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_PERF_EVENTS
  15. select HAVE_DEBUG_BUGVERBOSE
  16. select ARCH_HAVE_CUSTOM_GPIO_H
  17. select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
  18. select PERF_USE_VMALLOC
  19. select HAVE_DEBUG_KMEMLEAK
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_BZIP2
  22. select HAVE_KERNEL_LZMA
  23. select HAVE_KERNEL_XZ
  24. select HAVE_KERNEL_LZO
  25. select HAVE_UID16
  26. select ARCH_WANT_IPC_PARSE_VERSION
  27. select HAVE_SYSCALL_TRACEPOINTS
  28. select HAVE_REGS_AND_STACK_ACCESS_API
  29. select HAVE_GENERIC_HARDIRQS
  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_CLOCKEVENTS
  37. select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  38. select GENERIC_STRNCPY_FROM_USER
  39. select GENERIC_STRNLEN_USER
  40. select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
  41. select MODULES_USE_ELF_RELA
  42. help
  43. The SuperH is a RISC processor targeted for use in embedded systems
  44. and consumer electronics; it was also used in the Sega Dreamcast
  45. gaming console. The SuperH port has a home page at
  46. <http://www.linux-sh.org/>.
  47. config SUPERH32
  48. def_bool ARCH = "sh"
  49. select HAVE_KPROBES
  50. select HAVE_KRETPROBES
  51. select HAVE_IOREMAP_PROT if MMU && !X2TLB
  52. select HAVE_FUNCTION_TRACER
  53. select HAVE_FTRACE_MCOUNT_RECORD
  54. select HAVE_DYNAMIC_FTRACE
  55. select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  56. select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  57. select ARCH_WANT_IPC_PARSE_VERSION
  58. select HAVE_FUNCTION_GRAPH_TRACER
  59. select HAVE_ARCH_KGDB
  60. select HAVE_HW_BREAKPOINT
  61. select HAVE_MIXED_BREAKPOINTS_REGS
  62. select PERF_EVENTS
  63. select ARCH_HIBERNATION_POSSIBLE if MMU
  64. select SPARSE_IRQ
  65. config SUPERH64
  66. def_bool ARCH = "sh64"
  67. select KALLSYMS
  68. config ARCH_DEFCONFIG
  69. string
  70. default "arch/sh/configs/shx3_defconfig" if SUPERH32
  71. default "arch/sh/configs/cayman_defconfig" if SUPERH64
  72. config RWSEM_GENERIC_SPINLOCK
  73. def_bool y
  74. config RWSEM_XCHGADD_ALGORITHM
  75. bool
  76. config GENERIC_BUG
  77. def_bool y
  78. depends on BUG && SUPERH32
  79. config GENERIC_CSUM
  80. def_bool y
  81. depends on SUPERH64
  82. config GENERIC_HWEIGHT
  83. def_bool y
  84. config IRQ_PER_CPU
  85. def_bool y
  86. config GENERIC_GPIO
  87. def_bool n
  88. config GENERIC_CALIBRATE_DELAY
  89. bool
  90. config GENERIC_LOCKBREAK
  91. def_bool y
  92. depends on SMP && PREEMPT
  93. config ARCH_SUSPEND_POSSIBLE
  94. def_bool n
  95. config ARCH_HIBERNATION_POSSIBLE
  96. def_bool n
  97. config SYS_SUPPORTS_APM_EMULATION
  98. bool
  99. select ARCH_SUSPEND_POSSIBLE
  100. config SYS_SUPPORTS_HUGETLBFS
  101. bool
  102. config SYS_SUPPORTS_SMP
  103. bool
  104. config SYS_SUPPORTS_NUMA
  105. bool
  106. config SYS_SUPPORTS_PCI
  107. bool
  108. config SYS_SUPPORTS_CMT
  109. bool
  110. config SYS_SUPPORTS_MTU2
  111. bool
  112. config SYS_SUPPORTS_TMU
  113. bool
  114. config STACKTRACE_SUPPORT
  115. def_bool y
  116. config LOCKDEP_SUPPORT
  117. def_bool y
  118. config HAVE_LATENCYTOP_SUPPORT
  119. def_bool y
  120. config ARCH_HAS_ILOG2_U32
  121. def_bool n
  122. config ARCH_HAS_ILOG2_U64
