Kconfig 25 KB

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  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 HAVE_SETUP_PER_CPU_AREA
  29. def_bool PPC64
  30. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  31. def_bool PPC64
  32. config NR_IRQS
  33. int "Number of virtual interrupt numbers"
  34. range 32 32768
  35. default "512"
  36. help
  37. This defines the number of virtual interrupt numbers the kernel
  38. can manage. Virtual interrupt numbers are what you see in
  39. /proc/interrupts. If you configure your system to have too few,
  40. drivers will fail to load or worse - handle with care.
  41. config STACKTRACE_SUPPORT
  42. bool
  43. default y
  44. config HAVE_LATENCYTOP_SUPPORT
  45. def_bool y
  46. config TRACE_IRQFLAGS_SUPPORT
  47. bool
  48. default y
  49. config LOCKDEP_SUPPORT
  50. bool
  51. default y
  52. config RWSEM_GENERIC_SPINLOCK
  53. bool
  54. config RWSEM_XCHGADD_ALGORITHM
  55. bool
  56. default y
  57. config GENERIC_LOCKBREAK
  58. bool
  59. default y
  60. depends on SMP && PREEMPT
  61. config ARCH_HAS_ILOG2_U32
  62. bool
  63. default y
  64. config ARCH_HAS_ILOG2_U64
  65. bool
  66. default y if 64BIT
  67. config GENERIC_HWEIGHT
  68. bool
  69. default y
  70. config GENERIC_FIND_NEXT_BIT
  71. bool
  72. default y
  73. config GENERIC_FIND_BIT_LE
  74. bool
  75. default y
  76. config GENERIC_GPIO
  77. bool
  78. help
  79. Generic GPIO API support
  80. config ARCH_NO_VIRT_TO_BUS
  81. def_bool PPC64
  82. config PPC
  83. bool
  84. default y
  85. select OF
  86. select OF_EARLY_FLATTREE
  87. select HAVE_FTRACE_MCOUNT_RECORD
  88. select HAVE_DYNAMIC_FTRACE
  89. select HAVE_FUNCTION_TRACER
  90. select HAVE_FUNCTION_GRAPH_TRACER
  91. select ARCH_WANT_OPTIONAL_GPIOLIB
  92. select HAVE_IDE
  93. select HAVE_IOREMAP_PROT
  94. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  95. select HAVE_KPROBES
  96. select HAVE_ARCH_KGDB
  97. select HAVE_KRETPROBES
  98. select HAVE_ARCH_TRACEHOOK
  99. select HAVE_MEMBLOCK
  100. select HAVE_DMA_ATTRS
  101. select HAVE_DMA_API_DEBUG
  102. select USE_GENERIC_SMP_HELPERS if SMP
  103. select HAVE_OPROFILE
  104. select HAVE_SYSCALL_WRAPPERS if PPC64
  105. select GENERIC_ATOMIC64 if PPC32
  106. select HAVE_IRQ_WORK
  107. select HAVE_PERF_EVENTS
  108. select HAVE_REGS_AND_STACK_ACCESS_API
  109. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  110. select HAVE_GENERIC_HARDIRQS
  111. select HAVE_SPARSE_IRQ
  112. select IRQ_PER_CPU
  113. select GENERIC_IRQ_SHOW
  114. select GENERIC_IRQ_SHOW_LEVEL
  115. select HAVE_RCU_TABLE_FREE if SMP
  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 EPAPR_BOOT
  157. bool
  158. help
  159. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  160. default n
  161. config DEFAULT_UIMAGE
  162. bool
  163. help
  164. Used to allow a board to specify it wants a uImage built by default
  165. default n
  166. config REDBOOT
  167. bool
  168. config ARCH_HIBERNATION_POSSIBLE
  169. bool
  170. default y
  171. config ARCH_SUSPEND_POSSIBLE
  172. def_bool y
  173. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  174. (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
  175. config PPC_DCR_NATIVE
  176. bool
  177. default n
  178. config PPC_DCR_MMIO
  179. bool
  180. default n
  181. config PPC_DCR
  182. bool
  183. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  184. default y
  185. config PPC_OF_PLATFORM_PCI
  186. bool
  187. depends on PCI
  188. depends on PPC64 # not supported on 32 bits yet
  189. default n
  190. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  191. def_bool y
  192. config PPC_ADV_DEBUG_REGS
  193. bool
  194. depends on 40x || BOOKE
  195. default y
  196. config PPC_ADV_DEBUG_IACS
  197. int
  198. depends on PPC_ADV_DEBUG_REGS
  199. default 4 if 44x
  200. default 2
  201. config PPC_ADV_DEBUG_DACS
