Kconfig 22 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 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 HAVE_GENERIC_HARDIRQS
  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_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 GENERIC_SIGALTSTACK
  44. help
  45. The SuperH is a RISC processor targeted for use in embedded systems
  46. and consumer electronics; it was also used in the Sega Dreamcast
  47. gaming console. The SuperH port has a home page at
  48. <http://www.linux-sh.org/>.
  49. config SUPERH32
  50. def_bool ARCH = "sh"
  51. select HAVE_KPROBES
  52. select HAVE_KRETPROBES
  53. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  54. select HAVE_FUNCTION_TRACER
  55. select HAVE_FTRACE_MCOUNT_RECORD
  56. select HAVE_DYNAMIC_FTRACE
  57. select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  58. select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  59. select ARCH_WANT_IPC_PARSE_VERSION
  60. select HAVE_FUNCTION_GRAPH_TRACER
  61. select HAVE_ARCH_KGDB
  62. select HAVE_HW_BREAKPOINT
  63. select HAVE_MIXED_BREAKPOINTS_REGS
  64. select PERF_EVENTS
  65. select ARCH_HIBERNATION_POSSIBLE if MMU
  66. select SPARSE_IRQ
  67. config SUPERH64
  68. def_bool ARCH = "sh64"
  69. select KALLSYMS
  70. config ARCH_DEFCONFIG
  71. string
  72. default "arch/sh/configs/shx3_defconfig" if SUPERH32
  73. default "arch/sh/configs/cayman_defconfig" if SUPERH64
  74. config RWSEM_GENERIC_SPINLOCK
  75. def_bool y
  76. config RWSEM_XCHGADD_ALGORITHM
  77. bool
  78. config GENERIC_BUG
  79. def_bool y
  80. depends on BUG && SUPERH32
  81. config GENERIC_CSUM
  82. def_bool y
  83. depends on SUPERH64
  84. config GENERIC_HWEIGHT
  85. def_bool y
  86. config IRQ_PER_CPU
  87. def_bool y
  88. config GENERIC_GPIO
  89. def_bool n
  90. config GENERIC_CALIBRATE_DELAY
  91. bool
  92. config GENERIC_LOCKBREAK
  93. def_bool y
  94. depends on SMP && PREEMPT
  95. config ARCH_SUSPEND_POSSIBLE
  96. def_bool n
  97. config ARCH_HIBERNATION_POSSIBLE
  98. def_bool n
  99. config SYS_SUPPORTS_APM_EMULATION
  100. bool
  101. select ARCH_SUSPEND_POSSIBLE
  102. config SYS_SUPPORTS_HUGETLBFS
  103. bool
  104. config SYS_SUPPORTS_SMP
  105. bool
  106. config SYS_SUPPORTS_NUMA
  107. bool
  108. config SYS_SUPPORTS_PCI
  109. bool
  110. config SYS_SUPPORTS_CMT
  111. bool
  112. config SYS_SUPPORTS_MTU2
  113. bool
  114. config SYS_SUPPORTS_TMU
  115. bool
  116. config STACKTRACE_SUPPORT
  117. def_bool y
  118. config LOCKDEP_SUPPORT
  119. def_bool y
  120. config HAVE_LATENCYTOP_SUPPORT
  121. def_bool y
  122. config ARCH_HAS_ILOG2_U32
  123. def_bool n
  124. config ARCH_HAS_ILOG2_U64
  125. def_bool n
  126. config ARCH_NO_VIRT_TO_BUS
  127. def_bool y
  128. config ARCH_HAS_DEFAULT_IDLE
  129. def_bool y
  130. config NO_IOPORT
  131. def_bool !PCI
  132. depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
  133. !SH_HP6XX && !SH_SOLUTION_ENGINE
  134. config IO_TRAPPED
  135. bool
  136. config SWAP_IO_SPACE
  137. bool
  138. config DMA_COHERENT
  139. bool
  140. config DMA_NONCOHERENT
  141. def_bool !DMA_COHERENT
  142. config NEED_DMA_MAP_STATE
  143. def_bool DMA_NONCOHERENT
  144. config NEED_SG_DMA_LENGTH
  145. def_bool y
  146. source "init/Kconfig"
  147. source "kernel/Kconfig.freezer"
  148. menu "System type"
  149. #
  150. # Processor families
  151. #
