Kconfig 24 KB

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  1. source "arch/powerpc/platforms/Kconfig.cputype"
  2. config PPC32
  3. bool
  4. default y if !PPC64
  5. config 32BIT
  6. bool
  7. default y if PPC32
  8. config 64BIT
  9. bool
  10. default y if PPC64
  11. config WORD_SIZE
  12. int
  13. default 64 if PPC64
  14. default 32 if !PPC64
  15. config ARCH_PHYS_ADDR_T_64BIT
  16. def_bool PPC64 || PHYS_64BIT
  17. config ARCH_DMA_ADDR_T_64BIT
  18. def_bool ARCH_PHYS_ADDR_T_64BIT
  19. config MMU
  20. bool
  21. default y
  22. config GENERIC_CMOS_UPDATE
  23. def_bool y
  24. config GENERIC_TIME_VSYSCALL
  25. def_bool y
  26. config GENERIC_CLOCKEVENTS
  27. def_bool y
  28. config HAVE_SETUP_PER_CPU_AREA
  29. def_bool PPC64
  30. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  31. def_bool PPC64
  32. config NR_IRQS
  33. int "Number of virtual interrupt numbers"
  34. range 32 32768
  35. default "512"
  36. help
  37. This defines the number of virtual interrupt numbers the kernel
  38. can manage. Virtual interrupt numbers are what you see in
  39. /proc/interrupts. If you configure your system to have too few,
  40. drivers will fail to load or worse - handle with care.
  41. config STACKTRACE_SUPPORT
  42. bool
  43. default y
  44. config HAVE_LATENCYTOP_SUPPORT
  45. def_bool y
  46. config TRACE_IRQFLAGS_SUPPORT
  47. bool
  48. default y
  49. config LOCKDEP_SUPPORT
  50. bool
  51. default y
  52. config RWSEM_GENERIC_SPINLOCK
  53. bool
  54. config RWSEM_XCHGADD_ALGORITHM
  55. bool
  56. default y
  57. config GENERIC_LOCKBREAK
  58. bool
  59. default y
  60. depends on SMP && PREEMPT
  61. config ARCH_HAS_ILOG2_U32
  62. bool
  63. default y
  64. config ARCH_HAS_ILOG2_U64
  65. bool
  66. default y if 64BIT
  67. config GENERIC_HWEIGHT
  68. bool
  69. default y
  70. config GENERIC_FIND_NEXT_BIT
  71. bool
  72. default y
  73. config GENERIC_GPIO
  74. bool
  75. help
  76. Generic GPIO API support
  77. config ARCH_NO_VIRT_TO_BUS
  78. def_bool PPC64
  79. config PPC
  80. bool
  81. default y
  82. select OF
  83. select OF_EARLY_FLATTREE
  84. select HAVE_FTRACE_MCOUNT_RECORD
  85. select HAVE_DYNAMIC_FTRACE
  86. select HAVE_FUNCTION_TRACER
  87. select HAVE_FUNCTION_GRAPH_TRACER
  88. select ARCH_WANT_OPTIONAL_GPIOLIB
  89. select HAVE_IDE
  90. select HAVE_IOREMAP_PROT
  91. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  92. select HAVE_KPROBES
  93. select HAVE_ARCH_KGDB
  94. select HAVE_KRETPROBES
  95. select HAVE_ARCH_TRACEHOOK
  96. select HAVE_MEMBLOCK
  97. select HAVE_DMA_ATTRS
  98. select HAVE_DMA_API_DEBUG
  99. select USE_GENERIC_SMP_HELPERS if SMP
  100. select HAVE_OPROFILE
  101. select HAVE_SYSCALL_WRAPPERS if PPC64
  102. select GENERIC_ATOMIC64 if PPC32
  103. select HAVE_IRQ_WORK
  104. select HAVE_PERF_EVENTS
  105. select HAVE_REGS_AND_STACK_ACCESS_API
  106. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  107. select HAVE_GENERIC_HARDIRQS
  108. select HAVE_SPARSE_IRQ
  109. select IRQ_PER_CPU
  110. config EARLY_PRINTK
  111. bool
  112. default y
  113. config COMPAT
  114. bool
  115. default y if PPC64
  116. select COMPAT_BINFMT_ELF
  117. config SYSVIPC_COMPAT
  118. bool
  119. depends on COMPAT && SYSVIPC
  120. default y
  121. # All PPC32s use generic nvram driver through ppc_md
  122. config GENERIC_NVRAM
