Kconfig 25 KB

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  1. # For a description of the syntax of this configuration file,
  2. # see Documentation/kbuild/kconfig-language.txt.
  3. #
  4. mainmenu "Linux/PowerPC Kernel Configuration"
  5. source "arch/powerpc/platforms/Kconfig.cputype"
  6. config PPC32
  7. bool
  8. default y if !PPC64
  9. config 64BIT
  10. bool
  11. default y if PPC64
  12. config WORD_SIZE
  13. int
  14. default 64 if PPC64
  15. default 32 if !PPC64
  16. config ARCH_PHYS_ADDR_T_64BIT
  17. def_bool PPC64 || PHYS_64BIT
  18. config MMU
  19. bool
  20. default y
  21. config GENERIC_CMOS_UPDATE
  22. def_bool y
  23. config GENERIC_TIME
  24. def_bool y
  25. config GENERIC_TIME_VSYSCALL
  26. def_bool y
  27. config GENERIC_CLOCKEVENTS
  28. def_bool y
  29. config GENERIC_HARDIRQS
  30. bool
  31. default y
  32. config GENERIC_HARDIRQS_NO__DO_IRQ
  33. bool
  34. default y
  35. config HAVE_SETUP_PER_CPU_AREA
  36. def_bool PPC64
  37. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  38. def_bool PPC64
  39. config IRQ_PER_CPU
  40. bool
  41. default y
  42. config NR_IRQS
  43. int "Number of virtual interrupt numbers"
  44. range 32 32768
  45. default "512"
  46. help
  47. This defines the number of virtual interrupt numbers the kernel
  48. can manage. Virtual interrupt numbers are what you see in
  49. /proc/interrupts. If you configure your system to have too few,
  50. drivers will fail to load or worse - handle with care.
  51. config STACKTRACE_SUPPORT
  52. bool
  53. default y
  54. config HAVE_LATENCYTOP_SUPPORT
  55. def_bool y
  56. config TRACE_IRQFLAGS_SUPPORT
  57. bool
  58. default y
  59. config LOCKDEP_SUPPORT
  60. bool
  61. default y
  62. config RWSEM_GENERIC_SPINLOCK
  63. bool
  64. config RWSEM_XCHGADD_ALGORITHM
  65. bool
  66. default y
  67. config GENERIC_LOCKBREAK
  68. bool
  69. default y
  70. depends on SMP && PREEMPT
  71. config ARCH_HAS_ILOG2_U32
  72. bool
  73. default y
  74. config ARCH_HAS_ILOG2_U64
  75. bool
  76. default y if 64BIT
  77. config GENERIC_HWEIGHT
  78. bool
  79. default y
  80. config GENERIC_FIND_NEXT_BIT
  81. bool
  82. default y
  83. config GENERIC_GPIO
  84. bool
  85. help
  86. Generic GPIO API support
  87. config ARCH_NO_VIRT_TO_BUS
  88. def_bool PPC64
  89. config PPC
  90. bool
  91. default y
  92. select HAVE_FTRACE_MCOUNT_RECORD
  93. select HAVE_DYNAMIC_FTRACE
  94. select HAVE_FUNCTION_TRACER
  95. select HAVE_FUNCTION_GRAPH_TRACER
  96. select ARCH_WANT_OPTIONAL_GPIOLIB
  97. select HAVE_IDE
  98. select HAVE_IOREMAP_PROT
  99. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  100. select HAVE_KPROBES
  101. select HAVE_ARCH_KGDB
  102. select HAVE_KRETPROBES
  103. select HAVE_ARCH_TRACEHOOK
  104. select HAVE_LMB
  105. select HAVE_DMA_ATTRS
  106. select HAVE_DMA_API_DEBUG
  107. select USE_GENERIC_SMP_HELPERS if SMP
  108. select HAVE_OPROFILE
  109. select HAVE_SYSCALL_WRAPPERS if PPC64
  110. select GENERIC_ATOMIC64 if PPC32
  111. select HAVE_PERF_EVENTS
  112. config EARLY_PRINTK
  113. bool
  114. default y
  115. config COMPAT
  116. bool
  117. default y if PPC64
  118. select COMPAT_BINFMT_ELF
  119. config SYSVIPC_COMPAT
  120. bool
  121. depends on COMPAT && SYSVIPC
  122. default y
  123. # All PPC32s use generic nvram driver through ppc_md
  124. config GENERIC_NVRAM
  125. bool
  126. default y if PPC32
  127. config SCHED_OMIT_FRAME_POINTER
  128. bool
  129. default y
  130. config ARCH_MAY_HAVE_PC_FDC
  131. bool
  132. default !PPC_PSERIES || PCI
  133. config PPC_OF
  134. def_bool y
  135. config OF
  136. def_bool y
  137. select OF_FLATTREE
