Commit | Line | Data |
---|---|---|
cfdbc2e1 VG |
1 | # |
2 | # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | |
3 | # | |
4 | # This program is free software; you can redistribute it and/or modify | |
5 | # it under the terms of the GNU General Public License version 2 as | |
6 | # published by the Free Software Foundation. | |
7 | # | |
8 | ||
9 | config ARC | |
10 | def_bool y | |
f06d19e4 | 11 | select BUILDTIME_EXTABLE_SORT |
d7f8a085 | 12 | select COMMON_CLK |
4adeefe1 | 13 | select CLONE_BACKWARDS |
cfdbc2e1 VG |
14 | # ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev |
15 | select DEVTMPFS if !INITRAMFS_SOURCE="" | |
16 | select GENERIC_ATOMIC64 | |
17 | select GENERIC_CLOCKEVENTS | |
18 | select GENERIC_FIND_FIRST_BIT | |
19 | # for now, we don't need GENERIC_IRQ_PROBE, CONFIG_GENERIC_IRQ_CHIP | |
20 | select GENERIC_IRQ_SHOW | |
21 | select GENERIC_PENDING_IRQ if SMP | |
22 | select GENERIC_SMP_IDLE_THREAD | |
f46121bd | 23 | select HAVE_ARCH_KGDB |
547f1125 | 24 | select HAVE_ARCH_TRACEHOOK |
4368902b | 25 | select HAVE_IOREMAP_PROT |
4d86dfbb VG |
26 | select HAVE_KPROBES |
27 | select HAVE_KRETPROBES | |
c121c506 | 28 | select HAVE_MEMBLOCK |
854a0d95 | 29 | select HAVE_MOD_ARCH_SPECIFIC if ARC_DW2_UNWIND |
769bc1fd | 30 | select HAVE_OPROFILE |
9c57564e | 31 | select HAVE_PERF_EVENTS |
999159a5 | 32 | select IRQ_DOMAIN |
cfdbc2e1 | 33 | select MODULES_USE_ELF_RELA |
c121c506 | 34 | select NO_BOOTMEM |
999159a5 VG |
35 | select OF |
36 | select OF_EARLY_FLATTREE | |
9c57564e | 37 | select PERF_USE_VMALLOC |
d1a1dc0b | 38 | select HAVE_DEBUG_STACKOVERFLOW |
cfdbc2e1 | 39 | |
0dafafc3 VG |
40 | config TRACE_IRQFLAGS_SUPPORT |
41 | def_bool y | |
42 | ||
43 | config LOCKDEP_SUPPORT | |
44 | def_bool y | |
45 | ||
cfdbc2e1 VG |
46 | config SCHED_OMIT_FRAME_POINTER |
47 | def_bool y | |
48 | ||
49 | config GENERIC_CSUM | |
50 | def_bool y | |
51 | ||
52 | config RWSEM_GENERIC_SPINLOCK | |
53 | def_bool y | |
54 | ||
55 | config ARCH_FLATMEM_ENABLE | |
56 | def_bool y | |
57 | ||
58 | config MMU | |
59 | def_bool y | |
60 | ||
ce816fa8 | 61 | config NO_IOPORT_MAP |
cfdbc2e1 VG |
62 | def_bool y |
63 | ||
64 | config GENERIC_CALIBRATE_DELAY | |
65 | def_bool y | |
66 | ||
67 | config GENERIC_HWEIGHT | |
68 | def_bool y | |
69 | ||
44c8bb91 VG |
70 | config STACKTRACE_SUPPORT |
71 | def_bool y | |
72 | select STACKTRACE | |
73 | ||
cfdbc2e1 VG |
74 | config HAVE_LATENCYTOP_SUPPORT |
75 | def_bool y | |
76 | ||
77 | config NO_DMA | |
78 | def_bool n | |
79 | ||
80 | source "init/Kconfig" | |
81 | source "kernel/Kconfig.freezer" | |
82 | ||
83 | menu "ARC Architecture Configuration" | |
84 | ||
93ad700d | 85 | menu "ARC Platform/SoC/Board" |
cfdbc2e1 | 86 | |
93ad700d | 87 | source "arch/arc/plat-arcfpga/Kconfig" |
072eb693 | 88 | source "arch/arc/plat-tb10x/Kconfig" |
cfdbc2e1 | 89 | #New platform adds here |
93ad700d | 90 | |
53d98958 | 91 | endmenu |
cfdbc2e1 VG |
92 | |