  152. config CPU_SH2
  153. bool
  154. config CPU_SH2A
  155. bool
  156. select CPU_SH2
  157. select UNCACHED_MAPPING
  158. config CPU_SH3
  159. bool
  160. select CPU_HAS_INTEVT
  161. select CPU_HAS_SR_RB
  162. select SYS_SUPPORTS_TMU
  163. config CPU_SH4
  164. bool
  165. select CPU_HAS_INTEVT
  166. select CPU_HAS_SR_RB
  167. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  168. select SYS_SUPPORTS_TMU
  169. select SYS_SUPPORTS_HUGETLBFS if MMU
  170. config CPU_SH4A
  171. bool
  172. select CPU_SH4
  173. config CPU_SH4AL_DSP
  174. bool
  175. select CPU_SH4A
  176. select CPU_HAS_DSP
  177. config CPU_SH5
  178. bool
  179. select CPU_HAS_FPU
  180. select SYS_SUPPORTS_TMU
  181. select SYS_SUPPORTS_HUGETLBFS if MMU
  182. config CPU_SHX2
  183. bool
  184. config CPU_SHX3
  185. bool
  186. select DMA_COHERENT
  187. select SYS_SUPPORTS_SMP
  188. select SYS_SUPPORTS_NUMA
  189. config ARCH_SHMOBILE
  190. bool
  191. select ARCH_SUSPEND_POSSIBLE
  192. select PM
  193. select PM_RUNTIME
  194. config CPU_HAS_PMU
  195. depends on CPU_SH4 || CPU_SH4A
  196. default y
  197. bool
  198. if SUPERH32
  199. choice
  200. prompt "Processor sub-type selection"
  201. #
  202. # Processor subtypes
  203. #
  204. # SH-2 Processor Support
  205. config CPU_SUBTYPE_SH7619
  206. bool "Support SH7619 processor"
  207. select CPU_SH2
  208. select SYS_SUPPORTS_CMT
  209. # SH-2A Processor Support
  210. config CPU_SUBTYPE_SH7201
  211. bool "Support SH7201 processor"
  212. select CPU_SH2A
  213. select CPU_HAS_FPU
  214. select SYS_SUPPORTS_MTU2
  215. config CPU_SUBTYPE_SH7203
  216. bool "Support SH7203 processor"
  217. select CPU_SH2A
  218. select CPU_HAS_FPU
  219. select SYS_SUPPORTS_CMT
  220. select SYS_SUPPORTS_MTU2
  221. select ARCH_WANT_OPTIONAL_GPIOLIB
  222. config CPU_SUBTYPE_SH7206
  223. bool "Support SH7206 processor"
  224. select CPU_SH2A
  225. select SYS_SUPPORTS_CMT
  226. select SYS_SUPPORTS_MTU2
  227. config CPU_SUBTYPE_SH7263
  228. bool "Support SH7263 processor"
  229. select CPU_SH2A
  230. select CPU_HAS_FPU
  231. select SYS_SUPPORTS_CMT
  232. select SYS_SUPPORTS_MTU2
  233. config CPU_SUBTYPE_SH7264
  234. bool "Support SH7264 processor"
  235. select CPU_SH2A
  236. select CPU_HAS_FPU
  237. select SYS_SUPPORTS_CMT
  238. select SYS_SUPPORTS_MTU2
  239. config CPU_SUBTYPE_SH7269
  240. bool "Support SH7269 processor"
  241. select CPU_SH2A
  242. select CPU_HAS_FPU
  243. select SYS_SUPPORTS_CMT
  244. select SYS_SUPPORTS_MTU2
  245. config CPU_SUBTYPE_MXG
  246. bool "Support MX-G processor"
  247. select CPU_SH2A
  248. select SYS_SUPPORTS_MTU2
  249. help
  250. Select MX-G if running on an R8A03022BG part.
  251. # SH-3 Processor Support
  252. config CPU_SUBTYPE_SH7705
  253. bool "Support SH7705 processor"
  254. select CPU_SH3
  255. config CPU_SUBTYPE_SH7706
  256. bool "Support SH7706 processor"
  257. select CPU_SH3
  258. help
  259. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  260. config CPU_SUBTYPE_SH7707
  261. bool "Support SH7707 processor"
  262. select CPU_SH3
  263. help
  264. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  265. config CPU_SUBTYPE_SH7708
  266. bool "Support SH7708 processor"
  267. select CPU_SH3
  268. help
  269. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  270. if you have a 100 Mhz SH-3 HD6417708R CPU.
