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