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 |
41bb38fc CM |
6 | select HAVE_DMA_ATTRS |
7 | select HAVE_DMA_API_DEBUG | |
8df27406 TG |
8 | select HAVE_KVM if !TILEGX |
9 | select GENERIC_FIND_FIRST_BIT | |
7ac57a89 | 10 | select SYSCTL_EXCEPTION_TRACE |
8df27406 TG |
11 | select USE_GENERIC_SMP_HELPERS |
12 | select CC_OPTIMIZE_FOR_SIZE | |
b69ec42b | 13 | select HAVE_DEBUG_KMEMLEAK |
8df27406 TG |
14 | select HAVE_GENERIC_HARDIRQS |
15 | select GENERIC_IRQ_PROBE | |
16 | select GENERIC_PENDING_IRQ if SMP | |
61a16741 | 17 | select GENERIC_IRQ_SHOW |
9b2a60c4 | 18 | select HAVE_DEBUG_BUGVERBOSE |
e6d9668e | 19 | select HAVE_SYSCALL_WRAPPERS if TILEGX |
4febd95a | 20 | select VIRT_TO_BUS |
f133ecca | 21 | select SYS_HYPERVISOR |
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 |
867e359b | 27 | |
8df27406 TG |
28 | # FIXME: investigate whether we need/want these options. |
29 | # select HAVE_IOREMAP_PROT | |
5fb682b0 CM |
30 | # select HAVE_OPTPROBES |
31 | # select HAVE_REGS_AND_STACK_ACCESS_API | |
32 | # select HAVE_HW_BREAKPOINT | |
33 | # select PERF_EVENTS | |
34 | # select HAVE_USER_RETURN_NOTIFIER | |
35 | # config NO_BOOTMEM | |
36 | # config ARCH_SUPPORTS_DEBUG_PAGEALLOC | |
37 | # config HUGETLB_PAGE_SIZE_VARIABLE | |
867e359b | 38 | |
8df27406 | 39 | config MMU |
867e359b CM |
40 | def_bool y |
41 | ||
8df27406 | 42 | config GENERIC_CSUM |
867e359b | 43 | def_bool y |
867e359b CM |
44 | |
45 | config SEMAPHORE_SLEEPERS | |
46 | def_bool y | |
47 | ||
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 | ||
25985edc | 68 | # FIXME: tilegx can implement a more efficient rwsem. |
867e359b CM |
69 | config RWSEM_GENERIC_SPINLOCK |
70 | def_bool y | |
71 | ||
72 | # We have a very flat architecture from a migration point of view, | |
73 | # so save boot time by presetting this (particularly useful on tile-sim). | |
74 | config DEFAULT_MIGRATION_COST | |
75 | int | |
76 | default "10000000" | |
77 | ||
78 | # We only support gcc 4.4 and above, so this should work. | |
79 | config ARCH_SUPPORTS_OPTIMIZED_INLINING | |
80 | def_bool y | |
81 | ||
82 | config ARCH_PHYS_ADDR_T_64BIT | |
83 | def_bool y | |
84 | ||
d31eb519 FT |
85 | config ARCH_DMA_ADDR_T_64BIT |
86 | def_bool y | |
87 | ||
3d1e8a81 CM |
88 | config NEED_DMA_MAP_STATE |
89 | def_bool y | |
90 | ||
41bb38fc CM |
91 | config ARCH_HAS_DMA_SET_COHERENT_MASK |
92 | bool | |
93 | ||
867e359b CM |
94 | config LOCKDEP_SUPPORT |
95 | def_bool y | |
96 | ||
97 | config STACKTRACE_SUPPORT | |
98 | def_bool y | |
99 | select STACKTRACE | |
100 | ||
101 | # We use discontigmem for now; at some point we may want to switch | |
102 | # to sparsemem (Tilera bug 7996). | |
103 | config ARCH_DISCONTIGMEM_ENABLE | |
104 | def_bool y | |
105 | ||
106 | config ARCH_DISCONTIGMEM_DEFAULT | |
107 | def_bool y | |
108 | ||
109 | config TRACE_IRQFLAGS_SUPPORT | |
110 | def_bool y | |
111 | ||
112 | config STRICT_DEVMEM | |
113 | def_bool y | |
114 | ||
115 | # SMP is required for Tilera Linux. | |
116 | config SMP | |
117 | def_bool y | |
118 | ||
119 | # Allow checking for compile-time determined overflow errors in | |
120 | # copy_from_user(). There are still unprovable places in the | |
121 | # generic code as of 2.6.34, so this option is not really compatible | |
122 | # with -Werror, which is more useful in general. | |
123 | config DEBUG_COPY_FROM_USER | |
124 | def_bool n | |
125 | ||
126 | config HVC_TILE | |
4f73bc4d | 127 | depends on TTY |
867e359b CM |
128 | select HVC_DRIVER |
129 | def_bool y | |
130 | ||
867e359b | 131 | config TILEGX |
867e359b CM |
132 | bool "Building with TILE-Gx (64-bit) compiler and toolchain" |
133 | ||
acd1a19e CM |
134 | config TILEPRO |
135 | def_bool !TILEGX | |
136 | ||
867e359b | 137 | config 64BIT |
