Kconfig 14 KB

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  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. Say yes to build a 64-bit kernel - formerly known as sparc64
  9. Say no to build a 32-bit kernel - formerly known as sparc
  10. config SPARC
  11. bool
  12. default y
  13. select OF
  14. select OF_PROMTREE
  15. select HAVE_IDE
  16. select HAVE_OPROFILE
  17. select HAVE_ARCH_KGDB if !SMP || SPARC64
  18. select HAVE_ARCH_TRACEHOOK
  19. select SYSCTL_EXCEPTION_TRACE
  20. select ARCH_WANT_OPTIONAL_GPIOLIB
  21. select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  22. select RTC_CLASS
  23. select RTC_DRV_M48T59
  24. select HAVE_DMA_ATTRS
  25. select HAVE_DMA_API_DEBUG
  26. select HAVE_ARCH_JUMP_LABEL
  27. select HAVE_GENERIC_HARDIRQS
  28. select GENERIC_IRQ_SHOW
  29. select ARCH_WANT_IPC_PARSE_VERSION
  30. select USE_GENERIC_SMP_HELPERS if SMP
  31. select GENERIC_PCI_IOMAP
  32. select HAVE_NMI_WATCHDOG if SPARC64
  33. select HAVE_BPF_JIT
  34. select HAVE_DEBUG_BUGVERBOSE
  35. select GENERIC_SMP_IDLE_THREAD
  36. select GENERIC_CMOS_UPDATE
  37. select GENERIC_CLOCKEVENTS
  38. select GENERIC_STRNCPY_FROM_USER
  39. select GENERIC_STRNLEN_USER
  40. select MODULES_USE_ELF_RELA
  41. select ODD_RT_SIGACTION
  42. select OLD_SIGSUSPEND
  43. config SPARC32
  44. def_bool !64BIT
  45. select GENERIC_ATOMIC64
  46. select CLZ_TAB
  47. select HAVE_UID16
  48. select OLD_SIGACTION
  49. config SPARC64
  50. def_bool 64BIT
  51. select ARCH_SUPPORTS_MSI
  52. select HAVE_FUNCTION_TRACER
  53. select HAVE_FUNCTION_GRAPH_TRACER
  54. select HAVE_FUNCTION_GRAPH_FP_TEST
  55. select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  56. select HAVE_KRETPROBES
  57. select HAVE_KPROBES
  58. select HAVE_RCU_TABLE_FREE if SMP
  59. select HAVE_MEMBLOCK
  60. select HAVE_MEMBLOCK_NODE_MAP
  61. select HAVE_SYSCALL_WRAPPERS
  62. select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  63. select HAVE_DYNAMIC_FTRACE
  64. select HAVE_FTRACE_MCOUNT_RECORD
  65. select HAVE_SYSCALL_TRACEPOINTS
  66. select HAVE_DEBUG_KMEMLEAK
  67. select RTC_DRV_CMOS
  68. select RTC_DRV_BQ4802
  69. select RTC_DRV_SUN4V
  70. select RTC_DRV_STARFIRE
  71. select HAVE_PERF_EVENTS
  72. select PERF_USE_VMALLOC
  73. select IRQ_PREFLOW_FASTEOI
  74. select ARCH_HAVE_NMI_SAFE_CMPXCHG
  75. select HAVE_C_RECORDMCOUNT
  76. select NO_BOOTMEM
  77. config ARCH_DEFCONFIG
  78. string
  79. default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  80. default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  81. config IOMMU_HELPER
  82. bool
  83. default y if SPARC64
  84. config STACKTRACE_SUPPORT
  85. bool
  86. default y if SPARC64
  87. config LOCKDEP_SUPPORT
  88. bool
  89. default y if SPARC64
  90. config HAVE_LATENCYTOP_SUPPORT
  91. bool
  92. default y if SPARC64
  93. config ARCH_HIBERNATION_POSSIBLE
  94. def_bool y if SPARC64
  95. config AUDIT_ARCH
  96. bool
  97. default y
  98. config HAVE_SETUP_PER_CPU_AREA
  99. def_bool y if SPARC64
  100. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  101. def_bool y if SPARC64
  102. config NEED_PER_CPU_PAGE_FIRST_CHUNK
  103. def_bool y if SPARC64
  104. config MMU
  105. bool
  106. default y
  107. config HIGHMEM
  108. bool
  109. default y if SPARC32
  110. config ZONE_DMA
  111. bool
  112. default y if SPARC32
  113. config NEED_DMA_MAP_STATE
  114. def_bool y
  115. config NEED_SG_DMA_LENGTH
  116. def_bool y
  117. config GENERIC_ISA_DMA
  118. bool
  119. default y if SPARC32
  120. config GENERIC_GPIO
  121. bool
  122. help
  123. Generic GPIO API support
  124. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  125. def_bool y if SPARC64
  126. source "init/Kconfig"
  127. source "kernel/Kconfig.freezer"
  128. menu "Processor type and features"
  129. config SMP
  130. bool "Symmetric multi-processing support"
  131. ---help---
  132. This enables support for systems with more than one CPU. If you have
  133. a system with only one CPU, say N. If you have a system with more
  134. than one CPU, say Y.
