Kconfig 25 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006
  1. source "arch/powerpc/platforms/Kconfig.cputype"
  2. config PPC32
  3. bool
  4. default y if !PPC64
  5. config 32BIT
  6. bool
  7. default y if PPC32
  8. config 64BIT
  9. bool
  10. default y if PPC64
  11. config WORD_SIZE
  12. int
  13. default 64 if PPC64
  14. default 32 if !PPC64
  15. config ARCH_PHYS_ADDR_T_64BIT
  16. def_bool PPC64 || PHYS_64BIT
  17. config ARCH_DMA_ADDR_T_64BIT
  18. def_bool ARCH_PHYS_ADDR_T_64BIT
  19. config MMU
  20. bool
  21. default y
  22. config GENERIC_CMOS_UPDATE
  23. def_bool y
  24. config GENERIC_TIME_VSYSCALL
  25. def_bool y
  26. config GENERIC_CLOCKEVENTS
  27. def_bool y
  28. config GENERIC_HARDIRQS
  29. bool
  30. default y
  31. config GENERIC_HARDIRQS_NO__DO_IRQ
  32. bool
  33. default y
  34. config HAVE_SETUP_PER_CPU_AREA
  35. def_bool PPC64
  36. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  37. def_bool PPC64
  38. config IRQ_PER_CPU
  39. bool
  40. default y
  41. config NR_IRQS
  42. int "Number of virtual interrupt numbers"
  43. range 32 32768
  44. default "512"
  45. help
  46. This defines the number of virtual interrupt numbers the kernel
  47. can manage. Virtual interrupt numbers are what you see in
  48. /proc/interrupts. If you configure your system to have too few,
  49. drivers will fail to load or worse - handle with care.
  50. config STACKTRACE_SUPPORT
  51. bool
  52. default y
  53. config HAVE_LATENCYTOP_SUPPORT
  54. def_bool y
  55. config TRACE_IRQFLAGS_SUPPORT
  56. bool
  57. default y
  58. config LOCKDEP_SUPPORT
  59. bool
  60. default y
  61. config RWSEM_GENERIC_SPINLOCK
  62. bool
  63. config RWSEM_XCHGADD_ALGORITHM
  64. bool
  65. default y
  66. config GENERIC_LOCKBREAK
  67. bool
  68. default y
  69. depends on SMP && PREEMPT
  70. config ARCH_HAS_ILOG2_U32
  71. bool
  72. default y
  73. config ARCH_HAS_ILOG2_U64
  74. bool
  75. default y if 64BIT
  76. config GENERIC_HWEIGHT
  77. bool
  78. default y
  79. config GENERIC_FIND_NEXT_BIT
  80. bool
  81. default y
  82. config GENERIC_GPIO
  83. bool
  84. help
  85. Generic GPIO API support
  86. config ARCH_NO_VIRT_TO_BUS
  87. def_bool PPC64
  88. config PPC
  89. bool
  90. default y
  91. select OF
  92. select OF_EARLY_FLATTREE
  93. select HAVE_FTRACE_MCOUNT_RECORD
  94. select HAVE_DYNAMIC_FTRACE
  95. select HAVE_FUNCTION_TRACER
  96. select HAVE_FUNCTION_GRAPH_TRACER
  97. select ARCH_WANT_OPTIONAL_GPIOLIB
  98. select HAVE_IDE
  99. select HAVE_IOREMAP_PROT
  100. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  101. select HAVE_KPROBES
  102. select HAVE_ARCH_KGDB
  103. select HAVE_KRETPROBES
  104. select HAVE_ARCH_TRACEHOOK
  105. select HAVE_MEMBLOCK
  106. select HAVE_DMA_ATTRS
  107. select HAVE_DMA_API_DEBUG
  108. select USE_GENERIC_SMP_HELPERS if SMP
  109. select HAVE_OPROFILE
  110. select HAVE_SYSCALL_WRAPPERS if PPC64
  111. select GENERIC_ATOMIC64 if PPC32
  112. select HAVE_IRQ_WORK
  113. select HAVE_PERF_EVENTS
  114. select HAVE_REGS_AND_STACK_ACCESS_API
  115. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  116. config EARLY_PRINTK
  117. bool
  118. default y
  119. config COMPAT
  120. bool
  121. default y if PPC64
  122. select COMPAT_BINFMT_ELF
  123. config SYSVIPC_COMPAT
  124. bool
  125. depends on COMPAT && SYSVIPC
  126. default y
  127. # All PPC32s use generic nvram driver through ppc_md
  128. config GENERIC_NVRAM
  129. bool
  130. default y if PPC32
  131. config SCHED_OMIT_FRAME_POINTER
  132. bool
  133. default y
  134. config ARCH_MAY_HAVE_PC_FDC
  135. bool
  136. default !PPC_PSERIES || PCI