  271. config CPU_SUBTYPE_SH7709
  272. bool "Support SH7709 processor"
  273. select CPU_SH3
  274. help
  275. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  276. config CPU_SUBTYPE_SH7710
  277. bool "Support SH7710 processor"
  278. select CPU_SH3
  279. select CPU_HAS_DSP
  280. help
  281. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  282. config CPU_SUBTYPE_SH7712
  283. bool "Support SH7712 processor"
  284. select CPU_SH3
  285. select CPU_HAS_DSP
  286. help
  287. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  288. config CPU_SUBTYPE_SH7720
  289. bool "Support SH7720 processor"
  290. select CPU_SH3
  291. select CPU_HAS_DSP
  292. select SYS_SUPPORTS_CMT
  293. select ARCH_WANT_OPTIONAL_GPIOLIB
  294. select USB_ARCH_HAS_OHCI
  295. select USB_OHCI_SH if USB_OHCI_HCD
  296. help
  297. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  298. config CPU_SUBTYPE_SH7721
  299. bool "Support SH7721 processor"
  300. select CPU_SH3
  301. select CPU_HAS_DSP
  302. select SYS_SUPPORTS_CMT
  303. select USB_ARCH_HAS_OHCI
  304. select USB_OHCI_SH if USB_OHCI_HCD
  305. help
  306. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  307. # SH-4 Processor Support
  308. config CPU_SUBTYPE_SH7750
  309. bool "Support SH7750 processor"
  310. select CPU_SH4
  311. help
  312. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  313. config CPU_SUBTYPE_SH7091
  314. bool "Support SH7091 processor"
  315. select CPU_SH4
  316. help
  317. Select SH7091 if you have an SH-4 based Sega device (such as
  318. the Dreamcast, Naomi, and Naomi 2).
  319. config CPU_SUBTYPE_SH7750R
  320. bool "Support SH7750R processor"
  321. select CPU_SH4
  322. config CPU_SUBTYPE_SH7750S
  323. bool "Support SH7750S processor"
  324. select CPU_SH4
  325. config CPU_SUBTYPE_SH7751
  326. bool "Support SH7751 processor"
  327. select CPU_SH4
  328. help
  329. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  330. or if you have a HD6417751R CPU.
  331. config CPU_SUBTYPE_SH7751R
  332. bool "Support SH7751R processor"
  333. select CPU_SH4
  334. config CPU_SUBTYPE_SH7760
  335. bool "Support SH7760 processor"
  336. select CPU_SH4
  337. config CPU_SUBTYPE_SH4_202
  338. bool "Support SH4-202 processor"
  339. select CPU_SH4
  340. # SH-4A Processor Support
  341. config CPU_SUBTYPE_SH7723
  342. bool "Support SH7723 processor"
  343. select CPU_SH4A
  344. select CPU_SHX2
  345. select ARCH_SHMOBILE
  346. select ARCH_SPARSEMEM_ENABLE
  347. select SYS_SUPPORTS_CMT
  348. select ARCH_WANT_OPTIONAL_GPIOLIB
  349. help
  350. Select SH7723 if you have an SH-MobileR2 CPU.
  351. config CPU_SUBTYPE_SH7724
  352. bool "Support SH7724 processor"
  353. select CPU_SH4A
  354. select CPU_SHX2
  355. select ARCH_SHMOBILE
  356. select ARCH_SPARSEMEM_ENABLE
  357. select SYS_SUPPORTS_CMT
  358. select ARCH_WANT_OPTIONAL_GPIOLIB
  359. help
  360. Select SH7724 if you have an SH-MobileR2R CPU.
  361. config CPU_SUBTYPE_SH7734
  362. bool "Support SH7734 processor"