  123. bool
  124. default y if PPC32
  125. config SCHED_OMIT_FRAME_POINTER
  126. bool
  127. default y
  128. config ARCH_MAY_HAVE_PC_FDC
  129. bool
  130. default !PPC_PSERIES || PCI
  131. config PPC_OF
  132. def_bool y
  133. config PPC_UDBG_16550
  134. bool
  135. default n
  136. config GENERIC_TBSYNC
  137. bool
  138. default y if PPC32 && SMP
  139. default n
  140. config AUDIT_ARCH
  141. bool
  142. default y
  143. config GENERIC_BUG
  144. bool
  145. default y
  146. depends on BUG
  147. config SYS_SUPPORTS_APM_EMULATION
  148. default y if PMAC_APM_EMU
  149. bool
  150. config DEFAULT_UIMAGE
  151. bool
  152. help
  153. Used to allow a board to specify it wants a uImage built by default
  154. default n
  155. config REDBOOT
  156. bool
  157. config ARCH_HIBERNATION_POSSIBLE
  158. bool
  159. default y
  160. config ARCH_SUSPEND_POSSIBLE
  161. def_bool y
  162. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  163. PPC_85xx || PPC_86xx || PPC_PSERIES || 44x || 40x
  164. config PPC_DCR_NATIVE
  165. bool
  166. default n
  167. config PPC_DCR_MMIO
  168. bool
  169. default n
  170. config PPC_DCR
  171. bool
  172. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  173. default y
  174. config PPC_OF_PLATFORM_PCI
  175. bool
  176. depends on PCI
  177. depends on PPC64 # not supported on 32 bits yet
  178. default n
  179. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  180. def_bool y
  181. config PPC_ADV_DEBUG_REGS
  182. bool
  183. depends on 40x || BOOKE
  184. default y
  185. config PPC_ADV_DEBUG_IACS
  186. int
  187. depends on PPC_ADV_DEBUG_REGS
  188. default 4 if 44x
  189. default 2
  190. config PPC_ADV_DEBUG_DACS
  191. int
  192. depends on PPC_ADV_DEBUG_REGS
  193. default 2
  194. config PPC_ADV_DEBUG_DVCS
  195. int
  196. depends on PPC_ADV_DEBUG_REGS
  197. default 2 if 44x
  198. default 0
  199. config PPC_ADV_DEBUG_DAC_RANGE
  200. bool
  201. depends on PPC_ADV_DEBUG_REGS && 44x
  202. default y
  203. source "init/Kconfig"
  204. source "kernel/Kconfig.freezer"
  205. source "arch/powerpc/sysdev/Kconfig"
  206. source "arch/powerpc/platforms/Kconfig"
  207. menu "Kernel options"
  208. config HIGHMEM
  209. bool "High memory support"
  210. depends on PPC32
  211. source kernel/time/Kconfig
  212. source kernel/Kconfig.hz
  213. source kernel/Kconfig.preempt
  214. source "fs/Kconfig.binfmt"
  215. config HUGETLB_PAGE_SIZE_VARIABLE
  216. bool
  217. depends on HUGETLB_PAGE
  218. default y
  219. config MATH_EMULATION
  220. bool "Math emulation"
  221. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  222. ---help---
  223. Some PowerPC chips designed for embedded applications do not have
  224. a floating-point unit and therefore do not implement the
  225. floating-point instructions in the PowerPC instruction set. If you
  226. say Y here, the kernel will include code to emulate a floating-point
  227. unit, which will allow programs that use floating-point
  228. instructions to run.
  229. config 8XX_MINIMAL_FPEMU
  230. bool "Minimal math emulation for 8xx"
  231. depends on 8xx && !MATH_EMULATION
  232. help
  233. Older arch/ppc kernels still emulated a few floating point
  234. instructions such as load and store, even when full math
  235. emulation is disabled. Say "Y" here if you want to preserve
  236. this behavior.
