Kconfig 21 KB

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  1. config SUPERH
  2. def_bool y
  3. select ARCH_MIGHT_HAVE_PC_PARPORT
  4. select EXPERT
  5. select CLKDEV_LOOKUP
  6. select HAVE_IDE if HAS_IOPORT
  7. select HAVE_MEMBLOCK
  8. select HAVE_MEMBLOCK_NODE_MAP
  9. select ARCH_DISCARD_MEMBLOCK
  10. select HAVE_OPROFILE
  11. select HAVE_GENERIC_DMA_COHERENT
  12. select HAVE_ARCH_TRACEHOOK
  13. select HAVE_DMA_API_DEBUG
  14. select HAVE_DMA_ATTRS
  15. select HAVE_PERF_EVENTS
  16. select HAVE_DEBUG_BUGVERBOSE
  17. select ARCH_HAVE_CUSTOM_GPIO_H
  18. select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
  19. select PERF_USE_VMALLOC
  20. select HAVE_DEBUG_KMEMLEAK
  21. select HAVE_KERNEL_GZIP
  22. select HAVE_KERNEL_BZIP2
  23. select HAVE_KERNEL_LZMA
  24. select HAVE_KERNEL_XZ
  25. select HAVE_KERNEL_LZO
  26. select HAVE_UID16
  27. select ARCH_WANT_IPC_PARSE_VERSION
  28. select HAVE_SYSCALL_TRACEPOINTS
  29. select HAVE_REGS_AND_STACK_ACCESS_API
  30. select MAY_HAVE_SPARSE_IRQ
  31. select IRQ_FORCED_THREADING
  32. select RTC_LIB
  33. select GENERIC_ATOMIC64
  34. select GENERIC_IRQ_SHOW
  35. select GENERIC_SMP_IDLE_THREAD
  36. select GENERIC_IDLE_POLL_SETUP
  37. select GENERIC_CLOCKEVENTS
  38. select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  39. select GENERIC_STRNCPY_FROM_USER
  40. select GENERIC_STRNLEN_USER
  41. select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
  42. select MODULES_USE_ELF_RELA
  43. select OLD_SIGSUSPEND
  44. select OLD_SIGACTION
  45. help
  46. The SuperH is a RISC processor targeted for use in embedded systems
  47. and consumer electronics; it was also used in the Sega Dreamcast
  48. gaming console. The SuperH port has a home page at
  49. <http://www.linux-sh.org/>.
  50. config SUPERH32
  51. def_bool ARCH = "sh"
  52. select HAVE_KPROBES
  53. select HAVE_KRETPROBES
  54. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  55. select HAVE_FUNCTION_TRACER
  56. select HAVE_FTRACE_MCOUNT_RECORD
  57. select HAVE_DYNAMIC_FTRACE
  58. select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  59. select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  60. select ARCH_WANT_IPC_PARSE_VERSION
  61. select HAVE_FUNCTION_GRAPH_TRACER
  62. select HAVE_ARCH_KGDB
  63. select HAVE_HW_BREAKPOINT
  64. select HAVE_MIXED_BREAKPOINTS_REGS
  65. select PERF_EVENTS
  66. select ARCH_HIBERNATION_POSSIBLE if MMU
  67. select SPARSE_IRQ
  68. select HAVE_CC_STACKPROTECTOR
  69. config SUPERH64
  70. def_bool ARCH = "sh64"
  71. select KALLSYMS
  72. config ARCH_DEFCONFIG
  73. string
  74. default "arch/sh/configs/shx3_defconfig" if SUPERH32
  75. default "arch/sh/configs/cayman_defconfig" if SUPERH64
  76. config RWSEM_GENERIC_SPINLOCK
  77. def_bool y
  78. config RWSEM_XCHGADD_ALGORITHM
  79. bool
  80. config GENERIC_BUG
  81. def_bool y
  82. depends on BUG && SUPERH32
  83. config GENERIC_CSUM
  84. def_bool y
  85. depends on SUPERH64
  86. config GENERIC_HWEIGHT
  87. def_bool y
  88. config GENERIC_CALIBRATE_DELAY
  89. bool
  90. config GENERIC_LOCKBREAK
  91. def_bool y
  92. depends on SMP && PREEMPT
  93. config ARCH_SUSPEND_POSSIBLE
  94. def_bool n
  95. config ARCH_HIBERNATION_POSSIBLE
  96. def_bool n
  97. config SYS_SUPPORTS_APM_EMULATION
  98. bool