  138. config PPC_UDBG_16550
  139. bool
  140. default n
  141. config GENERIC_TBSYNC
  142. bool
  143. default y if PPC32 && SMP
  144. default n
  145. config AUDIT_ARCH
  146. bool
  147. default y
  148. config GENERIC_BUG
  149. bool
  150. default y
  151. depends on BUG
  152. config SYS_SUPPORTS_APM_EMULATION
  153. default y if PMAC_APM_EMU
  154. bool
  155. config DTC
  156. bool
  157. default y
  158. config DEFAULT_UIMAGE
  159. bool
  160. help
  161. Used to allow a board to specify it wants a uImage built by default
  162. default n
  163. config REDBOOT
  164. bool
  165. config ARCH_HIBERNATION_POSSIBLE
  166. bool
  167. default y
  168. config ARCH_SUSPEND_POSSIBLE
  169. def_bool y
  170. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  171. PPC_85xx || PPC_86xx
  172. config PPC_DCR_NATIVE
  173. bool
  174. default n
  175. config PPC_DCR_MMIO
  176. bool
  177. default n
  178. config PPC_DCR
  179. bool
  180. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  181. default y
  182. config PPC_OF_PLATFORM_PCI
  183. bool
  184. depends on PCI
  185. depends on PPC64 # not supported on 32 bits yet
  186. default n
  187. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  188. def_bool y
  189. config PPC_ADV_DEBUG_REGS
  190. bool
  191. depends on 40x || BOOKE
  192. default y
  193. config PPC_ADV_DEBUG_IACS
  194. int
  195. depends on PPC_ADV_DEBUG_REGS
  196. default 4 if 44x
  197. default 2
  198. config PPC_ADV_DEBUG_DACS
  199. int
  200. depends on PPC_ADV_DEBUG_REGS
  201. default 2
  202. config PPC_ADV_DEBUG_DVCS
  203. int
  204. depends on PPC_ADV_DEBUG_REGS
  205. default 2 if 44x
  206. default 0
  207. config PPC_ADV_DEBUG_DAC_RANGE
  208. bool
  209. depends on PPC_ADV_DEBUG_REGS && 44x
  210. default y
  211. source "init/Kconfig"
  212. source "kernel/Kconfig.freezer"
  213. source "arch/powerpc/sysdev/Kconfig"
  214. source "arch/powerpc/platforms/Kconfig"
  215. menu "Kernel options"
  216. config HIGHMEM
  217. bool "High memory support"
  218. depends on PPC32
  219. source kernel/time/Kconfig
  220. source kernel/Kconfig.hz
  221. source kernel/Kconfig.preempt
  222. source "fs/Kconfig.binfmt"
  223. config HUGETLB_PAGE_SIZE_VARIABLE
  224. bool
  225. depends on HUGETLB_PAGE
  226. default y
  227. config MATH_EMULATION
  228. bool "Math emulation"
  229. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  230. ---help---
  231. Some PowerPC chips designed for embedded applications do not have
  232. a floating-point unit and therefore do not implement the
  233. floating-point instructions in the PowerPC instruction set. If you
  234. say Y here, the kernel will include code to emulate a floating-point
  235. unit, which will allow programs that use floating-point
  236. instructions to run.
  237. config 8XX_MINIMAL_FPEMU
  238. bool "Minimal math emulation for 8xx"
  239. depends on 8xx && !MATH_EMULATION
  240. help
  241. Older arch/ppc kernels still emulated a few floating point
  242. instructions such as load and store, even when full math
  243. emulation is disabled. Say "Y" here if you want to preserve
  244. this behavior.
  245. It is recommended that you build a soft-float userspace instead.
  246. config IOMMU_HELPER
  247. def_bool PPC64
  248. config SWIOTLB
  249. bool "SWIOTLB support"
  250. default n
  251. select IOMMU_HELPER
  252. ---help---
  253. Support for IO bounce buffering for systems without an IOMMU.
  254. This allows us to DMA to the full physical address space on
  255. platforms where the size of a physical address is larger
  256. than the bus address. Not all platforms support this.