  137. config PPC_OF
  138. def_bool y
  139. config PPC_UDBG_16550
  140. bool
  141. default n
  142. config GENERIC_TBSYNC
  143. bool
  144. default y if PPC32 && SMP
  145. default n
  146. config AUDIT_ARCH
  147. bool
  148. default y
  149. config GENERIC_BUG
  150. bool
  151. default y
  152. depends on BUG
  153. config SYS_SUPPORTS_APM_EMULATION
  154. default y if PMAC_APM_EMU
  155. bool
  156. config DEFAULT_UIMAGE
  157. bool
  158. help
  159. Used to allow a board to specify it wants a uImage built by default
  160. default n
  161. config REDBOOT
  162. bool
  163. config ARCH_HIBERNATION_POSSIBLE
  164. bool
  165. default y
  166. config ARCH_SUSPEND_POSSIBLE
  167. def_bool y
  168. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  169. PPC_85xx || PPC_86xx || PPC_PSERIES || 44x || 40x
  170. config PPC_DCR_NATIVE
  171. bool
  172. default n
  173. config PPC_DCR_MMIO
  174. bool
  175. default n
  176. config PPC_DCR
  177. bool
  178. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  179. default y
  180. config PPC_OF_PLATFORM_PCI
  181. bool
  182. depends on PCI
  183. depends on PPC64 # not supported on 32 bits yet
  184. default n
  185. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  186. def_bool y
  187. config PPC_ADV_DEBUG_REGS
  188. bool
  189. depends on 40x || BOOKE
  190. default y
  191. config PPC_ADV_DEBUG_IACS
  192. int
  193. depends on PPC_ADV_DEBUG_REGS
  194. default 4 if 44x
  195. default 2
  196. config PPC_ADV_DEBUG_DACS
  197. int
  198. depends on PPC_ADV_DEBUG_REGS
  199. default 2
  200. config PPC_ADV_DEBUG_DVCS
  201. int
  202. depends on PPC_ADV_DEBUG_REGS
  203. default 2 if 44x
  204. default 0
  205. config PPC_ADV_DEBUG_DAC_RANGE
  206. bool
  207. depends on PPC_ADV_DEBUG_REGS && 44x
  208. default y
  209. source "init/Kconfig"
  210. source "kernel/Kconfig.freezer"
  211. source "arch/powerpc/sysdev/Kconfig"
  212. source "arch/powerpc/platforms/Kconfig"
  213. menu "Kernel options"
  214. config HIGHMEM
  215. bool "High memory support"
  216. depends on PPC32
  217. source kernel/time/Kconfig
  218. source kernel/Kconfig.hz
  219. source kernel/Kconfig.preempt
  220. source "fs/Kconfig.binfmt"
  221. config HUGETLB_PAGE_SIZE_VARIABLE
  222. bool
  223. depends on HUGETLB_PAGE
  224. default y
  225. config MATH_EMULATION
  226. bool "Math emulation"
  227. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  228. ---help---
  229. Some PowerPC chips designed for embedded applications do not have
  230. a floating-point unit and therefore do not implement the
  231. floating-point instructions in the PowerPC instruction set. If you
  232. say Y here, the kernel will include code to emulate a floating-point
  233. unit, which will allow programs that use floating-point
  234. instructions to run.
  235. config 8XX_MINIMAL_FPEMU
  236. bool "Minimal math emulation for 8xx"
  237. depends on 8xx && !MATH_EMULATION
  238. help
  239. Older arch/ppc kernels still emulated a few floating point
  240. instructions such as load and store, even when full math
  241. emulation is disabled. Say "Y" here if you want to preserve
  242. this behavior.
  243. It is recommended that you build a soft-float userspace instead.
  244. config IOMMU_HELPER
  245. def_bool PPC64
  246. config SWIOTLB
  247. bool "SWIOTLB support"
  248. default n
  249. select IOMMU_HELPER
  250. ---help---
  251. Support for IO bounce buffering for systems without an IOMMU.
  252. This allows us to DMA to the full physical address space on
  253. platforms where the size of a physical address is larger
  254. than the bus address. Not all platforms support this.
