Kconfig 21 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918
  1. config SUPERH
  2. def_bool y
  3. select EXPERT
  4. select CLKDEV_LOOKUP
  5. select HAVE_IDE if HAS_IOPORT
  6. select HAVE_MEMBLOCK
  7. select HAVE_OPROFILE
  8. select HAVE_GENERIC_DMA_COHERENT
  9. select HAVE_ARCH_TRACEHOOK
  10. select HAVE_DMA_API_DEBUG
  11. select HAVE_DMA_ATTRS
  12. select HAVE_IRQ_WORK
  13. select HAVE_PERF_EVENTS
  14. select PERF_USE_VMALLOC
  15. select HAVE_KERNEL_GZIP
  16. select HAVE_KERNEL_BZIP2
  17. select HAVE_KERNEL_LZMA
  18. select HAVE_KERNEL_XZ
  19. select HAVE_KERNEL_LZO
  20. select HAVE_SYSCALL_TRACEPOINTS
  21. select HAVE_REGS_AND_STACK_ACCESS_API
  22. select HAVE_GENERIC_HARDIRQS
  23. select HAVE_SPARSE_IRQ
  24. select IRQ_FORCED_THREADING
  25. select RTC_LIB
  26. select GENERIC_ATOMIC64
  27. select GENERIC_IRQ_SHOW
  28. select ARCH_NO_SYSDEV_OPS
  29. help
  30. The SuperH is a RISC processor targeted for use in embedded systems
  31. and consumer electronics; it was also used in the Sega Dreamcast
  32. gaming console. The SuperH port has a home page at
  33. <http://www.linux-sh.org/>.
  34. config SUPERH32
  35. def_bool ARCH = "sh"
  36. select HAVE_KPROBES
  37. select HAVE_KRETPROBES
  38. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  39. select HAVE_FUNCTION_TRACER
  40. select HAVE_FTRACE_MCOUNT_RECORD
  41. select HAVE_DYNAMIC_FTRACE
  42. select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  43. select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  44. select HAVE_FUNCTION_GRAPH_TRACER
  45. select HAVE_ARCH_KGDB
  46. select HAVE_HW_BREAKPOINT
  47. select HAVE_MIXED_BREAKPOINTS_REGS
  48. select PERF_EVENTS
  49. select ARCH_HIBERNATION_POSSIBLE if MMU
  50. select SPARSE_IRQ
  51. config SUPERH64
  52. def_bool ARCH = "sh64"
  53. config ARCH_DEFCONFIG
  54. string
  55. default "arch/sh/configs/shx3_defconfig" if SUPERH32
  56. default "arch/sh/configs/cayman_defconfig" if SUPERH64
  57. config RWSEM_GENERIC_SPINLOCK
  58. def_bool y
  59. config RWSEM_XCHGADD_ALGORITHM
  60. bool
  61. config GENERIC_BUG
  62. def_bool y
  63. depends on BUG && SUPERH32
  64. config GENERIC_CSUM
  65. def_bool y
  66. depends on SUPERH64
  67. config GENERIC_FIND_NEXT_BIT
  68. def_bool y
  69. config GENERIC_FIND_BIT_LE
  70. def_bool y
  71. config GENERIC_HWEIGHT
  72. def_bool y
  73. config IRQ_PER_CPU
  74. def_bool y
  75. config GENERIC_GPIO
  76. def_bool n
  77. config GENERIC_CALIBRATE_DELAY
  78. bool
  79. config GENERIC_IOMAP
  80. bool
  81. config GENERIC_CLOCKEVENTS
  82. def_bool y
  83. config GENERIC_CLOCKEVENTS_BROADCAST
  84. bool
  85. config GENERIC_CMOS_UPDATE
  86. def_bool y
  87. depends on SH_SH03 || SH_DREAMCAST
  88. config GENERIC_LOCKBREAK
  89. def_bool y
  90. depends on SMP && PREEMPT
  91. config SYS_SUPPORTS_PM
  92. bool
  93. depends on !SMP
  94. config ARCH_SUSPEND_POSSIBLE
  95. def_bool n
  96. config ARCH_HIBERNATION_POSSIBLE
  97. def_bool n
  98. config SYS_SUPPORTS_APM_EMULATION
  99. bool
