Kconfig 25 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_GPIO
  71. bool
  72. help
  73. Generic GPIO API support
  74. config ARCH_NO_VIRT_TO_BUS
  75. def_bool PPC64
  76. config PPC
  77. bool
  78. default y
  79. select OF
  80. select OF_EARLY_FLATTREE
  81. select HAVE_FTRACE_MCOUNT_RECORD
  82. select HAVE_DYNAMIC_FTRACE
  83. select HAVE_FUNCTION_TRACER
  84. select HAVE_FUNCTION_GRAPH_TRACER
  85. select ARCH_WANT_OPTIONAL_GPIOLIB
  86. select HAVE_IDE
  87. select HAVE_IOREMAP_PROT
  88. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  89. select HAVE_KPROBES
  90. select HAVE_ARCH_KGDB
  91. select HAVE_KRETPROBES
  92. select HAVE_ARCH_TRACEHOOK
  93. select HAVE_MEMBLOCK
  94. select HAVE_DMA_ATTRS
  95. select HAVE_DMA_API_DEBUG
  96. select USE_GENERIC_SMP_HELPERS if SMP
  97. select HAVE_OPROFILE
  98. select HAVE_SYSCALL_WRAPPERS if PPC64
  99. select GENERIC_ATOMIC64 if PPC32
  100. select HAVE_IRQ_WORK
  101. select HAVE_PERF_EVENTS
  102. select HAVE_REGS_AND_STACK_ACCESS_API
  103. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  104. select HAVE_GENERIC_HARDIRQS
  105. select HAVE_SPARSE_IRQ
  106. select IRQ_PER_CPU
  107. select GENERIC_IRQ_SHOW
  108. select GENERIC_IRQ_SHOW_LEVEL
  109. select HAVE_RCU_TABLE_FREE if SMP
  110. select HAVE_SYSCALL_TRACEPOINTS
  111. select HAVE_BPF_JIT if (PPC64 && NET)
  112. select HAVE_ARCH_JUMP_LABEL
  113. select ARCH_HAVE_NMI_SAFE_CMPXCHG
  114. config EARLY_PRINTK
  115. bool
  116. default y
  117. config COMPAT
  118. bool
  119. default y if PPC64
  120. select COMPAT_BINFMT_ELF
  121. config SYSVIPC_COMPAT
  122. bool
  123. depends on COMPAT && SYSVIPC
  124. default y
  125. # All PPC32s use generic nvram driver through ppc_md
  126. config GENERIC_NVRAM
  127. bool
  128. default y if PPC32
  129. config SCHED_OMIT_FRAME_POINTER
  130. bool
  131. default y
  132. config ARCH_MAY_HAVE_PC_FDC
  133. bool
  134. default !PPC_PSERIES || PCI
  135. config PPC_OF
  136. def_bool y
  137. config PPC_UDBG_16550
  138. bool
  139. default n
  140. config GENERIC_TBSYNC
  141. bool
  142. default y if PPC32 && SMP
  143. default n
  144. config AUDIT_ARCH
  145. bool
  146. default y
  147. config GENERIC_BUG
  148. bool
  149. default y
  150. depends on BUG
  151. config SYS_SUPPORTS_APM_EMULATION
  152. default y if PMAC_APM_EMU
  153. bool
  154. config EPAPR_BOOT
  155. bool
  156. help
  157. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  158. default n
  159. config DEFAULT_UIMAGE
  160. bool
  161. help
  162. Used to allow a board to specify it wants a uImage built by default
  163. default n
  164. config REDBOOT
  165. bool
  166. config ARCH_HIBERNATION_POSSIBLE
  167. bool
  168. default y
  169. config ARCH_SUSPEND_POSSIBLE
  170. def_bool y
  171. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  172. (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
  173. config PPC_DCR_NATIVE
  174. bool
  175. default n
  176. config PPC_DCR_MMIO
  177. bool
  178. default n
  179. config PPC_DCR
  180. bool
  181. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  182. default y
  183. config PPC_OF_PLATFORM_PCI
  184. bool
  185. depends on PCI
  186. depends on PPC64 # not supported on 32 bits yet
  187. default n
  188. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  189. def_bool y
