Kconfig 21 KB

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  1. config SUPERH
  2. def_bool y
  3. select ARCH_MIGHT_HAVE_PC_PARPORT
  4. select EXPERT
  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 PERF_USE_VMALLOC
  20. select HAVE_DEBUG_KMEMLEAK
  21. select HAVE_KERNEL_GZIP
  22. select HAVE_KERNEL_BZIP2
  23. select HAVE_KERNEL_LZMA
  24. select HAVE_KERNEL_XZ
  25. select HAVE_KERNEL_LZO
  26. select HAVE_UID16
  27. select ARCH_WANT_IPC_PARSE_VERSION
  28. select HAVE_SYSCALL_TRACEPOINTS
  29. select HAVE_REGS_AND_STACK_ACCESS_API
  30. select MAY_HAVE_SPARSE_IRQ
  31. select IRQ_FORCED_THREADING
  32. select RTC_LIB
  33. select GENERIC_ATOMIC64
  34. select GENERIC_IRQ_SHOW
  35. select GENERIC_SMP_IDLE_THREAD
  36. select GENERIC_IDLE_POLL_SETUP
  37. select GENERIC_CLOCKEVENTS
  38. select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  39. select GENERIC_STRNCPY_FROM_USER
  40. select GENERIC_STRNLEN_USER
  41. select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
  42. select MODULES_USE_ELF_RELA
  43. select OLD_SIGSUSPEND
  44. select OLD_SIGACTION
  45. select HAVE_ARCH_AUDITSYSCALL
  46. help
  47. The SuperH is a RISC processor targeted for use in embedded systems
  48. and consumer electronics; it was also used in the Sega Dreamcast
  49. gaming console. The SuperH port has a home page at
  50. <http://www.linux-sh.org/>.
  51. config SUPERH32
  52. def_bool ARCH = "sh"
  53. select HAVE_KPROBES
  54. select HAVE_KRETPROBES
  55. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  56. select HAVE_FUNCTION_TRACER
  57. select HAVE_FTRACE_MCOUNT_RECORD
  58. select HAVE_DYNAMIC_FTRACE
  59. select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  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. source "init/Kconfig"
  136. source "kernel/Kconfig.freezer"
  137. menu "System type"
  138. #
  139. # Processor families
  140. #
  141. config CPU_SH2
  142. bool
  143. config CPU_SH2A
  144. bool
  145. select CPU_SH2
  146. select UNCACHED_MAPPING
  147. config CPU_SH3
  148. bool
  149. select CPU_HAS_INTEVT
  150. select CPU_HAS_SR_RB
  151. select SYS_SUPPORTS_SH_TMU
  152. config CPU_SH4
  153. bool
  154. select CPU_HAS_INTEVT
  155. select CPU_HAS_SR_RB
  156. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  157. select SYS_SUPPORTS_SH_TMU
  158. select SYS_SUPPORTS_HUGETLBFS if MMU
  159. config CPU_SH4A
  160. bool
  161. select CPU_SH4
  162. config CPU_SH4AL_DSP
  163. bool
  164. select CPU_SH4A
  165. select CPU_HAS_DSP
  166. config CPU_SH5
  167. bool
  168. select CPU_HAS_FPU
  169. select SYS_SUPPORTS_SH_TMU
  170. select SYS_SUPPORTS_HUGETLBFS if MMU
  171. config CPU_SHX2
  172. bool
  173. config CPU_SHX3
  174. bool
  175. select DMA_COHERENT
  176. select SYS_SUPPORTS_SMP
  177. select SYS_SUPPORTS_NUMA
  178. config ARCH_SHMOBILE
  179. bool
  180. select ARCH_SUSPEND_POSSIBLE
  181. select PM
  182. select PM_RUNTIME
  183. config CPU_HAS_PMU
  184. depends on CPU_SH4 || CPU_SH4A
  185. default y
  186. bool
  187. if SUPERH32
  188. choice
  189. prompt "Processor sub-type selection"
  190. #
  191. # Processor subtypes
  192. #
  193. # SH-2 Processor Support
  194. config CPU_SUBTYPE_SH7619
  195. bool "Support SH7619 processor"
  196. select CPU_SH2
  197. select SYS_SUPPORTS_SH_CMT
  198. # SH-2A Processor Support
  199. config CPU_SUBTYPE_SH7201
  200. bool "Support SH7201 processor"
  201. select CPU_SH2A
  202. select CPU_HAS_FPU
