ARC_DSP_HANDLED + select ARC_DSP_SAVE_RESTORE_REGS + help + DSP extension presence in HW, support save / restore DSP registers to + run DSP-enabled userspace applications + +config ARC_DSP_AGU_USERSPACE + bool "Support DSP with AGU for userspace apps" + select ARC_HAS_ACCL_REGS + select ARC_DSP_HANDLED + select ARC_DSP_SAVE_RESTORE_REGS + help + DSP and AGU extensions presence in HW, support save / restore DSP + and AGU registers to run DSP-enabled userspace applications +endchoice + config ARC_IRQ_NO_AUTOSAVE bool "Disable hardware autosave regfile on interrupts" default n @@ -416,6 +430,12 @@ config ARC_IRQ_NO_AUTOSAVE This is programmable and can be optionally disabled in which case software INTERRUPT_PROLOGUE/EPILGUE do the needed work +config ARC_LPB_DISABLE + bool "Disable loop buffer (LPB)" + help + On HS cores, loop buffer (LPB) is programmable in runtime and can + be optionally disabled. + endif # ISA_ARCV2 endmenu # "ARC CPU Configuration" @@ -444,7 +464,8 @@ config LINUX_RAM_BASE config HIGHMEM bool "High Memory Support" - select ARCH_DISCONTIGMEM_ENABLE + select HAVE_ARCH_PFN_VALID + select KMAP_LOCAL help With ARC 2G:2G address split, only upper 2G is directly addressable by kernel. Enable this to potentially allow access to rest of 2G and PAE @@ -471,11 +492,11 @@ config ARC_KVADDR_SIZE kernel-user gutter) config ARC_CURR_IN_REG - bool "Dedicate Register r25 for current_task pointer" + bool "cache current task pointer in gp" default y help - This reserved Register R25 to point to Current Task in - kernel mode. This saves memory access for each such access + This reserves gp register to point to Current Task in + kernel mode eliding memory access for each access config ARC_EMUL_UNALIGNED @@ -519,9 +540,6 @@ config ARC_DW2_UNWIND 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 @@ -539,9 +557,9 @@ config ARC_BUILTIN_DTB_NAME endmenu # "ARC Architecture Configuration" -config FORCE_MAX_ZONEORDER +config ARCH_FORCE_MAX_ORDER int "Maximum zone order" - default "12" if ARC_HUGEPAGE_16M - default "11" + default "11" if ARC_HUGEPAGE_16M + default "10" source "kernel/power/Kconfig" |