Kconfig 13 KB

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  1. # For a description of the syntax of this configuration file,
  2. # see Documentation/kbuild/kconfig-language.txt.
  3. #
  4. mainmenu "Linux/SPARC Kernel Configuration"
  5. config 64BIT
  6. bool "64-bit kernel" if ARCH = "sparc"
  7. default ARCH = "sparc64"
  8. help
  9. SPARC is a family of RISC microprocessors designed and marketed by
  10. Sun Microsystems, incorporated. They are very widely found in Sun
  11. workstations and clones.
  12. Say yes to build a 64-bit kernel - formerly known as sparc64
  13. Say no to build a 32-bit kernel - formerly known as sparc
  14. config SPARC
  15. bool
  16. default y
  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_PERF_EVENTS
  25. select PERF_USE_VMALLOC
  26. select HAVE_DMA_ATTRS
  27. select HAVE_DMA_API_DEBUG
  28. config SPARC32
  29. def_bool !64BIT
  30. config SPARC64
  31. def_bool 64BIT
  32. select ARCH_SUPPORTS_MSI
  33. select HAVE_FUNCTION_TRACER
  34. select HAVE_KRETPROBES
  35. select HAVE_KPROBES
  36. select HAVE_LMB
  37. select HAVE_SYSCALL_WRAPPERS
  38. select HAVE_DYNAMIC_FTRACE
  39. select HAVE_FTRACE_MCOUNT_RECORD
  40. select HAVE_SYSCALL_TRACEPOINTS
  41. select USE_GENERIC_SMP_HELPERS if SMP
  42. select RTC_DRV_CMOS
  43. select RTC_DRV_BQ4802
  44. select RTC_DRV_SUN4V
  45. select RTC_DRV_STARFIRE
  46. select HAVE_PERF_EVENTS
  47. select PERF_USE_VMALLOC
  48. config ARCH_DEFCONFIG
  49. string
  50. default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  51. default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  52. # CONFIG_BITS can be used at source level to get 32/64 bits
  53. config BITS
  54. int
  55. default 32 if SPARC32
  56. default 64 if SPARC64
  57. config GENERIC_TIME
  58. def_bool y
  59. config ARCH_USES_GETTIMEOFFSET
  60. bool
  61. default y if SPARC32
  62. config GENERIC_CMOS_UPDATE
  63. bool
  64. default y if SPARC64
  65. config GENERIC_CLOCKEVENTS
  66. bool
  67. default y if SPARC64
  68. config IOMMU_HELPER
  69. bool
  70. default y if SPARC64
  71. config QUICKLIST
  72. bool
  73. default y if SPARC64
  74. config STACKTRACE_SUPPORT
  75. bool
  76. default y if SPARC64
  77. config LOCKDEP_SUPPORT
  78. bool
  79. default y if SPARC64
  80. config HAVE_LATENCYTOP_SUPPORT
  81. bool
  82. default y if SPARC64
  83. config AUDIT_ARCH
  84. bool
  85. default y
  86. config HAVE_SETUP_PER_CPU_AREA
  87. def_bool y if SPARC64
  88. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  89. def_bool y if SPARC64
  90. config NEED_PER_CPU_PAGE_FIRST_CHUNK
  91. def_bool y if SPARC64
  92. config GENERIC_HARDIRQS_NO__DO_IRQ
  93. bool
  94. def_bool y if SPARC64
  95. config MMU
  96. bool
  97. default y
  98. config HIGHMEM
  99. bool
  100. default y if SPARC32
  101. config ZONE_DMA
  102. bool
  103. default y if SPARC32
  104. config GENERIC_ISA_DMA
  105. bool
  106. default y if SPARC32
  107. config GENERIC_GPIO
  108. bool
  109. help
  110. Generic GPIO API support
  111. config ARCH_NO_VIRT_TO_BUS
  112. def_bool y
  113. config OF
  114. def_bool y
  115. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  116. def_bool y if SPARC64
  117. source "init/Kconfig"
  118. source "kernel/Kconfig.freezer"
  119. menu "Processor type and features"
  120. config SMP
  121. bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
  122. ---help---
  123. This enables support for systems with more than one CPU. If you have
  124. a system with only one CPU, say N. If you have a system with more
  125. than one CPU, say Y.
