xref: /openbmc/linux/arch/sparc/Kconfig (revision 15e47304)
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 OF
16	select OF_PROMTREE
17	select HAVE_IDE
18	select HAVE_OPROFILE
19	select HAVE_ARCH_KGDB if !SMP || SPARC64
20	select HAVE_ARCH_TRACEHOOK
21	select ARCH_WANT_OPTIONAL_GPIOLIB
22	select RTC_CLASS
23	select RTC_DRV_M48T59
24	select HAVE_IRQ_WORK
25	select HAVE_DMA_ATTRS
26	select HAVE_DMA_API_DEBUG
27	select HAVE_ARCH_JUMP_LABEL
28	select HAVE_GENERIC_HARDIRQS
29	select GENERIC_IRQ_SHOW
30	select ARCH_WANT_IPC_PARSE_VERSION
31	select USE_GENERIC_SMP_HELPERS if SMP
32	select GENERIC_PCI_IOMAP
33	select HAVE_NMI_WATCHDOG if SPARC64
34	select HAVE_BPF_JIT
35	select GENERIC_SMP_IDLE_THREAD
36	select GENERIC_CMOS_UPDATE
37	select GENERIC_CLOCKEVENTS
38	select GENERIC_STRNCPY_FROM_USER
39	select GENERIC_STRNLEN_USER
40
41config SPARC32
42	def_bool !64BIT
43	select GENERIC_ATOMIC64
44	select CLZ_TAB
45
46config SPARC64
47	def_bool 64BIT
48	select ARCH_SUPPORTS_MSI
49	select HAVE_FUNCTION_TRACER
50	select HAVE_FUNCTION_GRAPH_TRACER
51	select HAVE_FUNCTION_GRAPH_FP_TEST
52	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
53	select HAVE_KRETPROBES
54	select HAVE_KPROBES
55	select HAVE_RCU_TABLE_FREE if SMP
56	select HAVE_MEMBLOCK
57	select HAVE_MEMBLOCK_NODE_MAP
58	select HAVE_SYSCALL_WRAPPERS
59	select HAVE_DYNAMIC_FTRACE
60	select HAVE_FTRACE_MCOUNT_RECORD
61	select HAVE_SYSCALL_TRACEPOINTS
62	select RTC_DRV_CMOS
63	select RTC_DRV_BQ4802
64	select RTC_DRV_SUN4V
65	select RTC_DRV_STARFIRE
66	select HAVE_PERF_EVENTS
67	select PERF_USE_VMALLOC
68	select IRQ_PREFLOW_FASTEOI
69	select ARCH_HAVE_NMI_SAFE_CMPXCHG
70	select HAVE_C_RECORDMCOUNT
71	select NO_BOOTMEM
72
73config ARCH_DEFCONFIG
74	string
75	default "arch/sparc/configs/sparc32_defconfig" if SPARC32
76	default "arch/sparc/configs/sparc64_defconfig" if SPARC64
77
78# CONFIG_BITS can be used at source level to get 32/64 bits
79config BITS
80	int
81	default 32 if SPARC32
82	default 64 if SPARC64
83
84config IOMMU_HELPER
85	bool
86	default y if SPARC64
87
88config STACKTRACE_SUPPORT
89	bool
90	default y if SPARC64
91
92config LOCKDEP_SUPPORT
93	bool
94	default y if SPARC64
95
96config HAVE_LATENCYTOP_SUPPORT
97	bool
98	default y if SPARC64
99
100config AUDIT_ARCH
101	bool
102	default y
103
104config HAVE_SETUP_PER_CPU_AREA
105	def_bool y if SPARC64
106
107config NEED_PER_CPU_EMBED_FIRST_CHUNK
108	def_bool y if SPARC64
109
110config NEED_PER_CPU_PAGE_FIRST_CHUNK
111	def_bool y if SPARC64
112
113config MMU
114	bool
115	default y
116
117config HIGHMEM
118	bool
119	default y if SPARC32
120
121config ZONE_DMA
122	bool
123	default y if SPARC32
124
125config NEED_DMA_MAP_STATE
126	def_bool y
127
128config NEED_SG_DMA_LENGTH
129	def_bool y
130
131config GENERIC_ISA_DMA
132	bool
133	default y if SPARC32
134
135config GENERIC_GPIO
136	bool
137	help
138	  Generic GPIO API support
139
140config ARCH_NO_VIRT_TO_BUS
141	def_bool y
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 single 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	  singleprocessor machines. On a singleprocessor 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#howto>.
