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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 HAVE_EXIT_THREAD
 24         select SYSCTL_EXCEPTION_TRACE
 25         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 26         select RTC_CLASS
 27         select RTC_DRV_M48T59
 28         select RTC_SYSTOHC
 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_CBPF_JIT
 36         select HAVE_DEBUG_BUGVERBOSE
 37         select GENERIC_SMP_IDLE_THREAD
 38         select GENERIC_CLOCKEVENTS
 39         select GENERIC_STRNCPY_FROM_USER
 40         select GENERIC_STRNLEN_USER
 41         select MODULES_USE_ELF_RELA
 42         select ODD_RT_SIGACTION
 43         select OLD_SIGSUSPEND
 44         select ARCH_HAS_SG_CHAIN
 45         select CPU_NO_EFFICIENT_FFS
 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         select HAVE_NMI
 84 
 85 config ARCH_DEFCONFIG
 86         string
 87         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
 88         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
 89 
 90 config ARCH_PROC_KCORE_TEXT
 91         def_bool y
 92 
 93 config IOMMU_HELPER
 94         bool
 95         default y if SPARC64
 96 
 97 config STACKTRACE_SUPPORT
 98         bool
 99         default y if SPARC64
100 
101 config LOCKDEP_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 config PGTABLE_LEVELS
147         default 4 if 64BIT
148         default 3
149 
150 source "init/Kconfig"
151 
152 source "kernel/Kconfig.freezer"
153 
154 menu "Processor type and features"
155 
156 config SMP
157         bool "Symmetric multi-processing support"
158         ---help---
159           This enables support for systems with more than one CPU. If you have
160           a system with only one CPU, say N. If you have a system with more
161           than one CPU, say Y.
162 
163           If you say N here, the kernel will run on uni- and multiprocessor
164           machines, but will use only one CPU of a multiprocessor machine. If
165           you say Y here, the kernel will run on many, but not all,
166           uniprocessor machines. On a uniprocessor machine, the kernel
167           will run faster if you say N here.
168 
169           People using multiprocessor machines who say Y here should also say
170           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
171           Management" code will be disabled if you say Y here.
172 
173           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
174           available at <http://www.tldp.org/docs.html#howto>.
175 
176           If you don't know what to do here, say N.
177 
178 config NR_CPUS
179         int "Maximum number of CPUs"
180         depends on SMP
181         range 2 32 if SPARC32
182         range 2 1024 if SPARC64
183         default 32 if SPARC32
184         default 64 if SPARC64
185 
186 source kernel/Kconfig.hz
187 
188 config RWSEM_GENERIC_SPINLOCK
189         bool
190         default y if SPARC32
191 
192 config RWSEM_XCHGADD_ALGORITHM
193         bool
194         default y if SPARC64
195 
196 config GENERIC_HWEIGHT
197         bool
198         default y
199 
200 config GENERIC_CALIBRATE_DELAY
201         bool
202         default y
203 
204 config ARCH_MAY_HAVE_PC_FDC
205         bool
206         default y
207 
208 config EMULATED_CMPXCHG
209         bool
210         default y if SPARC32
211         help
212           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
213           is emulated, and therefore it is not completely atomic.
214 
215 # Makefile helpers
216 config SPARC32_SMP
217         bool
218         default y
219         depends on SPARC32 && SMP
220 
221 config SPARC64_SMP
222         bool
223         default y
224         depends on SPARC64 && SMP
225 
226 config EARLYFB
227         bool "Support for early boot text console"
228         default y
229         depends on SPARC64
230         help
231           Say Y here to enable a faster early framebuffer boot console.
232 
233 config SECCOMP
234         bool "Enable seccomp to safely compute untrusted bytecode"
235         depends on SPARC64 && PROC_FS
236         default y
237         help
238           This kernel feature is useful for number crunching applications
239           that may need to compute untrusted bytecode during their
240           execution. By using pipes or other transports made available to
241           the process as file descriptors supporting the read/write
242           syscalls, it's possible to isolate those applications in
243           their own address space using seccomp. Once seccomp is
244           enabled via /proc/<pid>/seccomp, it cannot be disabled
245           and the task is only allowed to execute a few safe syscalls
246           defined by each seccomp mode.
247 
248           If unsure, say Y. Only embedded should say N here.
249 
250 config HOTPLUG_CPU
251         bool "Support for hot-pluggable CPUs"
252         depends on SPARC64 && SMP
253         help
254           Say Y here to experiment with turning CPUs off and on.  CPUs
255           can be controlled through /sys/devices/system/cpu/cpu#.
256           Say N if you want to disable CPU hotplug.
257 
258 if SPARC64
259 source "drivers/cpufreq/Kconfig"
260 endif
261 
262 config US3_MC
263         tristate "UltraSPARC-III Memory Controller driver"
264         depends on SPARC64
265         default y
266         help
267           This adds a driver for the UltraSPARC-III memory controller.
268           Loading this driver allows exact mnemonic strings to be
269           printed in the event of a memory error, so that the faulty DIMM
270           on the motherboard can be matched to the error.