  123. def_bool n
  124. config ARCH_NO_VIRT_TO_BUS
  125. def_bool y
  126. config ARCH_HAS_DEFAULT_IDLE
  127. def_bool y
  128. config NO_IOPORT
  129. def_bool !PCI
  130. depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
  131. !SH_HP6XX && !SH_SOLUTION_ENGINE
  132. config IO_TRAPPED
  133. bool
  134. config SWAP_IO_SPACE
  135. bool
  136. config DMA_COHERENT
  137. bool
  138. config DMA_NONCOHERENT
  139. def_bool !DMA_COHERENT
  140. config NEED_DMA_MAP_STATE
  141. def_bool DMA_NONCOHERENT
  142. config NEED_SG_DMA_LENGTH
  143. def_bool y
  144. source "init/Kconfig"
  145. source "kernel/Kconfig.freezer"
  146. menu "System type"
  147. #
  148. # Processor families
  149. #
  150. config CPU_SH2
  151. bool
  152. config CPU_SH2A
  153. bool
  154. select CPU_SH2
  155. select UNCACHED_MAPPING
  156. config CPU_SH3
  157. bool
  158. select CPU_HAS_INTEVT
  159. select CPU_HAS_SR_RB
  160. select SYS_SUPPORTS_TMU
  161. config CPU_SH4
  162. bool
  163. select CPU_HAS_INTEVT
  164. select CPU_HAS_SR_RB
  165. select CPU_HAS_FPU if !CPU_SH4AL_DSP
  166. select SYS_SUPPORTS_TMU
  167. select SYS_SUPPORTS_HUGETLBFS if MMU
  168. config CPU_SH4A
  169. bool
  170. select CPU_SH4
  171. config CPU_SH4AL_DSP
  172. bool
  173. select CPU_SH4A
  174. select CPU_HAS_DSP
  175. config CPU_SH5
  176. bool
  177. select CPU_HAS_FPU
  178. select SYS_SUPPORTS_TMU
  179. select SYS_SUPPORTS_HUGETLBFS if MMU
  180. config CPU_SHX2
  181. bool
  182. config CPU_SHX3
  183. bool
  184. select DMA_COHERENT
  185. select SYS_SUPPORTS_SMP
  186. select SYS_SUPPORTS_NUMA
  187. config ARCH_SHMOBILE
  188. bool
  189. select ARCH_SUSPEND_POSSIBLE
  190. select PM
  191. select PM_RUNTIME
  192. config CPU_HAS_PMU
  193. depends on CPU_SH4 || CPU_SH4A
  194. default y
  195. bool
  196. if SUPERH32
  197. choice
  198. prompt "Processor sub-type selection"
  199. #
  200. # Processor subtypes
  201. #
  202. # SH-2 Processor Support
  203. config CPU_SUBTYPE_SH7619
  204. bool "Support SH7619 processor"
  205. select CPU_SH2
  206. select SYS_SUPPORTS_CMT
  207. # SH-2A Processor Support
  208. config CPU_SUBTYPE_SH7201
  209. bool "Support SH7201 processor"
  210. select CPU_SH2A
  211. select CPU_HAS_FPU
  212. select SYS_SUPPORTS_MTU2
  213. config CPU_SUBTYPE_SH7203
  214. bool "Support SH7203 processor"
  215. select CPU_SH2A
  216. select CPU_HAS_FPU
  217. select SYS_SUPPORTS_CMT
  218. select SYS_SUPPORTS_MTU2
  219. select ARCH_WANT_OPTIONAL_GPIOLIB
  220. config CPU_SUBTYPE_SH7206
  221. bool "Support SH7206 processor"
  222. select CPU_SH2A
  223. select SYS_SUPPORTS_CMT
  224. select SYS_SUPPORTS_MTU2
  225. config CPU_SUBTYPE_SH7263
  226. bool "Support SH7263 processor"
  227. select CPU_SH2A
  228. select CPU_HAS_FPU
  229. select SYS_SUPPORTS_CMT
  230. select SYS_SUPPORTS_MTU2
  231. config CPU_SUBTYPE_SH7264
  232. bool "Support SH7264 processor"
  233. select CPU_SH2A
  234. select CPU_HAS_FPU
  235. select SYS_SUPPORTS_CMT
  236. select SYS_SUPPORTS_MTU2
  237. config CPU_SUBTYPE_SH7269
  238. bool "Support SH7269 processor"
  239. select CPU_SH2A
  240. select CPU_HAS_FPU
  241. select SYS_SUPPORTS_CMT
  242. select SYS_SUPPORTS_MTU2
  243. config CPU_SUBTYPE_MXG
  244. bool "Support MX-G processor"
