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_SYNC_DMA_FOR_CPU
   7         select ARCH_HAS_SYNC_DMA_FOR_DEVICE
   8         select ARCH_USE_BUILTIN_BSWAP
   9         select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2
  10         select COMMON_CLK
  11         select CLKSRC_MMIO
  12         select CLKSRC_OF
  13         select DMA_DIRECT_REMAP
  14         select IRQ_DOMAIN
  15         select HANDLE_DOMAIN_IRQ
  16         select DW_APB_TIMER_OF
  17         select GENERIC_LIB_ASHLDI3
  18         select GENERIC_LIB_ASHRDI3
  19         select GENERIC_LIB_LSHRDI3
  20         select GENERIC_LIB_MULDI3
  21         select GENERIC_LIB_CMPDI2
  22         select GENERIC_LIB_UCMPDI2
  23         select GENERIC_ALLOCATOR
  24         select GENERIC_ATOMIC64
  25         select GENERIC_CLOCKEVENTS
  26         select GENERIC_CPU_DEVICES
  27         select GENERIC_IRQ_CHIP
  28         select GENERIC_IRQ_PROBE
  29         select GENERIC_IRQ_SHOW
  30         select GENERIC_IRQ_MULTI_HANDLER
  31         select GENERIC_SCHED_CLOCK
  32         select GENERIC_SMP_IDLE_THREAD
  33         select HAVE_ARCH_TRACEHOOK
  34         select HAVE_ARCH_AUDITSYSCALL
  35         select HAVE_DYNAMIC_FTRACE
  36         select HAVE_FUNCTION_TRACER
  37         select HAVE_FUNCTION_GRAPH_TRACER
  38         select HAVE_FTRACE_MCOUNT_RECORD
  39         select HAVE_KERNEL_GZIP
  40         select HAVE_KERNEL_LZO
  41         select HAVE_KERNEL_LZMA
  42         select HAVE_PERF_EVENTS
  43         select HAVE_PERF_REGS
  44         select HAVE_PERF_USER_STACK_DUMP
  45         select HAVE_DMA_API_DEBUG
  46         select HAVE_DMA_CONTIGUOUS
  47         select HAVE_SYSCALL_TRACEPOINTS
  48         select MAY_HAVE_SPARSE_IRQ
  49         select MODULES_USE_ELF_RELA if MODULES
  50         select OF
  51         select OF_EARLY_FLATTREE
  52         select PERF_USE_VMALLOC if CPU_CK610
  53         select RTC_LIB
  54         select TIMER_OF
  55         select USB_ARCH_HAS_EHCI
  56         select USB_ARCH_HAS_OHCI
  57
  58 config CPU_HAS_CACHEV2
  59         bool
  60
  61 config CPU_HAS_FPUV2
  62         bool
  63
  64 config CPU_HAS_HILO
  65         bool
  66
  67 config CPU_HAS_TLBI
  68         bool
  69
  70 config CPU_HAS_LDSTEX
  71         bool
  72         help
  73           For SMP, CPU needs "ldex&stex" instrcutions to atomic operations.
  74
  75 config CPU_NEED_TLBSYNC
  76         bool
  77
  78 config CPU_NEED_SOFTALIGN
  79         bool
  80
  81 config CPU_NO_USER_BKPT
  82         bool
  83         help
  84           For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
  85           abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
  86           So we need a 16bit instruction as user space bkpt, and it will cause an illegal
  87           instruction exception.
