treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / arch / csky / Kconfig
blobda09c884cc305f20ba912c3b1ecd3b9ea54f8bbc
1 # SPDX-License-Identifier: GPL-2.0-only
2 config CSKY
3         def_bool y
4         select ARCH_32BIT_OFF_T
5         select ARCH_HAS_DMA_PREP_COHERENT
6         select ARCH_HAS_SYNC_DMA_FOR_CPU
7         select ARCH_HAS_SYNC_DMA_FOR_DEVICE
8         select ARCH_USE_BUILTIN_BSWAP
9         select ARCH_USE_QUEUED_RWLOCKS if NR_CPUS>2
10         select COMMON_CLK
11         select CLKSRC_MMIO
12         select CLKSRC_OF
13         select CSKY_MPINTC if CPU_CK860
14         select CSKY_MP_TIMER if CPU_CK860
15         select CSKY_APB_INTC
16         select DMA_DIRECT_REMAP
17         select IRQ_DOMAIN
18         select HANDLE_DOMAIN_IRQ
19         select DW_APB_TIMER_OF
20         select GENERIC_IOREMAP
21         select GENERIC_LIB_ASHLDI3
22         select GENERIC_LIB_ASHRDI3
23         select GENERIC_LIB_LSHRDI3
24         select GENERIC_LIB_MULDI3
25         select GENERIC_LIB_CMPDI2
26         select GENERIC_LIB_UCMPDI2
27         select GENERIC_ALLOCATOR
28         select GENERIC_ATOMIC64
29         select GENERIC_CLOCKEVENTS
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 GX6605S_TIMER if CPU_CK610
38         select HAVE_ARCH_TRACEHOOK
39         select HAVE_ARCH_AUDITSYSCALL
40         select HAVE_DYNAMIC_FTRACE
41         select HAVE_FUNCTION_TRACER
42         select HAVE_FUNCTION_GRAPH_TRACER
43         select HAVE_FTRACE_MCOUNT_RECORD
44         select HAVE_KERNEL_GZIP
45         select HAVE_KERNEL_LZO
46         select HAVE_KERNEL_LZMA
47         select HAVE_PERF_EVENTS
48         select HAVE_PERF_REGS
49         select HAVE_PERF_USER_STACK_DUMP
50         select HAVE_DMA_API_DEBUG
51         select HAVE_DMA_CONTIGUOUS
52         select HAVE_SYSCALL_TRACEPOINTS
53         select MAY_HAVE_SPARSE_IRQ
54         select MODULES_USE_ELF_RELA if MODULES
55         select OF
56         select OF_EARLY_FLATTREE
57         select PERF_USE_VMALLOC if CPU_CK610
58         select RTC_LIB
59         select TIMER_OF
60         select USB_ARCH_HAS_EHCI
61         select USB_ARCH_HAS_OHCI
63 config CPU_HAS_CACHEV2
64         bool
66 config CPU_HAS_FPUV2
67         bool
69 config CPU_HAS_HILO
70         bool
72 config CPU_HAS_TLBI
73         bool
75 config CPU_HAS_LDSTEX
76         bool
77         help
78           For SMP, CPU needs "ldex&stex" instrcutions to atomic operations.
80 config CPU_NEED_TLBSYNC
81         bool
83 config CPU_NEED_SOFTALIGN
84         bool
86 config CPU_NO_USER_BKPT
87         bool
88         help
89           For abiv2 we couldn't use "trap 1" as user space bkpt in gdbserver, because
90           abiv2 is 16/32bit instruction set and "trap 1" is 32bit.
91           So we need a 16bit instruction as user space bkpt, and it will cause an illegal
92           instruction exception.
