Commit | Line | Data |
---|---|---|
867e359b | 1 | # For a description of the syntax of this configuration file, |
5fb682b0 | 2 | # see Documentation/kbuild/kconfig-language.txt. |
867e359b | 3 | |
8df27406 | 4 | config TILE |
867e359b | 5 | def_bool y |
8d61dd7d ZL |
6 | select HAVE_PERF_EVENTS |
7 | select USE_PMC if PERF_EVENTS | |
41bb38fc CM |
8 | select HAVE_DMA_ATTRS |
9 | select HAVE_DMA_API_DEBUG | |
8df27406 TG |
10 | select HAVE_KVM if !TILEGX |
11 | select GENERIC_FIND_FIRST_BIT | |
7ac57a89 | 12 | select SYSCTL_EXCEPTION_TRACE |
8df27406 | 13 | select CC_OPTIMIZE_FOR_SIZE |
b69ec42b | 14 | select HAVE_DEBUG_KMEMLEAK |
8df27406 TG |
15 | select GENERIC_IRQ_PROBE |
16 | select GENERIC_PENDING_IRQ if SMP | |
61a16741 | 17 | select GENERIC_IRQ_SHOW |
9b2a60c4 | 18 | select HAVE_DEBUG_BUGVERBOSE |
4febd95a | 19 | select VIRT_TO_BUS |
f133ecca | 20 | select SYS_HYPERVISOR |
446f24d1 | 21 | select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS |
8d695143 | 22 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
4ec008d6 | 23 | select GENERIC_CLOCKEVENTS |
786d35d4 | 24 | select MODULES_USE_ELF_RELA |
969f6fe6 | 25 | select HAVE_ARCH_TRACEHOOK |
ef567f25 | 26 | select HAVE_SYSCALL_TRACEPOINTS |
47ad7b9b | 27 | select USER_STACKTRACE_SUPPORT |
adf6d9b3 | 28 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
d1a1dc0b | 29 | select HAVE_DEBUG_STACKOVERFLOW |
49cf78ef | 30 | select ARCH_WANT_FRAME_POINTERS |
49e4e156 | 31 | select HAVE_CONTEXT_TRACKING |
b01aec9b | 32 | select EDAC_SUPPORT |
5bf6c07a CM |
33 | select GENERIC_STRNCPY_FROM_USER |
34 | select GENERIC_STRNLEN_USER | |
a0ddef81 | 35 | select HAVE_ARCH_SECCOMP_FILTER |
867e359b | 36 | |
8df27406 TG |
37 | # FIXME: investigate whether we need/want these options. |
38 | # select HAVE_IOREMAP_PROT | |
5fb682b0 CM |
39 | # select HAVE_OPTPROBES |
40 | # select HAVE_REGS_AND_STACK_ACCESS_API | |
41 | # select HAVE_HW_BREAKPOINT | |
42 | # select PERF_EVENTS | |
43 | # select HAVE_USER_RETURN_NOTIFIER | |
44 | # config NO_BOOTMEM | |
45 | # config ARCH_SUPPORTS_DEBUG_PAGEALLOC | |
46 | # config HUGETLB_PAGE_SIZE_VARIABLE | |
867e359b | 47 | |
8df27406 | 48 | config MMU |
867e359b CM |
49 | def_bool y |
50 | ||
8df27406 | 51 | config GENERIC_CSUM |
867e359b | 52 | def_bool y |
867e359b | 53 | |
867e359b CM |
54 | config HAVE_ARCH_ALLOC_REMAP |
55 | def_bool y | |
56 | ||
57 | config HAVE_SETUP_PER_CPU_AREA | |
58 | def_bool y | |
59 | ||
60 | config NEED_PER_CPU_PAGE_FIRST_CHUNK | |
5fb682b0 | 61 | def_bool y |
867e359b CM |
62 | |
63 | config SYS_SUPPORTS_HUGETLBFS | |
64 | def_bool y | |
65 | ||
621b1955 CM |
66 | # Support for additional huge page sizes besides HPAGE_SIZE. |
67 | # The software support is currently only present in the TILE-Gx | |
68 | # hypervisor. TILEPro in any case does not support page sizes | |
69 | # larger than the default HPAGE_SIZE. | |
70 | config HUGETLB_SUPER_PAGES | |
71 | depends on HUGETLB_PAGE && TILEGX | |
72 | def_bool y | |
73 | ||
4a556f4f CM |
74 | config GENERIC_TIME_VSYSCALL |
75 | def_bool y | |
76 | ||
8e3441eb ZL |
