Kconfig 24 KB

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