Kconfig 20 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914
  1. #
  2. # For a description of the syntax of this configuration file,
  3. # see Documentation/kbuild/kconfig-language.txt.
  4. #
  5. mainmenu "Linux/SuperH Kernel Configuration"
  6. config SUPERH
  7. def_bool y
  8. select EMBEDDED
  9. select HAVE_CLK
  10. select HAVE_IDE if HAS_IOPORT
  11. select HAVE_MEMBLOCK
  12. select HAVE_OPROFILE
  13. select HAVE_GENERIC_DMA_COHERENT
  14. select HAVE_ARCH_TRACEHOOK
  15. select HAVE_DMA_API_DEBUG
  16. select HAVE_DMA_ATTRS
  17. select HAVE_PERF_EVENTS
  18. select PERF_USE_VMALLOC
  19. select HAVE_KERNEL_GZIP
  20. select HAVE_KERNEL_BZIP2
  21. select HAVE_KERNEL_LZMA
  22. select HAVE_KERNEL_LZO
  23. select HAVE_SYSCALL_TRACEPOINTS
  24. select RTC_LIB
  25. select GENERIC_ATOMIC64
  26. help
  27. The SuperH is a RISC processor targeted for use in embedded systems
  28. and consumer electronics; it was also used in the Sega Dreamcast
  29. gaming console. The SuperH port has a home page at
  30. <http://www.linux-sh.org/>.
  31. config SUPERH32
  32. def_bool ARCH = "sh"
  33. select HAVE_KPROBES
  34. select HAVE_KRETPROBES
  35. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  36. select HAVE_FUNCTION_TRACER
  37. select HAVE_FTRACE_MCOUNT_RECORD
  38. select HAVE_DYNAMIC_FTRACE
  39. select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  40. select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  41. select HAVE_FUNCTION_GRAPH_TRACER
  42. select HAVE_ARCH_KGDB
  43. select HAVE_HW_BREAKPOINT
  44. select HAVE_MIXED_BREAKPOINTS_REGS
  45. select PERF_EVENTS if HAVE_HW_BREAKPOINT
  46. select ARCH_HIBERNATION_POSSIBLE if MMU
  47. config SUPERH64
  48. def_bool ARCH = "sh64"
  49. config ARCH_DEFCONFIG
  50. string
  51. default "arch/sh/configs/shx3_defconfig" if SUPERH32
  52. default "arch/sh/configs/cayman_defconfig" if SUPERH64
  53. config RWSEM_GENERIC_SPINLOCK
  54. def_bool y
  55. config RWSEM_XCHGADD_ALGORITHM
  56. bool
  57. config GENERIC_BUG
  58. def_bool y
  59. depends on BUG && SUPERH32
  60. config GENERIC_CSUM
  61. def_bool y
  62. depends on SUPERH64
  63. config GENERIC_FIND_NEXT_BIT
  64. def_bool y
  65. config GENERIC_HWEIGHT
  66. def_bool y
  67. config GENERIC_HARDIRQS
  68. def_bool y
  69. config GENERIC_HARDIRQS_NO__DO_IRQ
  70. def_bool y
  71. config IRQ_PER_CPU
  72. def_bool y
  73. config SPARSE_IRQ
  74. def_bool y
  75. depends on SUPERH32
  76. config GENERIC_GPIO
  77. def_bool n
  78. config GENERIC_CALIBRATE_DELAY
  79. bool
  80. config GENERIC_IOMAP
  81. bool
  82. config GENERIC_CLOCKEVENTS
  83. def_bool y
  84. config GENERIC_CLOCKEVENTS_BROADCAST
  85. bool
  86. config GENERIC_CMOS_UPDATE
  87. def_bool y
  88. depends on SH_SH03 || SH_DREAMCAST
  89. config GENERIC_LOCKBREAK
  90. def_bool y
  91. depends on SMP && PREEMPT
  92. config SYS_SUPPORTS_PM
  93. bool
  94. depends on !SMP
  95. config ARCH_SUSPEND_POSSIBLE
  96. def_bool n
  97. config ARCH_HIBERNATION_POSSIBLE
  98. def_bool n
  99. config SYS_SUPPORTS_APM_EMULATION
  100. bool
  101. select ARCH_SUSPEND_POSSIBLE
  102. config SYS_SUPPORTS_HUGETLBFS
  103. bool
  104. config SYS_SUPPORTS_SMP
  105. bool
