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_MEMBLOCK_NODE_MAP
  8. select ARCH_DISCARD_MEMBLOCK
  9. select HAVE_OPROFILE
  10. select HAVE_GENERIC_DMA_COHERENT
  11. select HAVE_ARCH_TRACEHOOK
  12. select HAVE_DMA_API_DEBUG
  13. select HAVE_DMA_ATTRS
  14. select HAVE_IRQ_WORK
  15. select HAVE_PERF_EVENTS
  16. select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
  17. select PERF_USE_VMALLOC
  18. select HAVE_KERNEL_GZIP
  19. select HAVE_KERNEL_BZIP2
  20. select HAVE_KERNEL_LZMA
  21. select HAVE_KERNEL_XZ
  22. select HAVE_KERNEL_LZO
  23. select HAVE_SYSCALL_TRACEPOINTS
  24. select HAVE_REGS_AND_STACK_ACCESS_API
  25. select HAVE_GENERIC_HARDIRQS
  26. select MAY_HAVE_SPARSE_IRQ
  27. select IRQ_FORCED_THREADING
  28. select RTC_LIB
  29. select GENERIC_ATOMIC64
  30. select GENERIC_IRQ_SHOW
  31. select GENERIC_SMP_IDLE_THREAD
  32. help
  33. The SuperH is a RISC processor targeted for use in embedded systems
  34. and consumer electronics; it was also used in the Sega Dreamcast
  35. gaming console. The SuperH port has a home page at
  36. <http://www.linux-sh.org/>.
  37. config SUPERH32
  38. def_bool ARCH = "sh"
  39. select HAVE_KPROBES
  40. select HAVE_KRETPROBES
  41. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  42. select HAVE_FUNCTION_TRACER
  43. select HAVE_FTRACE_MCOUNT_RECORD
  44. select HAVE_DYNAMIC_FTRACE
  45. select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  46. select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  47. select HAVE_FUNCTION_GRAPH_TRACER
  48. select HAVE_ARCH_KGDB
  49. select HAVE_HW_BREAKPOINT
  50. select HAVE_MIXED_BREAKPOINTS_REGS
  51. select PERF_EVENTS
  52. select ARCH_HIBERNATION_POSSIBLE if MMU
  53. select SPARSE_IRQ
  54. config SUPERH64
  55. def_bool ARCH = "sh64"
  56. config ARCH_DEFCONFIG
  57. string
  58. default "arch/sh/configs/shx3_defconfig" if SUPERH32
  59. default "arch/sh/configs/cayman_defconfig" if SUPERH64
  60. config RWSEM_GENERIC_SPINLOCK
  61. def_bool y
  62. config RWSEM_XCHGADD_ALGORITHM
  63. bool
  64. config GENERIC_BUG
  65. def_bool y
  66. depends on BUG && SUPERH32
  67. config GENERIC_CSUM
  68. def_bool y
  69. depends on SUPERH64
  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_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 ARCH_SUSPEND_POSSIBLE
  89. def_bool n
  90. config ARCH_HIBERNATION_POSSIBLE
  91. def_bool n
  92. config SYS_SUPPORTS_APM_EMULATION
  93. bool
  94. select ARCH_SUSPEND_POSSIBLE
  95. config SYS_SUPPORTS_HUGETLBFS
  96. bool
  97. config SYS_SUPPORTS_SMP
  98. bool
  99. config SYS_SUPPORTS_NUMA
  100. bool
  101. config SYS_SUPPORTS_PCI
  102. bool
  103. config SYS_SUPPORTS_CMT
  104. bool
  105. config SYS_SUPPORTS_MTU2
  106. bool
  107. config SYS_SUPPORTS_TMU
  108. bool
  109. config STACKTRACE_SUPPORT
  110. def_bool y
  111. config LOCKDEP_SUPPORT
  112. def_bool y
  113. config HAVE_LATENCYTOP_SUPPORT
  114. def_bool y
  115. config ARCH_HAS_ILOG2_U32
  116. def_bool n
  117. config ARCH_HAS_ILOG2_U64
  118. def_bool n
  119. config ARCH_NO_VIRT_TO_BUS
  120. def_bool y
  121. config ARCH_HAS_DEFAULT_IDLE
  122. def_bool y
  123. config NO_IOPORT
  124. def_bool !PCI
  125. depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN
  126. config IO_TRAPPED
  127. bool
  128. config SWAP_IO_SPACE
  129. bool
