1config 64BIT
2 bool "64-bit kernel" if ARCH = "sparc"
3 default ARCH = "sparc64"
4 help
5 SPARC is a family of RISC microprocessors designed and marketed by
6 Sun Microsystems, incorporated. They are very widely found in Sun
7 workstations and clones.
8
9 Say yes to build a 64-bit kernel - formerly known as sparc64
10 Say no to build a 32-bit kernel - formerly known as sparc
11
12config SPARC
13 bool
14 default y
15 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
16 select ARCH_MIGHT_HAVE_PC_SERIO
17 select OF
18 select OF_PROMTREE
19 select HAVE_IDE
20 select HAVE_OPROFILE
21 select HAVE_ARCH_KGDB if !SMP || SPARC64
22 select HAVE_ARCH_TRACEHOOK
23 select SYSCTL_EXCEPTION_TRACE
24 select ARCH_WANT_OPTIONAL_GPIOLIB
25 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
26 select RTC_CLASS
27 select RTC_DRV_M48T59
28 select HAVE_DMA_ATTRS
29 select HAVE_DMA_API_DEBUG
30 select HAVE_ARCH_JUMP_LABEL if SPARC64
31 select GENERIC_IRQ_SHOW
32 select ARCH_WANT_IPC_PARSE_VERSION
33 select GENERIC_PCI_IOMAP
34 select HAVE_NMI_WATCHDOG if SPARC64
35 select HAVE_BPF_JIT
36 select HAVE_DEBUG_BUGVERBOSE
37 select GENERIC_SMP_IDLE_THREAD
38 select GENERIC_CMOS_UPDATE
39 select GENERIC_CLOCKEVENTS
40 select GENERIC_STRNCPY_FROM_USER
41 select GENERIC_STRNLEN_USER
42 select MODULES_USE_ELF_RELA
43 select ODD_RT_SIGACTION
44 select OLD_SIGSUSPEND
45 select ARCH_HAS_SG_CHAIN
46
47config SPARC32
48 def_bool !64BIT
49 select GENERIC_ATOMIC64
50 select CLZ_TAB
51 select HAVE_UID16
52 select OLD_SIGACTION
53
54config SPARC64
55 def_bool 64BIT
56 select HAVE_FUNCTION_TRACER
57 select HAVE_FUNCTION_GRAPH_TRACER
58 select HAVE_FUNCTION_GRAPH_FP_TEST
59 select HAVE_KRETPROBES
60 select HAVE_KPROBES
61 select HAVE_RCU_TABLE_FREE if SMP
62 select HAVE_MEMBLOCK
63 select HAVE_MEMBLOCK_NODE_MAP
64 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
65 select HAVE_DYNAMIC_FTRACE
66 select HAVE_FTRACE_MCOUNT_RECORD
67 select HAVE_SYSCALL_TRACEPOINTS
68 select HAVE_CONTEXT_TRACKING
69 select HAVE_DEBUG_KMEMLEAK
70 select SPARSE_IRQ
71 select RTC_DRV_CMOS
72 select RTC_DRV_BQ4802
73 select RTC_DRV_SUN4V
74 select RTC_DRV_STARFIRE
75 select HAVE_PERF_EVENTS
76 select PERF_USE_VMALLOC
77 select IRQ_PREFLOW_FASTEOI
78 select ARCH_HAVE_NMI_SAFE_CMPXCHG
79 select HAVE_C_RECORDMCOUNT
80 select NO_BOOTMEM
81 select HAVE_ARCH_AUDITSYSCALL
82 select ARCH_SUPPORTS_ATOMIC_RMW
83
84config ARCH_DEFCONFIG
85 string
86 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
87 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
88
89config IOMMU_HELPER
90 bool
91 default y if SPARC64
92
93config STACKTRACE_SUPPORT
94 bool
95 default y if SPARC64
96
97config LOCKDEP_SUPPORT
98 bool
99 default y if SPARC64
100
101config HAVE_LATENCYTOP_SUPPORT
102 bool
103 default y if SPARC64
104
105config ARCH_HIBERNATION_POSSIBLE
106 def_bool y if SPARC64
107
108config AUDIT_ARCH
109 bool
110 default y
111
112config HAVE_SETUP_PER_CPU_AREA
113 def_bool y if SPARC64
114
115config NEED_PER_CPU_EMBED_FIRST_CHUNK
116 def_bool y if SPARC64
117
118config NEED_PER_CPU_PAGE_FIRST_CHUNK
119 def_bool y if SPARC64
120
121config MMU
122 bool
123 default y
124
125config HIGHMEM
126 bool
127 default y if SPARC32
128
129config ZONE_DMA
130 bool
131 default y if SPARC32
132
133config NEED_DMA_MAP_STATE
134 def_bool y
135
136config NEED_SG_DMA_LENGTH
137 def_bool y
138
139config GENERIC_ISA_DMA
140 bool
141 default y if SPARC32
142
143config ARCH_SUPPORTS_DEBUG_PAGEALLOC
144 def_bool y if SPARC64
145
146source "init/Kconfig"
147
148source "kernel/Kconfig.freezer"
149
150menu "Processor type and features"
151
152config SMP
153 bool "Symmetric multi-processing support"
154 ---help---
155 This enables support for systems with more than one CPU. If you have
156 a system with only one CPU, say N. If you have a system with more
157 than one CPU, say Y.
