xref: /openbmc/linux/arch/sparc/Kconfig (revision ae3473231e77a3f1909d48cd144cebe5e1d049b3)
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 HAVE_EXIT_THREAD
24	select SYSCTL_EXCEPTION_TRACE
25	select RTC_CLASS
26	select RTC_DRV_M48T59
27	select RTC_SYSTOHC
28	select HAVE_DMA_API_DEBUG
29	select HAVE_ARCH_JUMP_LABEL if SPARC64
30	select GENERIC_IRQ_SHOW
31	select ARCH_WANT_IPC_PARSE_VERSION
32	select GENERIC_PCI_IOMAP
33	select HAVE_NMI_WATCHDOG if SPARC64
34	select HAVE_CBPF_JIT
35	select HAVE_DEBUG_BUGVERBOSE
36	select GENERIC_SMP_IDLE_THREAD
37	select GENERIC_CLOCKEVENTS
38	select GENERIC_STRNCPY_FROM_USER
39	select GENERIC_STRNLEN_USER
40	select MODULES_USE_ELF_RELA
41	select ODD_RT_SIGACTION
42	select OLD_SIGSUSPEND
43	select ARCH_HAS_SG_CHAIN
44	select CPU_NO_EFFICIENT_FFS
45	select HAVE_ARCH_HARDENED_USERCOPY
46	select PROVE_LOCKING_SMALL if PROVE_LOCKING
47
48config SPARC32
49	def_bool !64BIT
50	select GENERIC_ATOMIC64
51	select CLZ_TAB
52	select HAVE_UID16
53	select OLD_SIGACTION
54
55config SPARC64
56	def_bool 64BIT
57	select HAVE_FUNCTION_TRACER
58	select HAVE_FUNCTION_GRAPH_TRACER
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	select HAVE_NMI
84
85config ARCH_DEFCONFIG
86	string
87	default "arch/sparc/configs/sparc32_defconfig" if SPARC32
88	default "arch/sparc/configs/sparc64_defconfig" if SPARC64
89
90config ARCH_PROC_KCORE_TEXT
91	def_bool y
92
93config ARCH_ATU
94	bool
95	default y if SPARC64
96
97config ARCH_DMA_ADDR_T_64BIT
98	bool
99	default y if ARCH_ATU
100
101config IOMMU_HELPER
102	bool
103	default y if SPARC64
104
105config STACKTRACE_SUPPORT
106	bool
107	default y if SPARC64
108
109config LOCKDEP_SUPPORT
110	bool
111	default y if SPARC64
112
113config ARCH_HIBERNATION_POSSIBLE
114	def_bool y if SPARC64
115
116config AUDIT_ARCH
117	bool
118	default y
119
120config HAVE_SETUP_PER_CPU_AREA
121	def_bool y if SPARC64
122
123config NEED_PER_CPU_EMBED_FIRST_CHUNK
124	def_bool y if SPARC64
125
126config NEED_PER_CPU_PAGE_FIRST_CHUNK
127	def_bool y if SPARC64
128
129config MMU
130	bool
131	default y
132
133config HIGHMEM
134	bool
135	default y if SPARC32
136
137config ZONE_DMA
138	bool
139	default y if SPARC32
140
141config NEED_DMA_MAP_STATE
142	def_bool y
143
144config NEED_SG_DMA_LENGTH
145	def_bool y
146
147config GENERIC_ISA_DMA
148	bool
149	default y if SPARC32
150
151config ARCH_SUPPORTS_DEBUG_PAGEALLOC
152	def_bool y if SPARC64
153
154config PGTABLE_LEVELS
155	default 4 if 64BIT
156	default 3
157
158config ARCH_SUPPORTS_UPROBES
159	def_bool y if SPARC64
160
161source "init/Kconfig"
162
163source "kernel/Kconfig.freezer"
164
165menu "Processor type and features"
166
167config SMP
168	bool "Symmetric multi-processing support"
169	---help---
170	  This enables support for systems with more than one CPU. If you have
171	  a system with only one CPU, say N. If you have a system with more
172	  than one CPU, say Y.
173
174	  If you say N here, the kernel will run on uni- and multiprocessor
175	  machines, but will use only one CPU of a multiprocessor machine. If
176	  you say Y here, the kernel will run on many, but not all,
177	  uniprocessor machines. On a uniprocessor machine, the kernel
178	  will run faster if you say N here.