271 
272           If in doubt, say Y, as this information can be very useful.
273 
274 # Global things across all Sun machines.
275 config GENERIC_LOCKBREAK
276         bool
277         default y
278         depends on SPARC64 && SMP && PREEMPT
279 
280 config NUMA
281         bool "NUMA support"
282         depends on SPARC64 && SMP
283 
284 config NODES_SHIFT
285         int
286         default "4"
287         depends on NEED_MULTIPLE_NODES
288 
289 # Some NUMA nodes have memory ranges that span
290 # other nodes.  Even though a pfn is valid and
291 # between a node's start and end pfns, it may not
292 # reside on that node.  See memmap_init_zone()
293 # for details.
294 config NODES_SPAN_OTHER_NODES
295         def_bool y
296         depends on NEED_MULTIPLE_NODES
297 
298 config ARCH_SELECT_MEMORY_MODEL
299         def_bool y if SPARC64
300 
301 config ARCH_SPARSEMEM_ENABLE
302         def_bool y if SPARC64
303         select SPARSEMEM_VMEMMAP_ENABLE
304 
305 config ARCH_SPARSEMEM_DEFAULT
306         def_bool y if SPARC64
307 
308 source "mm/Kconfig"
309 
310 if SPARC64
311 source "kernel/power/Kconfig"
312 endif
313 
314 config SCHED_SMT
315         bool "SMT (Hyperthreading) scheduler support"
316         depends on SPARC64 && SMP
317         default y
318         help
319           SMT scheduler support improves the CPU scheduler's decision making
320           when dealing with SPARC cpus at a cost of slightly increased overhead
321           in some places. If unsure say N here.
322 
323 config SCHED_MC
324         bool "Multi-core scheduler support"
325         depends on SPARC64 && SMP
326         default y
327         help
328           Multi-core scheduler support improves the CPU scheduler's decision
329           making when dealing with multi-core CPU chips at a cost of slightly
330           increased overhead in some places. If unsure say N here.
331 
332 source "kernel/Kconfig.preempt"
333 
334 config CMDLINE_BOOL
335         bool "Default bootloader kernel arguments"
336         depends on SPARC64
337 
338 config CMDLINE
339         string "Initial kernel command string"
340         depends on CMDLINE_BOOL
341         default "console=ttyS0,9600 root=/dev/sda1"
342         help
343           Say Y here if you want to be able to pass default arguments to
344           the kernel. This will be overridden by the bootloader, if you
345           use one (such as SILO). This is most useful if you want to boot
346           a kernel from TFTP, and want default options to be available
347           with having them passed on the command line.
348 
349           NOTE: This option WILL override the PROM bootargs setting!
350 
351 config SUN_PM
352         bool
353         default y if SPARC32
354         help
355           Enable power management and CPU standby features on supported
356           SPARC platforms.
357 
358 config SPARC_LED
359         tristate "Sun4m LED driver"
360         depends on SPARC32
361         help
362           This driver toggles the front-panel LED on sun4m systems
363           in a user-specifiable manner.  Its state can be probed
364           by reading /proc/led and its blinking mode can be changed
365           via writes to /proc/led
366 
367 config SERIAL_CONSOLE
368         bool
369         depends on SPARC32
370         default y
371         ---help---
372           If you say Y here, it will be possible to use a serial port as the
373           system console (the system console is the device which receives all
374           kernel messages and warnings and which allows logins in single user
375           mode). This could be useful if some terminal or printer is connected
376           to that serial port.
377 
378           Even if you say Y here, the currently visible virtual console
379           (/dev/tty0) will still be used as the system console by default, but
380           you can alter that using a kernel command line option such as
381           "console=ttyS1". (Try "man bootparam" or see the documentation of
382           your boot loader (silo) about how to pass options to the kernel at
383           boot time.)
384 
385           If you don't have a graphics card installed and you say Y here, the
386           kernel will automatically use the first serial line, /dev/ttyS0, as
387           system console.
388 
389           If unsure, say N.
390 
391 config SPARC_LEON
392         bool "Sparc Leon processor family"
393         depends on SPARC32
394         select USB_EHCI_BIG_ENDIAN_MMIO
395         select USB_EHCI_BIG_ENDIAN_DESC
396         ---help---
397           If you say Y here if you are running on a SPARC-LEON processor.
398           The LEON processor is a synthesizable VHDL model of the
399           SPARC-v8 standard. LEON is  part of the GRLIB collection of
400           IP cores that are distributed under GPL. GRLIB can be downloaded
401           from www.gaisler.com. You can download a sparc-linux cross-compilation
402           toolchain at www.gaisler.com.
