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 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 ARCH_HAS_CPU_IDLE_WAIT
  68. bool
  69. default y
  70. config GENERIC_HWEIGHT
  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_MEMBLOCK_NODE_MAP
  98. select HAVE_DMA_ATTRS
  99. select HAVE_DMA_API_DEBUG
  100. select USE_GENERIC_SMP_HELPERS if SMP
  101. select HAVE_OPROFILE
  102. select HAVE_SYSCALL_WRAPPERS if PPC64
  103. select GENERIC_ATOMIC64 if PPC32
  104. select HAVE_IRQ_WORK
  105. select HAVE_PERF_EVENTS
  106. select HAVE_REGS_AND_STACK_ACCESS_API
  107. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  108. select HAVE_GENERIC_HARDIRQS
  109. select SPARSE_IRQ
  110. select IRQ_PER_CPU
  111. select IRQ_DOMAIN
  112. select GENERIC_IRQ_SHOW
  113. select GENERIC_IRQ_SHOW_LEVEL
  114. select IRQ_FORCED_THREADING
  115. select HAVE_RCU_TABLE_FREE if SMP
  116. select HAVE_SYSCALL_TRACEPOINTS
  117. select HAVE_BPF_JIT if (PPC64 && NET)
  118. select HAVE_ARCH_JUMP_LABEL
  119. select ARCH_HAVE_NMI_SAFE_CMPXCHG
  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. config SYSVIPC_COMPAT
  129. bool
  130. depends on COMPAT && SYSVIPC
  131. default y
  132. # All PPC32s use generic nvram driver through ppc_md
  133. config GENERIC_NVRAM
  134. bool
  135. default y if PPC32
  136. config SCHED_OMIT_FRAME_POINTER
  137. bool
  138. default y
  139. config ARCH_MAY_HAVE_PC_FDC
  140. bool
  141. default !PPC_PSERIES || PCI
  142. config PPC_OF
  143. def_bool y
  144. config PPC_UDBG_16550
  145. bool
  146. default n
  147. config GENERIC_TBSYNC
  148. bool
  149. default y if PPC32 && SMP
  150. default n
  151. config AUDIT_ARCH
  152. bool
  153. default y
  154. config GENERIC_BUG
  155. bool
  156. default y
  157. depends on BUG
  158. config SYS_SUPPORTS_APM_EMULATION
  159. default y if PMAC_APM_EMU
  160. bool
  161. config EPAPR_BOOT
  162. bool
  163. help
  164. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  165. default n
  166. config DEFAULT_UIMAGE
  167. bool
  168. help
  169. Used to allow a board to specify it wants a uImage built by default
  170. default n
  171. config REDBOOT
  172. bool
  173. config ARCH_HIBERNATION_POSSIBLE
  174. bool
  175. default y
  176. config ARCH_SUSPEND_POSSIBLE
  177. def_bool y
  178. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  179. (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
  180. config PPC_DCR_NATIVE
  181. bool
  182. default n
  183. config PPC_DCR_MMIO
  184. bool
  185. default n
  186. config PPC_DCR
  187. bool
  188. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  189. default y
  190. config PPC_OF_PLATFORM_PCI
  191. bool
  192. depends on PCI
  193. depends on PPC64 # not supported on 32 bits yet
  194. default n
  195. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  196. def_bool y
  197. config PPC_ADV_DEBUG_REGS
  198. bool
  199. depends on 40x || BOOKE
  200. default y
  201. config PPC_ADV_DEBUG_IACS
  202. int
  203. depends on PPC_ADV_DEBUG_REGS
  204. default 4 if 44x
  205. default 2
  206. config PPC_ADV_DEBUG_DACS
  207. int
  208. depends on PPC_ADV_DEBUG_REGS
  209. default 2
  210. config PPC_ADV_DEBUG_DVCS
  211. int
  212. depends on PPC_ADV_DEBUG_REGS
  213. default 2 if 44x
  214. default 0
  215. config PPC_ADV_DEBUG_DAC_RANGE
  216. bool
  217. depends on PPC_ADV_DEBUG_REGS && 44x
  218. default y
  219. source "init/Kconfig"
  220. source "kernel/Kconfig.freezer"
  221. source "arch/powerpc/sysdev/Kconfig"
