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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
Zhigang Lu8d61dd72014-01-28 10:03:50 +08006 select HAVE_PERF_EVENTS
7 select USE_PMC if PERF_EVENTS
Chris Metcalf41bb38f2012-06-15 15:23:06 -04008 select HAVE_DMA_ATTRS
9 select HAVE_DMA_API_DEBUG
Thomas Gleixner8df274062011-01-19 20:44:43 +010010 select HAVE_KVM if !TILEGX
11 select GENERIC_FIND_FIRST_BIT
Catalin Marinas7ac57a82012-10-08 16:28:16 -070012 select SYSCTL_EXCEPTION_TRACE
Thomas Gleixner8df274062011-01-19 20:44:43 +010013 select CC_OPTIMIZE_FOR_SIZE
Catalin Marinasb69ec422012-10-08 16:28:11 -070014 select HAVE_DEBUG_KMEMLEAK
Thomas Gleixner8df274062011-01-19 20:44:43 +010015 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
Zhigang Lu8e3441e2014-01-27 15:11:07 +080071# Enable PMC if PERF_EVENTS, OPROFILE, or WATCHPOINTS are enabled.
72config USE_PMC
73 bool
74
Lucas De Marchi25985ed2011-03-30 22:57:33 -030075# FIXME: tilegx can implement a more efficient rwsem.
Chris Metcalf867e3592010-05-28 23:09:12 -040076config RWSEM_GENERIC_SPINLOCK
77 def_bool y
78
Chris Metcalf867e3592010-05-28 23:09:12 -040079# We only support gcc 4.4 and above, so this should work.
80config ARCH_SUPPORTS_OPTIMIZED_INLINING
81 def_bool y
82
83config ARCH_PHYS_ADDR_T_64BIT
84 def_bool y
85
FUJITA Tomonorid31eb512010-10-27 15:32:58 -070086config ARCH_DMA_ADDR_T_64BIT
87 def_bool y
88
Chris Metcalf3d1e8a82012-03-27 13:53:30 -040089config NEED_DMA_MAP_STATE
90 def_bool y
91
Chris Metcalf41bb38f2012-06-15 15:23:06 -040092config ARCH_HAS_DMA_SET_COHERENT_MASK
93 bool
94
Chris Metcalf867e3592010-05-28 23:09:12 -040095config LOCKDEP_SUPPORT
96 def_bool y
97
98config 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).
104config ARCH_DISCONTIGMEM_ENABLE
105 def_bool y
106
107config ARCH_DISCONTIGMEM_DEFAULT
108 def_bool y
109
110config TRACE_IRQFLAGS_SUPPORT
111 def_bool y
112
113config STRICT_DEVMEM
114 def_bool y
115
116# SMP is required for Tilera Linux.
117config SMP
118 def_bool y
119
Chris Metcalf867e3592010-05-28 23:09:12 -0400120config HVC_TILE
Joe Millenbach4f73bc42013-01-17 22:44:22 -0800121 depends on TTY
Chris Metcalf867e3592010-05-28 23:09:12 -0400122 select HVC_DRIVER
Chris Metcalfbda0f5b2013-08-06 14:11:21 -0400123 select HVC_IRQ if TILEGX
Chris Metcalf867e3592010-05-28 23:09:12 -0400124 def_bool y
125
Chris Metcalf867e3592010-05-28 23:09:12 -0400126config TILEGX
Tony Lua61fd5e2013-08-09 13:26:09 -0400127 bool "Building for TILE-Gx (64-bit) processor"
Thomas Gleixnerb26d8512014-05-07 15:44:16 +0000128 select SPARSE_IRQ
129 select GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
Tony Lua61fd5e2013-08-09 13:26:09 -0400130 select HAVE_FUNCTION_TRACER
Tony Lua61fd5e2013-08-09 13:26:09 -0400131 select HAVE_FUNCTION_GRAPH_TRACER
132 select HAVE_DYNAMIC_FTRACE
133 select HAVE_FTRACE_MCOUNT_RECORD
Tony Lu3fa17c32013-08-09 15:08:57 -0400134 select HAVE_KPROBES
135 select HAVE_KRETPROBES
Chris Metcalf81571072013-08-28 19:53:17 -0400136 select HAVE_ARCH_KGDB
Chris Metcalf867e3592010-05-28 23:09:12 -0400137
Chris Metcalfacd1a192012-04-07 15:58:24 -0400138config TILEPRO
139 def_bool !TILEGX
140
Chris Metcalf867e3592010-05-28 23:09:12 -0400141config 64BIT
Chris Metcalfacd1a192012-04-07 15:58:24 -0400142 def_bool TILEGX
Chris Metcalf867e3592010-05-28 23:09:12 -0400143
144config ARCH_DEFCONFIG
145 string
Chris Metcalf3d1e8a82012-03-27 13:53:30 -0400146 default "arch/tile/configs/tilepro_defconfig" if !TILEGX
Chris Metcalf867e3592010-05-28 23:09:12 -0400147 default "arch/tile/configs/tilegx_defconfig" if TILEGX
148
149source "init/Kconfig"
150
Chris Metcalf99a844b2013-01-31 21:21:36 -0500151source "kernel/Kconfig.freezer"
152
Chris Metcalf867e3592010-05-28 23:09:12 -0400153menu "Tilera-specific configuration"
154
155config NR_CPUS
156 int "Maximum number of tiles (2-255)"
157 range 2 255
158 depends on SMP
159 default "64"
160 ---help---
161 Building with 64 is the recommended value, but a slightly
162 smaller kernel memory footprint results from using a smaller
163 value on chips with fewer tiles.