  363. select CPU_SH4A
  364. select CPU_SHX2
  365. select ARCH_WANT_OPTIONAL_GPIOLIB
  366. select USB_ARCH_HAS_OHCI
  367. select USB_ARCH_HAS_EHCI
  368. help
  369. Select SH7734 if you have a SH4A SH7734 CPU.
  370. config CPU_SUBTYPE_SH7757
  371. bool "Support SH7757 processor"
  372. select CPU_SH4A
  373. select CPU_SHX2
  374. select ARCH_WANT_OPTIONAL_GPIOLIB
  375. select USB_ARCH_HAS_OHCI
  376. select USB_ARCH_HAS_EHCI
  377. help
  378. Select SH7757 if you have a SH4A SH7757 CPU.
  379. config CPU_SUBTYPE_SH7763
  380. bool "Support SH7763 processor"
  381. select CPU_SH4A
  382. select USB_ARCH_HAS_OHCI
  383. select USB_OHCI_SH if USB_OHCI_HCD
  384. help
  385. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  386. config CPU_SUBTYPE_SH7770
  387. bool "Support SH7770 processor"
  388. select CPU_SH4A
  389. config CPU_SUBTYPE_SH7780
  390. bool "Support SH7780 processor"
  391. select CPU_SH4A
  392. config CPU_SUBTYPE_SH7785
  393. bool "Support SH7785 processor"
  394. select CPU_SH4A
  395. select CPU_SHX2
  396. select ARCH_SPARSEMEM_ENABLE
  397. select SYS_SUPPORTS_NUMA
  398. select ARCH_WANT_OPTIONAL_GPIOLIB
  399. config CPU_SUBTYPE_SH7786
  400. bool "Support SH7786 processor"
  401. select CPU_SH4A
  402. select CPU_SHX3
  403. select CPU_HAS_PTEAEX
  404. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  405. select ARCH_WANT_OPTIONAL_GPIOLIB
  406. select USB_ARCH_HAS_OHCI
  407. select USB_OHCI_SH if USB_OHCI_HCD
  408. select USB_ARCH_HAS_EHCI
  409. select USB_EHCI_SH if USB_EHCI_HCD
  410. config CPU_SUBTYPE_SHX3
  411. bool "Support SH-X3 processor"
  412. select CPU_SH4A
  413. select CPU_SHX3
  414. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  415. select ARCH_REQUIRE_GPIOLIB
  416. # SH4AL-DSP Processor Support
  417. config CPU_SUBTYPE_SH7343
  418. bool "Support SH7343 processor"
  419. select CPU_SH4AL_DSP
  420. select ARCH_SHMOBILE
  421. select SYS_SUPPORTS_CMT
  422. config CPU_SUBTYPE_SH7722
  423. bool "Support SH7722 processor"
  424. select CPU_SH4AL_DSP
  425. select CPU_SHX2
  426. select ARCH_SHMOBILE
  427. select ARCH_SPARSEMEM_ENABLE
  428. select SYS_SUPPORTS_NUMA
  429. select SYS_SUPPORTS_CMT
  430. select ARCH_WANT_OPTIONAL_GPIOLIB
  431. config CPU_SUBTYPE_SH7366
  432. bool "Support SH7366 processor"
  433. select CPU_SH4AL_DSP
  434. select CPU_SHX2
  435. select ARCH_SHMOBILE
  436. select ARCH_SPARSEMEM_ENABLE
  437. select SYS_SUPPORTS_NUMA
  438. select SYS_SUPPORTS_CMT
  439. endchoice
  440. endif
  441. if SUPERH64
  442. choice
  443. prompt "Processor sub-type selection"
  444. # SH-5 Processor Support
  445. config CPU_SUBTYPE_SH5_101
  446. bool "Support SH5-101 processor"
  447. select CPU_SH5
  448. config CPU_SUBTYPE_SH5_103
  449. bool "Support SH5-103 processor"
  450. select CPU_SH5
  451. endchoice
  452. endif
  453. source "arch/sh/mm/Kconfig"
  454. source "arch/sh/Kconfig.cpu"
  455. source "arch/sh/boards/Kconfig"
  456. menu "Timer and clock configuration"
  457. config SH_TIMER_TMU
  458. bool "TMU timer driver"
