1# SPDX-License-Identifier: GPL-2.0-only
2config CSKY
3	def_bool y
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
13	select COMMON_CLK
14	select CLKSRC_MMIO
15	select CSKY_MPINTC if CPU_CK860
16	select CSKY_MP_TIMER if CPU_CK860
17	select CSKY_APB_INTC
18	select DMA_DIRECT_REMAP
19	select IRQ_DOMAIN
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_FUTEX_CMPXCHG if FUTEX && SMP
56	select HAVE_FTRACE_MCOUNT_RECORD
57	select HAVE_KERNEL_GZIP
58	select HAVE_KERNEL_LZO
59	select HAVE_KERNEL_LZMA
60	select HAVE_KPROBES if !CPU_CK610
61	select HAVE_KPROBES_ON_FTRACE if !CPU_CK610
62	select HAVE_KRETPROBES if !CPU_CK610
63	select HAVE_PERF_EVENTS
64	select HAVE_PERF_REGS
65	select HAVE_PERF_USER_STACK_DUMP
66	select HAVE_DMA_CONTIGUOUS
67	select HAVE_REGS_AND_STACK_ACCESS_API
68	select HAVE_RSEQ
69	select HAVE_STACKPROTECTOR
70	select HAVE_SYSCALL_TRACEPOINTS
71	select MAY_HAVE_SPARSE_IRQ
72	select MODULES_USE_ELF_RELA if MODULES
73	select OF
74	select OF_EARLY_FLATTREE
75	select PERF_USE_VMALLOC if CPU_CK610
76	select RTC_LIB
77	select TIMER_OF
78	select GENERIC_PCI_IOMAP
79	select HAVE_PCI
80	select PCI_DOMAINS_GENERIC if PCI
81	select PCI_SYSCALL if PCI
82	select PCI_MSI if PCI
83	select SET_FS
84	select TRACE_IRQFLAGS_SUPPORT
85
86config LOCKDEP_SUPPORT
87	def_bool y
88
89config ARCH_SUPPORTS_UPROBES
90	def_bool y if !CPU_CK610
91
92config CPU_HAS_CACHEV2
93	bool
94
95config CPU_HAS_FPUV2
96	bool
97
98config CPU_HAS_HILO
99	bool
100
101config CPU_HAS_TLBI
102	bool
103
104config CPU_HAS_LDSTEX
105	bool
106	help
107	  For SMP, CPU needs "ldex&stex" instructions for atomic operations.
108
109config CPU_NEED_TLBSYNC
110	bool
111
112config CPU_NEED_SOFTALIGN
113	bool
114
115config CPU_NO_USER_BKPT
116	bool
117	help
118	  For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
119	  abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
120	  So we need a 16bit instruction as user space bkpt, and it will cause an illegal
121	  instruction exception.
122	  In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
123
124config GENERIC_CALIBRATE_DELAY
125	def_bool y
126
127config GENERIC_CSUM
128	def_bool y
129
130config GENERIC_HWEIGHT
131	def_bool y
132
133config MMU
134	def_bool y
135
136config STACKTRACE_SUPPORT
137	def_bool y
138
139config TIME_LOW_RES
140	def_bool y
141
142config CPU_TLB_SIZE
143	int
144	default "128"	if (CPU_CK610 || CPU_CK807 || CPU_CK810)
145	default "1024"	if (CPU_CK860)
146
147config CPU_ASID_BITS
148	int
149	default "8"	if (CPU_CK610 || CPU_CK807 || CPU_CK810)
150	default "12"	if (CPU_CK860)
151
152config L1_CACHE_SHIFT
153	int
154	default "4"	if (CPU_CK610)
155	default "5"	if (CPU_CK807 || CPU_CK810)
156	default "6"	if (CPU_CK860)
157
158config ARCH_MMAP_RND_BITS_MIN
159	default 8
160
161# max bits determined by the following formula:
162#  VA_BITS - PAGE_SHIFT - 3
163config ARCH_MMAP_RND_BITS_MAX
164	default 17
165
166menu "Processor type and features"
167
168choice
169	prompt "CPU MODEL"
170	default CPU_CK807
171
172config CPU_CK610
173	bool "CSKY CPU ck610"
174	select CPU_NEED_TLBSYNC
175	select CPU_NEED_SOFTALIGN
176	select CPU_NO_USER_BKPT
177
178config CPU_CK810
179	bool "CSKY CPU ck810"
180	select CPU_HAS_HILO
181	select CPU_NEED_TLBSYNC
182
183config CPU_CK807
184	bool "CSKY CPU ck807"
