Kconfig 26 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 HAVE_SETUP_PER_CPU_AREA
  23. def_bool PPC64
  24. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  25. def_bool PPC64
  26. config NR_IRQS
  27. int "Number of virtual interrupt numbers"
  28. range 32 32768
  29. default "512"
  30. help
  31. This defines the number of virtual interrupt numbers the kernel
  32. can manage. Virtual interrupt numbers are what you see in
  33. /proc/interrupts. If you configure your system to have too few,
  34. drivers will fail to load or worse - handle with care.
  35. config STACKTRACE_SUPPORT
  36. bool
  37. default y
  38. config HAVE_LATENCYTOP_SUPPORT
  39. def_bool y
  40. config TRACE_IRQFLAGS_SUPPORT
  41. bool
  42. default y
  43. config LOCKDEP_SUPPORT
  44. bool
  45. default y
  46. config RWSEM_GENERIC_SPINLOCK
  47. bool
  48. config RWSEM_XCHGADD_ALGORITHM
  49. bool
  50. default y
  51. config GENERIC_LOCKBREAK
  52. bool
  53. default y
  54. depends on SMP && PREEMPT
  55. config ARCH_HAS_ILOG2_U32
  56. bool
  57. default y
  58. config ARCH_HAS_ILOG2_U64
  59. bool
  60. default y if 64BIT
  61. config GENERIC_HWEIGHT
  62. bool
  63. default y
  64. config PPC
  65. bool
  66. default y
  67. select BINFMT_ELF
  68. select OF
  69. select OF_EARLY_FLATTREE
  70. select HAVE_FTRACE_MCOUNT_RECORD
  71. select HAVE_DYNAMIC_FTRACE
  72. select HAVE_FUNCTION_TRACER
  73. select HAVE_FUNCTION_GRAPH_TRACER
  74. select SYSCTL_EXCEPTION_TRACE
  75. select ARCH_WANT_OPTIONAL_GPIOLIB
  76. select VIRT_TO_BUS if !PPC64
  77. select HAVE_IDE
  78. select HAVE_IOREMAP_PROT
  79. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  80. select HAVE_KPROBES
  81. select HAVE_ARCH_KGDB
  82. select HAVE_KRETPROBES
  83. select HAVE_ARCH_TRACEHOOK
  84. select HAVE_MEMBLOCK
  85. select HAVE_MEMBLOCK_NODE_MAP
  86. select HAVE_DMA_ATTRS
  87. select HAVE_DMA_API_DEBUG
  88. select USE_GENERIC_SMP_HELPERS if SMP
  89. select HAVE_OPROFILE
  90. select HAVE_DEBUG_KMEMLEAK
  91. select GENERIC_ATOMIC64 if PPC32
  92. select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  93. select HAVE_PERF_EVENTS
  94. select HAVE_REGS_AND_STACK_ACCESS_API
  95. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  96. select HAVE_GENERIC_HARDIRQS
  97. select ARCH_WANT_IPC_PARSE_VERSION
  98. select SPARSE_IRQ
  99. select IRQ_DOMAIN
  100. select GENERIC_IRQ_SHOW
  101. select GENERIC_IRQ_SHOW_LEVEL
  102. select IRQ_FORCED_THREADING
  103. select HAVE_RCU_TABLE_FREE if SMP
  104. select HAVE_SYSCALL_TRACEPOINTS
  105. select HAVE_BPF_JIT if PPC64
  106. select HAVE_ARCH_JUMP_LABEL
  107. select ARCH_HAVE_NMI_SAFE_CMPXCHG
  108. select GENERIC_SMP_IDLE_THREAD
  109. select GENERIC_CMOS_UPDATE
  110. select GENERIC_TIME_VSYSCALL_OLD
  111. select GENERIC_CLOCKEVENTS
  112. select GENERIC_STRNCPY_FROM_USER
  113. select GENERIC_STRNLEN_USER
  114. select HAVE_MOD_ARCH_SPECIFIC
  115. select MODULES_USE_ELF_RELA
  116. select CLONE_BACKWARDS
  117. select ARCH_USE_BUILTIN_BSWAP
  118. select OLD_SIGSUSPEND
  119. select OLD_SIGACTION if PPC32
  120. config EARLY_PRINTK
  121. bool
  122. default y
  123. config COMPAT
  124. bool
  125. default y if PPC64
  126. select COMPAT_BINFMT_ELF
  127. select ARCH_WANT_OLD_COMPAT_IPC
  128. select COMPAT_OLD_SIGACTION
  129. config SYSVIPC_COMPAT
  130. bool
  131. depends on COMPAT && SYSVIPC
  132. default y
  133. # All PPC32s use generic nvram driver through ppc_md
  134. config GENERIC_NVRAM
  135. bool
  136. default y if PPC32
  137. config SCHED_OMIT_FRAME_POINTER
  138. bool
  139. default y
  140. config ARCH_MAY_HAVE_PC_FDC
  141. bool
  142. default !PPC_PSERIES || PCI
