arch/csky/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 config 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_USE_QUEUED_SPINLOCKS
  12         select ARCH_INLINE_READ_LOCK if !PREEMPTION
  13         select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION
  14         select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION
  15         select ARCH_INLINE_READ_LOCK_IRQSAVE if !PREEMPTION
  16         select ARCH_INLINE_READ_UNLOCK if !PREEMPTION
  17         select ARCH_INLINE_READ_UNLOCK_BH if !PREEMPTION
  18         select ARCH_INLINE_READ_UNLOCK_IRQ if !PREEMPTION
  19         select ARCH_INLINE_READ_UNLOCK_IRQRESTORE if !PREEMPTION
  20         select ARCH_INLINE_WRITE_LOCK if !PREEMPTION
  21         select ARCH_INLINE_WRITE_LOCK_BH if !PREEMPTION
  22         select ARCH_INLINE_WRITE_LOCK_IRQ if !PREEMPTION
  23         select ARCH_INLINE_WRITE_LOCK_IRQSAVE if !PREEMPTION
  24         select ARCH_INLINE_WRITE_UNLOCK if !PREEMPTION
  25         select ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPTION
  26         select ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPTION
  27         select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPTION
  28         select ARCH_INLINE_SPIN_TRYLOCK if !PREEMPTION
  29         select ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPTION
  30         select ARCH_INLINE_SPIN_LOCK if !PREEMPTION
  31         select ARCH_INLINE_SPIN_LOCK_BH if !PREEMPTION
  32         select ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPTION
  33         select ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPTION
  34         select ARCH_INLINE_SPIN_UNLOCK if !PREEMPTION
  35         select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION
  36         select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION
  37         select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION
  38         select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace)
  39         select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
  40         select COMMON_CLK
  41         select CLKSRC_MMIO
  42         select CSKY_MPINTC if CPU_CK860
  43         select CSKY_MP_TIMER if CPU_CK860
  44         select CSKY_APB_INTC
  45         select DMA_DIRECT_REMAP
  46         select IRQ_DOMAIN
  47         select DW_APB_TIMER_OF
  48         select GENERIC_IOREMAP
  49         select GENERIC_LIB_ASHLDI3
  50         select GENERIC_LIB_ASHRDI3
  51         select GENERIC_LIB_LSHRDI3
  52         select GENERIC_LIB_MULDI3
  53         select GENERIC_LIB_CMPDI2
  54         select GENERIC_LIB_UCMPDI2
  55         select GENERIC_ALLOCATOR
  56         select GENERIC_ATOMIC64
  57         select GENERIC_CPU_DEVICES
  58         select GENERIC_IRQ_CHIP
  59         select GENERIC_IRQ_PROBE
  60         select GENERIC_IRQ_SHOW
  61         select GENERIC_IRQ_MULTI_HANDLER
  62         select GENERIC_SCHED_CLOCK
  63         select GENERIC_SMP_IDLE_THREAD
  64         select GENERIC_TIME_VSYSCALL
  65         select GENERIC_VDSO_32
  66         select GENERIC_GETTIMEOFDAY
  67         select GX6605S_TIMER if CPU_CK610
  68         select HAVE_ARCH_TRACEHOOK
  69         select HAVE_ARCH_AUDITSYSCALL
  70         select HAVE_ARCH_JUMP_LABEL if !CPU_CK610
  71         select HAVE_ARCH_JUMP_LABEL_RELATIVE
  72         select HAVE_ARCH_MMAP_RND_BITS
  73         select HAVE_ARCH_SECCOMP_FILTER
  74         select HAVE_CONTEXT_TRACKING_USER
  75         select HAVE_VIRT_CPU_ACCOUNTING_GEN
  76         select HAVE_DEBUG_BUGVERBOSE
  77         select HAVE_DEBUG_KMEMLEAK
  78         select HAVE_DYNAMIC_FTRACE
  79         select HAVE_DYNAMIC_FTRACE_WITH_REGS
  80         select HAVE_GENERIC_VDSO
  81         select HAVE_FUNCTION_TRACER
  82         select HAVE_FUNCTION_GRAPH_TRACER
  83         select HAVE_FUNCTION_ERROR_INJECTION
  84         select HAVE_FTRACE_MCOUNT_RECORD
  85         select HAVE_KERNEL_GZIP
  86         select HAVE_KERNEL_LZO