  202. int
  203. depends on PPC_ADV_DEBUG_REGS
  204. default 2
  205. config PPC_ADV_DEBUG_DVCS
  206. int
  207. depends on PPC_ADV_DEBUG_REGS
  208. default 2 if 44x
  209. default 0
  210. config PPC_ADV_DEBUG_DAC_RANGE
  211. bool
  212. depends on PPC_ADV_DEBUG_REGS && 44x
  213. default y
  214. source "init/Kconfig"
  215. source "kernel/Kconfig.freezer"
  216. source "arch/powerpc/sysdev/Kconfig"
  217. source "arch/powerpc/platforms/Kconfig"
  218. menu "Kernel options"
  219. config HIGHMEM
  220. bool "High memory support"
  221. depends on PPC32
  222. source kernel/time/Kconfig
  223. source kernel/Kconfig.hz
  224. source kernel/Kconfig.preempt
  225. source "fs/Kconfig.binfmt"
  226. config HUGETLB_PAGE_SIZE_VARIABLE
  227. bool
  228. depends on HUGETLB_PAGE
  229. default y
  230. config MATH_EMULATION
  231. bool "Math emulation"
  232. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  233. ---help---
  234. Some PowerPC chips designed for embedded applications do not have
  235. a floating-point unit and therefore do not implement the
  236. floating-point instructions in the PowerPC instruction set. If you
  237. say Y here, the kernel will include code to emulate a floating-point
  238. unit, which will allow programs that use floating-point
  239. instructions to run.
  240. config 8XX_MINIMAL_FPEMU
  241. bool "Minimal math emulation for 8xx"
  242. depends on 8xx && !MATH_EMULATION
  243. help
  244. Older arch/ppc kernels still emulated a few floating point
  245. instructions such as load and store, even when full math
  246. emulation is disabled. Say "Y" here if you want to preserve
  247. this behavior.
  248. It is recommended that you build a soft-float userspace instead.
  249. config IOMMU_HELPER
  250. def_bool PPC64
  251. config SWIOTLB
  252. bool "SWIOTLB support"
  253. default n
  254. select IOMMU_HELPER
  255. ---help---
  256. Support for IO bounce buffering for systems without an IOMMU.
  257. This allows us to DMA to the full physical address space on
  258. platforms where the size of a physical address is larger
  259. than the bus address. Not all platforms support this.
  260. config HOTPLUG_CPU
  261. bool "Support for enabling/disabling CPUs"
  262. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  263. ---help---
  264. Say Y here to be able to disable and re-enable individual
  265. CPUs at runtime on SMP machines.
  266. Say N if you are unsure.
  267. config ARCH_CPU_PROBE_RELEASE
  268. def_bool y
  269. depends on HOTPLUG_CPU
  270. config ARCH_ENABLE_MEMORY_HOTPLUG
  271. def_bool y
  272. config ARCH_HAS_WALK_MEMORY
  273. def_bool y
  274. config ARCH_ENABLE_MEMORY_HOTREMOVE
  275. def_bool y
  276. config KEXEC
  277. bool "kexec system call (EXPERIMENTAL)"
  278. depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL
  279. help
  280. kexec is a system call that implements the ability to shutdown your
  281. current kernel, and to start another kernel. It is like a reboot
  282. but it is independent of the system firmware. And like a reboot
  283. you can start any kernel with it, not just Linux.
  284. The name comes from the similarity to the exec system call.
  285. It is an ongoing process to be certain the hardware in a machine
  286. is properly shutdown, so do not be surprised if this code does not
  287. initially work for you. It may help to enable device hotplugging
  288. support. As of this writing the exact hardware interface is
  289. strongly in flux, so no good recommendation can be made.
  290. config CRASH_DUMP
  291. bool "Build a kdump crash kernel"
  292. depends on PPC64 || 6xx || FSL_BOOKE
  293. select RELOCATABLE if PPC64 || FSL_BOOKE
  294. help
  295. Build a kernel suitable for use as a kdump capture kernel.
  296. The same kernel binary can be used as production kernel and dump
  297. capture kernel.
