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