Kconfig 28 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 PPC32
  12. bool
  13. default y if !PPC64
  14. config 64BIT
  15. bool
  16. default y if PPC64
  17. config PPC_MERGE
  18. def_bool y
  19. config MMU
  20. bool
  21. default y
  22. config GENERIC_HARDIRQS
  23. bool
  24. default y
  25. config IRQ_PER_CPU
  26. bool
  27. default y
  28. config RWSEM_GENERIC_SPINLOCK
  29. bool
  30. config RWSEM_XCHGADD_ALGORITHM
  31. bool
  32. default y
  33. config ARCH_HAS_ILOG2_U32
  34. bool
  35. default y
  36. config ARCH_HAS_ILOG2_U64
  37. bool
  38. default y if 64BIT
  39. config GENERIC_HWEIGHT
  40. bool
  41. default y
  42. config GENERIC_CALIBRATE_DELAY
  43. bool
  44. default y
  45. config GENERIC_FIND_NEXT_BIT
  46. bool
  47. default y
  48. config PPC
  49. bool
  50. default y
  51. config EARLY_PRINTK
  52. bool
  53. default y
  54. config COMPAT
  55. bool
  56. default y if PPC64
  57. config SYSVIPC_COMPAT
  58. bool
  59. depends on COMPAT && SYSVIPC
  60. default y
  61. # All PPC32s use generic nvram driver through ppc_md
  62. config GENERIC_NVRAM
  63. bool
  64. default y if PPC32
  65. config SCHED_NO_NO_OMIT_FRAME_POINTER
  66. bool
  67. default y
  68. config ARCH_MAY_HAVE_PC_FDC
  69. bool
  70. default !PPC_PSERIES || PCI
  71. config PPC_OF
  72. def_bool y
  73. config PPC_UDBG_16550
  74. bool
  75. default n
  76. config GENERIC_TBSYNC
  77. bool
  78. default y if PPC32 && SMP
  79. default n
  80. config AUDIT_ARCH
  81. bool
  82. default y
  83. config GENERIC_BUG
  84. bool
  85. default y
  86. depends on BUG
  87. config DEFAULT_UIMAGE
  88. bool
  89. help
  90. Used to allow a board to specify it wants a uImage built by default
  91. default n
  92. menu "Processor support"
  93. choice
  94. prompt "Processor Type"
  95. depends on PPC32
  96. default 6xx
  97. config CLASSIC32
  98. bool "52xx/6xx/7xx/74xx"
  99. select PPC_FPU
  100. select 6xx
  101. help
  102. There are four families of PowerPC chips supported. The more common
  103. types (601, 603, 604, 740, 750, 7400), the Motorola embedded
  104. versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
  105. embedded versions (403 and 405) and the high end 64 bit Power
  106. processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
  107. This option is the catch-all for 6xx types, including some of the
  108. embedded versions. Unless there is see an option for the specific
  109. chip family you are using, you want this option.
  110. You do not want this if you are building a kernel for a 64 bit
  111. IBM RS/6000 or an Apple G5, choose 6xx.
  112. If unsure, select this option
  113. Note that the kernel runs in 32-bit mode even on 64-bit chips.
  114. config PPC_82xx
  115. bool "Freescale 82xx"
  116. select 6xx
  117. select PPC_FPU
  118. config PPC_83xx
  119. bool "Freescale 83xx"
  120. select 6xx
  121. select FSL_SOC
  122. select 83xx
  123. select PPC_FPU
  124. config PPC_85xx
  125. bool "Freescale 85xx"
  126. select E500
  127. select FSL_SOC
  128. select 85xx
  129. config PPC_86xx
  130. bool "Freescale 86xx"
  131. select 6xx
  132. select FSL_SOC
  133. select PPC_FPU
  134. select ALTIVEC
  135. help
  136. The Freescale E600 SoCs have 74xx cores.
  137. config PPC_8xx
  138. bool "Freescale 8xx"
  139. select FSL_SOC
  140. select 8xx
  141. config 40x
  142. bool "AMCC 40x"
  143. select PPC_DCR_NATIVE
  144. config 44x
  145. bool "AMCC 44x"
  146. select PPC_DCR_NATIVE
  147. config E200
  148. bool "Freescale e200"
  149. endchoice
  150. config POWER4_ONLY
  151. bool "Optimize for POWER4"
  152. depends on PPC64
  153. default n
  154. ---help---
  155. Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  156. The resulting binary will not work on POWER3 or RS64 processors
  157. when compiled with binutils 2.15 or later.
