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