acd1a19e | 138 | def_bool TILEGX |
867e359b CM |
139 | |
140 | config ARCH_DEFCONFIG | |
141 | string | |
3d1e8a81 | 142 | default "arch/tile/configs/tilepro_defconfig" if !TILEGX |
867e359b CM |
143 | default "arch/tile/configs/tilegx_defconfig" if TILEGX |
144 | ||
145 | source "init/Kconfig" | |
146 | ||
99a844b7 CM |
147 | source "kernel/Kconfig.freezer" |
148 | ||
867e359b CM |
149 | menu "Tilera-specific configuration" |
150 | ||
151 | config NR_CPUS | |
152 | int "Maximum number of tiles (2-255)" | |
153 | range 2 255 | |
154 | depends on SMP | |
155 | default "64" | |
156 | ---help--- | |
157 | Building with 64 is the recommended value, but a slightly | |
158 | smaller kernel memory footprint results from using a smaller | |
159 | value on chips with fewer tiles. | |
160 | ||
d5d14ed6 CM |
161 | if TILEGX |
162 | ||
163 | choice | |
164 | prompt "Kernel page size" | |
165 | default PAGE_SIZE_64KB | |
166 | help | |
167 | This lets you select the page size of the kernel. For best | |
168 | performance on memory-intensive applications, a page size of 64KB | |
169 | is recommended. For workloads involving many small files, many | |
170 | connections, etc., it may be better to select 16KB, which uses | |
171 | memory more efficiently at some cost in TLB performance. | |
172 | ||
173 | Note that this option is TILE-Gx specific; currently | |
174 | TILEPro page size is set by rebuilding the hypervisor. | |
175 | ||
176 | config PAGE_SIZE_16KB | |
177 | bool "16KB" | |
178 | ||
179 | config PAGE_SIZE_64KB | |
180 | bool "64KB" | |
181 | ||
182 | endchoice | |
183 | ||
184 | endif | |
185 | ||
867e359b CM |
186 | source "kernel/Kconfig.hz" |
187 | ||
188 | config KEXEC | |
189 | bool "kexec system call" | |
190 | ---help--- | |
191 | kexec is a system call that implements the ability to shutdown your | |
192 | current kernel, and to start another kernel. It is like a reboot | |
193 | but it is independent of the system firmware. It is used | |
194 | to implement the "mboot" Tilera booter. | |
195 | ||
196 | The name comes from the similarity to the exec system call. | |
197 | ||
198 | config COMPAT | |
199 | bool "Support 32-bit TILE-Gx binaries in addition to 64-bit" | |
200 | depends on TILEGX | |
201 | select COMPAT_BINFMT_ELF | |
202 | default y | |
203 | ---help--- | |
204 | If enabled, the kernel will support running TILE-Gx binaries | |
205 | that were built with the -m32 option. | |
206 | ||
207 | config SYSVIPC_COMPAT | |
208 | def_bool y | |
209 | depends on COMPAT && SYSVIPC | |
210 | ||
211 | # We do not currently support disabling HIGHMEM on tile64 and tilepro. | |
212 | config HIGHMEM | |
213 | bool # "Support for more than 512 MB of RAM" | |
214 | default !TILEGX | |
215 | ---help--- | |
216 | Linux can use the full amount of RAM in the system by | |
217 | default. However, the address space of TILE processors is | |
218 | only 4 Gigabytes large. That means that, if you have a large | |
219 | amount of physical memory, not all of it can be "permanently | |
220 | mapped" by the kernel. The physical memory that's not | |
221 | permanently mapped is called "high memory". | |
222 | ||
223 | If you are compiling a kernel which will never run on a | |
224 | machine with more than 512 MB total physical RAM, answer | |
225 | "false" here. This will result in the kernel mapping all of | |
226 | physical memory into the top 1 GB of virtual memory space. | |
227 | ||
228 | If unsure, say "true". | |
229 | ||
eef015c8 CM |
230 | config ZONE_DMA |
231 | def_bool y | |
232 | ||
41bb38fc CM |
233 | config IOMMU_HELPER |
234 | bool | |
235 | ||
236 | config NEED_SG_DMA_LENGTH | |
237 | bool | |
238 | ||
239 | config SWIOTLB | |
240 | bool | |
241 | default TILEGX | |
242 | select IOMMU_HELPER | |
243 | select NEED_SG_DMA_LENGTH | |