158
159 If you say N here, the kernel will run on uni- and multiprocessor
160 machines, but will use only one CPU of a multiprocessor machine. If
161 you say Y here, the kernel will run on many, but not all,
162 uniprocessor machines. On a uniprocessor machine, the kernel
163 will run faster if you say N here.
164
165 People using multiprocessor machines who say Y here should also say
166 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
167 Management" code will be disabled if you say Y here.
168
169 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
170 available at <http://www.tldp.org/docs.html
171
172 If you don't know what to do here, say N.
173
174config NR_CPUS
175 int "Maximum number of CPUs"
176 depends on SMP
177 range 2 32 if SPARC32
178 range 2 1024 if SPARC64
179 default 32 if SPARC32
180 default 64 if SPARC64
181
182source kernel/Kconfig.hz
183
184config RWSEM_GENERIC_SPINLOCK
185 bool
186 default y if SPARC32
187
188config RWSEM_XCHGADD_ALGORITHM
189 bool
190 default y if SPARC64
191
192config GENERIC_HWEIGHT
193 bool
194 default y
195
196config GENERIC_CALIBRATE_DELAY
197 bool
198 default y
199
200config ARCH_MAY_HAVE_PC_FDC
201 bool
202 default y
203
204config EMULATED_CMPXCHG
205 bool
206 default y if SPARC32
207 help
208 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
209 is emulated, and therefore it is not completely atomic.
210
211
212config SPARC32_SMP
213 bool
214 default y
215 depends on SPARC32 && SMP
216
217config SPARC64_SMP
218 bool
219 default y
220 depends on SPARC64 && SMP
221
222config EARLYFB
223 bool "Support for early boot text console"
224 default y
225 depends on SPARC64
226 help
227 Say Y here to enable a faster early framebuffer boot console.
228
229config SECCOMP
230 bool "Enable seccomp to safely compute untrusted bytecode"
231 depends on SPARC64 && PROC_FS
232 default y
233 help
234 This kernel feature is useful for number crunching applications
235 that may need to compute untrusted bytecode during their
236 execution. By using pipes or other transports made available to
237 the process as file descriptors supporting the read/write
238 syscalls, it's possible to isolate those applications in
239 their own address space using seccomp. Once seccomp is
240 enabled via /proc/<pid>/seccomp, it cannot be disabled
241 and the task is only allowed to execute a few safe syscalls
242 defined by each seccomp mode.
243
244 If unsure, say Y. Only embedded should say N here.
245
246config HOTPLUG_CPU
247 bool "Support for hot-pluggable CPUs"
248 depends on SPARC64 && SMP
249 help
250 Say Y here to experiment with turning CPUs off and on. CPUs
251 can be controlled through /sys/devices/system/cpu/cpu#.
252 Say N if you want to disable CPU hotplug.
253
254if SPARC64
255source "drivers/cpufreq/Kconfig"
256endif
257
258config US3_MC
259 tristate "UltraSPARC-III Memory Controller driver"
260 depends on SPARC64
261 default y
262 help
263 This adds a driver for the UltraSPARC-III memory controller.
264 Loading this driver allows exact mnemonic strings to be
265 printed in the event of a memory error, so that the faulty DIMM
266 on the motherboard can be matched to the error.