179
180	  People using multiprocessor machines who say Y here should also say
181	  Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
182	  Management" code will be disabled if you say Y here.
183
184	  See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
185	  available at <http://www.tldp.org/docs.html#howto>.
186
187	  If you don't know what to do here, say N.
188
189config NR_CPUS
190	int "Maximum number of CPUs"
191	depends on SMP
192	range 2 32 if SPARC32
193	range 2 1024 if SPARC64
194	default 32 if SPARC32
195	default 64 if SPARC64
196
197source kernel/Kconfig.hz
198
199config RWSEM_GENERIC_SPINLOCK
200	bool
201	default y if SPARC32
202
203config RWSEM_XCHGADD_ALGORITHM
204	bool
205	default y if SPARC64
206
207config GENERIC_HWEIGHT
208	bool
209	default y
210
211config GENERIC_CALIBRATE_DELAY
212	bool
213	default y
214
215config ARCH_MAY_HAVE_PC_FDC
216	bool
217	default y
218
219config EMULATED_CMPXCHG
220	bool
221	default y if SPARC32
222	help
223	  Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
224	  is emulated, and therefore it is not completely atomic.
225
226# Makefile helpers
227config SPARC32_SMP
228	bool
229	default y
230	depends on SPARC32 && SMP
231
232config SPARC64_SMP
233	bool
234	default y
235	depends on SPARC64 && SMP
236
237config EARLYFB
238	bool "Support for early boot text console"
239	default y
240	depends on SPARC64
241	help
242	  Say Y here to enable a faster early framebuffer boot console.
243
244config SECCOMP
245	bool "Enable seccomp to safely compute untrusted bytecode"
246	depends on SPARC64 && PROC_FS
247	default y
248	help
249	  This kernel feature is useful for number crunching applications
250	  that may need to compute untrusted bytecode during their
251	  execution. By using pipes or other transports made available to
252	  the process as file descriptors supporting the read/write
253	  syscalls, it's possible to isolate those applications in
254	  their own address space using seccomp. Once seccomp is
255	  enabled via /proc/<pid>/seccomp, it cannot be disabled
256	  and the task is only allowed to execute a few safe syscalls
257	  defined by each seccomp mode.
258
259	  If unsure, say Y. Only embedded should say N here.
260
261config HOTPLUG_CPU
262	bool "Support for hot-pluggable CPUs"
263	depends on SPARC64 && SMP
264	help
265	  Say Y here to experiment with turning CPUs off and on.  CPUs
266	  can be controlled through /sys/devices/system/cpu/cpu#.
267	  Say N if you want to disable CPU hotplug.
268
269if SPARC64
270source "drivers/cpufreq/Kconfig"
271endif
272
273config US3_MC
274	tristate "UltraSPARC-III Memory Controller driver"
275	depends on SPARC64
276	default y
277	help
278	  This adds a driver for the UltraSPARC-III memory controller.
279	  Loading this driver allows exact mnemonic strings to be
280	  printed in the event of a memory error, so that the faulty DIMM
281	  on the motherboard can be matched to the error.
282
283	  If in doubt, say Y, as this information can be very useful.
284
285# Global things across all Sun machines.
286config GENERIC_LOCKBREAK
287	bool
288	default y
289	depends on SPARC64 && SMP && PREEMPT
290
291config NUMA
292	bool "NUMA support"
293	depends on SPARC64 && SMP
294
295config NODES_SHIFT
296	int
297	default "4"
298	depends on NEED_MULTIPLE_NODES
299
300# Some NUMA nodes have memory ranges that span
301# other nodes.  Even though a pfn is valid and
302# between a node's start and end pfns, it may not
303# reside on that node.  See memmap_init_zone()
304# for details.
305config NODES_SPAN_OTHER_NODES
306	def_bool y
307	depends on NEED_MULTIPLE_NODES
308
309config ARCH_SELECT_MEMORY_MODEL
310	def_bool y if SPARC64
311
312config ARCH_SPARSEMEM_ENABLE
313	def_bool y if SPARC64
314	select SPARSEMEM_VMEMMAP_ENABLE
315
316config ARCH_SPARSEMEM_DEFAULT
317	def_bool y if SPARC64
318
319config FORCE_MAX_ZONEORDER
320	int "Maximum zone order"
321	default "13"
322	help
323	  The kernel memory allocator divides physically contiguous memory
324	  blocks into "zones", where each zone is a power of two number of
325	  pages.  This option selects the largest power of two that the kernel
326	  keeps in the memory allocator.  If you need to allocate very large
327	  blocks of physically contiguous memory, then you may need to
328	  increase this value.