  245. select CPU_SH2A
  246. select SYS_SUPPORTS_MTU2
  247. help
  248. Select MX-G if running on an R8A03022BG part.
  249. # SH-3 Processor Support
  250. config CPU_SUBTYPE_SH7705
  251. bool "Support SH7705 processor"
  252. select CPU_SH3
  253. config CPU_SUBTYPE_SH7706
  254. bool "Support SH7706 processor"
  255. select CPU_SH3
  256. help
  257. Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
  258. config CPU_SUBTYPE_SH7707
  259. bool "Support SH7707 processor"
  260. select CPU_SH3
  261. help
  262. Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
  263. config CPU_SUBTYPE_SH7708
  264. bool "Support SH7708 processor"
  265. select CPU_SH3
  266. help
  267. Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
  268. if you have a 100 Mhz SH-3 HD6417708R CPU.
  269. config CPU_SUBTYPE_SH7709
  270. bool "Support SH7709 processor"
  271. select CPU_SH3
  272. help
  273. Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
  274. config CPU_SUBTYPE_SH7710
  275. bool "Support SH7710 processor"
  276. select CPU_SH3
  277. select CPU_HAS_DSP
  278. help
  279. Select SH7710 if you have a SH3-DSP SH7710 CPU.
  280. config CPU_SUBTYPE_SH7712
  281. bool "Support SH7712 processor"
  282. select CPU_SH3
  283. select CPU_HAS_DSP
  284. help
  285. Select SH7712 if you have a SH3-DSP SH7712 CPU.
  286. config CPU_SUBTYPE_SH7720
  287. bool "Support SH7720 processor"
  288. select CPU_SH3
  289. select CPU_HAS_DSP
  290. select SYS_SUPPORTS_CMT
  291. select ARCH_WANT_OPTIONAL_GPIOLIB
  292. select USB_ARCH_HAS_OHCI
  293. select USB_OHCI_SH if USB_OHCI_HCD
  294. help
  295. Select SH7720 if you have a SH3-DSP SH7720 CPU.
  296. config CPU_SUBTYPE_SH7721
  297. bool "Support SH7721 processor"
  298. select CPU_SH3
  299. select CPU_HAS_DSP
  300. select SYS_SUPPORTS_CMT
  301. select USB_ARCH_HAS_OHCI
  302. select USB_OHCI_SH if USB_OHCI_HCD
  303. help
  304. Select SH7721 if you have a SH3-DSP SH7721 CPU.
  305. # SH-4 Processor Support
  306. config CPU_SUBTYPE_SH7750
  307. bool "Support SH7750 processor"
  308. select CPU_SH4
  309. help
  310. Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
  311. config CPU_SUBTYPE_SH7091
  312. bool "Support SH7091 processor"
  313. select CPU_SH4
  314. help
  315. Select SH7091 if you have an SH-4 based Sega device (such as
  316. the Dreamcast, Naomi, and Naomi 2).
  317. config CPU_SUBTYPE_SH7750R
  318. bool "Support SH7750R processor"
  319. select CPU_SH4
  320. config CPU_SUBTYPE_SH7750S
  321. bool "Support SH7750S processor"
  322. select CPU_SH4
  323. config CPU_SUBTYPE_SH7751
  324. bool "Support SH7751 processor"
  325. select CPU_SH4
  326. help
  327. Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
  328. or if you have a HD6417751R CPU.
  329. config CPU_SUBTYPE_SH7751R
  330. bool "Support SH7751R processor"
  331. select CPU_SH4
  332. config CPU_SUBTYPE_SH7760
  333. bool "Support SH7760 processor"
  334. select CPU_SH4
  335. config CPU_SUBTYPE_SH4_202
  336. bool "Support SH4-202 processor"
  337. select CPU_SH4
  338. # SH-4A Processor Support
  339. config CPU_SUBTYPE_SH7723
  340. bool "Support SH7723 processor"