77 | # Enable PMC if PERF_EVENTS, OPROFILE, or WATCHPOINTS are enabled. |
78 | config USE_PMC | |
79 | bool | |
80 | ||
25985edc | 81 | # FIXME: tilegx can implement a more efficient rwsem. |
867e359b CM |
82 | config RWSEM_GENERIC_SPINLOCK |
83 | def_bool y | |
84 | ||
867e359b CM |
85 | # We only support gcc 4.4 and above, so this should work. |
86 | config ARCH_SUPPORTS_OPTIMIZED_INLINING | |
87 | def_bool y | |
88 | ||
89 | config ARCH_PHYS_ADDR_T_64BIT | |
90 | def_bool y | |
91 | ||
d31eb519 FT |
92 | config ARCH_DMA_ADDR_T_64BIT |
93 | def_bool y | |
94 | ||
3d1e8a81 CM |
95 | config NEED_DMA_MAP_STATE |
96 | def_bool y | |
97 | ||
41bb38fc CM |
98 | config ARCH_HAS_DMA_SET_COHERENT_MASK |
99 | bool | |
100 | ||
867e359b CM |
101 | config LOCKDEP_SUPPORT |
102 | def_bool y | |
103 | ||
104 | config STACKTRACE_SUPPORT | |
105 | def_bool y | |
106 | select STACKTRACE | |
107 | ||
108 | # We use discontigmem for now; at some point we may want to switch | |
109 | # to sparsemem (Tilera bug 7996). | |
110 | config ARCH_DISCONTIGMEM_ENABLE | |
111 | def_bool y | |
112 | ||
113 | config ARCH_DISCONTIGMEM_DEFAULT | |
114 | def_bool y | |
115 | ||
116 | config TRACE_IRQFLAGS_SUPPORT | |
117 | def_bool y | |
118 | ||
119 | config STRICT_DEVMEM | |
120 | def_bool y | |
121 | ||
122 | # SMP is required for Tilera Linux. | |
123 | config SMP | |
124 | def_bool y | |
125 | ||
867e359b | 126 | config HVC_TILE |
4f73bc4d | 127 | depends on TTY |
867e359b | 128 | select HVC_DRIVER |
bda0f5ba | 129 | select HVC_IRQ if TILEGX |
867e359b CM |
130 | def_bool y |
131 | ||
41dd496c CM |
132 | # Building with ARCH=tilegx (or ARCH=tile) implies using the |
133 | # 64-bit TILE-Gx toolchain, so force CONFIG_TILEGX on. | |
867e359b | 134 | config TILEGX |
41dd496c | 135 | def_bool ARCH != "tilepro" |
b26d851f TG |
136 | select SPARSE_IRQ |
137 | select GENERIC_IRQ_LEGACY_ALLOC_HWIRQ | |
a61fd5e3 | 138 | select HAVE_FUNCTION_TRACER |
a61fd5e3 TL |
139 | select HAVE_FUNCTION_GRAPH_TRACER |
140 | select HAVE_DYNAMIC_FTRACE | |
141 | select HAVE_FTRACE_MCOUNT_RECORD | |
3fa17c39 TL |
142 | select HAVE_KPROBES |
143 | select HAVE_KRETPROBES | |
8157107b | 144 | select HAVE_ARCH_KGDB |
3e24765d | 145 | select ARCH_SUPPORTS_ATOMIC_RMW |
65a792e8 | 146 | select HAVE_ARCH_JUMP_LABEL |
867e359b | 147 | |
acd1a19e CM |
148 | config TILEPRO |
149 | def_bool !TILEGX | |
150 | ||
867e359b | 151 | config 64BIT |
acd1a19e | 152 | def_bool TILEGX |
867e359b CM |
153 | |
154 | config ARCH_DEFCONFIG | |
155 | string | |
3d1e8a81 | 156 | default "arch/tile/configs/tilepro_defconfig" if !TILEGX |
867e359b CM |
157 | default "arch/tile/configs/tilegx_defconfig" if TILEGX |
158 | ||
909d45e6 KS |
159 | config PGTABLE_LEVELS |
160 | int | |
161 | default 3 if 64BIT | |
162 | default 2 | |
163 | ||
867e359b CM |
164 | source "init/Kconfig" |
165 | ||
99a844b7 CM |
166 | source "kernel/Kconfig.freezer" |
167 | ||
867e359b CM |
168 | menu "Tilera-specific configuration" |
169 | ||
170 | config NR_CPUS | |
171 | int "Maximum number of tiles (2-255)" | |
172 | range 2 255 | |
173 | depends on SMP | |
174 | default "64" | |
