summaryrefslogtreecommitdiffstats
path: root/arch/sparc/Kconfig
blob: 0f535debf8025df4cdd4d378f848c3a4049aaf4b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
config 64BIT
	bool "64-bit kernel" if "$(ARCH)" = "sparc"
	default "$(ARCH)" = "sparc64"
	help
	  SPARC is a family of RISC microprocessors designed and marketed by
	  Sun Microsystems, incorporated.  They are very widely found in Sun
	  workstations and clones.

	  Say yes to build a 64-bit kernel - formerly known as sparc64
	  Say no to build a 32-bit kernel - formerly known as sparc

config SPARC
	bool
	default y
	select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
	select ARCH_MIGHT_HAVE_PC_SERIO
	select OF
	select OF_PROMTREE
	select HAVE_IDE
	select HAVE_OPROFILE
	select HAVE_ARCH_KGDB if !SMP || SPARC64
	select HAVE_ARCH_TRACEHOOK
	select HAVE_EXIT_THREAD
	select SYSCTL_EXCEPTION_TRACE
	select RTC_CLASS
	select RTC_DRV_M48T59
	select RTC_SYSTOHC
	select HAVE_ARCH_JUMP_LABEL if SPARC64
	select GENERIC_IRQ_SHOW
	select ARCH_WANT_IPC_PARSE_VERSION
	select GENERIC_PCI_IOMAP
	select HAVE_NMI_WATCHDOG if SPARC64
	select HAVE_CBPF_JIT if SPARC32
	select HAVE_EBPF_JIT if SPARC64
	select HAVE_DEBUG_BUGVERBOSE
	select GENERIC_SMP_IDLE_THREAD
	select GENERIC_CLOCKEVENTS
	select GENERIC_STRNCPY_FROM_USER
	select GENERIC_STRNLEN_USER
	select MODULES_USE_ELF_RELA
	select ODD_RT_SIGACTION
	select OLD_SIGSUSPEND
	select ARCH_HAS_SG_CHAIN
	select CPU_NO_EFFICIENT_FFS
	select LOCKDEP_SMALL if LOCKDEP
	select NEED_DMA_MAP_STATE
	select NEED_SG_DMA_LENGTH

config SPARC32
	def_bool !64BIT
	select GENERIC_ATOMIC64
	select CLZ_TAB
	select HAVE_UID16
	select OLD_SIGACTION

config SPARC64
	def_bool 64BIT
	select HAVE_FUNCTION_TRACER
	select HAVE_FUNCTION_GRAPH_TRACER
	select HAVE_KRETPROBES
	select HAVE_KPROBES
	select HAVE_RCU_TABLE_FREE if SMP
	select HAVE_MEMBLOCK
	select HAVE_MEMBLOCK_NODE_MAP
	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
	select HAVE_DYNAMIC_FTRACE
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_SYSCALL_TRACEPOINTS
	select HAVE_CONTEXT_TRACKING
	select HAVE_DEBUG_KMEMLEAK
	select IOMMU_HELPER
	select SPARSE_IRQ
	select RTC_DRV_CMOS
	select RTC_DRV_BQ4802
	select RTC_DRV_SUN4V
	select RTC_DRV_STARFIRE
	select HAVE_PERF_EVENTS
	select PERF_USE_VMALLOC
	select IRQ_PREFLOW_FASTEOI
	select ARCH_HAVE_NMI_SAFE_CMPXCHG
	select HAVE_C_RECORDMCOUNT
	select NO_BOOTMEM
	select HAVE_ARCH_AUDITSYSCALL
	select ARCH_SUPPORTS_ATOMIC_RMW
	select HAVE_NMI
	select HAVE_REGS_AND_STACK_ACCESS_API
	select ARCH_USE_QUEUED_RWLOCKS
	select ARCH_USE_QUEUED_SPINLOCKS
	select GENERIC_TIME_VSYSCALL
	select ARCH_CLOCKSOURCE_DATA
	select ARCH_HAS_PTE_SPECIAL

config ARCH_DEFCONFIG
	string
	default "arch/sparc/configs/sparc32_defconfig" if SPARC32
	default "arch/sparc/configs/sparc64_defconfig" if SPARC64

