Kconfig 22 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. config PPC64
  6. bool "64-bit kernel"
  7. default n
  8. help
  9. This option selects whether a 32-bit or a 64-bit kernel
  10. will be built.
  11. config PPC_PM_NEEDS_RTC_LIB
  12. bool
  13. select RTC_LIB
  14. default y if PM
  15. config PPC32
  16. bool
  17. default y if !PPC64
  18. config 64BIT
  19. bool
  20. default y if PPC64
  21. config PPC_MERGE
  22. def_bool y
  23. config MMU
  24. bool
  25. default y
  26. config GENERIC_HARDIRQS
  27. bool
  28. default y
  29. config IRQ_PER_CPU
  30. bool
  31. default y
  32. config RWSEM_GENERIC_SPINLOCK
  33. bool
  34. config RWSEM_XCHGADD_ALGORITHM
  35. bool
  36. default y
  37. config ARCH_HAS_ILOG2_U32
  38. bool
  39. default y
  40. config ARCH_HAS_ILOG2_U64
  41. bool
  42. default y if 64BIT
  43. config GENERIC_HWEIGHT
  44. bool
  45. default y
  46. config GENERIC_CALIBRATE_DELAY
  47. bool
  48. default y
  49. config GENERIC_FIND_NEXT_BIT
  50. bool
  51. default y
  52. config PPC
  53. bool
  54. default y
  55. config EARLY_PRINTK
  56. bool
  57. default y
  58. config COMPAT
  59. bool
  60. default y if PPC64
  61. config SYSVIPC_COMPAT
  62. bool
  63. depends on COMPAT && SYSVIPC
  64. default y
  65. # All PPC32s use generic nvram driver through ppc_md
  66. config GENERIC_NVRAM
  67. bool
  68. default y if PPC32
  69. config SCHED_NO_NO_OMIT_FRAME_POINTER
  70. bool
  71. default y
  72. config ARCH_MAY_HAVE_PC_FDC
  73. bool
  74. default !PPC_PSERIES || PCI
  75. config PPC_OF
  76. def_bool y
  77. config PPC_UDBG_16550
  78. bool
  79. default n
  80. config GENERIC_TBSYNC
  81. bool
  82. default y if PPC32 && SMP
  83. default n
  84. config AUDIT_ARCH
  85. bool
  86. default y
  87. config GENERIC_BUG
  88. bool
  89. default y
  90. depends on BUG
  91. config SYS_SUPPORTS_APM_EMULATION
  92. bool
  93. #
  94. # Powerpc uses the slab allocator to manage its ptes and the
  95. # page structs of ptes are used for splitting the page table
  96. # lock for configurations supporting more than SPLIT_PTLOCK_CPUS.
  97. #
  98. # In that special configuration the page structs of slabs are modified.
  99. # This setting disables the selection of SLUB as a slab allocator.
  100. #
  101. config ARCH_USES_SLAB_PAGE_STRUCT
  102. bool
  103. default y
  104. depends on SPLIT_PTLOCK_CPUS <= NR_CPUS
  105. config DEFAULT_UIMAGE
  106. bool
  107. help
  108. Used to allow a board to specify it wants a uImage built by default
  109. default n
  110. config PPC64_SWSUSP
  111. bool
  112. depends on PPC64 && (BROKEN || (PPC_PMAC64 && EXPERIMENTAL))
  113. default y
  114. menu "Processor support"
  115. choice
  116. prompt "Processor Type"
  117. depends on PPC32
  118. default 6xx
  119. config CLASSIC32
  120. bool "52xx/6xx/7xx/74xx"
  121. select PPC_FPU
  122. select 6xx
  123. help
  124. There are four families of PowerPC chips supported. The more common
  125. types (601, 603, 604, 740, 750, 7400), the Motorola embedded
  126. versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
  127. embedded versions (403 and 405) and the high end 64 bit Power
  128. processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
  129. This option is the catch-all for 6xx types, including some of the
  130. embedded versions. Unless there is see an option for the specific
  131. chip family you are using, you want this option.
