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b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
66701b14 | 2 | config ZONE_DMA |
35f9cd08 | 3 | def_bool y |
66701b14 | 4 | |
8e1a6dd2 | 5 | config XTENSA |
35f9cd08 | 6 | def_bool y |
07c75d7a | 7 | select ARCH_NO_COHERENT_DMA_MMAP if !MMU |
8f371c75 | 8 | select ARCH_WANT_FRAME_POINTERS |
e969161b | 9 | select ARCH_WANT_IPC_PARSE_VERSION |
25df8198 | 10 | select BUILDTIME_EXTABLE_SORT |
3e41f9ba | 11 | select CLONE_BACKWARDS |
920f8a39 MF |
12 | select COMMON_CLK |
13 | select GENERIC_ATOMIC64 | |
14 | select GENERIC_CLOCKEVENTS | |
15 | select GENERIC_IRQ_SHOW | |
16 | select GENERIC_PCI_IOMAP | |
17 | select GENERIC_SCHED_CLOCK | |
0e46c111 | 18 | select HAVE_DEBUG_KMEMLEAK |
c75959a6 | 19 | select HAVE_DMA_API_DEBUG |
9d2ffe5c | 20 | select HAVE_DMA_CONTIGUOUS |
5f56a5df | 21 | select HAVE_EXIT_THREAD |
478ba61a | 22 | select HAVE_FUNCTION_TRACER |
d951ba21 | 23 | select HAVE_FUTEX_CMPXCHG if !MMU |
c91e02bd | 24 | select HAVE_HW_BREAKPOINT if PERF_EVENTS |
496543c4 | 25 | select HAVE_IRQ_TIME_ACCOUNTING |
0e46c111 | 26 | select HAVE_MEMBLOCK |
920f8a39 | 27 | select HAVE_OPROFILE |
a6f3eefa | 28 | select HAVE_PERF_EVENTS |
920f8a39 MF |
29 | select IRQ_DOMAIN |
30 | select MODULES_USE_ELF_RELA | |
0e46c111 | 31 | select NO_BOOTMEM |
db8165f5 | 32 | select PERF_USE_VMALLOC |
920f8a39 | 33 | select VIRT_TO_BUS |
8e1a6dd2 CZ |
34 | help |
35 | Xtensa processors are 32-bit RISC machines designed by Tensilica | |
36 | primarily for embedded systems. These processors are both | |
37 | configurable and extensible. The Linux port to the Xtensa | |
38 | architecture supports all processor configurations and extensions, | |
39 | with reasonable minimum requirements. The Xtensa Linux project has | |
0ada4490 | 40 | a home page at <http://www.linux-xtensa.org/>. |
8e1a6dd2 | 41 | |
8e1a6dd2 | 42 | config RWSEM_XCHGADD_ALGORITHM |
35f9cd08 | 43 | def_bool y |
8e1a6dd2 | 44 | |
d4337aa5 | 45 | config GENERIC_HWEIGHT |
35f9cd08 | 46 | def_bool y |
d4337aa5 | 47 | |
f0d1b0b3 | 48 | config ARCH_HAS_ILOG2_U32 |
35f9cd08 | 49 | def_bool n |
f0d1b0b3 DH |
50 | |
51 | config ARCH_HAS_ILOG2_U64 | |
35f9cd08 | 52 | def_bool n |
f0d1b0b3 | 53 | |
ce816fa8 | 54 | config NO_IOPORT_MAP |
d046f77e | 55 | def_bool n |
5ea81769 | 56 | |
bdc80787 PA |
57 | config HZ |
58 | int | |
59 | default 100 | |
60 | ||
8e1a6dd2 | 61 | source "init/Kconfig" |
dc52ddc0 | 62 | source "kernel/Kconfig.freezer" |
8e1a6dd2 | 63 | |
8f371c75 MF |
64 | config LOCKDEP_SUPPORT |
65 | def_bool y | |
66 | ||
3e4196a5 MF |
67 | config STACKTRACE_SUPPORT |
68 | def_bool y | |
69 | ||
c92931b2 MF |
70 | config TRACE_IRQFLAGS_SUPPORT |
71 | def_bool y | |
72 | ||
35f9cd08 | 73 | config MMU |
de7c1c78 | 74 | def_bool n |
35f9cd08 | 75 | |
4c0d2141 JW |
76 | config VARIANT_IRQ_SWITCH |
77 | def_bool n | |
78 | ||
a1a2bdec BS |
79 | config HAVE_XTENSA_GPIO32 |
80 | def_bool n | |
81 | ||
8e1a6dd2 CZ |
82 | menu "Processor type and features" |
83 | ||
84 | choice | |
85 | prompt "Xtensa Processor Configuration" | |
173d6681 | 86 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 87 | |
173d6681 | 88 | config XTENSA_VARIANT_FSF |
0025427e | 89 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 90 | select MMU |
0025427e CZ |
91 | |
92 | config XTENSA_VARIANT_DC232B | |
