Kconfig 21 KB

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  1. config SUPERH
  2. def_bool y
  3. select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
  4. select ARCH_MIGHT_HAVE_PC_PARPORT
  5. select HAVE_PATA_PLATFORM
  6. select CLKDEV_LOOKUP
  7. select HAVE_IDE if HAS_IOPORT_MAP
  8. select HAVE_MEMBLOCK
  9. select HAVE_MEMBLOCK_NODE_MAP
  10. select ARCH_DISCARD_MEMBLOCK
  11. select HAVE_OPROFILE
  12. select HAVE_GENERIC_DMA_COHERENT
  13. select HAVE_ARCH_TRACEHOOK
  14. select HAVE_DMA_API_DEBUG
  15. select HAVE_PERF_EVENTS
  16. select HAVE_DEBUG_BUGVERBOSE
  17. select ARCH_HAVE_CUSTOM_GPIO_H
  18. select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
  19. select ARCH_HAS_GCOV_PROFILE_ALL
  20. select PERF_USE_VMALLOC
  21. select HAVE_DEBUG_KMEMLEAK
  22. select HAVE_KERNEL_GZIP
  23. select CPU_NO_EFFICIENT_FFS
  24. select HAVE_KERNEL_BZIP2
  25. select HAVE_KERNEL_LZMA
  26. select HAVE_KERNEL_XZ
  27. select HAVE_KERNEL_LZO
  28. select HAVE_UID16
  29. select ARCH_WANT_IPC_PARSE_VERSION
  30. select HAVE_SYSCALL_TRACEPOINTS
  31. select HAVE_REGS_AND_STACK_ACCESS_API
  32. select MAY_HAVE_SPARSE_IRQ
  33. select IRQ_FORCED_THREADING
  34. select RTC_LIB
  35. select GENERIC_ATOMIC64
  36. select GENERIC_IRQ_SHOW
  37. select GENERIC_SMP_IDLE_THREAD
  38. select GENERIC_IDLE_POLL_SETUP
  39. select GENERIC_CLOCKEVENTS
  40. select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  41. select GENERIC_STRNCPY_FROM_USER
  42. select GENERIC_STRNLEN_USER
  43. select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
  44. select MODULES_USE_ELF_RELA
  45. select OLD_SIGSUSPEND
  46. select OLD_SIGACTION
  47. select HAVE_ARCH_AUDITSYSCALL
  48. select HAVE_NMI
  49. help
  50. The SuperH is a RISC processor targeted for use in embedded systems
  51. and consumer electronics; it was also used in the Sega Dreamcast
  52. gaming console. The SuperH port has a home page at
  53. <http://www.linux-sh.org/>.
  54. config SUPERH32
  55. def_bool ARCH = "sh"
  56. select HAVE_KPROBES
  57. select HAVE_KRETPROBES
  58. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  59. select HAVE_FUNCTION_TRACER
  60. select HAVE_FTRACE_MCOUNT_RECORD
  61. select HAVE_DYNAMIC_FTRACE
  62. select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  63. select ARCH_WANT_IPC_PARSE_VERSION
  64. select HAVE_FUNCTION_GRAPH_TRACER
  65. select HAVE_ARCH_KGDB
  66. select HAVE_HW_BREAKPOINT
  67. select HAVE_MIXED_BREAKPOINTS_REGS
  68. select PERF_EVENTS
  69. select ARCH_HIBERNATION_POSSIBLE if MMU
  70. select SPARSE_IRQ
  71. select HAVE_CC_STACKPROTECTOR
  72. config SUPERH64
  73. def_bool ARCH = "sh64"
  74. select HAVE_EXIT_THREAD
  75. select KALLSYMS
  76. config ARCH_DEFCONFIG
  77. string
  78. default "arch/sh/configs/shx3_defconfig" if SUPERH32
  79. default "arch/sh/configs/cayman_defconfig" if SUPERH64
  80. config RWSEM_GENERIC_SPINLOCK
  81. def_bool y
  82. config RWSEM_XCHGADD_ALGORITHM
  83. bool
  84. config GENERIC_BUG
  85. def_bool y
  86. depends on BUG && SUPERH32