  190. config PPC_ADV_DEBUG_REGS
  191. bool
  192. depends on 40x || BOOKE
  193. default y
  194. config PPC_ADV_DEBUG_IACS
  195. int
  196. depends on PPC_ADV_DEBUG_REGS
  197. default 4 if 44x
  198. default 2
  199. config PPC_ADV_DEBUG_DACS
  200. int
  201. depends on PPC_ADV_DEBUG_REGS
  202. default 2
  203. config PPC_ADV_DEBUG_DVCS
  204. int
  205. depends on PPC_ADV_DEBUG_REGS
  206. default 2 if 44x
  207. default 0
  208. config PPC_ADV_DEBUG_DAC_RANGE
  209. bool
  210. depends on PPC_ADV_DEBUG_REGS && 44x
  211. default y
  212. source "init/Kconfig"
  213. source "kernel/Kconfig.freezer"
  214. source "arch/powerpc/sysdev/Kconfig"
  215. source "arch/powerpc/platforms/Kconfig"
  216. menu "Kernel options"
  217. config HIGHMEM
  218. bool "High memory support"
  219. depends on PPC32
  220. source kernel/time/Kconfig
  221. source kernel/Kconfig.hz
  222. source kernel/Kconfig.preempt
  223. source "fs/Kconfig.binfmt"
  224. config HUGETLB_PAGE_SIZE_VARIABLE
  225. bool
  226. depends on HUGETLB_PAGE
  227. default y
  228. config MATH_EMULATION
  229. bool "Math emulation"
  230. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  231. ---help---
  232. Some PowerPC chips designed for embedded applications do not have
  233. a floating-point unit and therefore do not implement the
  234. floating-point instructions in the PowerPC instruction set. If you
  235. say Y here, the kernel will include code to emulate a floating-point
  236. unit, which will allow programs that use floating-point
  237. instructions to run.
  238. config 8XX_MINIMAL_FPEMU
  239. bool "Minimal math emulation for 8xx"
  240. depends on 8xx && !MATH_EMULATION
  241. help
  242. Older arch/ppc kernels still emulated a few floating point
  243. instructions such as load and store, even when full math
  244. emulation is disabled. Say "Y" here if you want to preserve
  245. this behavior.
  246. It is recommended that you build a soft-float userspace instead.
  247. config IOMMU_HELPER
  248. def_bool PPC64
  249. config SWIOTLB
  250. bool "SWIOTLB support"
  251. default n
  252. select IOMMU_HELPER
  253. ---help---
  254. Support for IO bounce buffering for systems without an IOMMU.
  255. This allows us to DMA to the full physical address space on
  256. platforms where the size of a physical address is larger
  257. than the bus address. Not all platforms support this.
  258. config HOTPLUG_CPU
  259. bool "Support for enabling/disabling CPUs"
  260. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
  261. ---help---
  262. Say Y here to be able to disable and re-enable individual
  263. CPUs at runtime on SMP machines.
  264. Say N if you are unsure.
  265. config ARCH_CPU_PROBE_RELEASE
  266. def_bool y
  267. depends on HOTPLUG_CPU
  268. config ARCH_ENABLE_MEMORY_HOTPLUG
  269. def_bool y
  270. config ARCH_HAS_WALK_MEMORY
  271. def_bool y
  272. config ARCH_ENABLE_MEMORY_HOTREMOVE
  273. def_bool y
  274. config KEXEC
  275. bool "kexec system call (EXPERIMENTAL)"
  276. depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL
  277. help
  278. kexec is a system call that implements the ability to shutdown your
  279. current kernel, and to start another kernel. It is like a reboot
  280. but it is independent of the system firmware. And like a reboot
  281. you can start any kernel with it, not just Linux.