  158. config POWER3
  159. bool
  160. depends on PPC64
  161. default y if !POWER4_ONLY
  162. config POWER4
  163. depends on PPC64
  164. def_bool y
  165. config 6xx
  166. bool
  167. # this is temp to handle compat with arch=ppc
  168. config 8xx
  169. bool
  170. # this is temp to handle compat with arch=ppc
  171. config 83xx
  172. bool
  173. # this is temp to handle compat with arch=ppc
  174. config 85xx
  175. bool
  176. config E500
  177. bool
  178. config PPC_FPU
  179. bool
  180. default y if PPC64
  181. config PPC_DCR_NATIVE
  182. bool
  183. default n
  184. config PPC_DCR_MMIO
  185. bool
  186. default n
  187. config PPC_DCR
  188. bool
  189. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  190. default y
  191. config PPC_OF_PLATFORM_PCI
  192. bool
  193. depends on PPC64 # not supported on 32 bits yet
  194. default n
  195. config BOOKE
  196. bool
  197. depends on E200 || E500
  198. default y
  199. config FSL_BOOKE
  200. bool
  201. depends on E200 || E500
  202. default y
  203. config PTE_64BIT
  204. bool
  205. depends on 44x || E500
  206. default y if 44x
  207. default y if E500 && PHYS_64BIT
  208. config PHYS_64BIT
  209. bool 'Large physical address support' if E500
  210. depends on 44x || E500
  211. select RESOURCES_64BIT
  212. default y if 44x
  213. ---help---
  214. This option enables kernel support for larger than 32-bit physical
  215. addresses. This features is not be available on all e500 cores.
  216. If in doubt, say N here.
  217. config ALTIVEC
  218. bool "AltiVec Support"
  219. depends on CLASSIC32 || POWER4
  220. ---help---
  221. This option enables kernel support for the Altivec extensions to the
  222. PowerPC processor. The kernel currently supports saving and restoring
  223. altivec registers, and turning on the 'altivec enable' bit so user
  224. processes can execute altivec instructions.
  225. This option is only usefully if you have a processor that supports
  226. altivec (G4, otherwise known as 74xx series), but does not have
  227. any affect on a non-altivec cpu (it does, however add code to the
  228. kernel).
  229. If in doubt, say Y here.
  230. config SPE
  231. bool "SPE Support"
  232. depends on E200 || E500
  233. default y
  234. ---help---
  235. This option enables kernel support for the Signal Processing
  236. Extensions (SPE) to the PowerPC processor. The kernel currently
  237. supports saving and restoring SPE registers, and turning on the
  238. 'spe enable' bit so user processes can execute SPE instructions.
  239. This option is only useful if you have a processor that supports
  240. SPE (e500, otherwise known as 85xx series), but does not have any
  241. effect on a non-spe cpu (it does, however add code to the kernel).
  242. If in doubt, say Y here.
  243. config PPC_STD_MMU
  244. bool
  245. depends on 6xx || POWER3 || POWER4 || PPC64
  246. default y
  247. config PPC_STD_MMU_32
  248. def_bool y
  249. depends on PPC_STD_MMU && PPC32
  250. config VIRT_CPU_ACCOUNTING
  251. bool "Deterministic task and CPU time accounting"
  252. depends on PPC64
  253. default y
  254. help
  255. Select this option to enable more accurate task and CPU time
  256. accounting. This is done by reading a CPU counter on each
  257. kernel entry and exit and on transitions within the kernel
  258. between system, softirq and hardirq state, so there is a
  259. small performance impact. This also enables accounting of
  260. stolen time on logically-partitioned systems running on
  261. IBM POWER5-based machines.
  262. If in doubt, say Y here.
  263. config SMP
  264. depends on PPC_STD_MMU
  265. bool "Symmetric multi-processing support"
  266. ---help---
  267. This enables support for systems with more than one CPU. If you have
  268. a system with only one CPU, say N. If you have a system with more
  269. than one CPU, say Y. Note that the kernel does not currently
  270. support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
  271. since they have inadequate hardware support for multiprocessor
  272. operation.
  273. If you say N here, the kernel will run on single and multiprocessor
  274. machines, but will use only one CPU of a multiprocessor machine. If
  275. you say Y here, the kernel will run on single-processor machines.