  87. config GENERIC_CSUM
  88. def_bool y
  89. depends on SUPERH64
  90. config GENERIC_HWEIGHT
  91. def_bool y
  92. config GENERIC_CALIBRATE_DELAY
  93. bool
  94. config GENERIC_LOCKBREAK
  95. def_bool y
  96. depends on SMP && PREEMPT
  97. config ARCH_SUSPEND_POSSIBLE
  98. def_bool n
  99. config ARCH_HIBERNATION_POSSIBLE
  100. def_bool n
  101. config SYS_SUPPORTS_APM_EMULATION
  102. bool
  103. select ARCH_SUSPEND_POSSIBLE
  104. config SYS_SUPPORTS_HUGETLBFS
  105. bool
  106. config SYS_SUPPORTS_SMP
  107. bool
  108. config SYS_SUPPORTS_NUMA
  109. bool
  110. config SYS_SUPPORTS_PCI
  111. bool
  112. config STACKTRACE_SUPPORT
  113. def_bool y
  114. config LOCKDEP_SUPPORT
  115. def_bool y
  116. config ARCH_HAS_ILOG2_U32
  117. def_bool n
  118. config ARCH_HAS_ILOG2_U64
  119. def_bool n
  120. config NO_IOPORT_MAP
  121. def_bool !PCI
  122. depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
  123. !SH_HP6XX && !SH_SOLUTION_ENGINE
  124. config IO_TRAPPED
  125. bool
  126. config SWAP_IO_SPACE
  127. bool
  128. config DMA_COHERENT
  129. bool
  130. config DMA_NONCOHERENT
  131. def_bool !DMA_COHERENT
  132. config NEED_DMA_MAP_STATE
  133. def_bool DMA_NONCOHERENT
  134. config NEED_SG_DMA_LENGTH
  135. def_bool y
  136. config PGTABLE_LEVELS
  137. default 3 if X2TLB
  138. default 2
  139. source "init/Kconfig"
  140. source "kernel/Kconfig.freezer"
  141. menu "System type"
  142. #
  143. # Processor families
  144. #
  145. config CPU_SH2
  146. bool
  147. select SH_INTC
  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 SH_INTC
  157. select SYS_SUPPORTS_SH_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 SH_INTC
  164. select SYS_SUPPORTS_SH_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_SH_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. 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_SH_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_SH_MTU2
  210. config CPU_SUBTYPE_SH7203
  211. bool "Support SH7203 processor"
  212. select CPU_SH2A
  213. select CPU_HAS_FPU
  214. select SYS_SUPPORTS_SH_CMT
  215. select SYS_SUPPORTS_SH_MTU2
  216. select ARCH_WANT_OPTIONAL_GPIOLIB
  217. select PINCTRL
  218. config CPU_SUBTYPE_SH7206
  219. bool "Support SH7206 processor"
  220. select CPU_SH2A
  221. select SYS_SUPPORTS_SH_CMT
  222. select SYS_SUPPORTS_SH_MTU2
  223. config CPU_SUBTYPE_SH7263
  224. bool "Support SH7263 processor"
  225. select CPU_SH2A
  226. select CPU_HAS_FPU
  227. select SYS_SUPPORTS_SH_CMT
  228. select SYS_SUPPORTS_SH_MTU2
  229. config CPU_SUBTYPE_SH7264
  230. bool "Support SH7264 processor"
  231. select CPU_SH2A
  232. select CPU_HAS_FPU
  233. select SYS_SUPPORTS_SH_CMT
  234. select SYS_SUPPORTS_SH_MTU2
  235. select PINCTRL
  236. config CPU_SUBTYPE_SH7269
  237. bool "Support SH7269 processor"
  238. select CPU_SH2A
  239. select CPU_HAS_FPU
  240. select SYS_SUPPORTS_SH_CMT
  241. select SYS_SUPPORTS_SH_MTU2
  242. select PINCTRL
  243. config CPU_SUBTYPE_MXG
  244. bool "Support MX-G processor"