  106. config SYS_SUPPORTS_NUMA
  107. bool
  108. config SYS_SUPPORTS_PCI
  109. bool
  110. config SYS_SUPPORTS_CMT
  111. bool
  112. config SYS_SUPPORTS_MTU2
  113. bool
  114. config SYS_SUPPORTS_TMU
  115. bool
  116. config STACKTRACE_SUPPORT
  117. def_bool y
  118. config LOCKDEP_SUPPORT
  119. def_bool y
  120. config HAVE_LATENCYTOP_SUPPORT
  121. def_bool y
  122. config ARCH_HAS_ILOG2_U32
  123. def_bool n
  124. config ARCH_HAS_ILOG2_U64
  125. def_bool n
  126. config ARCH_NO_VIRT_TO_BUS
  127. def_bool y
  128. config ARCH_HAS_DEFAULT_IDLE
  129. def_bool y
  130. config ARCH_HAS_CPU_IDLE_WAIT
  131. def_bool y
  132. config NO_IOPORT
  133. bool
  134. config IO_TRAPPED
  135. bool
  136. config DMA_COHERENT
  137. bool
  138. config DMA_NONCOHERENT
  139. def_bool !DMA_COHERENT
  140. config NEED_DMA_MAP_STATE
  141. def_bool DMA_NONCOHERENT
  142. config NEED_SG_DMA_LENGTH
  143. def_bool y
  144. source "init/Kconfig"
  145. source "kernel/Kconfig.freezer"
  146. menu "System type"
  147. #
  148. # Processor families
  149. #
  150. config CPU_SH2
  151. bool
  152. config CPU_SH2A
  153. bool
  154. select CPU_SH2
  155. config CPU_SH3
  156. bool
  157. select CPU_HAS_INTEVT
  158. select CPU_HAS_SR_RB
  159. select SYS_SUPPORTS_TMU
  160. config CPU_SH4
  161. bool
  162. select CPU_HAS_INTEVT
  163. select CPU_HAS_SR_RB
  164. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  165. select SYS_SUPPORTS_TMU
  166. select SYS_SUPPORTS_HUGETLBFS if MMU
  167. config CPU_SH4A
  168. bool
  169. select CPU_SH4
  170. config CPU_SH4AL_DSP
  171. bool
  172. select CPU_SH4A
  173. select CPU_HAS_DSP
  174. config CPU_SH5
  175. bool
  176. select CPU_HAS_FPU
  177. select SYS_SUPPORTS_TMU
  178. select SYS_SUPPORTS_HUGETLBFS if MMU
  179. config CPU_SHX2
  180. bool
  181. config CPU_SHX3
  182. bool
  183. select DMA_COHERENT
  184. select SYS_SUPPORTS_SMP
  185. select SYS_SUPPORTS_NUMA
  186. config ARCH_SHMOBILE
  187. bool
  188. select ARCH_SUSPEND_POSSIBLE
  189. select PM
  190. select PM_RUNTIME
  191. config CPU_HAS_PMU
  192. depends on CPU_SH4 || CPU_SH4A
  193. default y
  194. bool
  195. if SUPERH32
  196. choice
  197. prompt "Processor sub-type selection"
  198. #
  199. # Processor subtypes
  200. #
  201. # SH-2 Processor Support
  202. config CPU_SUBTYPE_SH7619
  203. bool "Support SH7619 processor"
  204. select CPU_SH2
  205. select SYS_SUPPORTS_CMT
  206. # SH-2A Processor Support
  207. config CPU_SUBTYPE_SH7201
  208. bool "Support SH7201 processor"
  209. select CPU_SH2A
  210. select CPU_HAS_FPU
  211. select SYS_SUPPORTS_MTU2
  212. config CPU_SUBTYPE_SH7203
  213. bool "Support SH7203 processor"
  214. select CPU_SH2A
  215. select CPU_HAS_FPU
  216. select SYS_SUPPORTS_CMT
  217. select SYS_SUPPORTS_MTU2
  218. config CPU_SUBTYPE_SH7206
  219. bool "Support SH7206 processor"
  220. select CPU_SH2A
  221. select SYS_SUPPORTS_CMT
  222. select SYS_SUPPORTS_MTU2
  223. config CPU_SUBTYPE_SH7263
  224. bool "Support SH7263 processor"
  225. select CPU_SH2A
  226. select CPU_HAS_FPU
  227. select SYS_SUPPORTS_CMT
  228. select SYS_SUPPORTS_MTU2
  229. config CPU_SUBTYPE_MXG
  230. bool "Support MX-G processor"
