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b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
5633004c JH |
2 | config METAG |
3 | def_bool y | |
4 | select EMBEDDED | |
5 | select GENERIC_ATOMIC64 | |
6 | select GENERIC_CLOCKEVENTS | |
7 | select GENERIC_IRQ_SHOW | |
5633004c JH |
8 | select GENERIC_SMP_IDLE_THREAD |
9 | select HAVE_64BIT_ALIGNED_ACCESS | |
10 | select HAVE_ARCH_TRACEHOOK | |
00512bdd | 11 | select HAVE_C_RECORDMCOUNT |
5633004c | 12 | select HAVE_DEBUG_KMEMLEAK |
cca7c66f | 13 | select HAVE_DEBUG_STACKOVERFLOW |
00512bdd | 14 | select HAVE_DYNAMIC_FTRACE |
5f56a5df | 15 | select HAVE_EXIT_THREAD |
00512bdd JH |
16 | select HAVE_FTRACE_MCOUNT_RECORD |
17 | select HAVE_FUNCTION_TRACER | |
5633004c JH |
18 | select HAVE_KERNEL_BZIP2 |
19 | select HAVE_KERNEL_GZIP | |
20 | select HAVE_KERNEL_LZO | |
21 | select HAVE_KERNEL_XZ | |
22 | select HAVE_MEMBLOCK | |
23 | select HAVE_MEMBLOCK_NODE_MAP | |
24 | select HAVE_MOD_ARCH_SPECIFIC | |
00e6c923 | 25 | select HAVE_OPROFILE |
903b20ad | 26 | select HAVE_PERF_EVENTS |
5633004c | 27 | select HAVE_SYSCALL_TRACEPOINTS |
b92021b0 | 28 | select HAVE_UNDERSCORE_SYMBOL_PREFIX |
5633004c | 29 | select IRQ_DOMAIN |
64b5aaad | 30 | select GENERIC_IRQ_EFFECTIVE_AFF_MASK |
5633004c JH |
31 | select MODULES_USE_ELF_RELA |
32 | select OF | |
33 | select OF_EARLY_FLATTREE | |
34 | select SPARSE_IRQ | |
fff7fb0b | 35 | select CPU_NO_EFFICIENT_FFS |
5633004c | 36 | |
5633004c JH |
37 | config STACKTRACE_SUPPORT |
38 | def_bool y | |
39 | ||
40 | config LOCKDEP_SUPPORT | |
41 | def_bool y | |
42 | ||
5633004c JH |
43 | config RWSEM_GENERIC_SPINLOCK |
44 | def_bool y | |
45 | ||
46 | config RWSEM_XCHGADD_ALGORITHM | |
47 | bool | |
48 | ||
49 | config GENERIC_HWEIGHT | |
50 | def_bool y | |
51 | ||
52 | config GENERIC_CALIBRATE_DELAY | |
53 | def_bool y | |
54 | ||
ce816fa8 | 55 | config NO_IOPORT_MAP |
5633004c JH |
56 | def_bool y |
57 | ||
58 | source "init/Kconfig" | |
59 | ||
60 | source "kernel/Kconfig.freezer" | |
61 | ||
62 | menu "Processor type and features" | |
63 | ||
64 | config MMU | |
65 | def_bool y | |
66 | ||
67 | config STACK_GROWSUP | |
68 | def_bool y | |
69 | ||
70 | config HOTPLUG_CPU | |
71 | bool "Enable CPU hotplug support" | |
72 | depends on SMP | |
73 | help | |
74 | Say Y here to allow turning CPUs off and on. CPUs can be | |
75 | controlled through /sys/devices/system/cpu. | |
76 | ||
77 | Say N if you want to disable CPU hotplug. | |
78 | ||
79 | config HIGHMEM | |
80 | bool "High Memory Support" | |
81 | help | |
82 | The address space of Meta processors is only 4 Gigabytes large | |
83 | and it has to accommodate user address space, kernel address | |
84 | space as well as some memory mapped IO. That means that, if you | |
85 | have a large amount of physical memory and/or IO, not all of the | |
86 | memory can be "permanently mapped" by the kernel. The physical | |
87 | memory that is not permanently mapped is called "high memory". | |
88 | ||
89 | Depending on the selected kernel/user memory split, minimum | |
90 | vmalloc space and actual amount of RAM, you may not need this | |
91 | option which should result in a slightly faster kernel. | |
92 | ||
93 | If unsure, say n. | |
94 | ||
95 | source "arch/metag/mm/Kconfig" | |
96 | ||
97 | source "arch/metag/Kconfig.soc" | |