  143. config PPC_OF
  144. def_bool y
  145. config PPC_UDBG_16550
  146. bool
  147. default n
  148. config GENERIC_TBSYNC
  149. bool
  150. default y if PPC32 && SMP
  151. default n
  152. config AUDIT_ARCH
  153. bool
  154. default y
  155. config GENERIC_BUG
  156. bool
  157. default y
  158. depends on BUG
  159. config SYS_SUPPORTS_APM_EMULATION
  160. default y if PMAC_APM_EMU
  161. bool
  162. config EPAPR_BOOT
  163. bool
  164. help
  165. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  166. default n
  167. config DEFAULT_UIMAGE
  168. bool
  169. help
  170. Used to allow a board to specify it wants a uImage built by default
  171. default n
  172. config REDBOOT
  173. bool
  174. config ARCH_HIBERNATION_POSSIBLE
  175. bool
  176. default y
  177. config ARCH_SUSPEND_POSSIBLE
  178. def_bool y
  179. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  180. (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
  181. || 44x || 40x
  182. config PPC_DCR_NATIVE
  183. bool
  184. default n
  185. config PPC_DCR_MMIO
  186. bool
  187. default n
  188. config PPC_DCR
  189. bool
  190. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  191. default y
  192. config PPC_OF_PLATFORM_PCI
  193. bool
  194. depends on PCI
  195. depends on PPC64 # not supported on 32 bits yet
  196. default n
  197. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  198. def_bool y
  199. config ARCH_SUPPORTS_UPROBES
  200. def_bool y
  201. config PPC_ADV_DEBUG_REGS
  202. bool
  203. depends on 40x || BOOKE
  204. default y
  205. config PPC_ADV_DEBUG_IACS
  206. int
  207. depends on PPC_ADV_DEBUG_REGS
  208. default 4 if 44x
  209. default 2
  210. config PPC_ADV_DEBUG_DACS
  211. int
  212. depends on PPC_ADV_DEBUG_REGS
  213. default 2
  214. config PPC_ADV_DEBUG_DVCS
  215. int
  216. depends on PPC_ADV_DEBUG_REGS
  217. default 2 if 44x
  218. default 0
  219. config PPC_ADV_DEBUG_DAC_RANGE
  220. bool
  221. depends on PPC_ADV_DEBUG_REGS && 44x
  222. default y
  223. config PPC_EMULATE_SSTEP
  224. bool
  225. default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
  226. source "init/Kconfig"
  227. source "kernel/Kconfig.freezer"
  228. source "arch/powerpc/sysdev/Kconfig"
  229. source "arch/powerpc/platforms/Kconfig"
  230. menu "Kernel options"
  231. config HIGHMEM
  232. bool "High memory support"
  233. depends on PPC32
  234. source kernel/Kconfig.hz
  235. source kernel/Kconfig.preempt
  236. source "fs/Kconfig.binfmt"
  237. config HUGETLB_PAGE_SIZE_VARIABLE
  238. bool
  239. depends on HUGETLB_PAGE
  240. default y
  241. config MATH_EMULATION
  242. bool "Math emulation"
  243. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  244. ---help---
  245. Some PowerPC chips designed for embedded applications do not have
  246. a floating-point unit and therefore do not implement the
  247. floating-point instructions in the PowerPC instruction set. If you
  248. say Y here, the kernel will include code to emulate a floating-point
  249. unit, which will allow programs that use floating-point
  250. instructions to run.
  251. config PPC_TRANSACTIONAL_MEM
  252. bool "Transactional Memory support for POWERPC"
  253. depends on PPC_BOOK3S_64
  254. depends on SMP
  255. default n
  256. ---help---
  257. Support user-mode Transactional Memory on POWERPC.
  258. config 8XX_MINIMAL_FPEMU
  259. bool "Minimal math emulation for 8xx"
  260. depends on 8xx && !MATH_EMULATION
  261. help
  262. Older arch/ppc kernels still emulated a few floating point
  263. instructions such as load and store, even when full math
  264. emulation is disabled. Say "Y" here if you want to preserve
  265. this behavior.