  231. select CPU_SH2A
  232. select SYS_SUPPORTS_MTU2
  233. help
  234. Select MX-G if running on an R8A03022BG part.
  235. # SH-3 Processor Support
  236. config CPU_SUBTYPE_SH7705
  237. bool "Support SH7705 processor"
  238. select CPU_SH3
  239. config CPU_SUBTYPE_SH7706
  240. bool "Support SH7706 processor"
  241. select CPU_SH3
  242. help
  243. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  244. config CPU_SUBTYPE_SH7707
  245. bool "Support SH7707 processor"
  246. select CPU_SH3
  247. help
  248. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  249. config CPU_SUBTYPE_SH7708
  250. bool "Support SH7708 processor"
  251. select CPU_SH3
  252. help
  253. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  254. if you have a 100 Mhz SH-3 HD6417708R CPU.
  255. config CPU_SUBTYPE_SH7709
  256. bool "Support SH7709 processor"
  257. select CPU_SH3
  258. help
  259. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  260. config CPU_SUBTYPE_SH7710
  261. bool "Support SH7710 processor"
  262. select CPU_SH3
  263. select CPU_HAS_DSP
  264. help
  265. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  266. config CPU_SUBTYPE_SH7712
  267. bool "Support SH7712 processor"
  268. select CPU_SH3
  269. select CPU_HAS_DSP
  270. help
  271. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  272. config CPU_SUBTYPE_SH7720
  273. bool "Support SH7720 processor"
  274. select CPU_SH3
  275. select CPU_HAS_DSP
  276. select SYS_SUPPORTS_CMT
  277. help
  278. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  279. config CPU_SUBTYPE_SH7721
  280. bool "Support SH7721 processor"
  281. select CPU_SH3
  282. select CPU_HAS_DSP
  283. select SYS_SUPPORTS_CMT
  284. help
  285. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  286. # SH-4 Processor Support
  287. config CPU_SUBTYPE_SH7750
  288. bool "Support SH7750 processor"
  289. select CPU_SH4
  290. help
  291. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  292. config CPU_SUBTYPE_SH7091
  293. bool "Support SH7091 processor"
  294. select CPU_SH4
  295. help
  296. Select SH7091 if you have an SH-4 based Sega device (such as
  297. the Dreamcast, Naomi, and Naomi 2).
  298. config CPU_SUBTYPE_SH7750R
  299. bool "Support SH7750R processor"
  300. select CPU_SH4
  301. config CPU_SUBTYPE_SH7750S
  302. bool "Support SH7750S processor"
  303. select CPU_SH4
  304. config CPU_SUBTYPE_SH7751
  305. bool "Support SH7751 processor"
  306. select CPU_SH4
  307. help
  308. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  309. or if you have a HD6417751R CPU.
