Root/arch/sparc/Kconfig

Source at commit 0de2b2b3be81048189a32f7a3d3ba0ba9ec817b6 created 9 years 1 day ago.
By Maarten ter Huurne, MIPS: JZ4740: Fixed value for round robin constant.
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 USE_GENERIC_SMP_HELPERS if SMP
31    select GENERIC_PCI_IOMAP
32
33config SPARC32
34    def_bool !64BIT
35    select GENERIC_ATOMIC64
36    select CLZ_TAB
37
38config SPARC64
39    def_bool 64BIT
40    select ARCH_SUPPORTS_MSI
41    select HAVE_FUNCTION_TRACER
42    select HAVE_FUNCTION_GRAPH_TRACER
43    select HAVE_FUNCTION_GRAPH_FP_TEST
44    select HAVE_FUNCTION_TRACE_MCOUNT_TEST
45    select HAVE_KRETPROBES
46    select HAVE_KPROBES
47    select HAVE_RCU_TABLE_FREE if SMP
48    select HAVE_MEMBLOCK
49    select HAVE_MEMBLOCK_NODE_MAP
50    select HAVE_SYSCALL_WRAPPERS
51    select HAVE_DYNAMIC_FTRACE
52    select HAVE_FTRACE_MCOUNT_RECORD
53    select HAVE_SYSCALL_TRACEPOINTS
54    select RTC_DRV_CMOS
55    select RTC_DRV_BQ4802
56    select RTC_DRV_SUN4V
57    select RTC_DRV_STARFIRE
58    select HAVE_PERF_EVENTS
59    select PERF_USE_VMALLOC
60    select IRQ_PREFLOW_FASTEOI
61    select ARCH_HAVE_NMI_SAFE_CMPXCHG
62    select HAVE_C_RECORDMCOUNT
63
64config ARCH_DEFCONFIG
65    string
66    default "arch/sparc/configs/sparc32_defconfig" if SPARC32
67    default "arch/sparc/configs/sparc64_defconfig" if SPARC64
68
69# CONFIG_BITS can be used at source level to get 32/64 bits
70config BITS
71    int
72    default 32 if SPARC32
73    default 64 if SPARC64
74
75config ARCH_USES_GETTIMEOFFSET
76    bool
77    default y if SPARC32
78
79config GENERIC_CMOS_UPDATE
80    bool
81    default y
82
83config GENERIC_CLOCKEVENTS
84    bool
85    default y 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 AUDIT_ARCH
104    bool
105    default y
106
107config HAVE_SETUP_PER_CPU_AREA
108    def_bool y if SPARC64
109
110config NEED_PER_CPU_EMBED_FIRST_CHUNK
111    def_bool y if SPARC64
112
113config NEED_PER_CPU_PAGE_FIRST_CHUNK
114    def_bool y if SPARC64
115
116config MMU
117    bool
118    default y
119
120config HIGHMEM
121    bool
122    default y if SPARC32
123
124config ZONE_DMA
125    bool
126    default y if SPARC32
127
128config NEED_DMA_MAP_STATE
129    def_bool y
130
131config NEED_SG_DMA_LENGTH
132    def_bool y
133
134config GENERIC_ISA_DMA
135    bool
136    default y if SPARC32
137
138config GENERIC_GPIO
139    bool
140    help
141      Generic GPIO API support
142
143config ARCH_NO_VIRT_TO_BUS
144    def_bool y
145
146config ARCH_SUPPORTS_DEBUG_PAGEALLOC
147    def_bool y if SPARC64
148
149source "init/Kconfig"
150
151source "kernel/Kconfig.freezer"
152
153menu "Processor type and features"
154
155config SMP
156    bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
157    ---help---
158      This enables support for systems with more than one CPU. If you have
159      a system with only one CPU, say N. If you have a system with more
160      than one CPU, say Y.
161
162      If you say N here, the kernel will run on single and multiprocessor
163      machines, but will use only one CPU of a multiprocessor machine. If
164      you say Y here, the kernel will run on many, but not all,
165      singleprocessor machines. On a singleprocessor machine, the kernel
166      will run faster if you say N here.
167
168      People using multiprocessor machines who say Y here should also say
169      Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
170      Management" code will be disabled if you say Y here.
171
172      See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
173      available at <http://www.tldp.org/docs.html#howto>.
