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_GPIO
  71. bool
  72. help
  73. Generic GPIO API support
  74. config ARCH_NO_VIRT_TO_BUS
  75. def_bool PPC64
  76. config PPC
  77. bool
  78. default y
  79. select OF
  80. select OF_EARLY_FLATTREE
  81. select HAVE_FTRACE_MCOUNT_RECORD
  82. select HAVE_DYNAMIC_FTRACE
  83. select HAVE_FUNCTION_TRACER
  84. select HAVE_FUNCTION_GRAPH_TRACER
  85. select ARCH_WANT_OPTIONAL_GPIOLIB
  86. select HAVE_IDE
  87. select HAVE_IOREMAP_PROT
  88. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  89. select HAVE_KPROBES
  90. select HAVE_ARCH_KGDB
  91. select HAVE_KRETPROBES
  92. select HAVE_ARCH_TRACEHOOK
  93. select HAVE_MEMBLOCK
  94. select HAVE_DMA_ATTRS
  95. select HAVE_DMA_API_DEBUG
  96. select USE_GENERIC_SMP_HELPERS if SMP
  97. select HAVE_OPROFILE
  98. select HAVE_SYSCALL_WRAPPERS if PPC64
  99. select GENERIC_ATOMIC64 if PPC32
  100. select HAVE_IRQ_WORK
  101. select HAVE_PERF_EVENTS
  102. select HAVE_REGS_AND_STACK_ACCESS_API
  103. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  104. select HAVE_GENERIC_HARDIRQS
  105. select HAVE_SPARSE_IRQ
  106. select IRQ_PER_CPU
  107. select GENERIC_IRQ_SHOW
  108. select GENERIC_IRQ_SHOW_LEVEL
  109. select HAVE_RCU_TABLE_FREE if SMP
  110. select HAVE_SYSCALL_TRACEPOINTS
  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 EPAPR_BOOT
  152. bool
  153. help
  154. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  155. default n
  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 && !SMP) || 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 NUMA
  313. bool "NUMA support"
  314. depends on PPC64
  315. default y if SMP && PPC_PSERIES
  316. config NODES_SHIFT
  317. int
  318. default "8" if PPC64
  319. default "4"
  320. depends on NEED_MULTIPLE_NODES
  321. config MAX_ACTIVE_REGIONS
  322. int
  323. default "256" if PPC64
  324. default "32"
  325. config ARCH_SELECT_MEMORY_MODEL
  326. def_bool y
  327. depends on PPC64
  328. config ARCH_FLATMEM_ENABLE
  329. def_bool y
  330. depends on (PPC64 && !NUMA) || PPC32
  331. config ARCH_SPARSEMEM_ENABLE
  332. def_bool y
  333. depends on PPC64
  334. select SPARSEMEM_VMEMMAP_ENABLE
  335. config ARCH_SPARSEMEM_DEFAULT
  336. def_bool y
  337. depends on (SMP && PPC_PSERIES) || PPC_PS3
  338. config ARCH_POPULATES_NODE_MAP
  339. def_bool y
  340. config SYS_SUPPORTS_HUGETLBFS
  341. def_bool y
  342. depends on PPC_BOOK3S_64
  343. source "mm/Kconfig"
  344. config ARCH_MEMORY_PROBE
  345. def_bool y
  346. depends on MEMORY_HOTPLUG
  347. # Some NUMA nodes have memory ranges that span
  348. # other nodes. Even though a pfn is valid and
  349. # between a node's start and end pfns, it may not
  350. # reside on that node. See memmap_init_zone()
  351. # for details.
  352. config NODES_SPAN_OTHER_NODES
  353. def_bool y
  354. depends on NEED_MULTIPLE_NODES
  355. config PPC_HAS_HASH_64K
  356. bool
  357. depends on PPC64
  358. default n
  359. config STDBINUTILS
  360. bool "Using standard binutils settings"
  361. depends on 44x
  362. default y
  363. help
  364. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  365. Note, that kernel will be able to run only those applications,
  366. which had been compiled using binutils later than 2.17.50.0.3 with
  367. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  368. the older binutils, you can patch them with a trivial patch, which
  369. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  370. choice
  371. prompt "Page size"
  372. default PPC_4K_PAGES
  373. help
  374. Select the kernel logical page size. Increasing the page size
  375. will reduce software overhead at each page boundary, allow
  376. hardware prefetch mechanisms to be more effective, and allow
  377. larger dma transfers increasing IO efficiency and reducing
  378. overhead. However the utilization of memory will increase.
