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_USE_QUEUED_SPINLOCKS
 12	select ARCH_HAS_CURRENT_STACK_POINTER
 13	select ARCH_INLINE_READ_LOCK if !PREEMPTION
 14	select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION
 15	select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION
 16	select ARCH_INLINE_READ_LOCK_IRQSAVE if !PREEMPTION
 17	select ARCH_INLINE_READ_UNLOCK if !PREEMPTION
 18	select ARCH_INLINE_READ_UNLOCK_BH if !PREEMPTION
 19	select ARCH_INLINE_READ_UNLOCK_IRQ if !PREEMPTION
 20	select ARCH_INLINE_READ_UNLOCK_IRQRESTORE if !PREEMPTION
 21	select ARCH_INLINE_WRITE_LOCK if !PREEMPTION
 22	select ARCH_INLINE_WRITE_LOCK_BH if !PREEMPTION
 23	select ARCH_INLINE_WRITE_LOCK_IRQ if !PREEMPTION
 24	select ARCH_INLINE_WRITE_LOCK_IRQSAVE if !PREEMPTION
 25	select ARCH_INLINE_WRITE_UNLOCK if !PREEMPTION
 26	select ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPTION
 27	select ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPTION
 28	select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPTION
 29	select ARCH_INLINE_SPIN_TRYLOCK if !PREEMPTION
 30	select ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPTION
 31	select ARCH_INLINE_SPIN_LOCK if !PREEMPTION
 32	select ARCH_INLINE_SPIN_LOCK_BH if !PREEMPTION
 33	select ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPTION
 34	select ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPTION
 35	select ARCH_INLINE_SPIN_UNLOCK if !PREEMPTION
 36	select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION
 37	select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION
 38	select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION
 39	select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace)
 40	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
 41	select COMMON_CLK
 42	select CLKSRC_MMIO
 43	select CSKY_MPINTC if CPU_CK860
 44	select CSKY_MP_TIMER if CPU_CK860
 45	select CSKY_APB_INTC
 46	select DMA_DIRECT_REMAP
 47	select IRQ_DOMAIN
 48	select DW_APB_TIMER_OF
 49	select GENERIC_IOREMAP
 50	select GENERIC_LIB_ASHLDI3
 51	select GENERIC_LIB_ASHRDI3
 52	select GENERIC_LIB_LSHRDI3
 53	select GENERIC_LIB_MULDI3
 54	select GENERIC_LIB_CMPDI2
 55	select GENERIC_LIB_UCMPDI2
 56	select GENERIC_ALLOCATOR
 57	select GENERIC_ATOMIC64
 58	select GENERIC_CPU_DEVICES
 59	select GENERIC_IRQ_CHIP
 60	select GENERIC_IRQ_PROBE
 61	select GENERIC_IRQ_SHOW
 62	select GENERIC_IRQ_MULTI_HANDLER
 63	select GENERIC_SCHED_CLOCK
 64	select GENERIC_SMP_IDLE_THREAD
 65	select GENERIC_TIME_VSYSCALL
 66	select GENERIC_VDSO_32
 67	select GENERIC_GETTIMEOFDAY
 68	select GX6605S_TIMER if CPU_CK610
 69	select HAVE_ARCH_TRACEHOOK
 70	select HAVE_ARCH_AUDITSYSCALL
 71	select HAVE_ARCH_JUMP_LABEL if !CPU_CK610
 72	select HAVE_ARCH_JUMP_LABEL_RELATIVE
 73	select HAVE_ARCH_MMAP_RND_BITS
 74	select HAVE_ARCH_SECCOMP_FILTER
 75	select HAVE_CONTEXT_TRACKING_USER
 76	select HAVE_VIRT_CPU_ACCOUNTING_GEN
 77	select HAVE_DEBUG_BUGVERBOSE
 78	select HAVE_DEBUG_KMEMLEAK
 79	select HAVE_DYNAMIC_FTRACE
 80	select HAVE_DYNAMIC_FTRACE_WITH_REGS
 81	select HAVE_GENERIC_VDSO
 82	select HAVE_FUNCTION_TRACER
 83	select HAVE_FUNCTION_GRAPH_TRACER
 84	select HAVE_FUNCTION_ERROR_INJECTION