  126. If you say N here, the kernel will run on single and multiprocessor
  127. machines, but will use only one CPU of a multiprocessor machine. If
  128. you say Y here, the kernel will run on many, but not all,
  129. singleprocessor machines. On a singleprocessor machine, the kernel
  130. will run faster if you say N here.
  131. People using multiprocessor machines who say Y here should also say
  132. Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  133. Management" code will be disabled if you say Y here.
  134. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  135. available at <http://www.tldp.org/docs.html#howto>.
  136. If you don't know what to do here, say N.
  137. config NR_CPUS
  138. int "Maximum number of CPUs"
  139. depends on SMP
  140. range 2 32 if SPARC32
  141. range 2 1024 if SPARC64
  142. default 32 if SPARC32
  143. default 64 if SPARC64
  144. source kernel/Kconfig.hz
  145. config RWSEM_GENERIC_SPINLOCK
  146. bool
  147. default y if SPARC32
  148. config RWSEM_XCHGADD_ALGORITHM
  149. bool
  150. default y if SPARC64
  151. config GENERIC_FIND_NEXT_BIT
  152. bool
  153. default y
  154. config GENERIC_HWEIGHT
  155. bool
  156. default y if !ULTRA_HAS_POPULATION_COUNT
  157. config GENERIC_CALIBRATE_DELAY
  158. bool
  159. default y
  160. config ARCH_MAY_HAVE_PC_FDC
  161. bool
  162. default y
  163. config EMULATED_CMPXCHG
  164. bool
  165. default y if SPARC32
  166. help
  167. Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
  168. is emulated, and therefore it is not completely atomic.
  169. # Makefile helpers
  170. config SPARC32_SMP
  171. bool
  172. default y
  173. depends on SPARC32 && SMP
  174. config SPARC64_SMP
  175. bool
  176. default y
  177. depends on SPARC64 && SMP
  178. config EARLYFB
  179. bool "Support for early boot text console"
  180. default y
  181. depends on SPARC64
  182. help
  183. Say Y here to enable a faster early framebuffer boot console.
  184. choice
  185. prompt "Kernel page size" if SPARC64
  186. default SPARC64_PAGE_SIZE_8KB
  187. config SPARC64_PAGE_SIZE_8KB
  188. bool "8KB"
  189. help
  190. This lets you select the page size of the kernel.
  191. 8KB and 64KB work quite well, since SPARC ELF sections
  192. provide for up to 64KB alignment.
  193. If you don't know what to do, choose 8KB.
  194. config SPARC64_PAGE_SIZE_64KB
  195. bool "64KB"
  196. endchoice
  197. config SECCOMP
  198. bool "Enable seccomp to safely compute untrusted bytecode"
  199. depends on SPARC64 && PROC_FS
  200. default y
  201. help
  202. This kernel feature is useful for number crunching applications
  203. that may need to compute untrusted bytecode during their
  204. execution. By using pipes or other transports made available to
  205. the process as file descriptors supporting the read/write
  206. syscalls, it's possible to isolate those applications in
  207. their own address space using seccomp. Once seccomp is
  208. enabled via /proc/<pid>/seccomp, it cannot be disabled
  209. and the task is only allowed to execute a few safe syscalls
  210. defined by each seccomp mode.
  211. If unsure, say Y. Only embedded should say N here.
  212. config HOTPLUG_CPU
  213. bool "Support for hot-pluggable CPUs"
  214. depends on SPARC64 && SMP
  215. select HOTPLUG
  216. help
  217. Say Y here to experiment with turning CPUs off and on. CPUs
  218. can be controlled through /sys/devices/system/cpu/cpu#.