244 | select ARCH_HAS_DMA_SET_COHERENT_MASK | |
245 | ||
867e359b CM |
246 | # We do not currently support disabling NUMA. |
247 | config NUMA | |
248 | bool # "NUMA Memory Allocation and Scheduler Support" | |
249 | depends on SMP && DISCONTIGMEM | |
250 | default y | |
251 | ---help--- | |
252 | NUMA memory allocation is required for TILE processors | |
253 | unless booting with memory striping enabled in the | |
254 | hypervisor, or with only a single memory controller. | |
255 | It is recommended that this option always be enabled. | |
256 | ||
257 | config NODES_SHIFT | |
258 | int "Log base 2 of the max number of memory controllers" | |
259 | default 2 | |
260 | depends on NEED_MULTIPLE_NODES | |
261 | ---help--- | |
262 | By default, 2, i.e. 2^2 == 4 DDR2 controllers. | |
263 | In a system with more controllers, this value should be raised. | |
264 | ||
867e359b CM |
265 | choice |
266 | depends on !TILEGX | |
6a108a14 | 267 | prompt "Memory split" if EXPERT |
867e359b CM |
268 | default VMSPLIT_3G |
269 | ---help--- | |
270 | Select the desired split between kernel and user memory. | |
271 | ||
272 | If the address range available to the kernel is less than the | |
273 | physical memory installed, the remaining memory will be available | |
274 | as "high memory". Accessing high memory is a little more costly | |
275 | than low memory, as it needs to be mapped into the kernel first. | |
276 | Note that increasing the kernel address space limits the range | |
277 | available to user programs, making the address space there | |
278 | tighter. Selecting anything other than the default 3G/1G split | |
279 | will also likely make your kernel incompatible with binary-only | |
280 | kernel modules. | |
281 | ||
282 | If you are not absolutely sure what you are doing, leave this | |
283 | option alone! | |
284 | ||
5592840b | 285 | config VMSPLIT_3_75G |
867e359b | 286 | bool "3.75G/0.25G user/kernel split (no kernel networking)" |
5592840b | 287 | config VMSPLIT_3_5G |
867e359b CM |
288 | bool "3.5G/0.5G user/kernel split" |
289 | config VMSPLIT_3G | |
290 | bool "3G/1G user/kernel split" | |
09c17eab CM |
291 | config VMSPLIT_2_75G |
292 | bool "2.75G/1.25G user/kernel split (for full 1G low memory)" | |
293 | config VMSPLIT_2_5G | |
294 | bool "2.5G/1.5G user/kernel split" | |
295 | config VMSPLIT_2_25G | |
296 | bool "2.25G/1.75G user/kernel split" | |
867e359b CM |
297 | config VMSPLIT_2G |
298 | bool "2G/2G user/kernel split" | |
299 | config VMSPLIT_1G | |
300 | bool "1G/3G user/kernel split" | |
301 | endchoice | |
302 | ||
303 | config PAGE_OFFSET | |
304 | hex | |
884197f7 | 305 | depends on !64BIT |
5592840b CM |
306 | default 0xF0000000 if VMSPLIT_3_75G |
307 | default 0xE0000000 if VMSPLIT_3_5G | |
09c17eab CM |
308 | default 0xB0000000 if VMSPLIT_2_75G |
309 | default 0xA0000000 if VMSPLIT_2_5G | |
310 | default 0x90000000 if VMSPLIT_2_25G | |
867e359b CM |
311 | default 0x80000000 if VMSPLIT_2G |
312 | default 0x40000000 if VMSPLIT_1G | |
313 | default 0xC0000000 | |
314 | ||
315 | source "mm/Kconfig" | |
316 | ||
317 | config CMDLINE_BOOL | |
318 | bool "Built-in kernel command line" | |
319 | default n | |
320 | ---help--- | |
321 | Allow for specifying boot arguments to the kernel at | |
322 | build time. On some systems (e.g. embedded ones), it is | |
323 | necessary or convenient to provide some or all of the | |
324 | kernel boot arguments with the kernel itself (that is, | |
325 | to not rely on the boot loader to provide them.) | |
326 | ||
327 | To compile command line arguments into the kernel, | |
328 | set this option to 'Y', then fill in the | |
329 | the boot arguments in CONFIG_CMDLINE. | |
330 | ||
331 | Systems with fully functional boot loaders (e.g. mboot, or | |
