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 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 UID16
  23. bool
  24. config GENERIC_HARDIRQS
  25. bool
  26. default y
  27. config RWSEM_GENERIC_SPINLOCK
  28. bool
  29. config RWSEM_XCHGADD_ALGORITHM
  30. bool
  31. default y
  32. config GENERIC_CALIBRATE_DELAY
  33. bool
  34. default y
  35. config PPC
  36. bool
  37. default y
  38. config EARLY_PRINTK
  39. bool
  40. default y if PPC64
  41. config COMPAT
  42. bool
  43. default y if PPC64
  44. config SYSVIPC_COMPAT
  45. bool
  46. depends on COMPAT && SYSVIPC
  47. default y
  48. # All PPC32s use generic nvram driver through ppc_md
  49. config GENERIC_NVRAM
  50. bool
  51. default y if PPC32
  52. config SCHED_NO_NO_OMIT_FRAME_POINTER
  53. bool
  54. default y
  55. config ARCH_MAY_HAVE_PC_FDC
  56. bool
  57. default y
  58. menu "Processor support"
  59. choice
  60. prompt "Processor Type"
  61. depends on PPC32
  62. default 6xx
  63. config 6xx
  64. bool "6xx/7xx/74xx"
  65. select PPC_FPU
  66. help
  67. There are four families of PowerPC chips supported. The more common
  68. types (601, 603, 604, 740, 750, 7400), the Motorola embedded
  69. versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
  70. embedded versions (403 and 405) and the high end 64 bit Power
  71. processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
  72. Unless you are building a kernel for one of the embedded processor
  73. systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
  74. Note that the kernel runs in 32-bit mode even on 64-bit chips.
  75. config PPC_52xx
  76. bool "Freescale 52xx"
  77. config PPC_82xx
  78. bool "Freescale 82xx"
  79. config PPC_83xx
  80. bool "Freescale 83xx"
  81. config 40x
  82. bool "AMCC 40x"
  83. config 44x
  84. bool "AMCC 44x"
  85. config 8xx
  86. bool "Freescale 8xx"
  87. config E200
  88. bool "Freescale e200"
  89. config E500
  90. bool "Freescale e500"
  91. endchoice
  92. config POWER4_ONLY
  93. bool "Optimize for POWER4"
  94. depends on PPC64
  95. default n
  96. ---help---
  97. Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  98. The resulting binary will not work on POWER3 or RS64 processors
  99. when compiled with binutils 2.15 or later.
  100. config POWER3
  101. bool
  102. depends on PPC64
  103. default y if !POWER4_ONLY
  104. config POWER4
  105. depends on PPC64
  106. def_bool y
  107. config PPC_FPU
  108. bool
  109. default y if PPC64
  110. config BOOKE
  111. bool
  112. depends on E200 || E500
  113. default y
  114. config FSL_BOOKE
  115. bool
  116. depends on E200 || E500
  117. default y
  118. config PTE_64BIT
  119. bool
  120. depends on 44x || E500
  121. default y if 44x
  122. default y if E500 && PHYS_64BIT
  123. config PHYS_64BIT
  124. bool 'Large physical address support' if E500
  125. depends on 44x || E500
  126. default y if 44x
  127. ---help---
  128. This option enables kernel support for larger than 32-bit physical
  129. addresses. This features is not be available on all e500 cores.
  130. If in doubt, say N here.
  131. config ALTIVEC
  132. bool "AltiVec Support"
  133. depends on 6xx || POWER4
  134. ---help---
  135. This option enables kernel support for the Altivec extensions to the
  136. PowerPC processor. The kernel currently supports saving and restoring
  137. altivec registers, and turning on the 'altivec enable' bit so user
  138. processes can execute altivec instructions.
  139. This option is only usefully if you have a processor that supports
  140. altivec (G4, otherwise known as 74xx series), but does not have
  141. any affect on a non-altivec cpu (it does, however add code to the
  142. kernel).
  143. If in doubt, say Y here.
  144. config SPE
  145. bool "SPE Support"
  146. depends on E200 || E500
  147. ---help---
  148. This option enables kernel support for the Signal Processing
  149. Extensions (SPE) to the PowerPC processor. The kernel currently
  150. supports saving and restoring SPE registers, and turning on the
  151. 'spe enable' bit so user processes can execute SPE instructions.
  152. This option is only useful if you have a processor that supports
  153. SPE (e500, otherwise known as 85xx series), but does not have any
  154. effect on a non-spe cpu (it does, however add code to the kernel).