  257. config HOTPLUG_CPU
  258. bool "Support for enabling/disabling CPUs"
  259. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  260. ---help---
  261. Say Y here to be able to disable and re-enable individual
  262. CPUs at runtime on SMP machines.
  263. Say N if you are unsure.
  264. config ARCH_CPU_PROBE_RELEASE
  265. def_bool y
  266. depends on HOTPLUG_CPU
  267. config ARCH_ENABLE_MEMORY_HOTPLUG
  268. def_bool y
  269. config ARCH_HAS_WALK_MEMORY
  270. def_bool y
  271. config ARCH_ENABLE_MEMORY_HOTREMOVE
  272. def_bool y
  273. config KEXEC
  274. bool "kexec system call (EXPERIMENTAL)"
  275. depends on PPC_BOOK3S && EXPERIMENTAL
  276. help
  277. kexec is a system call that implements the ability to shutdown your
  278. current kernel, and to start another kernel. It is like a reboot
  279. but it is independent of the system firmware. And like a reboot
  280. you can start any kernel with it, not just Linux.
  281. The name comes from the similarity to the exec system call.
  282. It is an ongoing process to be certain the hardware in a machine
  283. is properly shutdown, so do not be surprised if this code does not
  284. initially work for you. It may help to enable device hotplugging
  285. support. As of this writing the exact hardware interface is
  286. strongly in flux, so no good recommendation can be made.
  287. config CRASH_DUMP
  288. bool "Build a kdump crash kernel"
  289. depends on PPC64 || 6xx
  290. select RELOCATABLE if PPC64
  291. help
  292. Build a kernel suitable for use as a kdump capture kernel.
  293. The same kernel binary can be used as production kernel and dump
  294. capture kernel.
  295. config PHYP_DUMP
  296. bool "Hypervisor-assisted dump (EXPERIMENTAL)"
  297. depends on PPC_PSERIES && EXPERIMENTAL
  298. help
  299. Hypervisor-assisted dump is meant to be a kdump replacement
  300. offering robustness and speed not possible without system
  301. hypervisor assistance.
  302. If unsure, say "N"
  303. config PPCBUG_NVRAM
  304. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  305. default y if PPC_PREP
  306. config IRQ_ALL_CPUS
  307. bool "Distribute interrupts on all CPUs by default"
  308. depends on SMP && !MV64360
  309. help
  310. This option gives the kernel permission to distribute IRQs across
  311. multiple CPUs. Saying N here will route all IRQs to the first
  312. CPU. Generally saying Y is safe, although some problems have been
  313. reported with SMP Power Macintoshes with this option enabled.
  314. config SPARSE_IRQ
  315. bool "Support sparse irq numbering"
  316. default y
  317. help
  318. This enables support for sparse irqs. This is useful for distro
  319. kernels that want to define a high CONFIG_NR_CPUS value but still
  320. want to have low kernel memory footprint on smaller machines.
  321. ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
  322. out the irq_desc[] array in a more NUMA-friendly way. )
  323. If you don't know what to do here, say Y.
  324. config NUMA
  325. bool "NUMA support"
  326. depends on PPC64
  327. default y if SMP && PPC_PSERIES
  328. config NODES_SHIFT
  329. int
  330. default "8" if PPC64
  331. default "4"
  332. depends on NEED_MULTIPLE_NODES
  333. config MAX_ACTIVE_REGIONS
  334. int
  335. default "256" if PPC64
  336. default "32"
  337. config ARCH_SELECT_MEMORY_MODEL
  338. def_bool y
  339. depends on PPC64
  340. config ARCH_FLATMEM_ENABLE
  341. def_bool y
  342. depends on (PPC64 && !NUMA) || PPC32
  343. config ARCH_SPARSEMEM_ENABLE
  344. def_bool y
  345. depends on PPC64
  346. select SPARSEMEM_VMEMMAP_ENABLE
  347. config ARCH_SPARSEMEM_DEFAULT
  348. def_bool y
  349. depends on (SMP && PPC_PSERIES) || PPC_PS3
  350. config ARCH_POPULATES_NODE_MAP
  351. def_bool y
  352. config SYS_SUPPORTS_HUGETLBFS
  353. def_bool y
  354. depends on PPC_BOOK3S_64
  355. source "mm/Kconfig"
  356. config ARCH_MEMORY_PROBE
  357. def_bool y
  358. depends on MEMORY_HOTPLUG
  359. # Some NUMA nodes have memory ranges that span
  360. # other nodes. Even though a pfn is valid and
  361. # between a node's start and end pfns, it may not
  362. # reside on that node. See memmap_init_zone()
  363. # for details.