config ARCH_PROC_KCORE_TEXT
	def_bool y

config CPU_BIG_ENDIAN
	def_bool y

config ARCH_ATU
	bool
	default y if SPARC64

config STACKTRACE_SUPPORT
	bool
	default y if SPARC64

config LOCKDEP_SUPPORT
	bool
	default y if SPARC64

config ARCH_HIBERNATION_POSSIBLE
	def_bool y if SPARC64

config AUDIT_ARCH
	bool
	default y

config HAVE_SETUP_PER_CPU_AREA
	def_bool y if SPARC64

config NEED_PER_CPU_EMBED_FIRST_CHUNK
	def_bool y if SPARC64

config NEED_PER_CPU_PAGE_FIRST_CHUNK
	def_bool y if SPARC64

config MMU
	bool
	default y

config HIGHMEM
	bool
	default y if SPARC32

config ZONE_DMA
	bool
	default y if SPARC32

config GENERIC_ISA_DMA
	bool
	default y if SPARC32

config ARCH_SUPPORTS_DEBUG_PAGEALLOC
	def_bool y if SPARC64

config PGTABLE_LEVELS
	default 4 if 64BIT
	default 3

config ARCH_SUPPORTS_UPROBES
	def_bool y if SPARC64

source "init/Kconfig"

source "kernel/Kconfig.freezer"

menu "Processor type and features"

config SMP
	bool "Symmetric multi-processing support"
	---help---
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, say N. If you have a system with more
	  than one CPU, say Y.

	  If you say N here, the kernel will run on uni- and multiprocessor
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on many, but not all,
	  uniprocessor machines. On a uniprocessor machine, the kernel
	  will run faster if you say N here.

	  People using multiprocessor machines who say Y here should also say
	  Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
	  Management" code will be disabled if you say Y here.

	  See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
	  available at <http://www.tldp.org/docs.html#howto>.

	  If you don't know what to do here, say N.

config NR_CPUS
	int "Maximum number of CPUs"
	depends on SMP
	range 2 32 if SPARC32
	range 2 4096 if SPARC64
	default 32 if SPARC32
	default 4096 if SPARC64

source kernel/Kconfig.hz

config RWSEM_GENERIC_SPINLOCK
	bool
	default y if SPARC32

config RWSEM_XCHGADD_ALGORITHM
	bool
	default y if SPARC64

config GENERIC_HWEIGHT
	bool
	default y

config GENERIC_CALIBRATE_DELAY
	bool
	default y

config ARCH_MAY_HAVE_PC_FDC
	bool
	default y

config EMULATED_CMPXCHG
	bool
	default y if SPARC32
	help
	  Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
	  is emulated, and therefore it is not completely atomic.

# Makefile helpers
config SPARC32_SMP
	bool
	default y
	depends on SPARC32 && SMP

config SPARC64_SMP
	bool
	default y
	depends on SPARC64 && SMP

config EARLYFB
	bool "Support for early boot text console"
	default y
	depends on SPARC64
	help
	  Say Y here to enable a faster early framebuffer boot console.

config SECCOMP
	bool "Enable seccomp to safely compute untrusted bytecode"
	depends on SPARC64 && PROC_FS
	default y
	help
	  This kernel feature is useful for number crunching applications
	  that may need to compute untrusted bytecode during their
	  execution. By using pipes or other transports made available to
	  the process as file descriptors supporting the read/write
	  syscalls, it's possible to isolate those applications in
	  their own address space using seccomp. Once seccomp is
	  enabled via /proc/<pid>/seccomp, it cannot be disabled
	  and the task is only allowed to execute a few safe syscalls
	  defined by each seccomp mode.

	  If unsure, say Y. Only embedded should say N here.

config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs"
	depends on SPARC64 && SMP
	help
	  Say Y here to experiment with turning CPUs off and on.  CPUs
	  can be controlled through /sys/devices/system/cpu/cpu#.
	  Say N if you want to disable CPU hotplug.

if SPARC64
source "drivers/cpufreq/Kconfig"
endif

config US3_MC
	tristate "UltraSPARC-III Memory Controller driver"
	depends on SPARC64
	default y
	help
	  This adds a driver for the UltraSPARC-III memory controller.
	  Loading this driver allows exact mnemonic strings to be
	  printed in the event of a memory error, so that the faulty DIMM
	  on the motherboard can be matched to the error.

	  If in doubt, say Y, as this information can be very useful.