329
330	  This config option is actually maximum order plus one. For example,
331	  a value of 13 means that the largest free memory block is 2^12 pages.
332
333source "mm/Kconfig"
334
335if SPARC64
336source "kernel/power/Kconfig"
337endif
338
339config SCHED_SMT
340	bool "SMT (Hyperthreading) scheduler support"
341	depends on SPARC64 && SMP
342	default y
343	help
344	  SMT scheduler support improves the CPU scheduler's decision making
345	  when dealing with SPARC cpus at a cost of slightly increased overhead
346	  in some places. If unsure say N here.
347
348config SCHED_MC
349	bool "Multi-core scheduler support"
350	depends on SPARC64 && SMP
351	default y
352	help
353	  Multi-core scheduler support improves the CPU scheduler's decision
354	  making when dealing with multi-core CPU chips at a cost of slightly
355	  increased overhead in some places. If unsure say N here.
356
357source "kernel/Kconfig.preempt"
358
359config CMDLINE_BOOL
360	bool "Default bootloader kernel arguments"
361	depends on SPARC64
362
363config CMDLINE
364	string "Initial kernel command string"
365	depends on CMDLINE_BOOL
366	default "console=ttyS0,9600 root=/dev/sda1"
367	help
368	  Say Y here if you want to be able to pass default arguments to
369	  the kernel. This will be overridden by the bootloader, if you
370	  use one (such as SILO). This is most useful if you want to boot
371	  a kernel from TFTP, and want default options to be available
372	  with having them passed on the command line.
373
374	  NOTE: This option WILL override the PROM bootargs setting!
375
376config SUN_PM
377	bool
378	default y if SPARC32
379	help
380	  Enable power management and CPU standby features on supported
381	  SPARC platforms.
382
383config SPARC_LED
384	tristate "Sun4m LED driver"
385	depends on SPARC32
386	help
387	  This driver toggles the front-panel LED on sun4m systems
388	  in a user-specifiable manner.  Its state can be probed
389	  by reading /proc/led and its blinking mode can be changed
390	  via writes to /proc/led
391
392config SERIAL_CONSOLE
393	bool
394	depends on SPARC32
395	default y
396	---help---
397	  If you say Y here, it will be possible to use a serial port as the
398	  system console (the system console is the device which receives all
399	  kernel messages and warnings and which allows logins in single user
400	  mode). This could be useful if some terminal or printer is connected
401	  to that serial port.
402
403	  Even if you say Y here, the currently visible virtual console
404	  (/dev/tty0) will still be used as the system console by default, but
405	  you can alter that using a kernel command line option such as
406	  "console=ttyS1". (Try "man bootparam" or see the documentation of
407	  your boot loader (silo) about how to pass options to the kernel at
408	  boot time.)
409
410	  If you don't have a graphics card installed and you say Y here, the
411	  kernel will automatically use the first serial line, /dev/ttyS0, as
412	  system console.
413
414	  If unsure, say N.
415
416config SPARC_LEON
417	bool "Sparc Leon processor family"
418	depends on SPARC32
419	select USB_EHCI_BIG_ENDIAN_MMIO
420	select USB_EHCI_BIG_ENDIAN_DESC
421	---help---
422	  If you say Y here if you are running on a SPARC-LEON processor.
423	  The LEON processor is a synthesizable VHDL model of the
424	  SPARC-v8 standard. LEON is  part of the GRLIB collection of
425	  IP cores that are distributed under GPL. GRLIB can be downloaded
426	  from www.gaisler.com. You can download a sparc-linux cross-compilation
427	  toolchain at www.gaisler.com.
428
429if SPARC_LEON
430menu "U-Boot options"
431
432config UBOOT_LOAD_ADDR
433	hex "uImage Load Address"
434	default 0x40004000
435	---help---
436	 U-Boot kernel load address, the address in physical address space
437	 where u-boot will place the Linux kernel before booting it.