174
175      If you don't know what to do here, say N.
176
177config NR_CPUS
178    int "Maximum number of CPUs"
179    depends on SMP
180    range 2 32 if SPARC32
181    range 2 1024 if SPARC64
182    default 32 if SPARC32
183    default 64 if SPARC64
184
185source kernel/Kconfig.hz
186
187config RWSEM_GENERIC_SPINLOCK
188    bool
189    default y if SPARC32
190
191config RWSEM_XCHGADD_ALGORITHM
192    bool
193    default y if SPARC64
194
195config GENERIC_HWEIGHT
196    bool
197    default y if !ULTRA_HAS_POPULATION_COUNT
198
199config GENERIC_CALIBRATE_DELAY
200    bool
201    default y
202
203config ARCH_MAY_HAVE_PC_FDC
204    bool
205    default y
206
207config EMULATED_CMPXCHG
208    bool
209    default y if SPARC32
210    help
211      Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212      is emulated, and therefore it is not completely atomic.
213
214# Makefile helpers
215config SPARC32_SMP
216    bool
217    default y
218    depends on SPARC32 && SMP
219
220config SPARC64_SMP
221    bool
222    default y
223    depends on SPARC64 && SMP
224
225config EARLYFB
226    bool "Support for early boot text console"
227    default y
228    depends on SPARC64
229    help
230      Say Y here to enable a faster early framebuffer boot console.
231
232choice
233    prompt "Kernel page size" if SPARC64
234    default SPARC64_PAGE_SIZE_8KB
235
236config SPARC64_PAGE_SIZE_8KB
237    bool "8KB"
238    help
239      This lets you select the page size of the kernel.
240
241      8KB and 64KB work quite well, since SPARC ELF sections
242      provide for up to 64KB alignment.
243
244      If you don't know what to do, choose 8KB.
245
246config SPARC64_PAGE_SIZE_64KB
247    bool "64KB"
248
249endchoice
250
251config SECCOMP
252    bool "Enable seccomp to safely compute untrusted bytecode"
253    depends on SPARC64 && PROC_FS
254    default y
255    help
256      This kernel feature is useful for number crunching applications
257      that may need to compute untrusted bytecode during their
258      execution. By using pipes or other transports made available to
259      the process as file descriptors supporting the read/write
260      syscalls, it's possible to isolate those applications in
261      their own address space using seccomp. Once seccomp is
262      enabled via /proc/<pid>/seccomp, it cannot be disabled
263      and the task is only allowed to execute a few safe syscalls
264      defined by each seccomp mode.
265
266      If unsure, say Y. Only embedded should say N here.
267
268config HOTPLUG_CPU
269    bool "Support for hot-pluggable CPUs"
270    depends on SPARC64 && SMP
271    select HOTPLUG
272    help
273      Say Y here to experiment with turning CPUs off and on. CPUs
274      can be controlled through /sys/devices/system/cpu/cpu#.
275      Say N if you want to disable CPU hotplug.
276
277source "kernel/time/Kconfig"
278
279if SPARC64
280source "drivers/cpufreq/Kconfig"
281
282config US3_FREQ
283    tristate "UltraSPARC-III CPU Frequency driver"
284    depends on CPU_FREQ
285    select CPU_FREQ_TABLE
286    help
287      This adds the CPUFreq driver for UltraSPARC-III processors.
288
289      For details, take a look at <file:Documentation/cpu-freq>.
290
291      If in doubt, say N.
292
293config US2E_FREQ
294    tristate "UltraSPARC-IIe CPU Frequency driver"
295    depends on CPU_FREQ
296    select CPU_FREQ_TABLE
297    help
298      This adds the CPUFreq driver for UltraSPARC-IIe processors.
299
300      For details, take a look at <file:Documentation/cpu-freq>.
301
302      If in doubt, say N.
303
304endif
305
306config US3_MC
307    tristate "UltraSPARC-III Memory Controller driver"
308    depends on SPARC64
309    default y
310    help
311      This adds a driver for the UltraSPARC-III memory controller.
312      Loading this driver allows exact mnemonic strings to be
313      printed in the event of a memory error, so that the faulty DIMM
314      on the motherboard can be matched to the error.
315
316      If in doubt, say Y, as this information can be very useful.
317
318# Global things across all Sun machines.
