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 MAY_HAVE_SPARSE_IRQ
 100         select MODULES_USE_ELF_RELA if MODULES
 101         select OF
 102         select OF_EARLY_FLATTREE
 103         select PERF_USE_VMALLOC if CPU_CK610
 104         select RTC_LIB
 105         select TIMER_OF
 106         select GENERIC_PCI_IOMAP
 107         select HAVE_PCI
 108         select PCI_DOMAINS_GENERIC if PCI
 109         select PCI_SYSCALL if PCI
 110         select PCI_MSI if PCI
 111         select TRACE_IRQFLAGS_SUPPORT
 112
 113 config LOCKDEP_SUPPORT
 114         def_bool y
 115
 116 config ARCH_SUPPORTS_UPROBES
 117         def_bool y if !CPU_CK610
 118
 119 config CPU_HAS_CACHEV2
 120         bool
 121
 122 config CPU_HAS_FPUV2
 123         bool
 124
 125 config CPU_HAS_HILO
 126         bool
 127
 128 config CPU_HAS_TLBI
 129         bool
 130
 131 config CPU_HAS_LDSTEX
 132         bool
 133         help
 134           For SMP, CPU needs "ldex&stex" instructions for atomic operations.
 135
 136 config CPU_NEED_TLBSYNC
 137         bool
 138
 139 config CPU_NEED_SOFTALIGN
 140         bool
 141
 142 config CPU_NO_USER_BKPT
 143         bool
 144         help
 145           For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
 146           abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
 147           So we need a 16bit instruction as user space bkpt, and it will cause an illegal
 148           instruction exception.
 149           In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
 150
 151 config GENERIC_CALIBRATE_DELAY
 152         def_bool y
 153
 154 config GENERIC_CSUM
 155         def_bool y
 156
 157 config GENERIC_HWEIGHT
 158         def_bool y
 159
 160 config MMU
 161         def_bool y
 162
 163 config STACKTRACE_SUPPORT
 164         def_bool y
 165
 166 config TIME_LOW_RES
 167         def_bool y
 168
 169 config CPU_TLB_SIZE
 170         int
 171         default "128"   if (CPU_CK610 || CPU_CK807 || CPU_CK810)
 172         default "1024"  if (CPU_CK860)
 173
 174 config CPU_ASID_BITS
 175         int
 176         default "8"     if (CPU_CK610 || CPU_CK807 || CPU_CK810)
 177         default "12"    if (CPU_CK860)
 178
 179 config L1_CACHE_SHIFT
 180         int
 181         default "4"     if (CPU_CK610)
 182         default "5"     if (CPU_CK807 || CPU_CK810)
 183         default "6"     if (CPU_CK860)
 184
 185 config ARCH_MMAP_RND_BITS_MIN
 186         default 8
 187
 188 # max bits determined by the following formula:
 189 #  VA_BITS - PAGE_SHIFT - 3
 190 config ARCH_MMAP_RND_BITS_MAX
 191         default 17
 192
 193 menu "Processor type and features"
 194
 195 choice
 196         prompt "CPU MODEL"
 197         default CPU_CK807
 198
 199 config CPU_CK610
 200         bool "CSKY CPU ck610"
 201         select CPU_NEED_TLBSYNC
 202         select CPU_NEED_SOFTALIGN
 203         select CPU_NO_USER_BKPT
 204
 205 config CPU_CK810
 206         bool "CSKY CPU ck810"
 207         select CPU_HAS_HILO
 208         select CPU_NEED_TLBSYNC
 209
 210 config CPU_CK807
 211         bool "CSKY CPU ck807"
 212         select CPU_HAS_HILO
 213
 214 config CPU_CK860
 215         bool "CSKY CPU ck860"
 216         select CPU_HAS_TLBI
 217         select CPU_HAS_CACHEV2
 218         select CPU_HAS_LDSTEX
 219         select CPU_HAS_FPUV2
 220 endchoice
 221
 222 choice
 223         prompt "PAGE OFFSET"
 224         default PAGE_OFFSET_80000000
 225
 226 config PAGE_OFFSET_80000000
 227         bool "PAGE OFFSET 2G (user:kernel = 2:2)"
 228
 229 config PAGE_OFFSET_A0000000
 230         bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
 231 endchoice
 232
 233 config PAGE_OFFSET
 234         hex
 235         default 0x80000000 if PAGE_OFFSET_80000000