  100. select ARCH_SUSPEND_POSSIBLE
  101. config SYS_SUPPORTS_HUGETLBFS
  102. bool
  103. config SYS_SUPPORTS_SMP
  104. bool
  105. config SYS_SUPPORTS_NUMA
  106. bool
  107. config SYS_SUPPORTS_PCI
  108. bool
  109. config SYS_SUPPORTS_CMT
  110. bool
  111. config SYS_SUPPORTS_MTU2
  112. bool
  113. config SYS_SUPPORTS_TMU
  114. bool
  115. config STACKTRACE_SUPPORT
  116. def_bool y
  117. config LOCKDEP_SUPPORT
  118. def_bool y
  119. config HAVE_LATENCYTOP_SUPPORT
  120. def_bool y
  121. config ARCH_HAS_ILOG2_U32
  122. def_bool n
  123. config ARCH_HAS_ILOG2_U64
  124. def_bool n
  125. config ARCH_NO_VIRT_TO_BUS
  126. def_bool y
  127. config ARCH_HAS_DEFAULT_IDLE
  128. def_bool y
  129. config ARCH_HAS_CPU_IDLE_WAIT
  130. def_bool y
  131. config NO_IOPORT
  132. def_bool !PCI
  133. depends on !SH_CAYMAN && !SH_SH4202_MICRODEV
  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. select UNCACHED_MAPPING
  156. config CPU_SH3
  157. bool
  158. select CPU_HAS_INTEVT
  159. select CPU_HAS_SR_RB
  160. select SYS_SUPPORTS_TMU
  161. config CPU_SH4
  162. bool
  163. select CPU_HAS_INTEVT
  164. select CPU_HAS_SR_RB
  165. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  166. select SYS_SUPPORTS_TMU
  167. select SYS_SUPPORTS_HUGETLBFS if MMU
  168. config CPU_SH4A
  169. bool
  170. select CPU_SH4
  171. config CPU_SH4AL_DSP
  172. bool
  173. select CPU_SH4A
  174. select CPU_HAS_DSP
  175. config CPU_SH5
  176. bool
  177. select CPU_HAS_FPU
  178. select SYS_SUPPORTS_TMU
  179. select SYS_SUPPORTS_HUGETLBFS if MMU
  180. config CPU_SHX2
  181. bool
  182. config CPU_SHX3
  183. bool
  184. select DMA_COHERENT
  185. select SYS_SUPPORTS_SMP
  186. select SYS_SUPPORTS_NUMA
  187. config ARCH_SHMOBILE
  188. bool
  189. select ARCH_SUSPEND_POSSIBLE
  190. select PM
  191. select PM_RUNTIME
  192. config CPU_HAS_PMU
  193. depends on CPU_SH4 || CPU_SH4A
  194. default y
  195. bool
  196. if SUPERH32
  197. choice
  198. prompt "Processor sub-type selection"
  199. #
  200. # Processor subtypes
  201. #
  202. # SH-2 Processor Support
  203. config CPU_SUBTYPE_SH7619
  204. bool "Support SH7619 processor"
  205. select CPU_SH2
  206. select SYS_SUPPORTS_CMT
  207. # SH-2A Processor Support
  208. config CPU_SUBTYPE_SH7201
  209. bool "Support SH7201 processor"
  210. select CPU_SH2A
  211. select CPU_HAS_FPU
  212. select SYS_SUPPORTS_MTU2
  213. config CPU_SUBTYPE_SH7203
  214. bool "Support SH7203 processor"
  215. select CPU_SH2A
  216. select CPU_HAS_FPU
  217. select SYS_SUPPORTS_CMT
  218. select SYS_SUPPORTS_MTU2
  219. select ARCH_WANT_OPTIONAL_GPIOLIB
  220. config CPU_SUBTYPE_SH7206
  221. bool "Support SH7206 processor"
  222. select CPU_SH2A
  223. select SYS_SUPPORTS_CMT
  224. select SYS_SUPPORTS_MTU2
  225. config CPU_SUBTYPE_SH7263
  226. bool "Support SH7263 processor"
  227. select CPU_SH2A
  228. select CPU_HAS_FPU
  229. select SYS_SUPPORTS_CMT
  230. select SYS_SUPPORTS_MTU2
  231. config CPU_SUBTYPE_MXG
  232. bool "Support MX-G processor"