  282. The name comes from the similarity to the exec system call.
  283. It is an ongoing process to be certain the hardware in a machine
  284. is properly shutdown, so do not be surprised if this code does not
  285. initially work for you. It may help to enable device hotplugging
  286. support. As of this writing the exact hardware interface is
  287. strongly in flux, so no good recommendation can be made.
  288. config CRASH_DUMP
  289. bool "Build a kdump crash kernel"
  290. depends on PPC64 || 6xx || FSL_BOOKE
  291. select RELOCATABLE if PPC64 || FSL_BOOKE
  292. help
  293. Build a kernel suitable for use as a kdump capture kernel.
  294. The same kernel binary can be used as production kernel and dump
  295. capture kernel.
  296. config PHYP_DUMP
  297. bool "Hypervisor-assisted dump (EXPERIMENTAL)"
  298. depends on PPC_PSERIES && EXPERIMENTAL
  299. help
  300. Hypervisor-assisted dump is meant to be a kdump replacement
  301. offering robustness and speed not possible without system
  302. hypervisor assistance.
  303. If unsure, say "N"
  304. config IRQ_ALL_CPUS
  305. bool "Distribute interrupts on all CPUs by default"
  306. depends on SMP && !MV64360
  307. help
  308. This option gives the kernel permission to distribute IRQs across
  309. multiple CPUs. Saying N here will route all IRQs to the first
  310. CPU. Generally saying Y is safe, although some problems have been
  311. reported with SMP Power Macintoshes with this option enabled.
  312. config NUMA
  313. bool "NUMA support"
  314. depends on PPC64
  315. default y if SMP && PPC_PSERIES
  316. config NODES_SHIFT
  317. int
  318. default "8" if PPC64
  319. default "4"
  320. depends on NEED_MULTIPLE_NODES
  321. config MAX_ACTIVE_REGIONS
  322. int
  323. default "256" if PPC64
  324. default "32"
  325. config ARCH_SELECT_MEMORY_MODEL
  326. def_bool y
  327. depends on PPC64
  328. config ARCH_FLATMEM_ENABLE
  329. def_bool y
  330. depends on (PPC64 && !NUMA) || PPC32
  331. config ARCH_SPARSEMEM_ENABLE
  332. def_bool y
  333. depends on PPC64
  334. select SPARSEMEM_VMEMMAP_ENABLE
  335. config ARCH_SPARSEMEM_DEFAULT
  336. def_bool y
  337. depends on (SMP && PPC_PSERIES) || PPC_PS3
  338. config ARCH_POPULATES_NODE_MAP
  339. def_bool y
  340. config SYS_SUPPORTS_HUGETLBFS
  341. bool
  342. source "mm/Kconfig"
  343. config ARCH_MEMORY_PROBE
  344. def_bool y
  345. depends on MEMORY_HOTPLUG
  346. # Some NUMA nodes have memory ranges that span
  347. # other nodes. Even though a pfn is valid and
  348. # between a node's start and end pfns, it may not
  349. # reside on that node. See memmap_init_zone()
  350. # for details.
  351. config NODES_SPAN_OTHER_NODES
  352. def_bool y
  353. depends on NEED_MULTIPLE_NODES
  354. config PPC_HAS_HASH_64K
  355. bool
  356. depends on PPC64
  357. default n
  358. config STDBINUTILS
  359. bool "Using standard binutils settings"
  360. depends on 44x
  361. default y
  362. help
  363. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  364. Note, that kernel will be able to run only those applications,
  365. which had been compiled using binutils later than 2.17.50.0.3 with
  366. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  367. the older binutils, you can patch them with a trivial patch, which
  368. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  369. choice
  370. prompt "Page size"
  371. default PPC_4K_PAGES
  372. help
  373. Select the kernel logical page size. Increasing the page size
  374. will reduce software overhead at each page boundary, allow
  375. hardware prefetch mechanisms to be more effective, and allow
  376. larger dma transfers increasing IO efficiency and reducing
  377. overhead. However the utilization of memory will increase.
  378. For example, each cached file will using a multiple of the
  379. page size to hold its contents and the difference between the
  380. end of file and the end of page is wasted.