  237. It is recommended that you build a soft-float userspace instead.
  238. config IOMMU_HELPER
  239. def_bool PPC64
  240. config SWIOTLB
  241. bool "SWIOTLB support"
  242. default n
  243. select IOMMU_HELPER
  244. ---help---
  245. Support for IO bounce buffering for systems without an IOMMU.
  246. This allows us to DMA to the full physical address space on
  247. platforms where the size of a physical address is larger
  248. than the bus address. Not all platforms support this.
  249. config HOTPLUG_CPU
  250. bool "Support for enabling/disabling CPUs"
  251. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  252. ---help---
  253. Say Y here to be able to disable and re-enable individual
  254. CPUs at runtime on SMP machines.
  255. Say N if you are unsure.
  256. config ARCH_CPU_PROBE_RELEASE
  257. def_bool y
  258. depends on HOTPLUG_CPU
  259. config ARCH_ENABLE_MEMORY_HOTPLUG
  260. def_bool y
  261. config ARCH_HAS_WALK_MEMORY
  262. def_bool y
  263. config ARCH_ENABLE_MEMORY_HOTREMOVE
  264. def_bool y
  265. config KEXEC
  266. bool "kexec system call (EXPERIMENTAL)"
  267. depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL
  268. help
  269. kexec is a system call that implements the ability to shutdown your
  270. current kernel, and to start another kernel. It is like a reboot
  271. but it is independent of the system firmware. And like a reboot
  272. you can start any kernel with it, not just Linux.
  273. The name comes from the similarity to the exec system call.
  274. It is an ongoing process to be certain the hardware in a machine
  275. is properly shutdown, so do not be surprised if this code does not
  276. initially work for you. It may help to enable device hotplugging
  277. support. As of this writing the exact hardware interface is
  278. strongly in flux, so no good recommendation can be made.
  279. config CRASH_DUMP
  280. bool "Build a kdump crash kernel"
  281. depends on PPC64 || 6xx || FSL_BOOKE
  282. select RELOCATABLE if PPC64 || FSL_BOOKE
  283. help
  284. Build a kernel suitable for use as a kdump capture kernel.
  285. The same kernel binary can be used as production kernel and dump
  286. capture kernel.
  287. config PHYP_DUMP
  288. bool "Hypervisor-assisted dump (EXPERIMENTAL)"
  289. depends on PPC_PSERIES && EXPERIMENTAL
  290. help
  291. Hypervisor-assisted dump is meant to be a kdump replacement
  292. offering robustness and speed not possible without system
  293. hypervisor assistance.
  294. If unsure, say "N"
  295. config PPCBUG_NVRAM
  296. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  297. default y if PPC_PREP
  298. config IRQ_ALL_CPUS
  299. bool "Distribute interrupts on all CPUs by default"
  300. depends on SMP && !MV64360
  301. help
  302. This option gives the kernel permission to distribute IRQs across
  303. multiple CPUs. Saying N here will route all IRQs to the first
  304. CPU. Generally saying Y is safe, although some problems have been
  305. reported with SMP Power Macintoshes with this option enabled.
  306. config NUMA
  307. bool "NUMA support"
  308. depends on PPC64
  309. default y if SMP && PPC_PSERIES
  310. config NODES_SHIFT
  311. int
  312. default "8" if PPC64
  313. default "4"
  314. depends on NEED_MULTIPLE_NODES
  315. config MAX_ACTIVE_REGIONS
  316. int
  317. default "256" if PPC64
  318. default "32"
  319. config ARCH_SELECT_MEMORY_MODEL
  320. def_bool y
  321. depends on PPC64
  322. config ARCH_FLATMEM_ENABLE
  323. def_bool y
  324. depends on (PPC64 && !NUMA) || PPC32
  325. config ARCH_SPARSEMEM_ENABLE
  326. def_bool y
  327. depends on PPC64
  328. select SPARSEMEM_VMEMMAP_ENABLE
  329. config ARCH_SPARSEMEM_DEFAULT
  330. def_bool y
  331. depends on (SMP && PPC_PSERIES) || PPC_PS3
  332. config ARCH_POPULATES_NODE_MAP
  333. def_bool y
  334. config SYS_SUPPORTS_HUGETLBFS
  335. def_bool y
  336. depends on PPC_BOOK3S_64
  337. source "mm/Kconfig"
  338. config ARCH_MEMORY_PROBE
  339. def_bool y
  340. depends on MEMORY_HOTPLUG
  341. # Some NUMA nodes have memory ranges that span
  342. # other nodes. Even though a pfn is valid and
  343. # between a node's start and end pfns, it may not
  344. # reside on that node. See memmap_init_zone()
  345. # for details.
