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