  233. select CPU_SH2A
  234. select SYS_SUPPORTS_MTU2
  235. help
  236. Select MX-G if running on an R8A03022BG part.
  237. # SH-3 Processor Support
  238. config CPU_SUBTYPE_SH7705
  239. bool "Support SH7705 processor"
  240. select CPU_SH3
  241. config CPU_SUBTYPE_SH7706
  242. bool "Support SH7706 processor"
  243. select CPU_SH3
  244. help
  245. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  246. config CPU_SUBTYPE_SH7707
  247. bool "Support SH7707 processor"
  248. select CPU_SH3
  249. help
  250. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  251. config CPU_SUBTYPE_SH7708
  252. bool "Support SH7708 processor"
  253. select CPU_SH3
  254. help
  255. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  256. if you have a 100 Mhz SH-3 HD6417708R CPU.
  257. config CPU_SUBTYPE_SH7709
  258. bool "Support SH7709 processor"
  259. select CPU_SH3
  260. help
  261. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  262. config CPU_SUBTYPE_SH7710
  263. bool "Support SH7710 processor"
  264. select CPU_SH3
  265. select CPU_HAS_DSP
  266. help
  267. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  268. config CPU_SUBTYPE_SH7712
  269. bool "Support SH7712 processor"
  270. select CPU_SH3
  271. select CPU_HAS_DSP
  272. help
  273. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  274. config CPU_SUBTYPE_SH7720
  275. bool "Support SH7720 processor"
  276. select CPU_SH3
  277. select CPU_HAS_DSP
  278. select SYS_SUPPORTS_CMT
  279. select ARCH_WANT_OPTIONAL_GPIOLIB
  280. select USB_ARCH_HAS_OHCI
  281. help
  282. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  283. config CPU_SUBTYPE_SH7721
  284. bool "Support SH7721 processor"
  285. select CPU_SH3
  286. select CPU_HAS_DSP
  287. select SYS_SUPPORTS_CMT
  288. select USB_ARCH_HAS_OHCI
  289. help
  290. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  291. # SH-4 Processor Support
  292. config CPU_SUBTYPE_SH7750
  293. bool "Support SH7750 processor"
  294. select CPU_SH4
  295. help
  296. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  297. config CPU_SUBTYPE_SH7091
  298. bool "Support SH7091 processor"
  299. select CPU_SH4
  300. help
  301. Select SH7091 if you have an SH-4 based Sega device (such as
  302. the Dreamcast, Naomi, and Naomi 2).
  303. config CPU_SUBTYPE_SH7750R
  304. bool "Support SH7750R processor"
  305. select CPU_SH4
  306. config CPU_SUBTYPE_SH7750S
  307. bool "Support SH7750S processor"
  308. select CPU_SH4
  309. config CPU_SUBTYPE_SH7751
  310. bool "Support SH7751 processor"
  311. select CPU_SH4
  312. help
  313. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  314. or if you have a HD6417751R CPU.
  315. config CPU_SUBTYPE_SH7751R
  316. bool "Support SH7751R processor"
  317. select CPU_SH4
  318. config CPU_SUBTYPE_SH7760
  319. bool "Support SH7760 processor"
  320. select CPU_SH4
  321. config CPU_SUBTYPE_SH4_202
  322. bool "Support SH4-202 processor"
  323. select CPU_SH4
  324. # SH-4A Processor Support
  325. config CPU_SUBTYPE_SH7723
  326. bool "Support SH7723 processor"