  245. select CPU_SH2A
  246. select SYS_SUPPORTS_SH_MTU2
  247. help
  248. Select MX-G if running on an R8A03022BG part.
  249. # SH-3 Processor Support
  250. config CPU_SUBTYPE_SH7705
  251. bool "Support SH7705 processor"
  252. select CPU_SH3
  253. config CPU_SUBTYPE_SH7706
  254. bool "Support SH7706 processor"
  255. select CPU_SH3
  256. help
  257. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  258. config CPU_SUBTYPE_SH7707
  259. bool "Support SH7707 processor"
  260. select CPU_SH3
  261. help
  262. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  263. config CPU_SUBTYPE_SH7708
  264. bool "Support SH7708 processor"
  265. select CPU_SH3
  266. help
  267. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  268. if you have a 100 Mhz SH-3 HD6417708R CPU.
  269. config CPU_SUBTYPE_SH7709
  270. bool "Support SH7709 processor"
  271. select CPU_SH3
  272. help
  273. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  274. config CPU_SUBTYPE_SH7710
  275. bool "Support SH7710 processor"
  276. select CPU_SH3
  277. select CPU_HAS_DSP
  278. help
  279. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  280. config CPU_SUBTYPE_SH7712
  281. bool "Support SH7712 processor"
  282. select CPU_SH3
  283. select CPU_HAS_DSP
  284. help
  285. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  286. config CPU_SUBTYPE_SH7720
  287. bool "Support SH7720 processor"
  288. select CPU_SH3
  289. select CPU_HAS_DSP
  290. select SYS_SUPPORTS_SH_CMT
  291. select ARCH_WANT_OPTIONAL_GPIOLIB
  292. select USB_OHCI_SH if USB_OHCI_HCD
  293. select PINCTRL
  294. help
  295. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  296. config CPU_SUBTYPE_SH7721
  297. bool "Support SH7721 processor"
  298. select CPU_SH3
  299. select CPU_HAS_DSP
  300. select SYS_SUPPORTS_SH_CMT
  301. select USB_OHCI_SH if USB_OHCI_HCD
  302. help
  303. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  304. # SH-4 Processor Support
  305. config CPU_SUBTYPE_SH7750
  306. bool "Support SH7750 processor"
  307. select CPU_SH4
  308. help
  309. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  310. config CPU_SUBTYPE_SH7091
  311. bool "Support SH7091 processor"
  312. select CPU_SH4
  313. help
  314. Select SH7091 if you have an SH-4 based Sega device (such as
  315. the Dreamcast, Naomi, and Naomi 2).
  316. config CPU_SUBTYPE_SH7750R
  317. bool "Support SH7750R processor"
  318. select CPU_SH4
  319. config CPU_SUBTYPE_SH7750S
  320. bool "Support SH7750S processor"
  321. select CPU_SH4
  322. config CPU_SUBTYPE_SH7751
  323. bool "Support SH7751 processor"
  324. select CPU_SH4
  325. help
  326. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  327. or if you have a HD6417751R CPU.
  328. config CPU_SUBTYPE_SH7751R
  329. bool "Support SH7751R processor"
  330. select CPU_SH4
  331. config CPU_SUBTYPE_SH7760
  332. bool "Support SH7760 processor"
  333. select CPU_SH4
  334. config CPU_SUBTYPE_SH4_202
  335. bool "Support SH4-202 processor"
  336. select CPU_SH4
  337. # SH-4A Processor Support
  338. config CPU_SUBTYPE_SH7723
  339. bool "Support SH7723 processor"
