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. # Support the deprecated APIs until MFD and GPIOLIB catch up.
  27. select GENERIC_HARDIRQS_NO_DEPRECATED if !MFD_SUPPORT && !GPIOLIB
  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_HWEIGHT
  69. def_bool y
  70. config IRQ_PER_CPU
  71. def_bool y
  72. config GENERIC_GPIO
  73. def_bool n
  74. config GENERIC_CALIBRATE_DELAY
  75. bool
  76. config GENERIC_IOMAP
  77. bool
  78. config GENERIC_CLOCKEVENTS
  79. def_bool y
  80. config GENERIC_CLOCKEVENTS_BROADCAST
  81. bool
  82. config GENERIC_CMOS_UPDATE
  83. def_bool y
  84. depends on SH_SH03 || SH_DREAMCAST
  85. config GENERIC_LOCKBREAK
  86. def_bool y
  87. depends on SMP && PREEMPT
  88. config SYS_SUPPORTS_PM
  89. bool
  90. depends on !SMP
  91. config ARCH_SUSPEND_POSSIBLE
  92. def_bool n
  93. config ARCH_HIBERNATION_POSSIBLE
  94. def_bool n
  95. config SYS_SUPPORTS_APM_EMULATION
  96. bool
  97. select ARCH_SUSPEND_POSSIBLE
  98. config SYS_SUPPORTS_HUGETLBFS
  99. bool
  100. config SYS_SUPPORTS_SMP
  101. bool
  102. config SYS_SUPPORTS_NUMA
  103. bool
  104. config SYS_SUPPORTS_PCI
  105. bool
  106. config SYS_SUPPORTS_CMT
  107. bool
  108. config SYS_SUPPORTS_MTU2
  109. bool
  110. config SYS_SUPPORTS_TMU
  111. bool
  112. config STACKTRACE_SUPPORT
  113. def_bool y
  114. config LOCKDEP_SUPPORT
  115. def_bool y
  116. config HAVE_LATENCYTOP_SUPPORT
  117. def_bool y
  118. config ARCH_HAS_ILOG2_U32
  119. def_bool n
  120. config ARCH_HAS_ILOG2_U64
  121. def_bool n
  122. config ARCH_NO_VIRT_TO_BUS
  123. def_bool y
  124. config ARCH_HAS_DEFAULT_IDLE
  125. def_bool y
  126. config ARCH_HAS_CPU_IDLE_WAIT
  127. def_bool y
  128. config NO_IOPORT
  129. def_bool !PCI
  130. depends on !SH_CAYMAN && !SH_SH4202_MICRODEV
  131. config IO_TRAPPED
  132. bool
  133. config DMA_COHERENT
  134. bool
  135. config DMA_NONCOHERENT
  136. def_bool !DMA_COHERENT
  137. config NEED_DMA_MAP_STATE
  138. def_bool DMA_NONCOHERENT
  139. config NEED_SG_DMA_LENGTH
  140. def_bool y
  141. source "init/Kconfig"
  142. source "kernel/Kconfig.freezer"
  143. menu "System type"
  144. #
  145. # Processor families
  146. #
  147. config CPU_SH2
  148. bool
  149. config CPU_SH2A
  150. bool
  151. select CPU_SH2
  152. select UNCACHED_MAPPING
  153. config CPU_SH3
  154. bool
  155. select CPU_HAS_INTEVT
  156. select CPU_HAS_SR_RB
  157. select SYS_SUPPORTS_TMU
  158. config CPU_SH4
  159. bool
  160. select CPU_HAS_INTEVT
  161. select CPU_HAS_SR_RB
  162. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  163. select SYS_SUPPORTS_TMU
  164. select SYS_SUPPORTS_HUGETLBFS if MMU
  165. config CPU_SH4A
  166. bool
  167. select CPU_SH4
  168. config CPU_SH4AL_DSP
  169. bool
  170. select CPU_SH4A
  171. select CPU_HAS_DSP
  172. config CPU_SH5
  173. bool
  174. select CPU_HAS_FPU
  175. select SYS_SUPPORTS_TMU
  176. select SYS_SUPPORTS_HUGETLBFS if MMU
  177. config CPU_SHX2
  178. bool
  179. config CPU_SHX3
  180. bool
  181. select DMA_COHERENT
  182. select SYS_SUPPORTS_SMP
  183. select SYS_SUPPORTS_NUMA
  184. config ARCH_SHMOBILE
  185. bool
  186. select ARCH_SUSPEND_POSSIBLE
  187. select PM
  188. select PM_RUNTIME
  189. config CPU_HAS_PMU
  190. depends on CPU_SH4 || CPU_SH4A
  191. default y
  192. bool
  193. if SUPERH32
  194. choice
  195. prompt "Processor sub-type selection"
  196. #
  197. # Processor subtypes
  198. #
  199. # SH-2 Processor Support