175 | ---help--- | |
176 | Building with 64 is the recommended value, but a slightly | |
177 | smaller kernel memory footprint results from using a smaller | |
178 | value on chips with fewer tiles. | |
179 | ||
d5d14ed6 CM |
180 | if TILEGX |
181 | ||
182 | choice | |
183 | prompt "Kernel page size" | |
184 | default PAGE_SIZE_64KB | |
185 | help | |
186 | This lets you select the page size of the kernel. For best | |
187 | performance on memory-intensive applications, a page size of 64KB | |
188 | is recommended. For workloads involving many small files, many | |
189 | connections, etc., it may be better to select 16KB, which uses | |
190 | memory more efficiently at some cost in TLB performance. | |
191 | ||
192 | Note that this option is TILE-Gx specific; currently | |
193 | TILEPro page size is set by rebuilding the hypervisor. | |
194 | ||
195 | config PAGE_SIZE_16KB | |
196 | bool "16KB" | |
197 | ||
198 | config PAGE_SIZE_64KB | |
199 | bool "64KB" | |
200 | ||
201 | endchoice | |
202 | ||
203 | endif | |
204 | ||
867e359b CM |
205 | source "kernel/Kconfig.hz" |
206 | ||
207 | config KEXEC | |
208 | bool "kexec system call" | |
2965faa5 | 209 | select KEXEC_CORE |
867e359b CM |
210 | ---help--- |
211 | kexec is a system call that implements the ability to shutdown your | |
212 | current kernel, and to start another kernel. It is like a reboot | |
213 | but it is independent of the system firmware. It is used | |
214 | to implement the "mboot" Tilera booter. | |
215 | ||
216 | The name comes from the similarity to the exec system call. | |
217 | ||
218 | config COMPAT | |
219 | bool "Support 32-bit TILE-Gx binaries in addition to 64-bit" | |
220 | depends on TILEGX | |
221 | select COMPAT_BINFMT_ELF | |
222 | default y | |
223 | ---help--- | |
224 | If enabled, the kernel will support running TILE-Gx binaries | |
225 | that were built with the -m32 option. | |
226 | ||
a0ddef81 CM |
227 | config SECCOMP |
228 | bool "Enable seccomp to safely compute untrusted bytecode" | |
229 | depends on PROC_FS | |
230 | help | |
231 | This kernel feature is useful for number crunching applications | |
232 | that may need to compute untrusted bytecode during their | |
233 | execution. By using pipes or other transports made available to | |
234 | the process as file descriptors supporting the read/write | |
235 | syscalls, it's possible to isolate those applications in | |
236 | their own address space using seccomp. Once seccomp is | |
237 | enabled via prctl, it cannot be disabled and the task is only | |
238 | allowed to execute a few safe syscalls defined by each seccomp | |
239 | mode. | |
240 | ||
241 | If unsure, say N. | |
242 | ||
867e359b CM |
243 | config SYSVIPC_COMPAT |
244 | def_bool y | |
245 | depends on COMPAT && SYSVIPC | |
246 | ||
d7c96611 | 247 | # We do not currently support disabling HIGHMEM on tilepro. |
867e359b CM |
248 | config HIGHMEM |
249 | bool # "Support for more than 512 MB of RAM" | |
250 | default !TILEGX | |
251 | ---help--- | |
252 | Linux can use the full amount of RAM in the system by | |
253 | default. However, the address space of TILE processors is | |
