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_GCOV_PROFILE_ALL
7 select ARCH_HAS_SYNC_DMA_FOR_CPU
8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
9 select ARCH_USE_BUILTIN_BSWAP
10 select ARCH_USE_QUEUED_RWLOCKS
11 select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace)
12 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
15 select CSKY_MPINTC if CPU_CK860
16 select CSKY_MP_TIMER if CPU_CK860
18 select DMA_DIRECT_REMAP
20 select DW_APB_TIMER_OF
21 select GENERIC_IOREMAP
22 select GENERIC_LIB_ASHLDI3
23 select GENERIC_LIB_ASHRDI3
24 select GENERIC_LIB_LSHRDI3
25 select GENERIC_LIB_MULDI3
26 select GENERIC_LIB_CMPDI2
27 select GENERIC_LIB_UCMPDI2
28 select GENERIC_ALLOCATOR
29 select GENERIC_ATOMIC64
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 GENERIC_TIME_VSYSCALL
38 select GENERIC_VDSO_32
39 select GENERIC_GETTIMEOFDAY
40 select GX6605S_TIMER if CPU_CK610
41 select HAVE_ARCH_TRACEHOOK
42 select HAVE_ARCH_AUDITSYSCALL
43 select HAVE_ARCH_MMAP_RND_BITS
44 select HAVE_ARCH_SECCOMP_FILTER
45 select HAVE_CONTEXT_TRACKING
46 select HAVE_VIRT_CPU_ACCOUNTING_GEN
47 select HAVE_DEBUG_BUGVERBOSE
48 select HAVE_DEBUG_KMEMLEAK
49 select HAVE_DYNAMIC_FTRACE
50 select HAVE_DYNAMIC_FTRACE_WITH_REGS
51 select HAVE_GENERIC_VDSO
52 select HAVE_FUNCTION_TRACER
53 select HAVE_FUNCTION_GRAPH_TRACER
54 select HAVE_FUNCTION_ERROR_INJECTION
55 select HAVE_FTRACE_MCOUNT_RECORD
56 select HAVE_KERNEL_GZIP
57 select HAVE_KERNEL_LZO
58 select HAVE_KERNEL_LZMA
59 select HAVE_KPROBES if !CPU_CK610
60 select HAVE_KPROBES_ON_FTRACE if !CPU_CK610
61 select HAVE_KRETPROBES if !CPU_CK610
62 select HAVE_PERF_EVENTS
64 select HAVE_PERF_USER_STACK_DUMP
65 select HAVE_DMA_CONTIGUOUS
66 select HAVE_REGS_AND_STACK_ACCESS_API
68 select HAVE_STACKPROTECTOR
69 select HAVE_SYSCALL_TRACEPOINTS
70 select MAY_HAVE_SPARSE_IRQ
71 select MODULES_USE_ELF_RELA if MODULES
73 select OF_EARLY_FLATTREE
74 select PERF_USE_VMALLOC if CPU_CK610
77 select GENERIC_PCI_IOMAP
79 select PCI_DOMAINS_GENERIC if PCI
80 select PCI_SYSCALL if PCI
83 select TRACE_IRQFLAGS_SUPPORT
85 config LOCKDEP_SUPPORT
88 config ARCH_SUPPORTS_UPROBES
89 def_bool y if !CPU_CK610
91 config CPU_HAS_CACHEV2
103 config CPU_HAS_LDSTEX
106 For SMP, CPU needs "ldex&stex" instructions for atomic operations.
108 config CPU_NEED_TLBSYNC
111 config CPU_NEED_SOFTALIGN
114 config CPU_NO_USER_BKPT
117 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
118 abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
119 So we need a 16bit instruction as user space bkpt, and it will cause an illegal
120 instruction exception.
121 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
123 config GENERIC_CALIBRATE_DELAY
129 config GENERIC_HWEIGHT
135 config STACKTRACE_SUPPORT
143 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
144 default "1024" if (CPU_CK860)
148 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
149 default "12" if (CPU_CK860)
151 config L1_CACHE_SHIFT
153 default "4" if (CPU_CK610)
154 default "5" if (CPU_CK807 || CPU_CK810)
155 default "6" if (CPU_CK860)
157 config ARCH_MMAP_RND_BITS_MIN
160 # max bits determined by the following formula:
161 # VA_BITS - PAGE_SHIFT - 3
162 config ARCH_MMAP_RND_BITS_MAX
165 menu "Processor type and features"
172 bool "CSKY CPU ck610"
173 select CPU_NEED_TLBSYNC
174 select CPU_NEED_SOFTALIGN
175 select CPU_NO_USER_BKPT
178 bool "CSKY CPU ck810"
180 select CPU_NEED_TLBSYNC
183 bool "CSKY CPU ck807"
187 bool "CSKY CPU ck860"
189 select CPU_HAS_CACHEV2
190 select CPU_HAS_LDSTEX
196 default PAGE_OFFSET_80000000
198 config PAGE_OFFSET_80000000
199 bool "PAGE OFFSET 2G (user:kernel = 2:2)"
201 config PAGE_OFFSET_A0000000
202 bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
207 default 0x80000000 if PAGE_OFFSET_80000000
208 default 0xa0000000 if PAGE_OFFSET_A0000000
211 prompt "C-SKY PMU type"
212 depends on PERF_EVENTS
213 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
219 bool "Performance Monitoring Unit Ver.1"
224 prompt "Power Manager Instruction (wait/doze/stop)"
241 bool "Tightly-Coupled/Sram Memory"
242 depends on !COMPILE_TEST
244 The implementation are not only used by TCM (Tightly-Coupled Meory)
245 but also used by sram on SOC bus. It follow existed linux tcm
246 software interface, so that old tcm application codes could be
255 int "Page count of ITCM size: NR*4KB"
268 int "Page count of DTCM size: NR*4KB"
275 bool "CPU has VDSP coprocessor"
276 depends on CPU_HAS_FPU && CPU_HAS_FPUV2
279 bool "CPU has FPU coprocessor"
280 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
282 config CPU_HAS_ICACHE_INS
283 bool "CPU has Icache invalidate instructions"
284 depends on CPU_HAS_CACHEV2
287 bool "CPU has Trusted Execution Environment"
291 bool "Symmetric Multi-Processing (SMP) support for C-SKY"
296 int "Maximum number of CPUs (2-32)"
302 bool "High Memory Support"
303 depends on !CPU_CK610
307 config FORCE_MAX_ZONEORDER
308 int "Maximum zone order"
312 hex "DRAM start addr (the same with memory-section in dts)"
316 bool "Support for hot-pluggable CPUs"
317 select GENERIC_IRQ_MIGRATION
320 Say Y here to allow turning CPUs off and on. CPUs can be
321 controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
323 Say N if you want to disable CPU hotplug.
326 source "arch/csky/Kconfig.platforms"
328 source "kernel/Kconfig.hz"