Kconfig 12 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 SPARC
  6. bool
  7. default y
  8. select HAVE_IDE
  9. select HAVE_OPROFILE
  10. select HAVE_ARCH_KGDB if !SMP || SPARC64
  11. select HAVE_ARCH_TRACEHOOK
  12. select ARCH_WANT_OPTIONAL_GPIOLIB
  13. select RTC_CLASS
  14. select RTC_DRV_M48T59
  15. # Identify this as a Sparc32 build
  16. config SPARC32
  17. bool
  18. default y if ARCH = "sparc"
  19. help
  20. SPARC is a family of RISC microprocessors designed and marketed by
  21. Sun Microsystems, incorporated. They are very widely found in Sun
  22. workstations and clones. This port covers the original 32-bit SPARC;
  23. it is old and stable and usually considered one of the "big three"
  24. along with the Intel and Alpha ports. The UltraLinux project
  25. maintains both the SPARC32 and SPARC64 ports; its web page is
  26. available at <http://www.ultralinux.org/>.
  27. config SPARC64
  28. bool
  29. default y if ARCH = "sparc64"
  30. select HAVE_FUNCTION_TRACER
  31. select HAVE_KRETPROBES
  32. select HAVE_KPROBES
  33. select HAVE_LMB
  34. select USE_GENERIC_SMP_HELPERS if SMP
  35. select RTC_DRV_CMOS
  36. select RTC_DRV_BQ4802
  37. select RTC_DRV_SUN4V
  38. select RTC_DRV_STARFIRE
  39. config ARCH_DEFCONFIG
  40. string
  41. default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  42. default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  43. # CONFIG_BITS can be used at source level to get 32/64 bits
  44. config BITS
  45. int
  46. default 32 if SPARC32
  47. default 64 if SPARC64
  48. config 64BIT
  49. def_bool y if SPARC64
  50. config GENERIC_TIME
  51. bool
  52. default y if SPARC64
  53. config GENERIC_CMOS_UPDATE
  54. bool
  55. default y if SPARC64
  56. config GENERIC_CLOCKEVENTS
  57. bool
  58. default y if SPARC64
  59. config IOMMU_HELPER
  60. bool
  61. default y if SPARC64
  62. config QUICKLIST
  63. bool
  64. default y if SPARC64
  65. config STACKTRACE_SUPPORT
  66. bool
  67. default y if SPARC64
  68. config LOCKDEP_SUPPORT
  69. bool
  70. default y if SPARC64
  71. config HAVE_LATENCYTOP_SUPPORT
  72. bool
  73. default y if SPARC64
  74. config AUDIT_ARCH
  75. bool
  76. default y
  77. config HAVE_SETUP_PER_CPU_AREA
  78. def_bool y if SPARC64
  79. config GENERIC_HARDIRQS_NO__DO_IRQ
  80. bool
  81. def_bool y if SPARC64
  82. config MMU
  83. bool
  84. default y
  85. config HIGHMEM
  86. bool
  87. default y if SPARC32
  88. config ZONE_DMA
  89. bool
  90. default y if SPARC32
  91. config GENERIC_ISA_DMA
  92. bool
  93. default y if SPARC32
  94. config GENERIC_GPIO
  95. bool
  96. help
  97. Generic GPIO API support
  98. config ARCH_NO_VIRT_TO_BUS
  99. def_bool y
  100. config OF
  101. def_bool y
  102. source "init/Kconfig"
  103. source "kernel/Kconfig.freezer"
  104. menu "Processor type and features"
  105. config SMP
  106. bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
  107. ---help---
  108. This enables support for systems with more than one CPU. If you have
  109. a system with only one CPU, say N. If you have a system with more
  110. than one CPU, say Y.
  111. If you say N here, the kernel will run on single and multiprocessor
  112. machines, but will use only one CPU of a multiprocessor machine. If
  113. you say Y here, the kernel will run on many, but not all,
  114. singleprocessor machines. On a singleprocessor machine, the kernel
  115. will run faster if you say N here.
  116. People using multiprocessor machines who say Y here should also say
  117. Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  118. Management" code will be disabled if you say Y here.