  310. config CPU_SUBTYPE_SH7751R
  311. bool "Support SH7751R processor"
  312. select CPU_SH4
  313. config CPU_SUBTYPE_SH7760
  314. bool "Support SH7760 processor"
  315. select CPU_SH4
  316. config CPU_SUBTYPE_SH4_202
  317. bool "Support SH4-202 processor"
  318. select CPU_SH4
  319. # SH-4A Processor Support
  320. config CPU_SUBTYPE_SH7723
  321. bool "Support SH7723 processor"
  322. select CPU_SH4A
  323. select CPU_SHX2
  324. select ARCH_SHMOBILE
  325. select ARCH_SPARSEMEM_ENABLE
  326. select SYS_SUPPORTS_CMT
  327. help
  328. Select SH7723 if you have an SH-MobileR2 CPU.
  329. config CPU_SUBTYPE_SH7724
  330. bool "Support SH7724 processor"
  331. select CPU_SH4A
  332. select CPU_SHX2
  333. select ARCH_SHMOBILE
  334. select ARCH_SPARSEMEM_ENABLE
  335. select SYS_SUPPORTS_CMT
  336. help
  337. Select SH7724 if you have an SH-MobileR2R CPU.
  338. config CPU_SUBTYPE_SH7757
  339. bool "Support SH7757 processor"
  340. select CPU_SH4A
  341. select CPU_SHX2
  342. help
  343. Select SH7757 if you have a SH4A SH7757 CPU.
  344. config CPU_SUBTYPE_SH7763
  345. bool "Support SH7763 processor"
  346. select CPU_SH4A
  347. help
  348. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  349. config CPU_SUBTYPE_SH7770
  350. bool "Support SH7770 processor"
  351. select CPU_SH4A
  352. config CPU_SUBTYPE_SH7780
  353. bool "Support SH7780 processor"
  354. select CPU_SH4A
  355. config CPU_SUBTYPE_SH7785
  356. bool "Support SH7785 processor"
  357. select CPU_SH4A
  358. select CPU_SHX2
  359. select ARCH_SPARSEMEM_ENABLE
  360. select SYS_SUPPORTS_NUMA
  361. config CPU_SUBTYPE_SH7786
  362. bool "Support SH7786 processor"
  363. select CPU_SH4A
  364. select CPU_SHX3
  365. select CPU_HAS_PTEAEX
  366. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  367. config CPU_SUBTYPE_SHX3
  368. bool "Support SH-X3 processor"
  369. select CPU_SH4A
  370. select CPU_SHX3
  371. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  372. # SH4AL-DSP Processor Support
  373. config CPU_SUBTYPE_SH7343
  374. bool "Support SH7343 processor"
  375. select CPU_SH4AL_DSP
  376. select ARCH_SHMOBILE
  377. select SYS_SUPPORTS_CMT
  378. config CPU_SUBTYPE_SH7722
  379. bool "Support SH7722 processor"
  380. select CPU_SH4AL_DSP
  381. select CPU_SHX2
  382. select ARCH_SHMOBILE
  383. select ARCH_SPARSEMEM_ENABLE
  384. select SYS_SUPPORTS_NUMA
  385. select SYS_SUPPORTS_CMT
  386. config CPU_SUBTYPE_SH7366
  387. bool "Support SH7366 processor"
  388. select CPU_SH4AL_DSP
  389. select CPU_SHX2
  390. select ARCH_SHMOBILE
  391. select ARCH_SPARSEMEM_ENABLE
  392. select SYS_SUPPORTS_NUMA
  393. select SYS_SUPPORTS_CMT
  394. endchoice
  395. endif
  396. if SUPERH64
  397. choice
  398. prompt "Processor sub-type selection"
  399. # SH-5 Processor Support
  400. config CPU_SUBTYPE_SH5_101
  401. bool "Support SH5-101 processor"
  402. select CPU_SH5
  403. config CPU_SUBTYPE_SH5_103
  404. bool "Support SH5-103 processor"
  405. select CPU_SH5
  406. endchoice
  407. endif
  408. source "arch/sh/mm/Kconfig"
  409. source "arch/sh/Kconfig.cpu"
  410. source "arch/sh/boards/Kconfig"
  411. menu "Timer and clock configuration"
  412. config SH_TIMER_TMU
  413. bool "TMU timer driver"
  414. depends on SYS_SUPPORTS_TMU
  415. default y
  416. help
  417. This enables the build of the TMU timer driver.
  418. config SH_TIMER_CMT
  419. bool "CMT timer driver"
