Kconfig 21 KB

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  1. config SUPERH
  2. def_bool y
  3. select ARCH_MIGHT_HAVE_PC_PARPORT
  4. select HAVE_PATA_PLATFORM
  5. select CLKDEV_LOOKUP
  6. select HAVE_IDE if HAS_IOPORT_MAP
  7. select HAVE_MEMBLOCK
  8. select HAVE_MEMBLOCK_NODE_MAP
  9. select ARCH_DISCARD_MEMBLOCK
  10. select HAVE_OPROFILE
  11. select HAVE_GENERIC_DMA_COHERENT
  12. select HAVE_ARCH_TRACEHOOK
  13. select HAVE_DMA_API_DEBUG
  14. select HAVE_DMA_ATTRS
  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 HAVE_KERNEL_BZIP2
  24. select HAVE_KERNEL_LZMA
  25. select HAVE_KERNEL_XZ
  26. select HAVE_KERNEL_LZO
  27. select HAVE_UID16
  28. select ARCH_WANT_IPC_PARSE_VERSION
  29. select HAVE_SYSCALL_TRACEPOINTS
  30. select HAVE_REGS_AND_STACK_ACCESS_API
  31. select MAY_HAVE_SPARSE_IRQ
  32. select IRQ_FORCED_THREADING
  33. select RTC_LIB
  34. select GENERIC_ATOMIC64
  35. select GENERIC_IRQ_SHOW
  36. select GENERIC_SMP_IDLE_THREAD
  37. select GENERIC_IDLE_POLL_SETUP
  38. select GENERIC_CLOCKEVENTS
  39. select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  40. select GENERIC_STRNCPY_FROM_USER
  41. select GENERIC_STRNLEN_USER
  42. select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
  43. select MODULES_USE_ELF_RELA
  44. select OLD_SIGSUSPEND
  45. select OLD_SIGACTION
  46. select HAVE_ARCH_AUDITSYSCALL
  47. help
  48. The SuperH is a RISC processor targeted for use in embedded systems
  49. and consumer electronics; it was also used in the Sega Dreamcast
  50. gaming console. The SuperH port has a home page at
  51. <http://www.linux-sh.org/>.
  52. config SUPERH32
  53. def_bool ARCH = "sh"
  54. select HAVE_KPROBES
  55. select HAVE_KRETPROBES
  56. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  57. select HAVE_FUNCTION_TRACER
  58. select HAVE_FTRACE_MCOUNT_RECORD
  59. select HAVE_DYNAMIC_FTRACE
  60. select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  61. select ARCH_WANT_IPC_PARSE_VERSION
  62. select HAVE_FUNCTION_GRAPH_TRACER
  63. select HAVE_ARCH_KGDB
  64. select HAVE_HW_BREAKPOINT
  65. select HAVE_MIXED_BREAKPOINTS_REGS
  66. select PERF_EVENTS
  67. select ARCH_HIBERNATION_POSSIBLE if MMU
  68. select SPARSE_IRQ
  69. select HAVE_CC_STACKPROTECTOR
  70. config SUPERH64
  71. def_bool ARCH = "sh64"
  72. select KALLSYMS
  73. config ARCH_DEFCONFIG
  74. string
  75. default "arch/sh/configs/shx3_defconfig" if SUPERH32
  76. default "arch/sh/configs/cayman_defconfig" if SUPERH64
  77. config RWSEM_GENERIC_SPINLOCK
  78. def_bool y
  79. config RWSEM_XCHGADD_ALGORITHM
  80. bool
  81. config GENERIC_BUG
  82. def_bool y
  83. depends on BUG && SUPERH32
  84. config GENERIC_CSUM
  85. def_bool y
  86. depends on SUPERH64
  87. config GENERIC_HWEIGHT
  88. def_bool y
  89. config GENERIC_CALIBRATE_DELAY
  90. bool
  91. config GENERIC_LOCKBREAK
  92. def_bool y
  93. depends on SMP && PREEMPT
  94. config ARCH_SUSPEND_POSSIBLE
  95. def_bool n
  96. config ARCH_HIBERNATION_POSSIBLE
  97. def_bool n
  98. config SYS_SUPPORTS_APM_EMULATION
  99. bool
  100. select ARCH_SUSPEND_POSSIBLE
  101. config SYS_SUPPORTS_HUGETLBFS
  102. bool
  103. config SYS_SUPPORTS_SMP
  104. bool
  105. config SYS_SUPPORTS_NUMA
  106. bool
  107. config SYS_SUPPORTS_PCI
  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 NO_IOPORT_MAP
  120. def_bool !PCI
  121. depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