  298. config PHYP_DUMP
  299. bool "Hypervisor-assisted dump (EXPERIMENTAL)"
  300. depends on PPC_PSERIES && EXPERIMENTAL
  301. help
  302. Hypervisor-assisted dump is meant to be a kdump replacement
  303. offering robustness and speed not possible without system
  304. hypervisor assistance.
  305. If unsure, say "N"
  306. config PPCBUG_NVRAM
  307. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  308. default y if PPC_PREP
  309. config IRQ_ALL_CPUS
  310. bool "Distribute interrupts on all CPUs by default"
  311. depends on SMP && !MV64360
  312. help
  313. This option gives the kernel permission to distribute IRQs across
  314. multiple CPUs. Saying N here will route all IRQs to the first
  315. CPU. Generally saying Y is safe, although some problems have been
  316. reported with SMP Power Macintoshes with this option enabled.
  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. config ARCH_WANTS_FREEZER_CONTROL
  476. def_bool y
  477. depends on ADB_PMU
  478. source kernel/power/Kconfig
  479. config SECCOMP
  480. bool "Enable seccomp to safely compute untrusted bytecode"
  481. depends on PROC_FS
  482. default y
  483. help
  484. This kernel feature is useful for number crunching applications
  485. that may need to compute untrusted bytecode during their
  486. execution. By using pipes or other transports made available to
  487. the process as file descriptors supporting the read/write
  488. syscalls, it's possible to isolate those applications in
  489. their own address space using seccomp. Once seccomp is
  490. enabled via /proc/<pid>/seccomp, it cannot be disabled
  491. and the task is only allowed to execute a few safe syscalls
  492. defined by each seccomp mode.
  493. If unsure, say Y. Only embedded should say N here.
  494. endmenu
  495. config ISA_DMA_API
  496. bool
  497. default !PPC_ISERIES || PCI
  498. menu "Bus options"
  499. config ISA
  500. bool "Support for ISA-bus hardware"
  501. depends on PPC_PREP || PPC_CHRP
  502. select PPC_I8259
  503. help
  504. Find out whether you have ISA slots on your motherboard. ISA is the
  505. name of a bus system, i.e. the way the CPU talks to the other stuff
  506. inside your box. If you have an Apple machine, say N here; if you
  507. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  508. you have an embedded board, consult your board documentation.
  509. config ZONE_DMA
  510. bool
  511. default y
  512. config NEED_DMA_MAP_STATE
  513. def_bool (PPC64 || NOT_COHERENT_CACHE)
  514. config NEED_SG_DMA_LENGTH
  515. def_bool y
  516. config GENERIC_ISA_DMA
  517. bool
  518. depends on ISA_DMA_API
  519. default y
  520. config PPC_INDIRECT_PCI
  521. bool
  522. depends on PCI
  523. default y if 40x || 44x
  524. default n
  525. config EISA
  526. bool
  527. config SBUS
  528. bool
  529. config FSL_SOC
  530. bool
  531. config FSL_PCI
  532. bool
  533. select PPC_INDIRECT_PCI
  534. select PCI_QUIRKS
  535. config FSL_PMC
  536. bool
  537. default y
  538. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  539. help
  540. Freescale MPC85xx/MPC86xx power management controller support
  541. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  542. config PPC4xx_CPM
  543. bool
  544. default y
  545. depends on SUSPEND && (44x || 40x)
  546. help
  547. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  548. It also enables support for two different idle states (idle-wait
  549. and idle-doze).
  550. config 4xx_SOC
  551. bool
  552. config FSL_LBC
  553. bool "Freescale Local Bus support"
  554. depends on FSL_SOC
  555. help
  556. Enables reporting of errors from the Freescale local bus
  557. controller. Also contains some common code used by
  558. drivers for specific local bus peripherals.
  559. config FSL_GTM
  560. bool
  561. depends on PPC_83xx || QUICC_ENGINE || CPM2
  562. help
  563. Freescale General-purpose Timers support
  564. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  565. config MCA
  566. bool
  567. # Platforms that what PCI turned unconditionally just do select PCI
  568. # in their config node. Platforms that want to choose at config
  569. # time should select PPC_PCI_CHOICE
  570. config PPC_PCI_CHOICE
  571. bool
  572. config PCI
  573. bool "PCI support" if PPC_PCI_CHOICE
  574. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  575. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  576. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  577. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  578. select ARCH_SUPPORTS_MSI
  579. help
  580. Find out whether your system includes a PCI bus. PCI is the name of
  581. a bus system, i.e. the way the CPU talks to the other stuff inside
  582. your box. If you say Y here, the kernel will include drivers and
  583. infrastructure code to support PCI bus devices.