  364. config NODES_SPAN_OTHER_NODES
  365. def_bool y
  366. depends on NEED_MULTIPLE_NODES
  367. config PPC_HAS_HASH_64K
  368. bool
  369. depends on PPC64
  370. default n
  371. config STDBINUTILS
  372. bool "Using standard binutils settings"
  373. depends on 44x
  374. default y
  375. help
  376. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  377. Note, that kernel will be able to run only those applications,
  378. which had been compiled using binutils later than 2.17.50.0.3 with
  379. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  380. the older binutils, you can patch them with a trivial patch, which
  381. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  382. choice
  383. prompt "Page size"
  384. default PPC_4K_PAGES
  385. help
  386. Select the kernel logical page size. Increasing the page size
  387. will reduce software overhead at each page boundary, allow
  388. hardware prefetch mechanisms to be more effective, and allow
  389. larger dma transfers increasing IO efficiency and reducing
  390. overhead. However the utilization of memory will increase.
  391. For example, each cached file will using a multiple of the
  392. page size to hold its contents and the difference between the
  393. end of file and the end of page is wasted.
  394. Some dedicated systems, such as software raid serving with
  395. accelerated calculations, have shown significant increases.
  396. If you configure a 64 bit kernel for 64k pages but the
  397. processor does not support them, then the kernel will simulate
  398. them with 4k pages, loading them on demand, but with the
  399. reduced software overhead and larger internal fragmentation.
  400. For the 32 bit kernel, a large page option will not be offered
  401. unless it is supported by the configured processor.
  402. If unsure, choose 4K_PAGES.
  403. config PPC_4K_PAGES
  404. bool "4k page size"
  405. config PPC_16K_PAGES
  406. bool "16k page size" if 44x
  407. config PPC_64K_PAGES
  408. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  409. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  410. config PPC_256K_PAGES
  411. bool "256k page size" if 44x
  412. depends on !STDBINUTILS
  413. help
  414. Make the page size 256k.
  415. As the ELF standard only requires alignment to support page
  416. sizes up to 64k, you will need to compile all of your user
  417. space applications with a non-standard binutils settings
  418. (see the STDBINUTILS description for details).
  419. Say N unless you know what you are doing.
  420. endchoice
  421. config FORCE_MAX_ZONEORDER
  422. int "Maximum zone order"
  423. range 9 64 if PPC64 && PPC_64K_PAGES
  424. default "9" if PPC64 && PPC_64K_PAGES
  425. range 13 64 if PPC64 && !PPC_64K_PAGES
  426. default "13" if PPC64 && !PPC_64K_PAGES
  427. range 9 64 if PPC32 && PPC_16K_PAGES
  428. default "9" if PPC32 && PPC_16K_PAGES
  429. range 7 64 if PPC32 && PPC_64K_PAGES
  430. default "7" if PPC32 && PPC_64K_PAGES
  431. range 5 64 if PPC32 && PPC_256K_PAGES
  432. default "5" if PPC32 && PPC_256K_PAGES
  433. range 11 64
  434. default "11"
  435. help
  436. The kernel memory allocator divides physically contiguous memory
  437. blocks into "zones", where each zone is a power of two number of
  438. pages. This option selects the largest power of two that the kernel
  439. keeps in the memory allocator. If you need to allocate very large
  440. blocks of physically contiguous memory, then you may need to
  441. increase this value.
  442. This config option is actually maximum order plus one. For example,
  443. a value of 11 means that the largest free memory block is 2^10 pages.
  444. The page size is not necessarily 4KB. For example, on 64-bit
  445. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  446. this in mind when choosing a value for this option.
  447. config PPC_SUBPAGE_PROT
  448. bool "Support setting protections for 4k subpages"
  449. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  450. help
  451. This option adds support for a system call to allow user programs
  452. to set access permissions (read/write, readonly, or no access)
  453. on the 4k subpages of each 64k page.