  99. select ARCH_SUSPEND_POSSIBLE
  100. config SYS_SUPPORTS_HUGETLBFS
  101. bool
  102. config SYS_SUPPORTS_SMP
  103. bool
  104. config SYS_SUPPORTS_NUMA
  105. bool
  106. config SYS_SUPPORTS_PCI
  107. bool
  108. config SYS_SUPPORTS_CMT
  109. bool
  110. config SYS_SUPPORTS_MTU2
  111. bool
  112. config SYS_SUPPORTS_TMU
  113. bool
  114. config STACKTRACE_SUPPORT
  115. def_bool y
  116. config LOCKDEP_SUPPORT
  117. def_bool y
  118. config HAVE_LATENCYTOP_SUPPORT
  119. def_bool y
  120. config ARCH_HAS_ILOG2_U32
  121. def_bool n
  122. config ARCH_HAS_ILOG2_U64
  123. def_bool n
  124. config NO_IOPORT
  125. def_bool !PCI
  126. depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
  127. !SH_HP6XX && !SH_SOLUTION_ENGINE
  128. config IO_TRAPPED
  129. bool
  130. config SWAP_IO_SPACE
  131. bool
  132. config DMA_COHERENT
  133. bool
  134. config DMA_NONCOHERENT
  135. def_bool !DMA_COHERENT
  136. config NEED_DMA_MAP_STATE
  137. def_bool DMA_NONCOHERENT
  138. config NEED_SG_DMA_LENGTH
  139. def_bool y
  140. source "init/Kconfig"
  141. source "kernel/Kconfig.freezer"
  142. menu "System type"
  143. #
  144. # Processor families
  145. #
  146. config CPU_SH2
  147. bool
  148. config CPU_SH2A
  149. bool
  150. select CPU_SH2
  151. select UNCACHED_MAPPING
  152. config CPU_SH3
  153. bool
  154. select CPU_HAS_INTEVT
  155. select CPU_HAS_SR_RB
  156. select SYS_SUPPORTS_TMU
  157. config CPU_SH4
  158. bool
  159. select CPU_HAS_INTEVT
  160. select CPU_HAS_SR_RB
  161. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  162. select SYS_SUPPORTS_TMU
  163. select SYS_SUPPORTS_HUGETLBFS if MMU
  164. config CPU_SH4A
  165. bool
  166. select CPU_SH4
  167. config CPU_SH4AL_DSP
  168. bool
  169. select CPU_SH4A
  170. select CPU_HAS_DSP
  171. config CPU_SH5
  172. bool
  173. select CPU_HAS_FPU
  174. select SYS_SUPPORTS_TMU
  175. select SYS_SUPPORTS_HUGETLBFS if MMU
  176. config CPU_SHX2
  177. bool
  178. config CPU_SHX3
  179. bool
  180. select DMA_COHERENT
  181. select SYS_SUPPORTS_SMP
  182. select SYS_SUPPORTS_NUMA
  183. config ARCH_SHMOBILE
  184. bool
  185. select ARCH_SUSPEND_POSSIBLE
  186. select PM
  187. select PM_RUNTIME
  188. config CPU_HAS_PMU
  189. depends on CPU_SH4 || CPU_SH4A
  190. default y
  191. bool
  192. if SUPERH32
  193. choice
  194. prompt "Processor sub-type selection"
  195. #
  196. # Processor subtypes
  197. #
  198. # SH-2 Processor Support
  199. config CPU_SUBTYPE_SH7619
  200. bool "Support SH7619 processor"
  201. select CPU_SH2
  202. select SYS_SUPPORTS_CMT
  203. # SH-2A Processor Support
  204. config CPU_SUBTYPE_SH7201
  205. bool "Support SH7201 processor"
  206. select CPU_SH2A
  207. select CPU_HAS_FPU
  208. select SYS_SUPPORTS_MTU2
  209. config CPU_SUBTYPE_SH7203
  210. bool "Support SH7203 processor"
  211. select CPU_SH2A
  212. select CPU_HAS_FPU
  213. select SYS_SUPPORTS_CMT
  214. select SYS_SUPPORTS_MTU2
  215. select ARCH_WANT_OPTIONAL_GPIOLIB
  216. select PINCTRL
  217. config CPU_SUBTYPE_SH7206
  218. bool "Support SH7206 processor"
  219. select CPU_SH2A
  220. select SYS_SUPPORTS_CMT
  221. select SYS_SUPPORTS_MTU2
  222. config CPU_SUBTYPE_SH7263
  223. bool "Support SH7263 processor"
  224. select CPU_SH2A
  225. select CPU_HAS_FPU
  226. select SYS_SUPPORTS_CMT