  340. select CPU_SH4A
  341. select CPU_SHX2
  342. select ARCH_SHMOBILE
  343. select ARCH_SPARSEMEM_ENABLE
  344. select SYS_SUPPORTS_SH_CMT
  345. select ARCH_WANT_OPTIONAL_GPIOLIB
  346. select PINCTRL
  347. help
  348. Select SH7723 if you have an SH-MobileR2 CPU.
  349. config CPU_SUBTYPE_SH7724
  350. bool "Support SH7724 processor"
  351. select CPU_SH4A
  352. select CPU_SHX2
  353. select ARCH_SHMOBILE
  354. select ARCH_SPARSEMEM_ENABLE
  355. select SYS_SUPPORTS_SH_CMT
  356. select ARCH_WANT_OPTIONAL_GPIOLIB
  357. select PINCTRL
  358. help
  359. Select SH7724 if you have an SH-MobileR2R CPU.
  360. config CPU_SUBTYPE_SH7734
  361. bool "Support SH7734 processor"
  362. select CPU_SH4A
  363. select CPU_SHX2
  364. select ARCH_WANT_OPTIONAL_GPIOLIB
  365. select PINCTRL
  366. help
  367. Select SH7734 if you have a SH4A SH7734 CPU.
  368. config CPU_SUBTYPE_SH7757
  369. bool "Support SH7757 processor"
  370. select CPU_SH4A
  371. select CPU_SHX2
  372. select ARCH_WANT_OPTIONAL_GPIOLIB
  373. select PINCTRL
  374. help
  375. Select SH7757 if you have a SH4A SH7757 CPU.
  376. config CPU_SUBTYPE_SH7763
  377. bool "Support SH7763 processor"
  378. select CPU_SH4A
  379. select USB_OHCI_SH if USB_OHCI_HCD
  380. help
  381. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  382. config CPU_SUBTYPE_SH7770
  383. bool "Support SH7770 processor"
  384. select CPU_SH4A
  385. config CPU_SUBTYPE_SH7780
  386. bool "Support SH7780 processor"
  387. select CPU_SH4A
  388. config CPU_SUBTYPE_SH7785
  389. bool "Support SH7785 processor"
  390. select CPU_SH4A
  391. select CPU_SHX2
  392. select ARCH_SPARSEMEM_ENABLE
  393. select SYS_SUPPORTS_NUMA
  394. select ARCH_WANT_OPTIONAL_GPIOLIB
  395. select PINCTRL
  396. config CPU_SUBTYPE_SH7786
  397. bool "Support SH7786 processor"
  398. select CPU_SH4A
  399. select CPU_SHX3
  400. select CPU_HAS_PTEAEX
  401. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  402. select ARCH_WANT_OPTIONAL_GPIOLIB
  403. select USB_OHCI_SH if USB_OHCI_HCD
  404. select USB_EHCI_SH if USB_EHCI_HCD
  405. select PINCTRL
  406. config CPU_SUBTYPE_SHX3
  407. bool "Support SH-X3 processor"
  408. select CPU_SH4A
  409. select CPU_SHX3
  410. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  411. select ARCH_REQUIRE_GPIOLIB
  412. select PINCTRL
  413. # SH4AL-DSP Processor Support
  414. config CPU_SUBTYPE_SH7343
  415. bool "Support SH7343 processor"
  416. select CPU_SH4AL_DSP
  417. select ARCH_SHMOBILE
  418. select SYS_SUPPORTS_SH_CMT
  419. config CPU_SUBTYPE_SH7722
  420. bool "Support SH7722 processor"
  421. select CPU_SH4AL_DSP
  422. select CPU_SHX2
  423. select ARCH_SHMOBILE
  424. select ARCH_SPARSEMEM_ENABLE
  425. select SYS_SUPPORTS_NUMA
  426. select SYS_SUPPORTS_SH_CMT
  427. select ARCH_WANT_OPTIONAL_GPIOLIB
  428. select PINCTRL
  429. config CPU_SUBTYPE_SH7366
  430. bool "Support SH7366 processor"
  431. select CPU_SH4AL_DSP
  432. select CPU_SHX2
  433. select ARCH_SHMOBILE
  434. select ARCH_SPARSEMEM_ENABLE
  435. select SYS_SUPPORTS_NUMA
  436. select SYS_SUPPORTS_SH_CMT
  437. endchoice
  438. endif
  439. if SUPERH64
  440. choice
  441. prompt "Processor sub-type selection"
  442. # SH-5 Processor Support
  443. config CPU_SUBTYPE_SH5_101
  444. bool "Support SH5-101 processor"
  445. select CPU_SH5