  255. config HOTPLUG_CPU
  256. bool "Support for enabling/disabling CPUs"
  257. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  258. ---help---
  259. Say Y here to be able to disable and re-enable individual
  260. CPUs at runtime on SMP machines.
  261. Say N if you are unsure.
  262. config ARCH_CPU_PROBE_RELEASE
  263. def_bool y
  264. depends on HOTPLUG_CPU
  265. config ARCH_ENABLE_MEMORY_HOTPLUG
  266. def_bool y
  267. config ARCH_HAS_WALK_MEMORY
  268. def_bool y
  269. config ARCH_ENABLE_MEMORY_HOTREMOVE
  270. def_bool y
  271. config KEXEC
  272. bool "kexec system call (EXPERIMENTAL)"
  273. depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL
  274. help
  275. kexec is a system call that implements the ability to shutdown your
  276. current kernel, and to start another kernel. It is like a reboot
  277. but it is independent of the system firmware. And like a reboot
  278. you can start any kernel with it, not just Linux.
  279. The name comes from the similarity to the exec system call.
  280. It is an ongoing process to be certain the hardware in a machine
  281. is properly shutdown, so do not be surprised if this code does not
  282. initially work for you. It may help to enable device hotplugging
  283. support. As of this writing the exact hardware interface is
  284. strongly in flux, so no good recommendation can be made.
  285. config CRASH_DUMP
  286. bool "Build a kdump crash kernel"
  287. depends on PPC64 || 6xx || FSL_BOOKE
  288. select RELOCATABLE if PPC64 || FSL_BOOKE
  289. help
  290. Build a kernel suitable for use as a kdump capture kernel.
  291. The same kernel binary can be used as production kernel and dump
  292. capture kernel.
  293. config PHYP_DUMP
  294. bool "Hypervisor-assisted dump (EXPERIMENTAL)"
  295. depends on PPC_PSERIES && EXPERIMENTAL
  296. help
  297. Hypervisor-assisted dump is meant to be a kdump replacement
  298. offering robustness and speed not possible without system
  299. hypervisor assistance.
  300. If unsure, say "N"
  301. config PPCBUG_NVRAM
  302. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  303. default y if PPC_PREP
  304. config IRQ_ALL_CPUS
  305. bool "Distribute interrupts on all CPUs by default"
  306. depends on SMP && !MV64360
  307. help
  308. This option gives the kernel permission to distribute IRQs across
  309. multiple CPUs. Saying N here will route all IRQs to the first
  310. CPU. Generally saying Y is safe, although some problems have been
  311. reported with SMP Power Macintoshes with this option enabled.
  312. config SPARSE_IRQ
  313. bool "Support sparse irq numbering"
  314. default n
  315. help
  316. This enables support for sparse irqs. This is useful for distro
  317. kernels that want to define a high CONFIG_NR_CPUS value but still
  318. want to have low kernel memory footprint on smaller machines.
  319. ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
  320. out the irq_desc[] array in a more NUMA-friendly way. )
  321. If you don't know what to do here, say N.
  322. config NUMA
  323. bool "NUMA support"
  324. depends on PPC64
  325. default y if SMP && PPC_PSERIES
  326. config NODES_SHIFT
  327. int
  328. default "8" if PPC64
  329. default "4"
  330. depends on NEED_MULTIPLE_NODES
  331. config MAX_ACTIVE_REGIONS
  332. int
  333. default "256" if PPC64
  334. default "32"
  335. config ARCH_SELECT_MEMORY_MODEL
  336. def_bool y
  337. depends on PPC64
  338. config ARCH_FLATMEM_ENABLE
  339. def_bool y
  340. depends on (PPC64 && !NUMA) || PPC32
  341. config ARCH_SPARSEMEM_ENABLE
  342. def_bool y
  343. depends on PPC64
  344. select SPARSEMEM_VMEMMAP_ENABLE
  345. config ARCH_SPARSEMEM_DEFAULT
  346. def_bool y
  347. depends on (SMP && PPC_PSERIES) || PPC_PS3
  348. config ARCH_POPULATES_NODE_MAP
  349. def_bool y
  350. config SYS_SUPPORTS_HUGETLBFS
  351. def_bool y
  352. depends on PPC_BOOK3S_64
  353. source "mm/Kconfig"
  354. config ARCH_MEMORY_PROBE
  355. def_bool y
  356. depends on MEMORY_HOTPLUG
  357. # Some NUMA nodes have memory ranges that span
  358. # other nodes. Even though a pfn is valid and
  359. # between a node's start and end pfns, it may not
  360. # reside on that node. See memmap_init_zone()
  361. # for details.
