1 # SPDX-License-Identifier: GPL-2.0-only
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
13 select CSKY_MPINTC if CPU_CK860
14 select CSKY_MP_TIMER if CPU_CK860
16 select DMA_DIRECT_REMAP
18 select HANDLE_DOMAIN_IRQ
19 select DW_APB_TIMER_OF
20 select GENERIC_LIB_ASHLDI3
21 select GENERIC_LIB_ASHRDI3
22 select GENERIC_LIB_LSHRDI3
23 select GENERIC_LIB_MULDI3
24 select GENERIC_LIB_CMPDI2
25 select GENERIC_LIB_UCMPDI2
26 select GENERIC_ALLOCATOR
27 select GENERIC_ATOMIC64
28 select GENERIC_CLOCKEVENTS
29 select GENERIC_CPU_DEVICES
30 select GENERIC_IRQ_CHIP
31 select GENERIC_IRQ_PROBE
32 select GENERIC_IRQ_SHOW
33 select GENERIC_IRQ_MULTI_HANDLER
34 select GENERIC_SCHED_CLOCK
35 select GENERIC_SMP_IDLE_THREAD
36 select GX6605S_TIMER if CPU_CK610
37 select HAVE_ARCH_TRACEHOOK
38 select HAVE_ARCH_AUDITSYSCALL
39 select HAVE_DYNAMIC_FTRACE
40 select HAVE_FUNCTION_TRACER
41 select HAVE_FUNCTION_GRAPH_TRACER
42 select HAVE_FTRACE_MCOUNT_RECORD
43 select HAVE_KERNEL_GZIP
44 select HAVE_KERNEL_LZO
45 select HAVE_KERNEL_LZMA
46 select HAVE_PERF_EVENTS
48 select HAVE_PERF_USER_STACK_DUMP
49 select HAVE_DMA_API_DEBUG
50 select HAVE_DMA_CONTIGUOUS
51 select HAVE_SYSCALL_TRACEPOINTS
52 select MAY_HAVE_SPARSE_IRQ
53 select MODULES_USE_ELF_RELA if MODULES
55 select OF_EARLY_FLATTREE
56 select PERF_USE_VMALLOC if CPU_CK610
59 select USB_ARCH_HAS_EHCI
60 select USB_ARCH_HAS_OHCI
62 config CPU_HAS_CACHEV2
77 For SMP, CPU needs "ldex&stex" instrcutions to atomic operations.
79 config CPU_NEED_TLBSYNC
82 config CPU_NEED_SOFTALIGN
85 config CPU_NO_USER_BKPT
88 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
89 abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
90 So we need a 16bit instruction as user space bkpt, and it will cause an illegal
91 instruction exception.
92 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
94 config GENERIC_CALIBRATE_DELAY
100 config GENERIC_HWEIGHT
106 config STACKTRACE_SUPPORT
112 config TRACE_IRQFLAGS_SUPPORT
117 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
118 default "1024" if (CPU_CK860)
122 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
123 default "12" if (CPU_CK860)
125 config L1_CACHE_SHIFT
127 default "4" if (CPU_CK610)
128 default "5" if (CPU_CK807 || CPU_CK810)
129 default "6" if (CPU_CK860)
131 menu "Processor type and features"
138 bool "CSKY CPU ck610"
139 select CPU_NEED_TLBSYNC
140 select CPU_NEED_SOFTALIGN
141 select CPU_NO_USER_BKPT
144 bool "CSKY CPU ck810"
146 select CPU_NEED_TLBSYNC
149 bool "CSKY CPU ck807"
153 bool "CSKY CPU ck860"
155 select CPU_HAS_CACHEV2
156 select CPU_HAS_LDSTEX
161 prompt "C-SKY PMU type"
162 depends on PERF_EVENTS
163 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
169 bool "Performance Monitoring Unit Ver.1"
174 prompt "Power Manager Instruction (wait/doze/stop)"
191 bool "CPU has VDSP coprocessor"
192 depends on CPU_HAS_FPU && CPU_HAS_FPUV2
195 bool "CPU has FPU coprocessor"
196 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
199 bool "CPU has Trusted Execution Environment"
203 bool "Symmetric Multi-Processing (SMP) support for C-SKY"
208 int "Maximum number of CPUs (2-32)"
214 bool "High Memory Support"
215 depends on !CPU_CK610
218 config FORCE_MAX_ZONEORDER
219 int "Maximum zone order"
223 hex "DRAM start addr (the same with memory-section in dts)"
227 bool "Support for hot-pluggable CPUs"
228 select GENERIC_IRQ_MIGRATION
231 Say Y here to allow turning CPUs off and on. CPUs can be
232 controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
234 Say N if you want to disable CPU hotplug.
237 source "kernel/Kconfig.hz"