1# SPDX-License-Identifier: GPL-2.0-only 2config CSKY 3 def_bool y 4 select ARCH_32BIT_OFF_T 5 select ARCH_HAS_DMA_PREP_COHERENT 6 select ARCH_HAS_SYNC_DMA_FOR_CPU 7 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 8 select ARCH_USE_BUILTIN_BSWAP 9 select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2 10 select COMMON_CLK 11 select CLKSRC_MMIO 12 select CLKSRC_OF 13 select CSKY_MPINTC if CPU_CK860 14 select CSKY_MP_TIMER if CPU_CK860 15 select CSKY_APB_INTC 16 select DMA_DIRECT_REMAP 17 select IRQ_DOMAIN 18 select HANDLE_DOMAIN_IRQ 19 select DW_APB_TIMER_OF 20 select GENERIC_LIB_ASHLDI3 21 select GENERIC_LIB_ASHRDI3 22 select GENERIC_LIB_LSHRDI3 23 select GENERIC_LIB_MULDI3 24 select GENERIC_LIB_CMPDI2 25 select GENERIC_LIB_UCMPDI2 26 select GENERIC_ALLOCATOR 27 select GENERIC_ATOMIC64 28 select GENERIC_CLOCKEVENTS 29 select GENERIC_CPU_DEVICES 30 select GENERIC_IRQ_CHIP 31 select GENERIC_IRQ_PROBE 32 select GENERIC_IRQ_SHOW 33 select GENERIC_IRQ_MULTI_HANDLER 34 select GENERIC_SCHED_CLOCK 35 select GENERIC_SMP_IDLE_THREAD 36 select GX6605S_TIMER if CPU_CK610 37 select HAVE_ARCH_TRACEHOOK 38 select HAVE_ARCH_AUDITSYSCALL 39 select HAVE_DYNAMIC_FTRACE 40 select HAVE_FUNCTION_TRACER 41 select HAVE_FUNCTION_GRAPH_TRACER 42 select HAVE_FTRACE_MCOUNT_RECORD 43 select HAVE_KERNEL_GZIP 44 select HAVE_KERNEL_LZO 45 select HAVE_KERNEL_LZMA 46 select HAVE_PERF_EVENTS 47 select HAVE_PERF_REGS 48 select HAVE_PERF_USER_STACK_DUMP 49 select HAVE_DMA_API_DEBUG 50 select HAVE_DMA_CONTIGUOUS 51 select HAVE_SYSCALL_TRACEPOINTS 52 select MAY_HAVE_SPARSE_IRQ 53 select MODULES_USE_ELF_RELA if MODULES 54 select OF 55 select OF_EARLY_FLATTREE 56 select PERF_USE_VMALLOC if CPU_CK610 57 select RTC_LIB 58 select TIMER_OF 59 select USB_ARCH_HAS_EHCI 60 select USB_ARCH_HAS_OHCI 61 62config CPU_HAS_CACHEV2 63 bool 64 65config CPU_HAS_FPUV2 66 bool 67 68config CPU_HAS_HILO 69 bool 70 71config CPU_HAS_TLBI 72 bool 73 74config CPU_HAS_LDSTEX 75 bool 76 help 77 For SMP, CPU needs "ldex&stex" instrcutions to atomic operations. 78 79config CPU_NEED_TLBSYNC 80 bool 81 82config CPU_NEED_SOFTALIGN 83 bool 84 85config CPU_NO_USER_BKPT 86 bool 87 help 88 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because 89 abiv2 is 16/32bit instruction set and "trap 1" is 32bit. 90 So we need a 16bit instruction as user space bkpt, and it will cause an illegal 91 instruction exception. 92 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not. 93 94config GENERIC_CALIBRATE_DELAY 95 def_bool y 96 97config GENERIC_CSUM 98 def_bool y 99 100config GENERIC_HWEIGHT 101 def_bool y 102 103config MMU 104 def_bool y 105 106config STACKTRACE_SUPPORT 107 def_bool y 108 109config TIME_LOW_RES 110 def_bool y 111 112config TRACE_IRQFLAGS_SUPPORT 113 def_bool y 114 115config CPU_TLB_SIZE 116 int 117 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 118 default "1024" if (CPU_CK860) 119 120config CPU_ASID_BITS 121 int 122 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 123 default "12" if (CPU_CK860) 124 125config L1_CACHE_SHIFT 126 int 127 default "4" if (CPU_CK610) 128 default "5" if (CPU_CK807 || CPU_CK810) 129 default "6" if (CPU_CK860) 130 131menu "Processor type and features" 132 133choice 134 prompt "CPU MODEL" 135 default CPU_CK807 136 137config CPU_CK610 138 bool "CSKY CPU ck610" 139 select CPU_NEED_TLBSYNC 140 select CPU_NEED_SOFTALIGN 141 select CPU_NO_USER_BKPT 142 143config CPU_CK810 144 bool "CSKY CPU ck810" 145 select CPU_HAS_HILO 146 select CPU_NEED_TLBSYNC 147 148config CPU_CK807 149 bool "CSKY CPU ck807" 150 select CPU_HAS_HILO 151 152config CPU_CK860 153 bool "CSKY CPU ck860" 154 select CPU_HAS_TLBI 155 select CPU_HAS_CACHEV2 156 select CPU_HAS_LDSTEX 157 select CPU_HAS_FPUV2 158endchoice 159 160choice 161 prompt "C-SKY PMU type" 162 depends on PERF_EVENTS 163 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 164 165config CPU_PMU_NONE 166 bool "None" 167 168config CSKY_PMU_V1 169 bool "Performance Monitoring Unit Ver.1" 170 171endchoice 172 173choice 174 prompt "Power Manager Instruction (wait/doze/stop)" 175 default CPU_PM_NONE 176 177config CPU_PM_NONE 178 bool "None" 179 180config CPU_PM_WAIT 181 bool "wait" 182 183config CPU_PM_DOZE 184 bool "doze" 185 186config CPU_PM_STOP 187 bool "stop" 188endchoice 189 190config CPU_HAS_VDSP 191 bool "CPU has VDSP coprocessor" 192 depends on CPU_HAS_FPU && CPU_HAS_FPUV2 193 194config CPU_HAS_FPU 195 bool "CPU has FPU coprocessor" 196 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 197 198config CPU_HAS_TEE 199 bool "CPU has Trusted Execution Environment" 200 depends on CPU_CK810 201 202config SMP 203 bool "Symmetric Multi-Processing (SMP) support for C-SKY" 204 depends on CPU_CK860 205 default n 206 207config NR_CPUS 208 int "Maximum number of CPUs (2-32)" 209 range 2 32 210 depends on SMP 211 default "2" 212 213config HIGHMEM 214 bool "High Memory Support" 215 depends on !CPU_CK610 216 default y 217 218config FORCE_MAX_ZONEORDER 219 int "Maximum zone order" 220 default "11" 221 222config RAM_BASE 223 hex "DRAM start addr (the same with memory-section in dts)" 224 default 0x0 225 226config HOTPLUG_CPU 227 bool "Support for hot-pluggable CPUs" 228 select GENERIC_IRQ_MIGRATION 229 depends on SMP 230 help 231 Say Y here to allow turning CPUs off and on. CPUs can be 232 controlled through /sys/devices/system/cpu/cpu1/hotplug/target. 233 234 Say N if you want to disable CPU hotplug. 235endmenu 236 237source "kernel/Kconfig.hz" 238