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Linux/arch/sparc/Kconfig

  1 config 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 
 12 config 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 
 47 config SPARC32
 48         def_bool !64BIT
 49         select GENERIC_ATOMIC64
 50         select CLZ_TAB
 51         select HAVE_UID16
 52         select OLD_SIGACTION
 53 
 54 config 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 
 84 config ARCH_DEFCONFIG
 85         string
 86         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
 87         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
 88 
 89 config IOMMU_HELPER
 90         bool
 91         default y if SPARC64
 92 
 93 config STACKTRACE_SUPPORT
 94         bool
 95         default y if SPARC64
 96 
 97 config LOCKDEP_SUPPORT
 98         bool
 99         default y if SPARC64
100 
101 config HAVE_LATENCYTOP_SUPPORT
102         bool
103         default y if SPARC64
104 
105 config ARCH_HIBERNATION_POSSIBLE
106         def_bool y if SPARC64
107 
108 config AUDIT_ARCH
109         bool
110         default y
111 
112 config HAVE_SETUP_PER_CPU_AREA
113         def_bool y if SPARC64
114 
115 config NEED_PER_CPU_EMBED_FIRST_CHUNK
116         def_bool y if SPARC64
117 
118 config NEED_PER_CPU_PAGE_FIRST_CHUNK
119         def_bool y if SPARC64
120 
121 config MMU
122         bool
123         default y
124 
125 config HIGHMEM
126         bool
127         default y if SPARC32
128 
129 config ZONE_DMA
130         bool
131         default y if SPARC32
132 
133 config NEED_DMA_MAP_STATE
134         def_bool y
135 
136 config NEED_SG_DMA_LENGTH
137         def_bool y
138 
139 config GENERIC_ISA_DMA
140         bool
141         default y if SPARC32
142 
143 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
144         def_bool y if SPARC64
145 
146 source "init/Kconfig"
147 
148 source "kernel/Kconfig.freezer"
149 
150 menu "Processor type and features"
151 
152 config 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#howto>.
171 
172           If you don't know what to do here, say N.
173 
174 config 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 
182 source kernel/Kconfig.hz
183 
184 config RWSEM_GENERIC_SPINLOCK
185         bool
186         default y if SPARC32
187 
188 config RWSEM_XCHGADD_ALGORITHM
189         bool
190         default y if SPARC64
191 
192 config GENERIC_HWEIGHT
193         bool
194         default y
195 
196 config GENERIC_CALIBRATE_DELAY
197         bool
198         default y
199 
200 config ARCH_MAY_HAVE_PC_FDC
201         bool
202         default y
203 
204 config 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
212 config SPARC32_SMP
213         bool
214         default y
215         depends on SPARC32 && SMP
216 
217 config SPARC64_SMP
218         bool
219         default y
220         depends on SPARC64 && SMP
221 
222 config 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 
229 config 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 
246 config 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 
254 if SPARC64
255 source "drivers/cpufreq/Kconfig"
256 endif
257 
258 config 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 # Global things across all Sun machines.
271 config GENERIC_LOCKBREAK
272         bool
273         default y
274         depends on SPARC64 && SMP && PREEMPT
275 
276 config NUMA
277         bool "NUMA support"
278         depends on SPARC64 && SMP
279 
280 config NODES_SHIFT
281         int
282         default "4"
283         depends on NEED_MULTIPLE_NODES
284 
285 # Some NUMA nodes have memory ranges that span
286 # other nodes.  Even though a pfn is valid and
287 # between a node's start and end pfns, it may not
288 # reside on that node.  See memmap_init_zone()
289 # for details.
290 config NODES_SPAN_OTHER_NODES
291         def_bool y
292         depends on NEED_MULTIPLE_NODES
293 
294 config ARCH_SELECT_MEMORY_MODEL
295         def_bool y if SPARC64
296 
297 config ARCH_SPARSEMEM_ENABLE
298         def_bool y if SPARC64
299         select SPARSEMEM_VMEMMAP_ENABLE
300 
301 config ARCH_SPARSEMEM_DEFAULT
302         def_bool y if SPARC64
303 
304 source "mm/Kconfig"
305 
306 if SPARC64
307 source "kernel/power/Kconfig"
308 endif
309 
310 config 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 
319 config 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 
328 source "kernel/Kconfig.preempt"
329 
330 config CMDLINE_BOOL
331         bool "Default bootloader kernel arguments"
332         depends on SPARC64
333 
334 config 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 
347 config 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 
354 config 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 
363 config 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 
387 config 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 
400 if SPARC_LEON
401 menu "U-Boot options"
402 
403 config 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 
411 config 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 
420 config 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 
430 endmenu
431 endif
432 
433 endmenu
434 
435 menu "Bus options (PCI etc.)"
436 config SBUS
437         bool
438         default y
439 
440 config SBUSCHAR
441         bool
442         default y
443 
444 config 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 
451 config 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 
463 config PCI_DOMAINS
464         def_bool PCI if SPARC64
465 
466 config PCI_SYSCALL
467         def_bool PCI
468 
469 config PCIC_PCI
470         bool
471         depends on PCI && SPARC32 && !SPARC_LEON
472         default y
473 
474 config LEON_PCI
475         bool
476         depends on PCI && SPARC_LEON
477         default y
478 
479 config 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 
490 config 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 
497 source "drivers/pci/Kconfig"
498 
499 source "drivers/pcmcia/Kconfig"
500 
501 config 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 # Makefile helpers
515 config SPARC64_PCI
516         bool
517         default y
518         depends on SPARC64 && PCI
519 
520 config SPARC64_PCI_MSI
521         bool
522         default y
523         depends on SPARC64_PCI && PCI_MSI
524 
525 endmenu
526 
527 menu "Executable file formats"
528 
529 source "fs/Kconfig.binfmt"
530 
531 config 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 
540 config SYSVIPC_COMPAT
541         bool
542         depends on COMPAT && SYSVIPC
543         default y
544 
545 config KEYS_COMPAT
546         def_bool y if COMPAT && KEYS
547 
548 endmenu
549 
550 source "net/Kconfig"
551 
552 source "drivers/Kconfig"
553 
554 source "drivers/sbus/char/Kconfig"
555 
556 source "fs/Kconfig"
557 
558 source "arch/sparc/Kconfig.debug"
559 
560 source "security/Kconfig"
561 
562 source "crypto/Kconfig"
563 
564 source "lib/Kconfig"

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