  266. It is recommended that you build a soft-float userspace instead.
  267. config IOMMU_HELPER
  268. def_bool PPC64
  269. config SWIOTLB
  270. bool "SWIOTLB support"
  271. default n
  272. select IOMMU_HELPER
  273. ---help---
  274. Support for IO bounce buffering for systems without an IOMMU.
  275. This allows us to DMA to the full physical address space on
  276. platforms where the size of a physical address is larger
  277. than the bus address. Not all platforms support this.
  278. config HOTPLUG_CPU
  279. bool "Support for enabling/disabling CPUs"
  280. depends on SMP && HOTPLUG && (PPC_PSERIES || \
  281. PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
  282. ---help---
  283. Say Y here to be able to disable and re-enable individual
  284. CPUs at runtime on SMP machines.
  285. Say N if you are unsure.
  286. config ARCH_CPU_PROBE_RELEASE
  287. def_bool y
  288. depends on HOTPLUG_CPU
  289. config ARCH_ENABLE_MEMORY_HOTPLUG
  290. def_bool y
  291. config ARCH_HAS_WALK_MEMORY
  292. def_bool y
  293. config ARCH_ENABLE_MEMORY_HOTREMOVE
  294. def_bool y
  295. config KEXEC
  296. bool "kexec system call"
  297. depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
  298. help
  299. kexec is a system call that implements the ability to shutdown your
  300. current kernel, and to start another kernel. It is like a reboot
  301. but it is independent of the system firmware. And like a reboot
  302. you can start any kernel with it, not just Linux.
  303. The name comes from the similarity to the exec system call.
  304. It is an ongoing process to be certain the hardware in a machine
  305. is properly shutdown, so do not be surprised if this code does not
  306. initially work for you. It may help to enable device hotplugging
  307. support. As of this writing the exact hardware interface is
  308. strongly in flux, so no good recommendation can be made.
  309. config CRASH_DUMP
  310. bool "Build a kdump crash kernel"
  311. depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
  312. select RELOCATABLE if PPC64 || 44x
  313. select DYNAMIC_MEMSTART if FSL_BOOKE
  314. help
  315. Build a kernel suitable for use as a kdump capture kernel.
  316. The same kernel binary can be used as production kernel and dump
  317. capture kernel.
  318. config FA_DUMP
  319. bool "Firmware-assisted dump"
  320. depends on PPC64 && PPC_RTAS && CRASH_DUMP
  321. help
  322. A robust mechanism to get reliable kernel crash dump with
  323. assistance from firmware. This approach does not use kexec,
  324. instead firmware assists in booting the kdump kernel
  325. while preserving memory contents. Firmware-assisted dump
  326. is meant to be a kdump replacement offering robustness and
  327. speed not possible without system firmware assistance.
  328. If unsure, say "N"
  329. config IRQ_ALL_CPUS
  330. bool "Distribute interrupts on all CPUs by default"
  331. depends on SMP && !MV64360
  332. help
  333. This option gives the kernel permission to distribute IRQs across
  334. multiple CPUs. Saying N here will route all IRQs to the first
  335. CPU. Generally saying Y is safe, although some problems have been
  336. reported with SMP Power Macintoshes with this option enabled.
  337. config NUMA
  338. bool "NUMA support"
  339. depends on PPC64
  340. default y if SMP && PPC_PSERIES
  341. config NODES_SHIFT
  342. int
  343. default "8" if PPC64
  344. default "4"
  345. depends on NEED_MULTIPLE_NODES
  346. config ARCH_SELECT_MEMORY_MODEL
  347. def_bool y
  348. depends on PPC64
  349. config ARCH_FLATMEM_ENABLE
  350. def_bool y
  351. depends on (PPC64 && !NUMA) || PPC32
  352. config ARCH_SPARSEMEM_ENABLE
  353. def_bool y
  354. depends on PPC64
  355. select SPARSEMEM_VMEMMAP_ENABLE
  356. config ARCH_SPARSEMEM_DEFAULT
  357. def_bool y
  358. depends on (SMP && PPC_PSERIES) || PPC_PS3
  359. config SYS_SUPPORTS_HUGETLBFS
  360. bool
  361. source "mm/Kconfig"
  362. config ARCH_MEMORY_PROBE
  363. def_bool y
  364. depends on MEMORY_HOTPLUG
  365. # Some NUMA nodes have memory ranges that span
  366. # other nodes. Even though a pfn is valid and
  367. # between a node's start and end pfns, it may not
  368. # reside on that node. See memmap_init_zone()
  369. # for details.