  276. On a single-processor machine, the kernel will run faster if you say
  277. N here.
  278. If you don't know what to do here, say N.
  279. config NR_CPUS
  280. int "Maximum number of CPUs (2-128)"
  281. range 2 128
  282. depends on SMP
  283. default "32" if PPC64
  284. default "4"
  285. config NOT_COHERENT_CACHE
  286. bool
  287. depends on 4xx || 8xx || E200
  288. default y
  289. endmenu
  290. source "init/Kconfig"
  291. menu "Platform support"
  292. depends on PPC64 || CLASSIC32
  293. choice
  294. prompt "Machine type"
  295. default PPC_MULTIPLATFORM
  296. config PPC_MULTIPLATFORM
  297. bool "Generic desktop/server/laptop"
  298. help
  299. Select this option if configuring for an IBM pSeries or
  300. RS/6000 machine, an Apple machine, or a PReP, CHRP,
  301. Maple or Cell-based machine.
  302. config EMBEDDED6xx
  303. bool "Embedded 6xx/7xx/7xxx-based board"
  304. depends on PPC32 && (BROKEN||BROKEN_ON_SMP)
  305. config APUS
  306. bool "Amiga-APUS"
  307. depends on PPC32 && BROKEN
  308. help
  309. Select APUS if configuring for a PowerUP Amiga.
  310. More information is available at:
  311. <http://linux-apus.sourceforge.net/>.
  312. endchoice
  313. config QUICC_ENGINE
  314. bool
  315. depends on PPC_MPC836x || PPC_MPC832x
  316. default y
  317. help
  318. The QUICC Engine (QE) is a new generation of communications
  319. coprocessors on Freescale embedded CPUs (akin to CPM in older chips).
  320. Selecting this option means that you wish to build a kernel
  321. for a machine with a QE coprocessor.
  322. config PPC_PSERIES
  323. depends on PPC_MULTIPLATFORM && PPC64
  324. bool "IBM pSeries & new (POWER5-based) iSeries"
  325. select MPIC
  326. select PPC_I8259
  327. select PPC_RTAS
  328. select RTAS_ERROR_LOGGING
  329. select PPC_UDBG_16550
  330. select PPC_NATIVE
  331. default y
  332. config PPC_ISERIES
  333. bool "IBM Legacy iSeries"
  334. depends on PPC_MULTIPLATFORM && PPC64
  335. select PPC_INDIRECT_IO
  336. config PPC_CHRP
  337. bool "Common Hardware Reference Platform (CHRP) based machines"
  338. depends on PPC_MULTIPLATFORM && PPC32
  339. select MPIC
  340. select PPC_I8259
  341. select PPC_INDIRECT_PCI
  342. select PPC_RTAS
  343. select PPC_MPC106
  344. select PPC_UDBG_16550
  345. select PPC_NATIVE
  346. default y
  347. source "arch/powerpc/platforms/52xx/Kconfig"
  348. source "arch/powerpc/platforms/powermac/Kconfig"
  349. config PPC_PREP
  350. bool "PowerPC Reference Platform (PReP) based machines"
  351. depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
  352. select MPIC
  353. select PPC_I8259
  354. select PPC_INDIRECT_PCI
  355. select PPC_UDBG_16550
  356. select PPC_NATIVE
  357. default n
  358. config PPC_MAPLE
  359. depends on PPC_MULTIPLATFORM && PPC64
  360. bool "Maple 970FX Evaluation Board"
  361. select MPIC
  362. select U3_DART
  363. select MPIC_BROKEN_U3
  364. select GENERIC_TBSYNC
  365. select PPC_UDBG_16550
  366. select PPC_970_NAP
  367. select PPC_NATIVE
  368. select PPC_RTAS
  369. select MMIO_NVRAM
  370. select ATA_NONSTANDARD if ATA
  371. default n
  372. help
  373. This option enables support for the Maple 970FX Evaluation Board.
  374. For more information, refer to <http://www.970eval.com>
  375. config PPC_PASEMI
  376. depends on PPC_MULTIPLATFORM && PPC64
  377. bool "PA Semi SoC-based platforms"
  378. default n
  379. select MPIC
  380. select PPC_UDBG_16550
  381. select GENERIC_TBSYNC
  382. select PPC_NATIVE
  383. help
  384. This option enables support for PA Semi's PWRficient line
  385. of SoC processors, including PA6T-1682M
  386. source arch/powerpc/platforms/celleb/Kconfig
  387. source arch/powerpc/platforms/ps3/Kconfig
  388. source arch/powerpc/platforms/cell/Kconfig
  389. config PPC_NATIVE
  390. bool
  391. depends on PPC_MULTIPLATFORM
  392. help
  393. Support for running natively on the hardware, i.e. without
  394. a hypervisor. This option is not user-selectable but should
  395. be selected by all platforms that need it.