  446. config CPU_SUBTYPE_SH5_103
  447. bool "Support SH5-103 processor"
  448. select CPU_SH5
  449. endchoice
  450. endif
  451. source "arch/sh/mm/Kconfig"
  452. source "arch/sh/Kconfig.cpu"
  453. source "arch/sh/boards/Kconfig"
  454. menu "Timer and clock configuration"
  455. config SH_PCLK_FREQ
  456. int "Peripheral clock frequency (in Hz)"
  457. depends on SH_CLK_CPG_LEGACY
  458. default "31250000" if CPU_SUBTYPE_SH7619
  459. default "33333333" if CPU_SUBTYPE_SH7770 || \
  460. CPU_SUBTYPE_SH7760 || \
  461. CPU_SUBTYPE_SH7705 || \
  462. CPU_SUBTYPE_SH7203 || \
  463. CPU_SUBTYPE_SH7206 || \
  464. CPU_SUBTYPE_SH7263 || \
  465. CPU_SUBTYPE_MXG
  466. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  467. default "66000000" if CPU_SUBTYPE_SH4_202
  468. default "50000000"
  469. help
  470. This option is used to specify the peripheral clock frequency.
  471. This is necessary for determining the reference clock value on
  472. platforms lacking an RTC.
  473. config SH_CLK_CPG
  474. def_bool y
  475. config SH_CLK_CPG_LEGACY
  476. depends on SH_CLK_CPG
  477. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  478. !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
  479. !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
  480. !CPU_SUBTYPE_SH7269
  481. endmenu
  482. menu "CPU Frequency scaling"
  483. source "drivers/cpufreq/Kconfig"
  484. endmenu
  485. source "arch/sh/drivers/Kconfig"
  486. endmenu
  487. menu "Kernel features"
  488. source kernel/Kconfig.hz
  489. config KEXEC
  490. bool "kexec system call (EXPERIMENTAL)"
  491. depends on SUPERH32 && MMU
  492. select KEXEC_CORE
  493. help
  494. kexec is a system call that implements the ability to shutdown your
  495. current kernel, and to start another kernel. It is like a reboot
  496. but it is independent of the system firmware. And like a reboot
  497. you can start any kernel with it, not just Linux.
  498. The name comes from the similarity to the exec system call.
  499. It is an ongoing process to be certain the hardware in a machine
  500. is properly shutdown, so do not be surprised if this code does not
  501. initially work for you. As of this writing the exact hardware
  502. interface is strongly in flux, so no good recommendation can be
  503. made.
  504. config CRASH_DUMP
  505. bool "kernel crash dumps (EXPERIMENTAL)"
  506. depends on SUPERH32 && BROKEN_ON_SMP
  507. help
  508. Generate crash dump after being started by kexec.
  509. This should be normally only set in special crash dump kernels
  510. which are loaded in the main kernel with kexec-tools into
  511. a specially reserved region and then later executed after
  512. a crash by kdump/kexec. The crash dump kernel must be compiled
  513. to a memory address not used by the main kernel using
  514. PHYSICAL_START.
  515. For more details see Documentation/kdump/kdump.txt
  516. config KEXEC_JUMP
  517. bool "kexec jump (EXPERIMENTAL)"
  518. depends on SUPERH32 && KEXEC && HIBERNATION
  519. help
  520. Jump between original kernel and kexeced kernel and invoke
  521. code via KEXEC
  522. config PHYSICAL_START
  523. hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
  524. default MEMORY_START
  525. ---help---
  526. This gives the physical address where the kernel is loaded
  527. and is ordinarily the same as MEMORY_START.