  454. config SCHED_SMT
  455. bool "SMT (Hyperthreading) scheduler support"
  456. depends on PPC64 && SMP
  457. help
  458. SMT scheduler support improves the CPU scheduler's decision making
  459. when dealing with POWER5 cpus at a cost of slightly increased
  460. overhead in some places. If unsure say N here.
  461. config PROC_DEVICETREE
  462. bool "Support for device tree in /proc"
  463. depends on PROC_FS
  464. help
  465. This option adds a device-tree directory under /proc which contains
  466. an image of the device tree that the kernel copies from Open
  467. Firmware or other boot firmware. If unsure, say Y here.
  468. config CMDLINE_BOOL
  469. bool "Default bootloader kernel arguments"
  470. config CMDLINE
  471. string "Initial kernel command string"
  472. depends on CMDLINE_BOOL
  473. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  474. help
  475. On some platforms, there is currently no way for the boot loader to
  476. pass arguments to the kernel. For these platforms, you can supply
  477. some command-line options at build time by entering them here. In
  478. most cases you will need to specify the root device here.
  479. config EXTRA_TARGETS
  480. string "Additional default image types"
  481. help
  482. List additional targets to be built by the bootwrapper here (separated
  483. by spaces). This is useful for targets that depend of device tree
  484. files in the .dts directory.
  485. Targets in this list will be build as part of the default build
  486. target, or when the user does a 'make zImage' or a
  487. 'make zImage.initrd'.
  488. If unsure, leave blank
  489. if !44x || BROKEN
  490. config ARCH_WANTS_FREEZER_CONTROL
  491. def_bool y
  492. depends on ADB_PMU
  493. source kernel/power/Kconfig
  494. endif
  495. config SECCOMP
  496. bool "Enable seccomp to safely compute untrusted bytecode"
  497. depends on PROC_FS
  498. default y
  499. help
  500. This kernel feature is useful for number crunching applications
  501. that may need to compute untrusted bytecode during their
  502. execution. By using pipes or other transports made available to
  503. the process as file descriptors supporting the read/write
  504. syscalls, it's possible to isolate those applications in
  505. their own address space using seccomp. Once seccomp is
  506. enabled via /proc/<pid>/seccomp, it cannot be disabled
  507. and the task is only allowed to execute a few safe syscalls
  508. defined by each seccomp mode.
  509. If unsure, say Y. Only embedded should say N here.
  510. endmenu
  511. config ISA_DMA_API
  512. bool
  513. default !PPC_ISERIES || PCI
  514. menu "Bus options"
  515. config ISA
  516. bool "Support for ISA-bus hardware"
  517. depends on PPC_PREP || PPC_CHRP
  518. select PPC_I8259
  519. help
  520. Find out whether you have ISA slots on your motherboard. ISA is the
  521. name of a bus system, i.e. the way the CPU talks to the other stuff
  522. inside your box. If you have an Apple machine, say N here; if you
  523. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  524. you have an embedded board, consult your board documentation.
  525. config ZONE_DMA
  526. bool
  527. default y
  528. config NEED_DMA_MAP_STATE
  529. def_bool (PPC64 || NOT_COHERENT_CACHE)
  530. config GENERIC_ISA_DMA
  531. bool
  532. depends on PPC64 || POWER4 || 6xx && !CPM2
  533. default y
  534. config PPC_INDIRECT_PCI
  535. bool
  536. depends on PCI
  537. default y if 40x || 44x
  538. default n
  539. config EISA
  540. bool
  541. config SBUS
  542. bool
  543. config FSL_SOC
  544. bool
  545. config FSL_PCI
  546. bool
  547. select PPC_INDIRECT_PCI
  548. select PCI_QUIRKS
  549. config FSL_PMC
  550. bool
  551. default y
  552. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  553. help
  554. Freescale MPC85xx/MPC86xx power management controller support
  555. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  556. config 4xx_SOC
  557. bool
  558. config FSL_LBC
  559. bool
  560. help
  561. Freescale Localbus support
  562. config FSL_GTM
  563. bool
  564. depends on PPC_83xx || QUICC_ENGINE || CPM2
  565. help
  566. Freescale General-purpose Timers support
  567. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  568. config MCA
  569. bool
  570. # Platforms that what PCI turned unconditionally just do select PCI
  571. # in their config node. Platforms that want to choose at config
  572. # time should select PPC_PCI_CHOICE
  573. config PPC_PCI_CHOICE
  574. bool
  575. config PCI
  576. bool "PCI support" if PPC_PCI_CHOICE
  577. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  578. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  579. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  580. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  581. select ARCH_SUPPORTS_MSI
  582. help
  583. Find out whether your system includes a PCI bus. PCI is the name of
  584. a bus system, i.e. the way the CPU talks to the other stuff inside
  585. your box. If you say Y here, the kernel will include drivers and
  586. infrastructure code to support PCI bus devices.