254 | only 4 Gigabytes large. That means that, if you have a large | |
255 | amount of physical memory, not all of it can be "permanently | |
256 | mapped" by the kernel. The physical memory that's not | |
257 | permanently mapped is called "high memory". | |
258 | ||
259 | If you are compiling a kernel which will never run on a | |
260 | machine with more than 512 MB total physical RAM, answer | |
261 | "false" here. This will result in the kernel mapping all of | |
262 | physical memory into the top 1 GB of virtual memory space. | |
263 | ||
264 | If unsure, say "true". | |
265 | ||
eef015c8 CM |
266 | config ZONE_DMA |
267 | def_bool y | |
268 | ||
41bb38fc CM |
269 | config IOMMU_HELPER |
270 | bool | |
271 | ||
272 | config NEED_SG_DMA_LENGTH | |
273 | bool | |
274 | ||
275 | config SWIOTLB | |
276 | bool | |
277 | default TILEGX | |
278 | select IOMMU_HELPER | |
279 | select NEED_SG_DMA_LENGTH | |
280 | select ARCH_HAS_DMA_SET_COHERENT_MASK | |
281 | ||
867e359b CM |
282 | # We do not currently support disabling NUMA. |
283 | config NUMA | |
284 | bool # "NUMA Memory Allocation and Scheduler Support" | |
285 | depends on SMP && DISCONTIGMEM | |
286 | default y | |
287 | ---help--- | |
288 | NUMA memory allocation is required for TILE processors | |
289 | unless booting with memory striping enabled in the | |
290 | hypervisor, or with only a single memory controller. | |
291 | It is recommended that this option always be enabled. | |
292 | ||
293 | config NODES_SHIFT | |
294 | int "Log base 2 of the max number of memory controllers" | |
295 | default 2 | |
296 | depends on NEED_MULTIPLE_NODES | |
297 | ---help--- | |
298 | By default, 2, i.e. 2^2 == 4 DDR2 controllers. | |
299 | In a system with more controllers, this value should be raised. | |
300 | ||
867e359b CM |
301 | choice |
302 | depends on !TILEGX | |
6a108a14 | 303 | prompt "Memory split" if EXPERT |
867e359b CM |
304 | default VMSPLIT_3G |
305 | ---help--- | |
306 | Select the desired split between kernel and user memory. | |
307 | ||
308 | If the address range available to the kernel is less than the | |
309 | physical memory installed, the remaining memory will be available | |
310 | as "high memory". Accessing high memory is a little more costly | |
311 | than low memory, as it needs to be mapped into the kernel first. | |
312 | Note that increasing the kernel address space limits the range | |
313 | available to user programs, making the address space there | |
314 | tighter. Selecting anything other than the default 3G/1G split | |
315 | will also likely make your kernel incompatible with binary-only | |
316 | kernel modules. | |
317 | ||
318 | If you are not absolutely sure what you are doing, leave this | |
319 | option alone! | |
320 | ||
5592840b | 321 | config VMSPLIT_3_75G |
867e359b | 322 | bool "3.75G/0.25G user/kernel split (no kernel networking)" |
5592840b | 323 | config VMSPLIT_3_5G |
867e359b CM |
324 | bool "3.5G/0.5G user/kernel split" |
325 | config VMSPLIT_3G | |
326 | bool "3G/1G user/kernel split" | |
09c17eab CM |
327 | config VMSPLIT_2_75G |
