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 11 select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace) 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 DW_APB_TIMER_OF 21 select GENERIC_IOREMAP 22 select GENERIC_LIB_ASHLDI3 23 select GENERIC_LIB_ASHRDI3 24 select GENERIC_LIB_LSHRDI3 25 select GENERIC_LIB_MULDI3 26 select GENERIC_LIB_CMPDI2 27 select GENERIC_LIB_UCMPDI2 28 select GENERIC_ALLOCATOR 29 select GENERIC_ATOMIC64 30 select GENERIC_CPU_DEVICES 31 select GENERIC_IRQ_CHIP 32 select GENERIC_IRQ_PROBE 33 select GENERIC_IRQ_SHOW 34 select GENERIC_IRQ_MULTI_HANDLER 35 select GENERIC_SCHED_CLOCK 36 select GENERIC_SMP_IDLE_THREAD 37 select GENERIC_TIME_VSYSCALL 38 select GENERIC_VDSO_32 39 select GENERIC_GETTIMEOFDAY 40 select GX6605S_TIMER if CPU_CK610 41 select HAVE_ARCH_TRACEHOOK 42 select HAVE_ARCH_AUDITSYSCALL 43 select HAVE_ARCH_MMAP_RND_BITS 44 select HAVE_ARCH_SECCOMP_FILTER 45 select HAVE_CONTEXT_TRACKING 46 select HAVE_VIRT_CPU_ACCOUNTING_GEN 47 select HAVE_DEBUG_BUGVERBOSE 48 select HAVE_DEBUG_KMEMLEAK 49 select HAVE_DYNAMIC_FTRACE 50 select HAVE_DYNAMIC_FTRACE_WITH_REGS 51 select HAVE_GENERIC_VDSO 52 select HAVE_FUNCTION_TRACER 53 select HAVE_FUNCTION_GRAPH_TRACER 54 select HAVE_FUNCTION_ERROR_INJECTION 55 select HAVE_FTRACE_MCOUNT_RECORD 56 select HAVE_KERNEL_GZIP 57 select HAVE_KERNEL_LZO 58 select HAVE_KERNEL_LZMA 59 select HAVE_KPROBES if !CPU_CK610 60 select HAVE_KPROBES_ON_FTRACE if !CPU_CK610 61 select HAVE_KRETPROBES if !CPU_CK610 62 select HAVE_PERF_EVENTS 63 select HAVE_PERF_REGS 64 select HAVE_PERF_USER_STACK_DUMP 65 select HAVE_DMA_CONTIGUOUS 66 select HAVE_REGS_AND_STACK_ACCESS_API 67 select HAVE_RSEQ 68 select HAVE_STACKPROTECTOR 69 select HAVE_SYSCALL_TRACEPOINTS 70 select MAY_HAVE_SPARSE_IRQ 71 select MODULES_USE_ELF_RELA if MODULES 72 select OF 73 select OF_EARLY_FLATTREE 74 select PERF_USE_VMALLOC if CPU_CK610 75 select RTC_LIB 76 select TIMER_OF 77 select GENERIC_PCI_IOMAP 78 select HAVE_PCI 79 select PCI_DOMAINS_GENERIC if PCI 80 select PCI_SYSCALL if PCI 81 select PCI_MSI if PCI 82 select SET_FS 83 select TRACE_IRQFLAGS_SUPPORT 84 85config LOCKDEP_SUPPORT 86 def_bool y 87 88config ARCH_SUPPORTS_UPROBES 89 def_bool y if !CPU_CK610 90 91config CPU_HAS_CACHEV2 92 bool 93 94config CPU_HAS_FPUV2 95 bool 96 97config CPU_HAS_HILO 98 bool 99 100config CPU_HAS_TLBI 101 bool 102 103config CPU_HAS_LDSTEX 104 bool 105 help 106 For SMP, CPU needs "ldex&stex" instructions for atomic operations. 107 108config CPU_NEED_TLBSYNC 109 bool 110 111config CPU_NEED_SOFTALIGN 112 bool 113 114config CPU_NO_USER_BKPT 115 bool 116 help 117 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because 118 abiv2 is 16/32bit instruction set and "trap 1" is 32bit. 119 So we need a 16bit instruction as user space bkpt, and it will cause an illegal 120 instruction exception. 121 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not. 122 123config GENERIC_CALIBRATE_DELAY 124 def_bool y 125 126config GENERIC_CSUM 127 def_bool y 128 129config GENERIC_HWEIGHT 130 def_bool y 131 132config MMU 133 def_bool y 134 135config STACKTRACE_SUPPORT 136 def_bool y 137 138config TIME_LOW_RES 139 def_bool y 140 141config CPU_TLB_SIZE 142 int 143 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 144 default "1024" if (CPU_CK860) 145 146config CPU_ASID_BITS 147 int 148 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 149 default "12" if (CPU_CK860) 150 151config L1_CACHE_SHIFT 152 int 153 default "4" if (CPU_CK610) 154 default "5" if (CPU_CK807 || CPU_CK810) 155 default "6" if (CPU_CK860) 156 157config ARCH_MMAP_RND_BITS_MIN 158 default 8 159 160# max bits determined by the following formula: 161# VA_BITS - PAGE_SHIFT - 3 162config