  87         select HAVE_KERNEL_LZMA
  88         select HAVE_KPROBES if !CPU_CK610
  89         select HAVE_KPROBES_ON_FTRACE if !CPU_CK610
  90         select HAVE_KRETPROBES if !CPU_CK610
  91         select HAVE_PERF_EVENTS
  92         select HAVE_PERF_REGS
  93         select HAVE_PERF_USER_STACK_DUMP
  94         select HAVE_DMA_CONTIGUOUS
  95         select HAVE_REGS_AND_STACK_ACCESS_API
  96         select HAVE_RSEQ
  97         select HAVE_STACKPROTECTOR
  98         select HAVE_SYSCALL_TRACEPOINTS
  99         select LOCK_MM_AND_FIND_VMA
 100         select MAY_HAVE_SPARSE_IRQ
 101         select MODULES_USE_ELF_RELA if MODULES
 102         select OF
 103         select OF_EARLY_FLATTREE
 104         select PERF_USE_VMALLOC if CPU_CK610
 105         select RTC_LIB
 106         select TIMER_OF
 107         select GENERIC_PCI_IOMAP
 108         select HAVE_PCI
 109         select PCI_DOMAINS_GENERIC if PCI
 110         select PCI_SYSCALL if PCI
 111         select PCI_MSI if PCI
 112         select TRACE_IRQFLAGS_SUPPORT
 113
 114 config LOCKDEP_SUPPORT
 115         def_bool y
 116
 117 config ARCH_SUPPORTS_UPROBES
 118         def_bool y if !CPU_CK610
 119
 120 config CPU_HAS_CACHEV2
 121         bool
 122
 123 config CPU_HAS_FPUV2
 124         bool
 125
 126 config CPU_HAS_HILO
 127         bool
 128
 129 config CPU_HAS_TLBI
 130         bool
 131
 132 config CPU_HAS_LDSTEX
 133         bool
 134         help
 135           For SMP, CPU needs "ldex&stex" instructions for atomic operations.
 136
 137 config CPU_NEED_TLBSYNC
 138         bool
 139
 140 config CPU_NEED_SOFTALIGN
 141         bool
 142
 143 config CPU_NO_USER_BKPT
 144         bool
 145         help
 146           For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
 147           abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
 148           So we need a 16bit instruction as user space bkpt, and it will cause an illegal
 149           instruction exception.
 150           In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
 151
 152 config GENERIC_CALIBRATE_DELAY
 153         def_bool y
 154
 155 config GENERIC_CSUM
 156         def_bool y
 157
 158 config GENERIC_HWEIGHT
 159         def_bool y
 160
 161 config MMU
 162         def_bool y
 163
 164 config STACKTRACE_SUPPORT
 165         def_bool y
 166
 167 config TIME_LOW_RES
 168         def_bool y
 169
 170 config CPU_TLB_SIZE
 171         int
 172         default "128"   if (CPU_CK610 || CPU_CK807 || CPU_CK810)
 173         default "1024"  if (CPU_CK860)
 174
 175 config CPU_ASID_BITS
 176         int
 177         default "8"     if (CPU_CK610 || CPU_CK807 || CPU_CK810)
 178         default "12"    if (CPU_CK860)
 179
 180 config L1_CACHE_SHIFT
 181         int
 182         default "4"     if (CPU_CK610)
 183         default "5"     if (CPU_CK807 || CPU_CK810)
 184         default "6"     if (CPU_CK860)
 185
 186 config ARCH_MMAP_RND_BITS_MIN
 187         default 8
 188
 189 # max bits determined by the following formula:
 190 #  VA_BITS - PAGE_SHIFT - 3
 191 config ARCH_MMAP_RND_BITS_MAX
 192         default 17
 193
 194 menu "Processor type and features"
 195
 196 choice
 197         prompt "CPU MODEL"
 198         default CPU_CK807
 199
 200 config CPU_CK610
 201         bool "CSKY CPU ck610"
 202         select CPU_NEED_TLBSYNC
 203         select CPU_NEED_SOFTALIGN
 204         select CPU_NO_USER_BKPT
 205
 206 config CPU_CK810
 207         bool "CSKY CPU ck810"
 208         select CPU_HAS_HILO
 209         select CPU_NEED_TLBSYNC
 210
 211 config CPU_CK807
 212         bool "CSKY CPU ck807"
 213         select CPU_HAS_HILO
 214
 215 config CPU_CK860
 216         bool "CSKY CPU ck860"
 217         select CPU_HAS_TLBI
 218         select CPU_HAS_CACHEV2
 219         select CPU_HAS_LDSTEX
 220         select CPU_HAS_FPUV2
 221 endchoice
 222
 223 choice
 224         prompt "PAGE OFFSET"
 225         default PAGE_OFFSET_80000000
 226
 227 config PAGE_OFFSET_80000000
 228         bool "PAGE OFFSET 2G (user:kernel = 2:2)"