  203. select SYS_SUPPORTS_SH_MTU2
  204. config CPU_SUBTYPE_SH7203
  205. bool "Support SH7203 processor"
  206. select CPU_SH2A
  207. select CPU_HAS_FPU
  208. select SYS_SUPPORTS_SH_CMT
  209. select SYS_SUPPORTS_SH_MTU2
  210. select ARCH_WANT_OPTIONAL_GPIOLIB
  211. select PINCTRL
  212. config CPU_SUBTYPE_SH7206
  213. bool "Support SH7206 processor"
  214. select CPU_SH2A
  215. select SYS_SUPPORTS_SH_CMT
  216. select SYS_SUPPORTS_SH_MTU2
  217. config CPU_SUBTYPE_SH7263
  218. bool "Support SH7263 processor"
  219. select CPU_SH2A
  220. select CPU_HAS_FPU
  221. select SYS_SUPPORTS_SH_CMT
  222. select SYS_SUPPORTS_SH_MTU2
  223. config CPU_SUBTYPE_SH7264
  224. bool "Support SH7264 processor"
  225. select CPU_SH2A
  226. select CPU_HAS_FPU
  227. select SYS_SUPPORTS_SH_CMT
  228. select SYS_SUPPORTS_SH_MTU2
  229. select PINCTRL
  230. config CPU_SUBTYPE_SH7269
  231. bool "Support SH7269 processor"
  232. select CPU_SH2A
  233. select CPU_HAS_FPU
  234. select SYS_SUPPORTS_SH_CMT
  235. select SYS_SUPPORTS_SH_MTU2
  236. select PINCTRL
  237. config CPU_SUBTYPE_MXG
  238. bool "Support MX-G processor"
  239. select CPU_SH2A
  240. select SYS_SUPPORTS_SH_MTU2
  241. help
  242. Select MX-G if running on an R8A03022BG part.
  243. # SH-3 Processor Support
  244. config CPU_SUBTYPE_SH7705
  245. bool "Support SH7705 processor"
  246. select CPU_SH3
  247. config CPU_SUBTYPE_SH7706
  248. bool "Support SH7706 processor"
  249. select CPU_SH3
  250. help
  251. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  252. config CPU_SUBTYPE_SH7707
  253. bool "Support SH7707 processor"
  254. select CPU_SH3
  255. help
  256. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  257. config CPU_SUBTYPE_SH7708
  258. bool "Support SH7708 processor"
  259. select CPU_SH3
  260. help
  261. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  262. if you have a 100 Mhz SH-3 HD6417708R CPU.
  263. config CPU_SUBTYPE_SH7709
  264. bool "Support SH7709 processor"
  265. select CPU_SH3
  266. help
  267. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  268. config CPU_SUBTYPE_SH7710
  269. bool "Support SH7710 processor"
  270. select CPU_SH3
  271. select CPU_HAS_DSP
  272. help
  273. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  274. config CPU_SUBTYPE_SH7712
  275. bool "Support SH7712 processor"
  276. select CPU_SH3
  277. select CPU_HAS_DSP
  278. help
  279. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  280. config CPU_SUBTYPE_SH7720
  281. bool "Support SH7720 processor"
  282. select CPU_SH3
  283. select CPU_HAS_DSP
  284. select SYS_SUPPORTS_SH_CMT
  285. select ARCH_WANT_OPTIONAL_GPIOLIB
  286. select USB_OHCI_SH if USB_OHCI_HCD
  287. select PINCTRL
  288. help
  289. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  290. config CPU_SUBTYPE_SH7721
  291. bool "Support SH7721 processor"
  292. select CPU_SH3
  293. select CPU_HAS_DSP
  294. select SYS_SUPPORTS_SH_CMT
  295. select USB_OHCI_SH if USB_OHCI_HCD
  296. help
  297. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  298. # SH-4 Processor Support
  299. config CPU_SUBTYPE_SH7750
  300. bool "Support SH7750 processor"
  301. select CPU_SH4
  302. help
  303. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  304. config CPU_SUBTYPE_SH7091
  305. bool "Support SH7091 processor"
  306. select CPU_SH4
  307. help
  308. Select SH7091 if you have an SH-4 based Sega device (such as
  309. the Dreamcast, Naomi, and Naomi 2).