  381. Some dedicated systems, such as software raid serving with
  382. accelerated calculations, have shown significant increases.
  383. If you configure a 64 bit kernel for 64k pages but the
  384. processor does not support them, then the kernel will simulate
  385. them with 4k pages, loading them on demand, but with the
  386. reduced software overhead and larger internal fragmentation.
  387. For the 32 bit kernel, a large page option will not be offered
  388. unless it is supported by the configured processor.
  389. If unsure, choose 4K_PAGES.
  390. config PPC_4K_PAGES
  391. bool "4k page size"
  392. config PPC_16K_PAGES
  393. bool "16k page size" if 44x
  394. config PPC_64K_PAGES
  395. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  396. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  397. config PPC_256K_PAGES
  398. bool "256k page size" if 44x
  399. depends on !STDBINUTILS
  400. help
  401. Make the page size 256k.
  402. As the ELF standard only requires alignment to support page
  403. sizes up to 64k, you will need to compile all of your user
  404. space applications with a non-standard binutils settings
  405. (see the STDBINUTILS description for details).
  406. Say N unless you know what you are doing.
  407. endchoice
  408. config FORCE_MAX_ZONEORDER
  409. int "Maximum zone order"
  410. range 9 64 if PPC64 && PPC_64K_PAGES
  411. default "9" if PPC64 && PPC_64K_PAGES
  412. range 13 64 if PPC64 && !PPC_64K_PAGES
  413. default "13" if PPC64 && !PPC_64K_PAGES
  414. range 9 64 if PPC32 && PPC_16K_PAGES
  415. default "9" if PPC32 && PPC_16K_PAGES
  416. range 7 64 if PPC32 && PPC_64K_PAGES
  417. default "7" if PPC32 && PPC_64K_PAGES
  418. range 5 64 if PPC32 && PPC_256K_PAGES
  419. default "5" if PPC32 && PPC_256K_PAGES
  420. range 11 64
  421. default "11"
  422. help
  423. The kernel memory allocator divides physically contiguous memory
  424. blocks into "zones", where each zone is a power of two number of
  425. pages. This option selects the largest power of two that the kernel
  426. keeps in the memory allocator. If you need to allocate very large
  427. blocks of physically contiguous memory, then you may need to
  428. increase this value.
  429. This config option is actually maximum order plus one. For example,
  430. a value of 11 means that the largest free memory block is 2^10 pages.
  431. The page size is not necessarily 4KB. For example, on 64-bit
  432. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  433. this in mind when choosing a value for this option.
  434. config PPC_SUBPAGE_PROT
  435. bool "Support setting protections for 4k subpages"
  436. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  437. help
  438. This option adds support for a system call to allow user programs
  439. to set access permissions (read/write, readonly, or no access)
  440. on the 4k subpages of each 64k page.
  441. config SCHED_SMT
  442. bool "SMT (Hyperthreading) scheduler support"
  443. depends on PPC64 && SMP
  444. help
  445. SMT scheduler support improves the CPU scheduler's decision making
  446. when dealing with POWER5 cpus at a cost of slightly increased
  447. overhead in some places. If unsure say N here.
  448. config CMDLINE_BOOL
  449. bool "Default bootloader kernel arguments"
  450. config CMDLINE
  451. string "Initial kernel command string"
  452. depends on CMDLINE_BOOL
  453. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  454. help
  455. On some platforms, there is currently no way for the boot loader to
  456. pass arguments to the kernel. For these platforms, you can supply
  457. some command-line options at build time by entering them here. In
  458. most cases you will need to specify the root device here.
  459. config EXTRA_TARGETS
  460. string "Additional default image types"
  461. help
  462. List additional targets to be built by the bootwrapper here (separated
  463. by spaces). This is useful for targets that depend of device tree
  464. files in the .dts directory.
  465. Targets in this list will be build as part of the default build
  466. target, or when the user does a 'make zImage' or a
  467. 'make zImage.initrd'.
