xref: /openbmc/linux/arch/sparc/Kconfig (revision b34e08d5)
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
46config SPARC32
47	def_bool !64BIT
48	select GENERIC_ATOMIC64
49	select CLZ_TAB
50	select HAVE_UID16
51	select OLD_SIGACTION
52
53config SPARC64
54	def_bool 64BIT
55	select HAVE_FUNCTION_TRACER
56	select HAVE_FUNCTION_GRAPH_TRACER
57	select HAVE_FUNCTION_GRAPH_FP_TEST
58	select HAVE_FUNCTION_TRACE_MCOUNT_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 RTC_DRV_CMOS
71	select RTC_DRV_BQ4802
72	select RTC_DRV_SUN4V
73	select RTC_DRV_STARFIRE
74	select HAVE_PERF_EVENTS
75	select PERF_USE_VMALLOC
76	select IRQ_PREFLOW_FASTEOI
77	select ARCH_HAVE_NMI_SAFE_CMPXCHG
78	select HAVE_C_RECORDMCOUNT
79	select NO_BOOTMEM
80	select HAVE_ARCH_AUDITSYSCALL
81
82config ARCH_DEFCONFIG
83	string
84	default "arch/sparc/configs/sparc32_defconfig" if SPARC32
85	default "arch/sparc/configs/sparc64_defconfig" if SPARC64
86
87config IOMMU_HELPER
88	bool
89	default y if SPARC64
90
91config STACKTRACE_SUPPORT
92	bool
93	default y if SPARC64
94
95config LOCKDEP_SUPPORT
96	bool
97	default y if SPARC64
98
99config HAVE_LATENCYTOP_SUPPORT
100	bool
101	default y if SPARC64
102
103config ARCH_HIBERNATION_POSSIBLE
104	def_bool y if SPARC64
105
106config AUDIT_ARCH
107	bool
108	default y
109
110config HAVE_SETUP_PER_CPU_AREA
111	def_bool y if SPARC64
112
113config NEED_PER_CPU_EMBED_FIRST_CHUNK
114	def_bool y if SPARC64
115
116config NEED_PER_CPU_PAGE_FIRST_CHUNK
117	def_bool y if SPARC64
118
119config MMU
120	bool
121	default y
122
123config HIGHMEM
124	bool
125	default y if SPARC32
126
127config ZONE_DMA
128	bool
129	default y if SPARC32
130
131config NEED_DMA_MAP_STATE
132	def_bool y
133
134config NEED_SG_DMA_LENGTH
135	def_bool y
136
137config GENERIC_ISA_DMA
138	bool
139	default y if SPARC32
140
141config ARCH_SUPPORTS_DEBUG_PAGEALLOC
142	def_bool y if SPARC64
143
144source "init/Kconfig"
145
146source "kernel/Kconfig.freezer"
147
148menu "Processor type and features"
149
150config SMP
151	bool "Symmetric multi-processing support"
152	---help---
153	  This enables support for systems with more than one CPU. If you have
154	  a system with only one CPU, say N. If you have a system with more
155	  than one CPU, say Y.
156
157	  If you say N here, the kernel will run on uni- and multiprocessor
158	  machines, but will use only one CPU of a multiprocessor machine. If
159	  you say Y here, the kernel will run on many, but not all,
160	  uniprocessor machines. On a uniprocessor machine, the kernel
161	  will run faster if you say N here.
162
163	  People using multiprocessor machines who say Y here should also say
164	  Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
165	  Management" code will be disabled if you say Y here.
166
167	  See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
168	  available at <http://www.tldp.org/docs.html#howto>.