  219. Say N if you want to disable CPU hotplug.
  220. config GENERIC_HARDIRQS
  221. bool
  222. default y if SPARC64
  223. source "kernel/time/Kconfig"
  224. if SPARC64
  225. source "drivers/cpufreq/Kconfig"
  226. config US3_FREQ
  227. tristate "UltraSPARC-III CPU Frequency driver"
  228. depends on CPU_FREQ
  229. select CPU_FREQ_TABLE
  230. help
  231. This adds the CPUFreq driver for UltraSPARC-III processors.
  232. For details, take a look at <file:Documentation/cpu-freq>.
  233. If in doubt, say N.
  234. config US2E_FREQ
  235. tristate "UltraSPARC-IIe CPU Frequency driver"
  236. depends on CPU_FREQ
  237. select CPU_FREQ_TABLE
  238. help
  239. This adds the CPUFreq driver for UltraSPARC-IIe processors.
  240. For details, take a look at <file:Documentation/cpu-freq>.
  241. If in doubt, say N.
  242. endif
  243. config US3_MC
  244. tristate "UltraSPARC-III Memory Controller driver"
  245. depends on SPARC64
  246. default y
  247. help
  248. This adds a driver for the UltraSPARC-III memory controller.
  249. Loading this driver allows exact mnemonic strings to be
  250. printed in the event of a memory error, so that the faulty DIMM
  251. on the motherboard can be matched to the error.
  252. If in doubt, say Y, as this information can be very useful.
  253. # Global things across all Sun machines.
  254. config GENERIC_LOCKBREAK
  255. bool
  256. default y
  257. depends on SPARC64 && SMP && PREEMPT
  258. choice
  259. prompt "SPARC64 Huge TLB Page Size"
  260. depends on SPARC64 && HUGETLB_PAGE
  261. default HUGETLB_PAGE_SIZE_4MB
  262. config HUGETLB_PAGE_SIZE_4MB
  263. bool "4MB"
  264. config HUGETLB_PAGE_SIZE_512K
  265. bool "512K"
  266. config HUGETLB_PAGE_SIZE_64K
  267. depends on !SPARC64_PAGE_SIZE_64KB
  268. bool "64K"
  269. endchoice
  270. config NUMA
  271. bool "NUMA support"
  272. depends on SPARC64 && SMP
  273. config NODES_SHIFT
  274. int
  275. default "4"
  276. depends on NEED_MULTIPLE_NODES
  277. # Some NUMA nodes have memory ranges that span
  278. # other nodes. Even though a pfn is valid and
  279. # between a node's start and end pfns, it may not
  280. # reside on that node. See memmap_init_zone()
  281. # for details.
  282. config NODES_SPAN_OTHER_NODES
  283. def_bool y
  284. depends on NEED_MULTIPLE_NODES
  285. config ARCH_POPULATES_NODE_MAP
  286. def_bool y if SPARC64
  287. config ARCH_SELECT_MEMORY_MODEL
  288. def_bool y if SPARC64
  289. config ARCH_SPARSEMEM_ENABLE
  290. def_bool y if SPARC64
  291. select SPARSEMEM_VMEMMAP_ENABLE
  292. config ARCH_SPARSEMEM_DEFAULT
  293. def_bool y if SPARC64
  294. source "mm/Kconfig"
  295. config SCHED_SMT
  296. bool "SMT (Hyperthreading) scheduler support"
  297. depends on SPARC64 && SMP
  298. default y
  299. help
  300. SMT scheduler support improves the CPU scheduler's decision making
  301. when dealing with SPARC cpus at a cost of slightly increased overhead
  302. in some places. If unsure say N here.
  303. config SCHED_MC
  304. bool "Multi-core scheduler support"
  305. depends on SPARC64 && SMP
  306. default y
  307. help
  308. Multi-core scheduler support improves the CPU scheduler's decision
  309. making when dealing with multi-core CPU chips at a cost of slightly
  310. increased overhead in some places. If unsure say N here.
  311. if SPARC64
  312. source "kernel/Kconfig.preempt"
  313. endif
  314. config CMDLINE_BOOL
  315. bool "Default bootloader kernel arguments"
  316. depends on SPARC64
  317. config CMDLINE
  318. string "Initial kernel command string"
  319. depends on CMDLINE_BOOL
  320. default "console=ttyS0,9600 root=/dev/sda1"
  321. help
  322. Say Y here if you want to be able to pass default arguments to
  323. the kernel. This will be overridden by the bootloader, if you
  324. use one (such as SILO). This is most useful if you want to boot
  325. a kernel from TFTP, and want default options to be available
  326. with having them passed on the command line.