  396. config UDBG_RTAS_CONSOLE
  397. bool "RTAS based debug console"
  398. depends on PPC_RTAS
  399. default n
  400. config PPC_UDBG_BEAT
  401. bool "BEAT based debug console"
  402. depends on PPC_CELLEB
  403. default n
  404. config XICS
  405. depends on PPC_PSERIES
  406. bool
  407. default y
  408. config U3_DART
  409. bool
  410. depends on PPC_MULTIPLATFORM && PPC64
  411. default n
  412. config PPC_RTAS
  413. bool
  414. default n
  415. config RTAS_ERROR_LOGGING
  416. bool
  417. depends on PPC_RTAS
  418. default n
  419. config RTAS_PROC
  420. bool "Proc interface to RTAS"
  421. depends on PPC_RTAS
  422. default y
  423. config RTAS_FLASH
  424. tristate "Firmware flash interface"
  425. depends on PPC64 && RTAS_PROC
  426. config PPC_PMI
  427. tristate "Support for PMI"
  428. depends PPC_IBM_CELL_BLADE
  429. help
  430. PMI (Platform Management Interrupt) is a way to
  431. communicate with the BMC (Baseboard Mangement Controller).
  432. It is used in some IBM Cell blades.
  433. default m
  434. config MMIO_NVRAM
  435. bool
  436. default n
  437. config MPIC_BROKEN_U3
  438. bool
  439. depends on PPC_MAPLE
  440. default y
  441. config IBMVIO
  442. depends on PPC_PSERIES || PPC_ISERIES
  443. bool
  444. default y
  445. config IBMEBUS
  446. depends on PPC_PSERIES
  447. bool "Support for GX bus based adapters"
  448. help
  449. Bus device driver for GX bus based adapters.
  450. config PPC_MPC106
  451. bool
  452. default n
  453. config PPC_970_NAP
  454. bool
  455. default n
  456. config PPC_INDIRECT_IO
  457. bool
  458. select GENERIC_IOMAP
  459. default n
  460. config GENERIC_IOMAP
  461. bool
  462. default n
  463. source "drivers/cpufreq/Kconfig"
  464. config CPU_FREQ_PMAC
  465. bool "Support for Apple PowerBooks"
  466. depends on CPU_FREQ && ADB_PMU && PPC32
  467. select CPU_FREQ_TABLE
  468. help
  469. This adds support for frequency switching on Apple PowerBooks,
  470. this currently includes some models of iBook & Titanium
  471. PowerBook.
  472. config CPU_FREQ_PMAC64
  473. bool "Support for some Apple G5s"
  474. depends on CPU_FREQ && PPC64
  475. select CPU_FREQ_TABLE
  476. help
  477. This adds support for frequency switching on Apple iMac G5,
  478. and some of the more recent desktop G5 machines as well.
  479. config PPC601_SYNC_FIX
  480. bool "Workarounds for PPC601 bugs"
  481. depends on 6xx && (PPC_PREP || PPC_PMAC)
  482. help
  483. Some versions of the PPC601 (the first PowerPC chip) have bugs which
  484. mean that extra synchronization instructions are required near
  485. certain instructions, typically those that make major changes to the
  486. CPU state. These extra instructions reduce performance slightly.
  487. If you say N here, these extra instructions will not be included,
  488. resulting in a kernel which will run faster but may not run at all
  489. on some systems with the PPC601 chip.
  490. If in doubt, say Y here.
  491. config TAU
  492. bool "On-chip CPU temperature sensor support"
  493. depends on 6xx
  494. help
  495. G3 and G4 processors have an on-chip temperature sensor called the
  496. 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
  497. temperature within 2-4 degrees Celsius. This option shows the current
  498. on-die temperature in /proc/cpuinfo if the cpu supports it.
  499. Unfortunately, on some chip revisions, this sensor is very inaccurate
  500. and in many cases, does not work at all, so don't assume the cpu
  501. temp is actually what /proc/cpuinfo says it is.