328 | bool "2.75G/1.25G user/kernel split (for full 1G low memory)" | |
329 | config VMSPLIT_2_5G | |
330 | bool "2.5G/1.5G user/kernel split" | |
331 | config VMSPLIT_2_25G | |
332 | bool "2.25G/1.75G user/kernel split" | |
867e359b CM |
333 | config VMSPLIT_2G |
334 | bool "2G/2G user/kernel split" | |
335 | config VMSPLIT_1G | |
336 | bool "1G/3G user/kernel split" | |
337 | endchoice | |
338 | ||
339 | config PAGE_OFFSET | |
340 | hex | |
884197f7 | 341 | depends on !64BIT |
5592840b CM |
342 | default 0xF0000000 if VMSPLIT_3_75G |
343 | default 0xE0000000 if VMSPLIT_3_5G | |
09c17eab CM |
344 | default 0xB0000000 if VMSPLIT_2_75G |
345 | default 0xA0000000 if VMSPLIT_2_5G | |
346 | default 0x90000000 if VMSPLIT_2_25G | |
867e359b CM |
347 | default 0x80000000 if VMSPLIT_2G |
348 | default 0x40000000 if VMSPLIT_1G | |
349 | default 0xC0000000 | |
350 | ||
351 | source "mm/Kconfig" | |
352 | ||
bc1a298f CM |
353 | source "kernel/Kconfig.preempt" |
354 | ||
867e359b CM |
355 | config CMDLINE_BOOL |
356 | bool "Built-in kernel command line" | |
357 | default n | |
358 | ---help--- | |
359 | Allow for specifying boot arguments to the kernel at | |
360 | build time. On some systems (e.g. embedded ones), it is | |
361 | necessary or convenient to provide some or all of the | |
362 | kernel boot arguments with the kernel itself (that is, | |
363 | to not rely on the boot loader to provide them.) | |
364 | ||
365 | To compile command line arguments into the kernel, | |
366 | set this option to 'Y', then fill in the | |
367 | the boot arguments in CONFIG_CMDLINE. | |
368 | ||
369 | Systems with fully functional boot loaders (e.g. mboot, or | |
370 | if booting over PCI) should leave this option set to 'N'. | |
371 | ||
372 | config CMDLINE | |
373 | string "Built-in kernel command string" | |
374 | depends on CMDLINE_BOOL | |
375 | default "" | |
376 | ---help--- | |
377 | Enter arguments here that should be compiled into the kernel | |
378 | image and used at boot time. If the boot loader provides a | |
379 | command line at boot time, it is appended to this string to | |
380 | form the full kernel command line, when the system boots. | |
381 | ||
382 | However, you can use the CONFIG_CMDLINE_OVERRIDE option to | |
383 | change this behavior. | |
384 | ||
385 | In most cases, the command line (whether built-in or provided | |
386 | by the boot loader) should specify the device for the root | |
387 | file system. | |
388 | ||
389 | config CMDLINE_OVERRIDE | |
390 | bool "Built-in command line overrides boot loader arguments" | |
391 | default n | |
392 | depends on CMDLINE_BOOL | |
393 | ---help--- | |
394 | Set this option to 'Y' to have the kernel ignore the boot loader | |
395 | command line, and use ONLY the built-in command line. | |
396 | ||
397 | This is used to work around broken boot loaders. This should | |
398 | be set to 'N' under normal conditions. | |
399 | ||
400 | config VMALLOC_RESERVE | |
401 | hex | |
ad2a4bb3 | 402 | default 0x2000000 |
867e359b | 403 | |
9f9c0382 CM |
404 | config HARDWALL |
