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 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
63 select HAVE_PERF_REGS
64 select HAVE_PERF_USER_STACK_DUMP
65 select HAVE_DMA_CONTIGUOUS
66 select HAVE_REGS_AND_STACK_ACCESS_API
67 select HAVE_RSEQ
68 select HAVE_STACKPROTECTOR
69 select HAVE_SYSCALL_TRACEPOINTS
70 select MAY_HAVE_SPARSE_IRQ
71 select MODULES_USE_ELF_RELA if MODULES
72 select OF
73 select OF_EARLY_FLATTREE
74 select PERF_USE_VMALLOC if CPU_CK610
75 select RTC_LIB
76 select TIMER_OF
77 select GENERIC_PCI_IOMAP
78 select HAVE_PCI
79 select PCI_DOMAINS_GENERIC if PCI
80 select PCI_SYSCALL if PCI
81 select PCI_MSI if PCI
82 select SET_FS
83 select TRACE_IRQFLAGS_SUPPORT
84
85config LOCKDEP_SUPPORT
86 def_bool y
87
88config ARCH_SUPPORTS_UPROBES
89 def_bool y if !CPU_CK610
90
91config CPU_HAS_CACHEV2
92 bool
93
94config CPU_HAS_FPUV2
95 bool
96
97config CPU_HAS_HILO
98 bool
99
100config CPU_HAS_TLBI
101 bool
102
103config CPU_HAS_LDSTEX
104 bool
105 help
106 For SMP, CPU needs "ldex&stex" instructions for atomic operations.
107
108config CPU_NEED_TLBSYNC
109 bool
110
111config CPU_NEED_SOFTALIGN
112 bool
113
114config CPU_NO_USER_BKPT
115 bool
116 help
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.
122
123config GENERIC_CALIBRATE_DELAY
124 def_bool y
125
126config GENERIC_CSUM
127 def_bool y
128
129config GENERIC_HWEIGHT
130 def_bool y
131
132config MMU
133 def_bool y
134
135config STACKTRACE_SUPPORT
136 def_bool y
137
138config TIME_LOW_RES
139 def_bool y
140
141config CPU_TLB_SIZE
142 int
143 default "128" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
144 default "1024" if (CPU_CK860)
145
146config CPU_ASID_BITS
147 int
148 default "8" if (CPU_CK610 || CPU_CK807 || CPU_CK810)
149 default "12" if (CPU_CK860)
150
151config L1_CACHE_SHIFT
152 int
153 default "4" if (CPU_CK610)
154 default "5" if (CPU_CK807 || CPU_CK810)
155 default "6" if (CPU_CK860)
156
157config ARCH_MMAP_RND_BITS_MIN
158 default 8
159
160
161
162config ARCH_MMAP_RND_BITS_MAX
163 default 17
164
165menu "Processor type and features"
166
167choice
168 prompt "CPU MODEL"
169 default CPU_CK807
170
171config CPU_CK610
172 bool "CSKY CPU ck610"
173 select CPU_NEED_TLBSYNC
174 select CPU_NEED_SOFTALIGN
175 select CPU_NO_USER_BKPT
176
177config CPU_CK810
178 bool "CSKY CPU ck810"
179 select CPU_HAS_HILO
180 select CPU_NEED_TLBSYNC
181
182config CPU_CK807
183 bool "CSKY CPU ck807"
184 select CPU_HAS_HILO
185
186config CPU_CK860
187 bool "CSKY CPU ck860"
188 select CPU_HAS_TLBI
189 select CPU_HAS_CACHEV2
190 select CPU_HAS_LDSTEX
191 select CPU_HAS_FPUV2
192endchoice
193
194choice
195 prompt "PAGE OFFSET"
196 default PAGE_OFFSET_80000000
197
198config PAGE_OFFSET_80000000
199 bool "PAGE OFFSET 2G (user:kernel = 2:2)"
200
201config PAGE_OFFSET_A0000000
202 bool "PAGE OFFSET 2.5G (user:kernel = 2.5:1.5)"
203endchoice
204
205config PAGE_OFFSET
206 hex
207 default 0x80000000 if PAGE_OFFSET_80000000
208 default 0xa0000000 if PAGE_OFFSET_A0000000
209choice
210
211 prompt "C-SKY PMU type"
212 depends on PERF_EVENTS
213 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
214
215config CPU_PMU_NONE
216 bool "None"
217
218config CSKY_PMU_V1
219 bool "Performance Monitoring Unit Ver.1"
220
221endchoice
222
223choice
224 prompt "Power Manager Instruction (wait/doze/stop)"
225 default CPU_PM_NONE
226
227config CPU_PM_NONE
228 bool "None"
229
230config CPU_PM_WAIT
231 bool "wait"
232
233config CPU_PM_DOZE
234 bool "doze"
235
236config CPU_PM_STOP
237 bool "stop"
238endchoice
239
240menuconfig HAVE_TCM
241 bool "Tightly-Coupled/Sram Memory"
242 depends on !COMPILE_TEST
243 help
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
247 re-used directly.
248
249if HAVE_TCM
250config ITCM_RAM_BASE
251 hex "ITCM ram base"
252 default 0xffffffff
253
254config ITCM_NR_PAGES
255 int "Page count of ITCM size: NR*4KB"
256 range 1 256
257 default 32
258
259config HAVE_DTCM
260 bool "DTCM Support"
261
262config DTCM_RAM_BASE
263 hex "DTCM ram base"
264 depends on HAVE_DTCM
265 default 0xffffffff
266
267config DTCM_NR_PAGES
268 int "Page count of DTCM size: NR*4KB"
269 depends on HAVE_DTCM
270 range 1 256
271 default 32
272endif
273
274config CPU_HAS_VDSP
275 bool "CPU has VDSP coprocessor"
276 depends on CPU_HAS_FPU && CPU_HAS_FPUV2
277
278config CPU_HAS_FPU
279 bool "CPU has FPU coprocessor"
280 depends on CPU_CK807 || CPU_CK810 || CPU_CK860
281
282config CPU_HAS_ICACHE_INS
283 bool "CPU has Icache invalidate instructions"
284 depends on CPU_HAS_CACHEV2
285
286config CPU_HAS_TEE
287 bool "CPU has Trusted Execution Environment"
288 depends on CPU_CK810
289
290config SMP
291 bool "Symmetric Multi-Processing (SMP) support for C-SKY"
292 depends on CPU_CK860
293 default n
294
295config NR_CPUS
296 int "Maximum number of CPUs (2-32)"
297 range 2 32
298 depends on SMP
299 default "4"
300
301config HIGHMEM
302 bool "High Memory Support"
303 depends on !CPU_CK610
304 select KMAP_LOCAL
305 default y
306
307config FORCE_MAX_ZONEORDER
308 int "Maximum zone order"
309 default "11"
310
311config DRAM_BASE
312 hex "DRAM start addr (the same with memory-section in dts)"
313 default 0x0
314
315config HOTPLUG_CPU
316 bool "Support for hot-pluggable CPUs"
317 select GENERIC_IRQ_MIGRATION
318 depends on SMP
319 help
320 Say Y here to allow turning CPUs off and on. CPUs can be
321 controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
322
323 Say N if you want to disable CPU hotplug.
324endmenu
325
326source "arch/csky/Kconfig.platforms"
327
328source "kernel/Kconfig.hz"
329