 236         default 0xa0000000 if PAGE_OFFSET_A0000000
 237 choice
 238
 239         prompt "C-SKY PMU type"
 240         depends on PERF_EVENTS
 241         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
 242
 243 config CPU_PMU_NONE
 244         bool "None"
 245
 246 config CSKY_PMU_V1
 247         bool "Performance Monitoring Unit Ver.1"
 248
 249 endchoice
 250
 251 choice
 252         prompt "Power Manager Instruction (wait/doze/stop)"
 253         default CPU_PM_NONE
 254
 255 config CPU_PM_NONE
 256         bool "None"
 257
 258 config CPU_PM_WAIT
 259         bool "wait"
 260
 261 config CPU_PM_DOZE
 262         bool "doze"
 263
 264 config CPU_PM_STOP
 265         bool "stop"
 266 endchoice
 267
 268 menuconfig HAVE_TCM
 269         bool "Tightly-Coupled/Sram Memory"
 270         depends on !COMPILE_TEST
 271         help
 272           The implementation are not only used by TCM (Tightly-Coupled Meory)
 273           but also used by sram on SOC bus. It follow existed linux tcm
 274           software interface, so that old tcm application codes could be
 275           re-used directly.
 276
 277 if HAVE_TCM
 278 config ITCM_RAM_BASE
 279         hex "ITCM ram base"
 280         default 0xffffffff
 281
 282 config ITCM_NR_PAGES
 283         int "Page count of ITCM size: NR*4KB"
 284         range 1 256
 285         default 32
 286
 287 config HAVE_DTCM
 288         bool "DTCM Support"
 289
 290 config DTCM_RAM_BASE
 291         hex "DTCM ram base"
 292         depends on HAVE_DTCM
 293         default 0xffffffff
 294
 295 config DTCM_NR_PAGES
 296         int "Page count of DTCM size: NR*4KB"
 297         depends on HAVE_DTCM
 298         range 1 256
 299         default 32
 300 endif
 301
 302 config CPU_HAS_VDSP
 303         bool "CPU has VDSP coprocessor"
 304         depends on CPU_HAS_FPU && CPU_HAS_FPUV2
 305
 306 config CPU_HAS_FPU
 307         bool "CPU has FPU coprocessor"
 308         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
 309
 310 config CPU_HAS_ICACHE_INS
 311         bool "CPU has Icache invalidate instructions"
 312         depends on CPU_HAS_CACHEV2
 313
 314 config CPU_HAS_TEE
 315         bool "CPU has Trusted Execution Environment"
 316         depends on CPU_CK810
 317
 318 config SMP
 319         bool "Symmetric Multi-Processing (SMP) support for C-SKY"
 320         depends on CPU_CK860
 321         default n
 322
 323 config NR_CPUS
 324         int "Maximum number of CPUs (2-32)"
 325         range 2 32
 326         depends on SMP
 327         default "4"
 328
 329 config HIGHMEM
 330         bool "High Memory Support"
 331         depends on !CPU_CK610
 332         select KMAP_LOCAL
 333         default y
 334
 335 config FORCE_MAX_ZONEORDER
 336         int "Maximum zone order"
 337         default "11"
 338
 339 config DRAM_BASE
 340         hex "DRAM start addr (the same with memory-section in dts)"
 341         default 0x0
 342
 343 config HOTPLUG_CPU
 344         bool "Support for hot-pluggable CPUs"
 345         select GENERIC_IRQ_MIGRATION
 346         depends on SMP
 347         help
 348           Say Y here to allow turning CPUs off and on. CPUs can be
 349           controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
 350
 351           Say N if you want to disable CPU hotplug.
 352
 353 config HAVE_EFFICIENT_UNALIGNED_STRING_OPS
 354         bool "Enable EFFICIENT_UNALIGNED_STRING_OPS for abiv2"
 355         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
 356         help
 357           Say Y here to enable EFFICIENT_UNALIGNED_STRING_OPS. Some CPU models could
 358           deal with unaligned access by hardware.
 359
 360 endmenu
 361
 362 source "arch/csky/Kconfig.platforms"
 363
 364 source "kernel/Kconfig.hz"