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