# Global things across all Sun machines.
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SPARC64 && SMP && PREEMPT

config NUMA
	bool "NUMA support"
	depends on SPARC64 && SMP

config NODES_SHIFT
	int "Maximum NUMA Nodes (as a power of 2)"
	range 4 5 if SPARC64
	default "5"
	depends on NEED_MULTIPLE_NODES
	help
	  Specify the maximum number of NUMA Nodes available on the target
	  system.  Increases memory reserved to accommodate various tables.

# Some NUMA nodes have memory ranges that span
# other nodes.  Even though a pfn is valid and
# between a node's start and end pfns, it may not
# reside on that node.  See memmap_init_zone()
# for details.
config NODES_SPAN_OTHER_NODES
	def_bool y
	depends on NEED_MULTIPLE_NODES

config ARCH_SELECT_MEMORY_MODEL
	def_bool y if SPARC64

config ARCH_SPARSEMEM_ENABLE
	def_bool y if SPARC64
	select SPARSEMEM_VMEMMAP_ENABLE

config ARCH_SPARSEMEM_DEFAULT
	def_bool y if SPARC64

config FORCE_MAX_ZONEORDER
	int "Maximum zone order"
	default "13"
	help
	  The kernel memory allocator divides physically contiguous memory
	  blocks into "zones", where each zone is a power of two number of
	  pages.  This option selects the largest power of two that the kernel
	  keeps in the memory allocator.  If you need to allocate very large
	  blocks of physically contiguous memory, then you may need to
	  increase this value.

	  This config option is actually maximum order plus one. For example,
	  a value of 13 means that the largest free memory block is 2^12 pages.

source "mm/Kconfig"

if SPARC64
source "kernel/power/Kconfig"
endif

config SCHED_SMT
	bool "SMT (Hyperthreading) scheduler support"
	depends on SPARC64 && SMP
	default y
	help
	  SMT scheduler support improves the CPU scheduler's decision making
	  when dealing with SPARC cpus at a cost of slightly increased overhead
	  in some places. If unsure say N here.

config SCHED_MC
	bool "Multi-core scheduler support"
	depends on SPARC64 && SMP
	default y
	help
	  Multi-core scheduler support improves the CPU scheduler's decision
	  making when dealing with multi-core CPU chips at a cost of slightly
	  increased overhead in some places. If unsure say N here.

source "kernel/Kconfig.preempt"

config CMDLINE_BOOL
	bool "Default bootloader kernel arguments"
	depends on SPARC64

config CMDLINE
	string "Initial kernel command string"
	depends on CMDLINE_BOOL
	default "console=ttyS0,9600 root=/dev/sda1"
	help
	  Say Y here if you want to be able to pass default arguments to
	  the kernel. This will be overridden by the bootloader, if you
	  use one (such as SILO). This is most useful if you want to boot
	  a kernel from TFTP, and want default options to be available
	  with having them passed on the command line.

	  NOTE: This option WILL override the PROM bootargs setting!

config SUN_PM
	bool
	default y if SPARC32
	help
	  Enable power management and CPU standby features on supported
	  SPARC platforms.

config SPARC_LED
	tristate "Sun4m LED driver"
	depends on SPARC32
	help
	  This driver toggles the front-panel LED on sun4m systems
	  in a user-specifiable manner.  Its state can be probed
	  by reading /proc/led and its blinking mode can be changed
	  via writes to /proc/led

config SERIAL_CONSOLE
	bool
	depends on SPARC32
	default y
	---help---
	  If you say Y here, it will be possible to use a serial port as the
	  system console (the system console is the device which receives all
	  kernel messages and warnings and which allows logins in single user
	  mode). This could be useful if some terminal or printer is connected
	  to that serial port.

	  Even if you say Y here, the currently visible virtual console
	  (/dev/tty0) will still be used as the system console by default, but
	  you can alter that using a kernel command line option such as
	  "console=ttyS1". (Try "man bootparam" or see the documentation of
	  your boot loader (silo) about how to pass options to the kernel at
	  boot time.)

	  If you don't have a graphics card installed and you say Y here, the
	  kernel will automatically use the first serial line, /dev/ttyS0, as
	  system console.