  468. If unsure, leave blank
  469. config ARCH_WANTS_FREEZER_CONTROL
  470. def_bool y
  471. depends on ADB_PMU
  472. source kernel/power/Kconfig
  473. config SECCOMP
  474. bool "Enable seccomp to safely compute untrusted bytecode"
  475. depends on PROC_FS
  476. default y
  477. help
  478. This kernel feature is useful for number crunching applications
  479. that may need to compute untrusted bytecode during their
  480. execution. By using pipes or other transports made available to
  481. the process as file descriptors supporting the read/write
  482. syscalls, it's possible to isolate those applications in
  483. their own address space using seccomp. Once seccomp is
  484. enabled via /proc/<pid>/seccomp, it cannot be disabled
  485. and the task is only allowed to execute a few safe syscalls
  486. defined by each seccomp mode.
  487. If unsure, say Y. Only embedded should say N here.
  488. endmenu
  489. config ISA_DMA_API
  490. bool
  491. default !PPC_ISERIES || PCI
  492. menu "Bus options"
  493. config ISA
  494. bool "Support for ISA-bus hardware"
  495. depends on PPC_PREP || PPC_CHRP
  496. select PPC_I8259
  497. help
  498. Find out whether you have ISA slots on your motherboard. ISA is the
  499. name of a bus system, i.e. the way the CPU talks to the other stuff
  500. inside your box. If you have an Apple machine, say N here; if you
  501. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  502. you have an embedded board, consult your board documentation.
  503. config ZONE_DMA
  504. bool
  505. default y
  506. config NEED_DMA_MAP_STATE
  507. def_bool (PPC64 || NOT_COHERENT_CACHE)
  508. config NEED_SG_DMA_LENGTH
  509. def_bool y
  510. config GENERIC_ISA_DMA
  511. bool
  512. depends on ISA_DMA_API
  513. default y
  514. config PPC_INDIRECT_PCI
  515. bool
  516. depends on PCI
  517. default y if 40x || 44x
  518. default n
  519. config EISA
  520. bool
  521. config SBUS
  522. bool
  523. config FSL_SOC
  524. bool
  525. select HAVE_CAN_FLEXCAN if NET && CAN
  526. select PPC_CLOCK if CAN_FLEXCAN
  527. config FSL_PCI
  528. bool
  529. select PPC_INDIRECT_PCI
  530. select PCI_QUIRKS
  531. config FSL_PMC
  532. bool
  533. default y
  534. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  535. help
  536. Freescale MPC85xx/MPC86xx power management controller support
  537. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  538. config PPC4xx_CPM
  539. bool
  540. default y
  541. depends on SUSPEND && (44x || 40x)
  542. help
  543. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  544. It also enables support for two different idle states (idle-wait
  545. and idle-doze).
  546. config 4xx_SOC
  547. bool
  548. config FSL_LBC
  549. bool "Freescale Local Bus support"
  550. depends on FSL_SOC
  551. help
  552. Enables reporting of errors from the Freescale local bus
  553. controller. Also contains some common code used by
  554. drivers for specific local bus peripherals.
  555. config FSL_GTM
  556. bool
  557. depends on PPC_83xx || QUICC_ENGINE || CPM2
  558. help
  559. Freescale General-purpose Timers support
  560. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  561. config MCA
  562. bool
  563. # Platforms that what PCI turned unconditionally just do select PCI
  564. # in their config node. Platforms that want to choose at config
  565. # time should select PPC_PCI_CHOICE
  566. config PPC_PCI_CHOICE
  567. bool
  568. config PCI
  569. bool "PCI support" if PPC_PCI_CHOICE
  570. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  571. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  572. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  573. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  574. select ARCH_SUPPORTS_MSI
  575. select GENERIC_PCI_IOMAP
  576. help
  577. Find out whether your system includes a PCI bus. PCI is the name of
  578. a bus system, i.e. the way the CPU talks to the other stuff inside
  579. your box. If you say Y here, the kernel will include drivers and
  580. infrastructure code to support PCI bus devices.
