Kconfig 23 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. select PPC_I8259
  220. select PPC_RTAS
  221. select RTAS_ERROR_LOGGING
  222. default y
  223. config PPC_CHRP
  224. bool " Common Hardware Reference Platform (CHRP) based machines"
  225. depends on PPC_MULTIPLATFORM && PPC32
  226. select PPC_I8259
  227. select PPC_INDIRECT_PCI
  228. select PPC_RTAS
  229. default y
  230. config PPC_PMAC
  231. bool " Apple PowerMac based machines"
  232. depends on PPC_MULTIPLATFORM
  233. select PPC_INDIRECT_PCI if PPC32
  234. default y
  235. config PPC_PMAC64
  236. bool
  237. depends on PPC_PMAC && POWER4
  238. select U3_DART
  239. default y
  240. config PPC_PREP
  241. bool " PowerPC Reference Platform (PReP) based machines"
  242. depends on PPC_MULTIPLATFORM && PPC32
  243. select PPC_I8259
  244. select PPC_INDIRECT_PCI
  245. default y
  246. config PPC_MAPLE
  247. depends on PPC_MULTIPLATFORM && PPC64
  248. bool " Maple 970FX Evaluation Board"
  249. select U3_DART
  250. select MPIC_BROKEN_U3
  251. default n
  252. help
  253. This option enables support for the Maple 970FX Evaluation Board.
  254. For more informations, refer to <http://www.970eval.com>
  255. config PPC_BPA
  256. bool " Broadband Processor Architecture"
  257. depends on PPC_MULTIPLATFORM && PPC64
  258. select PPC_RTAS
  259. config PPC_OF
  260. bool
  261. depends on PPC_MULTIPLATFORM # for now
  262. default y
  263. config XICS
  264. depends on PPC_PSERIES
  265. bool
  266. default y
  267. config U3_DART
  268. bool
  269. depends on PPC_MULTIPLATFORM && PPC64
  270. default n
  271. config MPIC
  272. depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE
  273. bool
  274. default y
  275. config PPC_RTAS
  276. bool
  277. default n
  278. config RTAS_ERROR_LOGGING
  279. bool
  280. depends on PPC_RTAS
  281. default n
  282. config MPIC_BROKEN_U3
  283. bool
  284. depends on PPC_MAPLE
  285. default y
  286. config BPA_IIC
  287. depends on PPC_BPA
  288. bool
  289. default y
  290. config IBMVIO
  291. depends on PPC_PSERIES || PPC_ISERIES
  292. bool
  293. default y
  294. source "drivers/cpufreq/Kconfig"
  295. config CPU_FREQ_PMAC
  296. bool "Support for Apple PowerBooks"
  297. depends on CPU_FREQ && ADB_PMU && PPC32
  298. select CPU_FREQ_TABLE
  299. help
  300. This adds support for frequency switching on Apple PowerBooks,
  301. this currently includes some models of iBook & Titanium
  302. PowerBook.
  303. config PPC601_SYNC_FIX
  304. bool "Workarounds for PPC601 bugs"
  305. depends on 6xx && (PPC_PREP || PPC_PMAC)
  306. help
  307. Some versions of the PPC601 (the first PowerPC chip) have bugs which
  308. mean that extra synchronization instructions are required near
  309. certain instructions, typically those that make major changes to the
  310. CPU state. These extra instructions reduce performance slightly.
  311. If you say N here, these extra instructions will not be included,
  312. resulting in a kernel which will run faster but may not run at all
  313. on some systems with the PPC601 chip.
  314. If in doubt, say Y here.
  315. config TAU
  316. bool "Thermal Management Support"
  317. depends on 6xx
  318. help
  319. G3 and G4 processors have an on-chip temperature sensor called the
  320. 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
  321. temperature within 2-4 degrees Celsius. This option shows the current
  322. on-die temperature in /proc/cpuinfo if the cpu supports it.
  323. Unfortunately, on some chip revisions, this sensor is very inaccurate
  324. and in some cases, does not work at all, so don't assume the cpu
  325. temp is actually what /proc/cpuinfo says it is.