  310. config CPU_SUBTYPE_SH7750R
  311. bool "Support SH7750R processor"
  312. select CPU_SH4
  313. config CPU_SUBTYPE_SH7750S
  314. bool "Support SH7750S processor"
  315. select CPU_SH4
  316. config CPU_SUBTYPE_SH7751
  317. bool "Support SH7751 processor"
  318. select CPU_SH4
  319. help
  320. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  321. or if you have a HD6417751R CPU.
  322. config CPU_SUBTYPE_SH7751R
  323. bool "Support SH7751R processor"
  324. select CPU_SH4
  325. config CPU_SUBTYPE_SH7760
  326. bool "Support SH7760 processor"
  327. select CPU_SH4
  328. config CPU_SUBTYPE_SH4_202
  329. bool "Support SH4-202 processor"
  330. select CPU_SH4
  331. # SH-4A Processor Support
  332. config CPU_SUBTYPE_SH7723
  333. bool "Support SH7723 processor"
  334. select CPU_SH4A
  335. select CPU_SHX2
  336. select ARCH_SHMOBILE
  337. select ARCH_SPARSEMEM_ENABLE
  338. select SYS_SUPPORTS_SH_CMT
  339. select ARCH_WANT_OPTIONAL_GPIOLIB
  340. select PINCTRL
  341. help
  342. Select SH7723 if you have an SH-MobileR2 CPU.
  343. config CPU_SUBTYPE_SH7724
  344. bool "Support SH7724 processor"
  345. select CPU_SH4A
  346. select CPU_SHX2
  347. select ARCH_SHMOBILE
  348. select ARCH_SPARSEMEM_ENABLE
  349. select SYS_SUPPORTS_SH_CMT
  350. select ARCH_WANT_OPTIONAL_GPIOLIB
  351. select PINCTRL
  352. help
  353. Select SH7724 if you have an SH-MobileR2R CPU.
  354. config CPU_SUBTYPE_SH7734
  355. bool "Support SH7734 processor"
  356. select CPU_SH4A
  357. select CPU_SHX2
  358. select ARCH_WANT_OPTIONAL_GPIOLIB
  359. select PINCTRL
  360. help
  361. Select SH7734 if you have a SH4A SH7734 CPU.
  362. config CPU_SUBTYPE_SH7757
  363. bool "Support SH7757 processor"