  200. config CPU_SUBTYPE_SH7619
  201. bool "Support SH7619 processor"
  202. select CPU_SH2
  203. select SYS_SUPPORTS_CMT
  204. # SH-2A Processor Support
  205. config CPU_SUBTYPE_SH7201
  206. bool "Support SH7201 processor"
  207. select CPU_SH2A
  208. select CPU_HAS_FPU
  209. select SYS_SUPPORTS_MTU2
  210. config CPU_SUBTYPE_SH7203
  211. bool "Support SH7203 processor"
  212. select CPU_SH2A
  213. select CPU_HAS_FPU
  214. select SYS_SUPPORTS_CMT
  215. select SYS_SUPPORTS_MTU2
  216. select ARCH_WANT_OPTIONAL_GPIOLIB
  217. config CPU_SUBTYPE_SH7206
  218. bool "Support SH7206 processor"
  219. select CPU_SH2A
  220. select SYS_SUPPORTS_CMT
  221. select SYS_SUPPORTS_MTU2
  222. config CPU_SUBTYPE_SH7263
  223. bool "Support SH7263 processor"
  224. select CPU_SH2A
  225. select CPU_HAS_FPU
  226. select SYS_SUPPORTS_CMT
  227. select SYS_SUPPORTS_MTU2
  228. config CPU_SUBTYPE_MXG
  229. bool "Support MX-G processor"
  230. select CPU_SH2A
  231. select SYS_SUPPORTS_MTU2
  232. help
  233. Select MX-G if running on an R8A03022BG part.
  234. # SH-3 Processor Support
  235. config CPU_SUBTYPE_SH7705
  236. bool "Support SH7705 processor"
  237. select CPU_SH3
  238. config CPU_SUBTYPE_SH7706
  239. bool "Support SH7706 processor"
  240. select CPU_SH3
  241. help
  242. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  243. config CPU_SUBTYPE_SH7707
  244. bool "Support SH7707 processor"
  245. select CPU_SH3
  246. help
  247. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  248. config CPU_SUBTYPE_SH7708
  249. bool "Support SH7708 processor"
  250. select CPU_SH3
  251. help
  252. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  253. if you have a 100 Mhz SH-3 HD6417708R CPU.
  254. config CPU_SUBTYPE_SH7709
  255. bool "Support SH7709 processor"
  256. select CPU_SH3
  257. help
  258. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  259. config CPU_SUBTYPE_SH7710
  260. bool "Support SH7710 processor"
  261. select CPU_SH3
  262. select CPU_HAS_DSP
  263. help
  264. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  265. config CPU_SUBTYPE_SH7712
  266. bool "Support SH7712 processor"
  267. select CPU_SH3
  268. select CPU_HAS_DSP
  269. help
  270. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  271. config CPU_SUBTYPE_SH7720
  272. bool "Support SH7720 processor"
  273. select CPU_SH3
  274. select CPU_HAS_DSP
  275. select SYS_SUPPORTS_CMT
  276. select ARCH_WANT_OPTIONAL_GPIOLIB
  277. select USB_ARCH_HAS_OHCI
  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. help
  287. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  288. # SH-4 Processor Support
  289. config CPU_SUBTYPE_SH7750
  290. bool "Support SH7750 processor"
  291. select CPU_SH4
  292. help
  293. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  294. config CPU_SUBTYPE_SH7091
  295. bool "Support SH7091 processor"
  296. select CPU_SH4
  297. help
  298. Select SH7091 if you have an SH-4 based Sega device (such as
  299. the Dreamcast, Naomi, and Naomi 2).
  300. config CPU_SUBTYPE_SH7750R
  301. bool "Support SH7750R processor"
  302. select CPU_SH4
  303. config CPU_SUBTYPE_SH7750S
  304. bool "Support SH7750S processor"
  305. select CPU_SH4
  306. config CPU_SUBTYPE_SH7751
  307. bool "Support SH7751 processor"
  308. select CPU_SH4
  309. help
  310. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  311. or if you have a HD6417751R CPU.