185	select CPU_HAS_HILO
186
187config CPU_CK860
188	bool "CSKY CPU ck860"
189	select CPU_HAS_TLBI
190	select CPU_HAS_CACHEV2
191	select CPU_HAS_LDSTEX
192	select CPU_HAS_FPUV2
193endchoice
194
195choice
196	prompt "PAGE OFFSET"
197	default PAGE_OFFSET_80000000
198
199config PAGE_OFFSET_80000000
200	bool "PAGE OFFSET 2G (user:kernel = 2:2)"
201
202config PAGE_OFFSET_A0000000
203	bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
204endchoice
205
206config PAGE_OFFSET
207	hex
208	default 0x80000000 if PAGE_OFFSET_80000000
209	default 0xa0000000 if PAGE_OFFSET_A0000000
210choice
211
212	prompt "C-SKY PMU type"
213	depends on PERF_EVENTS
214	depends on CPU_CK807 || CPU_CK810 || CPU_CK860
215
216config CPU_PMU_NONE
217	bool "None"
218
219config CSKY_PMU_V1
220	bool "Performance Monitoring Unit Ver.1"
221
222endchoice
223
224choice
225	prompt "Power Manager Instruction (wait/doze/stop)"
226	default CPU_PM_NONE
227
228config CPU_PM_NONE
229	bool "None"
230
231config CPU_PM_WAIT
232	bool "wait"
233
234config CPU_PM_DOZE
235	bool "doze"
236
237config CPU_PM_STOP
238	bool "stop"
239endchoice
240
241menuconfig HAVE_TCM
242	bool "Tightly-Coupled/Sram Memory"
243	depends on !COMPILE_TEST
244	help
245	  The implementation are not only used by TCM (Tightly-Coupled Meory)
246	  but also used by sram on SOC bus. It follow existed linux tcm
247	  software interface, so that old tcm application codes could be
248	  re-used directly.
249
250if HAVE_TCM
251config ITCM_RAM_BASE
252	hex "ITCM ram base"
253	default 0xffffffff
254
255config ITCM_NR_PAGES
256	int "Page count of ITCM size: NR*4KB"
257	range 1 256
258	default 32
259
260config HAVE_DTCM
261	bool "DTCM Support"
262
263config DTCM_RAM_BASE
264	hex "DTCM ram base"
265	depends on HAVE_DTCM
266	default 0xffffffff
267
268config DTCM_NR_PAGES
269	int "Page count of DTCM size: NR*4KB"
270	depends on HAVE_DTCM
271	range 1 256
272	default 32
273endif
274
275config CPU_HAS_VDSP
276	bool "CPU has VDSP coprocessor"
277	depends on CPU_HAS_FPU && CPU_HAS_FPUV2
278
279config CPU_HAS_FPU
280	bool "CPU has FPU coprocessor"
281	depends on CPU_CK807 || CPU_CK810 || CPU_CK860
282
283config CPU_HAS_ICACHE_INS
284	bool "CPU has Icache invalidate instructions"
285	depends on CPU_HAS_CACHEV2
286
287config CPU_HAS_TEE
288	bool "CPU has Trusted Execution Environment"
289	depends on CPU_CK810
290
291config SMP
292	bool "Symmetric Multi-Processing (SMP) support for C-SKY"
293	depends on CPU_CK860
294	default n
295
296config NR_CPUS
297	int "Maximum number of CPUs (2-32)"
298	range 2 32
299	depends on SMP
300	default "4"
301
302config HIGHMEM
303	bool "High Memory Support"
304	depends on !CPU_CK610
305	select KMAP_LOCAL
306	default y
307
308config FORCE_MAX_ZONEORDER
309	int "Maximum zone order"
310	default "11"
311
312config DRAM_BASE
313	hex "DRAM start addr (the same with memory-section in dts)"
314	default 0x0
315
316config HOTPLUG_CPU
317	bool "Support for hot-pluggable CPUs"
318	select GENERIC_IRQ_MIGRATION
319	depends on SMP
320	help
321	  Say Y here to allow turning CPUs off and on. CPUs can be
322	  controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
323
324	  Say N if you want to disable CPU hotplug.
325endmenu
326
327source "arch/csky/Kconfig.platforms"
328
329source "kernel/Kconfig.hz"
330