  88           In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
  89
  90 config GENERIC_CALIBRATE_DELAY
  91         def_bool y
  92
  93 config GENERIC_CSUM
  94         def_bool y
  95
  96 config GENERIC_HWEIGHT
  97         def_bool y
  98
  99 config MMU
 100         def_bool y
 101
 102 config STACKTRACE_SUPPORT
 103         def_bool y
 104
 105 config TIME_LOW_RES
 106         def_bool y
 107
 108 config TRACE_IRQFLAGS_SUPPORT
 109         def_bool y
 110
 111 config CPU_TLB_SIZE
 112         int
 113         default "128"   if (CPU_CK610 || CPU_CK807 || CPU_CK810)
 114         default "1024"  if (CPU_CK860)
 115
 116 config CPU_ASID_BITS
 117         int
 118         default "8"     if (CPU_CK610 || CPU_CK807 || CPU_CK810)
 119         default "12"    if (CPU_CK860)
 120
 121 config L1_CACHE_SHIFT
 122         int
 123         default "4"     if (CPU_CK610)
 124         default "5"     if (CPU_CK807 || CPU_CK810)
 125         default "6"     if (CPU_CK860)
 126
 127 menu "Processor type and features"
 128
 129 choice
 130         prompt "CPU MODEL"
 131         default CPU_CK807
 132
 133 config CPU_CK610
 134         bool "CSKY CPU ck610"
 135         select CPU_NEED_TLBSYNC
 136         select CPU_NEED_SOFTALIGN
 137         select CPU_NO_USER_BKPT
 138
 139 config CPU_CK810
 140         bool "CSKY CPU ck810"
 141         select CPU_HAS_HILO
 142         select CPU_NEED_TLBSYNC
 143
 144 config CPU_CK807
 145         bool "CSKY CPU ck807"
 146         select CPU_HAS_HILO
 147
 148 config CPU_CK860
 149         bool "CSKY CPU ck860"
 150         select CPU_HAS_TLBI
 151         select CPU_HAS_CACHEV2
 152         select CPU_HAS_LDSTEX
 153         select CPU_HAS_FPUV2
 154 endchoice
 155
 156 choice
 157         prompt "C-SKY PMU type"
 158         depends on PERF_EVENTS
 159         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
 160
 161 config CPU_PMU_NONE
 162         bool "None"
 163
 164 config CSKY_PMU_V1
 165         bool "Performance Monitoring Unit Ver.1"
 166
 167 endchoice
 168
 169 choice
 170         prompt "Power Manager Instruction (wait/doze/stop)"
 171         default CPU_PM_NONE
 172
 173 config CPU_PM_NONE
 174         bool "None"
 175
 176 config CPU_PM_WAIT
 177         bool "wait"
 178
 179 config CPU_PM_DOZE
 180         bool "doze"
 181
 182 config CPU_PM_STOP
 183         bool "stop"
 184 endchoice
 185
 186 config CPU_HAS_VDSP
 187         bool "CPU has VDSP coprocessor"
 188         depends on CPU_HAS_FPU && CPU_HAS_FPUV2
 189
 190 config CPU_HAS_FPU
 191         bool "CPU has FPU coprocessor"
 192         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
 193
 194 config CPU_HAS_TEE
 195         bool "CPU has Trusted Execution Environment"
 196         depends on CPU_CK810
 197
 198 config SMP
 199         bool "Symmetric Multi-Processing (SMP) support for C-SKY"
 200         depends on CPU_CK860
 201         default n
 202
 203 config NR_CPUS
 204         int "Maximum number of CPUs (2-32)"
 205         range 2 32
 206         depends on SMP
 207         default "2"
 208
 209 config HIGHMEM
 210         bool "High Memory Support"
 211         depends on !CPU_CK610
 212         default y
 213
 214 config FORCE_MAX_ZONEORDER
 215         int "Maximum zone order"
 216         default "11"
 217
 218 config RAM_BASE
 219         hex "DRAM start addr (the same with memory-section in dts)"
 220         default 0x0
 221
 222 config HOTPLUG_CPU
 223         bool "Support for hot-pluggable CPUs"
 224         select GENERIC_IRQ_MIGRATION
 225         depends on SMP
 226         help
 227           Say Y here to allow turning CPUs off and on. CPUs can be
 228           controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
 229
 230           Say N if you want to disable CPU hotplug.
 231 endmenu
 232
 233 source "kernel/Kconfig.hz"