  362. config NODES_SPAN_OTHER_NODES
  363. def_bool y
  364. depends on NEED_MULTIPLE_NODES
  365. config PPC_HAS_HASH_64K
  366. bool
  367. depends on PPC64
  368. default n
  369. config STDBINUTILS
  370. bool "Using standard binutils settings"
  371. depends on 44x
  372. default y
  373. help
  374. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  375. Note, that kernel will be able to run only those applications,
  376. which had been compiled using binutils later than 2.17.50.0.3 with
  377. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  378. the older binutils, you can patch them with a trivial patch, which
  379. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  380. choice
  381. prompt "Page size"
  382. default PPC_4K_PAGES
  383. help
  384. Select the kernel logical page size. Increasing the page size
  385. will reduce software overhead at each page boundary, allow
  386. hardware prefetch mechanisms to be more effective, and allow
  387. larger dma transfers increasing IO efficiency and reducing
  388. overhead. However the utilization of memory will increase.
  389. For example, each cached file will using a multiple of the
  390. page size to hold its contents and the difference between the
  391. end of file and the end of page is wasted.
  392. Some dedicated systems, such as software raid serving with
  393. accelerated calculations, have shown significant increases.
  394. If you configure a 64 bit kernel for 64k pages but the
  395. processor does not support them, then the kernel will simulate
  396. them with 4k pages, loading them on demand, but with the
  397. reduced software overhead and larger internal fragmentation.
  398. For the 32 bit kernel, a large page option will not be offered
  399. unless it is supported by the configured processor.
  400. If unsure, choose 4K_PAGES.
  401. config PPC_4K_PAGES
  402. bool "4k page size"
  403. config PPC_16K_PAGES
  404. bool "16k page size" if 44x
  405. config PPC_64K_PAGES
  406. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  407. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  408. config PPC_256K_PAGES
  409. bool "256k page size" if 44x
  410. depends on !STDBINUTILS
  411. help
  412. Make the page size 256k.
  413. As the ELF standard only requires alignment to support page
  414. sizes up to 64k, you will need to compile all of your user
  415. space applications with a non-standard binutils settings
  416. (see the STDBINUTILS description for details).
  417. Say N unless you know what you are doing.
  418. endchoice
  419. config FORCE_MAX_ZONEORDER
  420. int "Maximum zone order"
  421. range 9 64 if PPC64 && PPC_64K_PAGES
  422. default "9" if PPC64 && PPC_64K_PAGES
  423. range 13 64 if PPC64 && !PPC_64K_PAGES
  424. default "13" if PPC64 && !PPC_64K_PAGES
  425. range 9 64 if PPC32 && PPC_16K_PAGES
  426. default "9" if PPC32 && PPC_16K_PAGES
  427. range 7 64 if PPC32 && PPC_64K_PAGES
  428. default "7" if PPC32 && PPC_64K_PAGES
  429. range 5 64 if PPC32 && PPC_256K_PAGES
  430. default "5" if PPC32 && PPC_256K_PAGES
  431. range 11 64
  432. default "11"
  433. help
  434. The kernel memory allocator divides physically contiguous memory
  435. blocks into "zones", where each zone is a power of two number of
  436. pages. This option selects the largest power of two that the kernel
  437. keeps in the memory allocator. If you need to allocate very large
  438. blocks of physically contiguous memory, then you may need to
  439. increase this value.
  440. This config option is actually maximum order plus one. For example,
  441. a value of 11 means that the largest free memory block is 2^10 pages.
  442. The page size is not necessarily 4KB. For example, on 64-bit
  443. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  444. this in mind when choosing a value for this option.
  445. config PPC_SUBPAGE_PROT
  446. bool "Support setting protections for 4k subpages"
  447. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  448. help
  449. This option adds support for a system call to allow user programs
  450. to set access permissions (read/write, readonly, or no access)
  451. on the 4k subpages of each 64k page.
