Kconfig 20 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 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 && !SH_SHMIN
  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. select USB_OHCI_SH if USB_OHCI_HCD
  278. help
  279. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  280. config CPU_SUBTYPE_SH7721
  281. bool "Support SH7721 processor"
  282. select CPU_SH3
  283. select CPU_HAS_DSP
  284. select SYS_SUPPORTS_CMT
  285. select USB_ARCH_HAS_OHCI
  286. select USB_OHCI_SH if USB_OHCI_HCD
  287. help
  288. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  289. # SH-4 Processor Support
  290. config CPU_SUBTYPE_SH7750
  291. bool "Support SH7750 processor"
  292. select CPU_SH4
  293. help
  294. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  295. config CPU_SUBTYPE_SH7091
  296. bool "Support SH7091 processor"
  297. select CPU_SH4
  298. help
  299. Select SH7091 if you have an SH-4 based Sega device (such as
  300. the Dreamcast, Naomi, and Naomi 2).
  301. config CPU_SUBTYPE_SH7750R
  302. bool "Support SH7750R processor"
  303. select CPU_SH4
  304. config CPU_SUBTYPE_SH7750S
  305. bool "Support SH7750S processor"
  306. select CPU_SH4
  307. config CPU_SUBTYPE_SH7751
  308. bool "Support SH7751 processor"
  309. select CPU_SH4
  310. help
  311. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  312. or if you have a HD6417751R CPU.
  313. config CPU_SUBTYPE_SH7751R
  314. bool "Support SH7751R processor"
  315. select CPU_SH4
  316. config CPU_SUBTYPE_SH7760
  317. bool "Support SH7760 processor"
  318. select CPU_SH4
  319. config CPU_SUBTYPE_SH4_202
  320. bool "Support SH4-202 processor"
  321. select CPU_SH4
  322. # SH-4A Processor Support
  323. config CPU_SUBTYPE_SH7723
  324. bool "Support SH7723 processor"
  325. select CPU_SH4A
  326. select CPU_SHX2
  327. select ARCH_SHMOBILE
  328. select ARCH_SPARSEMEM_ENABLE
  329. select SYS_SUPPORTS_CMT
  330. select ARCH_WANT_OPTIONAL_GPIOLIB
  331. help
  332. Select SH7723 if you have an SH-MobileR2 CPU.
  333. config CPU_SUBTYPE_SH7724
  334. bool "Support SH7724 processor"
  335. select CPU_SH4A
  336. select CPU_SHX2
  337. select ARCH_SHMOBILE
  338. select ARCH_SPARSEMEM_ENABLE
  339. select SYS_SUPPORTS_CMT
  340. select ARCH_WANT_OPTIONAL_GPIOLIB
  341. help
  342. Select SH7724 if you have an SH-MobileR2R CPU.
  343. config CPU_SUBTYPE_SH7757
  344. bool "Support SH7757 processor"
