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