  327. NOTE: This option WILL override the PROM bootargs setting!
  328. config SUN_PM
  329. bool
  330. default y if SPARC32
  331. help
  332. Enable power management and CPU standby features on supported
  333. SPARC platforms.
  334. config SPARC_LED
  335. tristate "Sun4m LED driver"
  336. depends on SPARC32
  337. help
  338. This driver toggles the front-panel LED on sun4m systems
  339. in a user-specifiable manner. Its state can be probed
  340. by reading /proc/led and its blinking mode can be changed
  341. via writes to /proc/led
  342. config SERIAL_CONSOLE
  343. bool
  344. depends on SPARC32
  345. default y
  346. ---help---
  347. If you say Y here, it will be possible to use a serial port as the
  348. system console (the system console is the device which receives all
  349. kernel messages and warnings and which allows logins in single user
  350. mode). This could be useful if some terminal or printer is connected
  351. to that serial port.
  352. Even if you say Y here, the currently visible virtual console
  353. (/dev/tty0) will still be used as the system console by default, but
  354. you can alter that using a kernel command line option such as
  355. "console=ttyS1". (Try "man bootparam" or see the documentation of
  356. your boot loader (silo) about how to pass options to the kernel at
  357. boot time.)
  358. If you don't have a graphics card installed and you say Y here, the
  359. kernel will automatically use the first serial line, /dev/ttyS0, as
  360. system console.
  361. If unsure, say N.
  362. config SPARC_LEON
  363. bool "Sparc Leon processor family"
  364. depends on SPARC32
  365. ---help---
  366. If you say Y here if you are running on a SPARC-LEON processor.
  367. The LEON processor is a synthesizable VHDL model of the
  368. SPARC-v8 standard. LEON is part of the GRLIB collection of
  369. IP cores that are distributed under GPL. GRLIB can be downloaded
  370. from www.gaisler.com. You can download a sparc-linux cross-compilation
  371. toolchain at www.gaisler.com.
  372. endmenu
  373. menu "Bus options (PCI etc.)"
  374. config SBUS
  375. bool
  376. default y
  377. config SBUSCHAR
  378. bool
  379. default y
  380. config SUN_LDOMS
  381. bool "Sun Logical Domains support"
  382. depends on SPARC64
  383. help
  384. Say Y here is you want to support virtual devices via
  385. Logical Domains.
  386. config PCI
  387. bool "Support for PCI and PS/2 keyboard/mouse"
  388. help
  389. Find out whether your system includes a PCI bus. PCI is the name of
  390. a bus system, i.e. the way the CPU talks to the other stuff inside
  391. your box. If you say Y here, the kernel will include drivers and
  392. infrastructure code to support PCI bus devices.
  393. CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
  394. CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
  395. All of these platforms are extremely obscure, so say N if unsure.
  396. config PCI_DOMAINS
  397. def_bool PCI if SPARC64
  398. config PCI_SYSCALL
  399. def_bool PCI
  400. source "drivers/pci/Kconfig"
  401. source "drivers/pcmcia/Kconfig"
  402. config SUN_OPENPROMFS
  403. tristate "Openprom tree appears in /proc/openprom"
  404. help
  405. If you say Y, the OpenPROM device tree will be available as a
  406. virtual file system, which you can mount to /proc/openprom by "mount
  407. -t openpromfs none /proc/openprom".
  408. To compile the /proc/openprom support as a module, choose M here: the
  409. module will be called openpromfs.
  410. Only choose N if you know in advance that you will not need to modify
  411. OpenPROM settings on the running system.
  412. # Makefile helpers
  413. config SPARC32_PCI
  414. bool
  415. default y
  416. depends on SPARC32 && PCI
  417. config SPARC64_PCI
  418. bool
  419. default y
  420. depends on SPARC64 && PCI
  421. endmenu
  422. menu "Executable file formats"
  423. source "fs/Kconfig.binfmt"
  424. config COMPAT
  425. bool
  426. depends on SPARC64
  427. default y
  428. select COMPAT_BINFMT_ELF
  429. config SYSVIPC_COMPAT
  430. bool
  431. depends on COMPAT && SYSVIPC
  432. default y
  433. endmenu
  434. source "net/Kconfig"
  435. source "drivers/Kconfig"
  436. source "drivers/sbus/char/Kconfig"
  437. source "fs/Kconfig"
  438. source "arch/sparc/Kconfig.debug"
  439. source "security/Kconfig"
  440. source "crypto/Kconfig"
  441. source "lib/Kconfig"