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