  364. select CPU_SH4A
  365. select CPU_SHX2
  366. select ARCH_WANT_OPTIONAL_GPIOLIB
  367. select PINCTRL
  368. help
  369. Select SH7757 if you have a SH4A SH7757 CPU.
  370. config CPU_SUBTYPE_SH7763
  371. bool "Support SH7763 processor"
  372. select CPU_SH4A
  373. select USB_OHCI_SH if USB_OHCI_HCD
  374. help
  375. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  376. config CPU_SUBTYPE_SH7770
  377. bool "Support SH7770 processor"
  378. select CPU_SH4A
  379. config CPU_SUBTYPE_SH7780
  380. bool "Support SH7780 processor"
  381. select CPU_SH4A
  382. config CPU_SUBTYPE_SH7785
  383. bool "Support SH7785 processor"
  384. select CPU_SH4A
  385. select CPU_SHX2
  386. select ARCH_SPARSEMEM_ENABLE
  387. select SYS_SUPPORTS_NUMA
  388. select ARCH_WANT_OPTIONAL_GPIOLIB
  389. select PINCTRL
  390. config CPU_SUBTYPE_SH7786
  391. bool "Support SH7786 processor"
  392. select CPU_SH4A
  393. select CPU_SHX3
  394. select CPU_HAS_PTEAEX
  395. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  396. select ARCH_WANT_OPTIONAL_GPIOLIB
  397. select USB_OHCI_SH if USB_OHCI_HCD
  398. select USB_EHCI_SH if USB_EHCI_HCD
  399. select PINCTRL
  400. config CPU_SUBTYPE_SHX3
  401. bool "Support SH-X3 processor"
  402. select CPU_SH4A
  403. select CPU_SHX3
  404. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  405. select ARCH_REQUIRE_GPIOLIB
  406. select PINCTRL
  407. # SH4AL-DSP Processor Support
  408. config CPU_SUBTYPE_SH7343
  409. bool "Support SH7343 processor"
  410. select CPU_SH4AL_DSP
  411. select ARCH_SHMOBILE
  412. select SYS_SUPPORTS_SH_CMT
  413. config CPU_SUBTYPE_SH7722
  414. bool "Support SH7722 processor"
  415. select CPU_SH4AL_DSP
  416. select CPU_SHX2
  417. select ARCH_SHMOBILE
  418. select ARCH_SPARSEMEM_ENABLE
  419. select SYS_SUPPORTS_NUMA
  420. select SYS_SUPPORTS_SH_CMT
  421. select ARCH_WANT_OPTIONAL_GPIOLIB
  422. select PINCTRL
  423. config CPU_SUBTYPE_SH7366
  424. bool "Support SH7366 processor"
  425. select CPU_SH4AL_DSP
  426. select CPU_SHX2
  427. select ARCH_SHMOBILE
  428. select ARCH_SPARSEMEM_ENABLE
  429. select SYS_SUPPORTS_NUMA
  430. select SYS_SUPPORTS_SH_CMT
  431. endchoice
  432. endif
  433. if SUPERH64
  434. choice
  435. prompt "Processor sub-type selection"
  436. # SH-5 Processor Support
  437. config CPU_SUBTYPE_SH5_101
  438. bool "Support SH5-101 processor"
  439. select CPU_SH5
  440. config CPU_SUBTYPE_SH5_103
  441. bool "Support SH5-103 processor"
  442. select CPU_SH5
  443. endchoice
  444. endif
  445. source "arch/sh/mm/Kconfig"
  446. source "arch/sh/Kconfig.cpu"
  447. source "arch/sh/boards/Kconfig"
  448. menu "Timer and clock configuration"
  449. config SH_PCLK_FREQ
  450. int "Peripheral clock frequency (in Hz)"
  451. depends on SH_CLK_CPG_LEGACY
  452. default "31250000" if CPU_SUBTYPE_SH7619
  453. default "33333333" if CPU_SUBTYPE_SH7770 || \
  454. CPU_SUBTYPE_SH7760 || \
  455. CPU_SUBTYPE_SH7705 || \
  456. CPU_SUBTYPE_SH7203 || \
  457. CPU_SUBTYPE_SH7206 || \
  458. CPU_SUBTYPE_SH7263 || \
  459. CPU_SUBTYPE_MXG
  460. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  461. default "66000000" if CPU_SUBTYPE_SH4_202
  462. default "50000000"
  463. help
  464. This option is used to specify the peripheral clock frequency.
  465. This is necessary for determining the reference clock value on
  466. platforms lacking an RTC.
  467. config SH_CLK_CPG
  468. def_bool y
  469. config SH_CLK_CPG_LEGACY
  470. depends on SH_CLK_CPG
  471. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  472. !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
  473. !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
  474. !CPU_SUBTYPE_SH7269
  475. endmenu
  476. menu "CPU Frequency scaling"
  477. source "drivers/cpufreq/Kconfig"
  478. endmenu
  479. source "arch/sh/drivers/Kconfig"
  480. endmenu
  481. menu "Kernel features"
  482. source kernel/Kconfig.hz
  483. config KEXEC
  484. bool "kexec system call (EXPERIMENTAL)"
  485. depends on SUPERH32 && MMU
  486. help
  487. kexec is a system call that implements the ability to shutdown your
  488. current kernel, and to start another kernel. It is like a reboot
  489. but it is independent of the system firmware. And like a reboot
  490. you can start any kernel with it, not just Linux.