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 if !ULTRA_HAS_POPULATION_COUNT
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# Makefile helpers
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
229choice
230	prompt "Kernel page size" if SPARC64
231	default SPARC64_PAGE_SIZE_8KB
232
233config SPARC64_PAGE_SIZE_8KB
234	bool "8KB"
235	help
236	  This lets you select the page size of the kernel.
237
238	  8KB and 64KB work quite well, since SPARC ELF sections
239	  provide for up to 64KB alignment.
240
241	  If you don't know what to do, choose 8KB.
242
243config SPARC64_PAGE_SIZE_64KB
244	bool "64KB"
245
246endchoice
247
248config SECCOMP
249	bool "Enable seccomp to safely compute untrusted bytecode"
250	depends on SPARC64 && PROC_FS
251	default y
252	help
253	  This kernel feature is useful for number crunching applications
254	  that may need to compute untrusted bytecode during their
255	  execution. By using pipes or other transports made available to
256	  the process as file descriptors supporting the read/write
257	  syscalls, it's possible to isolate those applications in
258	  their own address space using seccomp. Once seccomp is
259	  enabled via /proc/<pid>/seccomp, it cannot be disabled
260	  and the task is only allowed to execute a few safe syscalls
261	  defined by each seccomp mode.
262
263	  If unsure, say Y. Only embedded should say N here.
264
265config HOTPLUG_CPU
266	bool "Support for hot-pluggable CPUs"
267	depends on SPARC64 && SMP
268	select HOTPLUG
269	help
270	  Say Y here to experiment with turning CPUs off and on.  CPUs
271	  can be controlled through /sys/devices/system/cpu/cpu#.
272	  Say N if you want to disable CPU hotplug.
273
274if SPARC64
275source "drivers/cpufreq/Kconfig"
276
277config US3_FREQ
278	tristate "UltraSPARC-III CPU Frequency driver"
279	depends on CPU_FREQ
280	select CPU_FREQ_TABLE
281	help
282	  This adds the CPUFreq driver for UltraSPARC-III processors.
283
284	  For details, take a look at <file:Documentation/cpu-freq>.
285
286	  If in doubt, say N.
287
288config US2E_FREQ
289	tristate "UltraSPARC-IIe CPU Frequency driver"
290	depends on CPU_FREQ
291	select CPU_FREQ_TABLE
292	help
293	  This adds the CPUFreq driver for UltraSPARC-IIe processors.
294
295	  For details, take a look at <file:Documentation/cpu-freq>.
296
297	  If in doubt, say N.
298
299endif
300
301config US3_MC
302	tristate "UltraSPARC-III Memory Controller driver"
303	depends on SPARC64
304	default y
305	help
306	  This adds a driver for the UltraSPARC-III memory controller.
307	  Loading this driver allows exact mnemonic strings to be
308	  printed in the event of a memory error, so that the faulty DIMM
309	  on the motherboard can be matched to the error.
310
311	  If in doubt, say Y, as this information can be very useful.
312
313# Global things across all Sun machines.
314config GENERIC_LOCKBREAK
315	bool
316	default y
317	depends on SPARC64 && SMP && PREEMPT
318
319choice
320	prompt "SPARC64 Huge TLB Page Size"
321	depends on SPARC64 && HUGETLB_PAGE
322	default HUGETLB_PAGE_SIZE_4MB
323
324config HUGETLB_PAGE_SIZE_4MB
325	bool "4MB"
326
327config HUGETLB_PAGE_SIZE_512K
328	bool "512K"
329
330config HUGETLB_PAGE_SIZE_64K
331	depends on !SPARC64_PAGE_SIZE_64KB
332	bool "64K"
333
334endchoice
335
336config NUMA
337	bool "NUMA support"
338	depends on SPARC64 && SMP
339
340config NODES_SHIFT
341	int
342	default "4"
343	depends on NEED_MULTIPLE_NODES
344
345# Some NUMA nodes have memory ranges that span
346# other nodes.  Even though a pfn is valid and
347# between a node's start and end pfns, it may not
348# reside on that node.  See memmap_init_zone()
349# for details.