  581. config PCI_DOMAINS
  582. def_bool PCI
  583. config PCI_SYSCALL
  584. def_bool PCI
  585. config PCI_QSPAN
  586. bool "QSpan PCI"
  587. depends on !4xx && !CPM2 && 8xx
  588. select PPC_I8259
  589. help
  590. Say Y here if you have a system based on a Motorola 8xx-series
  591. embedded processor with a QSPAN PCI interface, otherwise say N.
  592. config PCI_8260
  593. bool
  594. depends on PCI && 8260
  595. select PPC_INDIRECT_PCI
  596. default y
  597. config 8260_PCI9
  598. bool "Enable workaround for MPC826x erratum PCI 9"
  599. depends on PCI_8260 && !8272
  600. default y
  601. source "drivers/pci/pcie/Kconfig"
  602. source "drivers/pci/Kconfig"
  603. source "drivers/pcmcia/Kconfig"
  604. source "drivers/pci/hotplug/Kconfig"
  605. config HAS_RAPIDIO
  606. bool
  607. default n
  608. config RAPIDIO
  609. bool "RapidIO support"
  610. depends on HAS_RAPIDIO || PCI
  611. help
  612. If you say Y here, the kernel will include drivers and
  613. infrastructure code to support RapidIO interconnect devices.
  614. config FSL_RIO
  615. bool "Freescale Embedded SRIO Controller support"
  616. depends on RAPIDIO && HAS_RAPIDIO
  617. default "n"
  618. ---help---
  619. Include support for RapidIO controller on Freescale embedded
  620. processors (MPC8548, MPC8641, etc).
  621. source "drivers/rapidio/Kconfig"
  622. endmenu
  623. menu "Advanced setup"
  624. depends on PPC32
  625. config ADVANCED_OPTIONS
  626. bool "Prompt for advanced kernel configuration options"
  627. help
  628. This option will enable prompting for a variety of advanced kernel
  629. configuration options. These options can cause the kernel to not
  630. work if they are set incorrectly, but can be used to optimize certain
  631. aspects of kernel memory management.
  632. Unless you know what you are doing, say N here.
  633. comment "Default settings for advanced configuration options are used"
  634. depends on !ADVANCED_OPTIONS
  635. config LOWMEM_SIZE_BOOL
  636. bool "Set maximum low memory"
  637. depends on ADVANCED_OPTIONS
  638. help
  639. This option allows you to set the maximum amount of memory which
  640. will be used as "low memory", that is, memory which the kernel can
  641. access directly, without having to set up a kernel virtual mapping.
  642. This can be useful in optimizing the layout of kernel virtual
  643. memory.
  644. Say N here unless you know what you are doing.
  645. config LOWMEM_SIZE
  646. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  647. default "0x30000000"
  648. config LOWMEM_CAM_NUM_BOOL
  649. bool "Set number of CAMs to use to map low memory"
  650. depends on ADVANCED_OPTIONS && FSL_BOOKE
  651. help
  652. This option allows you to set the maximum number of CAM slots that
  653. will be used to map low memory. There are a limited number of slots
  654. available and even more limited number that will fit in the L1 MMU.
  655. However, using more entries will allow mapping more low memory. This
  656. can be useful in optimizing the layout of kernel virtual memory.
  657. Say N here unless you know what you are doing.
  658. config LOWMEM_CAM_NUM
  659. depends on FSL_BOOKE
  660. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  661. default 3
  662. config RELOCATABLE
  663. bool "Build a relocatable kernel (EXPERIMENTAL)"
  664. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || PPC_47x)
  665. help
  666. This builds a kernel image that is capable of running at the
  667. location the kernel is loaded at (some alignment restrictions may
  668. exist).
  669. One use is for the kexec on panic case where the recovery kernel
  670. must live at a different physical address than the primary
  671. kernel.
  672. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  673. it has been loaded at and the compile time physical addresses
  674. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  675. setting can still be useful to bootwrappers that need to know the
  676. load location of the kernel (eg. u-boot/mkimage).