	  If unsure, say N.

config SPARC_LEON
	bool "Sparc Leon processor family"
	depends on SPARC32
	select USB_EHCI_BIG_ENDIAN_MMIO
	select USB_EHCI_BIG_ENDIAN_DESC
	select USB_UHCI_BIG_ENDIAN_MMIO
	select USB_UHCI_BIG_ENDIAN_DESC
	---help---
	  If you say Y here if you are running on a SPARC-LEON processor.
	  The LEON processor is a synthesizable VHDL model of the
	  SPARC-v8 standard. LEON is  part of the GRLIB collection of
	  IP cores that are distributed under GPL. GRLIB can be downloaded
	  from www.gaisler.com. You can download a sparc-linux cross-compilation
	  toolchain at www.gaisler.com.

if SPARC_LEON
menu "U-Boot options"

config UBOOT_LOAD_ADDR
	hex "uImage Load Address"
	default 0x40004000
	---help---
	 U-Boot kernel load address, the address in physical address space
	 where u-boot will place the Linux kernel before booting it.
	 This address is normally the base address of main memory + 0x4000.

config UBOOT_FLASH_ADDR
	hex "uImage.o Load Address"
	default 0x00080000
	---help---
	 Optional setting only affecting the uImage.o ELF-image used to
	 download the uImage file to the target using a ELF-loader other than
	 U-Boot. It may for example be used to download an uImage to FLASH with
	 the GRMON utility before even starting u-boot.

config UBOOT_ENTRY_ADDR
	hex "uImage Entry Address"
	default 0xf0004000
	---help---
	 Do not change this unless you know what you're doing. This is
	 hardcoded by the SPARC32 and LEON port.

	 This is the virtual address u-boot jumps to when booting the Linux
	 Kernel.

endmenu
endif

endmenu

menu "Bus options (PCI etc.)"
config SBUS
	bool
	default y

config SBUSCHAR
	bool
	default y

config SUN_LDOMS
	bool "Sun Logical Domains support"
	depends on SPARC64
	help
	  Say Y here is you want to support virtual devices via
	  Logical Domains.

config PCI
	bool "Support for PCI and PS/2 keyboard/mouse"
	help
	  Find out whether your system includes a PCI bus. PCI is the name of
	  a bus system, i.e. the way the CPU talks to the other stuff inside
	  your box.  If you say Y here, the kernel will include drivers and
	  infrastructure code to support PCI bus devices.

	  CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
	  CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
	  All of these platforms are extremely obscure, so say N if unsure.

config PCI_DOMAINS
	def_bool PCI if SPARC64

config PCI_SYSCALL
	def_bool PCI

config PCIC_PCI
	bool
	depends on PCI && SPARC32 && !SPARC_LEON
	default y

config LEON_PCI
	bool
	depends on PCI && SPARC_LEON
	default y

config SPARC_GRPCI1
	bool "GRPCI Host Bridge Support"
	depends on LEON_PCI
	default y
	help
	  Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
	  PCI host controller is typically found in GRLIB SPARC32/LEON
	  systems. The driver has one property (all_pci_errors) controlled
	  from the bootloader that makes the GRPCI to generate interrupts
	  on detected PCI Parity and System errors.

config SPARC_GRPCI2
	bool "GRPCI2 Host Bridge Support"
	depends on LEON_PCI
	default y
	help
	  Say Y here to include the GRPCI2 Host Bridge Driver.

source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

config SUN_OPENPROMFS
	tristate "Openprom tree appears in /proc/openprom"
	help
	  If you say Y, the OpenPROM device tree will be available as a
	  virtual file system, which you can mount to /proc/openprom by "mount
	  -t openpromfs none /proc/openprom".

	  To compile the /proc/openprom support as a module, choose M here: the
	  module will be called openpromfs.

	  Only choose N if you know in advance that you will not need to modify
	  OpenPROM settings on the running system.

# Makefile helpers
config SPARC64_PCI
	bool
	default y
	depends on SPARC64 && PCI

config SPARC64_PCI_MSI
	bool
	default y
	depends on SPARC64_PCI && PCI_MSI

endmenu

menu "Executable file formats"

source "fs/Kconfig.binfmt"

config COMPAT
	bool
	depends on SPARC64
	default y
	select COMPAT_BINFMT_ELF
	select HAVE_UID16
	select ARCH_WANT_OLD_COMPAT_IPC
	select COMPAT_OLD_SIGACTION

config SYSVIPC_COMPAT
	bool
	depends on COMPAT && SYSVIPC
	default y

endmenu

source "net/Kconfig"

source "drivers/Kconfig"

source "drivers/sbus/char/Kconfig"

source "fs/Kconfig"

source "arch/sparc/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"