98 | ||
99 | config METAG_META12 | |
100 | bool | |
101 | help | |
102 | Select this from the SoC config symbol to indicate that it contains a | |
103 | Meta 1.2 core. | |
104 | ||
105 | config METAG_META21 | |
106 | bool | |
107 | help | |
108 | Select this from the SoC config symbol to indicate that it contains a | |
109 | Meta 2.1 core. | |
110 | ||
111 | config SMP | |
112 | bool "Symmetric multi-processing support" | |
113 | depends on METAG_META21 && METAG_META21_MMU | |
5633004c JH |
114 | help |
115 | This enables support for systems with more than one thread running | |
116 | Linux. If you have a system with only one thread running Linux, | |
117 | say N. Otherwise, say Y. | |
118 | ||
119 | config NR_CPUS | |
120 | int "Maximum number of CPUs (2-4)" if SMP | |
121 | range 2 4 if SMP | |
122 | default "1" if !SMP | |
123 | default "4" if SMP | |
124 | ||
125 | config METAG_SMP_WRITE_REORDERING | |
126 | bool | |
127 | help | |
128 | This attempts to prevent cache-memory incoherence due to external | |
129 | reordering of writes from different hardware threads when SMP is | |
130 | enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an | |
131 | attempt to catch some of the cases, and also before writes to shared | |
132 | memory in LOCK1 protected atomics and spinlocks. | |
133 | This will not completely prevent cache incoherency on affected cores. | |
134 | ||
135 | config METAG_LNKGET_AROUND_CACHE | |
136 | bool | |
137 | depends on METAG_META21 | |
138 | help | |
139 | This indicates that the LNKGET/LNKSET instructions go around the | |
140 | cache, which requires some extra cache flushes when the memory needs | |
141 | to be accessed by normal GET/SET instructions too. | |
142 | ||
143 | choice | |
144 | prompt "Atomicity primitive" | |
145 | default METAG_ATOMICITY_LNKGET | |
146 | help | |
147 | This option selects the mechanism for performing atomic operations. | |
148 | ||
149 | config METAG_ATOMICITY_IRQSOFF | |
150 | depends on !SMP | |
151 | bool "irqsoff" | |
152 | help | |
153 | This option disables interrupts to achieve atomicity. This mechanism | |
154 | is not SMP-safe. | |
155 | ||
156 | config METAG_ATOMICITY_LNKGET | |
157 | depends on METAG_META21 | |
158 | bool "lnkget/lnkset" | |
159 | help | |
160 | This option uses the LNKGET and LNKSET instructions to achieve | |
161 | atomicity. LNKGET/LNKSET are load-link/store-conditional instructions. | |
162 | Choose this option if your system requires low latency. | |
163 | ||
164 | config METAG_ATOMICITY_LOCK1 | |
165 | depends on SMP | |
166 | bool "lock1" | |
167 | help | |
168 | This option uses the LOCK1 instruction for atomicity. This is mainly | |
169 | provided as a debugging aid if the lnkget/lnkset atomicity primitive | |
170 | isn't working properly. | |
171 | ||
172 | endchoice | |
173 | ||
174 | config METAG_FPU | |
175 | bool "FPU Support" | |
176 | depends on METAG_META21 | |
177 | default y | |
178 | help | |
179 | This option allows processes to use FPU hardware available with this | |
180 | CPU. If this option is not enabled FPU registers will not be saved | |
181 | and restored on context-switch. | |
182 | ||
183 | If you plan on running programs which are compiled to use hard floats | |
184 | say Y here. | |
185 | ||
186 | config METAG_DSP | |