93           In kernel we parse the *regs->pc to determine whether to send SIGTRAP or not.
95 config GENERIC_CALIBRATE_DELAY
96         def_bool y
98 config GENERIC_CSUM
99         def_bool y
101 config GENERIC_HWEIGHT
102         def_bool y
104 config MMU
105         def_bool y
107 config STACKTRACE_SUPPORT
108         def_bool y
110 config TIME_LOW_RES
111         def_bool y
113 config TRACE_IRQFLAGS_SUPPORT
114         def_bool y
116 config CPU_TLB_SIZE
117         int
118         default "128"   if (CPU_CK610 || CPU_CK807 || CPU_CK810)
119         default "1024"  if (CPU_CK860)
121 config CPU_ASID_BITS
122         int
123         default "8"     if (CPU_CK610 || CPU_CK807 || CPU_CK810)
124         default "12"    if (CPU_CK860)
126 config L1_CACHE_SHIFT
127         int
128         default "4"     if (CPU_CK610)
129         default "5"     if (CPU_CK807 || CPU_CK810)
130         default "6"     if (CPU_CK860)
132 menu "Processor type and features"
134 choice
135         prompt "CPU MODEL"
136         default CPU_CK807
138 config CPU_CK610
139         bool "CSKY CPU ck610"
140         select CPU_NEED_TLBSYNC
141         select CPU_NEED_SOFTALIGN
142         select CPU_NO_USER_BKPT
144 config CPU_CK810
145         bool "CSKY CPU ck810"
146         select CPU_HAS_HILO
147         select CPU_NEED_TLBSYNC
149 config CPU_CK807
150         bool "CSKY CPU ck807"
151         select CPU_HAS_HILO
153 config CPU_CK860
154         bool "CSKY CPU ck860"
155         select CPU_HAS_TLBI
156         select CPU_HAS_CACHEV2
157         select CPU_HAS_LDSTEX
158         select CPU_HAS_FPUV2
159 endchoice
161 choice
162         prompt "C-SKY PMU type"
163         depends on PERF_EVENTS
164         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
166 config CPU_PMU_NONE
167         bool "None"
169 config CSKY_PMU_V1
170         bool "Performance Monitoring Unit Ver.1"
172 endchoice
174 choice
175         prompt "Power Manager Instruction (wait/doze/stop)"
176         default CPU_PM_NONE
178 config CPU_PM_NONE
179         bool "None"
181 config CPU_PM_WAIT
182         bool "wait"
184 config CPU_PM_DOZE
185         bool "doze"
187 config CPU_PM_STOP
188         bool "stop"
189 endchoice
191 config CPU_HAS_VDSP
192         bool "CPU has VDSP coprocessor"
193         depends on CPU_HAS_FPU && CPU_HAS_FPUV2
195 config CPU_HAS_FPU
196         bool "CPU has FPU coprocessor"
197         depends on CPU_CK807 || CPU_CK810 || CPU_CK860
199 config CPU_HAS_TEE
200         bool "CPU has Trusted Execution Environment"
201         depends on CPU_CK810
203 config SMP
204         bool "Symmetric Multi-Processing (SMP) support for C-SKY"
205         depends on CPU_CK860
206         default n
208 config NR_CPUS
209         int "Maximum number of CPUs (2-32)"
210         range 2 32
211         depends on SMP
212         default "2"
214 config HIGHMEM
215         bool "High Memory Support"
216         depends on !CPU_CK610
217         default y
219 config FORCE_MAX_ZONEORDER
220         int "Maximum zone order"
221         default "11"
223 config RAM_BASE
224         hex "DRAM start addr (the same with memory-section in dts)"
225         default 0x0
227 config HOTPLUG_CPU
228         bool "Support for hot-pluggable CPUs"
229         select GENERIC_IRQ_MIGRATION
230         depends on SMP
231         help
232           Say Y here to allow turning CPUs off and on. CPUs can be
233           controlled through /sys/devices/system/cpu/cpu1/hotplug/target.
235           Say N if you want to disable CPU hotplug.
236 endmenu
238 source "kernel/Kconfig.hz"