  119. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  120. available at <http://www.tldp.org/docs.html#howto>.
  121. If you don't know what to do here, say N.
  122. config NR_CPUS
  123. int "Maximum number of CPUs"
  124. depends on SMP
  125. range 2 32 if SPARC32
  126. range 2 1024 if SPARC64
  127. default 32 if SPARC32
  128. default 64 if SPARC64
  129. source kernel/Kconfig.hz
  130. config RWSEM_GENERIC_SPINLOCK
  131. bool
  132. default y if SPARC32
  133. config RWSEM_XCHGADD_ALGORITHM
  134. bool
  135. default y if SPARC64
  136. config GENERIC_FIND_NEXT_BIT
  137. bool
  138. default y
  139. config GENERIC_HWEIGHT
  140. bool
  141. default y if !ULTRA_HAS_POPULATION_COUNT
  142. config GENERIC_CALIBRATE_DELAY
  143. bool
  144. default y
  145. config ARCH_MAY_HAVE_PC_FDC
  146. bool
  147. default y
  148. config ARCH_HAS_ILOG2_U32
  149. bool
  150. default n
  151. config ARCH_HAS_ILOG2_U64
  152. bool
  153. default n
  154. config EMULATED_CMPXCHG
  155. bool
  156. default y if SPARC32
  157. help
  158. Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
  159. is emulated, and therefore it is not completely atomic.
  160. # Makefile helpers
  161. config SPARC32_SMP
  162. bool
  163. default y
  164. depends on SPARC32 && SMP
  165. config SPARC64_SMP
  166. bool
  167. default y
  168. depends on SPARC64 && SMP
  169. choice
  170. prompt "Kernel page size" if SPARC64
  171. default SPARC64_PAGE_SIZE_8KB
  172. config SPARC64_PAGE_SIZE_8KB
  173. bool "8KB"
  174. help
  175. This lets you select the page size of the kernel.
  176. 8KB and 64KB work quite well, since SPARC ELF sections
  177. provide for up to 64KB alignment.
  178. If you don't know what to do, choose 8KB.
  179. config SPARC64_PAGE_SIZE_64KB
  180. bool "64KB"
  181. endchoice
  182. config SECCOMP
  183. bool "Enable seccomp to safely compute untrusted bytecode"
  184. depends on SPARC64 && PROC_FS
  185. default y
  186. help
  187. This kernel feature is useful for number crunching applications
  188. that may need to compute untrusted bytecode during their
  189. execution. By using pipes or other transports made available to
  190. the process as file descriptors supporting the read/write
  191. syscalls, it's possible to isolate those applications in
  192. their own address space using seccomp. Once seccomp is
  193. enabled via /proc/<pid>/seccomp, it cannot be disabled
  194. and the task is only allowed to execute a few safe syscalls
  195. defined by each seccomp mode.
  196. If unsure, say Y. Only embedded should say N here.
  197. config HOTPLUG_CPU
  198. bool "Support for hot-pluggable CPUs"
  199. depends on SPARC64 && SMP
  200. select HOTPLUG
  201. help
  202. Say Y here to experiment with turning CPUs off and on. CPUs
  203. can be controlled through /sys/devices/system/cpu/cpu#.
  204. Say N if you want to disable CPU hotplug.
  205. config GENERIC_HARDIRQS
  206. bool
  207. default y if SPARC64
  208. source "kernel/time/Kconfig"
  209. if SPARC64
  210. source "drivers/cpufreq/Kconfig"
  211. config US3_FREQ
  212. tristate "UltraSPARC-III CPU Frequency driver"
  213. depends on CPU_FREQ
  214. select CPU_FREQ_TABLE
  215. help
  216. This adds the CPUFreq driver for UltraSPARC-III processors.
  217. For details, take a look at <file:Documentation/cpu-freq>.
  218. If in doubt, say N.
  219. config US2E_FREQ
  220. tristate "UltraSPARC-IIe CPU Frequency driver"
  221. depends on CPU_FREQ
  222. select CPU_FREQ_TABLE
  223. help
  224. This adds the CPUFreq driver for UltraSPARC-IIe processors.
  225. For details, take a look at <file:Documentation/cpu-freq>.
  226. If in doubt, say N.
  227. endif
  228. config US3_MC
  229. tristate "UltraSPARC-III Memory Controller driver"
  230. depends on SPARC64
  231. default y
  232. help
  233. This adds a driver for the UltraSPARC-III memory controller.
  234. Loading this driver allows exact mnemonic strings to be
  235. printed in the event of a memory error, so that the faulty DIMM
  236. on the motherboard can be matched to the error.