  312. config CPU_SUBTYPE_SH7751R
  313. bool "Support SH7751R processor"
  314. select CPU_SH4
  315. config CPU_SUBTYPE_SH7760
  316. bool "Support SH7760 processor"
  317. select CPU_SH4
  318. config CPU_SUBTYPE_SH4_202
  319. bool "Support SH4-202 processor"
  320. select CPU_SH4
  321. # SH-4A Processor Support
  322. config CPU_SUBTYPE_SH7723
  323. bool "Support SH7723 processor"
  324. select CPU_SH4A
  325. select CPU_SHX2
  326. select ARCH_SHMOBILE
  327. select ARCH_SPARSEMEM_ENABLE
  328. select SYS_SUPPORTS_CMT
  329. select ARCH_WANT_OPTIONAL_GPIOLIB
  330. help
  331. Select SH7723 if you have an SH-MobileR2 CPU.
  332. config CPU_SUBTYPE_SH7724
  333. bool "Support SH7724 processor"
  334. select CPU_SH4A
  335. select CPU_SHX2
  336. select ARCH_SHMOBILE
  337. select ARCH_SPARSEMEM_ENABLE
  338. select SYS_SUPPORTS_CMT
  339. select ARCH_WANT_OPTIONAL_GPIOLIB
  340. help
  341. Select SH7724 if you have an SH-MobileR2R CPU.
  342. config CPU_SUBTYPE_SH7757
  343. bool "Support SH7757 processor"
  344. select CPU_SH4A
  345. select CPU_SHX2
  346. select ARCH_WANT_OPTIONAL_GPIOLIB
  347. help
  348. Select SH7757 if you have a SH4A SH7757 CPU.
  349. config CPU_SUBTYPE_SH7763
  350. bool "Support SH7763 processor"
  351. select CPU_SH4A
  352. select USB_ARCH_HAS_OHCI
  353. help
  354. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  355. config CPU_SUBTYPE_SH7770
  356. bool "Support SH7770 processor"
  357. select CPU_SH4A
  358. config CPU_SUBTYPE_SH7780
  359. bool "Support SH7780 processor"
  360. select CPU_SH4A
  361. config CPU_SUBTYPE_SH7785
  362. bool "Support SH7785 processor"
  363. select CPU_SH4A
  364. select CPU_SHX2
  365. select ARCH_SPARSEMEM_ENABLE
  366. select SYS_SUPPORTS_NUMA
  367. select ARCH_WANT_OPTIONAL_GPIOLIB
  368. config CPU_SUBTYPE_SH7786
  369. bool "Support SH7786 processor"
  370. select CPU_SH4A
  371. select CPU_SHX3
  372. select CPU_HAS_PTEAEX
  373. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  374. select ARCH_WANT_OPTIONAL_GPIOLIB
  375. select USB_ARCH_HAS_OHCI
  376. select USB_ARCH_HAS_EHCI
  377. config CPU_SUBTYPE_SHX3
  378. bool "Support SH-X3 processor"
  379. select CPU_SH4A
  380. select CPU_SHX3
  381. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  382. select ARCH_REQUIRE_GPIOLIB
  383. # SH4AL-DSP Processor Support
  384. config CPU_SUBTYPE_SH7343
  385. bool "Support SH7343 processor"
  386. select CPU_SH4AL_DSP
  387. select ARCH_SHMOBILE
  388. select SYS_SUPPORTS_CMT
  389. config CPU_SUBTYPE_SH7722
  390. bool "Support SH7722 processor"
  391. select CPU_SH4AL_DSP
  392. select CPU_SHX2
  393. select ARCH_SHMOBILE
  394. select ARCH_SPARSEMEM_ENABLE
  395. select SYS_SUPPORTS_NUMA
  396. select SYS_SUPPORTS_CMT
  397. select ARCH_WANT_OPTIONAL_GPIOLIB
  398. config CPU_SUBTYPE_SH7366
  399. bool "Support SH7366 processor"
  400. select CPU_SH4AL_DSP
  401. select CPU_SHX2
  402. select ARCH_SHMOBILE
  403. select ARCH_SPARSEMEM_ENABLE
  404. select SYS_SUPPORTS_NUMA
  405. select SYS_SUPPORTS_CMT
  406. endchoice
  407. endif
  408. if SUPERH64
  409. choice
  410. prompt "Processor sub-type selection"
  411. # SH-5 Processor Support
  412. config CPU_SUBTYPE_SH5_101
  413. bool "Support SH5-101 processor"
  414. select CPU_SH5
  415. config CPU_SUBTYPE_SH5_103
  416. bool "Support SH5-103 processor"
  417. select CPU_SH5
  418. endchoice
  419. endif
  420. source "arch/sh/mm/Kconfig"
  421. source "arch/sh/Kconfig.cpu"
  422. source "arch/sh/boards/Kconfig"
  423. menu "Timer and clock configuration"
  424. config SH_TIMER_TMU
  425. bool "TMU timer driver"