93 | menu "ARC CPU Configuration" | |
94 | ||
95 | choice | |
96 | prompt "ARC Core" | |
97 | default ARC_CPU_770 | |
98 | ||
99 | config ARC_CPU_750D | |
100 | bool "ARC750D" | |
101 | help | |
102 | Support for ARC750 core | |
103 | ||
104 | config ARC_CPU_770 | |
105 | bool "ARC770" | |
106 | select ARC_CPU_REL_4_10 | |
107 | help | |
108 | Support for ARC770 core introduced with Rel 4.10 (Summer 2011) | |
109 | This core has a bunch of cool new features: | |
110 | -MMU-v3: Variable Page Sz (4k, 8k, 16k), bigger J-TLB (128x4) | |
111 | Shared Address Spaces (for sharing TLB entires in MMU) | |
112 | -Caches: New Prog Model, Region Flush | |
113 | -Insns: endian swap, load-locked/store-conditional, time-stamp-ctr | |
114 | ||
115 | endchoice | |
116 | ||
117 | config CPU_BIG_ENDIAN | |
118 | bool "Enable Big Endian Mode" | |
119 | default n | |
120 | help | |
121 | Build kernel for Big Endian Mode of ARC CPU | |
122 | ||
fc7943d2 VG |
123 | # If a platform can't work with 0x8000_0000 based dma_addr_t |
124 | config ARC_PLAT_NEEDS_CPU_TO_DMA | |
125 | bool | |
126 | ||
41195d23 VG |
127 | config SMP |
128 | bool "Symmetric Multi-Processing (Incomplete)" | |
129 | default n | |
41195d23 VG |
130 | help |
131 | This enables support for systems with more than one CPU. If you have | |
4a474157 RG |
132 | a system with only one CPU, say N. If you have a system with more |
133 | than one CPU, say Y. | |
41195d23 VG |
134 | |
135 | if SMP | |
136 | ||
137 | config ARC_HAS_COH_CACHES | |
138 | def_bool n | |
139 | ||
41195d23 VG |
140 | config ARC_HAS_REENTRANT_IRQ_LV2 |
141 | def_bool n | |
142 | ||
143 | endif | |
144 | ||
145 | config NR_CPUS | |
3aa4f80e NC |
146 | int "Maximum number of CPUs (2-4096)" |
147 | range 2 4096 | |
41195d23 VG |
148 | depends on SMP |
149 | default "2" | |
150 | ||
cfdbc2e1 VG |
151 | menuconfig ARC_CACHE |
152 | bool "Enable Cache Support" | |
153 | default y | |
41195d23 VG |
154 | # if SMP, cache enabled ONLY if ARC implementation has cache coherency |
155 | depends on !SMP || ARC_HAS_COH_CACHES | |
cfdbc2e1 VG |
156 | |
157 | if ARC_CACHE | |
158 | ||
159 | config ARC_CACHE_LINE_SHIFT | |
160 | int "Cache Line Length (as power of 2)" | |
161 | range 5 7 | |
162 | default "6" | |
163 | help | |
164 | Starting with ARC700 4.9, Cache line length is configurable, | |
165 | This option specifies "N", with Line-len = 2 power N | |
166 | So line lengths of 32, 64, 128 are specified by 5,6,7, respectively | |
167 | Linux only supports same line lengths for I and D caches. | |
168 | ||
169 | config ARC_HAS_ICACHE | |
170 | bool "Use Instruction Cache" | |
171 | default y | |
172 | ||
173 | config ARC_HAS_DCACHE | |
174 | bool "Use Data Cache" | |
175 | default y | |
176 | ||
177 | config ARC_CACHE_PAGES | |
178 | bool "Per Page Cache Control" | |
179 | default y | |
180 | depends on ARC_HAS_ICACHE || ARC_HAS_DCACHE | |
181 | help | |
182 | This can be used to over-ride the global I/D Cache Enable on a | |
