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

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