  155. If in doubt, say Y here.
  156. config PPC_STD_MMU
  157. bool
  158. depends on 6xx || POWER3 || POWER4 || PPC64
  159. default y
  160. config PPC_STD_MMU_32
  161. def_bool y
  162. depends on PPC_STD_MMU && PPC32
  163. config SMP
  164. depends on PPC_STD_MMU
  165. bool "Symmetric multi-processing support"
  166. ---help---
  167. This enables support for systems with more than one CPU. If you have
  168. a system with only one CPU, say N. If you have a system with more
  169. than one CPU, say Y. Note that the kernel does not currently
  170. support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
  171. since they have inadequate hardware support for multiprocessor
  172. operation.
  173. If you say N here, the kernel will run on single and multiprocessor
  174. machines, but will use only one CPU of a multiprocessor machine. If
  175. you say Y here, the kernel will run on single-processor machines.
  176. On a single-processor machine, the kernel will run faster if you say
  177. N here.
  178. If you don't know what to do here, say N.
  179. config NR_CPUS
  180. int "Maximum number of CPUs (2-32)"
  181. range 2 128
  182. depends on SMP
  183. default "32" if PPC64
  184. default "4"
  185. config NOT_COHERENT_CACHE
  186. bool
  187. depends on 4xx || 8xx || E200
  188. default y
  189. endmenu
  190. source "init/Kconfig"
  191. menu "Platform support"
  192. depends on PPC64 || 6xx
  193. choice
  194. prompt "Machine type"
  195. default PPC_MULTIPLATFORM
  196. config PPC_MULTIPLATFORM
  197. bool "Generic desktop/server/laptop"
  198. help
  199. Select this option if configuring for an IBM pSeries or
  200. RS/6000 machine, an Apple machine, or a PReP, CHRP,
  201. Maple or Cell-based machine.
  202. config PPC_ISERIES
  203. bool "IBM Legacy iSeries"
  204. depends on PPC64
  205. config EMBEDDED6xx
  206. bool "Embedded 6xx/7xx/7xxx-based board"
  207. depends on PPC32
  208. config APUS
  209. bool "Amiga-APUS"
  210. depends on PPC32 && BROKEN
  211. help
  212. Select APUS if configuring for a PowerUP Amiga.
  213. More information is available at:
  214. <http://linux-apus.sourceforge.net/>.
  215. endchoice
  216. config PPC_PSERIES
  217. depends on PPC_MULTIPLATFORM && PPC64
  218. bool " IBM pSeries & new (POWER5-based) iSeries"
  219. default y
  220. config PPC_CHRP
  221. bool " Common Hardware Reference Platform (CHRP) based machines"
  222. depends on PPC_MULTIPLATFORM && PPC32
  223. select PPC_INDIRECT_PCI
  224. default y
  225. config PPC_PMAC
  226. bool " Apple PowerMac based machines"
  227. depends on PPC_MULTIPLATFORM
  228. select PPC_INDIRECT_PCI if PPC32
  229. default y
  230. config PPC_PMAC64
  231. bool
  232. depends on PPC_PMAC && POWER4
  233. select U3_DART
  234. default y
  235. config PPC_PREP
  236. bool " PowerPC Reference Platform (PReP) based machines"
  237. depends on PPC_MULTIPLATFORM && PPC32
  238. select PPC_INDIRECT_PCI
  239. default y
  240. config PPC_MAPLE
  241. depends on PPC_MULTIPLATFORM && PPC64
  242. bool " Maple 970FX Evaluation Board"
  243. select U3_DART
  244. select MPIC_BROKEN_U3
  245. default n
  246. help
  247. This option enables support for the Maple 970FX Evaluation Board.
  248. For more informations, refer to <http://www.970eval.com>
  249. config PPC_BPA
  250. bool " Broadband Processor Architecture"
  251. depends on PPC_MULTIPLATFORM && PPC64
  252. config PPC_OF
  253. bool
  254. depends on PPC_MULTIPLATFORM # for now
  255. default y
  256. config XICS
  257. depends on PPC_PSERIES
  258. bool
  259. default y
  260. config U3_DART
  261. bool
  262. depends on PPC_MULTIPLATFORM && PPC64
  263. default n
  264. config MPIC
  265. depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE
  266. bool
  267. default y
  268. config MPIC_BROKEN_U3
  269. bool
  270. depends on PPC_MAPLE
  271. default y
  272. config BPA_IIC
  273. depends on PPC_BPA
  274. bool
  275. default y
  276. config IBMVIO
  277. depends on PPC_PSERIES || PPC_ISERIES
  278. bool
  279. default y
  280. source "drivers/cpufreq/Kconfig"
  281. config CPU_FREQ_PMAC
  282. bool "Support for Apple PowerBooks"