93 | bool "dc232b - Diamond 232L Standard Core Rev.B (LE)" | |
35f9cd08 | 94 | select MMU |
a1a2bdec | 95 | select HAVE_XTENSA_GPIO32 |
0025427e | 96 | help |
35f9cd08 | 97 | This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). |
000af2c5 | 98 | |
d0b73b48 PD |
99 | config XTENSA_VARIANT_DC233C |
100 | bool "dc233c - Diamond 233L Standard Core Rev.C (LE)" | |
101 | select MMU | |
a1a2bdec | 102 | select HAVE_XTENSA_GPIO32 |
d0b73b48 PD |
103 | help |
104 | This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE). | |
105 | ||
420ae951 MF |
106 | config XTENSA_VARIANT_CUSTOM |
107 | bool "Custom Xtensa processor configuration" | |
420ae951 MF |
108 | select HAVE_XTENSA_GPIO32 |
109 | help | |
110 | Select this variant to use a custom Xtensa processor configuration. | |
111 | You will be prompted for a processor variant CORENAME. | |
8e1a6dd2 CZ |
112 | endchoice |
113 | ||
420ae951 MF |
114 | config XTENSA_VARIANT_CUSTOM_NAME |
115 | string "Xtensa Processor Custom Core Variant Name" | |
116 | depends on XTENSA_VARIANT_CUSTOM | |
117 | help | |
118 | Provide the name of a custom Xtensa processor variant. | |
119 | This CORENAME selects arch/xtensa/variant/CORENAME. | |
120 | Dont forget you have to select MMU if you have one. | |
121 | ||
122 | config XTENSA_VARIANT_NAME | |
123 | string | |
124 | default "dc232b" if XTENSA_VARIANT_DC232B | |
125 | default "dc233c" if XTENSA_VARIANT_DC233C | |
126 | default "fsf" if XTENSA_VARIANT_FSF | |
420ae951 MF |
127 | default XTENSA_VARIANT_CUSTOM_NAME if XTENSA_VARIANT_CUSTOM |
128 | ||
129 | config XTENSA_VARIANT_MMU | |
130 | bool "Core variant has a Full MMU (TLB, Pages, Protection, etc)" | |
131 | depends on XTENSA_VARIANT_CUSTOM | |
132 | default y | |
de7c1c78 | 133 | select MMU |
420ae951 MF |
134 | help |
135 | Build a Conventional Kernel with full MMU support, | |
136 | ie: it supports a TLB with auto-loading, page protection. | |
137 | ||
9bd46da4 MF |
138 | config XTENSA_VARIANT_HAVE_PERF_EVENTS |
139 | bool "Core variant has Performance Monitor Module" | |
140 | depends on XTENSA_VARIANT_CUSTOM | |
141 | default n | |
142 | help | |
143 | Enable if core variant has Performance Monitor Module with | |
144 | External Registers Interface. | |
145 | ||
146 | If unsure, say N. | |
147 | ||
e4629194 MF |
148 | config XTENSA_FAKE_NMI |
149 | bool "Treat PMM IRQ as NMI" | |
150 | depends on XTENSA_VARIANT_HAVE_PERF_EVENTS | |
151 | default n | |
152 | help | |
153 | If PMM IRQ is the only IRQ at EXCM level it is safe to | |
154 | treat it as NMI, which improves accuracy of profiling. | |
155 | ||
156 | If there are other interrupts at or above PMM IRQ priority level | |
157 | but not above the EXCM level, PMM IRQ still may be treated as NMI, | |
158 | but only if these IRQs are not used. There will be a build warning | |
159 | saying that this is not safe, and a bugcheck if one of these IRQs | |
160 | actually fire. | |
161 | ||
162 | If unsure, say N. | |
163 | ||
8e1a6dd2 CZ |
164 | config XTENSA_UNALIGNED_USER |
165 | bool "Unaligned memory access in use space" | |
35f9cd08 JW |
166 | help |
167 | The Xtensa architecture currently does not handle unaligned | |
168 | memory accesses in hardware but through an exception handler. | |
169 | Per default, unaligned memory accesses are disabled in user space. | |
8e1a6dd2 | 170 | |