  370. config NODES_SPAN_OTHER_NODES
  371. def_bool y
  372. depends on NEED_MULTIPLE_NODES
  373. config PPC_HAS_HASH_64K
  374. bool
  375. depends on PPC64
  376. default n
  377. config STDBINUTILS
  378. bool "Using standard binutils settings"
  379. depends on 44x
  380. default y
  381. help
  382. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  383. Note, that kernel will be able to run only those applications,
  384. which had been compiled using binutils later than 2.17.50.0.3 with
  385. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  386. the older binutils, you can patch them with a trivial patch, which
  387. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  388. choice
  389. prompt "Page size"
  390. default PPC_4K_PAGES
  391. help
  392. Select the kernel logical page size. Increasing the page size
  393. will reduce software overhead at each page boundary, allow
  394. hardware prefetch mechanisms to be more effective, and allow
  395. larger dma transfers increasing IO efficiency and reducing
  396. overhead. However the utilization of memory will increase.
  397. For example, each cached file will using a multiple of the
  398. page size to hold its contents and the difference between the
  399. end of file and the end of page is wasted.
  400. Some dedicated systems, such as software raid serving with
  401. accelerated calculations, have shown significant increases.
  402. If you configure a 64 bit kernel for 64k pages but the
  403. processor does not support them, then the kernel will simulate
  404. them with 4k pages, loading them on demand, but with the
  405. reduced software overhead and larger internal fragmentation.
  406. For the 32 bit kernel, a large page option will not be offered
  407. unless it is supported by the configured processor.
  408. If unsure, choose 4K_PAGES.
  409. config PPC_4K_PAGES
  410. bool "4k page size"
  411. config PPC_16K_PAGES
  412. bool "16k page size" if 44x
  413. config PPC_64K_PAGES
  414. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  415. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  416. config PPC_256K_PAGES
  417. bool "256k page size" if 44x
  418. depends on !STDBINUTILS
  419. help
  420. Make the page size 256k.
  421. As the ELF standard only requires alignment to support page
  422. sizes up to 64k, you will need to compile all of your user
  423. space applications with a non-standard binutils settings
  424. (see the STDBINUTILS description for details).
  425. Say N unless you know what you are doing.
  426. endchoice
  427. config FORCE_MAX_ZONEORDER
  428. int "Maximum zone order"
  429. range 9 64 if PPC64 && PPC_64K_PAGES
  430. default "9" if PPC64 && PPC_64K_PAGES
  431. range 13 64 if PPC64 && !PPC_64K_PAGES
  432. default "13" if PPC64 && !PPC_64K_PAGES
  433. range 9 64 if PPC32 && PPC_16K_PAGES
  434. default "9" if PPC32 && PPC_16K_PAGES
  435. range 7 64 if PPC32 && PPC_64K_PAGES
  436. default "7" if PPC32 && PPC_64K_PAGES
  437. range 5 64 if PPC32 && PPC_256K_PAGES
  438. default "5" if PPC32 && PPC_256K_PAGES
  439. range 11 64
  440. default "11"
  441. help
  442. The kernel memory allocator divides physically contiguous memory
  443. blocks into "zones", where each zone is a power of two number of
  444. pages. This option selects the largest power of two that the kernel
  445. keeps in the memory allocator. If you need to allocate very large
  446. blocks of physically contiguous memory, then you may need to
  447. increase this value.
  448. This config option is actually maximum order plus one. For example,
  449. a value of 11 means that the largest free memory block is 2^10 pages.
  450. The page size is not necessarily 4KB. For example, on 64-bit
  451. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  452. this in mind when choosing a value for this option.
  453. config PPC_SUBPAGE_PROT
  454. bool "Support setting protections for 4k subpages"
  455. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  456. help
  457. This option adds support for a system call to allow user programs
  458. to set access permissions (read/write, readonly, or no access)
  459. on the 4k subpages of each 64k page.