164
Chris Metcalfd5d14ed2012-03-29 13:58:43 -0400165if TILEGX
166
167choice
168 prompt "Kernel page size"
169 default PAGE_SIZE_64KB
170 help
171 This lets you select the page size of the kernel. For best
172 performance on memory-intensive applications, a page size of 64KB
173 is recommended. For workloads involving many small files, many
174 connections, etc., it may be better to select 16KB, which uses
175 memory more efficiently at some cost in TLB performance.
176
177 Note that this option is TILE-Gx specific; currently
178 TILEPro page size is set by rebuilding the hypervisor.
179
180config PAGE_SIZE_16KB
181 bool "16KB"
182
183config PAGE_SIZE_64KB
184 bool "64KB"
185
186endchoice
187
188endif
189
Chris Metcalf867e3592010-05-28 23:09:12 -0400190source "kernel/Kconfig.hz"
191
192config KEXEC
193 bool "kexec system call"
194 ---help---
195 kexec is a system call that implements the ability to shutdown your
196 current kernel, and to start another kernel. It is like a reboot
197 but it is independent of the system firmware. It is used
198 to implement the "mboot" Tilera booter.
199
200 The name comes from the similarity to the exec system call.
201
202config COMPAT
203 bool "Support 32-bit TILE-Gx binaries in addition to 64-bit"
204 depends on TILEGX
205 select COMPAT_BINFMT_ELF
206 default y
207 ---help---
208 If enabled, the kernel will support running TILE-Gx binaries
209 that were built with the -m32 option.
210
211config SYSVIPC_COMPAT
212 def_bool y
213 depends on COMPAT && SYSVIPC
214
Chris Metcalfd7c96612013-08-15 16:23:24 -0400215# We do not currently support disabling HIGHMEM on tilepro.
Chris Metcalf867e3592010-05-28 23:09:12 -0400216config HIGHMEM
217 bool # "Support for more than 512 MB of RAM"
218 default !TILEGX
219 ---help---
220 Linux can use the full amount of RAM in the system by
221 default. However, the address space of TILE processors is
222 only 4 Gigabytes large. That means that, if you have a large
223 amount of physical memory, not all of it can be "permanently
224 mapped" by the kernel. The physical memory that's not
225 permanently mapped is called "high memory".
226
227 If you are compiling a kernel which will never run on a
228 machine with more than 512 MB total physical RAM, answer
229 "false" here. This will result in the kernel mapping all of
230 physical memory into the top 1 GB of virtual memory space.
231
232 If unsure, say "true".
233
Chris Metcalfeef015c2012-05-09 12:26:30 -0400234config ZONE_DMA
235 def_bool y
236
Chris Metcalf41bb38f2012-06-15 15:23:06 -0400237config IOMMU_HELPER
238 bool
239
240config NEED_SG_DMA_LENGTH
241 bool
242
243config SWIOTLB
244 bool
245 default TILEGX
246 select IOMMU_HELPER
247 select NEED_SG_DMA_LENGTH
248 select ARCH_HAS_DMA_SET_COHERENT_MASK
249
Chris Metcalf867e3592010-05-28 23:09:12 -0400250# We do not currently support disabling NUMA.
251config NUMA
252 bool # "NUMA Memory Allocation and Scheduler Support"
253 depends on SMP && DISCONTIGMEM
254 default y
255 ---help---
256 NUMA memory allocation is required for TILE processors
257 unless booting with memory striping enabled in the
258 hypervisor, or with only a single memory controller.