  420. depends on SYS_SUPPORTS_CMT
  421. default y
  422. help
  423. This enables build of the CMT timer driver.
  424. config SH_TIMER_MTU2
  425. bool "MTU2 timer driver"
  426. depends on SYS_SUPPORTS_MTU2
  427. default y
  428. help
  429. This enables build of the MTU2 timer driver.
  430. config SH_PCLK_FREQ
  431. int "Peripheral clock frequency (in Hz)"
  432. depends on SH_CLK_CPG_LEGACY
  433. default "31250000" if CPU_SUBTYPE_SH7619
  434. default "33333333" if CPU_SUBTYPE_SH7770 || \
  435. CPU_SUBTYPE_SH7760 || \
  436. CPU_SUBTYPE_SH7705 || \
  437. CPU_SUBTYPE_SH7203 || \
  438. CPU_SUBTYPE_SH7206 || \
  439. CPU_SUBTYPE_SH7263 || \
  440. CPU_SUBTYPE_MXG
  441. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  442. default "66000000" if CPU_SUBTYPE_SH4_202
  443. default "50000000"
  444. help
  445. This option is used to specify the peripheral clock frequency.
  446. This is necessary for determining the reference clock value on
  447. platforms lacking an RTC.
  448. config SH_CLK_CPG
  449. def_bool y
  450. config SH_CLK_CPG_LEGACY
  451. depends on SH_CLK_CPG
  452. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  453. !CPU_SUBTYPE_SH7786
  454. config SH_CLK_MD
  455. int "CPU Mode Pin Setting"
  456. depends on CPU_SH2
  457. default 6 if CPU_SUBTYPE_SH7206
  458. default 5 if CPU_SUBTYPE_SH7619
  459. default 0
  460. help
  461. MD2 - MD0 pin setting.
  462. source "kernel/time/Kconfig"
  463. endmenu
  464. menu "CPU Frequency scaling"
  465. source "drivers/cpufreq/Kconfig"
  466. config SH_CPU_FREQ
  467. tristate "SuperH CPU Frequency driver"
  468. depends on CPU_FREQ
  469. select CPU_FREQ_TABLE
  470. help
  471. This adds the cpufreq driver for SuperH. Any CPU that supports
  472. clock rate rounding through the clock framework can use this
  473. driver. While it will make the kernel slightly larger, this is
  474. harmless for CPUs that don't support rate rounding. The driver
  475. will also generate a notice in the boot log before disabling
  476. itself if the CPU in question is not capable of rate rounding.
  477. For details, take a look at <file:Documentation/cpu-freq>.
  478. If unsure, say N.
  479. endmenu
  480. source "arch/sh/drivers/Kconfig"
  481. endmenu
  482. menu "Kernel features"
  483. source kernel/Kconfig.hz
  484. config KEXEC
  485. bool "kexec system call (EXPERIMENTAL)"
  486. depends on SUPERH32 && EXPERIMENTAL && MMU
  487. help
  488. kexec is a system call that implements the ability to shutdown your
  489. current kernel, and to start another kernel. It is like a reboot
  490. but it is independent of the system firmware. And like a reboot
  491. you can start any kernel with it, not just Linux.
  492. The name comes from the similarity to the exec system call.
  493. It is an ongoing process to be certain the hardware in a machine
  494. is properly shutdown, so do not be surprised if this code does not
  495. initially work for you. It may help to enable device hotplugging
  496. support. As of this writing the exact hardware interface is
  497. strongly in flux, so no good recommendation can be made.
  498. config CRASH_DUMP
  499. bool "kernel crash dumps (EXPERIMENTAL)"