  459. depends on SYS_SUPPORTS_TMU
  460. default y
  461. help
  462. This enables the build of the TMU timer driver.
  463. config SH_TIMER_CMT
  464. bool "CMT timer driver"
  465. depends on SYS_SUPPORTS_CMT
  466. default y
  467. help
  468. This enables build of the CMT timer driver.
  469. config SH_TIMER_MTU2
  470. bool "MTU2 timer driver"
  471. depends on SYS_SUPPORTS_MTU2
  472. default y
  473. help
  474. This enables build of the MTU2 timer driver.
  475. config SH_PCLK_FREQ
  476. int "Peripheral clock frequency (in Hz)"
  477. depends on SH_CLK_CPG_LEGACY
  478. default "31250000" if CPU_SUBTYPE_SH7619
  479. default "33333333" if CPU_SUBTYPE_SH7770 || \
  480. CPU_SUBTYPE_SH7760 || \
  481. CPU_SUBTYPE_SH7705 || \
  482. CPU_SUBTYPE_SH7203 || \
  483. CPU_SUBTYPE_SH7206 || \
  484. CPU_SUBTYPE_SH7263 || \
  485. CPU_SUBTYPE_MXG
  486. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  487. default "66000000" if CPU_SUBTYPE_SH4_202
  488. default "50000000"
  489. help
  490. This option is used to specify the peripheral clock frequency.
  491. This is necessary for determining the reference clock value on
  492. platforms lacking an RTC.
  493. config SH_CLK_CPG
  494. def_bool y
  495. config SH_CLK_CPG_LEGACY
  496. depends on SH_CLK_CPG
  497. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  498. !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
  499. !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
  500. !CPU_SUBTYPE_SH7269
  501. endmenu
  502. menu "CPU Frequency scaling"
  503. source "drivers/cpufreq/Kconfig"
  504. config SH_CPU_FREQ
  505. tristate "SuperH CPU Frequency driver"
  506. depends on CPU_FREQ
  507. select CPU_FREQ_TABLE
  508. help
  509. This adds the cpufreq driver for SuperH. Any CPU that supports
  510. clock rate rounding through the clock framework can use this
  511. driver. While it will make the kernel slightly larger, this is
  512. harmless for CPUs that don't support rate rounding. The driver
  513. will also generate a notice in the boot log before disabling
  514. itself if the CPU in question is not capable of rate rounding.
  515. For details, take a look at <file:Documentation/cpu-freq>.
  516. If unsure, say N.
  517. endmenu
  518. source "arch/sh/drivers/Kconfig"
  519. endmenu
  520. menu "Kernel features"
  521. source kernel/Kconfig.hz
  522. config KEXEC
  523. bool "kexec system call (EXPERIMENTAL)"
  524. depends on SUPERH32 && EXPERIMENTAL && MMU
  525. help
  526. kexec is a system call that implements the ability to shutdown your
  527. current kernel, and to start another kernel. It is like a reboot
  528. but it is independent of the system firmware. And like a reboot
  529. you can start any kernel with it, not just Linux.
  530. The name comes from the similarity to the exec system call.
  531. It is an ongoing process to be certain the hardware in a machine
  532. is properly shutdown, so do not be surprised if this code does not
  533. initially work for you. It may help to enable device hotplugging
  534. support. As of this writing the exact hardware interface is
  535. strongly in flux, so no good recommendation can be made.
  536. config CRASH_DUMP
  537. bool "kernel crash dumps (EXPERIMENTAL)"
  538. depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
  539. help
  540. Generate crash dump after being started by kexec.
  541. This should be normally only set in special crash dump kernels
  542. which are loaded in the main kernel with kexec-tools into
  543. a specially reserved region and then later executed after
  544. a crash by kdump/kexec. The crash dump kernel must be compiled
  545. to a memory address not used by the main kernel using
  546. PHYSICAL_START.
  547. For more details see Documentation/kdump/kdump.txt
  548. config KEXEC_JUMP
  549. bool "kexec jump (EXPERIMENTAL)"
  550. depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
  551. help
  552. Jump between original kernel and kexeced kernel and invoke
  553. code via KEXEC
  554. config PHYSICAL_START
  555. hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
  556. default MEMORY_START
  557. ---help---
  558. This gives the physical address where the kernel is loaded
  559. and is ordinarily the same as MEMORY_START.