  452. config SCHED_SMT
  453. bool "SMT (Hyperthreading) scheduler support"
  454. depends on PPC64 && SMP
  455. help
  456. SMT scheduler support improves the CPU scheduler's decision making
  457. when dealing with POWER5 cpus at a cost of slightly increased
  458. overhead in some places. If unsure say N here.
  459. config CMDLINE_BOOL
  460. bool "Default bootloader kernel arguments"
  461. config CMDLINE
  462. string "Initial kernel command string"
  463. depends on CMDLINE_BOOL
  464. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  465. help
  466. On some platforms, there is currently no way for the boot loader to
  467. pass arguments to the kernel. For these platforms, you can supply
  468. some command-line options at build time by entering them here. In
  469. most cases you will need to specify the root device here.
  470. config EXTRA_TARGETS
  471. string "Additional default image types"
  472. help
  473. List additional targets to be built by the bootwrapper here (separated
  474. by spaces). This is useful for targets that depend of device tree
  475. files in the .dts directory.
  476. Targets in this list will be build as part of the default build
  477. target, or when the user does a 'make zImage' or a
  478. 'make zImage.initrd'.
  479. If unsure, leave blank
  480. config ARCH_WANTS_FREEZER_CONTROL
  481. def_bool y
  482. depends on ADB_PMU
  483. source kernel/power/Kconfig
  484. config SECCOMP
  485. bool "Enable seccomp to safely compute untrusted bytecode"
  486. depends on PROC_FS
  487. default y
  488. help
  489. This kernel feature is useful for number crunching applications
  490. that may need to compute untrusted bytecode during their
  491. execution. By using pipes or other transports made available to
  492. the process as file descriptors supporting the read/write
  493. syscalls, it's possible to isolate those applications in
  494. their own address space using seccomp. Once seccomp is
  495. enabled via /proc/<pid>/seccomp, it cannot be disabled
  496. and the task is only allowed to execute a few safe syscalls
  497. defined by each seccomp mode.
  498. If unsure, say Y. Only embedded should say N here.
  499. endmenu
  500. config ISA_DMA_API
  501. bool
  502. default !PPC_ISERIES || PCI
  503. menu "Bus options"
  504. config ISA
  505. bool "Support for ISA-bus hardware"
  506. depends on PPC_PREP || PPC_CHRP
  507. select PPC_I8259
  508. help
  509. Find out whether you have ISA slots on your motherboard. ISA is the
  510. name of a bus system, i.e. the way the CPU talks to the other stuff
  511. inside your box. If you have an Apple machine, say N here; if you
  512. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  513. you have an embedded board, consult your board documentation.
  514. config ZONE_DMA
  515. bool
  516. default y
  517. config NEED_DMA_MAP_STATE
  518. def_bool (PPC64 || NOT_COHERENT_CACHE)
  519. config NEED_SG_DMA_LENGTH
  520. def_bool y
  521. config GENERIC_ISA_DMA
  522. bool
  523. depends on ISA_DMA_API
  524. default y
  525. config PPC_INDIRECT_PCI
  526. bool
  527. depends on PCI
  528. default y if 40x || 44x
  529. default n
  530. config EISA
  531. bool
  532. config SBUS
  533. bool
  534. config FSL_SOC
  535. bool
  536. config FSL_PCI
  537. bool
  538. select PPC_INDIRECT_PCI
  539. select PCI_QUIRKS
  540. config FSL_PMC
  541. bool
  542. default y
  543. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  544. help
  545. Freescale MPC85xx/MPC86xx power management controller support
  546. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  547. config PPC4xx_CPM
  548. bool
  549. default y
  550. depends on SUSPEND && (44x || 40x)
  551. help
  552. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  553. It also enables support for two different idle states (idle-wait
  554. and idle-doze).
  555. config 4xx_SOC
  556. bool
  557. config FSL_LBC
  558. bool "Freescale Local Bus support"
  559. depends on FSL_SOC
  560. help
  561. Enables reporting of errors from the Freescale local bus
  562. controller. Also contains some common code used by
  563. drivers for specific local bus peripherals.