  222. source "arch/powerpc/platforms/Kconfig"
  223. menu "Kernel options"
  224. config HIGHMEM
  225. bool "High memory support"
  226. depends on PPC32
  227. source kernel/time/Kconfig
  228. source kernel/Kconfig.hz
  229. source kernel/Kconfig.preempt
  230. source "fs/Kconfig.binfmt"
  231. config HUGETLB_PAGE_SIZE_VARIABLE
  232. bool
  233. depends on HUGETLB_PAGE
  234. default y
  235. config MATH_EMULATION
  236. bool "Math emulation"
  237. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  238. ---help---
  239. Some PowerPC chips designed for embedded applications do not have
  240. a floating-point unit and therefore do not implement the
  241. floating-point instructions in the PowerPC instruction set. If you
  242. say Y here, the kernel will include code to emulate a floating-point
  243. unit, which will allow programs that use floating-point
  244. instructions to run.
  245. config 8XX_MINIMAL_FPEMU
  246. bool "Minimal math emulation for 8xx"
  247. depends on 8xx && !MATH_EMULATION
  248. help
  249. Older arch/ppc kernels still emulated a few floating point
  250. instructions such as load and store, even when full math
  251. emulation is disabled. Say "Y" here if you want to preserve
  252. this behavior.
  253. It is recommended that you build a soft-float userspace instead.
  254. config IOMMU_HELPER
  255. def_bool PPC64
  256. config SWIOTLB
  257. bool "SWIOTLB support"
  258. default n
  259. select IOMMU_HELPER
  260. ---help---
  261. Support for IO bounce buffering for systems without an IOMMU.
  262. This allows us to DMA to the full physical address space on
  263. platforms where the size of a physical address is larger
  264. than the bus address. Not all platforms support this.
  265. config HOTPLUG_CPU
  266. bool "Support for enabling/disabling CPUs"
  267. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
  268. ---help---
  269. Say Y here to be able to disable and re-enable individual
  270. CPUs at runtime on SMP machines.
  271. Say N if you are unsure.
  272. config ARCH_CPU_PROBE_RELEASE
  273. def_bool y
  274. depends on HOTPLUG_CPU
  275. config ARCH_ENABLE_MEMORY_HOTPLUG
  276. def_bool y
  277. config ARCH_HAS_WALK_MEMORY
  278. def_bool y
  279. config ARCH_ENABLE_MEMORY_HOTREMOVE
  280. def_bool y
  281. config KEXEC
  282. bool "kexec system call (EXPERIMENTAL)"
  283. depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL
  284. help
  285. kexec is a system call that implements the ability to shutdown your
  286. current kernel, and to start another kernel. It is like a reboot
  287. but it is independent of the system firmware. And like a reboot
  288. you can start any kernel with it, not just Linux.
  289. The name comes from the similarity to the exec system call.
  290. It is an ongoing process to be certain the hardware in a machine
  291. is properly shutdown, so do not be surprised if this code does not
  292. initially work for you. It may help to enable device hotplugging
  293. support. As of this writing the exact hardware interface is
  294. strongly in flux, so no good recommendation can be made.
  295. config CRASH_DUMP
  296. bool "Build a kdump crash kernel"
  297. depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x)
  298. select RELOCATABLE if PPC64 || 44x
  299. select DYNAMIC_MEMSTART if FSL_BOOKE
  300. help
  301. Build a kernel suitable for use as a kdump capture kernel.
  302. The same kernel binary can be used as production kernel and dump
  303. capture kernel.
