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Chris Metcalf867e3592010-05-28 23:09:12 -04001# For a description of the syntax of this configuration file,
Chris Metcalf5fb682b2011-02-28 15:58:39 -05002# see Documentation/kbuild/kconfig-language.txt.
Chris Metcalf867e3592010-05-28 23:09:12 -04003
Thomas Gleixner8df274062011-01-19 20:44:43 +01004config TILE
5 def_bool y
Chris Metcalf41bb38f2012-06-15 15:23:06 -04006 select HAVE_DMA_ATTRS
7 select HAVE_DMA_API_DEBUG
Thomas Gleixner8df274062011-01-19 20:44:43 +01008 select HAVE_KVM if !TILEGX
9 select GENERIC_FIND_FIRST_BIT
Catalin Marinas7ac57a82012-10-08 16:28:16 -070010 select SYSCTL_EXCEPTION_TRACE
Thomas Gleixner8df274062011-01-19 20:44:43 +010011 select USE_GENERIC_SMP_HELPERS
12 select CC_OPTIMIZE_FOR_SIZE
Catalin Marinasb69ec422012-10-08 16:28:11 -070013 select HAVE_DEBUG_KMEMLEAK
Thomas Gleixner8df274062011-01-19 20:44:43 +010014 select HAVE_GENERIC_HARDIRQS
15 select GENERIC_IRQ_PROBE
16 select GENERIC_PENDING_IRQ if SMP
Thomas Gleixner61a16742011-03-25 14:21:17 +000017 select GENERIC_IRQ_SHOW
Catalin Marinas9b2a60c2012-10-08 16:28:13 -070018 select HAVE_DEBUG_BUGVERBOSE
Stephen Rothwell4febd952013-03-07 15:48:16 +110019 select VIRT_TO_BUS
Chris Metcalff133ecc2011-05-26 12:40:09 -040020 select SYS_HYPERVISOR
Stephen Boyd446f24d2013-04-30 15:28:42 -070021 select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
Chris Metcalf8d695142012-03-27 13:47:57 -040022 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Anna-Maria Gleixner4ec008d2012-05-18 16:45:54 +000023 select GENERIC_CLOCKEVENTS
David Howells786d35d2012-09-28 14:31:03 +093024 select MODULES_USE_ELF_RELA
Simon Marchi969f6fe2012-12-22 00:21:12 -050025 select HAVE_ARCH_TRACEHOOK
Simon Marchief567f22013-01-21 19:54:57 -050026 select HAVE_SYSCALL_TRACEPOINTS
Chris Metcalfadf6d9b2013-02-01 12:37:48 -050027 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Dave Hansend1a1dc02013-07-01 13:04:42 -070028 select HAVE_DEBUG_STACKOVERFLOW
Chris Metcalf49cf78e2013-08-12 15:00:51 -040029 select ARCH_WANT_FRAME_POINTERS
Thomas Gleixner8df274062011-01-19 20:44:43 +010030
31# FIXME: investigate whether we need/want these options.
32# select HAVE_IOREMAP_PROT
Chris Metcalf5fb682b2011-02-28 15:58:39 -050033# 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
Thomas Gleixner8df274062011-01-19 20:44:43 +010041
Chris Metcalf867e3592010-05-28 23:09:12 -040042config MMU
43 def_bool y
44
45config GENERIC_CSUM
46 def_bool y
47
Chris Metcalf867e3592010-05-28 23:09:12 -040048config HAVE_ARCH_ALLOC_REMAP
49 def_bool y
50
51config HAVE_SETUP_PER_CPU_AREA
52 def_bool y
53
54config NEED_PER_CPU_PAGE_FIRST_CHUNK
Chris Metcalf5fb682b2011-02-28 15:58:39 -050055 def_bool y
Chris Metcalf867e3592010-05-28 23:09:12 -040056
57config SYS_SUPPORTS_HUGETLBFS
58 def_bool y
59
Chris Metcalf621b1952012-04-01 14:04:21 -040060# 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.
64config HUGETLB_SUPER_PAGES
65 depends on HUGETLB_PAGE && TILEGX
66 def_bool y
67
Chris Metcalf4a556f42013-08-07 15:33:32 -040068config GENERIC_TIME_VSYSCALL
69 def_bool y
70
Lucas De Marchi25985ed2011-03-30 22:57:33 -030071# FIXME: tilegx can implement a more efficient rwsem.