259 It is recommended that this option always be enabled.
260
261config NODES_SHIFT
262 int "Log base 2 of the max number of memory controllers"
263 default 2
264 depends on NEED_MULTIPLE_NODES
265 ---help---
266 By default, 2, i.e. 2^2 == 4 DDR2 controllers.
267 In a system with more controllers, this value should be raised.
268
Chris Metcalf867e3592010-05-28 23:09:12 -0400269choice
270 depends on !TILEGX
David Rientjes6a108a12011-01-20 14:44:16 -0800271 prompt "Memory split" if EXPERT
Chris Metcalf867e3592010-05-28 23:09:12 -0400272 default VMSPLIT_3G
273 ---help---
274 Select the desired split between kernel and user memory.
275
276 If the address range available to the kernel is less than the
277 physical memory installed, the remaining memory will be available
278 as "high memory". Accessing high memory is a little more costly
279 than low memory, as it needs to be mapped into the kernel first.
280 Note that increasing the kernel address space limits the range
281 available to user programs, making the address space there
282 tighter. Selecting anything other than the default 3G/1G split
283 will also likely make your kernel incompatible with binary-only
284 kernel modules.
285
286 If you are not absolutely sure what you are doing, leave this
287 option alone!
288
Chris Metcalf55928402010-09-13 08:50:09 -0400289 config VMSPLIT_3_75G
Chris Metcalf867e3592010-05-28 23:09:12 -0400290 bool "3.75G/0.25G user/kernel split (no kernel networking)"
Chris Metcalf55928402010-09-13 08:50:09 -0400291 config VMSPLIT_3_5G
Chris Metcalf867e3592010-05-28 23:09:12 -0400292 bool "3.5G/0.5G user/kernel split"
293 config VMSPLIT_3G
294 bool "3G/1G user/kernel split"
Chris Metcalf09c17ea2011-02-28 16:01:09 -0500295 config VMSPLIT_2_75G
296 bool "2.75G/1.25G user/kernel split (for full 1G low memory)"
297 config VMSPLIT_2_5G
298 bool "2.5G/1.5G user/kernel split"
299 config VMSPLIT_2_25G
300 bool "2.25G/1.75G user/kernel split"
Chris Metcalf867e3592010-05-28 23:09:12 -0400301 config VMSPLIT_2G
302 bool "2G/2G user/kernel split"
303 config VMSPLIT_1G
304 bool "1G/3G user/kernel split"
305endchoice
306
307config PAGE_OFFSET
308 hex
Chris Metcalf884197f2012-03-27 13:56:04 -0400309 depends on !64BIT
Chris Metcalf55928402010-09-13 08:50:09 -0400310 default 0xF0000000 if VMSPLIT_3_75G
311 default 0xE0000000 if VMSPLIT_3_5G
Chris Metcalf09c17ea2011-02-28 16:01:09 -0500312 default 0xB0000000 if VMSPLIT_2_75G
313 default 0xA0000000 if VMSPLIT_2_5G
314 default 0x90000000 if VMSPLIT_2_25G
Chris Metcalf867e3592010-05-28 23:09:12 -0400315 default 0x80000000 if VMSPLIT_2G
316 default 0x40000000 if VMSPLIT_1G
317 default 0xC0000000
318
319source "mm/Kconfig"
320
Chris Metcalfbc1a2982013-08-07 11:36:54 -0400321source "kernel/Kconfig.preempt"
322
Chris Metcalf867e3592010-05-28 23:09:12 -0400323config CMDLINE_BOOL
324 bool "Built-in kernel command line"
325 default n
326 ---help---
327 Allow for specifying boot arguments to the kernel at
328 build time. On some systems (e.g. embedded ones), it is
329 necessary or convenient to provide some or all of the
330 kernel boot arguments with the kernel itself (that is,
331 to not rely on the boot loader to provide them.)
332
333 To compile command line arguments into the kernel,
334 set this option to 'Y', then fill in the
335 the boot arguments in CONFIG_CMDLINE.
336
337 Systems with fully functional boot loaders (e.g. mboot, or
338 if booting over PCI) should leave this option set to 'N'.
339
340config CMDLINE
341 string "Built-in kernel command string"
342 depends on CMDLINE_BOOL
343 default ""
344 ---help---
345 Enter arguments here that should be compiled into the kernel
346 image and used at boot time. If the boot loader provides a
347 command line at boot time, it is appended to this string to
348 form the full kernel command line, when the system boots.
349
350 However, you can use the CONFIG_CMDLINE_OVERRIDE option to
351 change this behavior.
352
353 In most cases, the command line (whether built-in or provided
354 by the boot loader) should specify the device for the root
355 file system.
356
357config CMDLINE_OVERRIDE
358 bool "Built-in command line overrides boot loader arguments"
359 default n
360 depends on CMDLINE_BOOL
361 ---help---
362 Set this option to 'Y' to have the kernel ignore the boot loader
363 command line, and use ONLY the built-in command line.