  326. config TAU_INT
  327. bool "Interrupt driven TAU driver (DANGEROUS)"
  328. depends on TAU
  329. ---help---
  330. The TAU supports an interrupt driven mode which causes an interrupt
  331. whenever the temperature goes out of range. This is the fastest way
  332. to get notified the temp has exceeded a range. With this option off,
  333. a timer is used to re-check the temperature periodically.
  334. However, on some cpus it appears that the TAU interrupt hardware
  335. is buggy and can cause a situation which would lead unexplained hard
  336. lockups.
  337. Unless you are extending the TAU driver, or enjoy kernel/hardware
  338. debugging, leave this option off.
  339. config TAU_AVERAGE
  340. bool "Average high and low temp"
  341. depends on TAU
  342. ---help---
  343. The TAU hardware can compare the temperature to an upper and lower
  344. bound. The default behavior is to show both the upper and lower
  345. bound in /proc/cpuinfo. If the range is large, the temperature is
  346. either changing a lot, or the TAU hardware is broken (likely on some
  347. G4's). If the range is small (around 4 degrees), the temperature is
  348. relatively stable. If you say Y here, a single temperature value,
  349. halfway between the upper and lower bounds, will be reported in
  350. /proc/cpuinfo.
  351. If in doubt, say N here.
  352. endmenu
  353. source arch/powerpc/platforms/embedded6xx/Kconfig
  354. source arch/powerpc/platforms/4xx/Kconfig
  355. source arch/powerpc/platforms/85xx/Kconfig
  356. source arch/powerpc/platforms/8xx/Kconfig
  357. menu "Kernel options"
  358. config HIGHMEM
  359. bool "High memory support"
  360. depends on PPC32
  361. source kernel/Kconfig.hz
  362. source kernel/Kconfig.preempt
  363. source "fs/Kconfig.binfmt"
  364. # We optimistically allocate largepages from the VM, so make the limit
  365. # large enough (16MB). This badly named config option is actually
  366. # max order + 1
  367. config FORCE_MAX_ZONEORDER
  368. int
  369. depends on PPC64
  370. default "13"
  371. config MATH_EMULATION
  372. bool "Math emulation"
  373. depends on 4xx || 8xx || E200 || E500
  374. ---help---
  375. Some PowerPC chips designed for embedded applications do not have
  376. a floating-point unit and therefore do not implement the
  377. floating-point instructions in the PowerPC instruction set. If you
  378. say Y here, the kernel will include code to emulate a floating-point
  379. unit, which will allow programs that use floating-point
  380. instructions to run.
  381. config IOMMU_VMERGE
  382. bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
  383. depends on EXPERIMENTAL && PPC64
  384. default n
  385. help
  386. Cause IO segments sent to a device for DMA to be merged virtually
  387. by the IOMMU when they happen to have been allocated contiguously.
  388. This doesn't add pressure to the IOMMU allocator. However, some
  389. drivers don't support getting large merged segments coming back
  390. from *_map_sg(). Say Y if you know the drivers you are using are
  391. properly handling this case.
  392. config HOTPLUG_CPU
  393. bool "Support for enabling/disabling CPUs"
  394. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  395. ---help---
  396. Say Y here to be able to disable and re-enable individual
  397. CPUs at runtime on SMP machines.
  398. Say N if you are unsure.
  399. config KEXEC
  400. bool "kexec system call (EXPERIMENTAL)"
  401. depends on PPC_MULTIPLATFORM && EXPERIMENTAL
  402. help
  403. kexec is a system call that implements the ability to shutdown your
  404. current kernel, and to start another kernel. It is like a reboot
  405. but it is indepedent of the system firmware. And like a reboot
  406. you can start any kernel with it, not just Linux.
  407. The name comes from the similiarity to the exec system call.
  408. It is an ongoing process to be certain the hardware in a machine
  409. is properly shutdown, so do not be surprised if this code does not
  410. initially work for you. It may help to enable device hotplugging
  411. support. As of this writing the exact hardware interface is
  412. strongly in flux, so no good recommendation can be made.