Chris Metcalf867e3592010-05-28 23:09:12 -040072config RWSEM_GENERIC_SPINLOCK
73 def_bool y
74
Chris Metcalf867e3592010-05-28 23:09:12 -040075# We only support gcc 4.4 and above, so this should work.
76config ARCH_SUPPORTS_OPTIMIZED_INLINING
77 def_bool y
78
79config ARCH_PHYS_ADDR_T_64BIT
80 def_bool y
81
FUJITA Tomonorid31eb512010-10-27 15:32:58 -070082config ARCH_DMA_ADDR_T_64BIT
83 def_bool y
84
Chris Metcalf3d1e8a82012-03-27 13:53:30 -040085config NEED_DMA_MAP_STATE
86 def_bool y
87
Chris Metcalf41bb38f2012-06-15 15:23:06 -040088config ARCH_HAS_DMA_SET_COHERENT_MASK
89 bool
90
Chris Metcalf867e3592010-05-28 23:09:12 -040091config LOCKDEP_SUPPORT
92 def_bool y
93
94config STACKTRACE_SUPPORT
95 def_bool y
96 select STACKTRACE
97
98# We use discontigmem for now; at some point we may want to switch
99# to sparsemem (Tilera bug 7996).
100config ARCH_DISCONTIGMEM_ENABLE
101 def_bool y
102
103config ARCH_DISCONTIGMEM_DEFAULT
104 def_bool y
105
106config TRACE_IRQFLAGS_SUPPORT
107 def_bool y
108
109config STRICT_DEVMEM
110 def_bool y
111
112# SMP is required for Tilera Linux.
113config SMP
114 def_bool y
115
Chris Metcalf867e3592010-05-28 23:09:12 -0400116config HVC_TILE
Joe Millenbach4f73bc42013-01-17 22:44:22 -0800117 depends on TTY
Chris Metcalf867e3592010-05-28 23:09:12 -0400118 select HVC_DRIVER
Chris Metcalfbda0f5b2013-08-06 14:11:21 -0400119 select HVC_IRQ if TILEGX
Chris Metcalf867e3592010-05-28 23:09:12 -0400120 def_bool y
121
Chris Metcalf867e3592010-05-28 23:09:12 -0400122config TILEGX
Tony Lua61fd5e2013-08-09 13:26:09 -0400123 bool "Building for TILE-Gx (64-bit) processor"
124 select HAVE_FUNCTION_TRACER
125 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
126 select HAVE_FUNCTION_GRAPH_TRACER
127 select HAVE_DYNAMIC_FTRACE
128 select HAVE_FTRACE_MCOUNT_RECORD
Tony Lu3fa17c32013-08-09 15:08:57 -0400129 select HAVE_KPROBES
130 select HAVE_KRETPROBES
Chris Metcalf81571072013-08-28 19:53:17 -0400131 select HAVE_ARCH_KGDB
Chris Metcalf867e3592010-05-28 23:09:12 -0400132
Chris Metcalfacd1a192012-04-07 15:58:24 -0400133config TILEPRO
134 def_bool !TILEGX
135
Chris Metcalf867e3592010-05-28 23:09:12 -0400136config 64BIT
Chris Metcalfacd1a192012-04-07 15:58:24 -0400137 def_bool TILEGX
Chris Metcalf867e3592010-05-28 23:09:12 -0400138
139config ARCH_DEFCONFIG
140 string
Chris Metcalf3d1e8a82012-03-27 13:53:30 -0400141 default "arch/tile/configs/tilepro_defconfig" if !TILEGX
Chris Metcalf867e3592010-05-28 23:09:12 -0400142 default "arch/tile/configs/tilegx_defconfig" if TILEGX
143
144source "init/Kconfig"
145
Chris Metcalf99a844b2013-01-31 21:21:36 -0500146source "kernel/Kconfig.freezer"
147
Chris Metcalf867e3592010-05-28 23:09:12 -0400148menu "Tilera-specific configuration"
149
150config NR_CPUS
151 int "Maximum number of tiles (2-255)"
152 range 2 255
153 depends on SMP
154 default "64"
155 ---help---
156 Building with 64 is the recommended value, but a slightly
157 smaller kernel memory footprint results from using a smaller
158 value on chips with fewer tiles.