 85	select HAVE_FTRACE_MCOUNT_RECORD
 86	select HAVE_KERNEL_GZIP
 87	select HAVE_KERNEL_LZO
 88	select HAVE_KERNEL_LZMA
 89	select HAVE_KPROBES if !CPU_CK610
 90	select HAVE_KPROBES_ON_FTRACE if !CPU_CK610
 91	select HAVE_KRETPROBES if !CPU_CK610
 92	select HAVE_PERF_EVENTS
 93	select HAVE_PERF_REGS
 94	select HAVE_PERF_USER_STACK_DUMP
 95	select HAVE_DMA_CONTIGUOUS
 96	select HAVE_REGS_AND_STACK_ACCESS_API
 97	select HAVE_STACKPROTECTOR
 98	select HAVE_SYSCALL_TRACEPOINTS
 99	select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
100	select LOCK_MM_AND_FIND_VMA
101	select MAY_HAVE_SPARSE_IRQ
102	select MODULES_USE_ELF_RELA if MODULES
103	select OF
104	select OF_EARLY_FLATTREE
105	select PERF_USE_VMALLOC if CPU_CK610
106	select RTC_LIB
107	select TIMER_OF
108	select GENERIC_PCI_IOMAP
109	select HAVE_PCI
110	select PCI_DOMAINS_GENERIC if PCI
111	select PCI_SYSCALL if PCI
112	select PCI_MSI if PCI
113	select TRACE_IRQFLAGS_SUPPORT
114
115config LOCKDEP_SUPPORT
116	def_bool y
117
118config ARCH_SUPPORTS_UPROBES
119	def_bool y if !CPU_CK610
120
121config CPU_HAS_CACHEV2
122	bool
123
124config CPU_HAS_FPUV2
125	bool
126
127config CPU_HAS_HILO
128	bool
129
130config CPU_HAS_TLBI
131	bool
132
133config CPU_HAS_LDSTEX
134	bool
135	help
136	  For SMP, CPU needs "ldex&stex" instructions for atomic operations.
137
138config CPU_NEED_TLBSYNC
139	bool
140
141config CPU_NEED_SOFTALIGN
142	bool
143
144config CPU_NO_USER_BKPT
145	bool
146	help
147	  For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
148	  abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
149	  So we need a 16bit instruction as user space bkpt, and it will cause an illegal
150	  instruction exception.
151	  In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
152
153config GENERIC_CALIBRATE_DELAY
154	def_bool y
155
156config GENERIC_CSUM
157	def_bool y
158
159config GENERIC_HWEIGHT
160	def_bool y
161
162config MMU
163	def_bool y
164
165config STACKTRACE_SUPPORT
166	def_bool y
167
168config TIME_LOW_RES
169	def_bool y
170
171config CPU_ASID_BITS
172	int
173	default "8"	if (CPU_CK610 || CPU_CK807 || CPU_CK810)
174	default "12"	if (CPU_CK860)
175
176config L1_CACHE_SHIFT
177	int
178	default "4"	if (CPU_CK610)
179	default "5"	if (CPU_CK807 || CPU_CK810)
180	default "6"	if (CPU_CK860)
181
182config ARCH_MMAP_RND_BITS_MIN
183	default 8
184
185# max bits determined by the following formula:
186#  VA_BITS - PAGE_SHIFT - 3
187config ARCH_MMAP_RND_BITS_MAX
188	default 17
189
190menu "Processor type and features"
191
192choice
193	prompt "CPU MODEL"
194	default CPU_CK807
195
196config CPU_CK610
197	bool "CSKY CPU ck610"
198	select CPU_NEED_TLBSYNC
199	select CPU_NEED_SOFTALIGN
200	select CPU_NO_USER_BKPT
201
202config CPU_CK810
203	bool "CSKY CPU ck810"
204	select CPU_HAS_HILO
205	select CPU_NEED_TLBSYNC
206
207config CPU_CK807
208	bool "CSKY CPU ck807"
209	select CPU_HAS_HILO
210
211config CPU_CK860
212	bool "CSKY CPU ck860"
213	select CPU_HAS_TLBI
214	select CPU_HAS_CACHEV2
215	select CPU_HAS_LDSTEX
216	select CPU_HAS_FPUV2
217endchoice
218
219choice
220	prompt "PAGE OFFSET"
221	default PAGE_OFFSET_80000000
222
223config PAGE_OFFSET_80000000