  460. config SCHED_SMT
  461. bool "SMT (Hyperthreading) scheduler support"
  462. depends on PPC64 && SMP
  463. help
  464. SMT scheduler support improves the CPU scheduler's decision making
  465. when dealing with POWER5 cpus at a cost of slightly increased
  466. overhead in some places. If unsure say N here.
  467. config PPC_DENORMALISATION
  468. bool "PowerPC denormalisation exception handling"
  469. depends on PPC_BOOK3S_64
  470. default "n"
  471. ---help---
  472. Add support for handling denormalisation of single precision
  473. values. Useful for bare metal only. If unsure say Y here.
  474. config CMDLINE_BOOL
  475. bool "Default bootloader kernel arguments"
  476. config CMDLINE
  477. string "Initial kernel command string"
  478. depends on CMDLINE_BOOL
  479. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  480. help
  481. On some platforms, there is currently no way for the boot loader to
  482. pass arguments to the kernel. For these platforms, you can supply
  483. some command-line options at build time by entering them here. In
  484. most cases you will need to specify the root device here.
  485. config EXTRA_TARGETS
  486. string "Additional default image types"
  487. help
  488. List additional targets to be built by the bootwrapper here (separated
  489. by spaces). This is useful for targets that depend of device tree
  490. files in the .dts directory.
  491. Targets in this list will be build as part of the default build
  492. target, or when the user does a 'make zImage' or a
  493. 'make zImage.initrd'.
  494. If unsure, leave blank
  495. config ARCH_WANTS_FREEZER_CONTROL
  496. def_bool y
  497. depends on ADB_PMU
  498. source kernel/power/Kconfig
  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 PCI
  518. menu "Bus options"
  519. config ISA
  520. bool "Support for ISA-bus hardware"
  521. depends on 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, say Y. If you have an
  528. embedded board, consult your board documentation.
  529. config ZONE_DMA
  530. bool
  531. default y
  532. config NEED_DMA_MAP_STATE
  533. def_bool (PPC64 || NOT_COHERENT_CACHE)
  534. config NEED_SG_DMA_LENGTH
  535. def_bool y
  536. config GENERIC_ISA_DMA
  537. bool
  538. depends on ISA_DMA_API
  539. default y
  540. config PPC_INDIRECT_PCI
  541. bool
  542. depends on PCI
  543. default y if 40x || 44x
  544. default n
  545. config EISA
  546. bool
  547. config SBUS
  548. bool
  549. config FSL_SOC
  550. bool
  551. select HAVE_CAN_FLEXCAN if NET && CAN
  552. config FSL_PCI
  553. bool
  554. select PPC_INDIRECT_PCI
  555. select PCI_QUIRKS
  556. config FSL_PMC
  557. bool
  558. default y
  559. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  560. help
  561. Freescale MPC85xx/MPC86xx power management controller support
  562. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  563. config PPC4xx_CPM
  564. bool
  565. default y
  566. depends on SUSPEND && (44x || 40x)
  567. help
  568. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  569. It also enables support for two different idle states (idle-wait
  570. and idle-doze).
  571. config 4xx_SOC
  572. bool
  573. config FSL_LBC
  574. bool "Freescale Local Bus support"
  575. depends on FSL_SOC
  576. help
  577. Enables reporting of errors from the Freescale local bus
  578. controller. Also contains some common code used by
  579. drivers for specific local bus peripherals.
  580. config FSL_IFC
  581. bool
  582. depends on FSL_SOC
  583. config FSL_GTM
  584. bool
  585. depends on PPC_83xx || QUICC_ENGINE || CPM2
  586. help
  587. Freescale General-purpose Timers support
  588. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  589. config MCA
  590. bool
  591. # Platforms that what PCI turned unconditionally just do select PCI
  592. # in their config node. Platforms that want to choose at config
  593. # time should select PPC_PCI_CHOICE
  594. config PPC_PCI_CHOICE
  595. bool
  596. config PCI
  597. bool "PCI support" if PPC_PCI_CHOICE
  598. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  599. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  600. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  601. select ARCH_SUPPORTS_MSI
  602. select GENERIC_PCI_IOMAP
  603. help
  604. Find out whether your system includes a PCI bus. PCI is the name of
  605. a bus system, i.e. the way the CPU talks to the other stuff inside
  606. your box. If you say Y here, the kernel will include drivers and
  607. infrastructure code to support PCI bus devices.
