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