224	bool "PAGE OFFSET 2G (user:kernel = 2:2)"
225
226config PAGE_OFFSET_A0000000
227	bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
228endchoice
229
230config PAGE_OFFSET
231	hex
232	default 0x80000000 if PAGE_OFFSET_80000000
233	default 0xa0000000 if PAGE_OFFSET_A0000000
234choice
235
236	prompt "C-SKY PMU type"
237	depends on PERF_EVENTS
238	depends on CPU_CK807 || CPU_CK810 || CPU_CK860
239
240config CPU_PMU_NONE
241	bool "None"
242
243config CSKY_PMU_V1
244	bool "Performance Monitoring Unit Ver.1"
245
246endchoice
247
248choice
249	prompt "Power Manager Instruction (wait/doze/stop)"
250	default CPU_PM_NONE
251
252config CPU_PM_NONE
253	bool "None"
254
255config CPU_PM_WAIT
256	bool "wait"
257
258config CPU_PM_DOZE
259	bool "doze"
260
261config CPU_PM_STOP
262	bool "stop"
263endchoice
264
265menuconfig HAVE_TCM
266	bool "Tightly-Coupled/Sram Memory"
267	depends on !COMPILE_TEST
268	help
269	  The implementation are not only used by TCM (Tightly-Coupled Memory)
270	  but also used by sram on SOC bus. It follow existed linux tcm
271	  software interface, so that old tcm application codes could be
272	  re-used directly.
273
274if HAVE_TCM
275config ITCM_RAM_BASE
276	hex "ITCM ram base"
277	default 0xffffffff
278
279config ITCM_NR_PAGES
280	int "Page count of ITCM size: NR*4KB"
281	range 1 256
282	default 32
283
284config HAVE_DTCM
285	bool "DTCM Support"
286
287config DTCM_RAM_BASE
288	hex "DTCM ram base"
289	depends on HAVE_DTCM
290	default 0xffffffff
291
292config DTCM_NR_PAGES
293	int "Page count of DTCM size: NR*4KB"
294	depends on HAVE_DTCM
295	range 1 256
296	default 32
297endif
298
299config CPU_HAS_VDSP
300	bool "CPU has VDSP coprocessor"
301	depends on CPU_HAS_FPU && CPU_HAS_FPUV2
302
303config CPU_HAS_FPU
304	bool "CPU has FPU coprocessor"
305	depends on CPU_CK807 || CPU_CK810 || CPU_CK860
306
307config CPU_HAS_ICACHE_INS
308	bool "CPU has Icache invalidate instructions"
309	depends on CPU_HAS_CACHEV2
310
311config CPU_HAS_TEE
312	bool "CPU has Trusted Execution Environment"
313	depends on CPU_CK810
314
315config SMP
316	bool "Symmetric Multi-Processing (SMP) support for C-SKY"
317	depends on CPU_CK860
318	default n
319
320config NR_CPUS
321	int "Maximum number of CPUs (2-32)"
322	range 2 32
323	depends on SMP
324	default "4"
325
326config HIGHMEM
327	bool "High Memory Support"
328	depends on !CPU_CK610
329	select KMAP_LOCAL
330	default y
331
332config DRAM_BASE
333	hex "DRAM start addr (the same with memory-section in dts)"
334	default 0x0
335
336config HOTPLUG_CPU
337	bool "Support for hot-pluggable CPUs"
338	select GENERIC_IRQ_MIGRATION
339	depends on SMP
340	help
341	  Say Y here to allow turning CPUs off and on. CPUs can be
342	  controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
343
344	  Say N if you want to disable CPU hotplug.
345
346config HAVE_EFFICIENT_UNALIGNED_STRING_OPS
347	bool "Enable EFFICIENT_UNALIGNED_STRING_OPS for abiv2"
348	depends on CPU_CK807 || CPU_CK810 || CPU_CK860
349	help
350	  Say Y here to enable EFFICIENT_UNALIGNED_STRING_OPS. Some CPU models could
351	  deal with unaligned access by hardware.
352
353endmenu
354
355source "arch/csky/Kconfig.platforms"
356
357source "kernel/Kconfig.hz"