  345. select CPU_SH4A
  346. select CPU_SHX2
  347. select ARCH_WANT_OPTIONAL_GPIOLIB
  348. select USB_ARCH_HAS_OHCI
  349. select USB_ARCH_HAS_EHCI
  350. help
  351. Select SH7757 if you have a SH4A SH7757 CPU.
  352. config CPU_SUBTYPE_SH7763
  353. bool "Support SH7763 processor"
  354. select CPU_SH4A
  355. select USB_ARCH_HAS_OHCI
  356. select USB_OHCI_SH if USB_OHCI_HCD
  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_OHCI_SH if USB_OHCI_HCD
  381. select USB_ARCH_HAS_EHCI
  382. select USB_EHCI_SH if USB_EHCI_HCD
  383. config CPU_SUBTYPE_SHX3
  384. bool "Support SH-X3 processor"
  385. select CPU_SH4A
  386. select CPU_SHX3
  387. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  388. select ARCH_REQUIRE_GPIOLIB
  389. # SH4AL-DSP Processor Support
  390. config CPU_SUBTYPE_SH7343
  391. bool "Support SH7343 processor"
  392. select CPU_SH4AL_DSP
  393. select ARCH_SHMOBILE
  394. select SYS_SUPPORTS_CMT
  395. config CPU_SUBTYPE_SH7722
  396. bool "Support SH7722 processor"
  397. select CPU_SH4AL_DSP
  398. select CPU_SHX2
  399. select ARCH_SHMOBILE
  400. select ARCH_SPARSEMEM_ENABLE
  401. select SYS_SUPPORTS_NUMA
  402. select SYS_SUPPORTS_CMT
  403. select ARCH_WANT_OPTIONAL_GPIOLIB
  404. config CPU_SUBTYPE_SH7366
  405. bool "Support SH7366 processor"
  406. select CPU_SH4AL_DSP
  407. select CPU_SHX2
  408. select ARCH_SHMOBILE
  409. select ARCH_SPARSEMEM_ENABLE
  410. select SYS_SUPPORTS_NUMA
  411. select SYS_SUPPORTS_CMT
  412. endchoice
  413. endif
  414. if SUPERH64
  415. choice
  416. prompt "Processor sub-type selection"
  417. # SH-5 Processor Support
  418. config CPU_SUBTYPE_SH5_101
  419. bool "Support SH5-101 processor"
  420. select CPU_SH5
  421. config CPU_SUBTYPE_SH5_103
  422. bool "Support SH5-103 processor"
  423. select CPU_SH5
  424. endchoice
  425. endif
  426. source "arch/sh/mm/Kconfig"
  427. source "arch/sh/Kconfig.cpu"
  428. source "arch/sh/boards/Kconfig"
  429. menu "Timer and clock configuration"
  430. config SH_TIMER_TMU
  431. bool "TMU timer driver"
  432. depends on SYS_SUPPORTS_TMU
  433. default y
  434. help
  435. This enables the build of the TMU timer driver.
  436. config SH_TIMER_CMT
  437. bool "CMT timer driver"
  438. depends on SYS_SUPPORTS_CMT
  439. default y
  440. help
  441. This enables build of the CMT timer driver.
  442. config SH_TIMER_MTU2
  443. bool "MTU2 timer driver"
  444. depends on SYS_SUPPORTS_MTU2
  445. default y
  446. help
  447. This enables build of the MTU2 timer driver.
  448. config SH_PCLK_FREQ
  449. int "Peripheral clock frequency (in Hz)"
  450. depends on SH_CLK_CPG_LEGACY
  451. default "31250000" if CPU_SUBTYPE_SH7619
  452. default "33333333" if CPU_SUBTYPE_SH7770 || \
  453. CPU_SUBTYPE_SH7760 || \
  454. CPU_SUBTYPE_SH7705 || \
  455. CPU_SUBTYPE_SH7203 || \
  456. CPU_SUBTYPE_SH7206 || \
  457. CPU_SUBTYPE_SH7263 || \
  458. CPU_SUBTYPE_MXG
  459. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  460. default "66000000" if CPU_SUBTYPE_SH4_202
  461. default "50000000"
  462. help
  463. This option is used to specify the peripheral clock frequency.
  464. This is necessary for determining the reference clock value on
  465. platforms lacking an RTC.
  466. config SH_CLK_CPG
  467. def_bool y
  468. config SH_CLK_CPG_LEGACY
  469. depends on SH_CLK_CPG
  470. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  471. !CPU_SHX3 && !CPU_SUBTYPE_SH7757
  472. source "kernel/time/Kconfig"
  473. endmenu
  474. menu "CPU Frequency scaling"
  475. source "drivers/cpufreq/Kconfig"
  476. config SH_CPU_FREQ
  477. tristate "SuperH CPU Frequency driver"
  478. depends on CPU_FREQ
  479. select CPU_FREQ_TABLE
  480. help
  481. This adds the cpufreq driver for SuperH. Any CPU that supports
  482. clock rate rounding through the clock framework can use this
  483. driver. While it will make the kernel slightly larger, this is
  484. harmless for CPUs that don't support rate rounding. The driver
  485. will also generate a notice in the boot log before disabling
  486. itself if the CPU in question is not capable of rate rounding.
  487. For details, take a look at <file:Documentation/cpu-freq>.
  488. If unsure, say N.
  489. endmenu
  490. source "arch/sh/drivers/Kconfig"
  491. endmenu
  492. menu "Kernel features"
  493. source kernel/Kconfig.hz
  494. config KEXEC
  495. bool "kexec system call (EXPERIMENTAL)"
  496. depends on SUPERH32 && EXPERIMENTAL && MMU
  497. help
  498. kexec is a system call that implements the ability to shutdown your
  499. current kernel, and to start another kernel. It is like a reboot
  500. but it is independent of the system firmware. And like a reboot
  501. you can start any kernel with it, not just Linux.