319config GENERIC_LOCKBREAK
320    bool
321    default y
322    depends on SPARC64 && SMP && PREEMPT
323
324choice
325    prompt "SPARC64 Huge TLB Page Size"
326    depends on SPARC64 && HUGETLB_PAGE
327    default HUGETLB_PAGE_SIZE_4MB
328
329config HUGETLB_PAGE_SIZE_4MB
330    bool "4MB"
331
332config HUGETLB_PAGE_SIZE_512K
333    bool "512K"
334
335config HUGETLB_PAGE_SIZE_64K
336    depends on !SPARC64_PAGE_SIZE_64KB
337    bool "64K"
338
339endchoice
340
341config NUMA
342    bool "NUMA support"
343    depends on SPARC64 && SMP
344
345config NODES_SHIFT
346    int
347    default "4"
348    depends on NEED_MULTIPLE_NODES
349
350# Some NUMA nodes have memory ranges that span
351# other nodes. Even though a pfn is valid and
352# between a node's start and end pfns, it may not
353# reside on that node. See memmap_init_zone()
354# for details.
355config NODES_SPAN_OTHER_NODES
356    def_bool y
357    depends on NEED_MULTIPLE_NODES
358
359config ARCH_SELECT_MEMORY_MODEL
360    def_bool y if SPARC64
361
362config ARCH_SPARSEMEM_ENABLE
363    def_bool y if SPARC64
364    select SPARSEMEM_VMEMMAP_ENABLE
365
366config ARCH_SPARSEMEM_DEFAULT
367    def_bool y if SPARC64
368
369source "mm/Kconfig"
370
371config SCHED_SMT
372    bool "SMT (Hyperthreading) scheduler support"
373    depends on SPARC64 && SMP
374    default y
375    help
376      SMT scheduler support improves the CPU scheduler's decision making
377      when dealing with SPARC cpus at a cost of slightly increased overhead
378      in some places. If unsure say N here.
379
380config SCHED_MC
381    bool "Multi-core scheduler support"
382    depends on SPARC64 && SMP
383    default y
384    help
385      Multi-core scheduler support improves the CPU scheduler's decision
386      making when dealing with multi-core CPU chips at a cost of slightly
387      increased overhead in some places. If unsure say N here.
388
389source "kernel/Kconfig.preempt"
390
391config CMDLINE_BOOL
392    bool "Default bootloader kernel arguments"
393    depends on SPARC64
394
395config CMDLINE
396    string "Initial kernel command string"
397    depends on CMDLINE_BOOL
398    default "console=ttyS0,9600 root=/dev/sda1"
399    help
400      Say Y here if you want to be able to pass default arguments to
401      the kernel. This will be overridden by the bootloader, if you
402      use one (such as SILO). This is most useful if you want to boot
403      a kernel from TFTP, and want default options to be available
404      with having them passed on the command line.
405
406      NOTE: This option WILL override the PROM bootargs setting!
407
408config SUN_PM
409    bool
410    default y if SPARC32
411    help
412      Enable power management and CPU standby features on supported
413      SPARC platforms.
414
415config SPARC_LED
416    tristate "Sun4m LED driver"
417    depends on SPARC32
418    help
419      This driver toggles the front-panel LED on sun4m systems
420      in a user-specifiable manner. Its state can be probed
421      by reading /proc/led and its blinking mode can be changed
422      via writes to /proc/led
423
424config SERIAL_CONSOLE
425    bool
426    depends on SPARC32
427    default y
428    ---help---
429      If you say Y here, it will be possible to use a serial port as the
430      system console (the system console is the device which receives all
431      kernel messages and warnings and which allows logins in single user
432      mode). This could be useful if some terminal or printer is connected
433      to that serial port.
434
435      Even if you say Y here, the currently visible virtual console
436      (/dev/tty0) will still be used as the system console by default, but
437      you can alter that using a kernel command line option such as
438      "console=ttyS1". (Try "man bootparam" or see the documentation of
439      your boot loader (silo) about how to pass options to the kernel at
440      boot time.)
441
442      If you don't have a graphics card installed and you say Y here, the
443      kernel will automatically use the first serial line, /dev/ttyS0, as
444      system console.