  500. depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
  501. help
  502. Generate crash dump after being started by kexec.
  503. This should be normally only set in special crash dump kernels
  504. which are loaded in the main kernel with kexec-tools into
  505. a specially reserved region and then later executed after
  506. a crash by kdump/kexec. The crash dump kernel must be compiled
  507. to a memory address not used by the main kernel using
  508. MEMORY_START.
  509. For more details see Documentation/kdump/kdump.txt
  510. config KEXEC_JUMP
  511. bool "kexec jump (EXPERIMENTAL)"
  512. depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
  513. help
  514. Jump between original kernel and kexeced kernel and invoke
  515. code via KEXEC
  516. config SECCOMP
  517. bool "Enable seccomp to safely compute untrusted bytecode"
  518. depends on PROC_FS
  519. help
  520. This kernel feature is useful for number crunching applications
  521. that may need to compute untrusted bytecode during their
  522. execution. By using pipes or other transports made available to
  523. the process as file descriptors supporting the read/write
  524. syscalls, it's possible to isolate those applications in
  525. their own address space using seccomp. Once seccomp is
  526. enabled via prctl, it cannot be disabled and the task is only
  527. allowed to execute a few safe syscalls defined by each seccomp
  528. mode.
  529. If unsure, say N.
  530. config SMP
  531. bool "Symmetric multi-processing support"
  532. depends on SYS_SUPPORTS_SMP
  533. select USE_GENERIC_SMP_HELPERS
  534. ---help---
  535. This enables support for systems with more than one CPU. If you have
  536. a system with only one CPU, like most personal computers, say N. If
  537. you have a system with more than one CPU, say Y.
  538. If you say N here, the kernel will run on single and multiprocessor
  539. machines, but will use only one CPU of a multiprocessor machine. If
  540. you say Y here, the kernel will run on many, but not all,
  541. singleprocessor machines. On a singleprocessor machine, the kernel
  542. will run faster if you say N here.
  543. People using multiprocessor machines who say Y here should also say
  544. Y to "Enhanced Real Time Clock Support", below.
  545. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  546. available at <http://www.tldp.org/docs.html#howto>.
  547. If you don't know what to do here, say N.
  548. config NR_CPUS
  549. int "Maximum number of CPUs (2-32)"
  550. range 2 32
  551. depends on SMP
  552. default "4" if CPU_SUBTYPE_SHX3
  553. default "2"
  554. help
  555. This allows you to specify the maximum number of CPUs which this
  556. kernel will support. The maximum supported value is 32 and the
  557. minimum value which makes sense is 2.
  558. This is purely to save memory - each supported CPU adds
  559. approximately eight kilobytes to the kernel image.
  560. config HOTPLUG_CPU
  561. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  562. depends on SMP && HOTPLUG && EXPERIMENTAL
  563. help
  564. Say Y here to experiment with turning CPUs off and on. CPUs
  565. can be controlled through /sys/devices/system/cpu.
  566. source "kernel/Kconfig.preempt"
  567. config GUSA
  568. def_bool y
  569. depends on !SMP && SUPERH32
  570. help
  571. This enables support for gUSA (general UserSpace Atomicity).
  572. This is the default implementation for both UP and non-ll/sc
  573. CPUs, and is used by the libc, amongst others.
  574. For additional information, design information can be found
  575. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  576. This should only be disabled for special cases where alternate
  577. atomicity implementations exist.
  578. config GUSA_RB
  579. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  580. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  581. help
  582. Enabling this option will allow the kernel to implement some
  583. atomic operations using a software implementation of load-locked/
  584. store-conditional (LLSC). On machines which do not have hardware
  585. LLSC, this should be more efficient than the other alternative of
  586. disabling interrupts around the atomic sequence.
  587. config HW_PERF_EVENTS
  588. bool "Enable hardware performance counter support for perf events"
  589. depends on PERF_EVENTS && CPU_HAS_PMU
  590. default y
  591. help
  592. Enable hardware performance counter support for perf events. If
  593. disabled, perf events will use software events only.
  594. source "drivers/sh/Kconfig"
  595. endmenu
  596. menu "Boot options"
  597. config ZERO_PAGE_OFFSET
  598. hex
  599. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  600. SH_7751_SOLUTION_ENGINE
  601. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  602. default "0x00002000" if PAGE_SIZE_8KB
  603. default "0x00001000"
  604. help
  605. This sets the default offset of zero page.
  606. config BOOT_LINK_OFFSET
  607. hex
  608. default "0x00210000" if SH_SHMIN
  609. default "0x00400000" if SH_CAYMAN
  610. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  611. default "0x009e0000" if SH_TITAN
  612. default "0x01800000" if SH_SDK7780
  613. default "0x02000000" if SH_EDOSK7760
  614. default "0x00800000"
  615. help
  616. This option allows you to set the link address offset of the zImage.
  617. This can be useful if you are on a board which has a small amount of
  618. memory.