  677. config PAGE_OFFSET_BOOL
  678. bool "Set custom page offset address"
  679. depends on ADVANCED_OPTIONS
  680. help
  681. This option allows you to set the kernel virtual address at which
  682. the kernel will map low memory. This can be useful in optimizing
  683. the virtual memory layout of the system.
  684. Say N here unless you know what you are doing.
  685. config PAGE_OFFSET
  686. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  687. default "0xc0000000"
  688. config KERNEL_START_BOOL
  689. bool "Set custom kernel base address"
  690. depends on ADVANCED_OPTIONS
  691. help
  692. This option allows you to set the kernel virtual address at which
  693. the kernel will be loaded. Normally this should match PAGE_OFFSET
  694. however there are times (like kdump) that one might not want them
  695. to be the same.
  696. Say N here unless you know what you are doing.
  697. config KERNEL_START
  698. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  699. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  700. default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
  701. default "0xc0000000"
  702. config PHYSICAL_START_BOOL
  703. bool "Set physical address where the kernel is loaded"
  704. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  705. help
  706. This gives the physical address where the kernel is loaded.
  707. Say N here unless you know what you are doing.
  708. config PHYSICAL_START
  709. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  710. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
  711. default "0x00000000"
  712. config PHYSICAL_ALIGN
  713. hex
  714. default "0x04000000" if FSL_BOOKE
  715. help
  716. This value puts the alignment restrictions on physical address
  717. where kernel is loaded and run from. Kernel is compiled for an
  718. address which meets above alignment restriction.
  719. config TASK_SIZE_BOOL
  720. bool "Set custom user task size"
  721. depends on ADVANCED_OPTIONS
  722. help
  723. This option allows you to set the amount of virtual address space
  724. allocated to user tasks. This can be useful in optimizing the
  725. virtual memory layout of the system.
  726. Say N here unless you know what you are doing.
  727. config TASK_SIZE
  728. hex "Size of user task space" if TASK_SIZE_BOOL
  729. default "0x80000000" if PPC_PREP || PPC_8xx
  730. default "0xc0000000"
  731. config CONSISTENT_SIZE_BOOL
  732. bool "Set custom consistent memory pool size"
  733. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  734. help
  735. This option allows you to set the size of the
  736. consistent memory pool. This pool of virtual memory
  737. is used to make consistent memory allocations.
  738. config CONSISTENT_SIZE
  739. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  740. default "0x00200000" if NOT_COHERENT_CACHE
  741. config PIN_TLB
  742. bool "Pinned Kernel TLBs (860 ONLY)"
  743. depends on ADVANCED_OPTIONS && 8xx
  744. endmenu
  745. if PPC64
  746. config RELOCATABLE
  747. bool "Build a relocatable kernel"
  748. help
  749. This builds a kernel image that is capable of running anywhere
  750. in the RMA (real memory area) at any 16k-aligned base address.
  751. The kernel is linked as a position-independent executable (PIE)
  752. and contains dynamic relocations which are processed early
  753. in the bootup process.
  754. One use is for the kexec on panic case where the recovery kernel
  755. must live at a different physical address than the primary
  756. kernel.
  757. config PAGE_OFFSET
  758. hex
  759. default "0xc000000000000000"
  760. config KERNEL_START
  761. hex
  762. default "0xc000000000000000"
  763. config PHYSICAL_START
  764. hex
  765. default "0x00000000"
  766. endif
  767. source "net/Kconfig"
  768. source "drivers/Kconfig"
  769. source "fs/Kconfig"
  770. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  771. source "lib/Kconfig"
  772. source "arch/powerpc/Kconfig.debug"
  773. source "security/Kconfig"
  774. config KEYS_COMPAT
  775. bool
  776. depends on COMPAT && KEYS
  777. default y
  778. source "crypto/Kconfig"
  779. config PPC_CLOCK
  780. bool
  781. default n
  782. select HAVE_CLK
  783. config PPC_LIB_RHEAP
  784. bool
  785. source "arch/powerpc/kvm/Kconfig"