  227. select SYS_SUPPORTS_MTU2
  228. config CPU_SUBTYPE_SH7264
  229. bool "Support SH7264 processor"
  230. select CPU_SH2A
  231. select CPU_HAS_FPU
  232. select SYS_SUPPORTS_CMT
  233. select SYS_SUPPORTS_MTU2
  234. select PINCTRL
  235. config CPU_SUBTYPE_SH7269
  236. bool "Support SH7269 processor"
  237. select CPU_SH2A
  238. select CPU_HAS_FPU
  239. select SYS_SUPPORTS_CMT
  240. select SYS_SUPPORTS_MTU2
  241. select PINCTRL
  242. config CPU_SUBTYPE_MXG
  243. bool "Support MX-G processor"
  244. select CPU_SH2A
  245. select SYS_SUPPORTS_MTU2
  246. help
  247. Select MX-G if running on an R8A03022BG part.
  248. # SH-3 Processor Support
  249. config CPU_SUBTYPE_SH7705
  250. bool "Support SH7705 processor"
  251. select CPU_SH3
  252. config CPU_SUBTYPE_SH7706
  253. bool "Support SH7706 processor"
  254. select CPU_SH3
  255. help
  256. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  257. config CPU_SUBTYPE_SH7707
  258. bool "Support SH7707 processor"
  259. select CPU_SH3
  260. help
  261. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  262. config CPU_SUBTYPE_SH7708
  263. bool "Support SH7708 processor"
  264. select CPU_SH3
  265. help
  266. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  267. if you have a 100 Mhz SH-3 HD6417708R CPU.
  268. config CPU_SUBTYPE_SH7709
  269. bool "Support SH7709 processor"
  270. select CPU_SH3
  271. help
  272. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  273. config CPU_SUBTYPE_SH7710
  274. bool "Support SH7710 processor"
  275. select CPU_SH3
  276. select CPU_HAS_DSP
  277. help
  278. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  279. config CPU_SUBTYPE_SH7712
  280. bool "Support SH7712 processor"
  281. select CPU_SH3
  282. select CPU_HAS_DSP
  283. help
  284. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  285. config CPU_SUBTYPE_SH7720
  286. bool "Support SH7720 processor"
  287. select CPU_SH3
  288. select CPU_HAS_DSP
  289. select SYS_SUPPORTS_CMT
  290. select ARCH_WANT_OPTIONAL_GPIOLIB
  291. select USB_ARCH_HAS_OHCI
  292. select USB_OHCI_SH if USB_OHCI_HCD
  293. select PINCTRL
  294. help
  295. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  296. config CPU_SUBTYPE_SH7721
  297. bool "Support SH7721 processor"
  298. select CPU_SH3
  299. select CPU_HAS_DSP
  300. select SYS_SUPPORTS_CMT
  301. select USB_ARCH_HAS_OHCI
  302. select USB_OHCI_SH if USB_OHCI_HCD
  303. help
  304. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  305. # SH-4 Processor Support
  306. config CPU_SUBTYPE_SH7750
  307. bool "Support SH7750 processor"
  308. select CPU_SH4
  309. help
  310. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  311. config CPU_SUBTYPE_SH7091
  312. bool "Support SH7091 processor"
  313. select CPU_SH4
  314. help
  315. Select SH7091 if you have an SH-4 based Sega device (such as
  316. the Dreamcast, Naomi, and Naomi 2).
  317. config CPU_SUBTYPE_SH7750R
  318. bool "Support SH7750R processor"
  319. select CPU_SH4
  320. config CPU_SUBTYPE_SH7750S
  321. bool "Support SH7750S processor"
  322. select CPU_SH4
  323. config CPU_SUBTYPE_SH7751
  324. bool "Support SH7751 processor"
  325. select CPU_SH4
  326. help
  327. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  328. or if you have a HD6417751R CPU.