267
268 If in doubt, say Y, as this information can be very useful.
269
270
271config GENERIC_LOCKBREAK
272 bool
273 default y
274 depends on SPARC64 && SMP && PREEMPT
275
276config NUMA
277 bool "NUMA support"
278 depends on SPARC64 && SMP
279
280config NODES_SHIFT
281 int
282 default "4"
283 depends on NEED_MULTIPLE_NODES
284
285
286
287
288
289
290config NODES_SPAN_OTHER_NODES
291 def_bool y
292 depends on NEED_MULTIPLE_NODES
293
294config ARCH_SELECT_MEMORY_MODEL
295 def_bool y if SPARC64
296
297config ARCH_SPARSEMEM_ENABLE
298 def_bool y if SPARC64
299 select SPARSEMEM_VMEMMAP_ENABLE
300
301config ARCH_SPARSEMEM_DEFAULT
302 def_bool y if SPARC64
303
304source "mm/Kconfig"
305
306if SPARC64
307source "kernel/power/Kconfig"
308endif
309
310config SCHED_SMT
311 bool "SMT (Hyperthreading) scheduler support"
312 depends on SPARC64 && SMP
313 default y
314 help
315 SMT scheduler support improves the CPU scheduler's decision making
316 when dealing with SPARC cpus at a cost of slightly increased overhead
317 in some places. If unsure say N here.
318
319config SCHED_MC
320 bool "Multi-core scheduler support"
321 depends on SPARC64 && SMP
322 default y
323 help
324 Multi-core scheduler support improves the CPU scheduler's decision
325 making when dealing with multi-core CPU chips at a cost of slightly
326 increased overhead in some places. If unsure say N here.
327
328source "kernel/Kconfig.preempt"
329
330config CMDLINE_BOOL
331 bool "Default bootloader kernel arguments"
332 depends on SPARC64
333
334config CMDLINE
335 string "Initial kernel command string"
336 depends on CMDLINE_BOOL
337 default "console=ttyS0,9600 root=/dev/sda1"
338 help
339 Say Y here if you want to be able to pass default arguments to
340 the kernel. This will be overridden by the bootloader, if you
341 use one (such as SILO). This is most useful if you want to boot
342 a kernel from TFTP, and want default options to be available
343 with having them passed on the command line.
344
345 NOTE: This option WILL override the PROM bootargs setting!
346
347config SUN_PM
348 bool
349 default y if SPARC32
350 help
351 Enable power management and CPU standby features on supported
352 SPARC platforms.
353
354config SPARC_LED
355 tristate "Sun4m LED driver"
356 depends on SPARC32
357 help
358 This driver toggles the front-panel LED on sun4m systems
359 in a user-specifiable manner. Its state can be probed
360 by reading /proc/led and its blinking mode can be changed
361 via writes to /proc/led
362
363config SERIAL_CONSOLE
364 bool
365 depends on SPARC32
366 default y
367 ---help---
368 If you say Y here, it will be possible to use a serial port as the
369 system console (the system console is the device which receives all
370 kernel messages and warnings and which allows logins in single user
371 mode). This could be useful if some terminal or printer is connected
372 to that serial port.
373
374 Even if you say Y here, the currently visible virtual console
375 (/dev/tty0) will still be used as the system console by default, but
376 you can alter that using a kernel command line option such as
377 "console=ttyS1". (Try "man bootparam" or see the documentation of
378 your boot loader (silo) about how to pass options to the kernel at
379 boot time.)
380
381 If you don't have a graphics card installed and you say Y here, the
382 kernel will automatically use the first serial line, /dev/ttyS0, as
383 system console.
384
385 If unsure, say N.
386
387config SPARC_LEON
388 bool "Sparc Leon processor family"
389 depends on SPARC32
390 select USB_EHCI_BIG_ENDIAN_MMIO
391 select USB_EHCI_BIG_ENDIAN_DESC
392 ---help---
393 If you say Y here if you are running on a SPARC-LEON processor.
394 The LEON processor is a synthesizable VHDL model of the
395 SPARC-v8 standard. LEON is part of the GRLIB collection of
396 IP cores that are distributed under GPL. GRLIB can be downloaded
397 from www.gaisler.com. You can download a sparc-linux cross-compilation
398 toolchain at www.gaisler.com.
399
400if SPARC_LEON
401menu "U-Boot options"
402
403config UBOOT_LOAD_ADDR
404 hex "uImage Load Address"
405 default 0x40004000
406 ---help---
407 U-Boot kernel load address, the address in physical address space
408 where u-boot will place the Linux kernel before booting it.