  327. select CPU_SH4A
  328. select CPU_SHX2
  329. select ARCH_SHMOBILE
  330. select ARCH_SPARSEMEM_ENABLE
  331. select SYS_SUPPORTS_CMT
  332. select ARCH_WANT_OPTIONAL_GPIOLIB
  333. help
  334. Select SH7723 if you have an SH-MobileR2 CPU.
  335. config CPU_SUBTYPE_SH7724
  336. bool "Support SH7724 processor"
  337. select CPU_SH4A
  338. select CPU_SHX2
  339. select ARCH_SHMOBILE
  340. select ARCH_SPARSEMEM_ENABLE
  341. select SYS_SUPPORTS_CMT
  342. select ARCH_WANT_OPTIONAL_GPIOLIB
  343. help
  344. Select SH7724 if you have an SH-MobileR2R CPU.
  345. config CPU_SUBTYPE_SH7757
  346. bool "Support SH7757 processor"
  347. select CPU_SH4A
  348. select CPU_SHX2
  349. select ARCH_WANT_OPTIONAL_GPIOLIB
  350. select USB_ARCH_HAS_OHCI
  351. select USB_ARCH_HAS_EHCI
  352. help
  353. Select SH7757 if you have a SH4A SH7757 CPU.
  354. config CPU_SUBTYPE_SH7763
  355. bool "Support SH7763 processor"
  356. select CPU_SH4A
  357. select USB_ARCH_HAS_OHCI
  358. help
  359. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  360. config CPU_SUBTYPE_SH7770
  361. bool "Support SH7770 processor"
  362. select CPU_SH4A
  363. config CPU_SUBTYPE_SH7780
  364. bool "Support SH7780 processor"
  365. select CPU_SH4A
  366. config CPU_SUBTYPE_SH7785
  367. bool "Support SH7785 processor"
  368. select CPU_SH4A
  369. select CPU_SHX2
  370. select ARCH_SPARSEMEM_ENABLE
  371. select SYS_SUPPORTS_NUMA
  372. select ARCH_WANT_OPTIONAL_GPIOLIB
  373. config CPU_SUBTYPE_SH7786
  374. bool "Support SH7786 processor"
  375. select CPU_SH4A
  376. select CPU_SHX3
  377. select CPU_HAS_PTEAEX
  378. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  379. select ARCH_WANT_OPTIONAL_GPIOLIB
  380. select USB_ARCH_HAS_OHCI
  381. select USB_ARCH_HAS_EHCI
  382. config CPU_SUBTYPE_SHX3
  383. bool "Support SH-X3 processor"
  384. select CPU_SH4A
  385. select CPU_SHX3
  386. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  387. select ARCH_REQUIRE_GPIOLIB
  388. # SH4AL-DSP Processor Support
  389. config CPU_SUBTYPE_SH7343
  390. bool "Support SH7343 processor"
  391. select CPU_SH4AL_DSP
  392. select ARCH_SHMOBILE
  393. select SYS_SUPPORTS_CMT
  394. config CPU_SUBTYPE_SH7722
  395. bool "Support SH7722 processor"
  396. select CPU_SH4AL_DSP
  397. select CPU_SHX2
  398. select ARCH_SHMOBILE
  399. select ARCH_SPARSEMEM_ENABLE
  400. select SYS_SUPPORTS_NUMA
  401. select SYS_SUPPORTS_CMT
  402. select ARCH_WANT_OPTIONAL_GPIOLIB
  403. config CPU_SUBTYPE_SH7366
  404. bool "Support SH7366 processor"
  405. select CPU_SH4AL_DSP
  406. select CPU_SHX2
  407. select ARCH_SHMOBILE
  408. select ARCH_SPARSEMEM_ENABLE
  409. select SYS_SUPPORTS_NUMA
  410. select SYS_SUPPORTS_CMT
  411. endchoice
  412. endif
  413. if SUPERH64
  414. choice
  415. prompt "Processor sub-type selection"
  416. # SH-5 Processor Support
  417. config CPU_SUBTYPE_SH5_101
  418. bool "Support SH5-101 processor"
  419. select CPU_SH5
  420. config CPU_SUBTYPE_SH5_103
  421. bool "Support SH5-103 processor"
  422. select CPU_SH5
  423. endchoice
  424. endif
  425. source "arch/sh/mm/Kconfig"
  426. source "arch/sh/Kconfig.cpu"
  427. source "arch/sh/boards/Kconfig"
  428. menu "Timer and clock configuration"
  429. config SH_TIMER_TMU
  430. bool "TMU timer driver"