  379. For example, each cached file will using a multiple of the
  380. page size to hold its contents and the difference between the
  381. end of file and the end of page is wasted.
  382. Some dedicated systems, such as software raid serving with
  383. accelerated calculations, have shown significant increases.
  384. If you configure a 64 bit kernel for 64k pages but the
  385. processor does not support them, then the kernel will simulate
  386. them with 4k pages, loading them on demand, but with the
  387. reduced software overhead and larger internal fragmentation.
  388. For the 32 bit kernel, a large page option will not be offered
  389. unless it is supported by the configured processor.
  390. If unsure, choose 4K_PAGES.
  391. config PPC_4K_PAGES
  392. bool "4k page size"
  393. config PPC_16K_PAGES
  394. bool "16k page size" if 44x
  395. config PPC_64K_PAGES
  396. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  397. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  398. config PPC_256K_PAGES
  399. bool "256k page size" if 44x
  400. depends on !STDBINUTILS
  401. help
  402. Make the page size 256k.
  403. As the ELF standard only requires alignment to support page
  404. sizes up to 64k, you will need to compile all of your user
  405. space applications with a non-standard binutils settings
  406. (see the STDBINUTILS description for details).
  407. Say N unless you know what you are doing.
  408. endchoice
  409. config FORCE_MAX_ZONEORDER
  410. int "Maximum zone order"
  411. range 9 64 if PPC64 && PPC_64K_PAGES
  412. default "9" if PPC64 && PPC_64K_PAGES
  413. range 13 64 if PPC64 && !PPC_64K_PAGES
  414. default "13" if PPC64 && !PPC_64K_PAGES
  415. range 9 64 if PPC32 && PPC_16K_PAGES
  416. default "9" if PPC32 && PPC_16K_PAGES
  417. range 7 64 if PPC32 && PPC_64K_PAGES
  418. default "7" if PPC32 && PPC_64K_PAGES
  419. range 5 64 if PPC32 && PPC_256K_PAGES
  420. default "5" if PPC32 && PPC_256K_PAGES
  421. range 11 64
  422. default "11"
  423. help
  424. The kernel memory allocator divides physically contiguous memory
  425. blocks into "zones", where each zone is a power of two number of
  426. pages. This option selects the largest power of two that the kernel
  427. keeps in the memory allocator. If you need to allocate very large
  428. blocks of physically contiguous memory, then you may need to
  429. increase this value.
  430. This config option is actually maximum order plus one. For example,
  431. a value of 11 means that the largest free memory block is 2^10 pages.
  432. The page size is not necessarily 4KB. For example, on 64-bit
  433. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  434. this in mind when choosing a value for this option.
  435. config PPC_SUBPAGE_PROT
  436. bool "Support setting protections for 4k subpages"
  437. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  438. help
  439. This option adds support for a system call to allow user programs
  440. to set access permissions (read/write, readonly, or no access)
  441. on the 4k subpages of each 64k page.
  442. config SCHED_SMT
  443. bool "SMT (Hyperthreading) scheduler support"
  444. depends on PPC64 && SMP
  445. help
  446. SMT scheduler support improves the CPU scheduler's decision making
  447. when dealing with POWER5 cpus at a cost of slightly increased
  448. overhead in some places. If unsure say N here.
  449. config CMDLINE_BOOL
  450. bool "Default bootloader kernel arguments"
  451. config CMDLINE
  452. string "Initial kernel command string"
  453. depends on CMDLINE_BOOL
  454. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  455. help
  456. On some platforms, there is currently no way for the boot loader to
  457. pass arguments to the kernel. For these platforms, you can supply
  458. some command-line options at build time by entering them here. In
  459. most cases you will need to specify the root device here.
  460. config EXTRA_TARGETS
  461. string "Additional default image types"
  462. help
  463. List additional targets to be built by the bootwrapper here (separated
  464. by spaces). This is useful for targets that depend of device tree
  465. files in the .dts directory.