350config NODES_SPAN_OTHER_NODES
351	def_bool y
352	depends on NEED_MULTIPLE_NODES
353
354config ARCH_SELECT_MEMORY_MODEL
355	def_bool y if SPARC64
356
357config ARCH_SPARSEMEM_ENABLE
358	def_bool y if SPARC64
359	select SPARSEMEM_VMEMMAP_ENABLE
360
361config ARCH_SPARSEMEM_DEFAULT
362	def_bool y if SPARC64
363
364source "mm/Kconfig"
365
366config SCHED_SMT
367	bool "SMT (Hyperthreading) scheduler support"
368	depends on SPARC64 && SMP
369	default y
370	help
371	  SMT scheduler support improves the CPU scheduler's decision making
372	  when dealing with SPARC cpus at a cost of slightly increased overhead
373	  in some places. If unsure say N here.
374
375config SCHED_MC
376	bool "Multi-core scheduler support"
377	depends on SPARC64 && SMP
378	default y
379	help
380	  Multi-core scheduler support improves the CPU scheduler's decision
381	  making when dealing with multi-core CPU chips at a cost of slightly
382	  increased overhead in some places. If unsure say N here.
383
384source "kernel/Kconfig.preempt"
385
386config CMDLINE_BOOL
387	bool "Default bootloader kernel arguments"
388	depends on SPARC64
389
390config CMDLINE
391	string "Initial kernel command string"
392	depends on CMDLINE_BOOL
393	default "console=ttyS0,9600 root=/dev/sda1"
394	help
395	  Say Y here if you want to be able to pass default arguments to
396	  the kernel. This will be overridden by the bootloader, if you
397	  use one (such as SILO). This is most useful if you want to boot
398	  a kernel from TFTP, and want default options to be available
399	  with having them passed on the command line.
400
401	  NOTE: This option WILL override the PROM bootargs setting!
402
403config SUN_PM
404	bool
405	default y if SPARC32
406	help
407	  Enable power management and CPU standby features on supported
408	  SPARC platforms.
409
410config SPARC_LED
411	tristate "Sun4m LED driver"
412	depends on SPARC32
413	help
414	  This driver toggles the front-panel LED on sun4m systems
415	  in a user-specifiable manner.  Its state can be probed
416	  by reading /proc/led and its blinking mode can be changed
417	  via writes to /proc/led
418
419config SERIAL_CONSOLE
420	bool
421	depends on SPARC32
422	default y
423	---help---
424	  If you say Y here, it will be possible to use a serial port as the
425	  system console (the system console is the device which receives all
426	  kernel messages and warnings and which allows logins in single user
427	  mode). This could be useful if some terminal or printer is connected
428	  to that serial port.
429
430	  Even if you say Y here, the currently visible virtual console
431	  (/dev/tty0) will still be used as the system console by default, but
432	  you can alter that using a kernel command line option such as
433	  "console=ttyS1". (Try "man bootparam" or see the documentation of
434	  your boot loader (silo) about how to pass options to the kernel at
435	  boot time.)
436
437	  If you don't have a graphics card installed and you say Y here, the
438	  kernel will automatically use the first serial line, /dev/ttyS0, as
439	  system console.
440
441	  If unsure, say N.
442
443config SPARC_LEON
444	bool "Sparc Leon processor family"
445	depends on SPARC32
446	---help---
447	  If you say Y here if you are running on a SPARC-LEON processor.
448	  The LEON processor is a synthesizable VHDL model of the
449	  SPARC-v8 standard. LEON is  part of the GRLIB collection of
450	  IP cores that are distributed under GPL. GRLIB can be downloaded
451	  from www.gaisler.com. You can download a sparc-linux cross-compilation
452	  toolchain at www.gaisler.com.