  132. You do not want this if you are building a kernel for a 64 bit
  133. IBM RS/6000 or an Apple G5, choose 6xx.
  134. If unsure, select this option
  135. Note that the kernel runs in 32-bit mode even on 64-bit chips.
  136. config PPC_82xx
  137. bool "Freescale 82xx"
  138. select 6xx
  139. select PPC_FPU
  140. config PPC_83xx
  141. bool "Freescale 83xx"
  142. select 6xx
  143. select FSL_SOC
  144. select 83xx
  145. select PPC_FPU
  146. select WANT_DEVICE_TREE
  147. config PPC_85xx
  148. bool "Freescale 85xx"
  149. select E500
  150. select FSL_SOC
  151. select 85xx
  152. select WANT_DEVICE_TREE
  153. config PPC_86xx
  154. bool "Freescale 86xx"
  155. select 6xx
  156. select FSL_SOC
  157. select FSL_PCIE
  158. select PPC_FPU
  159. select ALTIVEC
  160. help
  161. The Freescale E600 SoCs have 74xx cores.
  162. config PPC_8xx
  163. bool "Freescale 8xx"
  164. select FSL_SOC
  165. select 8xx
  166. config 40x
  167. bool "AMCC 40x"
  168. select PPC_DCR_NATIVE
  169. config 44x
  170. bool "AMCC 44x"
  171. select PPC_DCR_NATIVE
  172. config E200
  173. bool "Freescale e200"
  174. endchoice
  175. config POWER4_ONLY
  176. bool "Optimize for POWER4"
  177. depends on PPC64
  178. default n
  179. ---help---
  180. Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  181. The resulting binary will not work on POWER3 or RS64 processors
  182. when compiled with binutils 2.15 or later.
  183. config POWER3
  184. bool
  185. depends on PPC64
  186. default y if !POWER4_ONLY
  187. config POWER4
  188. depends on PPC64
  189. def_bool y
  190. config 6xx
  191. bool
  192. # this is temp to handle compat with arch=ppc
  193. config 8xx
  194. bool
  195. # this is temp to handle compat with arch=ppc
  196. config 83xx
  197. bool
  198. # this is temp to handle compat with arch=ppc
  199. config 85xx
  200. bool
  201. config E500
  202. bool
  203. config PPC_FPU
  204. bool
  205. default y if PPC64
  206. config PPC_DCR_NATIVE
  207. bool
  208. default n
  209. config PPC_DCR_MMIO
  210. bool
  211. default n
  212. config PPC_DCR
  213. bool
  214. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  215. default y
  216. config PPC_OF_PLATFORM_PCI
  217. bool
  218. depends on PPC64 # not supported on 32 bits yet
  219. default n
  220. config BOOKE
  221. bool
  222. depends on E200 || E500
  223. default y
  224. config FSL_BOOKE
  225. bool
  226. depends on E200 || E500
  227. default y
  228. config PTE_64BIT
  229. bool
  230. depends on 44x || E500
  231. default y if 44x
  232. default y if E500 && PHYS_64BIT
  233. config PHYS_64BIT
  234. bool 'Large physical address support' if E500
  235. depends on 44x || E500
  236. select RESOURCES_64BIT
  237. default y if 44x
  238. ---help---
  239. This option enables kernel support for larger than 32-bit physical
  240. addresses. This features is not be available on all e500 cores.
  241. If in doubt, say N here.
  242. config ALTIVEC
  243. bool "AltiVec Support"
  244. depends on CLASSIC32 || POWER4
  245. ---help---
  246. This option enables kernel support for the Altivec extensions to the
  247. PowerPC processor. The kernel currently supports saving and restoring
  248. altivec registers, and turning on the 'altivec enable' bit so user
  249. processes can execute altivec instructions.
  250. This option is only usefully if you have a processor that supports
  251. altivec (G4, otherwise known as 74xx series), but does not have
  252. any affect on a non-altivec cpu (it does, however add code to the
  253. kernel).
  254. If in doubt, say Y here.
  255. config SPE
  256. bool "SPE Support"
  257. depends on E200 || E500
  258. default y
  259. ---help---
  260. This option enables kernel support for the Signal Processing
  261. Extensions (SPE) to the PowerPC processor. The kernel currently
  262. supports saving and restoring SPE registers, and turning on the
  263. 'spe enable' bit so user processes can execute SPE instructions.
  264. This option is only useful if you have a processor that supports
  265. SPE (e500, otherwise known as 85xx series), but does not have any
  266. effect on a non-spe cpu (it does, however add code to the kernel).