  341. select CPU_SH4A
  342. select CPU_SHX2
  343. select ARCH_SHMOBILE
  344. select ARCH_SPARSEMEM_ENABLE
  345. select SYS_SUPPORTS_CMT
  346. select ARCH_WANT_OPTIONAL_GPIOLIB
  347. help
  348. Select SH7723 if you have an SH-MobileR2 CPU.
  349. config CPU_SUBTYPE_SH7724
  350. bool "Support SH7724 processor"
  351. select CPU_SH4A
  352. select CPU_SHX2
  353. select ARCH_SHMOBILE
  354. select ARCH_SPARSEMEM_ENABLE
  355. select SYS_SUPPORTS_CMT
  356. select ARCH_WANT_OPTIONAL_GPIOLIB
  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 USB_ARCH_HAS_OHCI
  365. select USB_ARCH_HAS_EHCI
  366. help
  367. Select SH7734 if you have a SH4A SH7734 CPU.
  368. config CPU_SUBTYPE_SH7757
  369. bool "Support SH7757 processor"
  370. select CPU_SH4A
  371. select CPU_SHX2
  372. select ARCH_WANT_OPTIONAL_GPIOLIB
  373. select USB_ARCH_HAS_OHCI
  374. select USB_ARCH_HAS_EHCI
  375. help
  376. Select SH7757 if you have a SH4A SH7757 CPU.
  377. config CPU_SUBTYPE_SH7763
  378. bool "Support SH7763 processor"
  379. select CPU_SH4A
  380. select USB_ARCH_HAS_OHCI
  381. select USB_OHCI_SH if USB_OHCI_HCD
  382. help
  383. Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
  384. config CPU_SUBTYPE_SH7770
  385. bool "Support SH7770 processor"
  386. select CPU_SH4A
  387. config CPU_SUBTYPE_SH7780
  388. bool "Support SH7780 processor"
  389. select CPU_SH4A
  390. config CPU_SUBTYPE_SH7785
  391. bool "Support SH7785 processor"
  392. select CPU_SH4A
  393. select CPU_SHX2
  394. select ARCH_SPARSEMEM_ENABLE
  395. select SYS_SUPPORTS_NUMA
  396. select ARCH_WANT_OPTIONAL_GPIOLIB
  397. config CPU_SUBTYPE_SH7786
  398. bool "Support SH7786 processor"
  399. select CPU_SH4A
  400. select CPU_SHX3
  401. select CPU_HAS_PTEAEX
  402. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  403. select ARCH_WANT_OPTIONAL_GPIOLIB
  404. select USB_ARCH_HAS_OHCI
  405. select USB_OHCI_SH if USB_OHCI_HCD
  406. select USB_ARCH_HAS_EHCI
  407. select USB_EHCI_SH if USB_EHCI_HCD
  408. config CPU_SUBTYPE_SHX3
  409. bool "Support SH-X3 processor"
  410. select CPU_SH4A
  411. select CPU_SHX3
  412. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  413. select ARCH_REQUIRE_GPIOLIB
  414. # SH4AL-DSP Processor Support
  415. config CPU_SUBTYPE_SH7343
  416. bool "Support SH7343 processor"
  417. select CPU_SH4AL_DSP
  418. select ARCH_SHMOBILE
  419. select SYS_SUPPORTS_CMT
  420. config CPU_SUBTYPE_SH7722
  421. bool "Support SH7722 processor"
  422. select CPU_SH4AL_DSP
  423. select CPU_SHX2
  424. select ARCH_SHMOBILE
  425. select ARCH_SPARSEMEM_ENABLE
  426. select SYS_SUPPORTS_NUMA
  427. select SYS_SUPPORTS_CMT
  428. select ARCH_WANT_OPTIONAL_GPIOLIB
  429. config CPU_SUBTYPE_SH7366
  430. bool "Support SH7366 processor"
  431. select CPU_SH4AL_DSP
  432. select CPU_SHX2
  433. select ARCH_SHMOBILE
  434. select ARCH_SPARSEMEM_ENABLE
  435. select SYS_SUPPORTS_NUMA
  436. select SYS_SUPPORTS_CMT
  437. endchoice
  438. endif
  439. if SUPERH64
  440. choice
  441. prompt "Processor sub-type selection"
  442. # SH-5 Processor Support
  443. config CPU_SUBTYPE_SH5_101
  444. bool "Support SH5-101 processor"
  445. select CPU_SH5
  446. config CPU_SUBTYPE_SH5_103
  447. bool "Support SH5-103 processor"
  448. select CPU_SH5
  449. endchoice
  450. endif
  451. source "arch/sh/mm/Kconfig"
  452. source "arch/sh/Kconfig.cpu"
  453. source "arch/sh/boards/Kconfig"
  454. menu "Timer and clock configuration"
  455. config SH_TIMER_TMU
  456. bool "TMU timer driver"