453
454if SPARC_LEON
455menu "U-Boot options"
456
457config UBOOT_LOAD_ADDR
458	hex "uImage Load Address"
459	default 0x40004000
460	---help---
461	 U-Boot kernel load address, the address in physical address space
462	 where u-boot will place the Linux kernel before booting it.
463	 This address is normally the base address of main memory + 0x4000.
464
465config UBOOT_FLASH_ADDR
466	hex "uImage.o Load Address"
467	default 0x00080000
468	---help---
469	 Optional setting only affecting the uImage.o ELF-image used to
470	 download the uImage file to the target using a ELF-loader other than
471	 U-Boot. It may for example be used to download an uImage to FLASH with
472	 the GRMON utility before even starting u-boot.
473
474config UBOOT_ENTRY_ADDR
475	hex "uImage Entry Address"
476	default 0xf0004000
477	---help---
478	 Do not change this unless you know what you're doing. This is
479	 hardcoded by the SPARC32 and LEON port.
480
481	 This is the virtual address u-boot jumps to when booting the Linux
482	 Kernel.
483
484endmenu
485endif
486
487endmenu
488
489menu "Bus options (PCI etc.)"
490config SBUS
491	bool
492	default y
493
494config SBUSCHAR
495	bool
496	default y
497
498config SUN_LDOMS
499	bool "Sun Logical Domains support"
500	depends on SPARC64
501	help
502	  Say Y here is you want to support virtual devices via
503	  Logical Domains.
504
505config PCI
506	bool "Support for PCI and PS/2 keyboard/mouse"
507	help
508	  Find out whether your system includes a PCI bus. PCI is the name of
509	  a bus system, i.e. the way the CPU talks to the other stuff inside
510	  your box.  If you say Y here, the kernel will include drivers and
511	  infrastructure code to support PCI bus devices.
512
513	  CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
514	  CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
515	  All of these platforms are extremely obscure, so say N if unsure.
516
517config PCI_DOMAINS
518	def_bool PCI if SPARC64
519
520config PCI_SYSCALL
521	def_bool PCI
522
523config PCIC_PCI
524	bool
525	depends on PCI && SPARC32 && !SPARC_LEON
526	default y
527
528config LEON_PCI
529	bool
530	depends on PCI && SPARC_LEON
531	default y
532
533config GRPCI2
534	bool "GRPCI2 Host Bridge Support"
535	depends on LEON_PCI
536	default y
537	help
538	  Say Y here to include the GRPCI2 Host Bridge Driver.
539
540source "drivers/pci/Kconfig"
541
542source "drivers/pcmcia/Kconfig"
543
544config SUN_OPENPROMFS
545	tristate "Openprom tree appears in /proc/openprom"
546	help
547	  If you say Y, the OpenPROM device tree will be available as a
548	  virtual file system, which you can mount to /proc/openprom by "mount
549	  -t openpromfs none /proc/openprom".
550
551	  To compile the /proc/openprom support as a module, choose M here: the
552	  module will be called openpromfs.
553
554	  Only choose N if you know in advance that you will not need to modify
555	  OpenPROM settings on the running system.
556
557# Makefile helper
558config SPARC64_PCI
559	bool
560	default y
561	depends on SPARC64 && PCI
562
563endmenu
564
565menu "Executable file formats"
566
567source "fs/Kconfig.binfmt"
568
569config COMPAT
570	bool
571	depends on SPARC64
572	default y
573	select COMPAT_BINFMT_ELF
574	select ARCH_WANT_OLD_COMPAT_IPC
575
576config SYSVIPC_COMPAT
577	bool
578	depends on COMPAT && SYSVIPC
579	default y
580
581config KEYS_COMPAT
582	def_bool y if COMPAT && KEYS
583
584endmenu
585
586source "net/Kconfig"
587
588source "drivers/Kconfig"
589
590source "drivers/sbus/char/Kconfig"
591
592source "fs/Kconfig"
593
594source "arch/sparc/Kconfig.debug"
595
596source "security/Kconfig"
597
598source "crypto/Kconfig"
599
600source "lib/Kconfig"
601