403 
404 if SPARC_LEON
405 menu "U-Boot options"
406 
407 config UBOOT_LOAD_ADDR
408         hex "uImage Load Address"
409         default 0x40004000
410         ---help---
411          U-Boot kernel load address, the address in physical address space
412          where u-boot will place the Linux kernel before booting it.
413          This address is normally the base address of main memory + 0x4000.
414 
415 config UBOOT_FLASH_ADDR
416         hex "uImage.o Load Address"
417         default 0x00080000
418         ---help---
419          Optional setting only affecting the uImage.o ELF-image used to
420          download the uImage file to the target using a ELF-loader other than
421          U-Boot. It may for example be used to download an uImage to FLASH with
422          the GRMON utility before even starting u-boot.
423 
424 config UBOOT_ENTRY_ADDR
425         hex "uImage Entry Address"
426         default 0xf0004000
427         ---help---
428          Do not change this unless you know what you're doing. This is
429          hardcoded by the SPARC32 and LEON port.
430 
431          This is the virtual address u-boot jumps to when booting the Linux
432          Kernel.
433 
434 endmenu
435 endif
436 
437 endmenu
438 
439 menu "Bus options (PCI etc.)"
440 config SBUS
441         bool
442         default y
443 
444 config SBUSCHAR
445         bool
446         default y
447 
448 config SUN_LDOMS
449         bool "Sun Logical Domains support"
450         depends on SPARC64
451         help
452           Say Y here is you want to support virtual devices via
453           Logical Domains.
454 
455 config PCI
456         bool "Support for PCI and PS/2 keyboard/mouse"
457         help
458           Find out whether your system includes a PCI bus. PCI is the name of
459           a bus system, i.e. the way the CPU talks to the other stuff inside
460           your box.  If you say Y here, the kernel will include drivers and
461           infrastructure code to support PCI bus devices.
462 
463           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
464           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
465           All of these platforms are extremely obscure, so say N if unsure.
466 
467 config PCI_DOMAINS
468         def_bool PCI if SPARC64
469 
470 config PCI_SYSCALL
471         def_bool PCI
472 
473 config PCIC_PCI
474         bool
475         depends on PCI && SPARC32 && !SPARC_LEON
476         default y
477 
478 config LEON_PCI
479         bool
480         depends on PCI && SPARC_LEON
481         default y
482 
483 config SPARC_GRPCI1
484         bool "GRPCI Host Bridge Support"
485         depends on LEON_PCI
486         default y
487         help
488           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
489           PCI host controller is typically found in GRLIB SPARC32/LEON
490           systems. The driver has one property (all_pci_errors) controlled
491           from the bootloader that makes the GRPCI to generate interrupts
492           on detected PCI Parity and System errors.
493 
494 config SPARC_GRPCI2
495         bool "GRPCI2 Host Bridge Support"
496         depends on LEON_PCI
497         default y
498         help
499           Say Y here to include the GRPCI2 Host Bridge Driver.
500 
501 source "drivers/pci/Kconfig"
502 
503 source "drivers/pcmcia/Kconfig"
504 
505 config SUN_OPENPROMFS
506         tristate "Openprom tree appears in /proc/openprom"
507         help
508           If you say Y, the OpenPROM device tree will be available as a
509           virtual file system, which you can mount to /proc/openprom by "mount
510           -t openpromfs none /proc/openprom".
511 
512           To compile the /proc/openprom support as a module, choose M here: the
513           module will be called openpromfs.
514 
515           Only choose N if you know in advance that you will not need to modify
516           OpenPROM settings on the running system.
517 
518 # Makefile helpers
519 config SPARC64_PCI
520         bool
521         default y
522         depends on SPARC64 && PCI
523 
524 config SPARC64_PCI_MSI
525         bool
526         default y
527         depends on SPARC64_PCI && PCI_MSI
528 
529 endmenu
530 
531 menu "Executable file formats"
532 
533 source "fs/Kconfig.binfmt"
534 
535 config COMPAT
536         bool
537         depends on SPARC64
538         default y
539         select COMPAT_BINFMT_ELF
540         select HAVE_UID16
541         select ARCH_WANT_OLD_COMPAT_IPC
542         select COMPAT_OLD_SIGACTION
543 
544 config SYSVIPC_COMPAT
545         bool
546         depends on COMPAT && SYSVIPC
547         default y
548 
549 config KEYS_COMPAT
550         def_bool y if COMPAT && KEYS
551 
552 endmenu
553 
554 source "net/Kconfig"
555 
556 source "drivers/Kconfig"
557 
558 source "drivers/sbus/char/Kconfig"
559 
560 source "fs/Kconfig"
561 
562 source "arch/sparc/Kconfig.debug"
563 
564 source "security/Kconfig"
565 
566 source "crypto/Kconfig"
567 
568 source "lib/Kconfig"

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