409 This address is normally the base address of main memory + 0x4000.
410
411config UBOOT_FLASH_ADDR
412 hex "uImage.o Load Address"
413 default 0x00080000
414 ---help---
415 Optional setting only affecting the uImage.o ELF-image used to
416 download the uImage file to the target using a ELF-loader other than
417 U-Boot. It may for example be used to download an uImage to FLASH with
418 the GRMON utility before even starting u-boot.
419
420config UBOOT_ENTRY_ADDR
421 hex "uImage Entry Address"
422 default 0xf0004000
423 ---help---
424 Do not change this unless you know what you're doing. This is
425 hardcoded by the SPARC32 and LEON port.
426
427 This is the virtual address u-boot jumps to when booting the Linux
428 Kernel.
429
430endmenu
431endif
432
433endmenu
434
435menu "Bus options (PCI etc.)"
436config SBUS
437 bool
438 default y
439
440config SBUSCHAR
441 bool
442 default y
443
444config SUN_LDOMS
445 bool "Sun Logical Domains support"
446 depends on SPARC64
447 help
448 Say Y here is you want to support virtual devices via
449 Logical Domains.
450
451config PCI
452 bool "Support for PCI and PS/2 keyboard/mouse"
453 help
454 Find out whether your system includes a PCI bus. PCI is the name of
455 a bus system, i.e. the way the CPU talks to the other stuff inside
456 your box. If you say Y here, the kernel will include drivers and
457 infrastructure code to support PCI bus devices.
458
459 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
460 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
461 All of these platforms are extremely obscure, so say N if unsure.
462
463config PCI_DOMAINS
464 def_bool PCI if SPARC64
465
466config PCI_SYSCALL
467 def_bool PCI
468
469config PCIC_PCI
470 bool
471 depends on PCI && SPARC32 && !SPARC_LEON
472 default y
473
474config LEON_PCI
475 bool
476 depends on PCI && SPARC_LEON
477 default y
478
479config SPARC_GRPCI1
480 bool "GRPCI Host Bridge Support"
481 depends on LEON_PCI
482 default y
483 help
484 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
485 PCI host controller is typically found in GRLIB SPARC32/LEON
486 systems. The driver has one property (all_pci_errors) controlled
487 from the bootloader that makes the GRPCI to generate interrupts
488 on detected PCI Parity and System errors.
489
490config SPARC_GRPCI2
491 bool "GRPCI2 Host Bridge Support"
492 depends on LEON_PCI
493 default y
494 help
495 Say Y here to include the GRPCI2 Host Bridge Driver.
496
497source "drivers/pci/Kconfig"
498
499source "drivers/pcmcia/Kconfig"
500
501config SUN_OPENPROMFS
502 tristate "Openprom tree appears in /proc/openprom"
503 help
504 If you say Y, the OpenPROM device tree will be available as a
505 virtual file system, which you can mount to /proc/openprom by "mount
506 -t openpromfs none /proc/openprom".
507
508 To compile the /proc/openprom support as a module, choose M here: the
509 module will be called openpromfs.
510
511 Only choose N if you know in advance that you will not need to modify
512 OpenPROM settings on the running system.
513
514
515config SPARC64_PCI
516 bool
517 default y
518 depends on SPARC64 && PCI
519
520config SPARC64_PCI_MSI
521 bool
522 default y
523 depends on SPARC64_PCI && PCI_MSI
524
525endmenu
526
527menu "Executable file formats"
528
529source "fs/Kconfig.binfmt"
530
531config COMPAT
532 bool
533 depends on SPARC64
534 default y
535 select COMPAT_BINFMT_ELF
536 select HAVE_UID16
537 select ARCH_WANT_OLD_COMPAT_IPC
538 select COMPAT_OLD_SIGACTION
539
540config SYSVIPC_COMPAT
541 bool
542 depends on COMPAT && SYSVIPC
543 default y
544
545config KEYS_COMPAT
546 def_bool y if COMPAT && KEYS
547
548endmenu
549
550source "net/Kconfig"
551
552source "drivers/Kconfig"
553
554source "drivers/sbus/char/Kconfig"
555
556source "fs/Kconfig"
557
558source "arch/sparc/Kconfig.debug"
559
560source "security/Kconfig"
561
562source "crypto/Kconfig"
563
564source "lib/Kconfig"
565