  587. config PCI_DOMAINS
  588. def_bool PCI
  589. config PCI_SYSCALL
  590. def_bool PCI
  591. config PCI_QSPAN
  592. bool "QSpan PCI"
  593. depends on !4xx && !CPM2 && 8xx
  594. select PPC_I8259
  595. help
  596. Say Y here if you have a system based on a Motorola 8xx-series
  597. embedded processor with a QSPAN PCI interface, otherwise say N.
  598. config PCI_8260
  599. bool
  600. depends on PCI && 8260
  601. select PPC_INDIRECT_PCI
  602. default y
  603. config 8260_PCI9
  604. bool "Enable workaround for MPC826x erratum PCI 9"
  605. depends on PCI_8260 && !8272
  606. default y
  607. choice
  608. prompt "IDMA channel for PCI 9 workaround"
  609. depends on 8260_PCI9
  610. config 8260_PCI9_IDMA1
  611. bool "IDMA1"
  612. config 8260_PCI9_IDMA2
  613. bool "IDMA2"
  614. config 8260_PCI9_IDMA3
  615. bool "IDMA3"
  616. config 8260_PCI9_IDMA4
  617. bool "IDMA4"
  618. endchoice
  619. source "drivers/pci/pcie/Kconfig"
  620. source "drivers/pci/Kconfig"
  621. source "drivers/pcmcia/Kconfig"
  622. source "drivers/pci/hotplug/Kconfig"
  623. config HAS_RAPIDIO
  624. bool
  625. default n
  626. config RAPIDIO
  627. bool "RapidIO support"
  628. depends on HAS_RAPIDIO
  629. help
  630. If you say Y here, the kernel will include drivers and
  631. infrastructure code to support RapidIO interconnect devices.
  632. source "drivers/rapidio/Kconfig"
  633. endmenu
  634. menu "Advanced setup"
  635. depends on PPC32
  636. config ADVANCED_OPTIONS
  637. bool "Prompt for advanced kernel configuration options"
  638. help
  639. This option will enable prompting for a variety of advanced kernel
  640. configuration options. These options can cause the kernel to not
  641. work if they are set incorrectly, but can be used to optimize certain
  642. aspects of kernel memory management.
  643. Unless you know what you are doing, say N here.
  644. comment "Default settings for advanced configuration options are used"
  645. depends on !ADVANCED_OPTIONS
  646. config LOWMEM_SIZE_BOOL
  647. bool "Set maximum low memory"
  648. depends on ADVANCED_OPTIONS
  649. help
  650. This option allows you to set the maximum amount of memory which
  651. will be used as "low memory", that is, memory which the kernel can
  652. access directly, without having to set up a kernel virtual mapping.
  653. This can be useful in optimizing the layout of kernel virtual
  654. memory.
  655. Say N here unless you know what you are doing.
  656. config LOWMEM_SIZE
  657. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  658. default "0x30000000"
  659. config LOWMEM_CAM_NUM_BOOL
  660. bool "Set number of CAMs to use to map low memory"
  661. depends on ADVANCED_OPTIONS && FSL_BOOKE
  662. help
  663. This option allows you to set the maximum number of CAM slots that
  664. will be used to map low memory. There are a limited number of slots
  665. available and even more limited number that will fit in the L1 MMU.
  666. However, using more entries will allow mapping more low memory. This
  667. can be useful in optimizing the layout of kernel virtual memory.
  668. Say N here unless you know what you are doing.
  669. config LOWMEM_CAM_NUM
  670. depends on FSL_BOOKE
  671. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  672. default 3
  673. config RELOCATABLE
  674. bool "Build a relocatable kernel (EXPERIMENTAL)"
  675. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  676. help
  677. This builds a kernel image that is capable of running at the
  678. location the kernel is loaded at (some alignment restrictions may
  679. exist).
