1config CSKY 2 def_bool y 3 select ARCH_HAS_SYNC_DMA_FOR_CPU 4 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 5 select ARCH_USE_BUILTIN_BSWAP 6 select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2 7 select COMMON_CLK 8 select CLKSRC_MMIO 9 select CLKSRC_OF 10 select DMA_DIRECT_OPS 11 select DMA_NONCOHERENT_OPS 12 select IRQ_DOMAIN 13 select HANDLE_DOMAIN_IRQ 14 select DW_APB_TIMER_OF 15 select GENERIC_LIB_ASHLDI3 16 select GENERIC_LIB_ASHRDI3 17 select GENERIC_LIB_LSHRDI3 18 select GENERIC_LIB_MULDI3 19 select GENERIC_LIB_CMPDI2 20 select GENERIC_LIB_UCMPDI2 21 select GENERIC_ALLOCATOR 22 select GENERIC_ATOMIC64 23 select GENERIC_CLOCKEVENTS 24 select GENERIC_CPU_DEVICES 25 select GENERIC_IRQ_CHIP 26 select GENERIC_IRQ_PROBE 27 select GENERIC_IRQ_SHOW 28 select GENERIC_IRQ_MULTI_HANDLER 29 select GENERIC_SCHED_CLOCK 30 select GENERIC_SMP_IDLE_THREAD 31 select HAVE_ARCH_TRACEHOOK 32 select HAVE_GENERIC_DMA_COHERENT 33 select HAVE_KERNEL_GZIP 34 select HAVE_KERNEL_LZO 35 select HAVE_KERNEL_LZMA 36 select HAVE_C_RECORDMCOUNT 37 select HAVE_DMA_API_DEBUG 38 select HAVE_DMA_CONTIGUOUS 39 select HAVE_MEMBLOCK 40 select MAY_HAVE_SPARSE_IRQ 41 select MODULES_USE_ELF_RELA if MODULES 42 select NO_BOOTMEM 43 select OF 44 select OF_EARLY_FLATTREE 45 select OF_RESERVED_MEM 46 select PERF_USE_VMALLOC 47 select RTC_LIB 48 select TIMER_OF 49 select USB_ARCH_HAS_EHCI 50 select USB_ARCH_HAS_OHCI 51 52config CPU_HAS_CACHEV2 53 bool 54 55config CPU_HAS_FPUV2 56 bool 57 58config CPU_HAS_HILO 59 bool 60 61config CPU_HAS_TLBI 62 bool 63 64config CPU_HAS_LDSTEX 65 bool 66 help 67 For SMP, CPU needs "ldex&stex" instrcutions to atomic operations. 68 69config CPU_NEED_TLBSYNC 70 bool 71 72config CPU_NEED_SOFTALIGN 73 bool 74 75config CPU_NO_USER_BKPT 76 bool 77 help 78 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because 79 abiv2 is 16/32bit instruction set and "trap 1" is 32bit. 80 So we need a 16bit instruction as user space bkpt, and it will cause an illegal 81 instruction exception. 82 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not. 83 84config GENERIC_CALIBRATE_DELAY 85 def_bool y 86 87config GENERIC_CSUM 88 def_bool y 89 90config GENERIC_HWEIGHT 91 def_bool y 92 93config MMU 94 def_bool y 95 96config RWSEM_GENERIC_SPINLOCK 97 def_bool y 98 99config TIME_LOW_RES 100 def_bool y 101 102config TRACE_IRQFLAGS_SUPPORT 103 def_bool y 104 105config CPU_TLB_SIZE 106 int 107 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 108 default "1024" if (CPU_CK860) 109 110config CPU_ASID_BITS 111 int 112 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810) 113 default "12" if (CPU_CK860) 114 115config L1_CACHE_SHIFT 116 int 117 default "4" if (CPU_CK610) 118 default "5" if (CPU_CK807 || CPU_CK810) 119 default "6" if (CPU_CK860) 120 121menu "Processor type and features" 122 123choice 124 prompt "CPU MODEL" 125 default CPU_CK807 126 127config CPU_CK610 128 bool "CSKY CPU ck610" 129 select CPU_NEED_TLBSYNC 130 select CPU_NEED_SOFTALIGN 131 select CPU_NO_USER_BKPT 132 133config CPU_CK810 134 bool "CSKY CPU ck810" 135 select CPU_HAS_HILO 136 select CPU_NEED_TLBSYNC 137 138config CPU_CK807 139 bool "CSKY CPU ck807" 140 select CPU_HAS_HILO 141 142config CPU_CK860 143 bool "CSKY CPU ck860" 144 select CPU_HAS_TLBI 145 select CPU_HAS_CACHEV2 146 select CPU_HAS_LDSTEX 147 select CPU_HAS_FPUV2 148endchoice 149 150choice 151 prompt "Power Manager Instruction (wait/doze/stop)" 152 default CPU_PM_NONE 153 154config CPU_PM_NONE 155 bool "None" 156 157config CPU_PM_WAIT 158 bool "wait" 159 160config CPU_PM_DOZE 161 bool "doze" 162 163config CPU_PM_STOP 164 bool "stop" 165endchoice 166 167config CPU_HAS_VDSP 168 bool "CPU has VDSP coprocessor" 169 depends on CPU_HAS_FPU && CPU_HAS_FPUV2 170 171config CPU_HAS_FPU 172 bool "CPU has FPU coprocessor" 173 depends on CPU_CK807 || CPU_CK810 || CPU_CK860 174 175config CPU_HAS_TEE 176 bool "CPU has Trusted Execution Environment" 177 depends on CPU_CK810 178 179config SMP 180 bool "Symmetric Multi-Processing (SMP) support for C-SKY" 181 depends on CPU_CK860 182 default n 183 184config NR_CPUS 185 int "Maximum number of CPUs (2-32)" 186 range 2 32 187 depends on SMP 188 default "2" 189 190config HIGHMEM 191 bool "High Memory Support" 192 depends on !CPU_CK610 193 default y 194 195config FORCE_MAX_ZONEORDER 196 int "Maximum zone order" 197 default "11" 198 199config RAM_BASE 200 hex "DRAM start addr (the same with memory-section in dts)" 201 default 0x0 202 203endmenu 204 205source "kernel/Kconfig.hz" 206