  329. config CPU_SUBTYPE_SH7751R
  330. bool "Support SH7751R processor"
  331. select CPU_SH4
  332. config CPU_SUBTYPE_SH7760
  333. bool "Support SH7760 processor"
  334. select CPU_SH4
  335. config CPU_SUBTYPE_SH4_202
  336. bool "Support SH4-202 processor"
  337. select CPU_SH4
  338. # SH-4A Processor Support
  339. config CPU_SUBTYPE_SH7723
  340. bool "Support SH7723 processor"
  341. select CPU_SH4A
  342. select CPU_SHX2
  343. select ARCH_SHMOBILE
  344. select ARCH_SPARSEMEM_ENABLE
  345. select SYS_SUPPORTS_CMT
  346. select ARCH_WANT_OPTIONAL_GPIOLIB
  347. select PINCTRL
  348. help
  349. Select SH7723 if you have an SH-MobileR2 CPU.
  350. config CPU_SUBTYPE_SH7724
  351. bool "Support SH7724 processor"
  352. select CPU_SH4A
  353. select CPU_SHX2
  354. select ARCH_SHMOBILE
  355. select ARCH_SPARSEMEM_ENABLE
  356. select SYS_SUPPORTS_CMT
  357. select ARCH_WANT_OPTIONAL_GPIOLIB
  358. select PINCTRL
  359. help
  360. Select SH7724 if you have an SH-MobileR2R CPU.
  361. config CPU_SUBTYPE_SH7734
  362. bool "Support SH7734 processor"
  363. select CPU_SH4A
  364. select CPU_SHX2
  365. select ARCH_WANT_OPTIONAL_GPIOLIB
  366. select USB_ARCH_HAS_OHCI
  367. select USB_ARCH_HAS_EHCI
  368. select PINCTRL
  369. help
  370. Select SH7734 if you have a SH4A SH7734 CPU.
  371. config CPU_SUBTYPE_SH7757
  372. bool "Support SH7757 processor"
  373. select CPU_SH4A
  374. select CPU_SHX2
  375. select ARCH_WANT_OPTIONAL_GPIOLIB
  376. select USB_ARCH_HAS_OHCI
  377. select USB_ARCH_HAS_EHCI
  378. select PINCTRL
  379. help
  380. Select SH7757 if you have a SH4A SH7757 CPU.
  381. config CPU_SUBTYPE_SH7763
  382. bool "Support SH7763 processor"
  383. select CPU_SH4A
  384. select USB_ARCH_HAS_OHCI
  385. select USB_OHCI_SH if USB_OHCI_HCD
  386. help
  387. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  388. config CPU_SUBTYPE_SH7770
  389. bool "Support SH7770 processor"
  390. select CPU_SH4A
  391. config CPU_SUBTYPE_SH7780
  392. bool "Support SH7780 processor"
  393. select CPU_SH4A
  394. config CPU_SUBTYPE_SH7785
  395. bool "Support SH7785 processor"
  396. select CPU_SH4A
  397. select CPU_SHX2
  398. select ARCH_SPARSEMEM_ENABLE
  399. select SYS_SUPPORTS_NUMA
  400. select ARCH_WANT_OPTIONAL_GPIOLIB
  401. select PINCTRL
  402. config CPU_SUBTYPE_SH7786
  403. bool "Support SH7786 processor"
  404. select CPU_SH4A
  405. select CPU_SHX3
  406. select CPU_HAS_PTEAEX
  407. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  408. select ARCH_WANT_OPTIONAL_GPIOLIB
  409. select USB_ARCH_HAS_OHCI
  410. select USB_OHCI_SH if USB_OHCI_HCD
  411. select USB_ARCH_HAS_EHCI
  412. select USB_EHCI_SH if USB_EHCI_HCD
  413. select PINCTRL
  414. config CPU_SUBTYPE_SHX3
  415. bool "Support SH-X3 processor"
  416. select CPU_SH4A
  417. select CPU_SHX3
  418. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  419. select ARCH_REQUIRE_GPIOLIB
  420. select PINCTRL
  421. # SH4AL-DSP Processor Support
  422. config CPU_SUBTYPE_SH7343
  423. bool "Support SH7343 processor"
  424. select CPU_SH4AL_DSP
  425. select ARCH_SHMOBILE
  426. select SYS_SUPPORTS_CMT
  427. config CPU_SUBTYPE_SH7722
  428. bool "Support SH7722 processor"
  429. select CPU_SH4AL_DSP
  430. select CPU_SHX2
  431. select ARCH_SHMOBILE
  432. select ARCH_SPARSEMEM_ENABLE
  433. select SYS_SUPPORTS_NUMA