  502. config TAU_INT
  503. bool "Interrupt driven TAU driver (DANGEROUS)"
  504. depends on TAU
  505. ---help---
  506. The TAU supports an interrupt driven mode which causes an interrupt
  507. whenever the temperature goes out of range. This is the fastest way
  508. to get notified the temp has exceeded a range. With this option off,
  509. a timer is used to re-check the temperature periodically.
  510. However, on some cpus it appears that the TAU interrupt hardware
  511. is buggy and can cause a situation which would lead unexplained hard
  512. lockups.
  513. Unless you are extending the TAU driver, or enjoy kernel/hardware
  514. debugging, leave this option off.
  515. config TAU_AVERAGE
  516. bool "Average high and low temp"
  517. depends on TAU
  518. ---help---
  519. The TAU hardware can compare the temperature to an upper and lower
  520. bound. The default behavior is to show both the upper and lower
  521. bound in /proc/cpuinfo. If the range is large, the temperature is
  522. either changing a lot, or the TAU hardware is broken (likely on some
  523. G4's). If the range is small (around 4 degrees), the temperature is
  524. relatively stable. If you say Y here, a single temperature value,
  525. halfway between the upper and lower bounds, will be reported in
  526. /proc/cpuinfo.
  527. If in doubt, say N here.
  528. endmenu
  529. source arch/powerpc/platforms/embedded6xx/Kconfig
  530. source arch/powerpc/platforms/4xx/Kconfig
  531. source arch/powerpc/platforms/82xx/Kconfig
  532. source arch/powerpc/platforms/83xx/Kconfig
  533. source arch/powerpc/platforms/85xx/Kconfig
  534. source arch/powerpc/platforms/86xx/Kconfig
  535. source arch/powerpc/platforms/8xx/Kconfig
  536. source arch/powerpc/platforms/pasemi/Kconfig
  537. menu "Kernel options"
  538. config HIGHMEM
  539. bool "High memory support"
  540. depends on PPC32
  541. source kernel/Kconfig.hz
  542. source kernel/Kconfig.preempt
  543. source "fs/Kconfig.binfmt"
  544. # We optimistically allocate largepages from the VM, so make the limit
  545. # large enough (16MB). This badly named config option is actually
  546. # max order + 1
  547. config FORCE_MAX_ZONEORDER
  548. int
  549. depends on PPC64
  550. default "9" if PPC_64K_PAGES
  551. default "13"
  552. config MATH_EMULATION
  553. bool "Math emulation"
  554. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  555. ---help---
  556. Some PowerPC chips designed for embedded applications do not have
  557. a floating-point unit and therefore do not implement the
  558. floating-point instructions in the PowerPC instruction set. If you
  559. say Y here, the kernel will include code to emulate a floating-point
  560. unit, which will allow programs that use floating-point
  561. instructions to run.
  562. config IOMMU_VMERGE
  563. bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
  564. depends on EXPERIMENTAL && PPC64
  565. default n
  566. help
  567. Cause IO segments sent to a device for DMA to be merged virtually
  568. by the IOMMU when they happen to have been allocated contiguously.
  569. This doesn't add pressure to the IOMMU allocator. However, some
  570. drivers don't support getting large merged segments coming back
  571. from *_map_sg(). Say Y if you know the drivers you are using are
  572. properly handling this case.
  573. config HOTPLUG_CPU
  574. bool "Support for enabling/disabling CPUs"
  575. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  576. ---help---
  577. Say Y here to be able to disable and re-enable individual
  578. CPUs at runtime on SMP machines.
  579. Say N if you are unsure.
  580. config ARCH_ENABLE_MEMORY_HOTPLUG
  581. def_bool y
  582. config KEXEC
  583. bool "kexec system call (EXPERIMENTAL)"
  584. depends on PPC_MULTIPLATFORM && EXPERIMENTAL
  585. help
  586. kexec is a system call that implements the ability to shutdown your
  587. current kernel, and to start another kernel. It is like a reboot
  588. but it is independent of the system firmware. And like a reboot
  589. you can start any kernel with it, not just Linux.
  590. The name comes from the similarity to the exec system call.
  591. It is an ongoing process to be certain the hardware in a machine
  592. is properly shutdown, so do not be surprised if this code does not
  593. initially work for you. It may help to enable device hotplugging
  594. support. As of this writing the exact hardware interface is
  595. strongly in flux, so no good recommendation can be made.