  283. depends on CPU_FREQ && ADB_PMU && PPC32
  284. select CPU_FREQ_TABLE
  285. help
  286. This adds support for frequency switching on Apple PowerBooks,
  287. this currently includes some models of iBook & Titanium
  288. PowerBook.
  289. config PPC601_SYNC_FIX
  290. bool "Workarounds for PPC601 bugs"
  291. depends on 6xx && (PPC_PREP || PPC_PMAC)
  292. help
  293. Some versions of the PPC601 (the first PowerPC chip) have bugs which
  294. mean that extra synchronization instructions are required near
  295. certain instructions, typically those that make major changes to the
  296. CPU state. These extra instructions reduce performance slightly.
  297. If you say N here, these extra instructions will not be included,
  298. resulting in a kernel which will run faster but may not run at all
  299. on some systems with the PPC601 chip.
  300. If in doubt, say Y here.
  301. config TAU
  302. bool "Thermal Management Support"
  303. depends on 6xx
  304. help
  305. G3 and G4 processors have an on-chip temperature sensor called the
  306. 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
  307. temperature within 2-4 degrees Celsius. This option shows the current
  308. on-die temperature in /proc/cpuinfo if the cpu supports it.
  309. Unfortunately, on some chip revisions, this sensor is very inaccurate
  310. and in some cases, does not work at all, so don't assume the cpu
  311. temp is actually what /proc/cpuinfo says it is.
  312. config TAU_INT
  313. bool "Interrupt driven TAU driver (DANGEROUS)"
  314. depends on TAU
  315. ---help---
  316. The TAU supports an interrupt driven mode which causes an interrupt
  317. whenever the temperature goes out of range. This is the fastest way
  318. to get notified the temp has exceeded a range. With this option off,
  319. a timer is used to re-check the temperature periodically.
  320. However, on some cpus it appears that the TAU interrupt hardware
  321. is buggy and can cause a situation which would lead unexplained hard
  322. lockups.
  323. Unless you are extending the TAU driver, or enjoy kernel/hardware
  324. debugging, leave this option off.
  325. config TAU_AVERAGE
  326. bool "Average high and low temp"
  327. depends on TAU
  328. ---help---
  329. The TAU hardware can compare the temperature to an upper and lower
  330. bound. The default behavior is to show both the upper and lower
  331. bound in /proc/cpuinfo. If the range is large, the temperature is
  332. either changing a lot, or the TAU hardware is broken (likely on some
  333. G4's). If the range is small (around 4 degrees), the temperature is
  334. relatively stable. If you say Y here, a single temperature value,
  335. halfway between the upper and lower bounds, will be reported in
  336. /proc/cpuinfo.
  337. If in doubt, say N here.
  338. endmenu
  339. source arch/powerpc/platforms/embedded6xx/Kconfig
  340. source arch/powerpc/platforms/4xx/Kconfig
  341. source arch/powerpc/platforms/85xx/Kconfig
  342. source arch/powerpc/platforms/8xx/Kconfig
  343. menu "Kernel options"
  344. config HIGHMEM
  345. bool "High memory support"
  346. depends on PPC32
  347. source kernel/Kconfig.hz
  348. source kernel/Kconfig.preempt
  349. source "fs/Kconfig.binfmt"
  350. # We optimistically allocate largepages from the VM, so make the limit
  351. # large enough (16MB). This badly named config option is actually
  352. # max order + 1
  353. config FORCE_MAX_ZONEORDER
  354. int
  355. depends on PPC64
  356. default "13"
  357. config MATH_EMULATION
  358. bool "Math emulation"
  359. depends on 4xx || 8xx || E200 || E500
  360. ---help---
  361. Some PowerPC chips designed for embedded applications do not have
  362. a floating-point unit and therefore do not implement the
  363. floating-point instructions in the PowerPC instruction set. If you
  364. say Y here, the kernel will include code to emulate a floating-point
  365. unit, which will allow programs that use floating-point
  366. instructions to run.