438	 This address is normally the base address of main memory + 0x4000.
439
440config UBOOT_FLASH_ADDR
441	hex "uImage.o Load Address"
442	default 0x00080000
443	---help---
444	 Optional setting only affecting the uImage.o ELF-image used to
445	 download the uImage file to the target using a ELF-loader other than
446	 U-Boot. It may for example be used to download an uImage to FLASH with
447	 the GRMON utility before even starting u-boot.
448
449config UBOOT_ENTRY_ADDR
450	hex "uImage Entry Address"
451	default 0xf0004000
452	---help---
453	 Do not change this unless you know what you're doing. This is
454	 hardcoded by the SPARC32 and LEON port.
455
456	 This is the virtual address u-boot jumps to when booting the Linux
457	 Kernel.
458
459endmenu
460endif
461
462endmenu
463
464menu "Bus options (PCI etc.)"
465config SBUS
466	bool
467	default y
468
469config SBUSCHAR
470	bool
471	default y
472
473config SUN_LDOMS
474	bool "Sun Logical Domains support"
475	depends on SPARC64
476	help
477	  Say Y here is you want to support virtual devices via
478	  Logical Domains.
479
480config PCI
481	bool "Support for PCI and PS/2 keyboard/mouse"
482	help
483	  Find out whether your system includes a PCI bus. PCI is the name of
484	  a bus system, i.e. the way the CPU talks to the other stuff inside
485	  your box.  If you say Y here, the kernel will include drivers and
486	  infrastructure code to support PCI bus devices.
487
488	  CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
489	  CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
490	  All of these platforms are extremely obscure, so say N if unsure.
491
492config PCI_DOMAINS
493	def_bool PCI if SPARC64
494
495config PCI_SYSCALL
496	def_bool PCI
497
498config PCIC_PCI
499	bool
500	depends on PCI && SPARC32 && !SPARC_LEON
501	default y
502
503config LEON_PCI
504	bool
505	depends on PCI && SPARC_LEON
506	default y
507
508config SPARC_GRPCI1
509	bool "GRPCI Host Bridge Support"
510	depends on LEON_PCI
511	default y
512	help
513	  Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
514	  PCI host controller is typically found in GRLIB SPARC32/LEON
515	  systems. The driver has one property (all_pci_errors) controlled
516	  from the bootloader that makes the GRPCI to generate interrupts
517	  on detected PCI Parity and System errors.
518
519config SPARC_GRPCI2
520	bool "GRPCI2 Host Bridge Support"
521	depends on LEON_PCI
522	default y
523	help
524	  Say Y here to include the GRPCI2 Host Bridge Driver.
525
526source "drivers/pci/Kconfig"
527
528source "drivers/pcmcia/Kconfig"
529
530config SUN_OPENPROMFS
531	tristate "Openprom tree appears in /proc/openprom"
532	help
533	  If you say Y, the OpenPROM device tree will be available as a
534	  virtual file system, which you can mount to /proc/openprom by "mount
535	  -t openpromfs none /proc/openprom".
536
537	  To compile the /proc/openprom support as a module, choose M here: the
538	  module will be called openpromfs.
539
540	  Only choose N if you know in advance that you will not need to modify
541	  OpenPROM settings on the running system.
542
543# Makefile helpers
544config SPARC64_PCI
545	bool
546	default y
547	depends on SPARC64 && PCI
548
549config SPARC64_PCI_MSI
550	bool
551	default y
552	depends on SPARC64_PCI && PCI_MSI
553
554endmenu
555
556menu "Executable file formats"
557
558source "fs/Kconfig.binfmt"
559
560config COMPAT
561	bool
562	depends on SPARC64
563	default y
564	select COMPAT_BINFMT_ELF
565	select HAVE_UID16
566	select ARCH_WANT_OLD_COMPAT_IPC
567	select COMPAT_OLD_SIGACTION
568
569config SYSVIPC_COMPAT
570	bool
571	depends on COMPAT && SYSVIPC
572	default y
573
574config KEYS_COMPAT
575	def_bool y if COMPAT && KEYS
576
577endmenu
578
579source "net/Kconfig"
580
581source "drivers/Kconfig"
582
583source "drivers/sbus/char/Kconfig"
584
585source "fs/Kconfig"
586
587source "arch/sparc/Kconfig.debug"
588
589source "security/Kconfig"
590
591source "crypto/Kconfig"
592
593source "lib/Kconfig"
594