  596. config CRASH_DUMP
  597. bool "Build a kdump crash kernel (EXPERIMENTAL)"
  598. depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
  599. help
  600. Build a kernel suitable for use as a kdump capture kernel.
  601. The kernel will be linked at a different address than normal, and
  602. so can only be used for Kdump.
  603. Don't change this unless you know what you are doing.
  604. config EMBEDDEDBOOT
  605. bool
  606. depends on 8xx || 8260
  607. default y
  608. config PC_KEYBOARD
  609. bool "PC PS/2 style Keyboard"
  610. depends on 4xx || CPM2
  611. config PPCBUG_NVRAM
  612. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  613. default y if PPC_PREP
  614. config IRQ_ALL_CPUS
  615. bool "Distribute interrupts on all CPUs by default"
  616. depends on SMP && !MV64360
  617. help
  618. This option gives the kernel permission to distribute IRQs across
  619. multiple CPUs. Saying N here will route all IRQs to the first
  620. CPU. Generally saying Y is safe, although some problems have been
  621. reported with SMP Power Macintoshes with this option enabled.
  622. source "arch/powerpc/platforms/pseries/Kconfig"
  623. config NUMA
  624. bool "NUMA support"
  625. depends on PPC64
  626. default y if SMP && PPC_PSERIES
  627. config NODES_SHIFT
  628. int
  629. default "4"
  630. depends on NEED_MULTIPLE_NODES
  631. config ARCH_SELECT_MEMORY_MODEL
  632. def_bool y
  633. depends on PPC64
  634. config ARCH_FLATMEM_ENABLE
  635. def_bool y
  636. depends on (PPC64 && !NUMA) || PPC32
  637. config ARCH_SPARSEMEM_ENABLE
  638. def_bool y
  639. depends on PPC64
  640. config ARCH_SPARSEMEM_DEFAULT
  641. def_bool y
  642. depends on (SMP && PPC_PSERIES) || PPC_PS3
  643. config ARCH_POPULATES_NODE_MAP
  644. def_bool y
  645. source "mm/Kconfig"
  646. config ARCH_MEMORY_PROBE
  647. def_bool y
  648. depends on MEMORY_HOTPLUG
  649. # Some NUMA nodes have memory ranges that span
  650. # other nodes. Even though a pfn is valid and
  651. # between a node's start and end pfns, it may not
  652. # reside on that node. See memmap_init_zone()
  653. # for details.
  654. config NODES_SPAN_OTHER_NODES
  655. def_bool y
  656. depends on NEED_MULTIPLE_NODES
  657. config PPC_64K_PAGES
  658. bool "64k page size"
  659. depends on PPC64
  660. help
  661. This option changes the kernel logical page size to 64k. On machines
  662. without processor support for 64k pages, the kernel will simulate
  663. them by loading each individual 4k page on demand transparently,
  664. while on hardware with such support, it will be used to map
  665. normal application pages.
  666. config SCHED_SMT
  667. bool "SMT (Hyperthreading) scheduler support"
  668. depends on PPC64 && SMP
  669. help
  670. SMT scheduler support improves the CPU scheduler's decision making
  671. when dealing with POWER5 cpus at a cost of slightly increased
  672. overhead in some places. If unsure say N here.
  673. config PROC_DEVICETREE
  674. bool "Support for device tree in /proc"
  675. depends on PROC_FS
  676. help
  677. This option adds a device-tree directory under /proc which contains
  678. an image of the device tree that the kernel copies from Open
  679. Firmware or other boot firmware. If unsure, say Y here.
  680. source "arch/powerpc/platforms/prep/Kconfig"
  681. config CMDLINE_BOOL
  682. bool "Default bootloader kernel arguments"
  683. config CMDLINE
  684. string "Initial kernel command string"
  685. depends on CMDLINE_BOOL
  686. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  687. help
  688. On some platforms, there is currently no way for the boot loader to
  689. pass arguments to the kernel. For these platforms, you can supply
  690. some command-line options at build time by entering them here. In
  691. most cases you will need to specify the root device here.
  692. if !44x || BROKEN
  693. source kernel/power/Kconfig
  694. endif
  695. config SECCOMP
  696. bool "Enable seccomp to safely compute untrusted bytecode"
  697. depends on PROC_FS
  698. default y
  699. help
  700. This kernel feature is useful for number crunching applications
  701. that may need to compute untrusted bytecode during their
  702. execution. By using pipes or other transports made available to
  703. the process as file descriptors supporting the read/write
  704. syscalls, it's possible to isolate those applications in
  705. their own address space using seccomp. Once seccomp is
  706. enabled via /proc/<pid>/seccomp, it cannot be disabled
  707. and the task is only allowed to execute a few safe syscalls
  708. defined by each seccomp mode.