  560. Different values are primarily used in the case of kexec on panic
  561. where the fail safe kernel needs to run at a different address
  562. than the panic-ed kernel.
  563. config SECCOMP
  564. bool "Enable seccomp to safely compute untrusted bytecode"
  565. depends on PROC_FS
  566. help
  567. This kernel feature is useful for number crunching applications
  568. that may need to compute untrusted bytecode during their
  569. execution. By using pipes or other transports made available to
  570. the process as file descriptors supporting the read/write
  571. syscalls, it's possible to isolate those applications in
  572. their own address space using seccomp. Once seccomp is
  573. enabled via prctl, it cannot be disabled and the task is only
  574. allowed to execute a few safe syscalls defined by each seccomp
  575. mode.
  576. If unsure, say N.
  577. config CC_STACKPROTECTOR
  578. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  579. depends on SUPERH32 && EXPERIMENTAL
  580. help
  581. This option turns on the -fstack-protector GCC feature. This
  582. feature puts, at the beginning of functions, a canary value on
  583. the stack just before the return address, and validates
  584. the value just before actually returning. Stack based buffer
  585. overflows (that need to overwrite this return address) now also
  586. overwrite the canary, which gets detected and the attack is then
  587. neutralized via a kernel panic.
  588. This feature requires gcc version 4.2 or above.
  589. config SMP
  590. bool "Symmetric multi-processing support"
  591. depends on SYS_SUPPORTS_SMP
  592. select USE_GENERIC_SMP_HELPERS
  593. ---help---
  594. This enables support for systems with more than one CPU. If you have
  595. a system with only one CPU, like most personal computers, say N. If
  596. you have a system with more than one CPU, say Y.
  597. If you say N here, the kernel will run on single and multiprocessor
  598. machines, but will use only one CPU of a multiprocessor machine. If
  599. you say Y here, the kernel will run on many, but not all,
  600. singleprocessor machines. On a singleprocessor machine, the kernel
  601. will run faster if you say N here.
  602. People using multiprocessor machines who say Y here should also say
  603. Y to "Enhanced Real Time Clock Support", below.
  604. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  605. available at <http://www.tldp.org/docs.html#howto>.
  606. If you don't know what to do here, say N.
  607. config NR_CPUS
  608. int "Maximum number of CPUs (2-32)"
  609. range 2 32
  610. depends on SMP
  611. default "4" if CPU_SUBTYPE_SHX3
  612. default "2"
  613. help
  614. This allows you to specify the maximum number of CPUs which this
  615. kernel will support. The maximum supported value is 32 and the
  616. minimum value which makes sense is 2.
  617. This is purely to save memory - each supported CPU adds
  618. approximately eight kilobytes to the kernel image.
  619. config HOTPLUG_CPU
  620. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  621. depends on SMP && HOTPLUG && EXPERIMENTAL
  622. help
  623. Say Y here to experiment with turning CPUs off and on. CPUs
  624. can be controlled through /sys/devices/system/cpu.
  625. source "kernel/Kconfig.preempt"
  626. config GUSA
  627. def_bool y
  628. depends on !SMP && SUPERH32
  629. help
  630. This enables support for gUSA (general UserSpace Atomicity).
  631. This is the default implementation for both UP and non-ll/sc
  632. CPUs, and is used by the libc, amongst others.
  633. For additional information, design information can be found
  634. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  635. This should only be disabled for special cases where alternate
  636. atomicity implementations exist.
  637. config GUSA_RB
  638. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  639. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  640. help
  641. Enabling this option will allow the kernel to implement some
  642. atomic operations using a software implementation of load-locked/
  643. store-conditional (LLSC). On machines which do not have hardware
  644. LLSC, this should be more efficient than the other alternative of
  645. disabling interrupts around the atomic sequence.
  646. config HW_PERF_EVENTS
  647. bool "Enable hardware performance counter support for perf events"
  648. depends on PERF_EVENTS && CPU_HAS_PMU
  649. default y
  650. help
  651. Enable hardware performance counter support for perf events. If
  652. disabled, perf events will use software events only.