  346. config NODES_SPAN_OTHER_NODES
  347. def_bool y
  348. depends on NEED_MULTIPLE_NODES
  349. config PPC_HAS_HASH_64K
  350. bool
  351. depends on PPC64
  352. default n
  353. config STDBINUTILS
  354. bool "Using standard binutils settings"
  355. depends on 44x
  356. default y
  357. help
  358. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  359. Note, that kernel will be able to run only those applications,
  360. which had been compiled using binutils later than 2.17.50.0.3 with
  361. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  362. the older binutils, you can patch them with a trivial patch, which
  363. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  364. choice
  365. prompt "Page size"
  366. default PPC_4K_PAGES
  367. help
  368. Select the kernel logical page size. Increasing the page size
  369. will reduce software overhead at each page boundary, allow
  370. hardware prefetch mechanisms to be more effective, and allow
  371. larger dma transfers increasing IO efficiency and reducing
  372. overhead. However the utilization of memory will increase.
  373. For example, each cached file will using a multiple of the
  374. page size to hold its contents and the difference between the
  375. end of file and the end of page is wasted.
  376. Some dedicated systems, such as software raid serving with
  377. accelerated calculations, have shown significant increases.
  378. If you configure a 64 bit kernel for 64k pages but the
  379. processor does not support them, then the kernel will simulate
  380. them with 4k pages, loading them on demand, but with the
  381. reduced software overhead and larger internal fragmentation.
  382. For the 32 bit kernel, a large page option will not be offered
  383. unless it is supported by the configured processor.
  384. If unsure, choose 4K_PAGES.
  385. config PPC_4K_PAGES
  386. bool "4k page size"
  387. config PPC_16K_PAGES
  388. bool "16k page size" if 44x
  389. config PPC_64K_PAGES
  390. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  391. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  392. config PPC_256K_PAGES
  393. bool "256k page size" if 44x
  394. depends on !STDBINUTILS
  395. help
  396. Make the page size 256k.
  397. As the ELF standard only requires alignment to support page
  398. sizes up to 64k, you will need to compile all of your user
  399. space applications with a non-standard binutils settings
  400. (see the STDBINUTILS description for details).
  401. Say N unless you know what you are doing.
  402. endchoice
  403. config FORCE_MAX_ZONEORDER
  404. int "Maximum zone order"
  405. range 9 64 if PPC64 && PPC_64K_PAGES
  406. default "9" if PPC64 && PPC_64K_PAGES
  407. range 13 64 if PPC64 && !PPC_64K_PAGES
  408. default "13" if PPC64 && !PPC_64K_PAGES
  409. range 9 64 if PPC32 && PPC_16K_PAGES
  410. default "9" if PPC32 && PPC_16K_PAGES
  411. range 7 64 if PPC32 && PPC_64K_PAGES
  412. default "7" if PPC32 && PPC_64K_PAGES
  413. range 5 64 if PPC32 && PPC_256K_PAGES
  414. default "5" if PPC32 && PPC_256K_PAGES
  415. range 11 64
  416. default "11"
  417. help
  418. The kernel memory allocator divides physically contiguous memory
  419. blocks into "zones", where each zone is a power of two number of
  420. pages. This option selects the largest power of two that the kernel
  421. keeps in the memory allocator. If you need to allocate very large
  422. blocks of physically contiguous memory, then you may need to
  423. increase this value.
  424. This config option is actually maximum order plus one. For example,
  425. a value of 11 means that the largest free memory block is 2^10 pages.
  426. The page size is not necessarily 4KB. For example, on 64-bit
  427. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  428. this in mind when choosing a value for this option.
  429. config PPC_SUBPAGE_PROT
  430. bool "Support setting protections for 4k subpages"
  431. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  432. help
  433. This option adds support for a system call to allow user programs
  434. to set access permissions (read/write, readonly, or no access)
  435. on the 4k subpages of each 64k page.
  436. config SCHED_SMT
  437. bool "SMT (Hyperthreading) scheduler support"
  438. depends on PPC64 && SMP
  439. help
  440. SMT scheduler support improves the CPU scheduler's decision making
  441. when dealing with POWER5 cpus at a cost of slightly increased
  442. overhead in some places. If unsure say N here.