159
Chris Metcalfd5d14ed2012-03-29 13:58:43 -0400160if TILEGX
161
162choice
163 prompt "Kernel page size"
164 default PAGE_SIZE_64KB
165 help
166 This lets you select the page size of the kernel. For best
167 performance on memory-intensive applications, a page size of 64KB
168 is recommended. For workloads involving many small files, many
169 connections, etc., it may be better to select 16KB, which uses
170 memory more efficiently at some cost in TLB performance.
171
172 Note that this option is TILE-Gx specific; currently
173 TILEPro page size is set by rebuilding the hypervisor.
174
175config PAGE_SIZE_16KB
176 bool "16KB"
177
178config PAGE_SIZE_64KB
179 bool "64KB"
180
181endchoice
182
183endif
184
Chris Metcalf867e3592010-05-28 23:09:12 -0400185source "kernel/Kconfig.hz"
186
187config KEXEC
188 bool "kexec system call"
189 ---help---
190 kexec is a system call that implements the ability to shutdown your
191 current kernel, and to start another kernel. It is like a reboot
192 but it is independent of the system firmware. It is used
193 to implement the "mboot" Tilera booter.
194
195 The name comes from the similarity to the exec system call.
196
197config COMPAT
198 bool "Support 32-bit TILE-Gx binaries in addition to 64-bit"
199 depends on TILEGX
200 select COMPAT_BINFMT_ELF
201 default y
202 ---help---
203 If enabled, the kernel will support running TILE-Gx binaries
204 that were built with the -m32 option.
205
206config SYSVIPC_COMPAT
207 def_bool y
208 depends on COMPAT && SYSVIPC
209
210# We do not currently support disabling HIGHMEM on tile64 and tilepro.
211config HIGHMEM
212 bool # "Support for more than 512 MB of RAM"
213 default !TILEGX
214 ---help---
215 Linux can use the full amount of RAM in the system by
216 default. However, the address space of TILE processors is
217 only 4 Gigabytes large. That means that, if you have a large
218 amount of physical memory, not all of it can be "permanently
219 mapped" by the kernel. The physical memory that's not
220 permanently mapped is called "high memory".
221
222 If you are compiling a kernel which will never run on a
223 machine with more than 512 MB total physical RAM, answer
224 "false" here. This will result in the kernel mapping all of
225 physical memory into the top 1 GB of virtual memory space.
226
227 If unsure, say "true".
228
Chris Metcalfeef015c2012-05-09 12:26:30 -0400229config ZONE_DMA
230 def_bool y
231
Chris Metcalf41bb38f2012-06-15 15:23:06 -0400232config IOMMU_HELPER
233 bool
234
235config NEED_SG_DMA_LENGTH
236 bool
237
238config SWIOTLB
239 bool
240 default TILEGX
241 select IOMMU_HELPER
242 select NEED_SG_DMA_LENGTH
243 select ARCH_HAS_DMA_SET_COHERENT_MASK
244
Chris Metcalf867e3592010-05-28 23:09:12 -0400245# We do not currently support disabling NUMA.
246config NUMA
247 bool # "NUMA Memory Allocation and Scheduler Support"
248 depends on SMP && DISCONTIGMEM
249 default y
250 ---help---
251 NUMA memory allocation is required for TILE processors
252 unless booting with memory striping enabled in the
253 hypervisor, or with only a single memory controller.
254 It is recommended that this option always be enabled.
255
256config NODES_SHIFT
257 int "Log base 2 of the max number of memory controllers"
258 default 2
259 depends on NEED_MULTIPLE_NODES
260 ---help---
261 By default, 2, i.e. 2^2 == 4 DDR2 controllers.
262 In a system with more controllers, this value should be raised.
263
Chris Metcalf867e3592010-05-28 23:09:12 -0400264choice
265 depends on !TILEGX
David Rientjes6a108a12011-01-20 14:44:16 -0800266 prompt "Memory split" if EXPERT
Chris Metcalf867e3592010-05-28 23:09:12 -0400267 default VMSPLIT_3G
268 ---help---
269 Select the desired split between kernel and user memory.
270
271 If the address range available to the kernel is less than the
272 physical memory installed, the remaining memory will be available
273 as "high memory". Accessing high memory is a little more costly
274 than low memory, as it needs to be mapped into the kernel first.