35f9cd08 | 171 | Say Y here to enable unaligned memory access in user space. |
8e1a6dd2 | 172 | |
bd96efe1 | 173 | source "kernel/Kconfig.preempt" |
8e1a6dd2 | 174 | |
f615136c MF |
175 | config HAVE_SMP |
176 | bool "System Supports SMP (MX)" | |
de7c1c78 | 177 | depends on XTENSA_VARIANT_CUSTOM |
f615136c MF |
178 | select XTENSA_MX |
179 | help | |
180 | This option is use to indicate that the system-on-a-chip (SOC) | |
181 | supports Multiprocessing. Multiprocessor support implemented above | |
182 | the CPU core definition and currently needs to be selected manually. | |
183 | ||
184 | Multiprocessor support in implemented with external cache and | |
769a12a9 | 185 | interrupt controllers. |
f615136c MF |
186 | |
187 | The MX interrupt distributer adds Interprocessor Interrupts | |
188 | and causes the IRQ numbers to be increased by 4 for devices | |
189 | like the open cores ethernet driver and the serial interface. | |
190 | ||
191 | You still have to select "Enable SMP" to enable SMP on this SOC. | |
192 | ||
193 | config SMP | |
194 | bool "Enable Symmetric multi-processing support" | |
195 | depends on HAVE_SMP | |
f615136c MF |
196 | select GENERIC_SMP_IDLE_THREAD |
197 | help | |
198 | Enabled SMP Software; allows more than one CPU/CORE | |
199 | to be activated during startup. | |
200 | ||
201 | config NR_CPUS | |
202 | depends on SMP | |
203 | int "Maximum number of CPUs (2-32)" | |
204 | range 2 32 | |
205 | default "4" | |
206 | ||
49b424fe MF |
207 | config HOTPLUG_CPU |
208 | bool "Enable CPU hotplug support" | |
209 | depends on SMP | |
210 | help | |
211 | Say Y here to allow turning CPUs off and on. CPUs can be | |
212 | controlled through /sys/devices/system/cpu. | |
213 | ||
214 | Say N if you want to disable CPU hotplug. | |
215 | ||
e85e335f MF |
216 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
217 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
a4c6be5a | 218 | depends on !XTENSA_VARIANT_FSF && !XTENSA_VARIANT_DC232B |
73a3eed0 | 219 | default y if XTENSA_VARIANT_DC233C || XTENSA_VARIANT_CUSTOM |
e85e335f MF |
220 | help |
221 | Earlier version initialized the MMU in the exception vector | |
222 | before jumping to _startup in head.S and had an advantage that | |
223 | it was possible to place a software breakpoint at 'reset' and | |
224 | then enter your normal kernel breakpoints once the MMU was mapped | |
225 | to the kernel mappings (0XC0000000). | |
226 | ||
83fc61a5 | 227 | This unfortunately won't work for U-Boot and likely also wont |
e85e335f MF |
228 | work for using KEXEC to have a hot kernel ready for doing a |
229 | KDUMP. | |
230 | ||
231 | So now the MMU is initialized in head.S but it's necessary to | |
232 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
233 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
234 | to mapping the MMU and after mapping even if the area of low memory | |
235 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
236 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
237 | Linux configurations it seems reasonable to just assume they exist | |
238 | and leave this older mechanism for unfortunate souls that choose | |
239 | not to follow Tensilica's recommendation. | |
240 | ||
241 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
242 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
243 | ||
244 | If in doubt, say Y. | |