405 | bool "Hardwall support to allow access to user dynamic network" | |
406 | default y | |
407 | ||
a78c942d CM |
408 | config KERNEL_PL |
409 | int "Processor protection level for kernel" | |
410 | range 1 2 | |
c539914d CM |
411 | default 2 if TILEGX |
412 | default 1 if !TILEGX | |
a78c942d | 413 | ---help--- |
c539914d CM |
414 | Since MDE 4.2, the Tilera hypervisor runs the kernel |
415 | at PL2 by default. If running under an older hypervisor, | |
416 | or as a KVM guest, you must run at PL1. (The current | |
417 | hypervisor may also be recompiled with "make HV_PL=2" to | |
418 | allow it to run a kernel at PL1, but clients running at PL1 | |
419 | are not expected to be supported indefinitely.) | |
420 | ||
421 | If you're not sure, don't change the default. | |
a78c942d | 422 | |
37b82b5d CM |
423 | source "arch/tile/gxio/Kconfig" |
424 | ||
867e359b CM |
425 | endmenu # Tilera-specific configuration |
426 | ||
427 | menu "Bus options" | |
428 | ||
f02cbbe6 CM |
429 | config PCI |
430 | bool "PCI support" | |
431 | default y | |
432 | select PCI_DOMAINS | |
84550121 | 433 | select GENERIC_PCI_IOMAP |
12962267 | 434 | select TILE_GXIO_TRIO if TILEGX |
12962267 | 435 | select PCI_MSI if TILEGX |
f02cbbe6 CM |
436 | ---help--- |
437 | Enable PCI root complex support, so PCIe endpoint devices can | |
438 | be attached to the Tile chip. Many, but not all, PCI devices | |
439 | are supported under Tilera's root complex driver. | |
440 | ||
441 | config PCI_DOMAINS | |
442 | bool | |
443 | ||
867e359b CM |
444 | config NO_IOMEM |
445 | def_bool !PCI | |
446 | ||
ce816fa8 | 447 | config NO_IOPORT_MAP |
867e359b CM |
448 | def_bool !PCI |
449 | ||
cf89c426 CM |
450 | config TILE_PCI_IO |
451 | bool "PCI I/O space support" | |
452 | default n | |
453 | depends on PCI | |
454 | depends on TILEGX | |
455 | ---help--- | |
456 | Enable PCI I/O space support on TILEGx. Since the PCI I/O space | |
457 | is used by few modern PCIe endpoint devices, its support is disabled | |
458 | by default to save the TRIO PIO Region resource for other purposes. | |
459 | ||
867e359b CM |
460 | source "drivers/pci/Kconfig" |
461 | ||
f62f73f6 CM |
462 | source "drivers/pci/pcie/Kconfig" |
463 | ||
47fc28bf CM |
464 | config TILE_USB |
465 | tristate "Tilera USB host adapter support" | |
466 | default y | |
467 | depends on USB | |
468 | depends on TILEGX | |
469 | select TILE_GXIO_USB_HOST | |
470 | ---help--- | |
471 | Provides USB host adapter support for the built-in EHCI and OHCI | |
472 | interfaces on TILE-Gx chips. | |
473 | ||
867e359b CM |
474 | source "drivers/pci/hotplug/Kconfig" |
475 | ||
476 | endmenu | |
477 | ||
478 | menu "Executable file formats" | |
479 | ||
867e359b CM |
480 | source "fs/Kconfig.binfmt" |
481 | ||
482 | endmenu | |
483 | ||
484 | source "net/Kconfig" | |
485 | ||
486 | source "drivers/Kconfig" | |
487 | ||
488 | source "fs/Kconfig" | |
489 | ||
490 | source "arch/tile/Kconfig.debug" | |
491 | ||
492 | source "security/Kconfig" | |
493 | ||
494 | source "crypto/Kconfig" | |
495 | ||
496 | source "lib/Kconfig" | |
a78c942d CM |
497 | |
498 | source "arch/tile/kvm/Kconfig" |