 229
 230 config PAGE_OFFSET_A0000000
 231         bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
 232 endchoice
 233
 234 config PAGE_OFFSET
 235         hex
 236         default 0x80000000 if PAGE_OFFSET_80000000
 237         default 0xa0000000 if PAGE_OFFSET_A0000000
 238 choice
 239
 240         prompt "C-SKY PMU type"
 241         depends on PERF_EVENTS
 242         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
 243
 244 config CPU_PMU_NONE
 245         bool "None"
 246
 247 config CSKY_PMU_V1
 248         bool "Performance Monitoring Unit Ver.1"
 249
 250 endchoice
 251
 252 choice
 253         prompt "Power Manager Instruction (wait/doze/stop)"
 254         default CPU_PM_NONE
 255
 256 config CPU_PM_NONE
 257         bool "None"
 258
 259 config CPU_PM_WAIT
 260         bool "wait"
 261
 262 config CPU_PM_DOZE
 263         bool "doze"
 264
 265 config CPU_PM_STOP
 266         bool "stop"
 267 endchoice
 268
 269 menuconfig HAVE_TCM
 270         bool "Tightly-Coupled/Sram Memory"
 271         depends on !COMPILE_TEST
 272         help
 273           The implementation are not only used by TCM (Tightly-Coupled Meory)
 274           but also used by sram on SOC bus. It follow existed linux tcm
 275           software interface, so that old tcm application codes could be
 276           re-used directly.
 277
 278 if HAVE_TCM
 279 config ITCM_RAM_BASE
 280         hex "ITCM ram base"
 281         default 0xffffffff
 282
 283 config ITCM_NR_PAGES
 284         int "Page count of ITCM size: NR*4KB"
 285         range 1 256
 286         default 32
 287
 288 config HAVE_DTCM
 289         bool "DTCM Support"
 290
 291 config DTCM_RAM_BASE
 292         hex "DTCM ram base"
 293         depends on HAVE_DTCM
 294         default 0xffffffff
 295
 296 config DTCM_NR_PAGES
 297         int "Page count of DTCM size: NR*4KB"
 298         depends on HAVE_DTCM
 299         range 1 256
 300         default 32
 301 endif
 302
 303 config CPU_HAS_VDSP
 304         bool "CPU has VDSP coprocessor"
 305         depends on CPU_HAS_FPU && CPU_HAS_FPUV2
 306
 307 config CPU_HAS_FPU
 308         bool "CPU has FPU coprocessor"
 309         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
 310
 311 config CPU_HAS_ICACHE_INS
 312         bool "CPU has Icache invalidate instructions"
 313         depends on CPU_HAS_CACHEV2
 314
 315 config CPU_HAS_TEE
 316         bool "CPU has Trusted Execution Environment"
 317         depends on CPU_CK810
 318
 319 config SMP
 320         bool "Symmetric Multi-Processing (SMP) support for C-SKY"
 321         depends on CPU_CK860
 322         default n
 323
 324 config NR_CPUS
 325         int "Maximum number of CPUs (2-32)"
 326         range 2 32
 327         depends on SMP
 328         default "4"
 329
 330 config HIGHMEM
 331         bool "High Memory Support"
 332         depends on !CPU_CK610
 333         select KMAP_LOCAL
 334         default y
 335
 336 config ARCH_FORCE_MAX_ORDER
 337         int "Maximum zone order"
 338         default "11"
 339
 340 config DRAM_BASE
 341         hex "DRAM start addr (the same with memory-section in dts)"
 342         default 0x0
 343
 344 config HOTPLUG_CPU
 345         bool "Support for hot-pluggable CPUs"
 346         select GENERIC_IRQ_MIGRATION
 347         depends on SMP
 348         help
 349           Say Y here to allow turning CPUs off and on. CPUs can be
 350           controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
 351
 352           Say N if you want to disable CPU hotplug.
 353
 354 config HAVE_EFFICIENT_UNALIGNED_STRING_OPS
 355         bool "Enable EFFICIENT_UNALIGNED_STRING_OPS for abiv2"
 356         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
 357         help
 358           Say Y here to enable EFFICIENT_UNALIGNED_STRING_OPS. Some CPU models could
 359           deal with unaligned access by hardware.
 360
 361 endmenu
 362
 363 source "arch/csky/Kconfig.platforms"
 364
 365 source "kernel/Kconfig.hz"