  443. config CMDLINE_BOOL
  444. bool "Default bootloader kernel arguments"
  445. config CMDLINE
  446. string "Initial kernel command string"
  447. depends on CMDLINE_BOOL
  448. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  449. help
  450. On some platforms, there is currently no way for the boot loader to
  451. pass arguments to the kernel. For these platforms, you can supply
  452. some command-line options at build time by entering them here. In
  453. most cases you will need to specify the root device here.
  454. config EXTRA_TARGETS
  455. string "Additional default image types"
  456. help
  457. List additional targets to be built by the bootwrapper here (separated
  458. by spaces). This is useful for targets that depend of device tree
  459. files in the .dts directory.
  460. Targets in this list will be build as part of the default build
  461. target, or when the user does a 'make zImage' or a
  462. 'make zImage.initrd'.
  463. If unsure, leave blank
  464. config ARCH_WANTS_FREEZER_CONTROL
  465. def_bool y
  466. depends on ADB_PMU
  467. source kernel/power/Kconfig
  468. config SECCOMP
  469. bool "Enable seccomp to safely compute untrusted bytecode"
  470. depends on PROC_FS
  471. default y
  472. help
  473. This kernel feature is useful for number crunching applications
  474. that may need to compute untrusted bytecode during their
  475. execution. By using pipes or other transports made available to
  476. the process as file descriptors supporting the read/write
  477. syscalls, it's possible to isolate those applications in
  478. their own address space using seccomp. Once seccomp is
  479. enabled via /proc/<pid>/seccomp, it cannot be disabled
  480. and the task is only allowed to execute a few safe syscalls
  481. defined by each seccomp mode.
  482. If unsure, say Y. Only embedded should say N here.
  483. endmenu
  484. config ISA_DMA_API
  485. bool
  486. default !PPC_ISERIES || PCI
  487. menu "Bus options"
  488. config ISA
  489. bool "Support for ISA-bus hardware"
  490. depends on PPC_PREP || PPC_CHRP
  491. select PPC_I8259
  492. help
  493. Find out whether you have ISA slots on your motherboard. ISA is the
  494. name of a bus system, i.e. the way the CPU talks to the other stuff
  495. inside your box. If you have an Apple machine, say N here; if you
  496. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  497. you have an embedded board, consult your board documentation.
  498. config ZONE_DMA
  499. bool
  500. default y
  501. config NEED_DMA_MAP_STATE
  502. def_bool (PPC64 || NOT_COHERENT_CACHE)
  503. config NEED_SG_DMA_LENGTH
  504. def_bool y
  505. config GENERIC_ISA_DMA
  506. bool
  507. depends on ISA_DMA_API
  508. default y
  509. config PPC_INDIRECT_PCI
  510. bool
  511. depends on PCI
  512. default y if 40x || 44x
  513. default n
  514. config EISA
  515. bool
  516. config SBUS
  517. bool
  518. config FSL_SOC
  519. bool
  520. config FSL_PCI
  521. bool
  522. select PPC_INDIRECT_PCI
  523. select PCI_QUIRKS
  524. config FSL_PMC
  525. bool
  526. default y
  527. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  528. help
  529. Freescale MPC85xx/MPC86xx power management controller support
  530. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  531. config PPC4xx_CPM
  532. bool
  533. default y
  534. depends on SUSPEND && (44x || 40x)
  535. help
  536. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  537. It also enables support for two different idle states (idle-wait
  538. and idle-doze).
  539. config 4xx_SOC
  540. bool
  541. config FSL_LBC
  542. bool "Freescale Local Bus support"
  543. depends on FSL_SOC
  544. help
  545. Enables reporting of errors from the Freescale local bus
  546. controller. Also contains some common code used by
  547. drivers for specific local bus peripherals.
  548. config FSL_GTM
  549. bool
  550. depends on PPC_83xx || QUICC_ENGINE || CPM2
  551. help
  552. Freescale General-purpose Timers support
  553. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  554. config MCA
  555. bool
  556. # Platforms that what PCI turned unconditionally just do select PCI
  557. # in their config node. Platforms that want to choose at config
  558. # time should select PPC_PCI_CHOICE
  559. config PPC_PCI_CHOICE
  560. bool
  561. config PCI
  562. bool "PCI support" if PPC_PCI_CHOICE
  563. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  564. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  565. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  566. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  567. select ARCH_SUPPORTS_MSI
  568. help
  569. Find out whether your system includes a PCI bus. PCI is the name of
  570. a bus system, i.e. the way the CPU talks to the other stuff inside
  571. your box. If you say Y here, the kernel will include drivers and
  572. infrastructure code to support PCI bus devices.