  457. depends on SYS_SUPPORTS_TMU
  458. default y
  459. help
  460. This enables the build of the TMU timer driver.
  461. config SH_TIMER_CMT
  462. bool "CMT timer driver"
  463. depends on SYS_SUPPORTS_CMT
  464. default y
  465. help
  466. This enables build of the CMT timer driver.
  467. config SH_TIMER_MTU2
  468. bool "MTU2 timer driver"
  469. depends on SYS_SUPPORTS_MTU2
  470. default y
  471. help
  472. This enables build of the MTU2 timer driver.
  473. config SH_PCLK_FREQ
  474. int "Peripheral clock frequency (in Hz)"
  475. depends on SH_CLK_CPG_LEGACY
  476. default "31250000" if CPU_SUBTYPE_SH7619
  477. default "33333333" if CPU_SUBTYPE_SH7770 || \
  478. CPU_SUBTYPE_SH7760 || \
  479. CPU_SUBTYPE_SH7705 || \
  480. CPU_SUBTYPE_SH7203 || \
  481. CPU_SUBTYPE_SH7206 || \
  482. CPU_SUBTYPE_SH7263 || \
  483. CPU_SUBTYPE_MXG
  484. default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
  485. default "66000000" if CPU_SUBTYPE_SH4_202
  486. default "50000000"
  487. help
  488. This option is used to specify the peripheral clock frequency.
  489. This is necessary for determining the reference clock value on
  490. platforms lacking an RTC.
  491. config SH_CLK_CPG
  492. def_bool y
  493. config SH_CLK_CPG_LEGACY
  494. depends on SH_CLK_CPG
  495. def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
  496. !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
  497. !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
  498. !CPU_SUBTYPE_SH7269
  499. endmenu
  500. menu "CPU Frequency scaling"
  501. source "drivers/cpufreq/Kconfig"
  502. config SH_CPU_FREQ
  503. tristate "SuperH CPU Frequency driver"
  504. depends on CPU_FREQ
  505. select CPU_FREQ_TABLE
  506. help
  507. This adds the cpufreq driver for SuperH. Any CPU that supports
  508. clock rate rounding through the clock framework can use this
  509. driver. While it will make the kernel slightly larger, this is
  510. harmless for CPUs that don't support rate rounding. The driver
  511. will also generate a notice in the boot log before disabling
  512. itself if the CPU in question is not capable of rate rounding.
  513. For details, take a look at <file:Documentation/cpu-freq>.
  514. If unsure, say N.
  515. endmenu
  516. source "arch/sh/drivers/Kconfig"
  517. endmenu
  518. menu "Kernel features"
  519. source kernel/Kconfig.hz
  520. config KEXEC
  521. bool "kexec system call (EXPERIMENTAL)"
  522. depends on SUPERH32 && EXPERIMENTAL && MMU
  523. help
  524. kexec is a system call that implements the ability to shutdown your
  525. current kernel, and to start another kernel. It is like a reboot
  526. but it is independent of the system firmware. And like a reboot
  527. you can start any kernel with it, not just Linux.
  528. The name comes from the similarity to the exec system call.
  529. It is an ongoing process to be certain the hardware in a machine
  530. is properly shutdown, so do not be surprised if this code does not
  531. initially work for you. It may help to enable device hotplugging
  532. support. As of this writing the exact hardware interface is
  533. strongly in flux, so no good recommendation can be made.
  534. config CRASH_DUMP
  535. bool "kernel crash dumps (EXPERIMENTAL)"
  536. depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
  537. help
  538. Generate crash dump after being started by kexec.
  539. This should be normally only set in special crash dump kernels
  540. which are loaded in the main kernel with kexec-tools into
  541. a specially reserved region and then later executed after
  542. a crash by kdump/kexec. The crash dump kernel must be compiled
  543. to a memory address not used by the main kernel using
  544. PHYSICAL_START.
  545. For more details see Documentation/kdump/kdump.txt
  546. config KEXEC_JUMP
  547. bool "kexec jump (EXPERIMENTAL)"
  548. depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
  549. help
  550. Jump between original kernel and kexeced kernel and invoke
  551. code via KEXEC
  552. config PHYSICAL_START
  553. hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
  554. default MEMORY_START
  555. ---help---
  556. This gives the physical address where the kernel is loaded
  557. and is ordinarily the same as MEMORY_START.