  434. select SYS_SUPPORTS_CMT
  435. select ARCH_WANT_OPTIONAL_GPIOLIB
  436. select PINCTRL
  437. config CPU_SUBTYPE_SH7366
  438. bool "Support SH7366 processor"
  439. select CPU_SH4AL_DSP
  440. select CPU_SHX2
  441. select ARCH_SHMOBILE
  442. select ARCH_SPARSEMEM_ENABLE
  443. select SYS_SUPPORTS_NUMA
  444. select SYS_SUPPORTS_CMT
  445. endchoice
  446. endif
  447. if SUPERH64
  448. choice
  449. prompt "Processor sub-type selection"
  450. # SH-5 Processor Support
  451. config CPU_SUBTYPE_SH5_101
  452. bool "Support SH5-101 processor"
  453. select CPU_SH5
  454. config CPU_SUBTYPE_SH5_103
  455. bool "Support SH5-103 processor"
  456. select CPU_SH5
  457. endchoice
  458. endif
  459. source "arch/sh/mm/Kconfig"
  460. source "arch/sh/Kconfig.cpu"
  461. source "arch/sh/boards/Kconfig"
  462. menu "Timer and clock configuration"
  463. config SH_TIMER_TMU
  464. bool "TMU timer driver"
  465. depends on SYS_SUPPORTS_TMU
  466. default y
  467. help
  468. This enables the build of the TMU timer driver.
  469. config SH_TIMER_CMT
  470. bool "CMT timer driver"
  471. depends on SYS_SUPPORTS_CMT
  472. default y
  473. help
  474. This enables build of the CMT timer driver.
  475. config SH_TIMER_MTU2
  476. bool "MTU2 timer driver"
  477. depends on SYS_SUPPORTS_MTU2
  478. default y
  479. help
  480. This enables build of the MTU2 timer driver.
  481. config SH_PCLK_FREQ
  482. int "Peripheral clock frequency (in Hz)"
  483. depends on SH_CLK_CPG_LEGACY
  484. default "31250000" if CPU_SUBTYPE_SH7619
  485. default "33333333" if CPU_SUBTYPE_SH7770 || \
  486. CPU_SUBTYPE_SH7760 || \
  487. CPU_SUBTYPE_SH7705 || \
  488. CPU_SUBTYPE_SH7203 || \
  489. CPU_SUBTYPE_SH7206 || \
  490. CPU_SUBTYPE_SH7263 || \
  491. CPU_SUBTYPE_MXG
  492. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  493. default "66000000" if CPU_SUBTYPE_SH4_202
  494. default "50000000"
  495. help
  496. This option is used to specify the peripheral clock frequency.
  497. This is necessary for determining the reference clock value on
  498. platforms lacking an RTC.
  499. config SH_CLK_CPG
  500. def_bool y
  501. config SH_CLK_CPG_LEGACY
  502. depends on SH_CLK_CPG
  503. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  504. !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
  505. !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
  506. !CPU_SUBTYPE_SH7269
  507. endmenu
  508. menu "CPU Frequency scaling"
  509. source "drivers/cpufreq/Kconfig"
  510. endmenu
  511. source "arch/sh/drivers/Kconfig"
  512. endmenu
  513. menu "Kernel features"
  514. source kernel/Kconfig.hz
  515. config KEXEC
  516. bool "kexec system call (EXPERIMENTAL)"
  517. depends on SUPERH32 && MMU
  518. help
  519. kexec is a system call that implements the ability to shutdown your
  520. current kernel, and to start another kernel. It is like a reboot
  521. but it is independent of the system firmware. And like a reboot
  522. you can start any kernel with it, not just Linux.
  523. The name comes from the similarity to the exec system call.
  524. It is an ongoing process to be certain the hardware in a machine
  525. is properly shutdown, so do not be surprised if this code does not
  526. initially work for you. As of this writing the exact hardware
  527. interface is strongly in flux, so no good recommendation can be
  528. made.