  267. If in doubt, say Y here.
  268. config PPC_STD_MMU
  269. bool
  270. depends on 6xx || POWER3 || POWER4 || PPC64
  271. default y
  272. config PPC_STD_MMU_32
  273. def_bool y
  274. depends on PPC_STD_MMU && PPC32
  275. config VIRT_CPU_ACCOUNTING
  276. bool "Deterministic task and CPU time accounting"
  277. depends on PPC64
  278. default y
  279. help
  280. Select this option to enable more accurate task and CPU time
  281. accounting. This is done by reading a CPU counter on each
  282. kernel entry and exit and on transitions within the kernel
  283. between system, softirq and hardirq state, so there is a
  284. small performance impact. This also enables accounting of
  285. stolen time on logically-partitioned systems running on
  286. IBM POWER5-based machines.
  287. If in doubt, say Y here.
  288. config SMP
  289. depends on PPC_STD_MMU
  290. bool "Symmetric multi-processing support"
  291. ---help---
  292. This enables support for systems with more than one CPU. If you have
  293. a system with only one CPU, say N. If you have a system with more
  294. than one CPU, say Y. Note that the kernel does not currently
  295. support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
  296. since they have inadequate hardware support for multiprocessor
  297. operation.
  298. If you say N here, the kernel will run on single and multiprocessor
  299. machines, but will use only one CPU of a multiprocessor machine. If
  300. you say Y here, the kernel will run on single-processor machines.
  301. On a single-processor machine, the kernel will run faster if you say
  302. N here.
  303. If you don't know what to do here, say N.
  304. config NR_CPUS
  305. int "Maximum number of CPUs (2-128)"
  306. range 2 128
  307. depends on SMP
  308. default "32" if PPC64
  309. default "4"
  310. config NOT_COHERENT_CACHE
  311. bool
  312. depends on 4xx || 8xx || E200
  313. default y
  314. endmenu
  315. source "init/Kconfig"
  316. source "arch/powerpc/platforms/Kconfig"
  317. menu "Kernel options"
  318. config HIGHMEM
  319. bool "High memory support"
  320. depends on PPC32
  321. source kernel/Kconfig.hz
  322. source kernel/Kconfig.preempt
  323. source "fs/Kconfig.binfmt"
  324. # We optimistically allocate largepages from the VM, so make the limit
  325. # large enough (16MB). This badly named config option is actually
  326. # max order + 1
  327. config FORCE_MAX_ZONEORDER
  328. int
  329. depends on PPC64
  330. default "9" if PPC_64K_PAGES
  331. default "13"
  332. config MATH_EMULATION
  333. bool "Math emulation"
  334. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  335. ---help---
  336. Some PowerPC chips designed for embedded applications do not have
  337. a floating-point unit and therefore do not implement the
  338. floating-point instructions in the PowerPC instruction set. If you
  339. say Y here, the kernel will include code to emulate a floating-point
  340. unit, which will allow programs that use floating-point
  341. instructions to run.
  342. config IOMMU_VMERGE
  343. bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
  344. depends on EXPERIMENTAL && PPC64
  345. default n
  346. help
  347. Cause IO segments sent to a device for DMA to be merged virtually
  348. by the IOMMU when they happen to have been allocated contiguously.
  349. This doesn't add pressure to the IOMMU allocator. However, some
  350. drivers don't support getting large merged segments coming back
  351. from *_map_sg(). Say Y if you know the drivers you are using are
  352. properly handling this case.
  353. config HOTPLUG_CPU
  354. bool "Support for enabling/disabling CPUs"
  355. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  356. ---help---
  357. Say Y here to be able to disable and re-enable individual
  358. CPUs at runtime on SMP machines.
  359. Say N if you are unsure.
  360. config ARCH_ENABLE_MEMORY_HOTPLUG
  361. def_bool y
  362. config KEXEC
  363. bool "kexec system call (EXPERIMENTAL)"
  364. depends on PPC_MULTIPLATFORM && EXPERIMENTAL
  365. help
  366. kexec is a system call that implements the ability to shutdown your
  367. current kernel, and to start another kernel. It is like a reboot
  368. but it is independent of the system firmware. And like a reboot
  369. you can start any kernel with it, not just Linux.
  370. The name comes from the similarity to the exec system call.
  371. It is an ongoing process to be certain the hardware in a machine
  372. is properly shutdown, so do not be surprised if this code does not
  373. initially work for you. It may help to enable device hotplugging
  374. support. As of this writing the exact hardware interface is
  375. strongly in flux, so no good recommendation can be made.
  376. config CRASH_DUMP
  377. bool "Build a kdump crash kernel (EXPERIMENTAL)"
  378. depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
  379. help
  380. Build a kernel suitable for use as a kdump capture kernel.
  381. The kernel will be linked at a different address than normal, and
  382. so can only be used for Kdump.
