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