  135. If you say N here, the kernel will run on single and multiprocessor
  136. machines, but will use only one CPU of a multiprocessor machine. If
  137. you say Y here, the kernel will run on many, but not all,
  138. singleprocessor machines. On a singleprocessor machine, the kernel
  139. will run faster if you say N here.
  140. People using multiprocessor machines who say Y here should also say
  141. Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  142. Management" code will be disabled if you say Y here.
  143. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  144. available at <http://www.tldp.org/docs.html#howto>.
  145. If you don't know what to do here, say N.
  146. config NR_CPUS
  147. int "Maximum number of CPUs"
  148. depends on SMP
  149. range 2 32 if SPARC32
  150. range 2 1024 if SPARC64
  151. default 32 if SPARC32
  152. default 64 if SPARC64
  153. source kernel/Kconfig.hz
  154. config RWSEM_GENERIC_SPINLOCK
  155. bool
  156. default y if SPARC32
  157. config RWSEM_XCHGADD_ALGORITHM
  158. bool
  159. default y if SPARC64
  160. config GENERIC_HWEIGHT
  161. bool
  162. default y
  163. config GENERIC_CALIBRATE_DELAY
  164. bool
  165. default y
  166. config ARCH_MAY_HAVE_PC_FDC
  167. bool
  168. default y
  169. config EMULATED_CMPXCHG
  170. bool
  171. default y if SPARC32
  172. help
  173. Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
  174. is emulated, and therefore it is not completely atomic.
  175. # Makefile helpers
  176. config SPARC32_SMP
  177. bool
  178. default y
  179. depends on SPARC32 && SMP
  180. config SPARC64_SMP
  181. bool
  182. default y
  183. depends on SPARC64 && SMP
  184. config EARLYFB
  185. bool "Support for early boot text console"
  186. default y
  187. depends on SPARC64
  188. help
  189. Say Y here to enable a faster early framebuffer boot console.
  190. config SECCOMP
  191. bool "Enable seccomp to safely compute untrusted bytecode"
  192. depends on SPARC64 && PROC_FS
  193. default y
  194. help
  195. This kernel feature is useful for number crunching applications
  196. that may need to compute untrusted bytecode during their
  197. execution. By using pipes or other transports made available to
  198. the process as file descriptors supporting the read/write
  199. syscalls, it's possible to isolate those applications in
  200. their own address space using seccomp. Once seccomp is
  201. enabled via /proc/<pid>/seccomp, it cannot be disabled
  202. and the task is only allowed to execute a few safe syscalls
  203. defined by each seccomp mode.
  204. If unsure, say Y. Only embedded should say N here.
  205. config HOTPLUG_CPU
  206. bool "Support for hot-pluggable CPUs"
  207. depends on SPARC64 && SMP
  208. select HOTPLUG
  209. help
  210. Say Y here to experiment with turning CPUs off and on. CPUs
  211. can be controlled through /sys/devices/system/cpu/cpu#.
  212. Say N if you want to disable CPU hotplug.
  213. if SPARC64
  214. source "drivers/cpufreq/Kconfig"
  215. config US3_FREQ
  216. tristate "UltraSPARC-III CPU Frequency driver"
  217. depends on CPU_FREQ
  218. select CPU_FREQ_TABLE
  219. help
  220. This adds the CPUFreq driver for UltraSPARC-III processors.
  221. For details, take a look at <file:Documentation/cpu-freq>.
  222. If in doubt, say N.
  223. config US2E_FREQ
  224. tristate "UltraSPARC-IIe CPU Frequency driver"
  225. depends on CPU_FREQ
  226. select CPU_FREQ_TABLE
  227. help
  228. This adds the CPUFreq driver for UltraSPARC-IIe processors.
  229. For details, take a look at <file:Documentation/cpu-freq>.
  230. If in doubt, say N.
  231. endif
  232. config US3_MC
  233. tristate "UltraSPARC-III Memory Controller driver"
  234. depends on SPARC64
  235. default y
  236. help
  237. This adds a driver for the UltraSPARC-III memory controller.
  238. Loading this driver allows exact mnemonic strings to be
  239. printed in the event of a memory error, so that the faulty DIMM
  240. on the motherboard can be matched to the error.