  122. !SH_HP6XX && !SH_SOLUTION_ENGINE
  123. config IO_TRAPPED
  124. bool
  125. config SWAP_IO_SPACE
  126. bool
  127. config DMA_COHERENT
  128. bool
  129. config DMA_NONCOHERENT
  130. def_bool !DMA_COHERENT
  131. config NEED_DMA_MAP_STATE
  132. def_bool DMA_NONCOHERENT
  133. config NEED_SG_DMA_LENGTH
  134. def_bool y
  135. config PGTABLE_LEVELS
  136. default 3 if X2TLB
  137. default 2
  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. select SH_INTC
  147. config CPU_SH2A
  148. bool
  149. select CPU_SH2
  150. select UNCACHED_MAPPING
  151. config CPU_SH3
  152. bool
  153. select CPU_HAS_INTEVT
  154. select CPU_HAS_SR_RB
  155. select SH_INTC
  156. select SYS_SUPPORTS_SH_TMU
  157. config CPU_SH4
  158. bool
  159. select CPU_HAS_INTEVT
  160. select CPU_HAS_SR_RB
  161. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  162. select SH_INTC
  163. select SYS_SUPPORTS_SH_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_SH_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. config CPU_HAS_PMU
  189. depends on CPU_SH4 || CPU_SH4A
  190. default y
  191. bool
  192. if SUPERH32
  193. choice
  194. prompt "Processor sub-type selection"
  195. #
  196. # Processor subtypes
  197. #
  198. # SH-2 Processor Support
  199. config CPU_SUBTYPE_SH7619
  200. bool "Support SH7619 processor"
  201. select CPU_SH2
  202. select SYS_SUPPORTS_SH_CMT
  203. # SH-2A Processor Support
  204. config CPU_SUBTYPE_SH7201
  205. bool "Support SH7201 processor"
  206. select CPU_SH2A
  207. select CPU_HAS_FPU
  208. select SYS_SUPPORTS_SH_MTU2
  209. config CPU_SUBTYPE_SH7203
  210. bool "Support SH7203 processor"
  211. select CPU_SH2A
  212. select CPU_HAS_FPU
  213. select SYS_SUPPORTS_SH_CMT
  214. select SYS_SUPPORTS_SH_MTU2
  215. select ARCH_WANT_OPTIONAL_GPIOLIB
  216. select PINCTRL
  217. config CPU_SUBTYPE_SH7206
  218. bool "Support SH7206 processor"
  219. select CPU_SH2A
  220. select SYS_SUPPORTS_SH_CMT
  221. select SYS_SUPPORTS_SH_MTU2
  222. config CPU_SUBTYPE_SH7263
  223. bool "Support SH7263 processor"
  224. select CPU_SH2A
  225. select CPU_HAS_FPU
  226. select SYS_SUPPORTS_SH_CMT
  227. select SYS_SUPPORTS_SH_MTU2
  228. config CPU_SUBTYPE_SH7264
  229. bool "Support SH7264 processor"
  230. select CPU_SH2A
  231. select CPU_HAS_FPU
  232. select SYS_SUPPORTS_SH_CMT
  233. select SYS_SUPPORTS_SH_MTU2
  234. select PINCTRL
  235. config CPU_SUBTYPE_SH7269
  236. bool "Support SH7269 processor"
  237. select CPU_SH2A
  238. select CPU_HAS_FPU
  239. select SYS_SUPPORTS_SH_CMT
  240. select SYS_SUPPORTS_SH_MTU2
  241. select PINCTRL
  242. config CPU_SUBTYPE_MXG
  243. bool "Support MX-G processor"
  244. select CPU_SH2A
  245. select SYS_SUPPORTS_SH_MTU2
  246. help
  247. Select MX-G if running on an R8A03022BG part.
  248. # SH-3 Processor Support
  249. config CPU_SUBTYPE_SH7705
  250. bool "Support SH7705 processor"
  251. select CPU_SH3
  252. config CPU_SUBTYPE_SH7706
  253. bool "Support SH7706 processor"
  254. select CPU_SH3
  255. help
  256. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  257. config CPU_SUBTYPE_SH7707
  258. bool "Support SH7707 processor"
  259. select CPU_SH3
  260. help
  261. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  262. config CPU_SUBTYPE_SH7708
  263. bool "Support SH7708 processor"
  264. select CPU_SH3
  265. help
  266. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  267. if you have a 100 Mhz SH-3 HD6417708R CPU.
