ce0799077f3bcc0b607073843877c1465a92518a
[sfrench/cifs-2.6.git] / arch / csky / Kconfig
1 config CSKY
2         def_bool y
3         select ARCH_32BIT_OFF_T
4         select ARCH_HAS_DMA_PREP_COHERENT
5         select ARCH_HAS_SYNC_DMA_FOR_CPU
6         select ARCH_HAS_SYNC_DMA_FOR_DEVICE
7         select ARCH_USE_BUILTIN_BSWAP
8         select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2
9         select COMMON_CLK
10         select CLKSRC_MMIO
11         select CLKSRC_OF
12         select DMA_DIRECT_REMAP
13         select IRQ_DOMAIN
14         select HANDLE_DOMAIN_IRQ
15         select DW_APB_TIMER_OF
16         select GENERIC_LIB_ASHLDI3
17         select GENERIC_LIB_ASHRDI3
18         select GENERIC_LIB_LSHRDI3
19         select GENERIC_LIB_MULDI3
20         select GENERIC_LIB_CMPDI2
21         select GENERIC_LIB_UCMPDI2
22         select GENERIC_ALLOCATOR
23         select GENERIC_ATOMIC64
24         select GENERIC_CLOCKEVENTS
25         select GENERIC_CPU_DEVICES
26         select GENERIC_IRQ_CHIP
27         select GENERIC_IRQ_PROBE
28         select GENERIC_IRQ_SHOW
29         select GENERIC_IRQ_MULTI_HANDLER
30         select GENERIC_SCHED_CLOCK
31         select GENERIC_SMP_IDLE_THREAD
32         select HAVE_ARCH_TRACEHOOK
33         select HAVE_ARCH_AUDITSYSCALL
34         select HAVE_DYNAMIC_FTRACE
35         select HAVE_FUNCTION_TRACER
36         select HAVE_FUNCTION_GRAPH_TRACER
37         select HAVE_FTRACE_MCOUNT_RECORD
38         select HAVE_KERNEL_GZIP
39         select HAVE_KERNEL_LZO
40         select HAVE_KERNEL_LZMA
41         select HAVE_PERF_EVENTS
42         select HAVE_PERF_REGS
43         select HAVE_PERF_USER_STACK_DUMP
44         select HAVE_DMA_API_DEBUG
45         select HAVE_DMA_CONTIGUOUS
46         select HAVE_SYSCALL_TRACEPOINTS
47         select MAY_HAVE_SPARSE_IRQ
48         select MODULES_USE_ELF_RELA if MODULES
49         select OF
50         select OF_EARLY_FLATTREE
51         select PERF_USE_VMALLOC if CPU_CK610
52         select RTC_LIB
53         select TIMER_OF
54         select USB_ARCH_HAS_EHCI
55         select USB_ARCH_HAS_OHCI
56
57 config CPU_HAS_CACHEV2
58         bool
59
60 config CPU_HAS_FPUV2
61         bool
62
63 config CPU_HAS_HILO
64         bool
65
66 config CPU_HAS_TLBI
67         bool
68
69 config CPU_HAS_LDSTEX
70         bool
71         help
72           For SMP, CPU needs "ldex&stex" instrcutions to atomic operations.
73
74 config CPU_NEED_TLBSYNC
75         bool
76
77 config CPU_NEED_SOFTALIGN
78         bool
79
80 config CPU_NO_USER_BKPT
81         bool
82         help
83           For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
84           abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
85           So we need a 16bit instruction as user space bkpt, and it will cause an illegal
86           instruction exception.
87           In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
88
89 config GENERIC_CALIBRATE_DELAY
90         def_bool y
91
92 config GENERIC_CSUM
93         def_bool y
94
95 config GENERIC_HWEIGHT
96         def_bool y
97
98 config MMU
99         def_bool y
100
101 config STACKTRACE_SUPPORT
102         def_bool y
103
104 config TIME_LOW_RES
105         def_bool y
106
107 config TRACE_IRQFLAGS_SUPPORT
108         def_bool y
109
110 config CPU_TLB_SIZE
111         int
112         default "128"   if (CPU_CK610 || CPU_CK807 || CPU_CK810)
113         default "1024"  if (CPU_CK860)
114
115 config CPU_ASID_BITS
116         int
117         default "8"     if (CPU_CK610 || CPU_CK807 || CPU_CK810)
118         default "12"    if (CPU_CK860)
119
120 config L1_CACHE_SHIFT
121         int
122         default "4"     if (CPU_CK610)
123         default "5"     if (CPU_CK807 || CPU_CK810)
124         default "6"     if (CPU_CK860)
125
126 menu "Processor type and features"
127
128 choice
129         prompt "CPU MODEL"
130         default CPU_CK807
131
132 config CPU_CK610
133         bool "CSKY CPU ck610"
134         select CPU_NEED_TLBSYNC
135         select CPU_NEED_SOFTALIGN
136         select CPU_NO_USER_BKPT
137
138 config CPU_CK810
139         bool "CSKY CPU ck810"
140         select CPU_HAS_HILO
141         select CPU_NEED_TLBSYNC
142
143 config CPU_CK807
144         bool "CSKY CPU ck807"
145         select CPU_HAS_HILO
146
147 config CPU_CK860
148         bool "CSKY CPU ck860"
149         select CPU_HAS_TLBI
150         select CPU_HAS_CACHEV2
151         select CPU_HAS_LDSTEX
152         select CPU_HAS_FPUV2
153 endchoice
154
155 choice
156         prompt "C-SKY PMU type"
157         depends on PERF_EVENTS
158         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
159
160 config CPU_PMU_NONE
161         bool "None"
162
163 config CSKY_PMU_V1
164         bool "Performance Monitoring Unit Ver.1"
165
166 endchoice
167
168 choice
169         prompt "Power Manager Instruction (wait/doze/stop)"
170         default CPU_PM_NONE
171
172 config CPU_PM_NONE
173         bool "None"
174
175 config CPU_PM_WAIT
176         bool "wait"
177
178 config CPU_PM_DOZE
179         bool "doze"
180
181 config CPU_PM_STOP
182         bool "stop"
183 endchoice
184
185 config CPU_HAS_VDSP
186         bool "CPU has VDSP coprocessor"
187         depends on CPU_HAS_FPU && CPU_HAS_FPUV2
188
189 config CPU_HAS_FPU
190         bool "CPU has FPU coprocessor"
191         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
192
193 config CPU_HAS_TEE
194         bool "CPU has Trusted Execution Environment"
195         depends on CPU_CK810
196
197 config SMP
198         bool "Symmetric Multi-Processing (SMP) support for C-SKY"
199         depends on CPU_CK860
200         default n
201
202 config NR_CPUS
203         int "Maximum number of CPUs (2-32)"
204         range 2 32
205         depends on SMP
206         default "2"
207
208 config HIGHMEM
209         bool "High Memory Support"
210         depends on !CPU_CK610
211         default y
212
213 config FORCE_MAX_ZONEORDER
214         int "Maximum zone order"
215         default "11"
216
217 config RAM_BASE
218         hex "DRAM start addr (the same with memory-section in dts)"
219         default 0x0
220
221 config HOTPLUG_CPU
222         bool "Support for hot-pluggable CPUs"
223         select GENERIC_IRQ_MIGRATION
224         depends on SMP
225         help
226           Say Y here to allow turning CPUs off and on. CPUs can be
227           controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
228
229           Say N if you want to disable CPU hotplug.
230 endmenu
231
232 source "kernel/Kconfig.hz"