  584. config PCI_DOMAINS
  585. def_bool PCI
  586. config PCI_SYSCALL
  587. def_bool PCI
  588. config PCI_QSPAN
  589. bool "QSpan PCI"
  590. depends on !4xx && !CPM2 && 8xx
  591. select PPC_I8259
  592. help
  593. Say Y here if you have a system based on a Motorola 8xx-series
  594. embedded processor with a QSPAN PCI interface, otherwise say N.
  595. config PCI_8260
  596. bool
  597. depends on PCI && 8260
  598. select PPC_INDIRECT_PCI
  599. default y
  600. config 8260_PCI9
  601. bool "Enable workaround for MPC826x erratum PCI 9"
  602. depends on PCI_8260 && !8272
  603. default y
  604. choice
  605. prompt "IDMA channel for PCI 9 workaround"
  606. depends on 8260_PCI9
  607. config 8260_PCI9_IDMA1
  608. bool "IDMA1"
  609. config 8260_PCI9_IDMA2
  610. bool "IDMA2"
  611. config 8260_PCI9_IDMA3
  612. bool "IDMA3"
  613. config 8260_PCI9_IDMA4
  614. bool "IDMA4"
  615. endchoice
  616. source "drivers/pci/pcie/Kconfig"
  617. source "drivers/pci/Kconfig"
  618. source "drivers/pcmcia/Kconfig"
  619. source "drivers/pci/hotplug/Kconfig"
  620. config HAS_RAPIDIO
  621. bool
  622. default n
  623. config RAPIDIO
  624. bool "RapidIO support"
  625. depends on HAS_RAPIDIO || PCI
  626. help
  627. If you say Y here, the kernel will include drivers and
  628. infrastructure code to support RapidIO interconnect devices.
  629. config FSL_RIO
  630. bool "Freescale Embedded SRIO Controller support"
  631. depends on RAPIDIO && HAS_RAPIDIO
  632. default "n"
  633. ---help---
  634. Include support for RapidIO controller on Freescale embedded
  635. processors (MPC8548, MPC8641, etc).
  636. source "drivers/rapidio/Kconfig"
  637. endmenu
  638. menu "Advanced setup"
  639. depends on PPC32
  640. config ADVANCED_OPTIONS
  641. bool "Prompt for advanced kernel configuration options"
  642. help
  643. This option will enable prompting for a variety of advanced kernel
  644. configuration options. These options can cause the kernel to not
  645. work if they are set incorrectly, but can be used to optimize certain
  646. aspects of kernel memory management.
  647. Unless you know what you are doing, say N here.
  648. comment "Default settings for advanced configuration options are used"
  649. depends on !ADVANCED_OPTIONS
  650. config LOWMEM_SIZE_BOOL
  651. bool "Set maximum low memory"
  652. depends on ADVANCED_OPTIONS
  653. help
  654. This option allows you to set the maximum amount of memory which
  655. will be used as "low memory", that is, memory which the kernel can
  656. access directly, without having to set up a kernel virtual mapping.
  657. This can be useful in optimizing the layout of kernel virtual
  658. memory.
  659. Say N here unless you know what you are doing.
  660. config LOWMEM_SIZE
  661. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  662. default "0x30000000"
  663. config LOWMEM_CAM_NUM_BOOL
  664. bool "Set number of CAMs to use to map low memory"
  665. depends on ADVANCED_OPTIONS && FSL_BOOKE
  666. help
  667. This option allows you to set the maximum number of CAM slots that
  668. will be used to map low memory. There are a limited number of slots
  669. available and even more limited number that will fit in the L1 MMU.
  670. However, using more entries will allow mapping more low memory. This
  671. can be useful in optimizing the layout of kernel virtual memory.
  672. Say N here unless you know what you are doing.
  673. config LOWMEM_CAM_NUM
  674. depends on FSL_BOOKE
  675. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  676. default 3
  677. config RELOCATABLE
  678. bool "Build a relocatable kernel (EXPERIMENTAL)"
  679. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  680. help
  681. This builds a kernel image that is capable of running at the
  682. location the kernel is loaded at (some alignment restrictions may
  683. exist).