  564. config FSL_GTM
  565. bool
  566. depends on PPC_83xx || QUICC_ENGINE || CPM2
  567. help
  568. Freescale General-purpose Timers support
  569. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  570. config MCA
  571. bool
  572. # Platforms that what PCI turned unconditionally just do select PCI
  573. # in their config node. Platforms that want to choose at config
  574. # time should select PPC_PCI_CHOICE
  575. config PPC_PCI_CHOICE
  576. bool
  577. config PCI
  578. bool "PCI support" if PPC_PCI_CHOICE
  579. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  580. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  581. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  582. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  583. select ARCH_SUPPORTS_MSI
  584. help
  585. Find out whether your system includes a PCI bus. PCI is the name of
  586. a bus system, i.e. the way the CPU talks to the other stuff inside
  587. your box. If you say Y here, the kernel will include drivers and
  588. infrastructure code to support PCI bus devices.
  589. config PCI_DOMAINS
  590. def_bool PCI
  591. config PCI_SYSCALL
  592. def_bool PCI
  593. config PCI_QSPAN
  594. bool "QSpan PCI"
  595. depends on !4xx && !CPM2 && 8xx
  596. select PPC_I8259
  597. help
  598. Say Y here if you have a system based on a Motorola 8xx-series
  599. embedded processor with a QSPAN PCI interface, otherwise say N.
  600. config PCI_8260
  601. bool
  602. depends on PCI && 8260
  603. select PPC_INDIRECT_PCI
  604. default y
  605. config 8260_PCI9
  606. bool "Enable workaround for MPC826x erratum PCI 9"
  607. depends on PCI_8260 && !8272
  608. default y
  609. choice
  610. prompt "IDMA channel for PCI 9 workaround"
  611. depends on 8260_PCI9
  612. config 8260_PCI9_IDMA1
  613. bool "IDMA1"
  614. config 8260_PCI9_IDMA2
  615. bool "IDMA2"
  616. config 8260_PCI9_IDMA3
  617. bool "IDMA3"
  618. config 8260_PCI9_IDMA4
  619. bool "IDMA4"
  620. endchoice
  621. source "drivers/pci/pcie/Kconfig"
  622. source "drivers/pci/Kconfig"
  623. source "drivers/pcmcia/Kconfig"
  624. source "drivers/pci/hotplug/Kconfig"
  625. config HAS_RAPIDIO
  626. bool
  627. default n
  628. config RAPIDIO
  629. bool "RapidIO support"
  630. depends on HAS_RAPIDIO
  631. help
  632. If you say Y here, the kernel will include drivers and
  633. infrastructure code to support RapidIO interconnect devices.
  634. source "drivers/rapidio/Kconfig"
  635. endmenu
  636. menu "Advanced setup"
  637. depends on PPC32
  638. config ADVANCED_OPTIONS
  639. bool "Prompt for advanced kernel configuration options"
  640. help
  641. This option will enable prompting for a variety of advanced kernel
  642. configuration options. These options can cause the kernel to not
  643. work if they are set incorrectly, but can be used to optimize certain
  644. aspects of kernel memory management.
  645. Unless you know what you are doing, say N here.
  646. comment "Default settings for advanced configuration options are used"
  647. depends on !ADVANCED_OPTIONS
  648. config LOWMEM_SIZE_BOOL
  649. bool "Set maximum low memory"
  650. depends on ADVANCED_OPTIONS
  651. help
  652. This option allows you to set the maximum amount of memory which
  653. will be used as "low memory", that is, memory which the kernel can
  654. access directly, without having to set up a kernel virtual mapping.
  655. This can be useful in optimizing the layout of kernel virtual
  656. memory.
  657. Say N here unless you know what you are doing.
  658. config LOWMEM_SIZE
  659. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  660. default "0x30000000"
  661. config LOWMEM_CAM_NUM_BOOL
  662. bool "Set number of CAMs to use to map low memory"
  663. depends on ADVANCED_OPTIONS && FSL_BOOKE
  664. help
  665. This option allows you to set the maximum number of CAM slots that
  666. will be used to map low memory. There are a limited number of slots
  667. available and even more limited number that will fit in the L1 MMU.
  668. However, using more entries will allow mapping more low memory. This
  669. can be useful in optimizing the layout of kernel virtual memory.
  670. Say N here unless you know what you are doing.
  671. config LOWMEM_CAM_NUM
  672. depends on FSL_BOOKE
  673. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  674. default 3
  675. config RELOCATABLE
  676. bool "Build a relocatable kernel (EXPERIMENTAL)"
  677. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  678. help
  679. This builds a kernel image that is capable of running at the
  680. location the kernel is loaded at (some alignment restrictions may
  681. exist).
