Kconfig 21 KB

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