  608. config PCI_DOMAINS
  609. def_bool PCI
  610. config PCI_SYSCALL
  611. def_bool PCI
  612. config PCI_QSPAN
  613. bool "QSpan PCI"
  614. depends on !4xx && !CPM2 && 8xx
  615. select PPC_I8259
  616. help
  617. Say Y here if you have a system based on a Motorola 8xx-series
  618. embedded processor with a QSPAN PCI interface, otherwise say N.
  619. config PCI_8260
  620. bool
  621. depends on PCI && 8260
  622. select PPC_INDIRECT_PCI
  623. default y
  624. source "drivers/pci/pcie/Kconfig"
  625. source "drivers/pci/Kconfig"
  626. source "drivers/pcmcia/Kconfig"
  627. source "drivers/pci/hotplug/Kconfig"
  628. config HAS_RAPIDIO
  629. bool
  630. default n
  631. config RAPIDIO
  632. bool "RapidIO support"
  633. depends on HAS_RAPIDIO || PCI
  634. help
  635. If you say Y here, the kernel will include drivers and
  636. infrastructure code to support RapidIO interconnect devices.
  637. config FSL_RIO
  638. bool "Freescale Embedded SRIO Controller support"
  639. depends on RAPIDIO && HAS_RAPIDIO
  640. default "n"
  641. ---help---
  642. Include support for RapidIO controller on Freescale embedded
  643. processors (MPC8548, MPC8641, etc).
  644. source "drivers/rapidio/Kconfig"
  645. endmenu
  646. config NONSTATIC_KERNEL
  647. bool
  648. default n
  649. menu "Advanced setup"
  650. depends on PPC32
  651. config ADVANCED_OPTIONS
  652. bool "Prompt for advanced kernel configuration options"
  653. help
  654. This option will enable prompting for a variety of advanced kernel
  655. configuration options. These options can cause the kernel to not
  656. work if they are set incorrectly, but can be used to optimize certain
  657. aspects of kernel memory management.
  658. Unless you know what you are doing, say N here.
  659. comment "Default settings for advanced configuration options are used"
  660. depends on !ADVANCED_OPTIONS
  661. config LOWMEM_SIZE_BOOL
  662. bool "Set maximum low memory"
  663. depends on ADVANCED_OPTIONS
  664. help
  665. This option allows you to set the maximum amount of memory which
  666. will be used as "low memory", that is, memory which the kernel can
  667. access directly, without having to set up a kernel virtual mapping.
  668. This can be useful in optimizing the layout of kernel virtual
  669. memory.
  670. Say N here unless you know what you are doing.
  671. config LOWMEM_SIZE
  672. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  673. default "0x30000000"
  674. config LOWMEM_CAM_NUM_BOOL
  675. bool "Set number of CAMs to use to map low memory"
  676. depends on ADVANCED_OPTIONS && FSL_BOOKE
  677. help
  678. This option allows you to set the maximum number of CAM slots that
  679. will be used to map low memory. There are a limited number of slots
  680. available and even more limited number that will fit in the L1 MMU.
  681. However, using more entries will allow mapping more low memory. This
  682. can be useful in optimizing the layout of kernel virtual memory.
  683. Say N here unless you know what you are doing.
  684. config LOWMEM_CAM_NUM
  685. depends on FSL_BOOKE
  686. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  687. default 3
  688. config DYNAMIC_MEMSTART
  689. bool "Enable page aligned dynamic load address for kernel"
  690. depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
  691. select NONSTATIC_KERNEL
  692. help
  693. This option enables the kernel to be loaded at any page aligned
  694. physical address. The kernel creates a mapping from KERNELBASE to
  695. the address where the kernel is loaded. The page size here implies
  696. the TLB page size of the mapping for kernel on the particular platform.
  697. Please refer to the init code for finding the TLB page size.
  698. DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
  699. kernel image, where the only restriction is the page aligned kernel
  700. load address. When this option is enabled, the compile time physical
  701. address CONFIG_PHYSICAL_START is ignored.
  702. This option is overridden by CONFIG_RELOCATABLE
  703. config RELOCATABLE
  704. bool "Build a relocatable kernel"
  705. depends on ADVANCED_OPTIONS && FLATMEM && 44x
  706. select NONSTATIC_KERNEL
  707. help
  708. This builds a kernel image that is capable of running at the
  709. location the kernel is loaded at, without any alignment restrictions.
  710. This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
  711. One use is for the kexec on panic case where the recovery kernel
  712. must live at a different physical address than the primary
  713. kernel.