183 | per-page basis (but only for pages accessed via MMU such as | |
184 | Kernel Virtual address or User Virtual Address) | |
185 | TLB entries have a per-page Cache Enable Bit. | |
186 | Note that Global I/D ENABLE + Per Page DISABLE works but corollary | |
187 | Global DISABLE + Per Page ENABLE won't work | |
188 | ||
4102b533 VG |
189 | config ARC_CACHE_VIPT_ALIASING |
190 | bool "Support VIPT Aliasing D$" | |
2f9e9961 | 191 | depends on ARC_HAS_DCACHE |
4102b533 VG |
192 | default n |
193 | ||
cfdbc2e1 VG |
194 | endif #ARC_CACHE |
195 | ||
8b5850f8 VG |
196 | config ARC_HAS_ICCM |
197 | bool "Use ICCM" | |
198 | help | |
199 | Single Cycle RAMS to store Fast Path Code | |
200 | default n | |
201 | ||
202 | config ARC_ICCM_SZ | |
203 | int "ICCM Size in KB" | |
204 | default "64" | |
205 | depends on ARC_HAS_ICCM | |
206 | ||
207 | config ARC_HAS_DCCM | |
208 | bool "Use DCCM" | |
209 | help | |
210 | Single Cycle RAMS to store Fast Path Data | |
211 | default n | |
212 | ||
213 | config ARC_DCCM_SZ | |
214 | int "DCCM Size in KB" | |
215 | default "64" | |
216 | depends on ARC_HAS_DCCM | |
217 | ||
218 | config ARC_DCCM_BASE | |
219 | hex "DCCM map address" | |
220 | default "0xA0000000" | |
221 | depends on ARC_HAS_DCCM | |
222 | ||
cfdbc2e1 VG |
223 | config ARC_HAS_HW_MPY |
224 | bool "Use Hardware Multiplier (Normal or Faster XMAC)" | |
225 | default y | |
226 | help | |
227 | Influences how gcc generates code for MPY operations. | |
228 | If enabled, MPYxx insns are generated, provided by Standard/XMAC | |
229 | Multipler. Otherwise software multipy lib is used | |
230 | ||
231 | choice | |
232 | prompt "ARC700 MMU Version" | |
233 | default ARC_MMU_V3 if ARC_CPU_770 | |
234 | default ARC_MMU_V2 if ARC_CPU_750D | |
235 | ||
236 | config ARC_MMU_V1 | |
237 | bool "MMU v1" | |
238 | help | |
239 | Orig ARC700 MMU | |
240 | ||
241 | config ARC_MMU_V2 | |
242 | bool "MMU v2" | |
243 | help | |
244 | Fixed the deficiency of v1 - possible thrashing in memcpy sceanrio | |
245 | when 2 D-TLB and 1 I-TLB entries index into same 2way set. | |
246 | ||
247 | config ARC_MMU_V3 | |
248 | bool "MMU v3" | |
249 | depends on ARC_CPU_770 | |
250 | help | |
251 | Introduced with ARC700 4.10: New Features | |
252 | Variable Page size (1k-16k), var JTLB size 128 x (2 or 4) | |
253 | Shared Address Spaces (SASID) | |
254 | ||
255 | endchoice | |
256 | ||
257 | ||
258 | choice | |
259 | prompt "MMU Page Size" | |
260 | default ARC_PAGE_SIZE_8K | |
261 | ||
262 | config ARC_PAGE_SIZE_8K | |
263 | bool "8KB" | |
264 | help | |
265 | Choose between 8k vs 16k | |
266 | ||
267 | config ARC_PAGE_SIZE_16K | |
268 | bool "16KB" | |
269 | depends on ARC_MMU_V3 | |
270 | ||
271 | config ARC_PAGE_SIZE_4K | |
272 | bool "4KB" | |
273 | depends on ARC_MMU_V3 | |
274 | ||
275 | endchoice | |
276 | ||
4788a594 VG |
277 | config ARC_COMPACT_IRQ_LEVELS |
278 | bool "ARCompact IRQ Priorities: High(2)/Low(1)" | |