  268. config CPU_SUBTYPE_SH7709
  269. bool "Support SH7709 processor"
  270. select CPU_SH3
  271. help
  272. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  273. config CPU_SUBTYPE_SH7710
  274. bool "Support SH7710 processor"
  275. select CPU_SH3
  276. select CPU_HAS_DSP
  277. help
  278. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  279. config CPU_SUBTYPE_SH7712
  280. bool "Support SH7712 processor"
  281. select CPU_SH3
  282. select CPU_HAS_DSP
  283. help
  284. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  285. config CPU_SUBTYPE_SH7720
  286. bool "Support SH7720 processor"
  287. select CPU_SH3
  288. select CPU_HAS_DSP
  289. select SYS_SUPPORTS_SH_CMT
  290. select ARCH_WANT_OPTIONAL_GPIOLIB
  291. select USB_OHCI_SH if USB_OHCI_HCD
  292. select PINCTRL
  293. help
  294. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  295. config CPU_SUBTYPE_SH7721
  296. bool "Support SH7721 processor"
  297. select CPU_SH3
  298. select CPU_HAS_DSP
  299. select SYS_SUPPORTS_SH_CMT
  300. select USB_OHCI_SH if USB_OHCI_HCD
  301. help
  302. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  303. # SH-4 Processor Support
  304. config CPU_SUBTYPE_SH7750
  305. bool "Support SH7750 processor"
  306. select CPU_SH4
  307. help
  308. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  309. config CPU_SUBTYPE_SH7091
  310. bool "Support SH7091 processor"
  311. select CPU_SH4
  312. help
  313. Select SH7091 if you have an SH-4 based Sega device (such as
  314. the Dreamcast, Naomi, and Naomi 2).
  315. config CPU_SUBTYPE_SH7750R
  316. bool "Support SH7750R processor"
  317. select CPU_SH4
  318. config CPU_SUBTYPE_SH7750S
  319. bool "Support SH7750S processor"
  320. select CPU_SH4
  321. config CPU_SUBTYPE_SH7751
  322. bool "Support SH7751 processor"
  323. select CPU_SH4
  324. help
  325. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  326. or if you have a HD6417751R CPU.
  327. config CPU_SUBTYPE_SH7751R
  328. bool "Support SH7751R processor"
  329. select CPU_SH4
  330. config CPU_SUBTYPE_SH7760
  331. bool "Support SH7760 processor"
  332. select CPU_SH4
  333. config CPU_SUBTYPE_SH4_202
  334. bool "Support SH4-202 processor"
  335. select CPU_SH4
  336. # SH-4A Processor Support
  337. config CPU_SUBTYPE_SH7723
  338. bool "Support SH7723 processor"
  339. select CPU_SH4A
  340. select CPU_SHX2
  341. select ARCH_SHMOBILE
  342. select ARCH_SPARSEMEM_ENABLE
  343. select SYS_SUPPORTS_SH_CMT
  344. select ARCH_WANT_OPTIONAL_GPIOLIB
  345. select PINCTRL
  346. help
  347. Select SH7723 if you have an SH-MobileR2 CPU.
  348. config CPU_SUBTYPE_SH7724
  349. bool "Support SH7724 processor"
  350. select CPU_SH4A
  351. select CPU_SHX2
  352. select ARCH_SHMOBILE
  353. select ARCH_SPARSEMEM_ENABLE
  354. select SYS_SUPPORTS_SH_CMT
  355. select ARCH_WANT_OPTIONAL_GPIOLIB
  356. select PINCTRL
  357. help
  358. Select SH7724 if you have an SH-MobileR2R CPU.
  359. config CPU_SUBTYPE_SH7734
  360. bool "Support SH7734 processor"