  130. config DMA_COHERENT
  131. bool
  132. config DMA_NONCOHERENT
  133. def_bool !DMA_COHERENT
  134. config NEED_DMA_MAP_STATE
  135. def_bool DMA_NONCOHERENT
  136. config NEED_SG_DMA_LENGTH
  137. def_bool y
  138. source "init/Kconfig"
  139. source "kernel/Kconfig.freezer"
  140. menu "System type"
  141. #
  142. # Processor families
  143. #
  144. config CPU_SH2
  145. bool
  146. config CPU_SH2A
  147. bool
  148. select CPU_SH2
  149. select UNCACHED_MAPPING
  150. config CPU_SH3
  151. bool
  152. select CPU_HAS_INTEVT
  153. select CPU_HAS_SR_RB
  154. select SYS_SUPPORTS_TMU
  155. config CPU_SH4
  156. bool
  157. select CPU_HAS_INTEVT
  158. select CPU_HAS_SR_RB
  159. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  160. select SYS_SUPPORTS_TMU
  161. select SYS_SUPPORTS_HUGETLBFS if MMU
  162. config CPU_SH4A
  163. bool
  164. select CPU_SH4
  165. config CPU_SH4AL_DSP
  166. bool
  167. select CPU_SH4A
  168. select CPU_HAS_DSP
  169. config CPU_SH5
  170. bool
  171. select CPU_HAS_FPU
  172. select SYS_SUPPORTS_TMU
  173. select SYS_SUPPORTS_HUGETLBFS if MMU
  174. config CPU_SHX2
  175. bool
  176. config CPU_SHX3
  177. bool
  178. select DMA_COHERENT
  179. select SYS_SUPPORTS_SMP
  180. select SYS_SUPPORTS_NUMA
  181. config ARCH_SHMOBILE
  182. bool
  183. select ARCH_SUSPEND_POSSIBLE
  184. select PM
  185. select PM_RUNTIME
  186. config CPU_HAS_PMU
  187. depends on CPU_SH4 || CPU_SH4A
  188. default y
  189. bool
  190. if SUPERH32
  191. choice
  192. prompt "Processor sub-type selection"
  193. #
  194. # Processor subtypes
  195. #
  196. # SH-2 Processor Support
  197. config CPU_SUBTYPE_SH7619
  198. bool "Support SH7619 processor"
  199. select CPU_SH2
  200. select SYS_SUPPORTS_CMT
  201. # SH-2A Processor Support
  202. config CPU_SUBTYPE_SH7201
  203. bool "Support SH7201 processor"
  204. select CPU_SH2A
  205. select CPU_HAS_FPU
  206. select SYS_SUPPORTS_MTU2
  207. config CPU_SUBTYPE_SH7203
  208. bool "Support SH7203 processor"
  209. select CPU_SH2A
  210. select CPU_HAS_FPU
  211. select SYS_SUPPORTS_CMT
  212. select SYS_SUPPORTS_MTU2
  213. select ARCH_WANT_OPTIONAL_GPIOLIB
  214. config CPU_SUBTYPE_SH7206
  215. bool "Support SH7206 processor"
  216. select CPU_SH2A
  217. select SYS_SUPPORTS_CMT
  218. select SYS_SUPPORTS_MTU2
  219. config CPU_SUBTYPE_SH7263
  220. bool "Support SH7263 processor"
  221. select CPU_SH2A
  222. select CPU_HAS_FPU
  223. select SYS_SUPPORTS_CMT
  224. select SYS_SUPPORTS_MTU2
  225. config CPU_SUBTYPE_MXG
  226. bool "Support MX-G processor"
  227. select CPU_SH2A
  228. select SYS_SUPPORTS_MTU2
  229. help
  230. Select MX-G if running on an R8A03022BG part.
  231. # SH-3 Processor Support
  232. config CPU_SUBTYPE_SH7705
  233. bool "Support SH7705 processor"
  234. select CPU_SH3
  235. config CPU_SUBTYPE_SH7706
  236. bool "Support SH7706 processor"
  237. select CPU_SH3
  238. help
  239. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  240. config CPU_SUBTYPE_SH7707
  241. bool "Support SH7707 processor"
  242. select CPU_SH3
  243. help
  244. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  245. config CPU_SUBTYPE_SH7708
  246. bool "Support SH7708 processor"
  247. select CPU_SH3
  248. help
  249. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  250. if you have a 100 Mhz SH-3 HD6417708R CPU.