  426. depends on SYS_SUPPORTS_TMU
  427. default y
  428. help
  429. This enables the build of the TMU timer driver.
  430. config SH_TIMER_CMT
  431. bool "CMT timer driver"
  432. depends on SYS_SUPPORTS_CMT
  433. default y
  434. help
  435. This enables build of the CMT timer driver.
  436. config SH_TIMER_MTU2
  437. bool "MTU2 timer driver"
  438. depends on SYS_SUPPORTS_MTU2
  439. default y
  440. help
  441. This enables build of the MTU2 timer driver.
  442. config SH_PCLK_FREQ
  443. int "Peripheral clock frequency (in Hz)"
  444. depends on SH_CLK_CPG_LEGACY
  445. default "31250000" if CPU_SUBTYPE_SH7619
  446. default "33333333" if CPU_SUBTYPE_SH7770 || \
  447. CPU_SUBTYPE_SH7760 || \
  448. CPU_SUBTYPE_SH7705 || \
  449. CPU_SUBTYPE_SH7203 || \
  450. CPU_SUBTYPE_SH7206 || \
  451. CPU_SUBTYPE_SH7263 || \
  452. CPU_SUBTYPE_MXG
  453. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  454. default "66000000" if CPU_SUBTYPE_SH4_202
  455. default "50000000"
  456. help
  457. This option is used to specify the peripheral clock frequency.
  458. This is necessary for determining the reference clock value on
  459. platforms lacking an RTC.
  460. config SH_CLK_CPG
  461. def_bool y
  462. config SH_CLK_CPG_LEGACY
  463. depends on SH_CLK_CPG
  464. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  465. !CPU_SHX3 && !CPU_SUBTYPE_SH7757
  466. source "kernel/time/Kconfig"
  467. endmenu
  468. menu "CPU Frequency scaling"
  469. source "drivers/cpufreq/Kconfig"
  470. config SH_CPU_FREQ
  471. tristate "SuperH CPU Frequency driver"
  472. depends on CPU_FREQ
  473. select CPU_FREQ_TABLE
  474. help
  475. This adds the cpufreq driver for SuperH. Any CPU that supports
  476. clock rate rounding through the clock framework can use this
  477. driver. While it will make the kernel slightly larger, this is
  478. harmless for CPUs that don't support rate rounding. The driver
  479. will also generate a notice in the boot log before disabling
  480. itself if the CPU in question is not capable of rate rounding.
  481. For details, take a look at <file:Documentation/cpu-freq>.
  482. If unsure, say N.
  483. endmenu
  484. source "arch/sh/drivers/Kconfig"
  485. endmenu
  486. menu "Kernel features"
  487. source kernel/Kconfig.hz
  488. config KEXEC
  489. bool "kexec system call (EXPERIMENTAL)"
  490. depends on SUPERH32 && EXPERIMENTAL && MMU
  491. help
  492. kexec is a system call that implements the ability to shutdown your
  493. current kernel, and to start another kernel. It is like a reboot
  494. but it is independent of the system firmware. And like a reboot
  495. you can start any kernel with it, not just Linux.
  496. The name comes from the similarity to the exec system call.
  497. It is an ongoing process to be certain the hardware in a machine
  498. is properly shutdown, so do not be surprised if this code does not
  499. initially work for you. It may help to enable device hotplugging
  500. support. As of this writing the exact hardware interface is
  501. strongly in flux, so no good recommendation can be made.
