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