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
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 HANDLE_DOMAIN_IRQ
21 select DW_APB_TIMER_OF
22 select GENERIC_IOREMAP
23 select GENERIC_LIB_ASHLDI3
24 select GENERIC_LIB_ASHRDI3
25 select GENERIC_LIB_LSHRDI3
26 select GENERIC_LIB_MULDI3
27 select GENERIC_LIB_CMPDI2
28 select GENERIC_LIB_UCMPDI2
29 select GENERIC_ALLOCATOR
30 select GENERIC_ATOMIC64
31 select GENERIC_CPU_DEVICES
32 select GENERIC_IRQ_CHIP
33 select GENERIC_IRQ_PROBE
34 select GENERIC_IRQ_SHOW
35 select GENERIC_IRQ_MULTI_HANDLER
36 select GENERIC_SCHED_CLOCK
37 select GENERIC_SMP_IDLE_THREAD
38 select GENERIC_TIME_VSYSCALL
39 select GENERIC_VDSO_32
40 select GENERIC_GETTIMEOFDAY
41 select GX6605S_TIMER if CPU_CK610
42 select HAVE_ARCH_TRACEHOOK
43 select HAVE_ARCH_AUDITSYSCALL
44 select HAVE_ARCH_MMAP_RND_BITS
45 select HAVE_ARCH_SECCOMP_FILTER
46 select HAVE_CONTEXT_TRACKING
47 select HAVE_VIRT_CPU_ACCOUNTING_GEN
48 select HAVE_DEBUG_BUGVERBOSE
49 select HAVE_DEBUG_KMEMLEAK
50 select HAVE_DYNAMIC_FTRACE
51 select HAVE_DYNAMIC_FTRACE_WITH_REGS
52 select HAVE_GENERIC_VDSO
53 select HAVE_FUNCTION_TRACER
54 select HAVE_FUNCTION_GRAPH_TRACER
55 select HAVE_FUNCTION_ERROR_INJECTION
56 select HAVE_FUTEX_CMPXCHG if FUTEX && SMP
57 select HAVE_FTRACE_MCOUNT_RECORD
58 select HAVE_KERNEL_GZIP
59 select HAVE_KERNEL_LZO
60 select HAVE_KERNEL_LZMA
61 select HAVE_KPROBES if !CPU_CK610
62 select HAVE_KPROBES_ON_FTRACE if !CPU_CK610
63 select HAVE_KRETPROBES if !CPU_CK610
64 select HAVE_PERF_EVENTS
66 select HAVE_PERF_USER_STACK_DUMP
67 select HAVE_DMA_CONTIGUOUS
68 select HAVE_REGS_AND_STACK_ACCESS_API
70 select HAVE_STACKPROTECTOR
71 select HAVE_SYSCALL_TRACEPOINTS
72 select MAY_HAVE_SPARSE_IRQ
73 select MODULES_USE_ELF_RELA if MODULES
75 select OF_EARLY_FLATTREE
76 select PERF_USE_VMALLOC if CPU_CK610
79 select USB_ARCH_HAS_EHCI
80 select USB_ARCH_HAS_OHCI
81 select GENERIC_PCI_IOMAP
83 select PCI_DOMAINS_GENERIC if PCI
84 select PCI_SYSCALL if PCI
88 config LOCKDEP_SUPPORT
91 config ARCH_SUPPORTS_UPROBES
92 def_bool y if !CPU_CK610
94 config CPU_HAS_CACHEV2
106 config CPU_HAS_LDSTEX
109 For SMP, CPU needs "ldex&stex" instructions for atomic operations.
111 config CPU_NEED_TLBSYNC
114 config CPU_NEED_SOFTALIGN
117 config CPU_NO_USER_BKPT
120 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
121 abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
122 So we need a 16bit instruction as user space bkpt, and it will cause an illegal
123 instruction exception.
124 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
126 config GENERIC_CALIBRATE_DELAY
132 config GENERIC_HWEIGHT
138 config STACKTRACE_SUPPORT
144 config TRACE_IRQFLAGS_SUPPORT
149 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
150 default "1024" if (CPU_CK860)
154 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
155 default "12" if (CPU_CK860)
157 config L1_CACHE_SHIFT
159 default "4" if (CPU_CK610)
160 default "5" if (CPU_CK807 || CPU_CK810)
161 default "6" if (CPU_CK860)
163 config ARCH_MMAP_RND_BITS_MIN
166 # max bits determined by the following formula:
167 # VA_BITS - PAGE_SHIFT - 3
168 config ARCH_MMAP_RND_BITS_MAX
171 menu "Processor type and features"
178 bool "CSKY CPU ck610"
179 select CPU_NEED_TLBSYNC
180 select CPU_NEED_SOFTALIGN
181 select CPU_NO_USER_BKPT
184 bool "CSKY CPU ck810"
186 select CPU_NEED_TLBSYNC
189 bool "CSKY CPU ck807"
193 bool "CSKY CPU ck860"
195 select CPU_HAS_CACHEV2
196 select CPU_HAS_LDSTEX
202 default PAGE_OFFSET_80000000
204 config PAGE_OFFSET_80000000
205 bool "PAGE OFFSET 2G (user:kernel = 2:2)"
207 config PAGE_OFFSET_A0000000
208 bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
213 default 0x80000000 if PAGE_OFFSET_80000000
214 default 0xa0000000 if PAGE_OFFSET_A0000000
217 prompt "C-SKY PMU type"
218 depends on PERF_EVENTS
219 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
225 bool "Performance Monitoring Unit Ver.1"
230 prompt "Power Manager Instruction (wait/doze/stop)"
247 bool "Tightly-Coupled/Sram Memory"
248 select GENERIC_ALLOCATOR
250 The implementation are not only used by TCM (Tightly-Coupled Meory)
251 but also used by sram on SOC bus. It follow existed linux tcm
252 software interface, so that old tcm application codes could be
261 int "Page count of ITCM size: NR*4KB"
274 int "Page count of DTCM size: NR*4KB"
281 bool "CPU has VDSP coprocessor"
282 depends on CPU_HAS_FPU && CPU_HAS_FPUV2
285 bool "CPU has FPU coprocessor"
286 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
288 config CPU_HAS_ICACHE_INS
289 bool "CPU has Icache invalidate instructions"
290 depends on CPU_HAS_CACHEV2
293 bool "CPU has Trusted Execution Environment"
297 bool "Symmetric Multi-Processing (SMP) support for C-SKY"
302 int "Maximum number of CPUs (2-32)"
308 bool "High Memory Support"
309 depends on !CPU_CK610
313 config FORCE_MAX_ZONEORDER
314 int "Maximum zone order"
318 hex "DRAM start addr (the same with memory-section in dts)"
322 bool "Support for hot-pluggable CPUs"
323 select GENERIC_IRQ_MIGRATION
326 Say Y here to allow turning CPUs off and on. CPUs can be
327 controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
329 Say N if you want to disable CPU hotplug.
332 source "arch/csky/Kconfig.platforms"
334 source "kernel/Kconfig.hz"