  529. config CRASH_DUMP
  530. bool "kernel crash dumps (EXPERIMENTAL)"
  531. depends on SUPERH32 && BROKEN_ON_SMP
  532. help
  533. Generate crash dump after being started by kexec.
  534. This should be normally only set in special crash dump kernels
  535. which are loaded in the main kernel with kexec-tools into
  536. a specially reserved region and then later executed after
  537. a crash by kdump/kexec. The crash dump kernel must be compiled
  538. to a memory address not used by the main kernel using
  539. PHYSICAL_START.
  540. For more details see Documentation/kdump/kdump.txt
  541. config KEXEC_JUMP
  542. bool "kexec jump (EXPERIMENTAL)"
  543. depends on SUPERH32 && KEXEC && HIBERNATION
  544. help
  545. Jump between original kernel and kexeced kernel and invoke
  546. code via KEXEC
  547. config PHYSICAL_START
  548. hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
  549. default MEMORY_START
  550. ---help---
  551. This gives the physical address where the kernel is loaded
  552. and is ordinarily the same as MEMORY_START.
  553. Different values are primarily used in the case of kexec on panic
  554. where the fail safe kernel needs to run at a different address
  555. than the panic-ed kernel.
  556. config SECCOMP
  557. bool "Enable seccomp to safely compute untrusted bytecode"
  558. depends on PROC_FS
  559. help
  560. This kernel feature is useful for number crunching applications
  561. that may need to compute untrusted bytecode during their
  562. execution. By using pipes or other transports made available to
  563. the process as file descriptors supporting the read/write
  564. syscalls, it's possible to isolate those applications in
  565. their own address space using seccomp. Once seccomp is
  566. enabled via prctl, it cannot be disabled and the task is only
  567. allowed to execute a few safe syscalls defined by each seccomp
  568. mode.
  569. If unsure, say N.
  570. config SMP
  571. bool "Symmetric multi-processing support"
  572. depends on SYS_SUPPORTS_SMP
  573. ---help---
  574. This enables support for systems with more than one CPU. If you have
  575. a system with only one CPU, say N. If you have a system with more
  576. than one CPU, say Y.
  577. If you say N here, the kernel will run on uni- and multiprocessor
  578. machines, but will use only one CPU of a multiprocessor machine. If
  579. you say Y here, the kernel will run on many, but not all,
  580. uniprocessor machines. On a uniprocessor machine, the kernel
  581. will run faster if you say N here.
  582. People using multiprocessor machines who say Y here should also say
  583. Y to "Enhanced Real Time Clock Support", below.
  584. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  585. available at <http://www.tldp.org/docs.html#howto>.
  586. If you don't know what to do here, say N.
  587. config NR_CPUS
  588. int "Maximum number of CPUs (2-32)"
  589. range 2 32
  590. depends on SMP
  591. default "4" if CPU_SUBTYPE_SHX3
  592. default "2"
  593. help
  594. This allows you to specify the maximum number of CPUs which this
  595. kernel will support. The maximum supported value is 32 and the
  596. minimum value which makes sense is 2.
  597. This is purely to save memory - each supported CPU adds
  598. approximately eight kilobytes to the kernel image.
  599. config HOTPLUG_CPU
  600. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  601. depends on SMP
  602. help
  603. Say Y here to experiment with turning CPUs off and on. CPUs
  604. can be controlled through /sys/devices/system/cpu.
  605. source "kernel/Kconfig.preempt"
  606. config GUSA
  607. def_bool y
  608. depends on !SMP && SUPERH32
  609. help
  610. This enables support for gUSA (general UserSpace Atomicity).
  611. This is the default implementation for both UP and non-ll/sc
  612. CPUs, and is used by the libc, amongst others.
  613. For additional information, design information can be found
  614. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  615. This should only be disabled for special cases where alternate
  616. atomicity implementations exist.
  617. config GUSA_RB
  618. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  619. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  620. help
  621. Enabling this option will allow the kernel to implement some
  622. atomic operations using a software implementation of load-locked/
  623. store-conditional (LLSC). On machines which do not have hardware
  624. LLSC, this should be more efficient than the other alternative of
  625. disabling interrupts around the atomic sequence.
  626. config HW_PERF_EVENTS
  627. bool "Enable hardware performance counter support for perf events"
  628. depends on PERF_EVENTS && CPU_HAS_PMU
  629. default y
  630. help
  631. Enable hardware performance counter support for perf events. If
  632. disabled, perf events will use software events only.