  502. config CRASH_DUMP
  503. bool "kernel crash dumps (EXPERIMENTAL)"
  504. depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
  505. help
  506. Generate crash dump after being started by kexec.
  507. This should be normally only set in special crash dump kernels
  508. which are loaded in the main kernel with kexec-tools into
  509. a specially reserved region and then later executed after
  510. a crash by kdump/kexec. The crash dump kernel must be compiled
  511. to a memory address not used by the main kernel using
  512. MEMORY_START.
  513. For more details see Documentation/kdump/kdump.txt
  514. config KEXEC_JUMP
  515. bool "kexec jump (EXPERIMENTAL)"
  516. depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
  517. help
  518. Jump between original kernel and kexeced kernel and invoke
  519. code via KEXEC
  520. config SECCOMP
  521. bool "Enable seccomp to safely compute untrusted bytecode"
  522. depends on PROC_FS
  523. help
  524. This kernel feature is useful for number crunching applications
  525. that may need to compute untrusted bytecode during their
  526. execution. By using pipes or other transports made available to
  527. the process as file descriptors supporting the read/write
  528. syscalls, it's possible to isolate those applications in
  529. their own address space using seccomp. Once seccomp is
  530. enabled via prctl, it cannot be disabled and the task is only
  531. allowed to execute a few safe syscalls defined by each seccomp
  532. mode.
  533. If unsure, say N.
  534. config SMP
  535. bool "Symmetric multi-processing support"
  536. depends on SYS_SUPPORTS_SMP
  537. select USE_GENERIC_SMP_HELPERS
  538. ---help---
  539. This enables support for systems with more than one CPU. If you have
  540. a system with only one CPU, like most personal computers, say N. If
  541. you have a system with more than one CPU, say Y.
  542. If you say N here, the kernel will run on single and multiprocessor
  543. machines, but will use only one CPU of a multiprocessor machine. If
  544. you say Y here, the kernel will run on many, but not all,
  545. singleprocessor machines. On a singleprocessor machine, the kernel
  546. will run faster if you say N here.
  547. People using multiprocessor machines who say Y here should also say
  548. Y to "Enhanced Real Time Clock Support", below.
  549. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  550. available at <http://www.tldp.org/docs.html#howto>.
  551. If you don't know what to do here, say N.
  552. config NR_CPUS
  553. int "Maximum number of CPUs (2-32)"
  554. range 2 32
  555. depends on SMP
  556. default "4" if CPU_SUBTYPE_SHX3
  557. default "2"
  558. help
  559. This allows you to specify the maximum number of CPUs which this
  560. kernel will support. The maximum supported value is 32 and the
  561. minimum value which makes sense is 2.
  562. This is purely to save memory - each supported CPU adds
  563. approximately eight kilobytes to the kernel image.
  564. config HOTPLUG_CPU
  565. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  566. depends on SMP && HOTPLUG && EXPERIMENTAL
  567. help
  568. Say Y here to experiment with turning CPUs off and on. CPUs
  569. can be controlled through /sys/devices/system/cpu.
  570. source "kernel/Kconfig.preempt"
  571. config GUSA
  572. def_bool y
  573. depends on !SMP && SUPERH32
  574. help
  575. This enables support for gUSA (general UserSpace Atomicity).
  576. This is the default implementation for both UP and non-ll/sc
  577. CPUs, and is used by the libc, amongst others.
  578. For additional information, design information can be found
  579. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  580. This should only be disabled for special cases where alternate
  581. atomicity implementations exist.
  582. config GUSA_RB
  583. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  584. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  585. help
  586. Enabling this option will allow the kernel to implement some
  587. atomic operations using a software implementation of load-locked/
  588. store-conditional (LLSC). On machines which do not have hardware
  589. LLSC, this should be more efficient than the other alternative of
  590. disabling interrupts around the atomic sequence.
  591. config HW_PERF_EVENTS
  592. bool "Enable hardware performance counter support for perf events"
  593. depends on PERF_EVENTS && CPU_HAS_PMU
  594. default y
  595. help
  596. Enable hardware performance counter support for perf events. If
  597. disabled, perf events will use software events only.