  466. Targets in this list will be build as part of the default build
  467. target, or when the user does a 'make zImage' or a
  468. 'make zImage.initrd'.
  469. If unsure, leave blank
  470. config ARCH_WANTS_FREEZER_CONTROL
  471. def_bool y
  472. depends on ADB_PMU
  473. source kernel/power/Kconfig
  474. config SECCOMP
  475. bool "Enable seccomp to safely compute untrusted bytecode"
  476. depends on PROC_FS
  477. default y
  478. help
  479. This kernel feature is useful for number crunching applications
  480. that may need to compute untrusted bytecode during their
  481. execution. By using pipes or other transports made available to
  482. the process as file descriptors supporting the read/write
  483. syscalls, it's possible to isolate those applications in
  484. their own address space using seccomp. Once seccomp is
  485. enabled via /proc/<pid>/seccomp, it cannot be disabled
  486. and the task is only allowed to execute a few safe syscalls
  487. defined by each seccomp mode.
  488. If unsure, say Y. Only embedded should say N here.
  489. endmenu
  490. config ISA_DMA_API
  491. bool
  492. default !PPC_ISERIES || PCI
  493. menu "Bus options"
  494. config ISA
  495. bool "Support for ISA-bus hardware"
  496. depends on PPC_PREP || PPC_CHRP
  497. select PPC_I8259
  498. help
  499. Find out whether you have ISA slots on your motherboard. ISA is the
  500. name of a bus system, i.e. the way the CPU talks to the other stuff
  501. inside your box. If you have an Apple machine, say N here; if you
  502. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  503. you have an embedded board, consult your board documentation.
  504. config ZONE_DMA
  505. bool
  506. default y
  507. config NEED_DMA_MAP_STATE
  508. def_bool (PPC64 || NOT_COHERENT_CACHE)
  509. config NEED_SG_DMA_LENGTH
  510. def_bool y
  511. config GENERIC_ISA_DMA
  512. bool
  513. depends on ISA_DMA_API
  514. default y
  515. config PPC_INDIRECT_PCI
  516. bool
  517. depends on PCI
  518. default y if 40x || 44x
  519. default n
  520. config EISA
  521. bool
  522. config SBUS
  523. bool
  524. config FSL_SOC
  525. bool
  526. config FSL_PCI
  527. bool
  528. select PPC_INDIRECT_PCI
  529. select PCI_QUIRKS
  530. config FSL_PMC
  531. bool
  532. default y
  533. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  534. help
  535. Freescale MPC85xx/MPC86xx power management controller support
  536. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  537. config PPC4xx_CPM
  538. bool
  539. default y
  540. depends on SUSPEND && (44x || 40x)
  541. help
  542. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  543. It also enables support for two different idle states (idle-wait
  544. and idle-doze).
  545. config 4xx_SOC
  546. bool
  547. config FSL_LBC
  548. bool "Freescale Local Bus support"
  549. depends on FSL_SOC
  550. help
  551. Enables reporting of errors from the Freescale local bus
  552. controller. Also contains some common code used by
  553. drivers for specific local bus peripherals.
  554. config FSL_GTM
  555. bool
  556. depends on PPC_83xx || QUICC_ENGINE || CPM2
  557. help
  558. Freescale General-purpose Timers support
  559. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  560. config MCA
  561. bool
  562. # Platforms that what PCI turned unconditionally just do select PCI
  563. # in their config node. Platforms that want to choose at config
  564. # time should select PPC_PCI_CHOICE
  565. config PPC_PCI_CHOICE
  566. bool
  567. config PCI
  568. bool "PCI support" if PPC_PCI_CHOICE
  569. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  570. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  571. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  572. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  573. select ARCH_SUPPORTS_MSI
  574. help
  575. Find out whether your system includes a PCI bus. PCI is the name of
  576. a bus system, i.e. the way the CPU talks to the other stuff inside
  577. your box. If you say Y here, the kernel will include drivers and
  578. infrastructure code to support PCI bus devices.