  237. If in doubt, say Y, as this information can be very useful.
  238. # Global things across all Sun machines.
  239. config GENERIC_LOCKBREAK
  240. bool
  241. default y
  242. depends on SPARC64 && SMP && PREEMPT
  243. choice
  244. prompt "SPARC64 Huge TLB Page Size"
  245. depends on SPARC64 && HUGETLB_PAGE
  246. default HUGETLB_PAGE_SIZE_4MB
  247. config HUGETLB_PAGE_SIZE_4MB
  248. bool "4MB"
  249. config HUGETLB_PAGE_SIZE_512K
  250. bool "512K"
  251. config HUGETLB_PAGE_SIZE_64K
  252. depends on !SPARC64_PAGE_SIZE_64KB
  253. bool "64K"
  254. endchoice
  255. config NUMA
  256. bool "NUMA support"
  257. depends on SPARC64 && SMP
  258. config NODES_SHIFT
  259. int
  260. default "4"
  261. depends on NEED_MULTIPLE_NODES
  262. # Some NUMA nodes have memory ranges that span
  263. # other nodes. Even though a pfn is valid and
  264. # between a node's start and end pfns, it may not
  265. # reside on that node. See memmap_init_zone()
  266. # for details.
  267. config NODES_SPAN_OTHER_NODES
  268. def_bool y
  269. depends on NEED_MULTIPLE_NODES
  270. config ARCH_POPULATES_NODE_MAP
  271. def_bool y if SPARC64
  272. config ARCH_SELECT_MEMORY_MODEL
  273. def_bool y if SPARC64
  274. config ARCH_SPARSEMEM_ENABLE
  275. def_bool y if SPARC64
  276. select SPARSEMEM_VMEMMAP_ENABLE
  277. config ARCH_SPARSEMEM_DEFAULT
  278. def_bool y if SPARC64
  279. source "mm/Kconfig"
  280. config SCHED_SMT
  281. bool "SMT (Hyperthreading) scheduler support"
  282. depends on SPARC64 && SMP
  283. default y
  284. help
  285. SMT scheduler support improves the CPU scheduler's decision making
  286. when dealing with SPARC cpus at a cost of slightly increased overhead
  287. in some places. If unsure say N here.
  288. config SCHED_MC
  289. bool "Multi-core scheduler support"
  290. depends on SPARC64 && SMP
  291. default y
  292. help
  293. Multi-core scheduler support improves the CPU scheduler's decision
  294. making when dealing with multi-core CPU chips at a cost of slightly
  295. increased overhead in some places. If unsure say N here.
  296. if SPARC64
  297. source "kernel/Kconfig.preempt"
  298. endif
  299. config CMDLINE_BOOL
  300. bool "Default bootloader kernel arguments"
  301. depends on SPARC64
  302. config CMDLINE
  303. string "Initial kernel command string"
  304. depends on CMDLINE_BOOL
  305. default "console=ttyS0,9600 root=/dev/sda1"
  306. help
  307. Say Y here if you want to be able to pass default arguments to
  308. the kernel. This will be overridden by the bootloader, if you
  309. use one (such as SILO). This is most useful if you want to boot
  310. a kernel from TFTP, and want default options to be available
  311. with having them passed on the command line.