  502. The name comes from the similarity to the exec system call.
  503. It is an ongoing process to be certain the hardware in a machine
  504. is properly shutdown, so do not be surprised if this code does not
  505. initially work for you. It may help to enable device hotplugging
  506. support. As of this writing the exact hardware interface is
  507. strongly in flux, so no good recommendation can be made.
  508. config CRASH_DUMP
  509. bool "kernel crash dumps (EXPERIMENTAL)"
  510. depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
  511. help
  512. Generate crash dump after being started by kexec.
  513. This should be normally only set in special crash dump kernels
  514. which are loaded in the main kernel with kexec-tools into
  515. a specially reserved region and then later executed after
  516. a crash by kdump/kexec. The crash dump kernel must be compiled
  517. to a memory address not used by the main kernel using
  518. MEMORY_START.
  519. For more details see Documentation/kdump/kdump.txt
  520. config KEXEC_JUMP
  521. bool "kexec jump (EXPERIMENTAL)"
  522. depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
  523. help
  524. Jump between original kernel and kexeced kernel and invoke
  525. code via KEXEC
  526. config SECCOMP
  527. bool "Enable seccomp to safely compute untrusted bytecode"
  528. depends on PROC_FS
  529. help
  530. This kernel feature is useful for number crunching applications
  531. that may need to compute untrusted bytecode during their
  532. execution. By using pipes or other transports made available to
  533. the process as file descriptors supporting the read/write
  534. syscalls, it's possible to isolate those applications in
  535. their own address space using seccomp. Once seccomp is
  536. enabled via prctl, it cannot be disabled and the task is only
  537. allowed to execute a few safe syscalls defined by each seccomp
  538. mode.
  539. If unsure, say N.
  540. config SMP
  541. bool "Symmetric multi-processing support"
  542. depends on SYS_SUPPORTS_SMP
  543. select USE_GENERIC_SMP_HELPERS
  544. ---help---
  545. This enables support for systems with more than one CPU. If you have
  546. a system with only one CPU, like most personal computers, say N. If
  547. you have a system with more than one CPU, say Y.
  548. If you say N here, the kernel will run on single and multiprocessor
  549. machines, but will use only one CPU of a multiprocessor machine. If
  550. you say Y here, the kernel will run on many, but not all,
  551. singleprocessor machines. On a singleprocessor machine, the kernel
  552. will run faster if you say N here.
  553. People using multiprocessor machines who say Y here should also say
  554. Y to "Enhanced Real Time Clock Support", below.
  555. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  556. available at <http://www.tldp.org/docs.html#howto>.
  557. If you don't know what to do here, say N.
  558. config NR_CPUS
  559. int "Maximum number of CPUs (2-32)"
  560. range 2 32
  561. depends on SMP
  562. default "4" if CPU_SUBTYPE_SHX3
  563. default "2"
  564. help
  565. This allows you to specify the maximum number of CPUs which this
  566. kernel will support. The maximum supported value is 32 and the
  567. minimum value which makes sense is 2.
  568. This is purely to save memory - each supported CPU adds
  569. approximately eight kilobytes to the kernel image.
  570. config HOTPLUG_CPU
  571. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  572. depends on SMP && HOTPLUG && EXPERIMENTAL
  573. help
  574. Say Y here to experiment with turning CPUs off and on. CPUs
  575. can be controlled through /sys/devices/system/cpu.
  576. source "kernel/Kconfig.preempt"
  577. config GUSA
  578. def_bool y
  579. depends on !SMP && SUPERH32
  580. help
  581. This enables support for gUSA (general UserSpace Atomicity).
  582. This is the default implementation for both UP and non-ll/sc
  583. CPUs, and is used by the libc, amongst others.
  584. For additional information, design information can be found
  585. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  586. This should only be disabled for special cases where alternate
  587. atomicity implementations exist.
  588. config GUSA_RB
  589. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  590. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  591. help
  592. Enabling this option will allow the kernel to implement some
  593. atomic operations using a software implementation of load-locked/
  594. store-conditional (LLSC). On machines which do not have hardware
  595. LLSC, this should be more efficient than the other alternative of
  596. disabling interrupts around the atomic sequence.
  597. config HW_PERF_EVENTS
  598. bool "Enable hardware performance counter support for perf events"
  599. depends on PERF_EVENTS && CPU_HAS_PMU
  600. default y
  601. help
  602. Enable hardware performance counter support for perf events. If
  603. disabled, perf events will use software events only.
