1config CSKY 2 def_bool y 3 select ARCH_32BIT_OFF_T 4 select ARCH_HAS_SYNC_DMA_FOR_CPU 5 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 6 select ARCH_USE_BUILTIN_BSWAP 7 select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2 8 select COMMON_CLK 9 select CLKSRC_MMIO 10 select CLKSRC_OF 11 select DMA_DIRECT_REMAP 12 select IRQ_DOMAIN 13 select HANDLE_DOMAIN_IRQ 14 select DW_APB_TIMER_OF 15 select GENERIC_LIB_ASHLDI3 16 select GENERIC_LIB_ASHRDI3 17 select GENERIC_LIB_LSHRDI3 18 select GENERIC_LIB_MULDI3 19 select GENERIC_LIB_CMPDI2 20 select GENERIC_LIB_UCMPDI2 21 select GENERIC_ALLOCATOR 22 select GENERIC_ATOMIC64 23 select GENERIC_CLOCKEVENTS 24 select GENERIC_CPU_DEVICES 25 select GENERIC_IRQ_CHIP 26 select GENERIC_IRQ_PROBE 27 select GENERIC_IRQ_SHOW 28 select GENERIC_IRQ_MULTI_HANDLER 29 select GENERIC_SCHED_CLOCK 30 select GENERIC_SMP_IDLE_THREAD 31 select HAVE_ARCH_TRACEHOOK 32 select HAVE_FUNCTION_TRACER 33 select HAVE_FUNCTION_GRAPH_TRACER 34 select HAVE_GENERIC_DMA_COHERENT 35 select HAVE_KERNEL_GZIP 36 select HAVE_KERNEL_LZO 37 select HAVE_KERNEL_LZMA 38 select HAVE_PERF_EVENTS 39 select HAVE_C_RECORDMCOUNT 40 select HAVE_DMA_API_DEBUG 41 select HAVE_DMA_CONTIGUOUS 42 select MAY_HAVE_SPARSE_IRQ 43 select MODULES_USE_ELF_RELA if MODULES 44 select OF 45 select OF_EARLY_FLATTREE 46 select OF_RESERVED_MEM 47 select PERF_USE_VMALLOC if CPU_CK610 48 select RTC_LIB 49 select TIMER_OF 50 select USB_ARCH_HAS_EHCI 51 select USB_ARCH_HAS_OHCI 52 53config CPU_HAS_CACHEV2 54 bool 55 56config CPU_HAS_FPUV2 57 bool 58 59config CPU_HAS_HILO 60 bool 61 62config CPU_HAS_TLBI 63 bool 64 65config CPU_HAS_LDSTEX 66 bool 67 help 68 For SMP, CPU needs "ldex&stex" instrcutions to atomic operations. 69 70config CPU_NEED_TLBSYNC 71 bool 72 73config CPU_NEED_SOFTALIGN 74 bool 75 76config CPU_NO_USER_BKPT 77 bool 78 help 79 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because 80 abiv2 is 16/32bit instruction set and "trap 1" is 32bit. 81 So we need a 16bit instruction as user space bkpt, and it will cause an illegal 82 instruction exception. 83 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not. 84 85config GENERIC_CALIBRATE_DELAY 86 def_bool y 87 88config GENERIC_CSUM 89 def_bool y 90 91config GENERIC_HWEIGHT 92 def_bool y 93 94config MMU 95 def_bool y 96 97config RWSEM_GENERIC_SPINLOCK 98 def_bool y 99 100config STACKTRACE_SUPPORT 101 def_bool y 102 103config TIME_LOW_RES 104 def_bool y 105 106config TRACE_IRQFLAGS_SUPPORT 107 def_bool y 108 109config CPU_TLB_SIZE 110 int 111 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 112 default "1024" if (CPU_CK860) 113 114config CPU_ASID_BITS 115 int 116 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 117 default "12" if (CPU_CK860) 118 119config L1_CACHE_SHIFT 120 int 121 default "4" if (CPU_CK610) 122 default "5" if (CPU_CK807 || CPU_CK810) 123 default "6" if (CPU_CK860) 124 125menu "Processor type and features" 126 127choice 128 prompt "CPU MODEL" 129 default CPU_CK807 130 131config CPU_CK610 132 bool "CSKY CPU ck610" 133 select CPU_NEED_TLBSYNC 134 select CPU_NEED_SOFTALIGN 135 select CPU_NO_USER_BKPT 136 137config CPU_CK810 138 bool "CSKY CPU ck810" 139 select CPU_HAS_HILO 140 select CPU_NEED_TLBSYNC 141 142config CPU_CK807 143 bool "CSKY CPU ck807" 144 select CPU_HAS_HILO 145 146config CPU_CK860 147 bool "CSKY CPU ck860" 148 select CPU_HAS_TLBI 149 select CPU_HAS_CACHEV2 150 select CPU_HAS_LDSTEX 151 select CPU_HAS_FPUV2 152endchoice 153 154choice 155 prompt "C-SKY PMU type" 156 depends on PERF_EVENTS 157 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 158 159config CPU_PMU_NONE 160 bool "None" 161 162config CSKY_PMU_V1 163 bool "Performance Monitoring Unit Ver.1" 164 165endchoice 166 167choice 168 prompt "Power Manager Instruction (wait/doze/stop)" 169 default CPU_PM_NONE 170 171config CPU_PM_NONE 172 bool "None" 173 174config CPU_PM_WAIT 175 bool "wait" 176 177config CPU_PM_DOZE 178 bool "doze" 179 180config CPU_PM_STOP 181 bool "stop" 182endchoice 183 184config CPU_HAS_VDSP 185 bool "CPU has VDSP coprocessor" 186 depends on CPU_HAS_FPU && CPU_HAS_FPUV2 187 188config CPU_HAS_FPU 189 bool "CPU has FPU coprocessor" 190 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 191 192config CPU_HAS_TEE 193 bool "CPU has Trusted Execution Environment" 194 depends on CPU_CK810 195 196config SMP 197 bool "Symmetric Multi-Processing (SMP) support for C-SKY" 198 depends on CPU_CK860 199 default n 200 201config NR_CPUS 202 int "Maximum number of CPUs (2-32)" 203 range 2 32 204 depends on SMP 205 default "2" 206 207config HIGHMEM 208 bool "High Memory Support" 209 depends on !CPU_CK610 210 default y 211 212config FORCE_MAX_ZONEORDER 213 int "Maximum zone order" 214 default "11" 215 216config RAM_BASE 217 hex "DRAM start addr (the same with memory-section in dts)" 218 default 0x0 219 220config HOTPLUG_CPU 221 bool "Support for hot-pluggable CPUs" 222 select GENERIC_IRQ_MIGRATION 223 depends on SMP 224 help 225 Say Y here to allow turning CPUs off and on. CPUs can be 226 controlled through /sys/devices/system/cpu/cpu1/hotplug/target. 227 228 Say N if you want to disable CPU hotplug. 229endmenu 230 231source "kernel/Kconfig.hz" 232