  431. depends on SYS_SUPPORTS_TMU
  432. default y
  433. help
  434. This enables the build of the TMU timer driver.
  435. config SH_TIMER_CMT
  436. bool "CMT timer driver"
  437. depends on SYS_SUPPORTS_CMT
  438. default y
  439. help
  440. This enables build of the CMT timer driver.
  441. config SH_TIMER_MTU2
  442. bool "MTU2 timer driver"
  443. depends on SYS_SUPPORTS_MTU2
  444. default y
  445. help
  446. This enables build of the MTU2 timer driver.
  447. config SH_PCLK_FREQ
  448. int "Peripheral clock frequency (in Hz)"
  449. depends on SH_CLK_CPG_LEGACY
  450. default "31250000" if CPU_SUBTYPE_SH7619
  451. default "33333333" if CPU_SUBTYPE_SH7770 || \
  452. CPU_SUBTYPE_SH7760 || \
  453. CPU_SUBTYPE_SH7705 || \
  454. CPU_SUBTYPE_SH7203 || \
  455. CPU_SUBTYPE_SH7206 || \
  456. CPU_SUBTYPE_SH7263 || \
  457. CPU_SUBTYPE_MXG
  458. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  459. default "66000000" if CPU_SUBTYPE_SH4_202
  460. default "50000000"
  461. help
  462. This option is used to specify the peripheral clock frequency.
  463. This is necessary for determining the reference clock value on
  464. platforms lacking an RTC.
  465. config SH_CLK_CPG
  466. def_bool y
  467. config SH_CLK_CPG_LEGACY
  468. depends on SH_CLK_CPG
  469. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  470. !CPU_SHX3 && !CPU_SUBTYPE_SH7757
  471. source "kernel/time/Kconfig"
  472. endmenu
  473. menu "CPU Frequency scaling"
  474. source "drivers/cpufreq/Kconfig"
  475. config SH_CPU_FREQ
  476. tristate "SuperH CPU Frequency driver"
  477. depends on CPU_FREQ
  478. select CPU_FREQ_TABLE
  479. help
  480. This adds the cpufreq driver for SuperH. Any CPU that supports
  481. clock rate rounding through the clock framework can use this
  482. driver. While it will make the kernel slightly larger, this is
  483. harmless for CPUs that don't support rate rounding. The driver
  484. will also generate a notice in the boot log before disabling
  485. itself if the CPU in question is not capable of rate rounding.
  486. For details, take a look at <file:Documentation/cpu-freq>.
  487. If unsure, say N.
  488. endmenu
  489. source "arch/sh/drivers/Kconfig"
  490. endmenu
  491. menu "Kernel features"
  492. source kernel/Kconfig.hz
  493. config KEXEC
  494. bool "kexec system call (EXPERIMENTAL)"
  495. depends on SUPERH32 && EXPERIMENTAL && MMU
  496. help
  497. kexec is a system call that implements the ability to shutdown your
  498. current kernel, and to start another kernel. It is like a reboot
  499. but it is independent of the system firmware. And like a reboot
  500. you can start any kernel with it, not just Linux.
  501. The name comes from the similarity to the exec system call.
  502. It is an ongoing process to be certain the hardware in a machine
  503. is properly shutdown, so do not be surprised if this code does not
  504. initially work for you. It may help to enable device hotplugging
  505. support. As of this writing the exact hardware interface is
  506. strongly in flux, so no good recommendation can be made.
  507. config CRASH_DUMP
  508. bool "kernel crash dumps (EXPERIMENTAL)"
