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 DMA_DIRECT_REMAP
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
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
51 select OF_EARLY_FLATTREE
52 select PERF_USE_VMALLOC if CPU_CK610
55 select USB_ARCH_HAS_EHCI
56 select USB_ARCH_HAS_OHCI
58 config CPU_HAS_CACHEV2
73 For SMP, CPU needs "ldex&stex" instrcutions to atomic operations.
75 config CPU_NEED_TLBSYNC
78 config CPU_NEED_SOFTALIGN
81 config CPU_NO_USER_BKPT
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.
90 config GENERIC_CALIBRATE_DELAY
96 config GENERIC_HWEIGHT
102 config STACKTRACE_SUPPORT
108 config TRACE_IRQFLAGS_SUPPORT
113 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
114 default "1024" if (CPU_CK860)
118 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
119 default "12" if (CPU_CK860)
121 config L1_CACHE_SHIFT
123 default "4" if (CPU_CK610)
124 default "5" if (CPU_CK807 || CPU_CK810)
125 default "6" if (CPU_CK860)
127 menu "Processor type and features"
134 bool "CSKY CPU ck610"
135 select CPU_NEED_TLBSYNC
136 select CPU_NEED_SOFTALIGN
137 select CPU_NO_USER_BKPT
140 bool "CSKY CPU ck810"
142 select CPU_NEED_TLBSYNC
145 bool "CSKY CPU ck807"
149 bool "CSKY CPU ck860"
151 select CPU_HAS_CACHEV2
152 select CPU_HAS_LDSTEX
157 prompt "C-SKY PMU type"
158 depends on PERF_EVENTS
159 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
165 bool "Performance Monitoring Unit Ver.1"
170 prompt "Power Manager Instruction (wait/doze/stop)"
187 bool "CPU has VDSP coprocessor"
188 depends on CPU_HAS_FPU && CPU_HAS_FPUV2
191 bool "CPU has FPU coprocessor"
192 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
195 bool "CPU has Trusted Execution Environment"
199 bool "Symmetric Multi-Processing (SMP) support for C-SKY"
204 int "Maximum number of CPUs (2-32)"
210 bool "High Memory Support"
211 depends on !CPU_CK610
214 config FORCE_MAX_ZONEORDER
215 int "Maximum zone order"
219 hex "DRAM start addr (the same with memory-section in dts)"
223 bool "Support for hot-pluggable CPUs"
224 select GENERIC_IRQ_MIGRATION
227 Say Y here to allow turning CPUs off and on. CPUs can be
228 controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
230 Say N if you want to disable CPU hotplug.
233 source "kernel/Kconfig.hz"