  604. source "drivers/sh/Kconfig"
  605. endmenu
  606. menu "Boot options"
  607. config ZERO_PAGE_OFFSET
  608. hex
  609. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  610. SH_7751_SOLUTION_ENGINE
  611. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  612. default "0x00002000" if PAGE_SIZE_8KB
  613. default "0x00001000"
  614. help
  615. This sets the default offset of zero page.
  616. config BOOT_LINK_OFFSET
  617. hex
  618. default "0x00210000" if SH_SHMIN
  619. default "0x00400000" if SH_CAYMAN
  620. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  621. default "0x009e0000" if SH_TITAN
  622. default "0x01800000" if SH_SDK7780
  623. default "0x02000000" if SH_EDOSK7760
  624. default "0x00800000"
  625. help
  626. This option allows you to set the link address offset of the zImage.
  627. This can be useful if you are on a board which has a small amount of
  628. memory.
  629. config ENTRY_OFFSET
  630. hex
  631. default "0x00001000" if PAGE_SIZE_4KB
  632. default "0x00002000" if PAGE_SIZE_8KB
  633. default "0x00004000" if PAGE_SIZE_16KB
  634. default "0x00010000" if PAGE_SIZE_64KB
  635. default "0x00000000"
  636. config ROMIMAGE_MMCIF
  637. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  638. depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
  639. help
  640. Say Y here to include experimental MMCIF loading code in
  641. romImage. With this enabled it is possible to write the romImage
  642. kernel image to an MMC card and boot the kernel straight from
  643. the reset vector. At reset the processor Mask ROM will load the
  644. first part of the romImage which in turn loads the rest the kernel
  645. image to RAM using the MMCIF hardware block.
  646. choice
  647. prompt "Kernel command line"
  648. optional
  649. default CMDLINE_OVERWRITE
  650. help
  651. Setting this option allows the kernel command line arguments
  652. to be set.
  653. config CMDLINE_OVERWRITE
  654. bool "Overwrite bootloader kernel arguments"
  655. help
  656. Given string will overwrite any arguments passed in by
  657. a bootloader.
  658. config CMDLINE_EXTEND
  659. bool "Extend bootloader kernel arguments"
  660. help
  661. Given string will be concatenated with arguments passed in
  662. by a bootloader.
  663. endchoice
  664. config CMDLINE
  665. string "Kernel command line arguments string"
  666. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  667. default "console=ttySC1,115200"
  668. endmenu
  669. menu "Bus options"
  670. config SUPERHYWAY
  671. tristate "SuperHyway Bus support"
  672. depends on CPU_SUBTYPE_SH4_202
  673. config MAPLE
  674. bool "Maple Bus support"
  675. depends on SH_DREAMCAST
  676. help
  677. The Maple Bus is SEGA's serial communication bus for peripherals
  678. on the Dreamcast. Without this bus support you won't be able to
  679. get your Dreamcast keyboard etc to work, so most users
  680. probably want to say 'Y' here, unless you are only using the
  681. Dreamcast with a serial line terminal or a remote network
  682. connection.
  683. config PCI
  684. bool "PCI support"
  685. depends on SYS_SUPPORTS_PCI
  686. select PCI_DOMAINS
  687. help
  688. Find out whether you have a PCI motherboard. PCI is the name of a
  689. bus system, i.e. the way the CPU talks to the other stuff inside
  690. your box. If you have PCI, say Y, otherwise N.
  691. config PCI_DOMAINS
  692. bool
  693. source "drivers/pci/pcie/Kconfig"
  694. source "drivers/pci/Kconfig"
  695. source "drivers/pcmcia/Kconfig"
  696. source "drivers/pci/hotplug/Kconfig"
  697. endmenu
  698. menu "Executable file formats"
  699. source "fs/Kconfig.binfmt"
  700. endmenu
  701. menu "Power management options (EXPERIMENTAL)"
  702. depends on EXPERIMENTAL
  703. source "kernel/power/Kconfig"
  704. source "drivers/cpuidle/Kconfig"
  705. endmenu
  706. source "net/Kconfig"
  707. source "drivers/Kconfig"
  708. source "fs/Kconfig"
  709. source "arch/sh/Kconfig.debug"
  710. source "security/Kconfig"
  711. source "crypto/Kconfig"
  712. source "lib/Kconfig"