279 | default n | |
280 | # Timer HAS to be high priority, for any other high priority config | |
281 | select ARC_IRQ3_LV2 | |
41195d23 VG |
282 | # if SMP, LV2 enabled ONLY if ARC implementation has LV2 re-entrancy |
283 | depends on !SMP || ARC_HAS_REENTRANT_IRQ_LV2 | |
4788a594 VG |
284 | |
285 | if ARC_COMPACT_IRQ_LEVELS | |
286 | ||
287 | config ARC_IRQ3_LV2 | |
288 | bool | |
289 | ||
290 | config ARC_IRQ5_LV2 | |
291 | bool | |
292 | ||
293 | config ARC_IRQ6_LV2 | |
294 | bool | |
295 | ||
296 | endif | |
297 | ||
cfdbc2e1 VG |
298 | config ARC_FPU_SAVE_RESTORE |
299 | bool "Enable FPU state persistence across context switch" | |
300 | default n | |
301 | help | |
302 | Double Precision Floating Point unit had dedictaed regs which | |
303 | need to be saved/restored across context-switch. | |
304 | Note that ARC FPU is overly simplistic, unlike say x86, which has | |
305 | hardware pieces to allow software to conditionally save/restore, | |
306 | based on actual usage of FPU by a task. Thus our implemn does | |
307 | this for all tasks in system. | |
308 | ||
fbf8e13d VG |
309 | config ARC_CANT_LLSC |
310 | def_bool n | |
311 | ||
cfdbc2e1 VG |
312 | menuconfig ARC_CPU_REL_4_10 |
313 | bool "Enable support for Rel 4.10 features" | |
314 | default n | |
315 | help | |
316 | -ARC770 (and dependent features) enabled | |
317 | -ARC750 also shares some of the new features with 770 | |
318 | ||
319 | config ARC_HAS_LLSC | |
320 | bool "Insn: LLOCK/SCOND (efficient atomic ops)" | |
321 | default y | |
fbf8e13d | 322 | depends on ARC_CPU_770 && !ARC_CANT_LLSC |
cfdbc2e1 VG |
323 | |
324 | config ARC_HAS_SWAPE | |
325 | bool "Insn: SWAPE (endian-swap)" | |
326 | default y | |
327 | depends on ARC_CPU_REL_4_10 | |
328 | ||
329 | config ARC_HAS_RTSC | |
330 | bool "Insn: RTSC (64-bit r/o cycle counter)" | |
331 | default y | |
332 | depends on ARC_CPU_REL_4_10 | |
7d0857a5 | 333 | depends on !SMP |
cfdbc2e1 VG |
334 | |
335 | endmenu # "ARC CPU Configuration" | |
336 | ||
cfdbc2e1 VG |
337 | config LINUX_LINK_BASE |
338 | hex "Linux Link Address" | |
339 | default "0x80000000" | |
340 | help | |
341 | ARC700 divides the 32 bit phy address space into two equal halves | |
342 | -Lower 2G (0 - 0x7FFF_FFFF ) is user virtual, translated by MMU | |
343 | -Upper 2G (0x8000_0000 onwards) is untranslated, for kernel | |
344 | Typically Linux kernel is linked at the start of untransalted addr, | |
345 | hence the default value of 0x8zs. | |
346 | However some customers have peripherals mapped at this addr, so | |
347 | Linux needs to be scooted a bit. | |
348 | If you don't know what the above means, leave this setting alone. | |
349 | ||
080c3747 VG |
350 | config ARC_CURR_IN_REG |
351 | bool "Dedicate Register r25 for current_task pointer" | |
352 | default y | |
353 | help | |
354 | This reserved Register R25 to point to Current Task in | |
355 | kernel mode. This saves memory access for each such access | |