  383. Don't change this unless you know what you are doing.
  384. config PPCBUG_NVRAM
  385. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  386. default y if PPC_PREP
  387. config IRQ_ALL_CPUS
  388. bool "Distribute interrupts on all CPUs by default"
  389. depends on SMP && !MV64360
  390. help
  391. This option gives the kernel permission to distribute IRQs across
  392. multiple CPUs. Saying N here will route all IRQs to the first
  393. CPU. Generally saying Y is safe, although some problems have been
  394. reported with SMP Power Macintoshes with this option enabled.
  395. config NUMA
  396. bool "NUMA support"
  397. depends on PPC64
  398. default y if SMP && PPC_PSERIES
  399. config NODES_SHIFT
  400. int
  401. default "4"
  402. depends on NEED_MULTIPLE_NODES
  403. config ARCH_SELECT_MEMORY_MODEL
  404. def_bool y
  405. depends on PPC64
  406. config ARCH_FLATMEM_ENABLE
  407. def_bool y
  408. depends on (PPC64 && !NUMA) || PPC32
  409. config ARCH_SPARSEMEM_ENABLE
  410. def_bool y
  411. depends on PPC64
  412. config ARCH_SPARSEMEM_DEFAULT
  413. def_bool y
  414. depends on (SMP && PPC_PSERIES) || PPC_PS3
  415. config ARCH_POPULATES_NODE_MAP
  416. def_bool y
  417. source "mm/Kconfig"
  418. config ARCH_MEMORY_PROBE
  419. def_bool y
  420. depends on MEMORY_HOTPLUG
  421. # Some NUMA nodes have memory ranges that span
  422. # other nodes. Even though a pfn is valid and
  423. # between a node's start and end pfns, it may not
  424. # reside on that node. See memmap_init_zone()
  425. # for details.
  426. config NODES_SPAN_OTHER_NODES
  427. def_bool y
  428. depends on NEED_MULTIPLE_NODES
  429. config PPC_64K_PAGES
  430. bool "64k page size"
  431. depends on PPC64
  432. help
  433. This option changes the kernel logical page size to 64k. On machines
  434. without processor support for 64k pages, the kernel will simulate
  435. them by loading each individual 4k page on demand transparently,
  436. while on hardware with such support, it will be used to map
  437. normal application pages.
  438. config SCHED_SMT
  439. bool "SMT (Hyperthreading) scheduler support"
  440. depends on PPC64 && SMP
  441. help
  442. SMT scheduler support improves the CPU scheduler's decision making
  443. when dealing with POWER5 cpus at a cost of slightly increased
  444. overhead in some places. If unsure say N here.
  445. config PROC_DEVICETREE
  446. bool "Support for device tree in /proc"
  447. depends on PROC_FS
  448. help
  449. This option adds a device-tree directory under /proc which contains
  450. an image of the device tree that the kernel copies from Open
  451. Firmware or other boot firmware. If unsure, say Y here.
  452. config CMDLINE_BOOL
  453. bool "Default bootloader kernel arguments"
  454. config CMDLINE
  455. string "Initial kernel command string"
  456. depends on CMDLINE_BOOL
  457. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  458. help
  459. On some platforms, there is currently no way for the boot loader to
  460. pass arguments to the kernel. For these platforms, you can supply
  461. some command-line options at build time by entering them here. In
  462. most cases you will need to specify the root device here.
  463. if !44x || BROKEN
  464. source kernel/power/Kconfig
  465. endif
  466. config SECCOMP
  467. bool "Enable seccomp to safely compute untrusted bytecode"
  468. depends on PROC_FS
  469. default y
  470. help
  471. This kernel feature is useful for number crunching applications
  472. that may need to compute untrusted bytecode during their
  473. execution. By using pipes or other transports made available to
  474. the process as file descriptors supporting the read/write
  475. syscalls, it's possible to isolate those applications in
  476. their own address space using seccomp. Once seccomp is
  477. enabled via /proc/<pid>/seccomp, it cannot be disabled
  478. and the task is only allowed to execute a few safe syscalls
  479. defined by each seccomp mode.
  480. If unsure, say Y. Only embedded should say N here.
  481. config WANT_DEVICE_TREE
  482. bool
  483. default n
  484. config DEVICE_TREE
  485. string "Static device tree source file"
  486. depends on WANT_DEVICE_TREE
  487. help
  488. This specifies the device tree source (.dts) file to be
  489. compiled and included when building the bootwrapper. If a
  490. relative filename is given, then it will be relative to
  491. arch/powerpc/boot/dts. If you are not using the bootwrapper,
  492. or do not need to build a dts into the bootwrapper, this
  493. field is ignored.
