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