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_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_DYNAMIC_FTRACE
41 select HAVE_FUNCTION_TRACER
42 select HAVE_FUNCTION_GRAPH_TRACER
43 select HAVE_FTRACE_MCOUNT_RECORD
44 select HAVE_KERNEL_GZIP
45 select HAVE_KERNEL_LZO
46 select HAVE_KERNEL_LZMA
47 select HAVE_PERF_EVENTS
49 select HAVE_PERF_USER_STACK_DUMP
50 select HAVE_DMA_API_DEBUG
51 select HAVE_DMA_CONTIGUOUS
52 select HAVE_STACKPROTECTOR
53 select HAVE_SYSCALL_TRACEPOINTS
54 select MAY_HAVE_SPARSE_IRQ
55 select MODULES_USE_ELF_RELA if MODULES
57 select OF_EARLY_FLATTREE
58 select PERF_USE_VMALLOC if CPU_CK610
61 select USB_ARCH_HAS_EHCI
62 select USB_ARCH_HAS_OHCI
64 config CPU_HAS_CACHEV2
79 For SMP, CPU needs "ldex&stex" instrcutions to atomic operations.
81 config CPU_NEED_TLBSYNC
84 config CPU_NEED_SOFTALIGN
87 config CPU_NO_USER_BKPT
90 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
91 abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
92 So we need a 16bit instruction as user space bkpt, and it will cause an illegal
93 instruction exception.
94 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
96 config GENERIC_CALIBRATE_DELAY
102 config GENERIC_HWEIGHT
108 config STACKTRACE_SUPPORT
114 config TRACE_IRQFLAGS_SUPPORT
119 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
120 default "1024" if (CPU_CK860)
124 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
125 default "12" if (CPU_CK860)
127 config L1_CACHE_SHIFT
129 default "4" if (CPU_CK610)
130 default "5" if (CPU_CK807 || CPU_CK810)
131 default "6" if (CPU_CK860)
133 menu "Processor type and features"
140 bool "CSKY CPU ck610"
141 select CPU_NEED_TLBSYNC
142 select CPU_NEED_SOFTALIGN
143 select CPU_NO_USER_BKPT
146 bool "CSKY CPU ck810"
148 select CPU_NEED_TLBSYNC
151 bool "CSKY CPU ck807"
155 bool "CSKY CPU ck860"
157 select CPU_HAS_CACHEV2
158 select CPU_HAS_LDSTEX
163 prompt "C-SKY PMU type"
164 depends on PERF_EVENTS
165 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
171 bool "Performance Monitoring Unit Ver.1"
176 prompt "Power Manager Instruction (wait/doze/stop)"
193 bool "CPU has VDSP coprocessor"
194 depends on CPU_HAS_FPU && CPU_HAS_FPUV2
197 bool "CPU has FPU coprocessor"
198 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
201 bool "CPU has Trusted Execution Environment"
205 bool "Symmetric Multi-Processing (SMP) support for C-SKY"
210 int "Maximum number of CPUs (2-32)"
216 bool "High Memory Support"
217 depends on !CPU_CK610
220 config FORCE_MAX_ZONEORDER
221 int "Maximum zone order"
225 hex "DRAM start addr (the same with memory-section in dts)"
229 bool "Support for hot-pluggable CPUs"
230 select GENERIC_IRQ_MIGRATION
233 Say Y here to allow turning CPUs off and on. CPUs can be
234 controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
236 Say N if you want to disable CPU hotplug.
239 source "kernel/Kconfig.hz"