  251. config CPU_SUBTYPE_SH7709
  252. bool "Support SH7709 processor"
  253. select CPU_SH3
  254. help
  255. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  256. config CPU_SUBTYPE_SH7710
  257. bool "Support SH7710 processor"
  258. select CPU_SH3
  259. select CPU_HAS_DSP
  260. help
  261. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  262. config CPU_SUBTYPE_SH7712
  263. bool "Support SH7712 processor"
  264. select CPU_SH3
  265. select CPU_HAS_DSP
  266. help
  267. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  268. config CPU_SUBTYPE_SH7720
  269. bool "Support SH7720 processor"
  270. select CPU_SH3
  271. select CPU_HAS_DSP
  272. select SYS_SUPPORTS_CMT
  273. select ARCH_WANT_OPTIONAL_GPIOLIB
  274. select USB_ARCH_HAS_OHCI
  275. select USB_OHCI_SH if USB_OHCI_HCD
  276. help
  277. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  278. config CPU_SUBTYPE_SH7721
  279. bool "Support SH7721 processor"
  280. select CPU_SH3
  281. select CPU_HAS_DSP
  282. select SYS_SUPPORTS_CMT
  283. select USB_ARCH_HAS_OHCI
  284. select USB_OHCI_SH if USB_OHCI_HCD
  285. help
  286. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  287. # SH-4 Processor Support
  288. config CPU_SUBTYPE_SH7750
  289. bool "Support SH7750 processor"
  290. select CPU_SH4
  291. help
  292. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  293. config CPU_SUBTYPE_SH7091
  294. bool "Support SH7091 processor"
  295. select CPU_SH4
  296. help
  297. Select SH7091 if you have an SH-4 based Sega device (such as
  298. the Dreamcast, Naomi, and Naomi 2).
  299. config CPU_SUBTYPE_SH7750R
  300. bool "Support SH7750R processor"
  301. select CPU_SH4
  302. config CPU_SUBTYPE_SH7750S
  303. bool "Support SH7750S processor"
  304. select CPU_SH4
  305. config CPU_SUBTYPE_SH7751
  306. bool "Support SH7751 processor"
  307. select CPU_SH4
  308. help
  309. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  310. or if you have a HD6417751R CPU.
  311. config CPU_SUBTYPE_SH7751R
  312. bool "Support SH7751R processor"
  313. select CPU_SH4
  314. config CPU_SUBTYPE_SH7760
  315. bool "Support SH7760 processor"
  316. select CPU_SH4
  317. config CPU_SUBTYPE_SH4_202
  318. bool "Support SH4-202 processor"
  319. select CPU_SH4
  320. # SH-4A Processor Support
  321. config CPU_SUBTYPE_SH7723
  322. bool "Support SH7723 processor"
  323. select CPU_SH4A
  324. select CPU_SHX2
  325. select ARCH_SHMOBILE
  326. select ARCH_SPARSEMEM_ENABLE
  327. select SYS_SUPPORTS_CMT
  328. select ARCH_WANT_OPTIONAL_GPIOLIB
  329. help
  330. Select SH7723 if you have an SH-MobileR2 CPU.
  331. config CPU_SUBTYPE_SH7724
  332. bool "Support SH7724 processor"
  333. select CPU_SH4A
  334. select CPU_SHX2
  335. select ARCH_SHMOBILE
  336. select ARCH_SPARSEMEM_ENABLE
  337. select SYS_SUPPORTS_CMT
  338. select ARCH_WANT_OPTIONAL_GPIOLIB
  339. help
  340. Select SH7724 if you have an SH-MobileR2R CPU.
  341. config CPU_SUBTYPE_SH7757
  342. bool "Support SH7757 processor"