  367. config IOMMU_VMERGE
  368. bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
  369. depends on EXPERIMENTAL && PPC64
  370. default n
  371. help
  372. Cause IO segments sent to a device for DMA to be merged virtually
  373. by the IOMMU when they happen to have been allocated contiguously.
  374. This doesn't add pressure to the IOMMU allocator. However, some
  375. drivers don't support getting large merged segments coming back
  376. from *_map_sg(). Say Y if you know the drivers you are using are
  377. properly handling this case.
  378. config HOTPLUG_CPU
  379. bool "Support for enabling/disabling CPUs"
  380. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  381. ---help---
  382. Say Y here to be able to disable and re-enable individual
  383. CPUs at runtime on SMP machines.
  384. Say N if you are unsure.
  385. config KEXEC
  386. bool "kexec system call (EXPERIMENTAL)"
  387. depends on PPC_MULTIPLATFORM && EXPERIMENTAL
  388. help
  389. kexec is a system call that implements the ability to shutdown your
  390. current kernel, and to start another kernel. It is like a reboot
  391. but it is indepedent of the system firmware. And like a reboot
  392. you can start any kernel with it, not just Linux.
  393. The name comes from the similiarity to the exec system call.
  394. It is an ongoing process to be certain the hardware in a machine
  395. is properly shutdown, so do not be surprised if this code does not
  396. initially work for you. It may help to enable device hotplugging
  397. support. As of this writing the exact hardware interface is
  398. strongly in flux, so no good recommendation can be made.
  399. config EMBEDDEDBOOT
  400. bool
  401. depends on 8xx || 8260
  402. default y
  403. config PC_KEYBOARD
  404. bool "PC PS/2 style Keyboard"
  405. depends on 4xx || CPM2
  406. config PPCBUG_NVRAM
  407. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  408. default y if PPC_PREP
  409. config IRQ_ALL_CPUS
  410. bool "Distribute interrupts on all CPUs by default"
  411. depends on SMP && !MV64360
  412. help
  413. This option gives the kernel permission to distribute IRQs across
  414. multiple CPUs. Saying N here will route all IRQs to the first
  415. CPU. Generally saying Y is safe, although some problems have been
  416. reported with SMP Power Macintoshes with this option enabled.
  417. source "arch/powerpc/platforms/pseries/Kconfig"
  418. config ARCH_SELECT_MEMORY_MODEL
  419. def_bool y
  420. depends on PPC64
  421. config ARCH_FLATMEM_ENABLE
  422. def_bool y
  423. depends on PPC64 && !NUMA
  424. config ARCH_DISCONTIGMEM_ENABLE
  425. def_bool y
  426. depends on SMP && PPC_PSERIES
  427. config ARCH_DISCONTIGMEM_DEFAULT
  428. def_bool y
  429. depends on ARCH_DISCONTIGMEM_ENABLE
  430. config ARCH_FLATMEM_ENABLE
  431. def_bool y
  432. depends on PPC64
  433. config ARCH_SPARSEMEM_ENABLE
  434. def_bool y
  435. depends on ARCH_DISCONTIGMEM_ENABLE
  436. source "mm/Kconfig"
  437. config HAVE_ARCH_EARLY_PFN_TO_NID
  438. def_bool y
  439. depends on NEED_MULTIPLE_NODES
  440. # Some NUMA nodes have memory ranges that span
  441. # other nodes. Even though a pfn is valid and
  442. # between a node's start and end pfns, it may not
  443. # reside on that node.
  444. #
  445. # This is a relatively temporary hack that should
  446. # be able to go away when sparsemem is fully in
  447. # place
  448. config NODES_SPAN_OTHER_NODES
  449. def_bool y
  450. depends on NEED_MULTIPLE_NODES
  451. config NUMA
  452. bool "NUMA support"
  453. default y if DISCONTIGMEM || SPARSEMEM
  454. config SCHED_SMT
  455. bool "SMT (Hyperthreading) scheduler support"
  456. depends on PPC64 && SMP
  457. default off
  458. help
  459. SMT scheduler support improves the CPU scheduler's decision making
  460. when dealing with POWER5 cpus at a cost of slightly increased
  461. overhead in some places. If unsure say N here.
