diff options
Diffstat (limited to 'arch/arc/Kconfig')
| -rw-r--r-- | arch/arc/Kconfig | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 68350aa..52f5c07 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -116,9 +116,42 @@ config CPU_BIG_ENDIAN help Build kernel for Big Endian Mode of ARC CPU +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 @@ -213,6 +246,8 @@ config ARC_COMPACT_IRQ_LEVELS 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 @@ -261,6 +296,8 @@ config ARC_HAS_RTSC 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" @@ -309,7 +346,7 @@ menuconfig ARC_DBG config ARC_DBG_TLB_PARANOIA bool "Paranoia Checks in Low Level TLB Handlers" - depends on ARC_DBG + depends on ARC_DBG && !SMP default n config ARC_DBG_TLB_MISS_COUNT |