  494. For example, this is required when building a cuImage target
  495. for an older U-Boot, which cannot pass a device tree itself.
  496. Such a kernel will not work with a newer U-Boot that tries to
  497. pass a device tree (unless you tell it not to). If your U-Boot
  498. does not mention a device tree in "help bootm", then use the
  499. cuImage target and specify a device tree here. Otherwise, use
  500. the uImage target and leave this field blank.
  501. endmenu
  502. config ISA_DMA_API
  503. bool
  504. default y
  505. menu "Bus options"
  506. config ISA
  507. bool "Support for ISA-bus hardware"
  508. depends on PPC_PREP || PPC_CHRP
  509. select PPC_I8259
  510. help
  511. Find out whether you have ISA slots on your motherboard. ISA is the
  512. name of a bus system, i.e. the way the CPU talks to the other stuff
  513. inside your box. If you have an Apple machine, say N here; if you
  514. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  515. you have an embedded board, consult your board documentation.
  516. config ZONE_DMA
  517. bool
  518. default y
  519. config GENERIC_ISA_DMA
  520. bool
  521. depends on PPC64 || POWER4 || 6xx && !CPM2
  522. default y
  523. config PPC_INDIRECT_PCI
  524. bool
  525. depends on PCI
  526. default y if 40x || 44x
  527. default n
  528. config PPC_INDIRECT_PCI_BE
  529. bool
  530. depends PPC_INDIRECT_PCI
  531. default n
  532. config EISA
  533. bool
  534. config SBUS
  535. bool
  536. config FSL_SOC
  537. bool
  538. config FSL_PCIE
  539. bool
  540. depends on PPC_86xx
  541. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  542. config MCA
  543. bool
  544. config PCI
  545. bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
  546. || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
  547. || MPC7448HPC2 || PPC_PS3 || PPC_HOLLY
  548. default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
  549. && !PPC_85xx && !PPC_86xx
  550. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
  551. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  552. select ARCH_SUPPORTS_MSI
  553. help
  554. Find out whether your system includes a PCI bus. PCI is the name of
  555. a bus system, i.e. the way the CPU talks to the other stuff inside
  556. your box. If you say Y here, the kernel will include drivers and
  557. infrastructure code to support PCI bus devices.
  558. config PCI_DOMAINS
  559. bool
  560. default PCI
  561. config PCI_QSPAN
  562. bool "QSpan PCI"
  563. depends on !4xx && !CPM2 && 8xx
  564. select PPC_I8259
  565. help
  566. Say Y here if you have a system based on a Motorola 8xx-series
  567. embedded processor with a QSPAN PCI interface, otherwise say N.
  568. config PCI_8260
  569. bool
  570. depends on PCI && 8260
  571. select PPC_INDIRECT_PCI
  572. default y
  573. config 8260_PCI9
  574. bool "Enable workaround for MPC826x erratum PCI 9"
  575. depends on PCI_8260 && !ADS8272
  576. default y
  577. choice
  578. prompt "IDMA channel for PCI 9 workaround"
  579. depends on 8260_PCI9
  580. config 8260_PCI9_IDMA1
  581. bool "IDMA1"
  582. config 8260_PCI9_IDMA2
  583. bool "IDMA2"
  584. config 8260_PCI9_IDMA3
  585. bool "IDMA3"
  586. config 8260_PCI9_IDMA4
  587. bool "IDMA4"
  588. endchoice
  589. source "drivers/pci/pcie/Kconfig"
  590. source "drivers/pci/Kconfig"
  591. source "drivers/pcmcia/Kconfig"
  592. source "drivers/pci/hotplug/Kconfig"
  593. endmenu
  594. menu "Advanced setup"
  595. depends on PPC32
  596. config ADVANCED_OPTIONS
  597. bool "Prompt for advanced kernel configuration options"
  598. help
  599. This option will enable prompting for a variety of advanced kernel
  600. configuration options. These options can cause the kernel to not
  601. work if they are set incorrectly, but can be used to optimize certain
  602. aspects of kernel memory management.
  603. Unless you know what you are doing, say N here.
  604. comment "Default settings for advanced configuration options are used"
  605. depends on !ADVANCED_OPTIONS
  606. config HIGHMEM_START_BOOL
  607. bool "Set high memory pool address"
  608. depends on ADVANCED_OPTIONS && HIGHMEM
  609. help
  610. This option allows you to set the base address of the kernel virtual
  611. area used to map high memory pages. This can be useful in
  612. optimizing the layout of kernel virtual memory.