  680. One use is for the kexec on panic case where the recovery kernel
  681. must live at a different physical address than the primary
  682. kernel.
  683. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  684. it has been loaded at and the compile time physical addresses
  685. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  686. setting can still be useful to bootwrappers that need to know the
  687. load location of the kernel (eg. u-boot/mkimage).
  688. config PAGE_OFFSET_BOOL
  689. bool "Set custom page offset address"
  690. depends on ADVANCED_OPTIONS
  691. help
  692. This option allows you to set the kernel virtual address at which
  693. the kernel will map low memory. This can be useful in optimizing
  694. the virtual memory layout of the system.
  695. Say N here unless you know what you are doing.
  696. config PAGE_OFFSET
  697. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  698. default "0xc0000000"
  699. config KERNEL_START_BOOL
  700. bool "Set custom kernel base address"
  701. depends on ADVANCED_OPTIONS
  702. help
  703. This option allows you to set the kernel virtual address at which
  704. the kernel will be loaded. Normally this should match PAGE_OFFSET
  705. however there are times (like kdump) that one might not want them
  706. to be the same.
  707. Say N here unless you know what you are doing.
  708. config KERNEL_START
  709. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  710. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  711. default "0xc2000000" if CRASH_DUMP
  712. default "0xc0000000"
  713. config PHYSICAL_START_BOOL
  714. bool "Set physical address where the kernel is loaded"
  715. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  716. help
  717. This gives the physical address where the kernel is loaded.
  718. Say N here unless you know what you are doing.
  719. config PHYSICAL_START
  720. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  721. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
  722. default "0x00000000"
  723. config PHYSICAL_ALIGN
  724. hex
  725. default "0x04000000" if FSL_BOOKE
  726. help
  727. This value puts the alignment restrictions on physical address
  728. where kernel is loaded and run from. Kernel is compiled for an
  729. address which meets above alignment restriction.
  730. config TASK_SIZE_BOOL
  731. bool "Set custom user task size"
  732. depends on ADVANCED_OPTIONS
  733. help
  734. This option allows you to set the amount of virtual address space
  735. allocated to user tasks. This can be useful in optimizing the
  736. virtual memory layout of the system.
  737. Say N here unless you know what you are doing.
  738. config TASK_SIZE
  739. hex "Size of user task space" if TASK_SIZE_BOOL
  740. default "0x80000000" if PPC_PREP || PPC_8xx
  741. default "0xc0000000"
  742. config CONSISTENT_SIZE_BOOL
  743. bool "Set custom consistent memory pool size"
  744. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  745. help
  746. This option allows you to set the size of the
  747. consistent memory pool. This pool of virtual memory
  748. is used to make consistent memory allocations.
  749. config CONSISTENT_SIZE
  750. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  751. default "0x00200000" if NOT_COHERENT_CACHE
  752. config PIN_TLB
  753. bool "Pinned Kernel TLBs (860 ONLY)"
  754. depends on ADVANCED_OPTIONS && 8xx
  755. endmenu
  756. if PPC64
  757. config RELOCATABLE
  758. bool "Build a relocatable kernel"
  759. help
  760. This builds a kernel image that is capable of running anywhere
  761. in the RMA (real memory area) at any 16k-aligned base address.
  762. The kernel is linked as a position-independent executable (PIE)
  763. and contains dynamic relocations which are processed early
  764. in the bootup process.
  765. One use is for the kexec on panic case where the recovery kernel
  766. must live at a different physical address than the primary
  767. kernel.
  768. config PAGE_OFFSET
  769. hex
  770. default "0xc000000000000000"
  771. config KERNEL_START
  772. hex
  773. default "0xc000000000000000"
  774. config PHYSICAL_START
  775. hex
  776. default "0x00000000"
  777. endif
  778. source "net/Kconfig"
  779. source "drivers/Kconfig"
  780. source "fs/Kconfig"
  781. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  782. source "lib/Kconfig"
  783. source "arch/powerpc/Kconfig.debug"
  784. source "security/Kconfig"
  785. config KEYS_COMPAT
  786. bool
  787. depends on COMPAT && KEYS
  788. default y
  789. source "crypto/Kconfig"
  790. config PPC_CLOCK
  791. bool
  792. default n
  793. select HAVE_CLK
  794. config PPC_LIB_RHEAP
  795. bool
  796. source "arch/powerpc/kvm/Kconfig"