245 | ||
d39af902 MF |
246 | config KSEG_PADDR |
247 | hex "Physical address of the KSEG mapping" | |
248 | depends on INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX && MMU | |
249 | default 0x00000000 | |
250 | help | |
251 | This is the physical address where KSEG is mapped. Please refer to | |
252 | the chosen KSEG layout help for the required address alignment. | |
253 | Unpacked kernel image (including vectors) must be located completely | |
254 | within KSEG. | |
255 | Physical memory below this address is not available to linux. | |
256 | ||
257 | If unsure, leave the default value here. | |
258 | ||
a9f2fc62 MF |
259 | config KERNEL_LOAD_ADDRESS |
260 | hex "Kernel load address" | |
73a3eed0 MF |
261 | default 0x60003000 if !MMU |
262 | default 0x00003000 if MMU && INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX | |
263 | default 0xd0003000 if MMU && !INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX | |
a9f2fc62 MF |
264 | help |
265 | This is the address where the kernel is loaded. | |
266 | It is virtual address for MMUv2 configurations and physical address | |
267 | for all other configurations. | |
268 | ||
269 | If unsure, leave the default value here. | |
270 | ||
271 | config VECTORS_OFFSET | |
272 | hex "Kernel vectors offset" | |
273 | default 0x00003000 | |
274 | help | |
275 | This is the offset of the kernel image from the relocatable vectors | |
276 | base. | |
277 | ||
278 | If unsure, leave the default value here. | |
279 | ||
d39af902 MF |
280 | choice |
281 | prompt "KSEG layout" | |
282 | depends on MMU | |
283 | default XTENSA_KSEG_MMU_V2 | |
284 | ||
285 | config XTENSA_KSEG_MMU_V2 | |
286 | bool "MMUv2: 128MB cached + 128MB uncached" | |
287 | help | |
288 | MMUv2 compatible kernel memory map: TLB way 5 maps 128MB starting | |
289 | at KSEG_PADDR to 0xd0000000 with cache and to 0xd8000000 | |
290 | without cache. | |
291 | KSEG_PADDR must be aligned to 128MB. | |
292 | ||
293 | config XTENSA_KSEG_256M | |
294 | bool "256MB cached + 256MB uncached" | |
295 | depends on INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX | |
296 | help | |
297 | TLB way 6 maps 256MB starting at KSEG_PADDR to 0xb0000000 | |
298 | with cache and to 0xc0000000 without cache. | |
299 | KSEG_PADDR must be aligned to 256MB. | |
300 | ||
301 | config XTENSA_KSEG_512M | |
302 | bool "512MB cached + 512MB uncached" | |
303 | depends on INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX | |
304 | help | |
305 | TLB way 6 maps 512MB starting at KSEG_PADDR to 0xa0000000 | |
306 | with cache and to 0xc0000000 without cache. | |
307 | KSEG_PADDR must be aligned to 256MB. | |
308 | ||
309 | endchoice | |
310 | ||
65559100 MF |
311 | config HIGHMEM |
312 | bool "High Memory Support" | |
8a9de059 | 313 | depends on MMU |
65559100 MF |
314 | help |
315 | Linux can use the full amount of RAM in the system by | |
316 | default. However, the default MMUv2 setup only maps the | |
317 | lowermost 128 MB of memory linearly to the areas starting | |
318 | at 0xd0000000 (cached) and 0xd8000000 (uncached). | |
319 | When there are more than 128 MB memory in the system not | |
320 | all of it can be "permanently mapped" by the kernel. | |
321 | The physical memory that's not permanently mapped is called | |
322 | "high memory". | |
323 | ||