  573. config PCI_DOMAINS
  574. def_bool PCI
  575. config PCI_SYSCALL
  576. def_bool PCI
  577. config PCI_QSPAN
  578. bool "QSpan PCI"
  579. depends on !4xx && !CPM2 && 8xx
  580. select PPC_I8259
  581. help
  582. Say Y here if you have a system based on a Motorola 8xx-series
  583. embedded processor with a QSPAN PCI interface, otherwise say N.
  584. config PCI_8260
  585. bool
  586. depends on PCI && 8260
  587. select PPC_INDIRECT_PCI
  588. default y
  589. config 8260_PCI9
  590. bool "Enable workaround for MPC826x erratum PCI 9"
  591. depends on PCI_8260 && !8272
  592. default y
  593. choice
  594. prompt "IDMA channel for PCI 9 workaround"
  595. depends on 8260_PCI9
  596. config 8260_PCI9_IDMA1
  597. bool "IDMA1"
  598. config 8260_PCI9_IDMA2
  599. bool "IDMA2"
  600. config 8260_PCI9_IDMA3
  601. bool "IDMA3"
  602. config 8260_PCI9_IDMA4
  603. bool "IDMA4"
  604. endchoice
  605. source "drivers/pci/pcie/Kconfig"
  606. source "drivers/pci/Kconfig"
  607. source "drivers/pcmcia/Kconfig"
  608. source "drivers/pci/hotplug/Kconfig"
  609. config HAS_RAPIDIO
  610. bool
  611. default n
  612. config RAPIDIO
  613. bool "RapidIO support"
  614. depends on HAS_RAPIDIO
  615. help
  616. If you say Y here, the kernel will include drivers and
  617. infrastructure code to support RapidIO interconnect devices.
  618. source "drivers/rapidio/Kconfig"
  619. endmenu
  620. menu "Advanced setup"
  621. depends on PPC32
  622. config ADVANCED_OPTIONS
  623. bool "Prompt for advanced kernel configuration options"
  624. help
  625. This option will enable prompting for a variety of advanced kernel
  626. configuration options. These options can cause the kernel to not
  627. work if they are set incorrectly, but can be used to optimize certain
  628. aspects of kernel memory management.
  629. Unless you know what you are doing, say N here.
  630. comment "Default settings for advanced configuration options are used"
  631. depends on !ADVANCED_OPTIONS
  632. config LOWMEM_SIZE_BOOL
  633. bool "Set maximum low memory"
  634. depends on ADVANCED_OPTIONS
  635. help
  636. This option allows you to set the maximum amount of memory which
  637. will be used as "low memory", that is, memory which the kernel can
  638. access directly, without having to set up a kernel virtual mapping.
  639. This can be useful in optimizing the layout of kernel virtual
  640. memory.
  641. Say N here unless you know what you are doing.
  642. config LOWMEM_SIZE
  643. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  644. default "0x30000000"
  645. config LOWMEM_CAM_NUM_BOOL
  646. bool "Set number of CAMs to use to map low memory"
  647. depends on ADVANCED_OPTIONS && FSL_BOOKE
  648. help
  649. This option allows you to set the maximum number of CAM slots that
  650. will be used to map low memory. There are a limited number of slots
  651. available and even more limited number that will fit in the L1 MMU.
  652. However, using more entries will allow mapping more low memory. This
  653. can be useful in optimizing the layout of kernel virtual memory.
  654. Say N here unless you know what you are doing.
  655. config LOWMEM_CAM_NUM
  656. depends on FSL_BOOKE
  657. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  658. default 3
  659. config RELOCATABLE
  660. bool "Build a relocatable kernel (EXPERIMENTAL)"
  661. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  662. help
  663. This builds a kernel image that is capable of running at the
  664. location the kernel is loaded at (some alignment restrictions may
  665. exist).