  509. depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
  510. help
  511. Generate crash dump after being started by kexec.
  512. This should be normally only set in special crash dump kernels
  513. which are loaded in the main kernel with kexec-tools into
  514. a specially reserved region and then later executed after
  515. a crash by kdump/kexec. The crash dump kernel must be compiled
  516. to a memory address not used by the main kernel using
  517. MEMORY_START.
  518. For more details see Documentation/kdump/kdump.txt
  519. config KEXEC_JUMP
  520. bool "kexec jump (EXPERIMENTAL)"
  521. depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
  522. help
  523. Jump between original kernel and kexeced kernel and invoke
  524. code via KEXEC
  525. config SECCOMP
  526. bool "Enable seccomp to safely compute untrusted bytecode"
  527. depends on PROC_FS
  528. help
  529. This kernel feature is useful for number crunching applications
  530. that may need to compute untrusted bytecode during their
  531. execution. By using pipes or other transports made available to
  532. the process as file descriptors supporting the read/write
  533. syscalls, it's possible to isolate those applications in
  534. their own address space using seccomp. Once seccomp is
  535. enabled via prctl, it cannot be disabled and the task is only
  536. allowed to execute a few safe syscalls defined by each seccomp
  537. mode.
  538. If unsure, say N.
  539. config SMP
  540. bool "Symmetric multi-processing support"
  541. depends on SYS_SUPPORTS_SMP
  542. select USE_GENERIC_SMP_HELPERS
  543. ---help---
  544. This enables support for systems with more than one CPU. If you have
  545. a system with only one CPU, like most personal computers, say N. If
  546. you have a system with more than one CPU, say Y.
  547. If you say N here, the kernel will run on single and multiprocessor
  548. machines, but will use only one CPU of a multiprocessor machine. If
  549. you say Y here, the kernel will run on many, but not all,
  550. singleprocessor machines. On a singleprocessor machine, the kernel
  551. will run faster if you say N here.
  552. People using multiprocessor machines who say Y here should also say
  553. Y to "Enhanced Real Time Clock Support", below.
  554. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  555. available at <http://www.tldp.org/docs.html#howto>.
  556. If you don't know what to do here, say N.
  557. config NR_CPUS
  558. int "Maximum number of CPUs (2-32)"
  559. range 2 32
  560. depends on SMP
  561. default "4" if CPU_SUBTYPE_SHX3
  562. default "2"
  563. help
  564. This allows you to specify the maximum number of CPUs which this
  565. kernel will support. The maximum supported value is 32 and the
  566. minimum value which makes sense is 2.
  567. This is purely to save memory - each supported CPU adds
  568. approximately eight kilobytes to the kernel image.
  569. config HOTPLUG_CPU
  570. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  571. depends on SMP && HOTPLUG && EXPERIMENTAL
  572. help
  573. Say Y here to experiment with turning CPUs off and on. CPUs
  574. can be controlled through /sys/devices/system/cpu.
  575. source "kernel/Kconfig.preempt"
  576. config GUSA
  577. def_bool y
  578. depends on !SMP && SUPERH32
  579. help
  580. This enables support for gUSA (general UserSpace Atomicity).
  581. This is the default implementation for both UP and non-ll/sc
  582. CPUs, and is used by the libc, amongst others.
  583. For additional information, design information can be found
  584. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  585. This should only be disabled for special cases where alternate
  586. atomicity implementations exist.
  587. config GUSA_RB
  588. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  589. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  590. help
  591. Enabling this option will allow the kernel to implement some
  592. atomic operations using a software implementation of load-locked/
  593. store-conditional (LLSC). On machines which do not have hardware
  594. LLSC, this should be more efficient than the other alternative of
  595. disabling interrupts around the atomic sequence.
  596. config HW_PERF_EVENTS
  597. bool "Enable hardware performance counter support for perf events"
  598. depends on PERF_EVENTS && CPU_HAS_PMU
  599. default y
  600. help
  601. Enable hardware performance counter support for perf events. If
  602. disabled, perf events will use software events only.
  603. source "drivers/sh/Kconfig"
  604. endmenu
  605. menu "Boot options"
  606. config ZERO_PAGE_OFFSET
  607. hex
  608. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  609. SH_7751_SOLUTION_ENGINE
  610. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  611. default "0x00002000" if PAGE_SIZE_8KB
  612. default "0x00001000"
  613. help
  614. This sets the default offset of zero page.
  615. config BOOT_LINK_OFFSET
  616. hex
  617. default "0x00210000" if SH_SHMIN
  618. default "0x00400000" if SH_CAYMAN
  619. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  620. default "0x009e0000" if SH_TITAN
  621. default "0x01800000" if SH_SDK7780
  622. default "0x02000000" if SH_EDOSK7760
  623. default "0x00800000"
  624. help
  625. This option allows you to set the link address offset of the zImage.
  626. This can be useful if you are on a board which has a small amount of
  627. memory.