  241. If in doubt, say Y, as this information can be very useful.
  242. # Global things across all Sun machines.
  243. config GENERIC_LOCKBREAK
  244. bool
  245. default y
  246. depends on SPARC64 && SMP && PREEMPT
  247. config NUMA
  248. bool "NUMA support"
  249. depends on SPARC64 && SMP
  250. config NODES_SHIFT
  251. int
  252. default "4"
  253. depends on NEED_MULTIPLE_NODES
  254. # Some NUMA nodes have memory ranges that span
  255. # other nodes. Even though a pfn is valid and
  256. # between a node's start and end pfns, it may not
  257. # reside on that node. See memmap_init_zone()
  258. # for details.
  259. config NODES_SPAN_OTHER_NODES
  260. def_bool y
  261. depends on NEED_MULTIPLE_NODES
  262. config ARCH_SELECT_MEMORY_MODEL
  263. def_bool y if SPARC64
  264. config ARCH_SPARSEMEM_ENABLE
  265. def_bool y if SPARC64
  266. select SPARSEMEM_VMEMMAP_ENABLE
  267. config ARCH_SPARSEMEM_DEFAULT
  268. def_bool y if SPARC64
  269. source "mm/Kconfig"
  270. if SPARC64
  271. source "kernel/power/Kconfig"
  272. endif
  273. config SCHED_SMT
  274. bool "SMT (Hyperthreading) scheduler support"
  275. depends on SPARC64 && SMP
  276. default y
  277. help
  278. SMT scheduler support improves the CPU scheduler's decision making
  279. when dealing with SPARC cpus at a cost of slightly increased overhead
  280. in some places. If unsure say N here.
  281. config SCHED_MC
  282. bool "Multi-core scheduler support"
  283. depends on SPARC64 && SMP
  284. default y
  285. help
  286. Multi-core scheduler support improves the CPU scheduler's decision
  287. making when dealing with multi-core CPU chips at a cost of slightly
  288. increased overhead in some places. If unsure say N here.
  289. source "kernel/Kconfig.preempt"
  290. config CMDLINE_BOOL
  291. bool "Default bootloader kernel arguments"
  292. depends on SPARC64
  293. config CMDLINE
  294. string "Initial kernel command string"
  295. depends on CMDLINE_BOOL
  296. default "console=ttyS0,9600 root=/dev/sda1"
  297. help
  298. Say Y here if you want to be able to pass default arguments to
  299. the kernel. This will be overridden by the bootloader, if you
  300. use one (such as SILO). This is most useful if you want to boot
  301. a kernel from TFTP, and want default options to be available
  302. with having them passed on the command line.
  303. NOTE: This option WILL override the PROM bootargs setting!
  304. config SUN_PM
  305. bool
  306. default y if SPARC32
  307. help
  308. Enable power management and CPU standby features on supported
  309. SPARC platforms.
  310. config SPARC_LED
  311. tristate "Sun4m LED driver"
  312. depends on SPARC32
  313. help
  314. This driver toggles the front-panel LED on sun4m systems
  315. in a user-specifiable manner. Its state can be probed
  316. by reading /proc/led and its blinking mode can be changed
  317. via writes to /proc/led
  318. config SERIAL_CONSOLE
  319. bool
  320. depends on SPARC32
  321. default y
  322. ---help---
  323. If you say Y here, it will be possible to use a serial port as the
  324. system console (the system console is the device which receives all
  325. kernel messages and warnings and which allows logins in single user
  326. mode). This could be useful if some terminal or printer is connected
  327. to that serial port.
  328. Even if you say Y here, the currently visible virtual console
  329. (/dev/tty0) will still be used as the system console by default, but
  330. you can alter that using a kernel command line option such as
  331. "console=ttyS1". (Try "man bootparam" or see the documentation of
  332. your boot loader (silo) about how to pass options to the kernel at
  333. boot time.)
  334. If you don't have a graphics card installed and you say Y here, the
  335. kernel will automatically use the first serial line, /dev/ttyS0, as
  336. system console.
  337. If unsure, say N.
  338. config SPARC_LEON
  339. bool "Sparc Leon processor family"
  340. depends on SPARC32
  341. ---help---
  342. If you say Y here if you are running on a SPARC-LEON processor.
  343. The LEON processor is a synthesizable VHDL model of the
  344. SPARC-v8 standard. LEON is part of the GRLIB collection of
  345. IP cores that are distributed under GPL. GRLIB can be downloaded
  346. from www.gaisler.com. You can download a sparc-linux cross-compilation
  347. toolchain at www.gaisler.com.