  462. config PROC_DEVICETREE
  463. bool "Support for device tree in /proc"
  464. depends on PROC_FS
  465. help
  466. This option adds a device-tree directory under /proc which contains
  467. an image of the device tree that the kernel copies from Open
  468. Firmware or other boot firmware. If unsure, say Y here.
  469. source "arch/powerpc/platforms/prep/Kconfig"
  470. config CMDLINE_BOOL
  471. bool "Default bootloader kernel arguments"
  472. depends on !PPC_ISERIES
  473. config CMDLINE
  474. string "Initial kernel command string"
  475. depends on CMDLINE_BOOL
  476. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  477. help
  478. On some platforms, there is currently no way for the boot loader to
  479. pass arguments to the kernel. For these platforms, you can supply
  480. some command-line options at build time by entering them here. In
  481. most cases you will need to specify the root device here.
  482. if !44x || BROKEN
  483. source kernel/power/Kconfig
  484. endif
  485. config SECCOMP
  486. bool "Enable seccomp to safely compute untrusted bytecode"
  487. depends on PROC_FS
  488. default y
  489. help
  490. This kernel feature is useful for number crunching applications
  491. that may need to compute untrusted bytecode during their
  492. execution. By using pipes or other transports made available to
  493. the process as file descriptors supporting the read/write
  494. syscalls, it's possible to isolate those applications in
  495. their own address space using seccomp. Once seccomp is
  496. enabled via /proc/<pid>/seccomp, it cannot be disabled
  497. and the task is only allowed to execute a few safe syscalls
  498. defined by each seccomp mode.
  499. If unsure, say Y. Only embedded should say N here.
  500. endmenu
  501. config ISA_DMA_API
  502. bool
  503. default y
  504. menu "Bus options"
  505. config ISA
  506. bool "Support for ISA-bus hardware"
  507. depends on PPC_PREP || PPC_CHRP
  508. help
  509. Find out whether you have ISA slots on your motherboard. ISA is the
  510. name of a bus system, i.e. the way the CPU talks to the other stuff
  511. inside your box. If you have an Apple machine, say N here; if you
  512. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  513. you have an embedded board, consult your board documentation.
  514. config GENERIC_ISA_DMA
  515. bool
  516. depends on PPC64 || POWER4 || 6xx && !CPM2
  517. default y
  518. config PPC_INDIRECT_PCI
  519. bool
  520. depends on PCI
  521. default y if 40x || 44x || 85xx || 83xx
  522. default n
  523. config EISA
  524. bool
  525. config SBUS
  526. bool
  527. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  528. config MCA
  529. bool
  530. config PCI
  531. bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
  532. default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
  533. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
  534. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  535. help
  536. Find out whether your system includes a PCI bus. PCI is the name of
  537. a bus system, i.e. the way the CPU talks to the other stuff inside
  538. your box. If you say Y here, the kernel will include drivers and
  539. infrastructure code to support PCI bus devices.
  540. config PCI_DOMAINS
  541. bool
  542. default PCI
  543. config MPC83xx_PCI2
  544. bool " Supprt for 2nd PCI host controller"
  545. depends on PCI && MPC834x
  546. default y if MPC834x_SYS
  547. config PCI_QSPAN
  548. bool "QSpan PCI"
  549. depends on !4xx && !CPM2 && 8xx
  550. help
  551. Say Y here if you have a system based on a Motorola 8xx-series
  552. embedded processor with a QSPAN PCI interface, otherwise say N.
  553. config PCI_8260
  554. bool
  555. depends on PCI && 8260
  556. select PPC_INDIRECT_PCI
  557. default y
  558. config 8260_PCI9
  559. bool " Enable workaround for MPC826x erratum PCI 9"
  560. depends on PCI_8260 && !ADS8272
  561. default y
  562. choice
  563. prompt " IDMA channel for PCI 9 workaround"
  564. depends on 8260_PCI9
  565. config 8260_PCI9_IDMA1
  566. bool "IDMA1"
  567. config 8260_PCI9_IDMA2
  568. bool "IDMA2"
  569. config 8260_PCI9_IDMA3
  570. bool "IDMA3"
  571. config 8260_PCI9_IDMA4
  572. bool "IDMA4"
  573. endchoice
  574. source "drivers/pci/Kconfig"
  575. source "drivers/pcmcia/Kconfig"
  576. source "drivers/pci/hotplug/Kconfig"
  577. endmenu
  578. menu "Advanced setup"
  579. depends on PPC32
  580. config ADVANCED_OPTIONS
  581. bool "Prompt for advanced kernel configuration options"
  582. help
  583. This option will enable prompting for a variety of advanced kernel
  584. configuration options. These options can cause the kernel to not
  585. work if they are set incorrectly, but can be used to optimize certain
  586. aspects of kernel memory management.