  361. select CPU_SH4A
  362. select CPU_SHX2
  363. select ARCH_WANT_OPTIONAL_GPIOLIB
  364. select PINCTRL
  365. help
  366. Select SH7734 if you have a SH4A SH7734 CPU.
  367. config CPU_SUBTYPE_SH7757
  368. bool "Support SH7757 processor"
  369. select CPU_SH4A
  370. select CPU_SHX2
  371. select ARCH_WANT_OPTIONAL_GPIOLIB
  372. select PINCTRL
  373. help
  374. Select SH7757 if you have a SH4A SH7757 CPU.
  375. config CPU_SUBTYPE_SH7763
  376. bool "Support SH7763 processor"
  377. select CPU_SH4A
  378. select USB_OHCI_SH if USB_OHCI_HCD
  379. help
  380. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  381. config CPU_SUBTYPE_SH7770
  382. bool "Support SH7770 processor"
  383. select CPU_SH4A
  384. config CPU_SUBTYPE_SH7780
  385. bool "Support SH7780 processor"
  386. select CPU_SH4A
  387. config CPU_SUBTYPE_SH7785
  388. bool "Support SH7785 processor"
  389. select CPU_SH4A
  390. select CPU_SHX2
  391. select ARCH_SPARSEMEM_ENABLE
  392. select SYS_SUPPORTS_NUMA
  393. select ARCH_WANT_OPTIONAL_GPIOLIB
  394. select PINCTRL
  395. config CPU_SUBTYPE_SH7786
  396. bool "Support SH7786 processor"
  397. select CPU_SH4A
  398. select CPU_SHX3
  399. select CPU_HAS_PTEAEX
  400. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  401. select ARCH_WANT_OPTIONAL_GPIOLIB
  402. select USB_OHCI_SH if USB_OHCI_HCD
  403. select USB_EHCI_SH if USB_EHCI_HCD
  404. select PINCTRL
  405. config CPU_SUBTYPE_SHX3
  406. bool "Support SH-X3 processor"
  407. select CPU_SH4A
  408. select CPU_SHX3
  409. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  410. select ARCH_REQUIRE_GPIOLIB
  411. select PINCTRL
  412. # SH4AL-DSP Processor Support
  413. config CPU_SUBTYPE_SH7343
  414. bool "Support SH7343 processor"
  415. select CPU_SH4AL_DSP
  416. select ARCH_SHMOBILE
  417. select SYS_SUPPORTS_SH_CMT
  418. config CPU_SUBTYPE_SH7722
  419. bool "Support SH7722 processor"
  420. select CPU_SH4AL_DSP
  421. select CPU_SHX2
  422. select ARCH_SHMOBILE
  423. select ARCH_SPARSEMEM_ENABLE
  424. select SYS_SUPPORTS_NUMA
  425. select SYS_SUPPORTS_SH_CMT
  426. select ARCH_WANT_OPTIONAL_GPIOLIB
  427. select PINCTRL
  428. config CPU_SUBTYPE_SH7366
  429. bool "Support SH7366 processor"
  430. select CPU_SH4AL_DSP
  431. select CPU_SHX2
  432. select ARCH_SHMOBILE
  433. select ARCH_SPARSEMEM_ENABLE
  434. select SYS_SUPPORTS_NUMA
  435. select SYS_SUPPORTS_SH_CMT
  436. endchoice
  437. endif
  438. if SUPERH64
  439. choice
  440. prompt "Processor sub-type selection"
  441. # SH-5 Processor Support
  442. config CPU_SUBTYPE_SH5_101
  443. bool "Support SH5-101 processor"
  444. select CPU_SH5
  445. config CPU_SUBTYPE_SH5_103
  446. bool "Support SH5-103 processor"
  447. select CPU_SH5
  448. endchoice
  449. endif
  450. source "arch/sh/mm/Kconfig"
  451. source "arch/sh/Kconfig.cpu"
  452. source "arch/sh/boards/Kconfig"
  453. menu "Timer and clock configuration"
  454. config SH_PCLK_FREQ
  455. int "Peripheral clock frequency (in Hz)"
  456. depends on SH_CLK_CPG_LEGACY
  457. default "31250000" if CPU_SUBTYPE_SH7619
  458. default "33333333" if CPU_SUBTYPE_SH7770 || \
  459. CPU_SUBTYPE_SH7760 || \
  460. CPU_SUBTYPE_SH7705 || \
  461. CPU_SUBTYPE_SH7203 || \
  462. CPU_SUBTYPE_SH7206 || \
  463. CPU_SUBTYPE_SH7263 || \
  464. CPU_SUBTYPE_MXG
  465. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  466. default "66000000" if CPU_SUBTYPE_SH4_202
  467. default "50000000"
  468. help
  469. This option is used to specify the peripheral clock frequency.
  470. This is necessary for determining the reference clock value on
  471. platforms lacking an RTC.