169
170	  If you don't know what to do here, say N.
171
172config NR_CPUS
173	int "Maximum number of CPUs"
174	depends on SMP
175	range 2 32 if SPARC32
176	range 2 1024 if SPARC64
177	default 32 if SPARC32
178	default 64 if SPARC64
179
180source kernel/Kconfig.hz
181
182config RWSEM_GENERIC_SPINLOCK
183	bool
184	default y if SPARC32
185
186config RWSEM_XCHGADD_ALGORITHM
187	bool
188	default y if SPARC64
189
190config GENERIC_HWEIGHT
191	bool
192	default y
193
194config GENERIC_CALIBRATE_DELAY
195	bool
196	default y
197
198config ARCH_MAY_HAVE_PC_FDC
199	bool
200	default y
201
202config EMULATED_CMPXCHG
203	bool
204	default y if SPARC32
205	help
206	  Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
207	  is emulated, and therefore it is not completely atomic.
208
209# Makefile helpers
210config SPARC32_SMP
211	bool
212	default y
213	depends on SPARC32 && SMP
214
215config SPARC64_SMP
216	bool
217	default y
218	depends on SPARC64 && SMP
219
220config EARLYFB
221	bool "Support for early boot text console"
222	default y
223	depends on SPARC64
224	help
225	  Say Y here to enable a faster early framebuffer boot console.
226
227config SECCOMP
228	bool "Enable seccomp to safely compute untrusted bytecode"
229	depends on SPARC64 && PROC_FS
230	default y
231	help
232	  This kernel feature is useful for number crunching applications
233	  that may need to compute untrusted bytecode during their
234	  execution. By using pipes or other transports made available to
235	  the process as file descriptors supporting the read/write
236	  syscalls, it's possible to isolate those applications in
237	  their own address space using seccomp. Once seccomp is
238	  enabled via /proc/<pid>/seccomp, it cannot be disabled
239	  and the task is only allowed to execute a few safe syscalls
240	  defined by each seccomp mode.
241
242	  If unsure, say Y. Only embedded should say N here.
243
244config HOTPLUG_CPU
245	bool "Support for hot-pluggable CPUs"
246	depends on SPARC64 && SMP
247	help
248	  Say Y here to experiment with turning CPUs off and on.  CPUs
249	  can be controlled through /sys/devices/system/cpu/cpu#.
250	  Say N if you want to disable CPU hotplug.
251
252if SPARC64
253source "drivers/cpufreq/Kconfig"
254endif
255
256config US3_MC
257	tristate "UltraSPARC-III Memory Controller driver"
258	depends on SPARC64
259	default y
260	help
261	  This adds a driver for the UltraSPARC-III memory controller.
262	  Loading this driver allows exact mnemonic strings to be
263	  printed in the event of a memory error, so that the faulty DIMM
264	  on the motherboard can be matched to the error.
265
266	  If in doubt, say Y, as this information can be very useful.
267
268# Global things across all Sun machines.
269config GENERIC_LOCKBREAK
270	bool
271	default y
272	depends on SPARC64 && SMP && PREEMPT
273
274config NUMA
275	bool "NUMA support"
276	depends on SPARC64 && SMP
277
278config NODES_SHIFT
279	int
280	default "4"
281	depends on NEED_MULTIPLE_NODES
282
283# Some NUMA nodes have memory ranges that span
284# other nodes.  Even though a pfn is valid and
285# between a node's start and end pfns, it may not
286# reside on that node.  See memmap_init_zone()
287# for details.
288config NODES_SPAN_OTHER_NODES
289	def_bool y
290	depends on NEED_MULTIPLE_NODES
291
292config ARCH_SELECT_MEMORY_MODEL
293	def_bool y if SPARC64
294
295config ARCH_SPARSEMEM_ENABLE
296	def_bool y if SPARC64
297	select SPARSEMEM_VMEMMAP_ENABLE
298
299config ARCH_SPARSEMEM_DEFAULT
300	def_bool y if SPARC64
301
302source "mm/Kconfig"
303
304if SPARC64
305source "kernel/power/Kconfig"
306endif
307
308config SCHED_SMT
309	bool "SMT (Hyperthreading) scheduler support"
310	depends on SPARC64 && SMP
311	default y
312	help
313	  SMT scheduler support improves the CPU scheduler's decision making
314	  when dealing with SPARC cpus at a cost of slightly increased overhead
315	  in some places. If unsure say N here.