324 | If you are compiling a kernel which will never run on a | |
325 | machine with more than 128 MB total physical RAM, answer | |
326 | N here. | |
327 | ||
328 | If unsure, say Y. | |
329 | ||
9184289c MF |
330 | config FAST_SYSCALL_XTENSA |
331 | bool "Enable fast atomic syscalls" | |
332 | default n | |
333 | help | |
334 | fast_syscall_xtensa is a syscall that can make atomic operations | |
335 | on UP kernel when processor has no s32c1i support. | |
336 | ||
337 | This syscall is deprecated. It may have issues when called with | |
338 | invalid arguments. It is provided only for backwards compatibility. | |
339 | Only enable it if your userspace software requires it. | |
340 | ||
341 | If unsure, say N. | |
342 | ||
343 | config FAST_SYSCALL_SPILL_REGISTERS | |
344 | bool "Enable spill registers syscall" | |
345 | default n | |
346 | help | |
347 | fast_syscall_spill_registers is a syscall that spills all active | |
348 | register windows of a calling userspace task onto its stack. | |
349 | ||
350 | This syscall is deprecated. It may have issues when called with | |
351 | invalid arguments. It is provided only for backwards compatibility. | |
352 | Only enable it if your userspace software requires it. | |
353 | ||
354 | If unsure, say N. | |
355 | ||
8e1a6dd2 CZ |
356 | endmenu |
357 | ||
35f9cd08 JW |
358 | config XTENSA_CALIBRATE_CCOUNT |
359 | def_bool n | |
360 | help | |
361 | On some platforms (XT2000, for example), the CPU clock rate can | |
362 | vary. The frequency can be determined, however, by measuring | |
363 | against a well known, fixed frequency, such as an UART oscillator. | |
364 | ||
365 | config SERIAL_CONSOLE | |
366 | def_bool n | |
367 | ||
35f9cd08 JW |
368 | menu "Bus options" |
369 | ||
370 | config PCI | |
371 | bool "PCI support" | |
372 | default y | |
373 | help | |
374 | Find out whether you have a PCI motherboard. PCI is the name of a | |
375 | bus system, i.e. the way the CPU talks to the other stuff inside | |
376 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
377 | VESA. If you have PCI, say Y, otherwise N. | |
378 | ||
379 | source "drivers/pci/Kconfig" | |
380 | ||
35e71f90 CZ |
381 | endmenu |
382 | ||
8e1a6dd2 CZ |
383 | menu "Platform options" |
384 | ||
385 | choice | |
386 | prompt "Xtensa System Type" | |
387 | default XTENSA_PLATFORM_ISS | |
388 | ||
389 | config XTENSA_PLATFORM_ISS | |
390 | bool "ISS" | |
35f9cd08 JW |
391 | select XTENSA_CALIBRATE_CCOUNT |
392 | select SERIAL_CONSOLE | |
8e1a6dd2 CZ |
393 | help |
394 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
395 | ||
396 | config XTENSA_PLATFORM_XT2000 | |
397 | bool "XT2000" | |
4964527d | 398 | select HAVE_IDE |
8e1a6dd2 CZ |
399 | help |
400 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
401 | This hardware is capable of running a full Linux distribution. | |
402 | ||
0d456bad MF |
403 | config XTENSA_PLATFORM_XTFPGA |
404 | bool "XTFPGA" | |
61e47e9b | 405 | select ETHOC if ETHERNET |
3de00482 | 406 | select PLATFORM_WANT_DEFAULT_MEM if !MMU |
0d456bad | 407 | select SERIAL_CONSOLE |
0d456bad MF |
408 | select XTENSA_CALIBRATE_CCOUNT |
409 | help | |
410 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
411 | This hardware is capable of running a full Linux distribution. | |
412 | ||
8e1a6dd2 CZ |
413 | endchoice |
414 | ||
415 | ||
8e1a6dd2 CZ |
416 | config XTENSA_CPU_CLOCK |