  472. config SH_CLK_CPG
  473. def_bool y
  474. config SH_CLK_CPG_LEGACY
  475. depends on SH_CLK_CPG
  476. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  477. !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
  478. !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
  479. !CPU_SUBTYPE_SH7269
  480. endmenu
  481. menu "CPU Frequency scaling"
  482. source "drivers/cpufreq/Kconfig"
  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 && 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. As of this writing the exact hardware
  500. interface is strongly in flux, so no good recommendation can be
  501. made.
  502. config CRASH_DUMP
  503. bool "kernel crash dumps (EXPERIMENTAL)"
  504. depends on SUPERH32 && 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. PHYSICAL_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
  517. help
  518. Jump between original kernel and kexeced kernel and invoke
  519. code via KEXEC
  520. config PHYSICAL_START
  521. hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
  522. default MEMORY_START
  523. ---help---
  524. This gives the physical address where the kernel is loaded
  525. and is ordinarily the same as MEMORY_START.
  526. Different values are primarily used in the case of kexec on panic
  527. where the fail safe kernel needs to run at a different address
  528. than the panic-ed kernel.
  529. config SECCOMP
  530. bool "Enable seccomp to safely compute untrusted bytecode"
  531. depends on PROC_FS
  532. help
  533. This kernel feature is useful for number crunching applications
  534. that may need to compute untrusted bytecode during their
  535. execution. By using pipes or other transports made available to
  536. the process as file descriptors supporting the read/write
  537. syscalls, it's possible to isolate those applications in
  538. their own address space using seccomp. Once seccomp is
  539. enabled via prctl, it cannot be disabled and the task is only
  540. allowed to execute a few safe syscalls defined by each seccomp
  541. mode.
  542. If unsure, say N.
  543. config SMP
  544. bool "Symmetric multi-processing support"
  545. depends on SYS_SUPPORTS_SMP
  546. ---help---
  547. This enables support for systems with more than one CPU. If you have
  548. a system with only one CPU, say N. If you have a system with more
  549. than one CPU, say Y.
  550. If you say N here, the kernel will run on uni- and multiprocessor
  551. machines, but will use only one CPU of a multiprocessor machine. If
  552. you say Y here, the kernel will run on many, but not all,
  553. uniprocessor machines. On a uniprocessor machine, the kernel
  554. will run faster if you say N here.
  555. People using multiprocessor machines who say Y here should also say
  556. Y to "Enhanced Real Time Clock Support", below.
  557. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  558. available at <http://www.tldp.org/docs.html#howto>.
  559. If you don't know what to do here, say N.
  560. config NR_CPUS
  561. int "Maximum number of CPUs (2-32)"
  562. range 2 32
  563. depends on SMP
  564. default "4" if CPU_SUBTYPE_SHX3
  565. default "2"
  566. help
  567. This allows you to specify the maximum number of CPUs which this
  568. kernel will support. The maximum supported value is 32 and the
  569. minimum value which makes sense is 2.
  570. This is purely to save memory - each supported CPU adds
  571. approximately eight kilobytes to the kernel image.
  572. config HOTPLUG_CPU
  573. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  574. depends on SMP
  575. help
  576. Say Y here to experiment with turning CPUs off and on. CPUs
  577. can be controlled through /sys/devices/system/cpu.
  578. source "kernel/Kconfig.preempt"
  579. config GUSA
  580. def_bool y
  581. depends on !SMP && SUPERH32
  582. help
  583. This enables support for gUSA (general UserSpace Atomicity).
  584. This is the default implementation for both UP and non-ll/sc
  585. CPUs, and is used by the libc, amongst others.
  586. For additional information, design information can be found
  587. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  588. This should only be disabled for special cases where alternate
  589. atomicity implementations exist.