316
317config SCHED_MC
318	bool "Multi-core scheduler support"
319	depends on SPARC64 && SMP
320	default y
321	help
322	  Multi-core scheduler support improves the CPU scheduler's decision
323	  making when dealing with multi-core CPU chips at a cost of slightly
324	  increased overhead in some places. If unsure say N here.
325
326source "kernel/Kconfig.preempt"
327
328config CMDLINE_BOOL
329	bool "Default bootloader kernel arguments"
330	depends on SPARC64
331
332config CMDLINE
333	string "Initial kernel command string"
334	depends on CMDLINE_BOOL
335	default "console=ttyS0,9600 root=/dev/sda1"
336	help
337	  Say Y here if you want to be able to pass default arguments to
338	  the kernel. This will be overridden by the bootloader, if you
339	  use one (such as SILO). This is most useful if you want to boot
340	  a kernel from TFTP, and want default options to be available
341	  with having them passed on the command line.
342
343	  NOTE: This option WILL override the PROM bootargs setting!
344
345config SUN_PM
346	bool
347	default y if SPARC32
348	help
349	  Enable power management and CPU standby features on supported
350	  SPARC platforms.
351
352config SPARC_LED
353	tristate "Sun4m LED driver"
354	depends on SPARC32
355	help
356	  This driver toggles the front-panel LED on sun4m systems
357	  in a user-specifiable manner.  Its state can be probed
358	  by reading /proc/led and its blinking mode can be changed
359	  via writes to /proc/led
360
361config SERIAL_CONSOLE
362	bool
363	depends on SPARC32
364	default y
365	---help---
366	  If you say Y here, it will be possible to use a serial port as the
367	  system console (the system console is the device which receives all
368	  kernel messages and warnings and which allows logins in single user
369	  mode). This could be useful if some terminal or printer is connected
370	  to that serial port.
371
372	  Even if you say Y here, the currently visible virtual console
373	  (/dev/tty0) will still be used as the system console by default, but
374	  you can alter that using a kernel command line option such as
375	  "console=ttyS1". (Try "man bootparam" or see the documentation of
376	  your boot loader (silo) about how to pass options to the kernel at
377	  boot time.)
378
379	  If you don't have a graphics card installed and you say Y here, the
380	  kernel will automatically use the first serial line, /dev/ttyS0, as
381	  system console.
382
383	  If unsure, say N.
384
385config SPARC_LEON
386	bool "Sparc Leon processor family"
387	depends on SPARC32
388	select USB_EHCI_BIG_ENDIAN_MMIO
389	select USB_EHCI_BIG_ENDIAN_DESC
390	---help---
391	  If you say Y here if you are running on a SPARC-LEON processor.
392	  The LEON processor is a synthesizable VHDL model of the
393	  SPARC-v8 standard. LEON is  part of the GRLIB collection of
394	  IP cores that are distributed under GPL. GRLIB can be downloaded
395	  from www.gaisler.com. You can download a sparc-linux cross-compilation
396	  toolchain at www.gaisler.com.
397
398if SPARC_LEON
399menu "U-Boot options"
400
401config UBOOT_LOAD_ADDR
402	hex "uImage Load Address"
403	default 0x40004000
404	---help---
405	 U-Boot kernel load address, the address in physical address space
406	 where u-boot will place the Linux kernel before booting it.
407	 This address is normally the base address of main memory + 0x4000.
408
409config UBOOT_FLASH_ADDR
410	hex "uImage.o Load Address"
411	default 0x00080000
412	---help---
413	 Optional setting only affecting the uImage.o ELF-image used to
414	 download the uImage file to the target using a ELF-loader other than
415	 U-Boot. It may for example be used to download an uImage to FLASH with
416	 the GRMON utility before even starting u-boot.