417 | int "CPU clock rate [MHz]" | |
418 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 419 | default 16 |
8e1a6dd2 CZ |
420 | |
421 | config GENERIC_CALIBRATE_DELAY | |
422 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 423 | help |
82300bf4 | 424 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
425 | |
426 | config CMDLINE_BOOL | |
427 | bool "Default bootloader kernel arguments" | |
428 | ||
429 | config CMDLINE | |
430 | string "Initial kernel command string" | |
431 | depends on CMDLINE_BOOL | |
432 | default "console=ttyS0,38400 root=/dev/ram" | |
433 | help | |
434 | On some architectures (EBSA110 and CATS), there is currently no way | |
435 | for the boot loader to pass arguments to the kernel. For these | |
436 | architectures, you should supply some command-line options at build | |
437 | time by entering them here. As a minimum, you should specify the | |
438 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
439 | ||
da844a81 MF |
440 | config USE_OF |
441 | bool "Flattened Device Tree support" | |
442 | select OF | |
443 | select OF_EARLY_FLATTREE | |
4e7c84ec | 444 | select OF_RESERVED_MEM |
da844a81 MF |
445 | help |
446 | Include support for flattened device tree machine descriptions. | |
447 | ||
448 | config BUILTIN_DTB | |
449 | string "DTB to build into the kernel image" | |
450 | depends on OF | |
451 | ||
b6c7e873 VP |
452 | config BLK_DEV_SIMDISK |
453 | tristate "Host file-based simulated block device support" | |
454 | default n | |
7a0684cd | 455 | depends on XTENSA_PLATFORM_ISS && BLOCK |
b6c7e873 VP |
456 | help |
457 | Create block devices that map to files in the host file system. | |
458 | Device binding to host file may be changed at runtime via proc | |
459 | interface provided the device is not in use. | |
460 | ||
461 | config BLK_DEV_SIMDISK_COUNT | |
462 | int "Number of host file-based simulated block devices" | |
463 | range 1 10 | |
464 | depends on BLK_DEV_SIMDISK | |
465 | default 2 | |
466 | help | |
467 | This is the default minimal number of created block devices. | |
468 | Kernel/module parameter 'simdisk_count' may be used to change this | |
469 | value at runtime. More file names (but no more than 10) may be | |
470 | specified as parameters, simdisk_count grows accordingly. | |
471 | ||
472 | config SIMDISK0_FILENAME | |
473 | string "Host filename for the first simulated device" | |
474 | depends on BLK_DEV_SIMDISK = y | |
475 | default "" | |
476 | help | |
477 | Attach a first simdisk to a host file. Conventionally, this file | |
478 | contains a root file system. | |
479 | ||
480 | config SIMDISK1_FILENAME | |
481 | string "Host filename for the second simulated device" | |
482 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
483 | default "" | |
484 | help | |
485 | Another simulated disk in a host file for a buildroot-independent | |
486 | storage. | |
487 | ||
82300bf4 CZ |
488 | source "mm/Kconfig" |
489 | ||
a9df9338 MF |
490 | config FORCE_MAX_ZONEORDER |
491 | int "Maximum zone order" | |
492 | default "11" | |
493 | help | |
494 | The kernel memory allocator divides physically contiguous memory | |
495 | blocks into "zones", where each zone is a power of two number of | |
496 | pages. This option selects the largest power of two that the kernel | |
497 | keeps in the memory allocator. If you need to allocate very large | |
