Commit | Line | Data |
---|---|---|
66701b14 | 1 | config ZONE_DMA |
35f9cd08 | 2 | def_bool y |
66701b14 | 3 | |
8e1a6dd2 | 4 | config XTENSA |
35f9cd08 | 5 | def_bool y |
8f371c75 | 6 | select ARCH_WANT_FRAME_POINTERS |
e969161b | 7 | select ARCH_WANT_IPC_PARSE_VERSION |
6ed65f37 | 8 | select ARCH_WANT_OPTIONAL_GPIOLIB |
25df8198 | 9 | select BUILDTIME_EXTABLE_SORT |
3e41f9ba | 10 | select CLONE_BACKWARDS |
920f8a39 MF |
11 | select COMMON_CLK |
12 | select GENERIC_ATOMIC64 | |
13 | select GENERIC_CLOCKEVENTS | |
14 | select GENERIC_IRQ_SHOW | |
15 | select GENERIC_PCI_IOMAP | |
16 | select GENERIC_SCHED_CLOCK | |
c75959a6 MF |
17 | select HAVE_DMA_API_DEBUG |
18 | select HAVE_DMA_ATTRS | |
478ba61a | 19 | select HAVE_FUNCTION_TRACER |
496543c4 | 20 | select HAVE_IRQ_TIME_ACCOUNTING |
920f8a39 | 21 | select HAVE_OPROFILE |
a6f3eefa | 22 | select HAVE_PERF_EVENTS |
920f8a39 MF |
23 | select IRQ_DOMAIN |
24 | select MODULES_USE_ELF_RELA | |
25 | select VIRT_TO_BUS | |
8e1a6dd2 CZ |
26 | help |
27 | Xtensa processors are 32-bit RISC machines designed by Tensilica | |
28 | primarily for embedded systems. These processors are both | |
29 | configurable and extensible. The Linux port to the Xtensa | |
30 | architecture supports all processor configurations and extensions, | |
31 | with reasonable minimum requirements. The Xtensa Linux project has | |
0ada4490 | 32 | a home page at <http://www.linux-xtensa.org/>. |
8e1a6dd2 | 33 | |
8e1a6dd2 | 34 | config RWSEM_XCHGADD_ALGORITHM |
35f9cd08 | 35 | def_bool y |
8e1a6dd2 | 36 | |
d4337aa5 | 37 | config GENERIC_HWEIGHT |
35f9cd08 | 38 | def_bool y |
d4337aa5 | 39 | |
f0d1b0b3 | 40 | config ARCH_HAS_ILOG2_U32 |
35f9cd08 | 41 | def_bool n |
f0d1b0b3 DH |
42 | |
43 | config ARCH_HAS_ILOG2_U64 | |
35f9cd08 | 44 | def_bool n |
f0d1b0b3 | 45 | |
ce816fa8 | 46 | config NO_IOPORT_MAP |
d046f77e | 47 | def_bool n |
5ea81769 | 48 | |
bdc80787 PA |
49 | config HZ |
50 | int | |
51 | default 100 | |
52 | ||
8e1a6dd2 | 53 | source "init/Kconfig" |
dc52ddc0 | 54 | source "kernel/Kconfig.freezer" |
8e1a6dd2 | 55 | |
8f371c75 MF |
56 | config LOCKDEP_SUPPORT |
57 | def_bool y | |
58 | ||
3e4196a5 MF |
59 | config STACKTRACE_SUPPORT |
60 | def_bool y | |
61 | ||
c92931b2 MF |
62 | config TRACE_IRQFLAGS_SUPPORT |
63 | def_bool y | |
64 | ||
35f9cd08 | 65 | config MMU |
de7c1c78 | 66 | def_bool n |
35f9cd08 | 67 | |
4c0d2141 JW |
68 | config VARIANT_IRQ_SWITCH |
69 | def_bool n | |
70 | ||
a1a2bdec BS |
71 | config HAVE_XTENSA_GPIO32 |
72 | def_bool n | |
73 | ||
8e1a6dd2 CZ |
74 | menu "Processor type and features" |
75 | ||
76 | choice | |
77 | prompt "Xtensa Processor Configuration" | |
173d6681 | 78 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 79 | |
173d6681 | 80 | config XTENSA_VARIANT_FSF |
0025427e | 81 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 82 | select MMU |
0025427e CZ |
83 | |
84 | config XTENSA_VARIANT_DC232B | |
85 | bool "dc232b - Diamond 232L Standard Core Rev.B (LE)" | |
35f9cd08 | 86 | select MMU |
a1a2bdec | 87 | select HAVE_XTENSA_GPIO32 |
0025427e | 88 | help |
35f9cd08 | 89 | This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). |
000af2c5 | 90 | |
d0b73b48 PD |
91 | config XTENSA_VARIANT_DC233C |
92 | bool "dc233c - Diamond 233L Standard Core Rev.C (LE)" | |
93 | select MMU | |
a1a2bdec | 94 | select HAVE_XTENSA_GPIO32 |
d0b73b48 PD |
95 | help |
96 | This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE). | |
97 | ||
420ae951 MF |
98 | config XTENSA_VARIANT_CUSTOM |
99 | bool "Custom Xtensa processor configuration" | |
420ae951 MF |
100 | select HAVE_XTENSA_GPIO32 |
101 | help | |
102 | Select this variant to use a custom Xtensa processor configuration. | |
103 | You will be prompted for a processor variant CORENAME. | |