  348. if SPARC_LEON
  349. menu "U-Boot options"
  350. config UBOOT_LOAD_ADDR
  351. hex "uImage Load Address"
  352. default 0x40004000
  353. ---help---
  354. U-Boot kernel load address, the address in physical address space
  355. where u-boot will place the Linux kernel before booting it.
  356. This address is normally the base address of main memory + 0x4000.
  357. config UBOOT_FLASH_ADDR
  358. hex "uImage.o Load Address"
  359. default 0x00080000
  360. ---help---
  361. Optional setting only affecting the uImage.o ELF-image used to
  362. download the uImage file to the target using a ELF-loader other than
  363. U-Boot. It may for example be used to download an uImage to FLASH with
  364. the GRMON utility before even starting u-boot.
  365. config UBOOT_ENTRY_ADDR
  366. hex "uImage Entry Address"
  367. default 0xf0004000
  368. ---help---
  369. Do not change this unless you know what you're doing. This is
  370. hardcoded by the SPARC32 and LEON port.
  371. This is the virtual address u-boot jumps to when booting the Linux
  372. Kernel.
  373. endmenu
  374. endif
  375. endmenu
  376. menu "Bus options (PCI etc.)"
  377. config SBUS
  378. bool
  379. default y
  380. config SBUSCHAR
  381. bool
  382. default y
  383. config SUN_LDOMS
  384. bool "Sun Logical Domains support"
  385. depends on SPARC64
  386. help
  387. Say Y here is you want to support virtual devices via
  388. Logical Domains.
  389. config PCI
  390. bool "Support for PCI and PS/2 keyboard/mouse"
  391. help
  392. Find out whether your system includes a PCI bus. PCI is the name of
  393. a bus system, i.e. the way the CPU talks to the other stuff inside
  394. your box. If you say Y here, the kernel will include drivers and
  395. infrastructure code to support PCI bus devices.
  396. CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
  397. CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
  398. All of these platforms are extremely obscure, so say N if unsure.
  399. config PCI_DOMAINS
  400. def_bool PCI if SPARC64
  401. config PCI_SYSCALL
  402. def_bool PCI
  403. config PCIC_PCI
  404. bool
  405. depends on PCI && SPARC32 && !SPARC_LEON
  406. default y
  407. config LEON_PCI
  408. bool
  409. depends on PCI && SPARC_LEON
  410. default y
  411. config SPARC_GRPCI1
  412. bool "GRPCI Host Bridge Support"
  413. depends on LEON_PCI
  414. default y
  415. help
  416. Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
  417. PCI host controller is typically found in GRLIB SPARC32/LEON
  418. systems. The driver has one property (all_pci_errors) controlled
  419. from the bootloader that makes the GRPCI to generate interrupts
  420. on detected PCI Parity and System errors.
  421. config SPARC_GRPCI2
  422. bool "GRPCI2 Host Bridge Support"
  423. depends on LEON_PCI
  424. default y
  425. help
  426. Say Y here to include the GRPCI2 Host Bridge Driver.
  427. source "drivers/pci/Kconfig"
  428. source "drivers/pcmcia/Kconfig"
  429. config SUN_OPENPROMFS
  430. tristate "Openprom tree appears in /proc/openprom"
  431. help
  432. If you say Y, the OpenPROM device tree will be available as a
  433. virtual file system, which you can mount to /proc/openprom by "mount
  434. -t openpromfs none /proc/openprom".
  435. To compile the /proc/openprom support as a module, choose M here: the
  436. module will be called openpromfs.
  437. Only choose N if you know in advance that you will not need to modify
  438. OpenPROM settings on the running system.
  439. # Makefile helper
  440. config SPARC64_PCI
  441. bool
  442. default y
  443. depends on SPARC64 && PCI
  444. endmenu
  445. menu "Executable file formats"
  446. source "fs/Kconfig.binfmt"
  447. config COMPAT
  448. bool
  449. depends on SPARC64
  450. default y
  451. select COMPAT_BINFMT_ELF
  452. select HAVE_UID16
  453. select ARCH_WANT_OLD_COMPAT_IPC
  454. select COMPAT_OLD_SIGACTION
  455. config SYSVIPC_COMPAT
  456. bool
  457. depends on COMPAT && SYSVIPC
  458. default y
  459. config KEYS_COMPAT
  460. def_bool y if COMPAT && KEYS
  461. endmenu
  462. source "net/Kconfig"
  463. source "drivers/Kconfig"
  464. source "drivers/sbus/char/Kconfig"
  465. source "fs/Kconfig"
  466. source "arch/sparc/Kconfig.debug"
  467. source "security/Kconfig"
  468. source "crypto/Kconfig"
  469. source "lib/Kconfig"