  413. config EMBEDDEDBOOT
  414. bool
  415. depends on 8xx || 8260
  416. default y
  417. config PC_KEYBOARD
  418. bool "PC PS/2 style Keyboard"
  419. depends on 4xx || CPM2
  420. config PPCBUG_NVRAM
  421. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  422. default y if PPC_PREP
  423. config IRQ_ALL_CPUS
  424. bool "Distribute interrupts on all CPUs by default"
  425. depends on SMP && !MV64360
  426. help
  427. This option gives the kernel permission to distribute IRQs across
  428. multiple CPUs. Saying N here will route all IRQs to the first
  429. CPU. Generally saying Y is safe, although some problems have been
  430. reported with SMP Power Macintoshes with this option enabled.
  431. source "arch/powerpc/platforms/pseries/Kconfig"
  432. config ARCH_SELECT_MEMORY_MODEL
  433. def_bool y
  434. depends on PPC64
  435. config ARCH_FLATMEM_ENABLE
  436. def_bool y
  437. depends on PPC64 && !NUMA
  438. config ARCH_DISCONTIGMEM_ENABLE
  439. def_bool y
  440. depends on SMP && PPC_PSERIES
  441. config ARCH_DISCONTIGMEM_DEFAULT
  442. def_bool y
  443. depends on ARCH_DISCONTIGMEM_ENABLE
  444. config ARCH_FLATMEM_ENABLE
  445. def_bool y
  446. depends on PPC64
  447. config ARCH_SPARSEMEM_ENABLE
  448. def_bool y
  449. depends on ARCH_DISCONTIGMEM_ENABLE
  450. source "mm/Kconfig"
  451. config HAVE_ARCH_EARLY_PFN_TO_NID
  452. def_bool y
  453. depends on NEED_MULTIPLE_NODES
  454. # Some NUMA nodes have memory ranges that span
  455. # other nodes. Even though a pfn is valid and
  456. # between a node's start and end pfns, it may not
  457. # reside on that node.
  458. #
  459. # This is a relatively temporary hack that should
  460. # be able to go away when sparsemem is fully in
  461. # place
  462. config NODES_SPAN_OTHER_NODES
  463. def_bool y
  464. depends on NEED_MULTIPLE_NODES
  465. config NUMA
  466. bool "NUMA support"
  467. default y if DISCONTIGMEM || SPARSEMEM
  468. config SCHED_SMT
  469. bool "SMT (Hyperthreading) scheduler support"
  470. depends on PPC64 && SMP
  471. default off
  472. help
  473. SMT scheduler support improves the CPU scheduler's decision making
  474. when dealing with POWER5 cpus at a cost of slightly increased
  475. overhead in some places. If unsure say N here.
  476. config PROC_DEVICETREE
  477. bool "Support for device tree in /proc"
  478. depends on PROC_FS
  479. help
  480. This option adds a device-tree directory under /proc which contains
  481. an image of the device tree that the kernel copies from Open
  482. Firmware or other boot firmware. If unsure, say Y here.
  483. source "arch/powerpc/platforms/prep/Kconfig"
  484. config CMDLINE_BOOL
  485. bool "Default bootloader kernel arguments"
  486. depends on !PPC_ISERIES
  487. config CMDLINE
  488. string "Initial kernel command string"
  489. depends on CMDLINE_BOOL
  490. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  491. help
  492. On some platforms, there is currently no way for the boot loader to
  493. pass arguments to the kernel. For these platforms, you can supply
  494. some command-line options at build time by entering them here. In
  495. most cases you will need to specify the root device here.
  496. if !44x || BROKEN
  497. source kernel/power/Kconfig
  498. endif
  499. config SECCOMP
  500. bool "Enable seccomp to safely compute untrusted bytecode"
  501. depends on PROC_FS
  502. default y
  503. help
  504. This kernel feature is useful for number crunching applications
  505. that may need to compute untrusted bytecode during their
  506. execution. By using pipes or other transports made available to
  507. the process as file descriptors supporting the read/write
  508. syscalls, it's possible to isolate those applications in
  509. their own address space using seccomp. Once seccomp is
  510. enabled via /proc/<pid>/seccomp, it cannot be disabled
  511. and the task is only allowed to execute a few safe syscalls
  512. defined by each seccomp mode.