275 Note that increasing the kernel address space limits the range
276 available to user programs, making the address space there
277 tighter. Selecting anything other than the default 3G/1G split
278 will also likely make your kernel incompatible with binary-only
279 kernel modules.
280
281 If you are not absolutely sure what you are doing, leave this
282 option alone!
283
Chris Metcalf55928402010-09-13 08:50:09 -0400284 config VMSPLIT_3_75G
Chris Metcalf867e3592010-05-28 23:09:12 -0400285 bool "3.75G/0.25G user/kernel split (no kernel networking)"
Chris Metcalf55928402010-09-13 08:50:09 -0400286 config VMSPLIT_3_5G
Chris Metcalf867e3592010-05-28 23:09:12 -0400287 bool "3.5G/0.5G user/kernel split"
288 config VMSPLIT_3G
289 bool "3G/1G user/kernel split"
Chris Metcalf09c17ea2011-02-28 16:01:09 -0500290 config VMSPLIT_2_75G
291 bool "2.75G/1.25G user/kernel split (for full 1G low memory)"
292 config VMSPLIT_2_5G
293 bool "2.5G/1.5G user/kernel split"
294 config VMSPLIT_2_25G
295 bool "2.25G/1.75G user/kernel split"
Chris Metcalf867e3592010-05-28 23:09:12 -0400296 config VMSPLIT_2G
297 bool "2G/2G user/kernel split"
298 config VMSPLIT_1G
299 bool "1G/3G user/kernel split"
300endchoice
301
302config PAGE_OFFSET
303 hex
Chris Metcalf884197f2012-03-27 13:56:04 -0400304 depends on !64BIT
Chris Metcalf55928402010-09-13 08:50:09 -0400305 default 0xF0000000 if VMSPLIT_3_75G
306 default 0xE0000000 if VMSPLIT_3_5G
Chris Metcalf09c17ea2011-02-28 16:01:09 -0500307 default 0xB0000000 if VMSPLIT_2_75G
308 default 0xA0000000 if VMSPLIT_2_5G
309 default 0x90000000 if VMSPLIT_2_25G
Chris Metcalf867e3592010-05-28 23:09:12 -0400310 default 0x80000000 if VMSPLIT_2G
311 default 0x40000000 if VMSPLIT_1G
312 default 0xC0000000
313
314source "mm/Kconfig"
315
Chris Metcalfbc1a2982013-08-07 11:36:54 -0400316source "kernel/Kconfig.preempt"
317
Chris Metcalf867e3592010-05-28 23:09:12 -0400318config CMDLINE_BOOL
319 bool "Built-in kernel command line"
320 default n
321 ---help---
322 Allow for specifying boot arguments to the kernel at
323 build time. On some systems (e.g. embedded ones), it is
324 necessary or convenient to provide some or all of the
325 kernel boot arguments with the kernel itself (that is,
326 to not rely on the boot loader to provide them.)
327
328 To compile command line arguments into the kernel,
329 set this option to 'Y', then fill in the
330 the boot arguments in CONFIG_CMDLINE.
331
332 Systems with fully functional boot loaders (e.g. mboot, or
333 if booting over PCI) should leave this option set to 'N'.
334
335config CMDLINE
336 string "Built-in kernel command string"
337 depends on CMDLINE_BOOL
338 default ""
339 ---help---
340 Enter arguments here that should be compiled into the kernel
341 image and used at boot time. If the boot loader provides a
342 command line at boot time, it is appended to this string to
343 form the full kernel command line, when the system boots.
344
345 However, you can use the CONFIG_CMDLINE_OVERRIDE option to
346 change this behavior.
347
348 In most cases, the command line (whether built-in or provided
349 by the boot loader) should specify the device for the root
350 file system.
351
352config CMDLINE_OVERRIDE
353 bool "Built-in command line overrides boot loader arguments"
354 default n
355 depends on CMDLINE_BOOL
356 ---help---
357 Set this option to 'Y' to have the kernel ignore the boot loader
358 command line, and use ONLY the built-in command line.
359
360 This is used to work around broken boot loaders. This should
361 be set to 'N' under normal conditions.