  709. If unsure, say Y. Only embedded should say N here.
  710. endmenu
  711. config ISA_DMA_API
  712. bool
  713. default y
  714. menu "Bus options"
  715. config ISA
  716. bool "Support for ISA-bus hardware"
  717. depends on PPC_PREP || PPC_CHRP
  718. select PPC_I8259
  719. help
  720. Find out whether you have ISA slots on your motherboard. ISA is the
  721. name of a bus system, i.e. the way the CPU talks to the other stuff
  722. inside your box. If you have an Apple machine, say N here; if you
  723. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  724. you have an embedded board, consult your board documentation.
  725. config ZONE_DMA
  726. bool
  727. default y
  728. config GENERIC_ISA_DMA
  729. bool
  730. depends on PPC64 || POWER4 || 6xx && !CPM2
  731. default y
  732. config MPIC
  733. bool
  734. default n
  735. config MPIC_WEIRD
  736. bool
  737. default n
  738. config PPC_I8259
  739. bool
  740. default n
  741. config PPC_INDIRECT_PCI
  742. bool
  743. depends on PCI
  744. default y if 40x || 44x
  745. default n
  746. config EISA
  747. bool
  748. config SBUS
  749. bool
  750. config FSL_SOC
  751. bool
  752. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  753. config MCA
  754. bool
  755. config PCI
  756. bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
  757. || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
  758. || MPC7448HPC2 || PPC_PS3
  759. default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
  760. && !PPC_85xx && !PPC_86xx
  761. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
  762. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  763. help
  764. Find out whether your system includes a PCI bus. PCI is the name of
  765. a bus system, i.e. the way the CPU talks to the other stuff inside
  766. your box. If you say Y here, the kernel will include drivers and
  767. infrastructure code to support PCI bus devices.
  768. config PCI_DOMAINS
  769. bool
  770. default PCI
  771. config PCI_QSPAN
  772. bool "QSpan PCI"
  773. depends on !4xx && !CPM2 && 8xx
  774. select PPC_I8259
  775. help
  776. Say Y here if you have a system based on a Motorola 8xx-series
  777. embedded processor with a QSPAN PCI interface, otherwise say N.
  778. config PCI_8260
  779. bool
  780. depends on PCI && 8260
  781. select PPC_INDIRECT_PCI
  782. default y
  783. config 8260_PCI9
  784. bool "Enable workaround for MPC826x erratum PCI 9"
  785. depends on PCI_8260 && !ADS8272
  786. default y
  787. choice
  788. prompt "IDMA channel for PCI 9 workaround"
  789. depends on 8260_PCI9
  790. config 8260_PCI9_IDMA1
  791. bool "IDMA1"
  792. config 8260_PCI9_IDMA2
  793. bool "IDMA2"
  794. config 8260_PCI9_IDMA3
  795. bool "IDMA3"
  796. config 8260_PCI9_IDMA4
  797. bool "IDMA4"
  798. endchoice
  799. source "drivers/pci/pcie/Kconfig"
  800. source "drivers/pci/Kconfig"
  801. source "drivers/pcmcia/Kconfig"
  802. source "drivers/pci/hotplug/Kconfig"
  803. endmenu
  804. menu "Advanced setup"
  805. depends on PPC32
  806. config ADVANCED_OPTIONS
  807. bool "Prompt for advanced kernel configuration options"
  808. help
  809. This option will enable prompting for a variety of advanced kernel
  810. configuration options. These options can cause the kernel to not
  811. work if they are set incorrectly, but can be used to optimize certain
  812. aspects of kernel memory management.
  813. Unless you know what you are doing, say N here.
  814. comment "Default settings for advanced configuration options are used"
  815. depends on !ADVANCED_OPTIONS
  816. config HIGHMEM_START_BOOL
  817. bool "Set high memory pool address"
  818. depends on ADVANCED_OPTIONS && HIGHMEM
  819. help
  820. This option allows you to set the base address of the kernel virtual
  821. area used to map high memory pages. This can be useful in
  822. optimizing the layout of kernel virtual memory.