  513. If unsure, say Y. Only embedded should say N here.
  514. endmenu
  515. config ISA_DMA_API
  516. bool
  517. default y
  518. menu "Bus options"
  519. config ISA
  520. bool "Support for ISA-bus hardware"
  521. depends on PPC_PREP || PPC_CHRP
  522. select PPC_I8259
  523. help
  524. Find out whether you have ISA slots on your motherboard. ISA is the
  525. name of a bus system, i.e. the way the CPU talks to the other stuff
  526. inside your box. If you have an Apple machine, say N here; if you
  527. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  528. you have an embedded board, consult your board documentation.
  529. config GENERIC_ISA_DMA
  530. bool
  531. depends on PPC64 || POWER4 || 6xx && !CPM2
  532. default y
  533. config PPC_I8259
  534. bool
  535. default y if 85xx
  536. default n
  537. config PPC_INDIRECT_PCI
  538. bool
  539. depends on PCI
  540. default y if 40x || 44x || 85xx || 83xx
  541. default n
  542. config EISA
  543. bool
  544. config SBUS
  545. bool
  546. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  547. config MCA
  548. bool
  549. config PCI
  550. bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
  551. default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
  552. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
  553. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  554. help
  555. Find out whether your system includes a PCI bus. PCI is the name of
  556. a bus system, i.e. the way the CPU talks to the other stuff inside
  557. your box. If you say Y here, the kernel will include drivers and
  558. infrastructure code to support PCI bus devices.
  559. config PCI_DOMAINS
  560. bool
  561. default PCI
  562. config MPC83xx_PCI2
  563. bool " Supprt for 2nd PCI host controller"
  564. depends on PCI && MPC834x
  565. default y if MPC834x_SYS
  566. config PCI_QSPAN
  567. bool "QSpan PCI"
  568. depends on !4xx && !CPM2 && 8xx
  569. select PPC_I8259
  570. help
  571. Say Y here if you have a system based on a Motorola 8xx-series
  572. embedded processor with a QSPAN PCI interface, otherwise say N.
  573. config PCI_8260
  574. bool
  575. depends on PCI && 8260
  576. select PPC_INDIRECT_PCI
  577. default y
  578. config 8260_PCI9
  579. bool " Enable workaround for MPC826x erratum PCI 9"
  580. depends on PCI_8260 && !ADS8272
  581. default y
  582. choice
  583. prompt " IDMA channel for PCI 9 workaround"
  584. depends on 8260_PCI9
  585. config 8260_PCI9_IDMA1
  586. bool "IDMA1"
  587. config 8260_PCI9_IDMA2
  588. bool "IDMA2"
  589. config 8260_PCI9_IDMA3
  590. bool "IDMA3"
  591. config 8260_PCI9_IDMA4
  592. bool "IDMA4"
  593. endchoice
  594. source "drivers/pci/Kconfig"
  595. source "drivers/pcmcia/Kconfig"
  596. source "drivers/pci/hotplug/Kconfig"
  597. endmenu
  598. menu "Advanced setup"
  599. depends on PPC32
  600. config ADVANCED_OPTIONS
  601. bool "Prompt for advanced kernel configuration options"
  602. help
  603. This option will enable prompting for a variety of advanced kernel
  604. configuration options. These options can cause the kernel to not
  605. work if they are set incorrectly, but can be used to optimize certain
  606. aspects of kernel memory management.
  607. Unless you know what you are doing, say N here.
  608. comment "Default settings for advanced configuration options are used"
  609. depends on !ADVANCED_OPTIONS
  610. config HIGHMEM_START_BOOL
  611. bool "Set high memory pool address"
  612. depends on ADVANCED_OPTIONS && HIGHMEM
  613. help
  614. This option allows you to set the base address of the kernel virtual
  615. area used to map high memory pages. This can be useful in
  616. optimizing the layout of kernel virtual memory.