187 | bool "DSP Support" | |
188 | help | |
189 | This option allows processes to use DSP hardware available | |
190 | with this CPU. If this option is not enabled DSP registers | |
191 | will not be saved and restored on context-switch. | |
192 | ||
193 | If you plan on running DSP programs say Y here. | |
194 | ||
195 | config METAG_PERFCOUNTER_IRQS | |
196 | bool "PerfCounters interrupt support" | |
197 | depends on METAG_META21 | |
198 | help | |
199 | This option enables using interrupts to collect information from | |
200 | Performance Counters. This option is supported in new META21 | |
201 | (starting from HTP265). | |
202 | ||
203 | When disabled, Performance Counters information will be collected | |
204 | based on Timer Interrupt. | |
205 | ||
00e6c923 JH |
206 | config HW_PERF_EVENTS |
207 | def_bool METAG_PERFCOUNTER_IRQS && PERF_EVENTS | |
208 | ||
ae85ac71 JH |
209 | config METAG_DA |
210 | bool "DA support" | |
211 | help | |
212 | Say Y if you plan to use a DA debug adapter with Linux. The presence | |
213 | of the DA will be detected automatically at boot, so it is safe to say | |
214 | Y to this option even when booting without a DA. | |
215 | ||
216 | This enables support for services provided by DA JTAG debug adapters, | |
217 | such as: | |
218 | - communication over DA channels (such as the console driver). | |
219 | - use of the DA filesystem. | |
220 | ||
5633004c JH |
221 | menu "Boot options" |
222 | ||
223 | config METAG_BUILTIN_DTB | |
224 | bool "Embed DTB in kernel image" | |
225 | default y | |
226 | help | |
227 | Embeds a device tree binary in the kernel image. | |
228 | ||
229 | config METAG_BUILTIN_DTB_NAME | |
230 | string "Built in DTB" | |
231 | depends on METAG_BUILTIN_DTB | |
232 | help | |
233 | Set the name of the DTB to embed (leave blank to pick one | |
234 | automatically based on kernel configuration). | |
235 | ||
236 | config CMDLINE_BOOL | |
237 | bool "Default bootloader kernel arguments" | |
238 | ||
239 | config CMDLINE | |
240 | string "Kernel command line" | |
241 | depends on CMDLINE_BOOL | |
242 | help | |
243 | On some architectures there is currently no way for the boot loader | |
244 | to pass arguments to the kernel. For these architectures, you should | |
245 | supply some command-line options at build time by entering them | |
246 | here. | |
247 | ||
248 | config CMDLINE_FORCE | |
249 | bool "Force default kernel command string" | |
250 | depends on CMDLINE_BOOL | |
251 | help | |
252 | Set this to have arguments from the default kernel command string | |
253 | override those passed by the boot loader. | |
254 | ||
255 | endmenu | |
256 | ||
257 | source "kernel/Kconfig.preempt" | |
258 | ||
259 | source kernel/Kconfig.hz | |
260 | ||
261 | endmenu | |
262 | ||
263 | menu "Power management options" | |
264 | ||
265 | source kernel/power/Kconfig | |
266 | ||
267 | endmenu | |
268 | ||
269 | menu "Executable file formats" | |
270 | ||
271 | source "fs/Kconfig.binfmt" | |
272 | ||
273 | endmenu | |
274 | ||
275 | source "net/Kconfig" | |
276 | ||
277 | source "drivers/Kconfig" | |
278 | ||
279 | source "fs/Kconfig" | |
280 | ||
281 | source "arch/metag/Kconfig.debug" | |
282 | ||
283 | source "security/Kconfig" | |
284 | ||
285 | source "crypto/Kconfig" | |
286 | ||
287 | source "lib/Kconfig" |