  579. config PCI_DOMAINS
  580. def_bool PCI
  581. config PCI_SYSCALL
  582. def_bool PCI
  583. config PCI_QSPAN
  584. bool "QSpan PCI"
  585. depends on !4xx && !CPM2 && 8xx
  586. select PPC_I8259
  587. help
  588. Say Y here if you have a system based on a Motorola 8xx-series
  589. embedded processor with a QSPAN PCI interface, otherwise say N.
  590. config PCI_8260
  591. bool
  592. depends on PCI && 8260
  593. select PPC_INDIRECT_PCI
  594. default y
  595. config 8260_PCI9
  596. bool "Enable workaround for MPC826x erratum PCI 9"
  597. depends on PCI_8260 && !8272
  598. default y
  599. choice
  600. prompt "IDMA channel for PCI 9 workaround"
  601. depends on 8260_PCI9
  602. config 8260_PCI9_IDMA1
  603. bool "IDMA1"
  604. config 8260_PCI9_IDMA2
  605. bool "IDMA2"
  606. config 8260_PCI9_IDMA3
  607. bool "IDMA3"
  608. config 8260_PCI9_IDMA4
  609. bool "IDMA4"
  610. endchoice
  611. source "drivers/pci/pcie/Kconfig"
  612. source "drivers/pci/Kconfig"
  613. source "drivers/pcmcia/Kconfig"
  614. source "drivers/pci/hotplug/Kconfig"
  615. config HAS_RAPIDIO
  616. bool
  617. default n
  618. config RAPIDIO
  619. bool "RapidIO support"
  620. depends on HAS_RAPIDIO || PCI
  621. help
  622. If you say Y here, the kernel will include drivers and
  623. infrastructure code to support RapidIO interconnect devices.
  624. config FSL_RIO
  625. bool "Freescale Embedded SRIO Controller support"
  626. depends on RAPIDIO && HAS_RAPIDIO
  627. default "n"
  628. ---help---
  629. Include support for RapidIO controller on Freescale embedded
  630. processors (MPC8548, MPC8641, etc).
  631. source "drivers/rapidio/Kconfig"
  632. endmenu
  633. menu "Advanced setup"
  634. depends on PPC32
  635. config ADVANCED_OPTIONS
  636. bool "Prompt for advanced kernel configuration options"
  637. help
  638. This option will enable prompting for a variety of advanced kernel
  639. configuration options. These options can cause the kernel to not
  640. work if they are set incorrectly, but can be used to optimize certain
  641. aspects of kernel memory management.
  642. Unless you know what you are doing, say N here.
  643. comment "Default settings for advanced configuration options are used"
  644. depends on !ADVANCED_OPTIONS
  645. config LOWMEM_SIZE_BOOL
  646. bool "Set maximum low memory"
  647. depends on ADVANCED_OPTIONS
  648. help
  649. This option allows you to set the maximum amount of memory which
  650. will be used as "low memory", that is, memory which the kernel can
  651. access directly, without having to set up a kernel virtual mapping.
  652. This can be useful in optimizing the layout of kernel virtual
  653. memory.
  654. Say N here unless you know what you are doing.
  655. config LOWMEM_SIZE
  656. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  657. default "0x30000000"
  658. config LOWMEM_CAM_NUM_BOOL
  659. bool "Set number of CAMs to use to map low memory"
  660. depends on ADVANCED_OPTIONS && FSL_BOOKE
  661. help
  662. This option allows you to set the maximum number of CAM slots that
  663. will be used to map low memory. There are a limited number of slots
  664. available and even more limited number that will fit in the L1 MMU.
  665. However, using more entries will allow mapping more low memory. This
  666. can be useful in optimizing the layout of kernel virtual memory.
  667. Say N here unless you know what you are doing.
  668. config LOWMEM_CAM_NUM
  669. depends on FSL_BOOKE
  670. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  671. default 3
  672. config RELOCATABLE
  673. bool "Build a relocatable kernel (EXPERIMENTAL)"
  674. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  675. help
  676. This builds a kernel image that is capable of running at the
  677. location the kernel is loaded at (some alignment restrictions may
  678. exist).
  679. One use is for the kexec on panic case where the recovery kernel
  680. must live at a different physical address than the primary
  681. kernel.