  714. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  715. it has been loaded at and the compile time physical addresses
  716. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  717. setting can still be useful to bootwrappers that need to know the
  718. load address of the kernel (eg. u-boot/mkimage).
  719. config RELOCATABLE_PPC32
  720. def_bool y
  721. depends on PPC32 && RELOCATABLE
  722. config PAGE_OFFSET_BOOL
  723. bool "Set custom page offset address"
  724. depends on ADVANCED_OPTIONS
  725. help
  726. This option allows you to set the kernel virtual address at which
  727. the kernel will map low memory. This can be useful in optimizing
  728. the virtual memory layout of the system.
  729. Say N here unless you know what you are doing.
  730. config PAGE_OFFSET
  731. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  732. default "0xc0000000"
  733. config KERNEL_START_BOOL
  734. bool "Set custom kernel base address"
  735. depends on ADVANCED_OPTIONS
  736. help
  737. This option allows you to set the kernel virtual address at which
  738. the kernel will be loaded. Normally this should match PAGE_OFFSET
  739. however there are times (like kdump) that one might not want them
  740. to be the same.
  741. Say N here unless you know what you are doing.
  742. config KERNEL_START
  743. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  744. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  745. default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
  746. default "0xc0000000"
  747. config PHYSICAL_START_BOOL
  748. bool "Set physical address where the kernel is loaded"
  749. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  750. help
  751. This gives the physical address where the kernel is loaded.
  752. Say N here unless you know what you are doing.
  753. config PHYSICAL_START
  754. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  755. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
  756. default "0x00000000"
  757. config PHYSICAL_ALIGN
  758. hex
  759. default "0x04000000" if FSL_BOOKE
  760. help
  761. This value puts the alignment restrictions on physical address
  762. where kernel is loaded and run from. Kernel is compiled for an
  763. address which meets above alignment restriction.
  764. config TASK_SIZE_BOOL
  765. bool "Set custom user task size"
  766. depends on ADVANCED_OPTIONS
  767. help
  768. This option allows you to set the amount of virtual address space
  769. allocated to user tasks. This can be useful in optimizing the
  770. virtual memory layout of the system.
  771. Say N here unless you know what you are doing.
  772. config TASK_SIZE
  773. hex "Size of user task space" if TASK_SIZE_BOOL
  774. default "0x80000000" if PPC_8xx
  775. default "0xc0000000"
  776. config CONSISTENT_SIZE_BOOL
  777. bool "Set custom consistent memory pool size"
  778. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  779. help
  780. This option allows you to set the size of the
  781. consistent memory pool. This pool of virtual memory
  782. is used to make consistent memory allocations.
  783. config CONSISTENT_SIZE
  784. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  785. default "0x00200000" if NOT_COHERENT_CACHE
  786. config PIN_TLB
  787. bool "Pinned Kernel TLBs (860 ONLY)"
  788. depends on ADVANCED_OPTIONS && 8xx
  789. endmenu
  790. if PPC64
  791. config RELOCATABLE
  792. bool "Build a relocatable kernel"
  793. select NONSTATIC_KERNEL
  794. help
  795. This builds a kernel image that is capable of running anywhere
  796. in the RMA (real memory area) at any 16k-aligned base address.
  797. The kernel is linked as a position-independent executable (PIE)
  798. and contains dynamic relocations which are processed early
  799. in the bootup process.
  800. One use is for the kexec on panic case where the recovery kernel
  801. must live at a different physical address than the primary
  802. kernel.
  803. config PAGE_OFFSET
  804. hex
  805. default "0xc000000000000000"
  806. config KERNEL_START
  807. hex
  808. default "0xc000000000000000"
  809. config PHYSICAL_START
  810. hex
  811. default "0x00000000"
  812. endif
  813. source "net/Kconfig"
  814. source "drivers/Kconfig"
  815. source "fs/Kconfig"
  816. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  817. source "lib/Kconfig"
  818. source "arch/powerpc/Kconfig.debug"
  819. source "security/Kconfig"
  820. config KEYS_COMPAT
  821. bool
  822. depends on COMPAT && KEYS
  823. default y
  824. source "crypto/Kconfig"
  825. config PPC_CLOCK
  826. bool
  827. default n
  828. select HAVE_CLK
  829. config PPC_LIB_RHEAP
  830. bool
  831. source "arch/powerpc/kvm/Kconfig"