  628. config ENTRY_OFFSET
  629. hex
  630. default "0x00001000" if PAGE_SIZE_4KB
  631. default "0x00002000" if PAGE_SIZE_8KB
  632. default "0x00004000" if PAGE_SIZE_16KB
  633. default "0x00010000" if PAGE_SIZE_64KB
  634. default "0x00000000"
  635. config ROMIMAGE_MMCIF
  636. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  637. depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
  638. help
  639. Say Y here to include experimental MMCIF loading code in
  640. romImage. With this enabled it is possible to write the romImage
  641. kernel image to an MMC card and boot the kernel straight from
  642. the reset vector. At reset the processor Mask ROM will load the
  643. first part of the romImage which in turn loads the rest the kernel
  644. image to RAM using the MMCIF hardware block.
  645. choice
  646. prompt "Kernel command line"
  647. optional
  648. default CMDLINE_OVERWRITE
  649. help
  650. Setting this option allows the kernel command line arguments
  651. to be set.
  652. config CMDLINE_OVERWRITE
  653. bool "Overwrite bootloader kernel arguments"
  654. help
  655. Given string will overwrite any arguments passed in by
  656. a bootloader.
  657. config CMDLINE_EXTEND
  658. bool "Extend bootloader kernel arguments"
  659. help
  660. Given string will be concatenated with arguments passed in
  661. by a bootloader.
  662. endchoice
  663. config CMDLINE
  664. string "Kernel command line arguments string"
  665. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  666. default "console=ttySC1,115200"
  667. endmenu
  668. menu "Bus options"
  669. config SUPERHYWAY
  670. tristate "SuperHyway Bus support"
  671. depends on CPU_SUBTYPE_SH4_202
  672. config MAPLE
  673. bool "Maple Bus support"
  674. depends on SH_DREAMCAST
  675. help
  676. The Maple Bus is SEGA's serial communication bus for peripherals
  677. on the Dreamcast. Without this bus support you won't be able to
  678. get your Dreamcast keyboard etc to work, so most users
  679. probably want to say 'Y' here, unless you are only using the
  680. Dreamcast with a serial line terminal or a remote network
  681. connection.
  682. config PCI
  683. bool "PCI support"
  684. depends on SYS_SUPPORTS_PCI
  685. select PCI_DOMAINS
  686. help
  687. Find out whether you have a PCI motherboard. PCI is the name of a
  688. bus system, i.e. the way the CPU talks to the other stuff inside
  689. your box. If you have PCI, say Y, otherwise N.
  690. config PCI_DOMAINS
  691. bool
  692. source "drivers/pci/pcie/Kconfig"
  693. source "drivers/pci/Kconfig"
  694. source "drivers/pcmcia/Kconfig"
  695. source "drivers/pci/hotplug/Kconfig"
  696. endmenu
  697. menu "Executable file formats"
  698. source "fs/Kconfig.binfmt"
  699. endmenu
  700. menu "Power management options (EXPERIMENTAL)"
  701. depends on EXPERIMENTAL
  702. source "kernel/power/Kconfig"
  703. source "drivers/cpuidle/Kconfig"
  704. endmenu
  705. source "net/Kconfig"
  706. source "drivers/Kconfig"
  707. source "fs/Kconfig"
  708. source "arch/sh/Kconfig.debug"
  709. source "security/Kconfig"
  710. source "crypto/Kconfig"
  711. menuconfig VIRTUALIZATION
  712. bool "Virtualization"
  713. default n
  714. ---help---
  715. Say Y here to get to see options for using your Linux host to run other
  716. operating systems inside virtual machines (guests).
  717. This option alone does not add any kernel code.
  718. If you say N, all options in this submenu will be skipped and disabled.
  719. if VIRTUALIZATION
  720. source drivers/virtio/Kconfig
  721. endif # VIRTUALIZATION
  722. source "lib/Kconfig"