  617. Say N here unless you know what you are doing.
  618. config HIGHMEM_START
  619. hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
  620. default "0xfe000000"
  621. config LOWMEM_SIZE_BOOL
  622. bool "Set maximum low memory"
  623. depends on ADVANCED_OPTIONS
  624. help
  625. This option allows you to set the maximum amount of memory which
  626. will be used as "low memory", that is, memory which the kernel can
  627. access directly, without having to set up a kernel virtual mapping.
  628. This can be useful in optimizing the layout of kernel virtual
  629. memory.
  630. Say N here unless you know what you are doing.
  631. config LOWMEM_SIZE
  632. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  633. default "0x30000000"
  634. config KERNEL_START_BOOL
  635. bool "Set custom kernel base address"
  636. depends on ADVANCED_OPTIONS
  637. help
  638. This option allows you to set the kernel virtual address at which
  639. the kernel will map low memory (the kernel image will be linked at
  640. this address). This can be useful in optimizing the virtual memory
  641. layout of the system.
  642. Say N here unless you know what you are doing.
  643. config KERNEL_START
  644. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  645. default "0xc0000000"
  646. config TASK_SIZE_BOOL
  647. bool "Set custom user task size"
  648. depends on ADVANCED_OPTIONS
  649. help
  650. This option allows you to set the amount of virtual address space
  651. allocated to user tasks. This can be useful in optimizing the
  652. virtual memory layout of the system.
  653. Say N here unless you know what you are doing.
  654. config TASK_SIZE
  655. hex "Size of user task space" if TASK_SIZE_BOOL
  656. default "0x80000000"
  657. config CONSISTENT_START_BOOL
  658. bool "Set custom consistent memory pool address"
  659. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  660. help
  661. This option allows you to set the base virtual address
  662. of the the consistent memory pool. This pool of virtual
  663. memory is used to make consistent memory allocations.
  664. config CONSISTENT_START
  665. hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
  666. default "0xff100000" if NOT_COHERENT_CACHE
  667. config CONSISTENT_SIZE_BOOL
  668. bool "Set custom consistent memory pool size"
  669. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  670. help
  671. This option allows you to set the size of the the
  672. consistent memory pool. This pool of virtual memory
  673. is used to make consistent memory allocations.
  674. config CONSISTENT_SIZE
  675. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  676. default "0x00200000" if NOT_COHERENT_CACHE
  677. config BOOT_LOAD_BOOL
  678. bool "Set the boot link/load address"
  679. depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
  680. help
  681. This option allows you to set the initial load address of the zImage
  682. or zImage.initrd file. This can be useful if you are on a board
  683. which has a small amount of memory.
  684. Say N here unless you know what you are doing.
  685. config BOOT_LOAD
  686. hex "Link/load address for booting" if BOOT_LOAD_BOOL
  687. default "0x00400000" if 40x || 8xx || 8260
  688. default "0x01000000" if 44x
  689. default "0x00800000"
  690. config PIN_TLB
  691. bool "Pinned Kernel TLBs (860 ONLY)"
  692. depends on ADVANCED_OPTIONS && 8xx
  693. endmenu
  694. if PPC64
  695. config KERNEL_START
  696. hex
  697. default "0xc000000000000000"
  698. endif
  699. source "net/Kconfig"
  700. source "drivers/Kconfig"
  701. source "fs/Kconfig"
  702. # XXX source "arch/ppc/8xx_io/Kconfig"
  703. # XXX source "arch/ppc/8260_io/Kconfig"
  704. source "arch/powerpc/platforms/iseries/Kconfig"
  705. source "lib/Kconfig"
  706. source "arch/powerpc/oprofile/Kconfig"
  707. source "arch/powerpc/Kconfig.debug"
  708. source "security/Kconfig"
  709. config KEYS_COMPAT
  710. bool
  711. depends on COMPAT && KEYS
  712. default y
  713. source "crypto/Kconfig"