  653. source "drivers/sh/Kconfig"
  654. endmenu
  655. menu "Boot options"
  656. config ZERO_PAGE_OFFSET
  657. hex
  658. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  659. SH_7751_SOLUTION_ENGINE
  660. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  661. default "0x00002000" if PAGE_SIZE_8KB
  662. default "0x00001000"
  663. help
  664. This sets the default offset of zero page.
  665. config BOOT_LINK_OFFSET
  666. hex
  667. default "0x00210000" if SH_SHMIN
  668. default "0x00400000" if SH_CAYMAN
  669. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  670. default "0x009e0000" if SH_TITAN
  671. default "0x01800000" if SH_SDK7780
  672. default "0x02000000" if SH_EDOSK7760
  673. default "0x00800000"
  674. help
  675. This option allows you to set the link address offset of the zImage.
  676. This can be useful if you are on a board which has a small amount of
  677. memory.
  678. config ENTRY_OFFSET
  679. hex
  680. default "0x00001000" if PAGE_SIZE_4KB
  681. default "0x00002000" if PAGE_SIZE_8KB
  682. default "0x00004000" if PAGE_SIZE_16KB
  683. default "0x00010000" if PAGE_SIZE_64KB
  684. default "0x00000000"
  685. config ROMIMAGE_MMCIF
  686. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  687. depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
  688. help
  689. Say Y here to include experimental MMCIF loading code in
  690. romImage. With this enabled it is possible to write the romImage
  691. kernel image to an MMC card and boot the kernel straight from
  692. the reset vector. At reset the processor Mask ROM will load the
  693. first part of the romImage which in turn loads the rest the kernel
  694. image to RAM using the MMCIF hardware block.
  695. choice
  696. prompt "Kernel command line"
  697. optional
  698. default CMDLINE_OVERWRITE
  699. help
  700. Setting this option allows the kernel command line arguments
  701. to be set.
  702. config CMDLINE_OVERWRITE
  703. bool "Overwrite bootloader kernel arguments"
  704. help
  705. Given string will overwrite any arguments passed in by
  706. a bootloader.
  707. config CMDLINE_EXTEND
  708. bool "Extend bootloader kernel arguments"
  709. help
  710. Given string will be concatenated with arguments passed in
  711. by a bootloader.
  712. endchoice
  713. config CMDLINE
  714. string "Kernel command line arguments string"
  715. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  716. default "console=ttySC1,115200"
  717. endmenu
  718. menu "Bus options"
  719. config SUPERHYWAY
  720. tristate "SuperHyway Bus support"
  721. depends on CPU_SUBTYPE_SH4_202
  722. config MAPLE
  723. bool "Maple Bus support"
  724. depends on SH_DREAMCAST
  725. help
  726. The Maple Bus is SEGA's serial communication bus for peripherals
  727. on the Dreamcast. Without this bus support you won't be able to
  728. get your Dreamcast keyboard etc to work, so most users
  729. probably want to say 'Y' here, unless you are only using the
  730. Dreamcast with a serial line terminal or a remote network
  731. connection.
  732. config PCI
  733. bool "PCI support"
  734. depends on SYS_SUPPORTS_PCI
  735. select PCI_DOMAINS
  736. select GENERIC_PCI_IOMAP
  737. select NO_GENERIC_PCI_IOPORT_MAP
  738. help
  739. Find out whether you have a PCI motherboard. PCI is the name of a
  740. bus system, i.e. the way the CPU talks to the other stuff inside
  741. your box. If you have PCI, say Y, otherwise N.
  742. config PCI_DOMAINS
  743. bool
  744. source "drivers/pci/pcie/Kconfig"
  745. source "drivers/pci/Kconfig"
  746. source "drivers/pcmcia/Kconfig"
  747. source "drivers/pci/hotplug/Kconfig"
  748. endmenu
  749. menu "Executable file formats"
  750. source "fs/Kconfig.binfmt"
  751. endmenu
  752. menu "Power management options (EXPERIMENTAL)"
  753. depends on EXPERIMENTAL
  754. source "kernel/power/Kconfig"
  755. source "drivers/cpuidle/Kconfig"
  756. endmenu
  757. source "net/Kconfig"
  758. source "drivers/Kconfig"
  759. source "fs/Kconfig"
  760. source "arch/sh/Kconfig.debug"
  761. source "security/Kconfig"
  762. source "crypto/Kconfig"
  763. source "lib/Kconfig"