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_GCOV_PROFILE_ALL 7 select ARCH_HAS_SYNC_DMA_FOR_CPU 8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 9 select ARCH_USE_BUILTIN_BSWAP 10 select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2 11 select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 12 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT 13 select COMMON_CLK 14 select CLKSRC_MMIO 15 select CSKY_MPINTC if CPU_CK860 16 select CSKY_MP_TIMER if CPU_CK860 17 select CSKY_APB_INTC 18 select DMA_DIRECT_REMAP 19 select IRQ_DOMAIN 20 select HANDLE_DOMAIN_IRQ 21 select DW_APB_TIMER_OF 22 select GENERIC_IOREMAP 23 select GENERIC_LIB_ASHLDI3 24 select GENERIC_LIB_ASHRDI3 25 select GENERIC_LIB_LSHRDI3 26 select GENERIC_LIB_MULDI3 27 select GENERIC_LIB_CMPDI2 28 select GENERIC_LIB_UCMPDI2 29 select GENERIC_ALLOCATOR 30 select GENERIC_ATOMIC64 31 select GENERIC_CPU_DEVICES 32 select GENERIC_IRQ_CHIP 33 select GENERIC_IRQ_PROBE 34 select GENERIC_IRQ_SHOW 35 select GENERIC_IRQ_MULTI_HANDLER 36 select GENERIC_SCHED_CLOCK 37 select GENERIC_SMP_IDLE_THREAD 38 select GX6605S_TIMER if CPU_CK610 39 select HAVE_ARCH_TRACEHOOK 40 select HAVE_ARCH_AUDITSYSCALL 41 select HAVE_ARCH_MMAP_RND_BITS 42 select HAVE_ARCH_SECCOMP_FILTER 43 select HAVE_CONTEXT_TRACKING 44 select HAVE_VIRT_CPU_ACCOUNTING_GEN 45 select HAVE_DEBUG_BUGVERBOSE 46 select HAVE_DYNAMIC_FTRACE 47 select HAVE_DYNAMIC_FTRACE_WITH_REGS 48 select HAVE_FUNCTION_TRACER 49 select HAVE_FUNCTION_GRAPH_TRACER 50 select HAVE_FUNCTION_ERROR_INJECTION 51 select HAVE_FUTEX_CMPXCHG if FUTEX && SMP 52 select HAVE_FTRACE_MCOUNT_RECORD 53 select HAVE_KERNEL_GZIP 54 select HAVE_KERNEL_LZO 55 select HAVE_KERNEL_LZMA 56 select HAVE_KPROBES if !CPU_CK610 57 select HAVE_KPROBES_ON_FTRACE if !CPU_CK610 58 select HAVE_KRETPROBES if !CPU_CK610 59 select HAVE_PERF_EVENTS 60 select HAVE_PERF_REGS 61 select HAVE_PERF_USER_STACK_DUMP 62 select HAVE_DMA_CONTIGUOUS 63 select HAVE_REGS_AND_STACK_ACCESS_API 64 select HAVE_RSEQ 65 select HAVE_STACKPROTECTOR 66 select HAVE_SYSCALL_TRACEPOINTS 67 select MAY_HAVE_SPARSE_IRQ 68 select MODULES_USE_ELF_RELA if MODULES 69 select OF 70 select OF_EARLY_FLATTREE 71 select PERF_USE_VMALLOC if CPU_CK610 72 select RTC_LIB 73 select TIMER_OF 74 select USB_ARCH_HAS_EHCI 75 select USB_ARCH_HAS_OHCI 76 select GENERIC_PCI_IOMAP 77 select HAVE_PCI 78 select PCI_DOMAINS_GENERIC if PCI 79 select PCI_SYSCALL if PCI 80 select PCI_MSI if PCI 81 select SET_FS 82 83config LOCKDEP_SUPPORT 84 def_bool y 85 86config ARCH_SUPPORTS_UPROBES 87 def_bool y if !CPU_CK610 88 89config CPU_HAS_CACHEV2 90 bool 91 92config CPU_HAS_FPUV2 93 bool 94 95config CPU_HAS_HILO 96 bool 97 98config CPU_HAS_TLBI 99 bool 100 101config CPU_HAS_LDSTEX 102 bool 103 help 104 For SMP, CPU needs "ldex&stex" instructions for atomic operations. 105 106config CPU_NEED_TLBSYNC 107 bool 108 109config CPU_NEED_SOFTALIGN 110 bool 111 112config CPU_NO_USER_BKPT 113 bool 114 help 115 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because 116 abiv2 is 16/32bit instruction set and "trap 1" is 32bit. 117 So we need a 16bit instruction as user space bkpt, and it will cause an illegal 118 instruction exception. 119 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not. 120 121config GENERIC_CALIBRATE_DELAY 122 def_bool y 123 124config GENERIC_CSUM 125 def_bool y 126 127config GENERIC_HWEIGHT 128 def_bool y 129 130config MMU 131 def_bool y 132 133config STACKTRACE_SUPPORT 134 def_bool y 135 136config TIME_LOW_RES 137 def_bool y 138 139config TRACE_IRQFLAGS_SUPPORT 140 def_bool y 141 142config CPU_TLB_SIZE 143 int 144 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 145 default "1024" if (CPU_CK860) 146 147config CPU_ASID_BITS 148 int 149 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 150 default "12" if (CPU_CK860) 151 152config L1_CACHE_SHIFT 153 int 154 default "4" if (CPU_CK610) 155 default "5" if (CPU_CK807 || CPU_CK810) 156 default "6" if (CPU_CK860) 157 158config ARCH_MMAP_RND_BITS_MIN 159 default 8 160 161# max bits determined by the following formula: 162# VA_BITS - PAGE_SHIFT - 3 163config ARCH_MMAP_RND_BITS_MAX 164 default 17 165 166menu "Processor type and features" 167 168choice 169 prompt "CPU MODEL" 170 default CPU_CK807 171 172config CPU_CK610 173 bool "CSKY CPU ck610" 174 select CPU_NEED_TLBSYNC 175 select CPU_NEED_SOFTALIGN 176 select CPU_NO_USER_BKPT 177 178config CPU_CK810 179 bool "CSKY CPU ck810" 180 select CPU_HAS_HILO 181 select CPU_NEED_TLBSYNC 182 183config CPU_CK807 184 bool "CSKY CPU ck807" 185 select CPU_HAS_HILO 186 187config CPU_CK860 188 bool "CSKY CPU ck860" 189 select CPU_HAS_TLBI 190 select CPU_HAS_CACHEV2 191 select CPU_HAS_LDSTEX 192 select CPU_HAS_FPUV2 193endchoice 194 195choice 196 prompt "PAGE OFFSET" 197 default PAGE_OFFSET_80000000 198 199config PAGE_OFFSET_80000000 200 bool "PAGE OFFSET 2G (user:kernel = 2:2)" 201 202config PAGE_OFFSET_A0000000 203 bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)" 204endchoice 205 206config PAGE_OFFSET 207 hex 208 default 0x80000000 if PAGE_OFFSET_80000000 209 default 0xa0000000 if PAGE_OFFSET_A0000000 210choice 211 212 prompt "C-SKY PMU type" 213 depends on PERF_EVENTS 214 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 215 216config CPU_PMU_NONE 217 bool "None" 218 219config CSKY_PMU_V1 220 bool "Performance Monitoring Unit Ver.1" 221 222endchoice 223 224choice 225 prompt "Power Manager Instruction (wait/doze/stop)" 226 default CPU_PM_NONE 227 228config CPU_PM_NONE 229 bool "None" 230 231config CPU_PM_WAIT 232 bool "wait" 233 234config CPU_PM_DOZE 235 bool "doze" 236 237config CPU_PM_STOP 238 bool "stop" 239endchoice 240 241menuconfig HAVE_TCM 242 bool "Tightly-Coupled/Sram Memory" 243 select GENERIC_ALLOCATOR 244 help 245 The implementation are not only used by TCM (Tightly-Coupled Meory) 246 but also used by sram on SOC bus. It follow existed linux tcm 247 software interface, so that old tcm application codes could be 248 re-used directly. 249 250if HAVE_TCM 251config ITCM_RAM_BASE 252 hex "ITCM ram base" 253 default 0xffffffff 254 255config ITCM_NR_PAGES 256 int "Page count of ITCM size: NR*4KB" 257 range 1 256 258 default 32 259 260config HAVE_DTCM 261 bool "DTCM Support" 262 263config DTCM_RAM_BASE 264 hex "DTCM ram base" 265 depends on HAVE_DTCM 266 default 0xffffffff 267 268config DTCM_NR_PAGES 269 int "Page count of DTCM size: NR*4KB" 270 depends on HAVE_DTCM 271 range 1 256 272 default 32 273endif 274 275config CPU_HAS_VDSP 276 bool "CPU has VDSP coprocessor" 277 depends on CPU_HAS_FPU && CPU_HAS_FPUV2 278 279config CPU_HAS_FPU 280 bool "CPU has FPU coprocessor" 281 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 282 283config CPU_HAS_ICACHE_INS 284 bool "CPU has Icache invalidate instructions" 285 depends on CPU_HAS_CACHEV2 286 287config CPU_HAS_TEE 288 bool "CPU has Trusted Execution Environment" 289 depends on CPU_CK810 290 291config SMP 292 bool "Symmetric Multi-Processing (SMP) support for C-SKY" 293 depends on CPU_CK860 294 default n 295 296config NR_CPUS 297 int "Maximum number of CPUs (2-32)" 298 range 2 32 299 depends on SMP 300 default "4" 301 302config HIGHMEM 303 bool "High Memory Support" 304 depends on !CPU_CK610 305 select KMAP_LOCAL 306 default y 307 308config FORCE_MAX_ZONEORDER 309 int "Maximum zone order" 310 default "11" 311 312config RAM_BASE 313 hex "DRAM start addr (the same with memory-section in dts)" 314 default 0x0 315 316config HOTPLUG_CPU 317 bool "Support for hot-pluggable CPUs" 318 select GENERIC_IRQ_MIGRATION 319 depends on SMP 320 help 321 Say Y here to allow turning CPUs off and on. CPUs can be 322 controlled through /sys/devices/system/cpu/cpu1/hotplug/target. 323 324 Say N if you want to disable CPU hotplug. 325endmenu 326 327source "arch/csky/Kconfig.platforms" 328 329source "kernel/Kconfig.hz" 330