8e1a6dd2 CZ |
104 | endchoice |
105 | ||
420ae951 MF |
106 | config XTENSA_VARIANT_CUSTOM_NAME |
107 | string "Xtensa Processor Custom Core Variant Name" | |
108 | depends on XTENSA_VARIANT_CUSTOM | |
109 | help | |
110 | Provide the name of a custom Xtensa processor variant. | |
111 | This CORENAME selects arch/xtensa/variant/CORENAME. | |
112 | Dont forget you have to select MMU if you have one. | |
113 | ||
114 | config XTENSA_VARIANT_NAME | |
115 | string | |
116 | default "dc232b" if XTENSA_VARIANT_DC232B | |
117 | default "dc233c" if XTENSA_VARIANT_DC233C | |
118 | default "fsf" if XTENSA_VARIANT_FSF | |
420ae951 MF |
119 | default XTENSA_VARIANT_CUSTOM_NAME if XTENSA_VARIANT_CUSTOM |
120 | ||
121 | config XTENSA_VARIANT_MMU | |
122 | bool "Core variant has a Full MMU (TLB, Pages, Protection, etc)" | |
123 | depends on XTENSA_VARIANT_CUSTOM | |
124 | default y | |
de7c1c78 | 125 | select MMU |
420ae951 MF |
126 | help |
127 | Build a Conventional Kernel with full MMU support, | |
128 | ie: it supports a TLB with auto-loading, page protection. | |
129 | ||
8e1a6dd2 CZ |
130 | config XTENSA_UNALIGNED_USER |
131 | bool "Unaligned memory access in use space" | |
35f9cd08 JW |
132 | help |
133 | The Xtensa architecture currently does not handle unaligned | |
134 | memory accesses in hardware but through an exception handler. | |
135 | Per default, unaligned memory accesses are disabled in user space. | |
8e1a6dd2 | 136 | |
35f9cd08 | 137 | Say Y here to enable unaligned memory access in user space. |
8e1a6dd2 | 138 | |
bd96efe1 | 139 | source "kernel/Kconfig.preempt" |
8e1a6dd2 | 140 | |
f615136c MF |
141 | config HAVE_SMP |
142 | bool "System Supports SMP (MX)" | |
de7c1c78 | 143 | depends on XTENSA_VARIANT_CUSTOM |
f615136c MF |
144 | select XTENSA_MX |
145 | help | |
146 | This option is use to indicate that the system-on-a-chip (SOC) | |
147 | supports Multiprocessing. Multiprocessor support implemented above | |
148 | the CPU core definition and currently needs to be selected manually. | |
149 | ||
150 | Multiprocessor support in implemented with external cache and | |
769a12a9 | 151 | interrupt controllers. |
f615136c MF |
152 | |
153 | The MX interrupt distributer adds Interprocessor Interrupts | |
154 | and causes the IRQ numbers to be increased by 4 for devices | |
155 | like the open cores ethernet driver and the serial interface. | |
156 | ||
157 | You still have to select "Enable SMP" to enable SMP on this SOC. | |
158 | ||
159 | config SMP | |
160 | bool "Enable Symmetric multi-processing support" | |
161 | depends on HAVE_SMP | |
f615136c MF |
162 | select GENERIC_SMP_IDLE_THREAD |
163 | help | |
164 | Enabled SMP Software; allows more than one CPU/CORE | |
165 | to be activated during startup. | |
166 | ||
167 | config NR_CPUS | |
168 | depends on SMP | |
169 | int "Maximum number of CPUs (2-32)" | |
170 | range 2 32 | |
171 | default "4" | |
172 | ||
49b424fe MF |
173 | config HOTPLUG_CPU |
174 | bool "Enable CPU hotplug support" | |
175 | depends on SMP | |
176 | help | |
177 | Say Y here to allow turning CPUs off and on. CPUs can be | |
178 | controlled through /sys/devices/system/cpu. | |
179 | ||
180 | Say N if you want to disable CPU hotplug. | |
181 | ||
e85e335f MF |
182 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
183 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
184 | default y | |
185 | help | |
186 | Earlier version initialized the MMU in the exception vector | |
187 | before jumping to _startup in head.S and had an advantage that | |
188 | it was possible to place a software breakpoint at 'reset' and | |
189 | then enter your normal kernel breakpoints once the MMU was mapped | |
190 | to the kernel mappings (0XC0000000). | |