  343. select CPU_SH4A
  344. select CPU_SHX2
  345. select ARCH_WANT_OPTIONAL_GPIOLIB
  346. select USB_ARCH_HAS_OHCI
  347. select USB_ARCH_HAS_EHCI
  348. help
  349. Select SH7757 if you have a SH4A SH7757 CPU.
  350. config CPU_SUBTYPE_SH7763
  351. bool "Support SH7763 processor"
  352. select CPU_SH4A
  353. select USB_ARCH_HAS_OHCI
  354. select USB_OHCI_SH if USB_OHCI_HCD
  355. help
  356. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  357. config CPU_SUBTYPE_SH7770
  358. bool "Support SH7770 processor"
  359. select CPU_SH4A
  360. config CPU_SUBTYPE_SH7780
  361. bool "Support SH7780 processor"
  362. select CPU_SH4A
  363. config CPU_SUBTYPE_SH7785
  364. bool "Support SH7785 processor"
  365. select CPU_SH4A
  366. select CPU_SHX2
  367. select ARCH_SPARSEMEM_ENABLE
  368. select SYS_SUPPORTS_NUMA
  369. select ARCH_WANT_OPTIONAL_GPIOLIB
  370. config CPU_SUBTYPE_SH7786
  371. bool "Support SH7786 processor"
  372. select CPU_SH4A
  373. select CPU_SHX3
  374. select CPU_HAS_PTEAEX
  375. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  376. select ARCH_WANT_OPTIONAL_GPIOLIB
  377. select USB_ARCH_HAS_OHCI
  378. select USB_OHCI_SH if USB_OHCI_HCD
  379. select USB_ARCH_HAS_EHCI
  380. select USB_EHCI_SH if USB_EHCI_HCD
  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. PHYSICAL_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 PHYSICAL_START
  525. hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
  526. default MEMORY_START
  527. ---help---
  528. This gives the physical address where the kernel is loaded
  529. and is ordinarily the same as MEMORY_START.
  530. Different values are primarily used in the case of kexec on panic
  531. where the fail safe kernel needs to run at a different address
  532. than the panic-ed kernel.
  533. config SECCOMP
  534. bool "Enable seccomp to safely compute untrusted bytecode"
  535. depends on PROC_FS
  536. help
  537. This kernel feature is useful for number crunching applications
  538. that may need to compute untrusted bytecode during their
  539. execution. By using pipes or other transports made available to
  540. the process as file descriptors supporting the read/write
  541. syscalls, it's possible to isolate those applications in
  542. their own address space using seccomp. Once seccomp is
  543. enabled via prctl, it cannot be disabled and the task is only
  544. allowed to execute a few safe syscalls defined by each seccomp
  545. mode.
  546. If unsure, say N.
  547. config SMP
  548. bool "Symmetric multi-processing support"
  549. depends on SYS_SUPPORTS_SMP
  550. select USE_GENERIC_SMP_HELPERS
  551. ---help---
  552. This enables support for systems with more than one CPU. If you have
  553. a system with only one CPU, like most personal computers, say N. If
  554. you have a system with more than one CPU, say Y.
  555. If you say N here, the kernel will run on single and multiprocessor
  556. machines, but will use only one CPU of a multiprocessor machine. If
  557. you say Y here, the kernel will run on many, but not all,
  558. singleprocessor machines. On a singleprocessor machine, the kernel
  559. will run faster if you say N here.
  560. People using multiprocessor machines who say Y here should also say
  561. Y to "Enhanced Real Time Clock Support", below.
  562. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  563. available at <http://www.tldp.org/docs.html#howto>.
  564. If you don't know what to do here, say N.
  565. config NR_CPUS
  566. int "Maximum number of CPUs (2-32)"
  567. range 2 32
  568. depends on SMP
  569. default "4" if CPU_SUBTYPE_SHX3
  570. default "2"
  571. help
  572. This allows you to specify the maximum number of CPUs which this
  573. kernel will support. The maximum supported value is 32 and the
  574. minimum value which makes sense is 2.
  575. This is purely to save memory - each supported CPU adds
  576. approximately eight kilobytes to the kernel image.
  577. config HOTPLUG_CPU
  578. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  579. depends on SMP && HOTPLUG && EXPERIMENTAL
  580. help
  581. Say Y here to experiment with turning CPUs off and on. CPUs
  582. can be controlled through /sys/devices/system/cpu.
  583. source "kernel/Kconfig.preempt"
  584. config GUSA
  585. def_bool y
  586. depends on !SMP && SUPERH32
  587. help
  588. This enables support for gUSA (general UserSpace Atomicity).
  589. This is the default implementation for both UP and non-ll/sc
  590. CPUs, and is used by the libc, amongst others.
  591. For additional information, design information can be found
  592. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  593. This should only be disabled for special cases where alternate
  594. atomicity implementations exist.
  595. config GUSA_RB
  596. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  597. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  598. help
  599. Enabling this option will allow the kernel to implement some
  600. atomic operations using a software implementation of load-locked/
  601. store-conditional (LLSC). On machines which do not have hardware
  602. LLSC, this should be more efficient than the other alternative of
  603. disabling interrupts around the atomic sequence.
  604. config HW_PERF_EVENTS
  605. bool "Enable hardware performance counter support for perf events"
  606. depends on PERF_EVENTS && CPU_HAS_PMU
  607. default y
  608. help
  609. Enable hardware performance counter support for perf events. If
  610. disabled, perf events will use software events only.
