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