  312. NOTE: This option WILL override the PROM bootargs setting!
  313. config SUN_PM
  314. bool
  315. default y if SPARC32
  316. help
  317. Enable power management and CPU standby features on supported
  318. SPARC platforms.
  319. config SPARC_LED
  320. tristate "Sun4m LED driver"
  321. depends on SPARC32
  322. help
  323. This driver toggles the front-panel LED on sun4m systems
  324. in a user-specifiable manner. Its state can be probed
  325. by reading /proc/led and its blinking mode can be changed
  326. via writes to /proc/led
  327. config SERIAL_CONSOLE
  328. bool
  329. depends on SPARC32
  330. default y
  331. ---help---
  332. If you say Y here, it will be possible to use a serial port as the
  333. system console (the system console is the device which receives all
  334. kernel messages and warnings and which allows logins in single user
  335. mode). This could be useful if some terminal or printer is connected
  336. to that serial port.
  337. Even if you say Y here, the currently visible virtual console
  338. (/dev/tty0) will still be used as the system console by default, but
  339. you can alter that using a kernel command line option such as
  340. "console=ttyS1". (Try "man bootparam" or see the documentation of
  341. your boot loader (silo) about how to pass options to the kernel at
  342. boot time.)
  343. If you don't have a graphics card installed and you say Y here, the
  344. kernel will automatically use the first serial line, /dev/ttyS0, as
  345. system console.
  346. If unsure, say N.
  347. endmenu
  348. menu "Bus options (PCI etc.)"
  349. config ISA
  350. bool
  351. help
  352. ISA is found on Espresso only and is not supported currently.
  353. config ISAPNP
  354. bool
  355. help
  356. ISAPNP is not supported
  357. config EISA
  358. bool
  359. help
  360. EISA is not supported.
  361. config MCA
  362. bool
  363. help
  364. MCA is not supported.
  365. config SBUS
  366. bool
  367. default y
  368. config SBUSCHAR
  369. bool
  370. default y
  371. config SUN_LDOMS
  372. bool "Sun Logical Domains support"
  373. depends on SPARC64
  374. help
  375. Say Y here is you want to support virtual devices via
  376. Logical Domains.
  377. config PCI
  378. bool "Support for PCI and PS/2 keyboard/mouse"
  379. select ARCH_SUPPORTS_MSI if SPARC64
  380. help
  381. Find out whether your system includes a PCI bus. PCI is the name of
  382. a bus system, i.e. the way the CPU talks to the other stuff inside
  383. your box. If you say Y here, the kernel will include drivers and
  384. infrastructure code to support PCI bus devices.
  385. CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
  386. CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
  387. All of these platforms are extremely obscure, so say N if unsure.
  388. config PCI_DOMAINS
  389. def_bool PCI if SPARC64
  390. config PCI_SYSCALL
  391. def_bool PCI
  392. source "drivers/pci/Kconfig"
  393. source "drivers/pcmcia/Kconfig"
  394. config SUN_OPENPROMFS
  395. tristate "Openprom tree appears in /proc/openprom"
  396. help
  397. If you say Y, the OpenPROM device tree will be available as a
  398. virtual file system, which you can mount to /proc/openprom by "mount
  399. -t openpromfs none /proc/openprom".
  400. To compile the /proc/openprom support as a module, choose M here: the
  401. module will be called openpromfs.
  402. Only choose N if you know in advance that you will not need to modify
  403. OpenPROM settings on the running system.
  404. # Makefile helpers
  405. config SPARC32_PCI
  406. bool
  407. default y
  408. depends on SPARC32 && PCI
  409. config SPARC64_PCI
  410. bool
  411. default y
  412. depends on SPARC64 && PCI
  413. endmenu
  414. menu "Executable file formats"
  415. source "fs/Kconfig.binfmt"
  416. config COMPAT
  417. bool
  418. depends on SPARC64
  419. default y
  420. select COMPAT_BINFMT_ELF
  421. config SYSVIPC_COMPAT
  422. bool
  423. depends on COMPAT && SYSVIPC
  424. default y
  425. endmenu
  426. source "net/Kconfig"
  427. source "drivers/Kconfig"
  428. source "drivers/sbus/char/Kconfig"
  429. source "fs/Kconfig"
  430. source "arch/sparc/Kconfig.debug"
  431. source "security/Kconfig"
  432. source "crypto/Kconfig"
  433. source "lib/Kconfig"