  491. The name comes from the similarity to the exec system call.
  492. It is an ongoing process to be certain the hardware in a machine
  493. is properly shutdown, so do not be surprised if this code does not
  494. initially work for you. As of this writing the exact hardware
  495. interface is strongly in flux, so no good recommendation can be
  496. made.
  497. config CRASH_DUMP
  498. bool "kernel crash dumps (EXPERIMENTAL)"
  499. depends on SUPERH32 && BROKEN_ON_SMP
  500. help
  501. Generate crash dump after being started by kexec.
  502. This should be normally only set in special crash dump kernels
  503. which are loaded in the main kernel with kexec-tools into
  504. a specially reserved region and then later executed after
  505. a crash by kdump/kexec. The crash dump kernel must be compiled
  506. to a memory address not used by the main kernel using
  507. PHYSICAL_START.
  508. For more details see Documentation/kdump/kdump.txt
  509. config KEXEC_JUMP
  510. bool "kexec jump (EXPERIMENTAL)"
  511. depends on SUPERH32 && KEXEC && HIBERNATION
  512. help
  513. Jump between original kernel and kexeced kernel and invoke
  514. code via KEXEC
  515. config PHYSICAL_START
  516. hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
  517. default MEMORY_START
  518. ---help---
  519. This gives the physical address where the kernel is loaded
  520. and is ordinarily the same as MEMORY_START.
  521. Different values are primarily used in the case of kexec on panic
  522. where the fail safe kernel needs to run at a different address
  523. than the panic-ed kernel.
  524. config SECCOMP
  525. bool "Enable seccomp to safely compute untrusted bytecode"
  526. depends on PROC_FS
  527. help
  528. This kernel feature is useful for number crunching applications
  529. that may need to compute untrusted bytecode during their
  530. execution. By using pipes or other transports made available to
  531. the process as file descriptors supporting the read/write
  532. syscalls, it's possible to isolate those applications in
  533. their own address space using seccomp. Once seccomp is
  534. enabled via prctl, it cannot be disabled and the task is only
  535. allowed to execute a few safe syscalls defined by each seccomp
  536. mode.
  537. If unsure, say N.
  538. config SMP
  539. bool "Symmetric multi-processing support"
  540. depends on SYS_SUPPORTS_SMP
  541. ---help---
  542. This enables support for systems with more than one CPU. If you have
  543. a system with only one CPU, say N. If you have a system with more
  544. than one CPU, say Y.
  545. If you say N here, the kernel will run on uni- 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. uniprocessor machines. On a uniprocessor 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
  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
  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. select GENERIC_PCI_IOMAP
  685. select NO_GENERIC_PCI_IOPORT_MAP
  686. help
  687. Find out whether you have a PCI motherboard. PCI is the name of a
  688. bus system, i.e. the way the CPU talks to the other stuff inside
  689. your box. If you have PCI, say Y, otherwise N.
  690. config PCI_DOMAINS
  691. bool
  692. source "drivers/pci/pcie/Kconfig"
  693. source "drivers/pci/Kconfig"
  694. source "drivers/pcmcia/Kconfig"
  695. source "drivers/pci/hotplug/Kconfig"
  696. endmenu
  697. menu "Executable file formats"
  698. source "fs/Kconfig.binfmt"
  699. endmenu
  700. menu "Power management options (EXPERIMENTAL)"
  701. source "kernel/power/Kconfig"
  702. source "drivers/cpuidle/Kconfig"
  703. endmenu
  704. source "net/Kconfig"
  705. source "drivers/Kconfig"
  706. source "fs/Kconfig"
  707. source "arch/sh/Kconfig.debug"
  708. source "security/Kconfig"
  709. source "crypto/Kconfig"
  710. source "lib/Kconfig"