  613. Say N here unless you know what you are doing.
  614. config HIGHMEM_START
  615. hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
  616. default "0xfe000000"
  617. config LOWMEM_SIZE_BOOL
  618. bool "Set maximum low memory"
  619. depends on ADVANCED_OPTIONS
  620. help
  621. This option allows you to set the maximum amount of memory which
  622. will be used as "low memory", that is, memory which the kernel can
  623. access directly, without having to set up a kernel virtual mapping.
  624. This can be useful in optimizing the layout of kernel virtual
  625. memory.
  626. Say N here unless you know what you are doing.
  627. config LOWMEM_SIZE
  628. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  629. default "0x30000000"
  630. config KERNEL_START_BOOL
  631. bool "Set custom kernel base address"
  632. depends on ADVANCED_OPTIONS
  633. help
  634. This option allows you to set the kernel virtual address at which
  635. the kernel will map low memory (the kernel image will be linked at
  636. this address). This can be useful in optimizing the virtual memory
  637. layout of the system.
  638. Say N here unless you know what you are doing.
  639. config KERNEL_START
  640. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  641. default "0xc0000000"
  642. config TASK_SIZE_BOOL
  643. bool "Set custom user task size"
  644. depends on ADVANCED_OPTIONS
  645. help
  646. This option allows you to set the amount of virtual address space
  647. allocated to user tasks. This can be useful in optimizing the
  648. virtual memory layout of the system.
  649. Say N here unless you know what you are doing.
  650. config TASK_SIZE
  651. hex "Size of user task space" if TASK_SIZE_BOOL
  652. default "0x80000000"
  653. config CONSISTENT_START_BOOL
  654. bool "Set custom consistent memory pool address"
  655. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  656. help
  657. This option allows you to set the base virtual address
  658. of the consistent memory pool. This pool of virtual
  659. memory is used to make consistent memory allocations.
  660. config CONSISTENT_START
  661. hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
  662. default "0xff100000" if NOT_COHERENT_CACHE
  663. config CONSISTENT_SIZE_BOOL
  664. bool "Set custom consistent memory pool size"
  665. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  666. help
  667. This option allows you to set the size of the
  668. consistent memory pool. This pool of virtual memory
  669. is used to make consistent memory allocations.
  670. config CONSISTENT_SIZE
  671. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  672. default "0x00200000" if NOT_COHERENT_CACHE
  673. config BOOT_LOAD_BOOL
  674. bool "Set the boot link/load address"
  675. depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
  676. help
  677. This option allows you to set the initial load address of the zImage
  678. or zImage.initrd file. This can be useful if you are on a board
  679. which has a small amount of memory.
  680. Say N here unless you know what you are doing.
  681. config BOOT_LOAD
  682. hex "Link/load address for booting" if BOOT_LOAD_BOOL
  683. default "0x00400000" if 40x || 8xx || 8260
  684. default "0x01000000" if 44x
  685. default "0x00800000"
  686. config PIN_TLB
  687. bool "Pinned Kernel TLBs (860 ONLY)"
  688. depends on ADVANCED_OPTIONS && 8xx
  689. endmenu
  690. if PPC64
  691. config KERNEL_START
  692. hex
  693. default "0xc000000000000000"
  694. endif
  695. source "net/Kconfig"
  696. source "drivers/Kconfig"
  697. source "fs/Kconfig"
  698. # XXX source "arch/ppc/8xx_io/Kconfig"
  699. # XXX source "arch/ppc/8260_io/Kconfig"
  700. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  701. source "lib/Kconfig"
  702. menu "Instrumentation Support"
  703. depends on EXPERIMENTAL
  704. source "arch/powerpc/oprofile/Kconfig"
  705. config KPROBES
  706. bool "Kprobes (EXPERIMENTAL)"
  707. depends on !BOOKE && !4xx && KALLSYMS && EXPERIMENTAL && MODULES
  708. help
  709. Kprobes allows you to trap at almost any kernel address and
  710. execute a callback function. register_kprobe() establishes
  711. a probepoint and specifies the callback. Kprobes is useful
  712. for kernel debugging, non-intrusive instrumentation and testing.
  713. If in doubt, say "N".
  714. endmenu
  715. source "arch/powerpc/Kconfig.debug"
  716. source "security/Kconfig"
  717. config KEYS_COMPAT
  718. bool
  719. depends on COMPAT && KEYS
  720. default y
  721. source "crypto/Kconfig"