  528. Different values are primarily used in the case of kexec on panic
  529. where the fail safe kernel needs to run at a different address
  530. than the panic-ed kernel.
  531. config SECCOMP
  532. bool "Enable seccomp to safely compute untrusted bytecode"
  533. depends on PROC_FS
  534. help
  535. This kernel feature is useful for number crunching applications
  536. that may need to compute untrusted bytecode during their
  537. execution. By using pipes or other transports made available to
  538. the process as file descriptors supporting the read/write
  539. syscalls, it's possible to isolate those applications in
  540. their own address space using seccomp. Once seccomp is
  541. enabled via prctl, it cannot be disabled and the task is only
  542. allowed to execute a few safe syscalls defined by each seccomp
  543. mode.
  544. If unsure, say N.
  545. config SMP
  546. bool "Symmetric multi-processing support"
  547. depends on SYS_SUPPORTS_SMP
  548. ---help---
  549. This enables support for systems with more than one CPU. If you have
  550. a system with only one CPU, say N. If you have a system with more
  551. than one CPU, say Y.
  552. If you say N here, the kernel will run on uni- and multiprocessor
  553. machines, but will use only one CPU of a multiprocessor machine. If
  554. you say Y here, the kernel will run on many, but not all,
  555. uniprocessor machines. On a uniprocessor machine, the kernel
  556. will run faster if you say N here.
  557. People using multiprocessor machines who say Y here should also say
  558. Y to "Enhanced Real Time Clock Support", below.
  559. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  560. available at <http://www.tldp.org/docs.html#howto>.
  561. If you don't know what to do here, say N.
  562. config NR_CPUS
  563. int "Maximum number of CPUs (2-32)"
  564. range 2 32
  565. depends on SMP
  566. default "4" if CPU_SUBTYPE_SHX3
  567. default "2"
  568. help
  569. This allows you to specify the maximum number of CPUs which this
  570. kernel will support. The maximum supported value is 32 and the
  571. minimum value which makes sense is 2.
  572. This is purely to save memory - each supported CPU adds
  573. approximately eight kilobytes to the kernel image.
  574. config HOTPLUG_CPU
  575. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  576. depends on SMP
  577. help
  578. Say Y here to experiment with turning CPUs off and on. CPUs
  579. can be controlled through /sys/devices/system/cpu.
  580. source "kernel/Kconfig.preempt"
  581. config GUSA
  582. def_bool y
  583. depends on !SMP && SUPERH32
  584. help
  585. This enables support for gUSA (general UserSpace Atomicity).
  586. This is the default implementation for both UP and non-ll/sc
  587. CPUs, and is used by the libc, amongst others.
  588. For additional information, design information can be found
  589. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  590. This should only be disabled for special cases where alternate
  591. atomicity implementations exist.
  592. config GUSA_RB
  593. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  594. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  595. help
  596. Enabling this option will allow the kernel to implement some
  597. atomic operations using a software implementation of load-locked/
  598. store-conditional (LLSC). On machines which do not have hardware
  599. LLSC, this should be more efficient than the other alternative of
  600. disabling interrupts around the atomic sequence.
  601. config HW_PERF_EVENTS
  602. bool "Enable hardware performance counter support for perf events"
  603. depends on PERF_EVENTS && CPU_HAS_PMU
  604. default y
  605. help
  606. Enable hardware performance counter support for perf events. If
  607. disabled, perf events will use software events only.