  558. Different values are primarily used in the case of kexec on panic
  559. where the fail safe kernel needs to run at a different address
  560. than the panic-ed kernel.
  561. config SECCOMP
  562. bool "Enable seccomp to safely compute untrusted bytecode"
  563. depends on PROC_FS
  564. help
  565. This kernel feature is useful for number crunching applications
  566. that may need to compute untrusted bytecode during their
  567. execution. By using pipes or other transports made available to
  568. the process as file descriptors supporting the read/write
  569. syscalls, it's possible to isolate those applications in
  570. their own address space using seccomp. Once seccomp is
  571. enabled via prctl, it cannot be disabled and the task is only
  572. allowed to execute a few safe syscalls defined by each seccomp
  573. mode.
  574. If unsure, say N.
  575. config CC_STACKPROTECTOR
  576. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  577. depends on SUPERH32 && EXPERIMENTAL
  578. help
  579. This option turns on the -fstack-protector GCC feature. This
  580. feature puts, at the beginning of functions, a canary value on
  581. the stack just before the return address, and validates
  582. the value just before actually returning. Stack based buffer
  583. overflows (that need to overwrite this return address) now also
  584. overwrite the canary, which gets detected and the attack is then
  585. neutralized via a kernel panic.
  586. This feature requires gcc version 4.2 or above.
  587. config SMP
  588. bool "Symmetric multi-processing support"
  589. depends on SYS_SUPPORTS_SMP
  590. select USE_GENERIC_SMP_HELPERS
  591. ---help---
  592. This enables support for systems with more than one CPU. If you have
  593. a system with only one CPU, like most personal computers, say N. If
  594. you have a system with more than one CPU, say Y.
  595. If you say N here, the kernel will run on single and multiprocessor
  596. machines, but will use only one CPU of a multiprocessor machine. If
  597. you say Y here, the kernel will run on many, but not all,
  598. singleprocessor machines. On a singleprocessor machine, the kernel
  599. will run faster if you say N here.
  600. People using multiprocessor machines who say Y here should also say
  601. Y to "Enhanced Real Time Clock Support", below.
  602. See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  603. available at <http://www.tldp.org/docs.html#howto>.
  604. If you don't know what to do here, say N.
  605. config NR_CPUS
  606. int "Maximum number of CPUs (2-32)"
  607. range 2 32
  608. depends on SMP
  609. default "4" if CPU_SUBTYPE_SHX3
  610. default "2"
  611. help
  612. This allows you to specify the maximum number of CPUs which this
  613. kernel will support. The maximum supported value is 32 and the
  614. minimum value which makes sense is 2.
  615. This is purely to save memory - each supported CPU adds
  616. approximately eight kilobytes to the kernel image.
  617. config HOTPLUG_CPU
  618. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  619. depends on SMP && HOTPLUG && EXPERIMENTAL
  620. help
  621. Say Y here to experiment with turning CPUs off and on. CPUs
  622. can be controlled through /sys/devices/system/cpu.
  623. source "kernel/Kconfig.preempt"
  624. config GUSA
  625. def_bool y
  626. depends on !SMP && SUPERH32
  627. help
  628. This enables support for gUSA (general UserSpace Atomicity).
  629. This is the default implementation for both UP and non-ll/sc
  630. CPUs, and is used by the libc, amongst others.
  631. For additional information, design information can be found
  632. in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
  633. This should only be disabled for special cases where alternate
  634. atomicity implementations exist.
  635. config GUSA_RB
  636. bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
  637. depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
  638. help
  639. Enabling this option will allow the kernel to implement some
  640. atomic operations using a software implementation of load-locked/
  641. store-conditional (LLSC). On machines which do not have hardware
  642. LLSC, this should be more efficient than the other alternative of
  643. disabling interrupts around the atomic sequence.
  644. config HW_PERF_EVENTS
  645. bool "Enable hardware performance counter support for perf events"
  646. depends on PERF_EVENTS && CPU_HAS_PMU
  647. default y
  648. help
  649. Enable hardware performance counter support for perf events. If
  650. disabled, perf events will use software events only.
