1
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 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
65 select HAVE_PERF_REGS
66 select HAVE_PERF_USER_STACK_DUMP
67 select HAVE_DMA_CONTIGUOUS
68 select HAVE_REGS_AND_STACK_ACCESS_API
69 select HAVE_RSEQ
70 select HAVE_STACKPROTECTOR
71 select HAVE_SYSCALL_TRACEPOINTS
72 select MAY_HAVE_SPARSE_IRQ
73 select MODULES_USE_ELF_RELA if MODULES
74 select OF
75 select OF_EARLY_FLATTREE
76 select PERF_USE_VMALLOC if CPU_CK610
77 select RTC_LIB
78 select TIMER_OF
79 select GENERIC_PCI_IOMAP
80 select HAVE_PCI
81 select PCI_DOMAINS_GENERIC if PCI
82 select PCI_SYSCALL if PCI
83 select PCI_MSI if PCI
84 select SET_FS
85 select TRACE_IRQFLAGS_SUPPORT
86
87config LOCKDEP_SUPPORT
88 def_bool y
89
90config ARCH_SUPPORTS_UPROBES
91 def_bool y if !CPU_CK610
92
93config CPU_HAS_CACHEV2
94 bool
95
96config CPU_HAS_FPUV2
97 bool
98
99config CPU_HAS_HILO
100 bool
101
102config CPU_HAS_TLBI
103 bool
104
105config CPU_HAS_LDSTEX
106 bool
107 help
108 For SMP, CPU needs "ldex&stex" instructions for atomic operations.
109
110config CPU_NEED_TLBSYNC
111 bool
112
113config CPU_NEED_SOFTALIGN
114 bool
115
116config CPU_NO_USER_BKPT
117 bool
118 help
119 For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
120 abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
121 So we need a 16bit instruction as user space bkpt, and it will cause an illegal
122 instruction exception.
123 In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
124
125config GENERIC_CALIBRATE_DELAY
126 def_bool y
127
128config GENERIC_CSUM
129 def_bool y
130
131config GENERIC_HWEIGHT
132 def_bool y
133
134config MMU
135 def_bool y
136
137config STACKTRACE_SUPPORT
138 def_bool y
139
140config TIME_LOW_RES
141 def_bool y
142
143config CPU_TLB_SIZE
144 int
145 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
146 default "1024" if (CPU_CK860)
147
148config CPU_ASID_BITS
149 int
150 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
151 default "12" if (CPU_CK860)
152
153config L1_CACHE_SHIFT
154 int
155 default "4" if (CPU_CK610)
156 default "5" if (CPU_CK807 || CPU_CK810)
157 default "6" if (CPU_CK860)
158
159config ARCH_MMAP_RND_BITS_MIN
160 default 8
161
162
163
164config ARCH_MMAP_RND_BITS_MAX
165 default 17
166
167menu "Processor type and features"
168
169choice
170 prompt "CPU MODEL"
171 default CPU_CK807
172
173config CPU_CK610
174 bool "CSKY CPU ck610"
175 select CPU_NEED_TLBSYNC
176 select CPU_NEED_SOFTALIGN
177 select CPU_NO_USER_BKPT
178
179config CPU_CK810
180 bool "CSKY CPU ck810"
181 select CPU_HAS_HILO
182 select CPU_NEED_TLBSYNC
183
184config CPU_CK807
185 bool "CSKY CPU ck807"
186 select CPU_HAS_HILO
187
188config CPU_CK860
189 bool "CSKY CPU ck860"
190 select CPU_HAS_TLBI
191 select CPU_HAS_CACHEV2
192 select CPU_HAS_LDSTEX
193 select CPU_HAS_FPUV2
194endchoice
195
196choice
197 prompt "PAGE OFFSET"
198 default PAGE_OFFSET_80000000
199
200config PAGE_OFFSET_80000000
201 bool "PAGE OFFSET 2G (user:kernel = 2:2)"
202
203config PAGE_OFFSET_A0000000
204 bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
205endchoice
206
207config PAGE_OFFSET
208 hex
209 default 0x80000000 if PAGE_OFFSET_80000000
210 default 0xa0000000 if PAGE_OFFSET_A0000000
211choice
212
213 prompt "C-SKY PMU type"
214 depends on PERF_EVENTS
215 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
216
217config CPU_PMU_NONE
218 bool "None"
219
220config CSKY_PMU_V1
221 bool "Performance Monitoring Unit Ver.1"
222
223endchoice
224
225choice
226 prompt "Power Manager Instruction (wait/doze/stop)"
227 default CPU_PM_NONE
228
229config CPU_PM_NONE
230 bool "None"
231
232config CPU_PM_WAIT
233 bool "wait"
234
235config CPU_PM_DOZE
236 bool "doze"
237
238config CPU_PM_STOP
239 bool "stop"
240endchoice
241
242menuconfig HAVE_TCM
243 bool "Tightly-Coupled/Sram Memory"
244 depends on !COMPILE_TEST
245 help
246 The implementation are not only used by TCM (Tightly-Coupled Meory)
247 but also used by sram on SOC bus. It follow existed linux tcm
248 software interface, so that old tcm application codes could be
249 re-used directly.
250
251if HAVE_TCM
252config ITCM_RAM_BASE
253 hex "ITCM ram base"
254 default 0xffffffff
255
256config ITCM_NR_PAGES
257 int "Page count of ITCM size: NR*4KB"
258 range 1 256
259 default 32
260
261config HAVE_DTCM
262 bool "DTCM Support"
263
264config DTCM_RAM_BASE
265 hex "DTCM ram base"
266 depends on HAVE_DTCM
267 default 0xffffffff
268
269config DTCM_NR_PAGES
270 int "Page count of DTCM size: NR*4KB"
271 depends on HAVE_DTCM
272 range 1 256
273 default 32
274endif
275
276config CPU_HAS_VDSP
277 bool "CPU has VDSP coprocessor"
278 depends on CPU_HAS_FPU && CPU_HAS_FPUV2
279
280config CPU_HAS_FPU
281 bool "CPU has FPU coprocessor"
282 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
283
284config CPU_HAS_ICACHE_INS
285 bool "CPU has Icache invalidate instructions"
286 depends on CPU_HAS_CACHEV2
287
288config CPU_HAS_TEE
289 bool "CPU has Trusted Execution Environment"
290 depends on CPU_CK810
291
292config SMP
293 bool "Symmetric Multi-Processing (SMP) support for C-SKY"
294 depends on CPU_CK860
295 default n
296
297config NR_CPUS
298 int "Maximum number of CPUs (2-32)"
299 range 2 32
300 depends on SMP
301 default "4"
302
303config HIGHMEM
304 bool "High Memory Support"
305 depends on !CPU_CK610
306 select KMAP_LOCAL
307 default y
308
309config FORCE_MAX_ZONEORDER
310 int "Maximum zone order"
311 default "11"
312
313config DRAM_BASE
314 hex "DRAM start addr (the same with memory-section in dts)"
315 default 0x0
316
317config HOTPLUG_CPU
318 bool "Support for hot-pluggable CPUs"
319 select GENERIC_IRQ_MIGRATION
320 depends on SMP
321 help
322 Say Y here to allow turning CPUs off and on. CPUs can be
323 controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
324
325 Say N if you want to disable CPU hotplug.
326endmenu
327
328source "arch/csky/Kconfig.platforms"
329
330source "kernel/Kconfig.hz"
331