191 | ||
192 | This unfortunately doesn't work for U-Boot and likley also wont | |
193 | work for using KEXEC to have a hot kernel ready for doing a | |
194 | KDUMP. | |
195 | ||
196 | So now the MMU is initialized in head.S but it's necessary to | |
197 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
198 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
199 | to mapping the MMU and after mapping even if the area of low memory | |
200 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
201 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
202 | Linux configurations it seems reasonable to just assume they exist | |
203 | and leave this older mechanism for unfortunate souls that choose | |
204 | not to follow Tensilica's recommendation. | |
205 | ||
206 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
207 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
208 | ||
209 | If in doubt, say Y. | |
210 | ||
65559100 MF |
211 | config HIGHMEM |
212 | bool "High Memory Support" | |
8a9de059 | 213 | depends on MMU |
65559100 MF |
214 | help |
215 | Linux can use the full amount of RAM in the system by | |
216 | default. However, the default MMUv2 setup only maps the | |
217 | lowermost 128 MB of memory linearly to the areas starting | |
218 | at 0xd0000000 (cached) and 0xd8000000 (uncached). | |
219 | When there are more than 128 MB memory in the system not | |
220 | all of it can be "permanently mapped" by the kernel. | |
221 | The physical memory that's not permanently mapped is called | |
222 | "high memory". | |
223 | ||
224 | If you are compiling a kernel which will never run on a | |
225 | machine with more than 128 MB total physical RAM, answer | |
226 | N here. | |
227 | ||
228 | If unsure, say Y. | |
229 | ||
9184289c MF |
230 | config FAST_SYSCALL_XTENSA |
231 | bool "Enable fast atomic syscalls" | |
232 | default n | |
233 | help | |
234 | fast_syscall_xtensa is a syscall that can make atomic operations | |
235 | on UP kernel when processor has no s32c1i support. | |
236 | ||
237 | This syscall is deprecated. It may have issues when called with | |
238 | invalid arguments. It is provided only for backwards compatibility. | |
239 | Only enable it if your userspace software requires it. | |
240 | ||
241 | If unsure, say N. | |
242 | ||
243 | config FAST_SYSCALL_SPILL_REGISTERS | |
244 | bool "Enable spill registers syscall" | |
245 | default n | |
246 | help | |
247 | fast_syscall_spill_registers is a syscall that spills all active | |
248 | register windows of a calling userspace task onto its stack. | |
249 | ||
250 | This syscall is deprecated. It may have issues when called with | |
251 | invalid arguments. It is provided only for backwards compatibility. | |
252 | Only enable it if your userspace software requires it. | |
253 | ||
254 | If unsure, say N. | |
255 | ||
8e1a6dd2 CZ |
256 | endmenu |
257 | ||
35f9cd08 JW |
258 | config XTENSA_CALIBRATE_CCOUNT |
259 | def_bool n | |
260 | help | |
261 | On some platforms (XT2000, for example), the CPU clock rate can | |
262 | vary. The frequency can be determined, however, by measuring | |
263 | against a well known, fixed frequency, such as an UART oscillator. | |
264 | ||
265 | config SERIAL_CONSOLE | |
266 | def_bool n | |
267 | ||
35f9cd08 JW |
268 | menu "Bus options" |
269 | ||
270 | config PCI | |
271 | bool "PCI support" | |
272 | default y | |
273 | help | |
274 | Find out whether you have a PCI motherboard. PCI is the name of a | |
275 | bus system, i.e. the way the CPU talks to the other stuff inside | |
276 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
277 | VESA. If you have PCI, say Y, otherwise N. | |
278 | ||
279 | source "drivers/pci/Kconfig" | |
280 | ||
35e71f90 CZ |