  651. source "drivers/sh/Kconfig"
  652. endmenu
  653. menu "Boot options"
  654. config ZERO_PAGE_OFFSET
  655. hex
  656. default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
  657. SH_7751_SOLUTION_ENGINE
  658. default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
  659. default "0x00002000" if PAGE_SIZE_8KB
  660. default "0x00001000"
  661. help
  662. This sets the default offset of zero page.
  663. config BOOT_LINK_OFFSET
  664. hex
  665. default "0x00210000" if SH_SHMIN
  666. default "0x00400000" if SH_CAYMAN
  667. default "0x00810000" if SH_7780_SOLUTION_ENGINE
  668. default "0x009e0000" if SH_TITAN
  669. default "0x01800000" if SH_SDK7780
  670. default "0x02000000" if SH_EDOSK7760
  671. default "0x00800000"
  672. help
  673. This option allows you to set the link address offset of the zImage.
  674. This can be useful if you are on a board which has a small amount of
  675. memory.
  676. config ENTRY_OFFSET
  677. hex
  678. default "0x00001000" if PAGE_SIZE_4KB
  679. default "0x00002000" if PAGE_SIZE_8KB
  680. default "0x00004000" if PAGE_SIZE_16KB
  681. default "0x00010000" if PAGE_SIZE_64KB
  682. default "0x00000000"
  683. config ROMIMAGE_MMCIF
  684. bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
  685. depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
  686. help
  687. Say Y here to include experimental MMCIF loading code in
  688. romImage. With this enabled it is possible to write the romImage
  689. kernel image to an MMC card and boot the kernel straight from
  690. the reset vector. At reset the processor Mask ROM will load the
  691. first part of the romImage which in turn loads the rest the kernel
  692. image to RAM using the MMCIF hardware block.
  693. choice
  694. prompt "Kernel command line"
  695. optional
  696. default CMDLINE_OVERWRITE
  697. help
  698. Setting this option allows the kernel command line arguments
  699. to be set.
  700. config CMDLINE_OVERWRITE
  701. bool "Overwrite bootloader kernel arguments"
  702. help
  703. Given string will overwrite any arguments passed in by
  704. a bootloader.
  705. config CMDLINE_EXTEND
  706. bool "Extend bootloader kernel arguments"
  707. help
  708. Given string will be concatenated with arguments passed in
  709. by a bootloader.
  710. endchoice
  711. config CMDLINE
  712. string "Kernel command line arguments string"
  713. depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
  714. default "console=ttySC1,115200"
  715. endmenu
  716. menu "Bus options"
  717. config SUPERHYWAY
  718. tristate "SuperHyway Bus support"
  719. depends on CPU_SUBTYPE_SH4_202
  720. config MAPLE
  721. bool "Maple Bus support"
  722. depends on SH_DREAMCAST
  723. help
  724. The Maple Bus is SEGA's serial communication bus for peripherals
  725. on the Dreamcast. Without this bus support you won't be able to
  726. get your Dreamcast keyboard etc to work, so most users
  727. probably want to say 'Y' here, unless you are only using the
  728. Dreamcast with a serial line terminal or a remote network
  729. connection.
  730. config PCI
  731. bool "PCI support"
  732. depends on SYS_SUPPORTS_PCI
  733. select PCI_DOMAINS
  734. select GENERIC_PCI_IOMAP
  735. select NO_GENERIC_PCI_IOPORT_MAP
  736. help
  737. Find out whether you have a PCI motherboard. PCI is the name of a
  738. bus system, i.e. the way the CPU talks to the other stuff inside
  739. your box. If you have PCI, say Y, otherwise N.
  740. config PCI_DOMAINS
  741. bool
  742. source "drivers/pci/pcie/Kconfig"
  743. source "drivers/pci/Kconfig"
  744. source "drivers/pcmcia/Kconfig"
  745. source "drivers/pci/hotplug/Kconfig"
  746. endmenu
  747. menu "Executable file formats"
  748. source "fs/Kconfig.binfmt"
  749. endmenu
  750. menu "Power management options (EXPERIMENTAL)"
  751. depends on EXPERIMENTAL
  752. source "kernel/power/Kconfig"
  753. source "drivers/cpuidle/Kconfig"
  754. endmenu
  755. source "net/Kconfig"
  756. source "drivers/Kconfig"
  757. source "fs/Kconfig"
  758. source "arch/sh/Kconfig.debug"
  759. source "security/Kconfig"
  760. source "crypto/Kconfig"
  761. source "lib/Kconfig"