  823. Say N here unless you know what you are doing.
  824. config HIGHMEM_START
  825. hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
  826. default "0xfe000000"
  827. config LOWMEM_SIZE_BOOL
  828. bool "Set maximum low memory"
  829. depends on ADVANCED_OPTIONS
  830. help
  831. This option allows you to set the maximum amount of memory which
  832. will be used as "low memory", that is, memory which the kernel can
  833. access directly, without having to set up a kernel virtual mapping.
  834. This can be useful in optimizing the layout of kernel virtual
  835. memory.
  836. Say N here unless you know what you are doing.
  837. config LOWMEM_SIZE
  838. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  839. default "0x30000000"
  840. config KERNEL_START_BOOL
  841. bool "Set custom kernel base address"
  842. depends on ADVANCED_OPTIONS
  843. help
  844. This option allows you to set the kernel virtual address at which
  845. the kernel will map low memory (the kernel image will be linked at
  846. this address). This can be useful in optimizing the virtual memory
  847. layout of the system.
  848. Say N here unless you know what you are doing.
  849. config KERNEL_START
  850. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  851. default "0xc0000000"
  852. config TASK_SIZE_BOOL
  853. bool "Set custom user task size"
  854. depends on ADVANCED_OPTIONS
  855. help
  856. This option allows you to set the amount of virtual address space
  857. allocated to user tasks. This can be useful in optimizing the
  858. virtual memory layout of the system.
  859. Say N here unless you know what you are doing.
  860. config TASK_SIZE
  861. hex "Size of user task space" if TASK_SIZE_BOOL
  862. default "0x80000000"
  863. config CONSISTENT_START_BOOL
  864. bool "Set custom consistent memory pool address"
  865. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  866. help
  867. This option allows you to set the base virtual address
  868. of the consistent memory pool. This pool of virtual
  869. memory is used to make consistent memory allocations.
  870. config CONSISTENT_START
  871. hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
  872. default "0xff100000" if NOT_COHERENT_CACHE
  873. config CONSISTENT_SIZE_BOOL
  874. bool "Set custom consistent memory pool size"
  875. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  876. help
  877. This option allows you to set the size of the
  878. consistent memory pool. This pool of virtual memory
  879. is used to make consistent memory allocations.
  880. config CONSISTENT_SIZE
  881. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  882. default "0x00200000" if NOT_COHERENT_CACHE
  883. config BOOT_LOAD_BOOL
  884. bool "Set the boot link/load address"
  885. depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
  886. help
  887. This option allows you to set the initial load address of the zImage
  888. or zImage.initrd file. This can be useful if you are on a board
  889. which has a small amount of memory.
  890. Say N here unless you know what you are doing.
  891. config BOOT_LOAD
  892. hex "Link/load address for booting" if BOOT_LOAD_BOOL
  893. default "0x00400000" if 40x || 8xx || 8260
  894. default "0x01000000" if 44x
  895. default "0x00800000"
  896. config PIN_TLB
  897. bool "Pinned Kernel TLBs (860 ONLY)"
  898. depends on ADVANCED_OPTIONS && 8xx
  899. endmenu
  900. if PPC64
  901. config KERNEL_START
  902. hex
  903. default "0xc000000000000000"
  904. endif
  905. source "net/Kconfig"
  906. source "drivers/Kconfig"
  907. source "fs/Kconfig"
  908. # XXX source "arch/ppc/8xx_io/Kconfig"
  909. # XXX source "arch/ppc/8260_io/Kconfig"
  910. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  911. source "arch/powerpc/platforms/iseries/Kconfig"
  912. source "lib/Kconfig"
  913. menu "Instrumentation Support"
  914. depends on EXPERIMENTAL
  915. source "arch/powerpc/oprofile/Kconfig"
  916. config KPROBES
  917. bool "Kprobes (EXPERIMENTAL)"
  918. depends on !BOOKE && !4xx && KALLSYMS && EXPERIMENTAL && MODULES
  919. help
  920. Kprobes allows you to trap at almost any kernel address and
  921. execute a callback function. register_kprobe() establishes
  922. a probepoint and specifies the callback. Kprobes is useful
  923. for kernel debugging, non-intrusive instrumentation and testing.
  924. If in doubt, say "N".
  925. endmenu
  926. source "arch/powerpc/Kconfig.debug"
  927. source "security/Kconfig"
  928. config KEYS_COMPAT
  929. bool
  930. depends on COMPAT && KEYS
  931. default y
  932. source "crypto/Kconfig"