498 | blocks of physically contiguous memory, then you may need to | |
499 | increase this value. | |
500 | ||
501 | This config option is actually maximum order plus one. For example, | |
502 | a value of 11 means that the largest free memory block is 2^10 pages. | |
503 | ||
8e1a6dd2 CZ |
504 | source "drivers/pcmcia/Kconfig" |
505 | ||
3932b9ca MF |
506 | config PLATFORM_WANT_DEFAULT_MEM |
507 | def_bool n | |
508 | ||
509 | config DEFAULT_MEM_START | |
510 | hex "Physical address of the default memory area start" | |
511 | depends on PLATFORM_WANT_DEFAULT_MEM | |
512 | default 0x00000000 if MMU | |
d9eb3cb2 | 513 | default 0x60000000 if !MMU |
3932b9ca | 514 | help |
3de00482 MF |
515 | This is the base address of the default memory area. |
516 | Default memory area has platform-specific meaning, it may be used | |
517 | for e.g. early cache initialization. | |
3932b9ca MF |
518 | |
519 | If unsure, leave the default value here. | |
520 | ||
521 | config DEFAULT_MEM_SIZE | |
522 | hex "Maximal size of the default memory area" | |
523 | depends on PLATFORM_WANT_DEFAULT_MEM | |
524 | default 0x04000000 | |
525 | help | |
3de00482 MF |
526 | This is the size of the default memory area. |
527 | Default memory area has platform-specific meaning, it may be used | |
528 | for e.g. early cache initialization. | |
3932b9ca MF |
529 | |
530 | If unsure, leave the default value here. | |
531 | ||
4949009e MF |
532 | config XTFPGA_LCD |
533 | bool "Enable XTFPGA LCD driver" | |
534 | depends on XTENSA_PLATFORM_XTFPGA | |
535 | default n | |
536 | help | |
537 | There's a 2x16 LCD on most of XTFPGA boards, kernel may output | |
538 | progress messages there during bootup/shutdown. It may be useful | |
539 | during board bringup. | |
540 | ||
541 | If unsure, say N. | |
542 | ||
543 | config XTFPGA_LCD_BASE_ADDR | |
544 | hex "XTFPGA LCD base address" | |
545 | depends on XTFPGA_LCD | |
546 | default "0x0d0c0000" | |
547 | help | |
548 | Base address of the LCD controller inside KIO region. | |
549 | Different boards from XTFPGA family have LCD controller at different | |
550 | addresses. Please consult prototyping user guide for your board for | |
551 | the correct address. Wrong address here may lead to hardware lockup. | |
552 | ||
553 | config XTFPGA_LCD_8BIT_ACCESS | |
554 | bool "Use 8-bit access to XTFPGA LCD" | |
555 | depends on XTFPGA_LCD | |
556 | default n | |
557 | help | |
558 | LCD may be connected with 4- or 8-bit interface, 8-bit access may | |
559 | only be used with 8-bit interface. Please consult prototyping user | |
560 | guide for your board for the correct interface width. | |
561 | ||
8e1a6dd2 CZ |
562 | endmenu |
563 | ||
cab00891 | 564 | menu "Executable file formats" |
8e1a6dd2 | 565 | |
8e1a6dd2 CZ |
566 | source "fs/Kconfig.binfmt" |
567 | ||
568 | endmenu | |
569 | ||
e00d8b2f MF |
570 | menu "Power management options" |
571 | ||
572 | source "kernel/power/Kconfig" | |
573 | ||
574 | endmenu | |
575 | ||
d5950b43 SR |
576 | source "net/Kconfig" |
577 | ||
8e1a6dd2 CZ |
578 | source "drivers/Kconfig" |
579 | ||
580 | source "fs/Kconfig" | |
581 | ||
8e1a6dd2 CZ |
582 | source "arch/xtensa/Kconfig.debug" |
583 | ||
584 | source "security/Kconfig" | |
585 | ||
586 | source "crypto/Kconfig" | |
587 | ||
588 | source "lib/Kconfig" | |
589 | ||
590 |