445
446      If unsure, say N.
447
448config SPARC_LEON
449    bool "Sparc Leon processor family"
450    depends on SPARC32
451    ---help---
452      If you say Y here if you are running on a SPARC-LEON processor.
453      The LEON processor is a synthesizable VHDL model of the
454      SPARC-v8 standard. LEON is part of the GRLIB collection of
455      IP cores that are distributed under GPL. GRLIB can be downloaded
456      from www.gaisler.com. You can download a sparc-linux cross-compilation
457      toolchain at www.gaisler.com.
458
459if SPARC_LEON
460menu "U-Boot options"
461
462config UBOOT_LOAD_ADDR
463    hex "uImage Load Address"
464    default 0x40004000
465    ---help---
466     U-Boot kernel load address, the address in physical address space
467     where u-boot will place the Linux kernel before booting it.
468     This address is normally the base address of main memory + 0x4000.
469
470config UBOOT_FLASH_ADDR
471    hex "uImage.o Load Address"
472    default 0x00080000
473    ---help---
474     Optional setting only affecting the uImage.o ELF-image used to
475     download the uImage file to the target using a ELF-loader other than
476     U-Boot. It may for example be used to download an uImage to FLASH with
477     the GRMON utility before even starting u-boot.
478
479config UBOOT_ENTRY_ADDR
480    hex "uImage Entry Address"
481    default 0xf0004000
482    ---help---
483     Do not change this unless you know what you're doing. This is
484     hardcoded by the SPARC32 and LEON port.
485
486     This is the virtual address u-boot jumps to when booting the Linux
487     Kernel.
488
489endmenu
490endif
491
492endmenu
493
494menu "Bus options (PCI etc.)"
495config SBUS
496    bool
497    default y
498
499config SBUSCHAR
500    bool
501    default y
502
503config SUN_LDOMS
504    bool "Sun Logical Domains support"
505    depends on SPARC64
506    help
507      Say Y here is you want to support virtual devices via
508      Logical Domains.
509
510config PCI
511    bool "Support for PCI and PS/2 keyboard/mouse"
512    help
513      Find out whether your system includes a PCI bus. PCI is the name of
514      a bus system, i.e. the way the CPU talks to the other stuff inside
515      your box. If you say Y here, the kernel will include drivers and
516      infrastructure code to support PCI bus devices.
517
518      CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
519      CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
520      All of these platforms are extremely obscure, so say N if unsure.
521
522config PCI_DOMAINS
523    def_bool PCI if SPARC64
524
525config PCI_SYSCALL
526    def_bool PCI
527
528config PCIC_PCI
529    bool
530    depends on PCI && SPARC32 && !SPARC_LEON
531    default y
532
533config LEON_PCI
534    bool
535    depends on PCI && SPARC_LEON
536    default y
537
538config GRPCI2
539    bool "GRPCI2 Host Bridge Support"
540    depends on LEON_PCI
541    default y
542    help
543      Say Y here to include the GRPCI2 Host Bridge Driver.
544
545source "drivers/pci/Kconfig"
546
547source "drivers/pcmcia/Kconfig"
548
549config SUN_OPENPROMFS
550    tristate "Openprom tree appears in /proc/openprom"
551    help
552      If you say Y, the OpenPROM device tree will be available as a
553      virtual file system, which you can mount to /proc/openprom by "mount
554      -t openpromfs none /proc/openprom".
555
556      To compile the /proc/openprom support as a module, choose M here: the
557      module will be called openpromfs.
558
559      Only choose N if you know in advance that you will not need to modify
560      OpenPROM settings on the running system.
561
562# Makefile helper
563config SPARC64_PCI
564    bool
565    default y
566    depends on SPARC64 && PCI
567
568endmenu
569
570menu "Executable file formats"
571
572source "fs/Kconfig.binfmt"
573
574config COMPAT
575    bool
576    depends on SPARC64
577    default y
578    select COMPAT_BINFMT_ELF
579
580config SYSVIPC_COMPAT
581    bool
582    depends on COMPAT && SYSVIPC
583    default y
584
585endmenu
586
587source "net/Kconfig"
588
589source "drivers/Kconfig"
590
591source "drivers/sbus/char/Kconfig"
592
593source "fs/Kconfig"
594
595source "arch/sparc/Kconfig.debug"
596
597source "security/Kconfig"
598
599source "crypto/Kconfig"
600
601source "lib/Kconfig"
602

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