  666. One use is for the kexec on panic case where the recovery kernel
  667. must live at a different physical address than the primary
  668. kernel.
  669. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  670. it has been loaded at and the compile time physical addresses
  671. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  672. setting can still be useful to bootwrappers that need to know the
  673. load location of the kernel (eg. u-boot/mkimage).
  674. config PAGE_OFFSET_BOOL
  675. bool "Set custom page offset address"
  676. depends on ADVANCED_OPTIONS
  677. help
  678. This option allows you to set the kernel virtual address at which
  679. the kernel will map low memory. This can be useful in optimizing
  680. the virtual memory layout of the system.
  681. Say N here unless you know what you are doing.
  682. config PAGE_OFFSET
  683. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  684. default "0xc0000000"
  685. config KERNEL_START_BOOL
  686. bool "Set custom kernel base address"
  687. depends on ADVANCED_OPTIONS
  688. help
  689. This option allows you to set the kernel virtual address at which
  690. the kernel will be loaded. Normally this should match PAGE_OFFSET
  691. however there are times (like kdump) that one might not want them
  692. to be the same.
  693. Say N here unless you know what you are doing.
  694. config KERNEL_START
  695. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  696. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  697. default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
  698. default "0xc0000000"
  699. config PHYSICAL_START_BOOL
  700. bool "Set physical address where the kernel is loaded"
  701. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  702. help
  703. This gives the physical address where the kernel is loaded.
  704. Say N here unless you know what you are doing.
  705. config PHYSICAL_START
  706. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  707. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
  708. default "0x00000000"
  709. config PHYSICAL_ALIGN
  710. hex
  711. default "0x04000000" if FSL_BOOKE
  712. help
  713. This value puts the alignment restrictions on physical address
  714. where kernel is loaded and run from. Kernel is compiled for an
  715. address which meets above alignment restriction.
  716. config TASK_SIZE_BOOL
  717. bool "Set custom user task size"
  718. depends on ADVANCED_OPTIONS
  719. help
  720. This option allows you to set the amount of virtual address space
  721. allocated to user tasks. This can be useful in optimizing the
  722. virtual memory layout of the system.
  723. Say N here unless you know what you are doing.
  724. config TASK_SIZE
  725. hex "Size of user task space" if TASK_SIZE_BOOL
  726. default "0x80000000" if PPC_PREP || PPC_8xx
  727. default "0xc0000000"
  728. config CONSISTENT_SIZE_BOOL
  729. bool "Set custom consistent memory pool size"
  730. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  731. help
  732. This option allows you to set the size of the
  733. consistent memory pool. This pool of virtual memory
  734. is used to make consistent memory allocations.
  735. config CONSISTENT_SIZE
  736. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  737. default "0x00200000" if NOT_COHERENT_CACHE
  738. config PIN_TLB
  739. bool "Pinned Kernel TLBs (860 ONLY)"
  740. depends on ADVANCED_OPTIONS && 8xx
  741. endmenu
  742. if PPC64
  743. config RELOCATABLE
  744. bool "Build a relocatable kernel"
  745. help
  746. This builds a kernel image that is capable of running anywhere
  747. in the RMA (real memory area) at any 16k-aligned base address.
  748. The kernel is linked as a position-independent executable (PIE)
  749. and contains dynamic relocations which are processed early
  750. in the bootup process.
  751. One use is for the kexec on panic case where the recovery kernel
  752. must live at a different physical address than the primary
  753. kernel.
  754. config PAGE_OFFSET
  755. hex
  756. default "0xc000000000000000"
  757. config KERNEL_START
  758. hex
  759. default "0xc000000000000000"
  760. config PHYSICAL_START
  761. hex
  762. default "0x00000000"
  763. endif
  764. source "net/Kconfig"
  765. source "drivers/Kconfig"
  766. source "fs/Kconfig"
  767. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  768. source "lib/Kconfig"
  769. source "arch/powerpc/Kconfig.debug"
  770. source "security/Kconfig"
  771. config KEYS_COMPAT
  772. bool
  773. depends on COMPAT && KEYS
  774. default y
  775. source "crypto/Kconfig"
  776. config PPC_CLOCK
  777. bool
  778. default n
  779. select HAVE_CLK
  780. config PPC_LIB_RHEAP
  781. bool
  782. source "arch/powerpc/kvm/Kconfig"