281 | endmenu |
282 | ||
8e1a6dd2 CZ |
283 | menu "Platform options" |
284 | ||
285 | choice | |
286 | prompt "Xtensa System Type" | |
287 | default XTENSA_PLATFORM_ISS | |
288 | ||
289 | config XTENSA_PLATFORM_ISS | |
290 | bool "ISS" | |
35f9cd08 JW |
291 | select XTENSA_CALIBRATE_CCOUNT |
292 | select SERIAL_CONSOLE | |
8e1a6dd2 CZ |
293 | help |
294 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
295 | ||
296 | config XTENSA_PLATFORM_XT2000 | |
297 | bool "XT2000" | |
4964527d | 298 | select HAVE_IDE |
8e1a6dd2 CZ |
299 | help |
300 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
301 | This hardware is capable of running a full Linux distribution. | |
302 | ||
0d456bad MF |
303 | config XTENSA_PLATFORM_XTFPGA |
304 | bool "XTFPGA" | |
61e47e9b | 305 | select ETHOC if ETHERNET |
3932b9ca | 306 | select PLATFORM_WANT_DEFAULT_MEM |
0d456bad | 307 | select SERIAL_CONSOLE |
0d456bad MF |
308 | select XTENSA_CALIBRATE_CCOUNT |
309 | help | |
310 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
311 | This hardware is capable of running a full Linux distribution. | |
312 | ||
8e1a6dd2 CZ |
313 | endchoice |
314 | ||
315 | ||
8e1a6dd2 CZ |
316 | config XTENSA_CPU_CLOCK |
317 | int "CPU clock rate [MHz]" | |
318 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 319 | default 16 |
8e1a6dd2 CZ |
320 | |
321 | config GENERIC_CALIBRATE_DELAY | |
322 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 323 | help |
82300bf4 | 324 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
325 | |
326 | config CMDLINE_BOOL | |
327 | bool "Default bootloader kernel arguments" | |
328 | ||
329 | config CMDLINE | |
330 | string "Initial kernel command string" | |
331 | depends on CMDLINE_BOOL | |
332 | default "console=ttyS0,38400 root=/dev/ram" | |
333 | help | |
334 | On some architectures (EBSA110 and CATS), there is currently no way | |
335 | for the boot loader to pass arguments to the kernel. For these | |
336 | architectures, you should supply some command-line options at build | |
337 | time by entering them here. As a minimum, you should specify the | |
338 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
339 | ||
da844a81 MF |
340 | config USE_OF |
341 | bool "Flattened Device Tree support" | |
342 | select OF | |
343 | select OF_EARLY_FLATTREE | |
344 | help | |
345 | Include support for flattened device tree machine descriptions. | |
346 | ||
347 | config BUILTIN_DTB | |
348 | string "DTB to build into the kernel image" | |
349 | depends on OF | |
350 | ||
b6c7e873 VP |
351 | config BLK_DEV_SIMDISK |
352 | tristate "Host file-based simulated block device support" | |
353 | default n | |
7a0684cd | 354 | depends on XTENSA_PLATFORM_ISS && BLOCK |
b6c7e873 VP |
355 | help |
356 | Create block devices that map to files in the host file system. | |
357 | Device binding to host file may be changed at runtime via proc | |
358 | interface provided the device is not in use. | |
359 | ||
360 | config BLK_DEV_SIMDISK_COUNT | |
361 | int "Number of host file-based simulated block devices" | |
362 | range 1 10 | |
363 | depends on BLK_DEV_SIMDISK | |
364 | default 2 | |
365 | help | |
366 | This is the default minimal number of created block devices. | |
367 | Kernel/module parameter 'simdisk_count' may be used to change this | |
368 | value at runtime. More file names (but no more than 10) may be | |
369 | specified as parameters, simdisk_count grows accordingly. | |
370 | ||
371 | config SIMDISK0_FILENAME | |
372 | string "Host filename for the first simulated device" | |
373 | depends on BLK_DEV_SIMDISK = y | |
374 | default "" | |
375 | help | |
376 | Attach a first simdisk to a host file. Conventionally, this file | |
377 | contains a root file system. | |
378 | ||