  587. Unless you know what you are doing, say N here.
  588. comment "Default settings for advanced configuration options are used"
  589. depends on !ADVANCED_OPTIONS
  590. config HIGHMEM_START_BOOL
  591. bool "Set high memory pool address"
  592. depends on ADVANCED_OPTIONS && HIGHMEM
  593. help
  594. This option allows you to set the base address of the kernel virtual
  595. area used to map high memory pages. This can be useful in
  596. optimizing the layout of kernel virtual memory.
  597. Say N here unless you know what you are doing.
  598. config HIGHMEM_START
  599. hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
  600. default "0xfe000000"
  601. config LOWMEM_SIZE_BOOL
  602. bool "Set maximum low memory"
  603. depends on ADVANCED_OPTIONS
  604. help
  605. This option allows you to set the maximum amount of memory which
  606. will be used as "low memory", that is, memory which the kernel can
  607. access directly, without having to set up a kernel virtual mapping.
  608. This can be useful in optimizing the layout of kernel virtual
  609. memory.
  610. Say N here unless you know what you are doing.
  611. config LOWMEM_SIZE
  612. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  613. default "0x30000000"
  614. config KERNEL_START_BOOL
  615. bool "Set custom kernel base address"
  616. depends on ADVANCED_OPTIONS
  617. help
  618. This option allows you to set the kernel virtual address at which
  619. the kernel will map low memory (the kernel image will be linked at
  620. this address). This can be useful in optimizing the virtual memory
  621. layout of the system.
  622. Say N here unless you know what you are doing.
  623. config KERNEL_START
  624. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  625. default "0xc0000000"
  626. config TASK_SIZE_BOOL
  627. bool "Set custom user task size"
  628. depends on ADVANCED_OPTIONS
  629. help
  630. This option allows you to set the amount of virtual address space
  631. allocated to user tasks. This can be useful in optimizing the
  632. virtual memory layout of the system.
  633. Say N here unless you know what you are doing.
  634. config TASK_SIZE
  635. hex "Size of user task space" if TASK_SIZE_BOOL
  636. default "0x80000000"
  637. config CONSISTENT_START_BOOL
  638. bool "Set custom consistent memory pool address"
  639. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  640. help
  641. This option allows you to set the base virtual address
  642. of the the consistent memory pool. This pool of virtual
  643. memory is used to make consistent memory allocations.
  644. config CONSISTENT_START
  645. hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
  646. default "0xff100000" if NOT_COHERENT_CACHE
  647. config CONSISTENT_SIZE_BOOL
  648. bool "Set custom consistent memory pool size"
  649. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  650. help
  651. This option allows you to set the size of the the
  652. consistent memory pool. This pool of virtual memory
  653. is used to make consistent memory allocations.
  654. config CONSISTENT_SIZE
  655. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  656. default "0x00200000" if NOT_COHERENT_CACHE
  657. config BOOT_LOAD_BOOL
  658. bool "Set the boot link/load address"
  659. depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
  660. help
  661. This option allows you to set the initial load address of the zImage
  662. or zImage.initrd file. This can be useful if you are on a board
  663. which has a small amount of memory.
  664. Say N here unless you know what you are doing.
  665. config BOOT_LOAD
  666. hex "Link/load address for booting" if BOOT_LOAD_BOOL
  667. default "0x00400000" if 40x || 8xx || 8260
  668. default "0x01000000" if 44x
  669. default "0x00800000"
  670. config PIN_TLB
  671. bool "Pinned Kernel TLBs (860 ONLY)"
  672. depends on ADVANCED_OPTIONS && 8xx
  673. endmenu
  674. if PPC64
  675. config KERNEL_START
  676. hex
  677. default "0xc000000000000000"
  678. endif
  679. source "net/Kconfig"
  680. source "drivers/Kconfig"
  681. source "fs/Kconfig"
  682. # XXX source "arch/ppc/8xx_io/Kconfig"
  683. # XXX source "arch/ppc/8260_io/Kconfig"
  684. source "arch/powerpc/platforms/iseries/Kconfig"
  685. source "lib/Kconfig"
  686. source "arch/powerpc/oprofile/Kconfig"
  687. source "arch/powerpc/Kconfig.debug"
  688. source "security/Kconfig"
  689. config KEYS_COMPAT
  690. bool
  691. depends on COMPAT && KEYS
  692. default y
  693. source "crypto/Kconfig"