417
418config UBOOT_ENTRY_ADDR
419	hex "uImage Entry Address"
420	default 0xf0004000
421	---help---
422	 Do not change this unless you know what you're doing. This is
423	 hardcoded by the SPARC32 and LEON port.
424
425	 This is the virtual address u-boot jumps to when booting the Linux
426	 Kernel.
427
428endmenu
429endif
430
431endmenu
432
433menu "Bus options (PCI etc.)"
434config SBUS
435	bool
436	default y
437
438config SBUSCHAR
439	bool
440	default y
441
442config SUN_LDOMS
443	bool "Sun Logical Domains support"
444	depends on SPARC64
445	help
446	  Say Y here is you want to support virtual devices via
447	  Logical Domains.
448
449config PCI
450	bool "Support for PCI and PS/2 keyboard/mouse"
451	help
452	  Find out whether your system includes a PCI bus. PCI is the name of
453	  a bus system, i.e. the way the CPU talks to the other stuff inside
454	  your box.  If you say Y here, the kernel will include drivers and
455	  infrastructure code to support PCI bus devices.
456
457	  CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
458	  CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
459	  All of these platforms are extremely obscure, so say N if unsure.
460
461config PCI_DOMAINS
462	def_bool PCI if SPARC64
463
464config PCI_SYSCALL
465	def_bool PCI
466
467config PCIC_PCI
468	bool
469	depends on PCI && SPARC32 && !SPARC_LEON
470	default y
471
472config LEON_PCI
473	bool
474	depends on PCI && SPARC_LEON
475	default y
476
477config SPARC_GRPCI1
478	bool "GRPCI Host Bridge Support"
479	depends on LEON_PCI
480	default y
481	help
482	  Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
483	  PCI host controller is typically found in GRLIB SPARC32/LEON
484	  systems. The driver has one property (all_pci_errors) controlled
485	  from the bootloader that makes the GRPCI to generate interrupts
486	  on detected PCI Parity and System errors.
487
488config SPARC_GRPCI2
489	bool "GRPCI2 Host Bridge Support"
490	depends on LEON_PCI
491	default y
492	help
493	  Say Y here to include the GRPCI2 Host Bridge Driver.
494
495source "drivers/pci/Kconfig"
496
497source "drivers/pcmcia/Kconfig"
498
499config SUN_OPENPROMFS
500	tristate "Openprom tree appears in /proc/openprom"
501	help
502	  If you say Y, the OpenPROM device tree will be available as a
503	  virtual file system, which you can mount to /proc/openprom by "mount
504	  -t openpromfs none /proc/openprom".
505
506	  To compile the /proc/openprom support as a module, choose M here: the
507	  module will be called openpromfs.
508
509	  Only choose N if you know in advance that you will not need to modify
510	  OpenPROM settings on the running system.
511
512# Makefile helpers
513config SPARC64_PCI
514	bool
515	default y
516	depends on SPARC64 && PCI
517
518config SPARC64_PCI_MSI
519	bool
520	default y
521	depends on SPARC64_PCI && PCI_MSI
522
523endmenu
524
525menu "Executable file formats"
526
527source "fs/Kconfig.binfmt"
528
529config COMPAT
530	bool
531	depends on SPARC64
532	default y
533	select COMPAT_BINFMT_ELF
534	select HAVE_UID16
535	select ARCH_WANT_OLD_COMPAT_IPC
536	select COMPAT_OLD_SIGACTION
537
538config SYSVIPC_COMPAT
539	bool
540	depends on COMPAT && SYSVIPC
541	default y
542
543config KEYS_COMPAT
544	def_bool y if COMPAT && KEYS
545
546endmenu
547
548source "net/Kconfig"
549
550source "drivers/Kconfig"
551
552source "drivers/sbus/char/Kconfig"
553
554source "fs/Kconfig"
555
556source "arch/sparc/Kconfig.debug"
557
558source "security/Kconfig"
559
560source "crypto/Kconfig"
561
562source "lib/Kconfig"
563