  611. source "drivers/sh/Kconfig"
  612. endmenu
  613. menu "Boot options"
  614. config ZERO_PAGE_OFFSET
  615. hex
  616. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  617. SH_7751_SOLUTION_ENGINE
  618. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  619. default "0x00002000" if PAGE_SIZE_8KB
  620. default "0x00001000"
  621. help
  622. This sets the default offset of zero page.
  623. config BOOT_LINK_OFFSET
  624. hex
  625. default "0x00210000" if SH_SHMIN
  626. default "0x00400000" if SH_CAYMAN
  627. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  628. default "0x009e0000" if SH_TITAN
  629. default "0x01800000" if SH_SDK7780
  630. default "0x02000000" if SH_EDOSK7760
  631. default "0x00800000"
  632. help
  633. This option allows you to set the link address offset of the zImage.
  634. This can be useful if you are on a board which has a small amount of
  635. memory.
  636. config ENTRY_OFFSET
  637. hex
  638. default "0x00001000" if PAGE_SIZE_4KB
  639. default "0x00002000" if PAGE_SIZE_8KB
  640. default "0x00004000" if PAGE_SIZE_16KB
  641. default "0x00010000" if PAGE_SIZE_64KB
  642. default "0x00000000"
  643. config ROMIMAGE_MMCIF
  644. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  645. depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
  646. help
  647. Say Y here to include experimental MMCIF loading code in
  648. romImage. With this enabled it is possible to write the romImage
  649. kernel image to an MMC card and boot the kernel straight from
  650. the reset vector. At reset the processor Mask ROM will load the
  651. first part of the romImage which in turn loads the rest the kernel
  652. image to RAM using the MMCIF hardware block.
  653. choice
  654. prompt "Kernel command line"
  655. optional
  656. default CMDLINE_OVERWRITE
  657. help
  658. Setting this option allows the kernel command line arguments
  659. to be set.
  660. config CMDLINE_OVERWRITE
  661. bool "Overwrite bootloader kernel arguments"
  662. help
  663. Given string will overwrite any arguments passed in by
  664. a bootloader.
  665. config CMDLINE_EXTEND
  666. bool "Extend bootloader kernel arguments"
  667. help
  668. Given string will be concatenated with arguments passed in
  669. by a bootloader.
  670. endchoice
  671. config CMDLINE
  672. string "Kernel command line arguments string"
  673. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  674. default "console=ttySC1,115200"
  675. endmenu
  676. menu "Bus options"
  677. config SUPERHYWAY
  678. tristate "SuperHyway Bus support"
  679. depends on CPU_SUBTYPE_SH4_202
  680. config MAPLE
  681. bool "Maple Bus support"
  682. depends on SH_DREAMCAST
  683. help
  684. The Maple Bus is SEGA's serial communication bus for peripherals
  685. on the Dreamcast. Without this bus support you won't be able to
  686. get your Dreamcast keyboard etc to work, so most users
  687. probably want to say 'Y' here, unless you are only using the
  688. Dreamcast with a serial line terminal or a remote network
  689. connection.
  690. config PCI
  691. bool "PCI support"
  692. depends on SYS_SUPPORTS_PCI
  693. select PCI_DOMAINS
  694. select GENERIC_PCI_IOMAP
  695. select NO_GENERIC_PCI_IOPORT_MAP
  696. help
  697. Find out whether you have a PCI motherboard. PCI is the name of a
  698. bus system, i.e. the way the CPU talks to the other stuff inside
  699. your box. If you have PCI, say Y, otherwise N.
  700. config PCI_DOMAINS
  701. bool
  702. source "drivers/pci/pcie/Kconfig"
  703. source "drivers/pci/Kconfig"
  704. source "drivers/pcmcia/Kconfig"
  705. source "drivers/pci/hotplug/Kconfig"
  706. endmenu
  707. menu "Executable file formats"
  708. source "fs/Kconfig.binfmt"
  709. endmenu
  710. menu "Power management options (EXPERIMENTAL)"
  711. depends on EXPERIMENTAL
  712. source "kernel/power/Kconfig"
  713. source "drivers/cpuidle/Kconfig"
  714. endmenu
  715. source "net/Kconfig"
  716. source "drivers/Kconfig"
  717. source "fs/Kconfig"
  718. source "arch/sh/Kconfig.debug"
  719. source "security/Kconfig"
  720. source "crypto/Kconfig"
  721. source "lib/Kconfig"