  619. config ENTRY_OFFSET
  620. hex
  621. default "0x00001000" if PAGE_SIZE_4KB
  622. default "0x00002000" if PAGE_SIZE_8KB
  623. default "0x00004000" if PAGE_SIZE_16KB
  624. default "0x00010000" if PAGE_SIZE_64KB
  625. default "0x00000000"
  626. config ROMIMAGE_MMCIF
  627. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  628. depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
  629. help
  630. Say Y here to include experimental MMCIF loading code in
  631. romImage. With this enabled it is possible to write the romImage
  632. kernel image to an MMC card and boot the kernel straight from
  633. the reset vector. At reset the processor Mask ROM will load the
  634. first part of the romImage which in turn loads the rest the kernel
  635. image to RAM using the MMCIF hardware block.
  636. choice
  637. prompt "Kernel command line"
  638. optional
  639. default CMDLINE_OVERWRITE
  640. help
  641. Setting this option allows the kernel command line arguments
  642. to be set.
  643. config CMDLINE_OVERWRITE
  644. bool "Overwrite bootloader kernel arguments"
  645. help
  646. Given string will overwrite any arguments passed in by
  647. a bootloader.
  648. config CMDLINE_EXTEND
  649. bool "Extend bootloader kernel arguments"
  650. help
  651. Given string will be concatenated with arguments passed in
  652. by a bootloader.
  653. endchoice
  654. config CMDLINE
  655. string "Kernel command line arguments string"
  656. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  657. default "console=ttySC1,115200"
  658. endmenu
  659. menu "Bus options"
  660. config SUPERHYWAY
  661. tristate "SuperHyway Bus support"
  662. depends on CPU_SUBTYPE_SH4_202
  663. config MAPLE
  664. bool "Maple Bus support"
  665. depends on SH_DREAMCAST
  666. help
  667. The Maple Bus is SEGA's serial communication bus for peripherals
  668. on the Dreamcast. Without this bus support you won't be able to
  669. get your Dreamcast keyboard etc to work, so most users
  670. probably want to say 'Y' here, unless you are only using the
  671. Dreamcast with a serial line terminal or a remote network
  672. connection.
  673. config PCI
  674. bool "PCI support"
  675. depends on SYS_SUPPORTS_PCI
  676. select PCI_DOMAINS
  677. help
  678. Find out whether you have a PCI motherboard. PCI is the name of a
  679. bus system, i.e. the way the CPU talks to the other stuff inside
  680. your box. If you have PCI, say Y, otherwise N.
  681. config PCI_DOMAINS
  682. bool
  683. source "drivers/pci/pcie/Kconfig"
  684. source "drivers/pci/Kconfig"
  685. source "drivers/pcmcia/Kconfig"
  686. source "drivers/pci/hotplug/Kconfig"
  687. endmenu
  688. menu "Executable file formats"
  689. source "fs/Kconfig.binfmt"
  690. endmenu
  691. menu "Power management options (EXPERIMENTAL)"
  692. depends on EXPERIMENTAL
  693. source "kernel/power/Kconfig"
  694. source "drivers/cpuidle/Kconfig"
  695. endmenu
  696. source "net/Kconfig"
  697. source "drivers/Kconfig"
  698. source "fs/Kconfig"
  699. source "arch/sh/Kconfig.debug"
  700. source "security/Kconfig"
  701. source "crypto/Kconfig"
  702. menuconfig VIRTUALIZATION
  703. bool "Virtualization"
  704. default n
  705. ---help---
  706. Say Y here to get to see options for using your Linux host to run other
  707. operating systems inside virtual machines (guests).
  708. This option alone does not add any kernel code.
  709. If you say N, all options in this submenu will be skipped and disabled.
  710. if VIRTUALIZATION
  711. source drivers/virtio/Kconfig
  712. endif # VIRTUALIZATION
  713. source "lib/Kconfig"