356 | ||
2e651ea1 VG |
357 | |
358 | config ARC_MISALIGN_ACCESS | |
359 | bool "Emulate unaligned memory access (userspace only)" | |
2e651ea1 VG |
360 | select SYSCTL_ARCH_UNALIGN_NO_WARN |
361 | select SYSCTL_ARCH_UNALIGN_ALLOW | |
362 | help | |
363 | This enables misaligned 16 & 32 bit memory access from user space. | |
364 | Use ONLY-IF-ABS-NECESSARY as it will be very slow and also can hide | |
365 | potential bugs in code | |
366 | ||
cfdbc2e1 VG |
367 | config HZ |
368 | int "Timer Frequency" | |
369 | default 100 | |
370 | ||
cbe056f7 VG |
371 | config ARC_METAWARE_HLINK |
372 | bool "Support for Metaware debugger assisted Host access" | |
373 | default n | |
374 | help | |
375 | This options allows a Linux userland apps to directly access | |
376 | host file system (open/creat/read/write etc) with help from | |
377 | Metaware Debugger. This can come in handy for Linux-host communication | |
378 | when there is no real usable peripheral such as EMAC. | |
379 | ||
cfdbc2e1 VG |
380 | menuconfig ARC_DBG |
381 | bool "ARC debugging" | |
382 | default y | |
383 | ||
854a0d95 VG |
384 | config ARC_DW2_UNWIND |
385 | bool "Enable DWARF specific kernel stack unwind" | |
386 | depends on ARC_DBG | |
387 | default y | |
388 | select KALLSYMS | |
389 | help | |
390 | Compiles the kernel with DWARF unwind information and can be used | |
391 | to get stack backtraces. | |
392 | ||
393 | If you say Y here the resulting kernel image will be slightly larger | |
394 | but not slower, and it will give very useful debugging information. | |
395 | If you don't debug the kernel, you can say N, but we may not be able | |
396 | to solve problems without frame unwind information | |
397 | ||
cfdbc2e1 VG |
398 | config ARC_DBG_TLB_PARANOIA |
399 | bool "Paranoia Checks in Low Level TLB Handlers" | |
f46121bd | 400 | depends on ARC_DBG |
cfdbc2e1 VG |
401 | default n |
402 | ||
403 | config ARC_DBG_TLB_MISS_COUNT | |
404 | bool "Profile TLB Misses" | |
405 | default n | |
406 | select DEBUG_FS | |
407 | depends on ARC_DBG | |
408 | help | |
409 | Counts number of I and D TLB Misses and exports them via Debugfs | |
410 | The counters can be cleared via Debugfs as well | |
411 | ||
999159a5 VG |
412 | config ARC_BUILTIN_DTB_NAME |
413 | string "Built in DTB" | |
414 | help | |
415 | Set the name of the DTB to embed in the vmlinux binary | |
416 | Leaving it blank selects the minimal "skeleton" dtb | |
417 | ||
cfdbc2e1 VG |
418 | source "kernel/Kconfig.preempt" |
419 | ||
5628832f VG |
420 | menu "Executable file formats" |
421 | source "fs/Kconfig.binfmt" | |
422 | endmenu | |
423 | ||
cfdbc2e1 VG |
424 | endmenu # "ARC Architecture Configuration" |
425 | ||
426 | source "mm/Kconfig" | |
427 | source "net/Kconfig" | |
428 | source "drivers/Kconfig" | |
429 | source "fs/Kconfig" | |
430 | source "arch/arc/Kconfig.debug" | |
431 | source "security/Kconfig" | |
432 | source "crypto/Kconfig" | |
433 | source "lib/Kconfig" |