362
363config VMALLOC_RESERVE
364 hex
365 default 0x1000000
366
Chris Metcalf9f9c0382010-06-25 17:00:56 -0400367config HARDWALL
368 bool "Hardwall support to allow access to user dynamic network"
369 default y
370
Chris Metcalfa78c9422010-10-14 16:23:03 -0400371config KERNEL_PL
372 int "Processor protection level for kernel"
373 range 1 2
Chris Metcalfc5399142013-05-02 15:29:04 -0400374 default 2 if TILEGX
375 default 1 if !TILEGX
Chris Metcalfa78c9422010-10-14 16:23:03 -0400376 ---help---
Chris Metcalfc5399142013-05-02 15:29:04 -0400377 Since MDE 4.2, the Tilera hypervisor runs the kernel
378 at PL2 by default. If running under an older hypervisor,
379 or as a KVM guest, you must run at PL1. (The current
380 hypervisor may also be recompiled with "make HV_PL=2" to
381 allow it to run a kernel at PL1, but clients running at PL1
382 are not expected to be supported indefinitely.)
383
384 If you're not sure, don't change the default.
Chris Metcalfa78c9422010-10-14 16:23:03 -0400385
Chris Metcalf37b82b52012-04-04 16:39:58 -0400386source "arch/tile/gxio/Kconfig"
387
Chris Metcalf867e3592010-05-28 23:09:12 -0400388endmenu # Tilera-specific configuration
389
390menu "Bus options"
391
Chris Metcalff02cbbe2010-11-02 12:05:10 -0400392config PCI
393 bool "PCI support"
394 default y
395 select PCI_DOMAINS
Michael S. Tsirkin84550122011-11-29 20:42:56 +0200396 select GENERIC_PCI_IOMAP
Chris Metcalf12962262012-04-07 17:10:17 -0400397 select TILE_GXIO_TRIO if TILEGX
398 select ARCH_SUPPORTS_MSI if TILEGX
399 select PCI_MSI if TILEGX
Chris Metcalff02cbbe2010-11-02 12:05:10 -0400400 ---help---
401 Enable PCI root complex support, so PCIe endpoint devices can
402 be attached to the Tile chip. Many, but not all, PCI devices
403 are supported under Tilera's root complex driver.
404
405config PCI_DOMAINS
406 bool
407
Chris Metcalf867e3592010-05-28 23:09:12 -0400408config NO_IOMEM
409 def_bool !PCI
410
411config NO_IOPORT
412 def_bool !PCI
413
Chris Metcalfcf89c422013-08-02 16:45:22 -0400414config TILE_PCI_IO
415 bool "PCI I/O space support"
416 default n
417 depends on PCI
418 depends on TILEGX
419 ---help---
420 Enable PCI I/O space support on TILEGx. Since the PCI I/O space
421 is used by few modern PCIe endpoint devices, its support is disabled
422 by default to save the TRIO PIO Region resource for other purposes.
423
Chris Metcalf867e3592010-05-28 23:09:12 -0400424source "drivers/pci/Kconfig"
425
Chris Metcalff62f73f2013-08-05 13:20:44 -0400426source "drivers/pci/pcie/Kconfig"
427
Chris Metcalf47fc28b2012-05-09 13:58:14 -0400428config TILE_USB
429 tristate "Tilera USB host adapter support"
430 default y
431 depends on USB
432 depends on TILEGX
433 select TILE_GXIO_USB_HOST
434 ---help---
435 Provides USB host adapter support for the built-in EHCI and OHCI
436 interfaces on TILE-Gx chips.
437
Chris Metcalf867e3592010-05-28 23:09:12 -0400438source "drivers/pci/hotplug/Kconfig"
439
440endmenu
441
442menu "Executable file formats"
443
Chris Metcalf867e3592010-05-28 23:09:12 -0400444source "fs/Kconfig.binfmt"
445
446endmenu
447
448source "net/Kconfig"
449
450source "drivers/Kconfig"
451
452source "fs/Kconfig"
453
454source "arch/tile/Kconfig.debug"
455
456source "security/Kconfig"
457
458source "crypto/Kconfig"
459
460source "lib/Kconfig"
Chris Metcalfa78c9422010-10-14 16:23:03 -0400461
462source "arch/tile/kvm/Kconfig"