  682. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  683. it has been loaded at and the compile time physical addresses
  684. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  685. setting can still be useful to bootwrappers that need to know the
  686. load location of the kernel (eg. u-boot/mkimage).
  687. config PAGE_OFFSET_BOOL
  688. bool "Set custom page offset address"
  689. depends on ADVANCED_OPTIONS
  690. help
  691. This option allows you to set the kernel virtual address at which
  692. the kernel will map low memory. This can be useful in optimizing
  693. the virtual memory layout of the system.
  694. Say N here unless you know what you are doing.
  695. config PAGE_OFFSET
  696. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  697. default "0xc0000000"
  698. config KERNEL_START_BOOL
  699. bool "Set custom kernel base address"
  700. depends on ADVANCED_OPTIONS
  701. help
  702. This option allows you to set the kernel virtual address at which
  703. the kernel will be loaded. Normally this should match PAGE_OFFSET
  704. however there are times (like kdump) that one might not want them
  705. to be the same.
  706. Say N here unless you know what you are doing.
  707. config KERNEL_START
  708. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  709. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  710. default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
  711. default "0xc0000000"
  712. config PHYSICAL_START_BOOL
  713. bool "Set physical address where the kernel is loaded"
  714. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  715. help
  716. This gives the physical address where the kernel is loaded.
  717. Say N here unless you know what you are doing.
  718. config PHYSICAL_START
  719. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  720. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
  721. default "0x00000000"
  722. config PHYSICAL_ALIGN
  723. hex
  724. default "0x04000000" if FSL_BOOKE
  725. help
  726. This value puts the alignment restrictions on physical address
  727. where kernel is loaded and run from. Kernel is compiled for an
  728. address which meets above alignment restriction.
  729. config TASK_SIZE_BOOL
  730. bool "Set custom user task size"
  731. depends on ADVANCED_OPTIONS
  732. help
  733. This option allows you to set the amount of virtual address space
  734. allocated to user tasks. This can be useful in optimizing the
  735. virtual memory layout of the system.
  736. Say N here unless you know what you are doing.
  737. config TASK_SIZE
  738. hex "Size of user task space" if TASK_SIZE_BOOL
  739. default "0x80000000" if PPC_PREP || PPC_8xx
  740. default "0xc0000000"
  741. config CONSISTENT_SIZE_BOOL
  742. bool "Set custom consistent memory pool size"
  743. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  744. help
  745. This option allows you to set the size of the
  746. consistent memory pool. This pool of virtual memory
  747. is used to make consistent memory allocations.
  748. config CONSISTENT_SIZE
  749. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  750. default "0x00200000" if NOT_COHERENT_CACHE
  751. config PIN_TLB
  752. bool "Pinned Kernel TLBs (860 ONLY)"
  753. depends on ADVANCED_OPTIONS && 8xx
  754. endmenu
  755. if PPC64
  756. config RELOCATABLE
  757. bool "Build a relocatable kernel"
  758. help
  759. This builds a kernel image that is capable of running anywhere
  760. in the RMA (real memory area) at any 16k-aligned base address.
  761. The kernel is linked as a position-independent executable (PIE)
  762. and contains dynamic relocations which are processed early
  763. in the bootup process.
  764. One use is for the kexec on panic case where the recovery kernel
  765. must live at a different physical address than the primary
  766. kernel.
  767. config PAGE_OFFSET
  768. hex
  769. default "0xc000000000000000"
  770. config KERNEL_START
  771. hex
  772. default "0xc000000000000000"
  773. config PHYSICAL_START
  774. hex
  775. default "0x00000000"
  776. endif
  777. source "net/Kconfig"
  778. source "drivers/Kconfig"
  779. source "fs/Kconfig"
  780. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  781. source "lib/Kconfig"
  782. source "arch/powerpc/Kconfig.debug"
  783. source "security/Kconfig"
  784. config KEYS_COMPAT
  785. bool
  786. depends on COMPAT && KEYS
  787. default y
  788. source "crypto/Kconfig"
  789. config PPC_CLOCK
  790. bool
  791. default n
  792. select HAVE_CLK
  793. config PPC_LIB_RHEAP
  794. bool
  795. source "arch/powerpc/kvm/Kconfig"