379 | config SIMDISK1_FILENAME | |
380 | string "Host filename for the second simulated device" | |
381 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
382 | default "" | |
383 | help | |
384 | Another simulated disk in a host file for a buildroot-independent | |
385 | storage. | |
386 | ||
82300bf4 CZ |
387 | source "mm/Kconfig" |
388 | ||
8e1a6dd2 CZ |
389 | source "drivers/pcmcia/Kconfig" |
390 | ||
391 | source "drivers/pci/hotplug/Kconfig" | |
392 | ||
3932b9ca MF |
393 | config PLATFORM_WANT_DEFAULT_MEM |
394 | def_bool n | |
395 | ||
396 | config DEFAULT_MEM_START | |
397 | hex "Physical address of the default memory area start" | |
398 | depends on PLATFORM_WANT_DEFAULT_MEM | |
399 | default 0x00000000 if MMU | |
400 | default 0x40000000 if !MMU | |
401 | help | |
402 | This is a fallback start address of the default memory area, it is | |
403 | used when no physical memory size is passed through DTB or through | |
404 | boot parameter from bootloader. | |
405 | ||
406 | In noMMU configuration the following parameters are derived from it: | |
407 | - kernel load address; | |
408 | - kernel entry point address; | |
409 | - relocatable vectors base address; | |
410 | - uBoot load address; | |
411 | - TASK_SIZE. | |
412 | ||
413 | If unsure, leave the default value here. | |
414 | ||
415 | config DEFAULT_MEM_SIZE | |
416 | hex "Maximal size of the default memory area" | |
417 | depends on PLATFORM_WANT_DEFAULT_MEM | |
418 | default 0x04000000 | |
419 | help | |
420 | This is a fallback size of the default memory area, it is used when | |
421 | no physical memory size is passed through DTB or through boot | |
422 | parameter from bootloader. | |
423 | ||
424 | It's also used for TASK_SIZE calculation in noMMU configuration. | |
425 | ||
426 | If unsure, leave the default value here. | |
427 | ||
4949009e MF |
428 | config XTFPGA_LCD |
429 | bool "Enable XTFPGA LCD driver" | |
430 | depends on XTENSA_PLATFORM_XTFPGA | |
431 | default n | |
432 | help | |
433 | There's a 2x16 LCD on most of XTFPGA boards, kernel may output | |
434 | progress messages there during bootup/shutdown. It may be useful | |
435 | during board bringup. | |
436 | ||
437 | If unsure, say N. | |
438 | ||
439 | config XTFPGA_LCD_BASE_ADDR | |
440 | hex "XTFPGA LCD base address" | |
441 | depends on XTFPGA_LCD | |
442 | default "0x0d0c0000" | |
443 | help | |
444 | Base address of the LCD controller inside KIO region. | |
445 | Different boards from XTFPGA family have LCD controller at different | |
446 | addresses. Please consult prototyping user guide for your board for | |
447 | the correct address. Wrong address here may lead to hardware lockup. | |
448 | ||
449 | config XTFPGA_LCD_8BIT_ACCESS | |
450 | bool "Use 8-bit access to XTFPGA LCD" | |
451 | depends on XTFPGA_LCD | |
452 | default n | |
453 | help | |
454 | LCD may be connected with 4- or 8-bit interface, 8-bit access may | |
455 | only be used with 8-bit interface. Please consult prototyping user | |
456 | guide for your board for the correct interface width. | |
457 | ||
8e1a6dd2 CZ |
458 | endmenu |
459 | ||
cab00891 | 460 | menu "Executable file formats" |
8e1a6dd2 | 461 | |
8e1a6dd2 CZ |
462 | source "fs/Kconfig.binfmt" |
463 | ||
464 | endmenu | |
465 | ||
e00d8b2f MF |
466 | menu "Power management options" |
467 | ||
468 | source "kernel/power/Kconfig" | |
469 | ||
470 | endmenu | |
471 | ||
d5950b43 SR |
472 | source "net/Kconfig" |
473 | ||
8e1a6dd2 CZ |
474 | source "drivers/Kconfig" |
475 | ||
476 | source "fs/Kconfig" | |
477 | ||
8e1a6dd2 CZ |
478 | source "arch/xtensa/Kconfig.debug" |
479 | ||
480 | source "security/Kconfig" | |
481 | ||
482 | source "crypto/Kconfig" | |
483 | ||
484 | source "lib/Kconfig" | |
485 | ||
486 |