364
365 This is used to work around broken boot loaders. This should
366 be set to 'N' under normal conditions.
367
368config VMALLOC_RESERVE
369 hex
Chris Metcalfad2a4bb2013-09-16 13:02:57 -0400370 default 0x2000000
Chris Metcalf867e3592010-05-28 23:09:12 -0400371
Chris Metcalf9f9c0382010-06-25 17:00:56 -0400372config HARDWALL
373 bool "Hardwall support to allow access to user dynamic network"
374 default y
375
Chris Metcalfa78c9422010-10-14 16:23:03 -0400376config KERNEL_PL
377 int "Processor protection level for kernel"
378 range 1 2
Chris Metcalfc5399142013-05-02 15:29:04 -0400379 default 2 if TILEGX
380 default 1 if !TILEGX
Chris Metcalfa78c9422010-10-14 16:23:03 -0400381 ---help---
Chris Metcalfc5399142013-05-02 15:29:04 -0400382 Since MDE 4.2, the Tilera hypervisor runs the kernel
383 at PL2 by default. If running under an older hypervisor,
384 or as a KVM guest, you must run at PL1. (The current
385 hypervisor may also be recompiled with "make HV_PL=2" to
386 allow it to run a kernel at PL1, but clients running at PL1
387 are not expected to be supported indefinitely.)
388
389 If you're not sure, don't change the default.
Chris Metcalfa78c9422010-10-14 16:23:03 -0400390
Chris Metcalf37b82b52012-04-04 16:39:58 -0400391source "arch/tile/gxio/Kconfig"
392
Chris Metcalf867e3592010-05-28 23:09:12 -0400393endmenu # Tilera-specific configuration
394
395menu "Bus options"
396
Chris Metcalff02cbbe2010-11-02 12:05:10 -0400397config PCI
398 bool "PCI support"
399 default y
400 select PCI_DOMAINS
Michael S. Tsirkin84550122011-11-29 20:42:56 +0200401 select GENERIC_PCI_IOMAP
Chris Metcalf12962262012-04-07 17:10:17 -0400402 select TILE_GXIO_TRIO if TILEGX
Chris Metcalf12962262012-04-07 17:10:17 -0400403 select PCI_MSI if TILEGX
Chris Metcalff02cbbe2010-11-02 12:05:10 -0400404 ---help---
405 Enable PCI root complex support, so PCIe endpoint devices can
406 be attached to the Tile chip. Many, but not all, PCI devices
407 are supported under Tilera's root complex driver.
408
409config PCI_DOMAINS
410 bool
411
Chris Metcalf867e3592010-05-28 23:09:12 -0400412config NO_IOMEM
413 def_bool !PCI
414
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700415config NO_IOPORT_MAP
Chris Metcalf867e3592010-05-28 23:09:12 -0400416 def_bool !PCI
417
Chris Metcalfcf89c422013-08-02 16:45:22 -0400418config TILE_PCI_IO
419 bool "PCI I/O space support"
420 default n
421 depends on PCI
422 depends on TILEGX
423 ---help---
424 Enable PCI I/O space support on TILEGx. Since the PCI I/O space
425 is used by few modern PCIe endpoint devices, its support is disabled
426 by default to save the TRIO PIO Region resource for other purposes.
427
Chris Metcalf867e3592010-05-28 23:09:12 -0400428source "drivers/pci/Kconfig"
429
Chris Metcalff62f73f2013-08-05 13:20:44 -0400430source "drivers/pci/pcie/Kconfig"
431
Chris Metcalf47fc28b2012-05-09 13:58:14 -0400432config TILE_USB
433 tristate "Tilera USB host adapter support"
434 default y
435 depends on USB
436 depends on TILEGX
437 select TILE_GXIO_USB_HOST
438 ---help---
439 Provides USB host adapter support for the built-in EHCI and OHCI
440 interfaces on TILE-Gx chips.
441
Chris Metcalf867e3592010-05-28 23:09:12 -0400442source "drivers/pci/hotplug/Kconfig"
443
444endmenu
445
446menu "Executable file formats"
447
Chris Metcalf867e3592010-05-28 23:09:12 -0400448source "fs/Kconfig.binfmt"
449
450endmenu
451
452source "net/Kconfig"
453
454source "drivers/Kconfig"
455
456source "fs/Kconfig"
457
458source "arch/tile/Kconfig.debug"
459
460source "security/Kconfig"
461
462source "crypto/Kconfig"
463
464source "lib/Kconfig"
Chris Metcalfa78c9422010-10-14 16:23:03 -0400465
466source "arch/tile/kvm/Kconfig"