  590. config GUSA_RB
  591. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  592. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  593. help
  594. Enabling this option will allow the kernel to implement some
  595. atomic operations using a software implementation of load-locked/
  596. store-conditional (LLSC). On machines which do not have hardware
  597. LLSC, this should be more efficient than the other alternative of
  598. disabling interrupts around the atomic sequence.
  599. config HW_PERF_EVENTS
  600. bool "Enable hardware performance counter support for perf events"
  601. depends on PERF_EVENTS && CPU_HAS_PMU
  602. default y
  603. help
  604. Enable hardware performance counter support for perf events. If
  605. disabled, perf events will use software events only.
  606. source "drivers/sh/Kconfig"
  607. endmenu
  608. menu "Boot options"
  609. config ZERO_PAGE_OFFSET
  610. hex
  611. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  612. SH_7751_SOLUTION_ENGINE
  613. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  614. default "0x00002000" if PAGE_SIZE_8KB
  615. default "0x00001000"
  616. help
  617. This sets the default offset of zero page.
  618. config BOOT_LINK_OFFSET
  619. hex
  620. default "0x00210000" if SH_SHMIN
  621. default "0x00400000" if SH_CAYMAN
  622. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  623. default "0x009e0000" if SH_TITAN
  624. default "0x01800000" if SH_SDK7780
  625. default "0x02000000" if SH_EDOSK7760
  626. default "0x00800000"
  627. help
  628. This option allows you to set the link address offset of the zImage.
  629. This can be useful if you are on a board which has a small amount of
  630. memory.
  631. config ENTRY_OFFSET
  632. hex
  633. default "0x00001000" if PAGE_SIZE_4KB
  634. default "0x00002000" if PAGE_SIZE_8KB
  635. default "0x00004000" if PAGE_SIZE_16KB
  636. default "0x00010000" if PAGE_SIZE_64KB
  637. default "0x00000000"
  638. config ROMIMAGE_MMCIF
  639. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  640. depends on CPU_SUBTYPE_SH7724
  641. help
  642. Say Y here to include experimental MMCIF loading code in
  643. romImage. With this enabled it is possible to write the romImage
  644. kernel image to an MMC card and boot the kernel straight from
  645. the reset vector. At reset the processor Mask ROM will load the
  646. first part of the romImage which in turn loads the rest the kernel
  647. image to RAM using the MMCIF hardware block.
  648. choice
  649. prompt "Kernel command line"
  650. optional
  651. default CMDLINE_OVERWRITE
  652. help
  653. Setting this option allows the kernel command line arguments
  654. to be set.
  655. config CMDLINE_OVERWRITE
  656. bool "Overwrite bootloader kernel arguments"
  657. help
  658. Given string will overwrite any arguments passed in by
  659. a bootloader.
  660. config CMDLINE_EXTEND
  661. bool "Extend bootloader kernel arguments"
  662. help
  663. Given string will be concatenated with arguments passed in
  664. by a bootloader.
  665. endchoice
  666. config CMDLINE
  667. string "Kernel command line arguments string"
  668. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  669. default "console=ttySC1,115200"
  670. endmenu
  671. menu "Bus options"
  672. config SUPERHYWAY
  673. tristate "SuperHyway Bus support"
  674. depends on CPU_SUBTYPE_SH4_202
  675. config MAPLE
  676. bool "Maple Bus support"
  677. depends on SH_DREAMCAST
  678. help
  679. The Maple Bus is SEGA's serial communication bus for peripherals
  680. on the Dreamcast. Without this bus support you won't be able to
  681. get your Dreamcast keyboard etc to work, so most users
  682. probably want to say 'Y' here, unless you are only using the
  683. Dreamcast with a serial line terminal or a remote network
  684. connection.
  685. config PCI
  686. bool "PCI support"
  687. depends on SYS_SUPPORTS_PCI
  688. select PCI_DOMAINS
  689. select GENERIC_PCI_IOMAP
  690. select NO_GENERIC_PCI_IOPORT_MAP
  691. help
  692. Find out whether you have a PCI motherboard. PCI is the name of a
  693. bus system, i.e. the way the CPU talks to the other stuff inside
  694. your box. If you have PCI, say Y, otherwise N.
  695. config PCI_DOMAINS
  696. bool
  697. source "drivers/pci/pcie/Kconfig"
  698. source "drivers/pci/Kconfig"
  699. source "drivers/pcmcia/Kconfig"
  700. source "drivers/pci/hotplug/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"