  633. source "drivers/sh/Kconfig"
  634. endmenu
  635. menu "Boot options"
  636. config ZERO_PAGE_OFFSET
  637. hex
  638. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  639. SH_7751_SOLUTION_ENGINE
  640. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  641. default "0x00002000" if PAGE_SIZE_8KB
  642. default "0x00001000"
  643. help
  644. This sets the default offset of zero page.
  645. config BOOT_LINK_OFFSET
  646. hex
  647. default "0x00210000" if SH_SHMIN
  648. default "0x00400000" if SH_CAYMAN
  649. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  650. default "0x009e0000" if SH_TITAN
  651. default "0x01800000" if SH_SDK7780
  652. default "0x02000000" if SH_EDOSK7760
  653. default "0x00800000"
  654. help
  655. This option allows you to set the link address offset of the zImage.
  656. This can be useful if you are on a board which has a small amount of
  657. memory.
  658. config ENTRY_OFFSET
  659. hex
  660. default "0x00001000" if PAGE_SIZE_4KB
  661. default "0x00002000" if PAGE_SIZE_8KB
  662. default "0x00004000" if PAGE_SIZE_16KB
  663. default "0x00010000" if PAGE_SIZE_64KB
  664. default "0x00000000"
  665. config ROMIMAGE_MMCIF
  666. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  667. depends on CPU_SUBTYPE_SH7724
  668. help
  669. Say Y here to include experimental MMCIF loading code in
  670. romImage. With this enabled it is possible to write the romImage
  671. kernel image to an MMC card and boot the kernel straight from
  672. the reset vector. At reset the processor Mask ROM will load the
  673. first part of the romImage which in turn loads the rest the kernel
  674. image to RAM using the MMCIF hardware block.
  675. choice
  676. prompt "Kernel command line"
  677. optional
  678. default CMDLINE_OVERWRITE
  679. help
  680. Setting this option allows the kernel command line arguments
  681. to be set.
  682. config CMDLINE_OVERWRITE
  683. bool "Overwrite bootloader kernel arguments"
  684. help
  685. Given string will overwrite any arguments passed in by
  686. a bootloader.
  687. config CMDLINE_EXTEND
  688. bool "Extend bootloader kernel arguments"
  689. help
  690. Given string will be concatenated with arguments passed in
  691. by a bootloader.
  692. endchoice
  693. config CMDLINE
  694. string "Kernel command line arguments string"
  695. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  696. default "console=ttySC1,115200"
  697. endmenu
  698. menu "Bus options"
  699. config SUPERHYWAY
  700. tristate "SuperHyway Bus support"
  701. depends on CPU_SUBTYPE_SH4_202
  702. config MAPLE
  703. bool "Maple Bus support"
  704. depends on SH_DREAMCAST
  705. help
  706. The Maple Bus is SEGA's serial communication bus for peripherals
  707. on the Dreamcast. Without this bus support you won't be able to
  708. get your Dreamcast keyboard etc to work, so most users
  709. probably want to say 'Y' here, unless you are only using the
  710. Dreamcast with a serial line terminal or a remote network
  711. connection.
  712. config PCI
  713. bool "PCI support"
  714. depends on SYS_SUPPORTS_PCI
  715. select PCI_DOMAINS
  716. select GENERIC_PCI_IOMAP
  717. select NO_GENERIC_PCI_IOPORT_MAP
  718. help
  719. Find out whether you have a PCI motherboard. PCI is the name of a
  720. bus system, i.e. the way the CPU talks to the other stuff inside
  721. your box. If you have PCI, say Y, otherwise N.
  722. config PCI_DOMAINS
  723. bool
  724. source "drivers/pci/pcie/Kconfig"
  725. source "drivers/pci/Kconfig"
  726. source "drivers/pcmcia/Kconfig"
  727. source "drivers/pci/hotplug/Kconfig"
  728. endmenu
  729. menu "Executable file formats"
  730. source "fs/Kconfig.binfmt"
  731. endmenu
  732. menu "Power management options (EXPERIMENTAL)"
  733. source "kernel/power/Kconfig"
  734. source "drivers/cpuidle/Kconfig"
  735. endmenu
  736. source "net/Kconfig"
  737. source "drivers/Kconfig"
  738. source "fs/Kconfig"
  739. source "arch/sh/Kconfig.debug"
  740. source "security/Kconfig"
  741. source "crypto/Kconfig"
  742. source "lib/Kconfig"