  684. One use is for the kexec on panic case where the recovery kernel
  685. must live at a different physical address than the primary
  686. kernel.
  687. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  688. it has been loaded at and the compile time physical addresses
  689. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  690. setting can still be useful to bootwrappers that need to know the
  691. load location of the kernel (eg. u-boot/mkimage).
  692. config PAGE_OFFSET_BOOL
  693. bool "Set custom page offset address"
  694. depends on ADVANCED_OPTIONS
  695. help
  696. This option allows you to set the kernel virtual address at which
  697. the kernel will map low memory. This can be useful in optimizing
  698. the virtual memory layout of the system.
  699. Say N here unless you know what you are doing.
  700. config PAGE_OFFSET
  701. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  702. default "0xc0000000"
  703. config KERNEL_START_BOOL
  704. bool "Set custom kernel base address"
  705. depends on ADVANCED_OPTIONS
  706. help
  707. This option allows you to set the kernel virtual address at which
  708. the kernel will be loaded. Normally this should match PAGE_OFFSET
  709. however there are times (like kdump) that one might not want them
  710. to be the same.
  711. Say N here unless you know what you are doing.
  712. config KERNEL_START
  713. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  714. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  715. default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
  716. default "0xc0000000"
  717. config PHYSICAL_START_BOOL
  718. bool "Set physical address where the kernel is loaded"
  719. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  720. help
  721. This gives the physical address where the kernel is loaded.
  722. Say N here unless you know what you are doing.
  723. config PHYSICAL_START
  724. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  725. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
  726. default "0x00000000"
  727. config PHYSICAL_ALIGN
  728. hex
  729. default "0x04000000" if FSL_BOOKE
  730. help
  731. This value puts the alignment restrictions on physical address
  732. where kernel is loaded and run from. Kernel is compiled for an
  733. address which meets above alignment restriction.
  734. config TASK_SIZE_BOOL
  735. bool "Set custom user task size"
  736. depends on ADVANCED_OPTIONS
  737. help
  738. This option allows you to set the amount of virtual address space
  739. allocated to user tasks. This can be useful in optimizing the
  740. virtual memory layout of the system.
  741. Say N here unless you know what you are doing.
  742. config TASK_SIZE
  743. hex "Size of user task space" if TASK_SIZE_BOOL
  744. default "0x80000000" if PPC_PREP || PPC_8xx
  745. default "0xc0000000"
  746. config CONSISTENT_SIZE_BOOL
  747. bool "Set custom consistent memory pool size"
  748. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  749. help
  750. This option allows you to set the size of the
  751. consistent memory pool. This pool of virtual memory
  752. is used to make consistent memory allocations.
  753. config CONSISTENT_SIZE
  754. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  755. default "0x00200000" if NOT_COHERENT_CACHE
  756. config PIN_TLB
  757. bool "Pinned Kernel TLBs (860 ONLY)"
  758. depends on ADVANCED_OPTIONS && 8xx
  759. endmenu
  760. if PPC64
  761. config RELOCATABLE
  762. bool "Build a relocatable kernel"
  763. help
  764. This builds a kernel image that is capable of running anywhere
  765. in the RMA (real memory area) at any 16k-aligned base address.
  766. The kernel is linked as a position-independent executable (PIE)
  767. and contains dynamic relocations which are processed early
  768. in the bootup process.
  769. One use is for the kexec on panic case where the recovery kernel
  770. must live at a different physical address than the primary
  771. kernel.
  772. config PAGE_OFFSET
  773. hex
  774. default "0xc000000000000000"
  775. config KERNEL_START
  776. hex
  777. default "0xc000000000000000"
  778. config PHYSICAL_START
  779. hex
  780. default "0x00000000"
  781. endif
  782. source "net/Kconfig"
  783. source "drivers/Kconfig"
  784. source "fs/Kconfig"
  785. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  786. source "lib/Kconfig"
  787. source "arch/powerpc/Kconfig.debug"
  788. source "security/Kconfig"
  789. config KEYS_COMPAT
  790. bool
  791. depends on COMPAT && KEYS
  792. default y
  793. source "crypto/Kconfig"
  794. config PPC_CLOCK
  795. bool
  796. default n
  797. select HAVE_CLK
  798. config PPC_LIB_RHEAP
  799. bool
  800. source "arch/powerpc/kvm/Kconfig"