  608. source "drivers/sh/Kconfig"
  609. endmenu
  610. menu "Boot options"
  611. config ZERO_PAGE_OFFSET
  612. hex
  613. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  614. SH_7751_SOLUTION_ENGINE
  615. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  616. default "0x00002000" if PAGE_SIZE_8KB
  617. default "0x00001000"
  618. help
  619. This sets the default offset of zero page.
  620. config BOOT_LINK_OFFSET
  621. hex
  622. default "0x00210000" if SH_SHMIN
  623. default "0x00400000" if SH_CAYMAN
  624. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  625. default "0x009e0000" if SH_TITAN
  626. default "0x01800000" if SH_SDK7780
  627. default "0x02000000" if SH_EDOSK7760
  628. default "0x00800000"
  629. help
  630. This option allows you to set the link address offset of the zImage.
  631. This can be useful if you are on a board which has a small amount of
  632. memory.
  633. config ENTRY_OFFSET
  634. hex
  635. default "0x00001000" if PAGE_SIZE_4KB
  636. default "0x00002000" if PAGE_SIZE_8KB
  637. default "0x00004000" if PAGE_SIZE_16KB
  638. default "0x00010000" if PAGE_SIZE_64KB
  639. default "0x00000000"
  640. config ROMIMAGE_MMCIF
  641. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  642. depends on CPU_SUBTYPE_SH7724
  643. help
  644. Say Y here to include experimental MMCIF loading code in
  645. romImage. With this enabled it is possible to write the romImage
  646. kernel image to an MMC card and boot the kernel straight from
  647. the reset vector. At reset the processor Mask ROM will load the
  648. first part of the romImage which in turn loads the rest the kernel
  649. image to RAM using the MMCIF hardware block.
  650. choice
  651. prompt "Kernel command line"
  652. optional
  653. default CMDLINE_OVERWRITE
  654. help
  655. Setting this option allows the kernel command line arguments
  656. to be set.
  657. config CMDLINE_OVERWRITE
  658. bool "Overwrite bootloader kernel arguments"
  659. help
  660. Given string will overwrite any arguments passed in by
  661. a bootloader.
  662. config CMDLINE_EXTEND
  663. bool "Extend bootloader kernel arguments"
  664. help
  665. Given string will be concatenated with arguments passed in
  666. by a bootloader.
  667. endchoice
  668. config CMDLINE
  669. string "Kernel command line arguments string"
  670. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  671. default "console=ttySC1,115200"
  672. endmenu
  673. menu "Bus options"
  674. config SUPERHYWAY
  675. tristate "SuperHyway Bus support"
  676. depends on CPU_SUBTYPE_SH4_202
  677. config MAPLE
  678. bool "Maple Bus support"
  679. depends on SH_DREAMCAST
  680. help
  681. The Maple Bus is SEGA's serial communication bus for peripherals
  682. on the Dreamcast. Without this bus support you won't be able to
  683. get your Dreamcast keyboard etc to work, so most users
  684. probably want to say 'Y' here, unless you are only using the
  685. Dreamcast with a serial line terminal or a remote network
  686. connection.
  687. config PCI
  688. bool "PCI support"
  689. depends on SYS_SUPPORTS_PCI
  690. select PCI_DOMAINS
  691. select GENERIC_PCI_IOMAP
  692. select NO_GENERIC_PCI_IOPORT_MAP
  693. help
  694. Find out whether you have a PCI motherboard. PCI is the name of a
  695. bus system, i.e. the way the CPU talks to the other stuff inside
  696. your box. If you have PCI, say Y, otherwise N.
  697. config PCI_DOMAINS
  698. bool
  699. source "drivers/pci/Kconfig"
  700. source "drivers/pcmcia/Kconfig"
  701. endmenu
  702. menu "Executable file formats"
  703. source "fs/Kconfig.binfmt"
  704. endmenu
  705. menu "Power management options (EXPERIMENTAL)"
  706. source "kernel/power/Kconfig"
  707. source "drivers/cpuidle/Kconfig"
  708. endmenu
  709. source "net/Kconfig"
  710. source "drivers/Kconfig"
  711. source "fs/Kconfig"
  712. source "arch/sh/Kconfig.debug"
  713. source "security/Kconfig"
  714. source "crypto/Kconfig"
  715. source "lib/Kconfig"