332 | if booting over PCI) should leave this option set to 'N'. | |
333 | ||
334 | config CMDLINE | |
335 | string "Built-in kernel command string" | |
336 | depends on CMDLINE_BOOL | |
337 | default "" | |
338 | ---help--- | |
339 | Enter arguments here that should be compiled into the kernel | |
340 | image and used at boot time. If the boot loader provides a | |
341 | command line at boot time, it is appended to this string to | |
342 | form the full kernel command line, when the system boots. | |
343 | ||
344 | However, you can use the CONFIG_CMDLINE_OVERRIDE option to | |
345 | change this behavior. | |
346 | ||
347 | In most cases, the command line (whether built-in or provided | |
348 | by the boot loader) should specify the device for the root | |
349 | file system. | |
350 | ||
351 | config CMDLINE_OVERRIDE | |
352 | bool "Built-in command line overrides boot loader arguments" | |
353 | default n | |
354 | depends on CMDLINE_BOOL | |
355 | ---help--- | |
356 | Set this option to 'Y' to have the kernel ignore the boot loader | |
357 | command line, and use ONLY the built-in command line. | |
358 | ||
359 | This is used to work around broken boot loaders. This should | |
360 | be set to 'N' under normal conditions. | |
361 | ||
362 | config VMALLOC_RESERVE | |
363 | hex | |
364 | default 0x1000000 | |
365 | ||
9f9c0382 CM |
366 | config HARDWALL |
367 | bool "Hardwall support to allow access to user dynamic network" | |
368 | default y | |
369 | ||
a78c942d CM |
370 | config KERNEL_PL |
371 | int "Processor protection level for kernel" | |
372 | range 1 2 | |
373 | default "1" | |
374 | ---help--- | |
375 | This setting determines the processor protection level the | |
376 | kernel will be built to run at. Generally you should use | |
377 | the default value here. | |
378 | ||
37b82b5d CM |
379 | source "arch/tile/gxio/Kconfig" |
380 | ||
867e359b CM |
381 | endmenu # Tilera-specific configuration |
382 | ||
383 | menu "Bus options" | |
384 | ||
f02cbbe6 CM |
385 | config PCI |
386 | bool "PCI support" | |
387 | default y | |
388 | select PCI_DOMAINS | |
84550121 | 389 | select GENERIC_PCI_IOMAP |
12962267 CM |
390 | select TILE_GXIO_TRIO if TILEGX |
391 | select ARCH_SUPPORTS_MSI if TILEGX | |
392 | select PCI_MSI if TILEGX | |
f02cbbe6 CM |
393 | ---help--- |
394 | Enable PCI root complex support, so PCIe endpoint devices can | |
395 | be attached to the Tile chip. Many, but not all, PCI devices | |
396 | are supported under Tilera's root complex driver. | |
397 | ||
398 | config PCI_DOMAINS | |
399 | bool | |
400 | ||
867e359b CM |
401 | config NO_IOMEM |
402 | def_bool !PCI | |
403 | ||
404 | config NO_IOPORT | |
405 | def_bool !PCI | |
406 | ||
407 | source "drivers/pci/Kconfig" | |
408 | ||
47fc28bf CM |
409 | config TILE_USB |
410 | tristate "Tilera USB host adapter support" | |
411 | default y | |
412 | depends on USB | |
413 | depends on TILEGX | |
414 | select TILE_GXIO_USB_HOST | |
415 | ---help--- | |
416 | Provides USB host adapter support for the built-in EHCI and OHCI | |
417 | interfaces on TILE-Gx chips. | |
418 | ||
867e359b CM |
419 | source "drivers/pci/hotplug/Kconfig" |
420 | ||
421 | endmenu | |
422 | ||
423 | menu "Executable file formats" | |
424 | ||
425 | # only elf supported | |
426 | config KCORE_ELF | |
427 | def_bool y | |
428 | depends on PROC_FS | |
429 | ||
430 | source "fs/Kconfig.binfmt" | |
431 | ||
432 | endmenu | |
433 | ||
434 | source "net/Kconfig" | |
435 | ||
436 | source "drivers/Kconfig" | |
437 | ||
438 | source "fs/Kconfig" | |
439 | ||
440 | source "arch/tile/Kconfig.debug" | |
441 | ||
442 | source "security/Kconfig" | |
443 | ||
444 | source "crypto/Kconfig" | |
445 | ||
446 | source "lib/Kconfig" | |
a78c942d CM |
447 | |
448 | source "arch/tile/kvm/Kconfig" |