  598. source "drivers/sh/Kconfig"
  599. endmenu
  600. menu "Boot options"
  601. config ZERO_PAGE_OFFSET
  602. hex
  603. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  604. SH_7751_SOLUTION_ENGINE
  605. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  606. default "0x00002000" if PAGE_SIZE_8KB
  607. default "0x00001000"
  608. help
  609. This sets the default offset of zero page.
  610. config BOOT_LINK_OFFSET
  611. hex
  612. default "0x00210000" if SH_SHMIN
  613. default "0x00400000" if SH_CAYMAN
  614. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  615. default "0x009e0000" if SH_TITAN
  616. default "0x01800000" if SH_SDK7780
  617. default "0x02000000" if SH_EDOSK7760
  618. default "0x00800000"
  619. help
  620. This option allows you to set the link address offset of the zImage.
  621. This can be useful if you are on a board which has a small amount of
  622. memory.
  623. config ENTRY_OFFSET
  624. hex
  625. default "0x00001000" if PAGE_SIZE_4KB
  626. default "0x00002000" if PAGE_SIZE_8KB
  627. default "0x00004000" if PAGE_SIZE_16KB
  628. default "0x00010000" if PAGE_SIZE_64KB
  629. default "0x00000000"
  630. config ROMIMAGE_MMCIF
  631. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  632. depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
  633. help
  634. Say Y here to include experimental MMCIF loading code in
  635. romImage. With this enabled it is possible to write the romImage
  636. kernel image to an MMC card and boot the kernel straight from
  637. the reset vector. At reset the processor Mask ROM will load the
  638. first part of the romImage which in turn loads the rest the kernel
  639. image to RAM using the MMCIF hardware block.
  640. choice
  641. prompt "Kernel command line"
  642. optional
  643. default CMDLINE_OVERWRITE
  644. help
  645. Setting this option allows the kernel command line arguments
  646. to be set.
  647. config CMDLINE_OVERWRITE
  648. bool "Overwrite bootloader kernel arguments"
  649. help
  650. Given string will overwrite any arguments passed in by
  651. a bootloader.
  652. config CMDLINE_EXTEND
  653. bool "Extend bootloader kernel arguments"
  654. help
  655. Given string will be concatenated with arguments passed in
  656. by a bootloader.
  657. endchoice
  658. config CMDLINE
  659. string "Kernel command line arguments string"
  660. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  661. default "console=ttySC1,115200"
  662. endmenu
  663. menu "Bus options"
  664. config SUPERHYWAY
  665. tristate "SuperHyway Bus support"
  666. depends on CPU_SUBTYPE_SH4_202
  667. config MAPLE
  668. bool "Maple Bus support"
  669. depends on SH_DREAMCAST
  670. help
  671. The Maple Bus is SEGA's serial communication bus for peripherals
  672. on the Dreamcast. Without this bus support you won't be able to
  673. get your Dreamcast keyboard etc to work, so most users
  674. probably want to say 'Y' here, unless you are only using the
  675. Dreamcast with a serial line terminal or a remote network
  676. connection.
  677. config PCI
  678. bool "PCI support"
  679. depends on SYS_SUPPORTS_PCI
  680. select PCI_DOMAINS
  681. help
  682. Find out whether you have a PCI motherboard. PCI is the name of a
  683. bus system, i.e. the way the CPU talks to the other stuff inside
  684. your box. If you have PCI, say Y, otherwise N.
  685. config PCI_DOMAINS
  686. bool
  687. source "drivers/pci/pcie/Kconfig"
  688. source "drivers/pci/Kconfig"
  689. source "drivers/pcmcia/Kconfig"
  690. source "drivers/pci/hotplug/Kconfig"
  691. endmenu
  692. menu "Executable file formats"
  693. source "fs/Kconfig.binfmt"
  694. endmenu
  695. menu "Power management options (EXPERIMENTAL)"
  696. depends on EXPERIMENTAL
  697. source "kernel/power/Kconfig"
  698. source "drivers/cpuidle/Kconfig"
  699. endmenu
  700. source "net/Kconfig"
  701. source "drivers/Kconfig"
  702. source "fs/Kconfig"
  703. source "arch/sh/Kconfig.debug"
  704. source "security/Kconfig"
  705. source "crypto/Kconfig"
  706. menuconfig VIRTUALIZATION
  707. bool "Virtualization"
  708. default n
  709. ---help---
  710. Say Y here to get to see options for using your Linux host to run other
  711. operating systems inside virtual machines (guests).
  712. This option alone does not add any kernel code.
  713. If you say N, all options in this submenu will be skipped and disabled.
  714. if VIRTUALIZATION
  715. source drivers/virtio/Kconfig
  716. endif # VIRTUALIZATION
  717. source "lib/Kconfig"