ARCH_MMAP_RND_BITS_MAX 163 default 17 164 165menu "Processor type and features" 166 167choice 168 prompt "CPU MODEL" 169 default CPU_CK807 170 171config CPU_CK610 172 bool "CSKY CPU ck610" 173 select CPU_NEED_TLBSYNC 174 select CPU_NEED_SOFTALIGN 175 select CPU_NO_USER_BKPT 176 177config CPU_CK810 178 bool "CSKY CPU ck810" 179 select CPU_HAS_HILO 180 select CPU_NEED_TLBSYNC 181 182config CPU_CK807 183 bool "CSKY CPU ck807" 184 select CPU_HAS_HILO 185 186config CPU_CK860 187 bool "CSKY CPU ck860" 188 select CPU_HAS_TLBI 189 select CPU_HAS_CACHEV2 190 select CPU_HAS_LDSTEX 191 select CPU_HAS_FPUV2 192endchoice 193 194choice 195 prompt "PAGE OFFSET" 196 default PAGE_OFFSET_80000000 197 198config PAGE_OFFSET_80000000 199 bool "PAGE OFFSET 2G (user:kernel = 2:2)" 200 201config PAGE_OFFSET_A0000000 202 bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)" 203endchoice 204 205config PAGE_OFFSET 206 hex 207 default 0x80000000 if PAGE_OFFSET_80000000 208 default 0xa0000000 if PAGE_OFFSET_A0000000 209choice 210 211 prompt "C-SKY PMU type" 212 depends on PERF_EVENTS 213 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 214 215config CPU_PMU_NONE 216 bool "None" 217 218config CSKY_PMU_V1 219 bool "Performance Monitoring Unit Ver.1" 220 221endchoice 222 223choice 224 prompt "Power Manager Instruction (wait/doze/stop)" 225 default CPU_PM_NONE 226 227config CPU_PM_NONE 228 bool "None" 229 230config CPU_PM_WAIT 231 bool "wait" 232 233config CPU_PM_DOZE 234 bool "doze" 235 236config CPU_PM_STOP 237 bool "stop" 238endchoice 239 240menuconfig HAVE_TCM 241 bool "Tightly-Coupled/Sram Memory" 242 depends on !COMPILE_TEST 243 help 244 The implementation are not only used by TCM (Tightly-Coupled Meory) 245 but also used by sram on SOC bus. It follow existed linux tcm 246 software interface, so that old tcm application codes could be 247 re-used directly. 248 249if HAVE_TCM 250config ITCM_RAM_BASE 251 hex "ITCM ram base" 252 default 0xffffffff 253 254config ITCM_NR_PAGES 255 int "Page count of ITCM size: NR*4KB" 256 range 1 256 257 default 32 258 259config HAVE_DTCM 260 bool "DTCM Support" 261 262config DTCM_RAM_BASE 263 hex "DTCM ram base" 264 depends on HAVE_DTCM 265 default 0xffffffff 266 267config DTCM_NR_PAGES 268 int "Page count of DTCM size: NR*4KB" 269 depends on HAVE_DTCM 270 range 1 256 271 default 32 272endif 273 274config CPU_HAS_VDSP 275 bool "CPU has VDSP coprocessor" 276 depends on CPU_HAS_FPU && CPU_HAS_FPUV2 277 278config CPU_HAS_FPU 279 bool "CPU has FPU coprocessor" 280 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 281 282config CPU_HAS_ICACHE_INS 283 bool "CPU has Icache invalidate instructions" 284 depends on CPU_HAS_CACHEV2 285 286config CPU_HAS_TEE 287 bool "CPU has Trusted Execution Environment" 288 depends on CPU_CK810 289 290config SMP 291 bool "Symmetric Multi-Processing (SMP) support for C-SKY" 292 depends on CPU_CK860 293 default n 294 295config NR_CPUS 296 int "Maximum number of CPUs (2-32)" 297 range 2 32 298 depends on SMP 299 default "4" 300 301config HIGHMEM 302 bool "High Memory Support" 303 depends on !CPU_CK610 304 select KMAP_LOCAL 305 default y 306 307config FORCE_MAX_ZONEORDER 308 int "Maximum zone order" 309 default "11" 310 311config DRAM_BASE 312 hex "DRAM start addr (the same with memory-section in dts)" 313 default 0x0 314 315config HOTPLUG_CPU 316 bool "Support for hot-pluggable CPUs" 317 select GENERIC_IRQ_MIGRATION 318 depends on SMP 319 help 320 Say Y here to allow turning CPUs off and on. CPUs can be 321 controlled through /sys/devices/system/cpu/cpu1/hotplug/target. 322 323 Say N if you want to disable CPU hotplug. 324endmenu 325 326source "arch/csky/Kconfig.platforms" 327 328source "kernel/Kconfig.hz" 329