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