  682. One use is for the kexec on panic case where the recovery kernel
  683. must live at a different physical address than the primary
  684. kernel.
  685. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  686. it has been loaded at and the compile time physical addresses
  687. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  688. setting can still be useful to bootwrappers that need to know the
  689. load location of the kernel (eg. u-boot/mkimage).
  690. config PAGE_OFFSET_BOOL
  691. bool "Set custom page offset address"
  692. depends on ADVANCED_OPTIONS
  693. help
  694. This option allows you to set the kernel virtual address at which
  695. the kernel will map low memory. This can be useful in optimizing
  696. the virtual memory layout of the system.
  697. Say N here unless you know what you are doing.
  698. config PAGE_OFFSET
  699. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  700. default "0xc0000000"
  701. config KERNEL_START_BOOL
  702. bool "Set custom kernel base address"
  703. depends on ADVANCED_OPTIONS
  704. help
  705. This option allows you to set the kernel virtual address at which
  706. the kernel will be loaded. Normally this should match PAGE_OFFSET
  707. however there are times (like kdump) that one might not want them
  708. to be the same.
  709. Say N here unless you know what you are doing.
  710. config KERNEL_START
  711. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  712. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  713. default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
  714. default "0xc0000000"
  715. config PHYSICAL_START_BOOL
  716. bool "Set physical address where the kernel is loaded"
  717. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  718. help
  719. This gives the physical address where the kernel is loaded.
  720. Say N here unless you know what you are doing.
  721. config PHYSICAL_START
  722. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  723. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
  724. default "0x00000000"
  725. config PHYSICAL_ALIGN
  726. hex
  727. default "0x04000000" if FSL_BOOKE
  728. help
  729. This value puts the alignment restrictions on physical address
  730. where kernel is loaded and run from. Kernel is compiled for an
  731. address which meets above alignment restriction.
  732. config TASK_SIZE_BOOL
  733. bool "Set custom user task size"
  734. depends on ADVANCED_OPTIONS
  735. help
  736. This option allows you to set the amount of virtual address space
  737. allocated to user tasks. This can be useful in optimizing the
  738. virtual memory layout of the system.
  739. Say N here unless you know what you are doing.
  740. config TASK_SIZE
  741. hex "Size of user task space" if TASK_SIZE_BOOL
  742. default "0x80000000" if PPC_PREP || PPC_8xx
  743. default "0xc0000000"
  744. config CONSISTENT_SIZE_BOOL
  745. bool "Set custom consistent memory pool size"
  746. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  747. help
  748. This option allows you to set the size of the
  749. consistent memory pool. This pool of virtual memory
  750. is used to make consistent memory allocations.
  751. config CONSISTENT_SIZE
  752. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  753. default "0x00200000" if NOT_COHERENT_CACHE
  754. config PIN_TLB
  755. bool "Pinned Kernel TLBs (860 ONLY)"
  756. depends on ADVANCED_OPTIONS && 8xx
  757. endmenu
  758. if PPC64
  759. config RELOCATABLE
  760. bool "Build a relocatable kernel"
  761. help
  762. This builds a kernel image that is capable of running anywhere
  763. in the RMA (real memory area) at any 16k-aligned base address.
  764. The kernel is linked as a position-independent executable (PIE)
  765. and contains dynamic relocations which are processed early
  766. in the bootup process.
  767. One use is for the kexec on panic case where the recovery kernel
  768. must live at a different physical address than the primary
  769. kernel.
  770. config PAGE_OFFSET
  771. hex
  772. default "0xc000000000000000"
  773. config KERNEL_START
  774. hex
  775. default "0xc000000000000000"
  776. config PHYSICAL_START
  777. hex
  778. default "0x00000000"
  779. endif
  780. source "net/Kconfig"
  781. source "drivers/Kconfig"
  782. source "fs/Kconfig"
  783. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  784. source "lib/Kconfig"
  785. source "arch/powerpc/Kconfig.debug"
  786. source "security/Kconfig"
  787. config KEYS_COMPAT
  788. bool
  789. depends on COMPAT && KEYS
  790. default y
  791. source "crypto/Kconfig"
  792. config PPC_CLOCK
  793. bool
  794. default n
  795. select HAVE_CLK
  796. config PPC_LIB_RHEAP
  797. bool
  798. source "arch/powerpc/kvm/Kconfig"