  304. config FA_DUMP
  305. bool "Firmware-assisted dump"
  306. depends on PPC64 && PPC_RTAS && CRASH_DUMP
  307. help
  308. A robust mechanism to get reliable kernel crash dump with
  309. assistance from firmware. This approach does not use kexec,
  310. instead firmware assists in booting the kdump kernel
  311. while preserving memory contents. Firmware-assisted dump
  312. is meant to be a kdump replacement offering robustness and
  313. speed not possible without system firmware assistance.
  314. If unsure, say "N"
  315. config IRQ_ALL_CPUS
  316. bool "Distribute interrupts on all CPUs by default"
  317. depends on SMP && !MV64360
  318. help
  319. This option gives the kernel permission to distribute IRQs across
  320. multiple CPUs. Saying N here will route all IRQs to the first
  321. CPU. Generally saying Y is safe, although some problems have been
  322. reported with SMP Power Macintoshes with this option enabled.
  323. config NUMA
  324. bool "NUMA support"
  325. depends on PPC64
  326. default y if SMP && PPC_PSERIES
  327. config NODES_SHIFT
  328. int
  329. default "8" if PPC64
  330. default "4"
  331. depends on NEED_MULTIPLE_NODES
  332. config MAX_ACTIVE_REGIONS
  333. int
  334. default "256" if PPC64
  335. default "32"
  336. config ARCH_SELECT_MEMORY_MODEL
  337. def_bool y
  338. depends on PPC64
  339. config ARCH_FLATMEM_ENABLE
  340. def_bool y
  341. depends on (PPC64 && !NUMA) || PPC32
  342. config ARCH_SPARSEMEM_ENABLE
  343. def_bool y
  344. depends on PPC64
  345. select SPARSEMEM_VMEMMAP_ENABLE
  346. config ARCH_SPARSEMEM_DEFAULT
  347. def_bool y
  348. depends on (SMP && PPC_PSERIES) || PPC_PS3
  349. config SYS_SUPPORTS_HUGETLBFS
  350. bool
  351. source "mm/Kconfig"
  352. config ARCH_MEMORY_PROBE
  353. def_bool y
  354. depends on MEMORY_HOTPLUG
  355. # Some NUMA nodes have memory ranges that span
  356. # other nodes. Even though a pfn is valid and
  357. # between a node's start and end pfns, it may not
  358. # reside on that node. See memmap_init_zone()
  359. # for details.
  360. config NODES_SPAN_OTHER_NODES
  361. def_bool y
  362. depends on NEED_MULTIPLE_NODES
  363. config PPC_HAS_HASH_64K
  364. bool
  365. depends on PPC64
  366. default n
  367. config STDBINUTILS
  368. bool "Using standard binutils settings"
  369. depends on 44x
  370. default y
  371. help
  372. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  373. Note, that kernel will be able to run only those applications,
  374. which had been compiled using binutils later than 2.17.50.0.3 with
  375. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  376. the older binutils, you can patch them with a trivial patch, which
  377. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  378. choice
  379. prompt "Page size"
  380. default PPC_4K_PAGES
  381. help
  382. Select the kernel logical page size. Increasing the page size
  383. will reduce software overhead at each page boundary, allow
  384. hardware prefetch mechanisms to be more effective, and allow
  385. larger dma transfers increasing IO efficiency and reducing
  386. overhead. However the utilization of memory will increase.
  387. For example, each cached file will using a multiple of the
  388. page size to hold its contents and the difference between the
  389. end of file and the end of page is wasted.
  390. Some dedicated systems, such as software raid serving with
  391. accelerated calculations, have shown significant increases.
  392. If you configure a 64 bit kernel for 64k pages but the
  393. processor does not support them, then the kernel will simulate
  394. them with 4k pages, loading them on demand, but with the
  395. reduced software overhead and larger internal fragmentation.
  396. For the 32 bit kernel, a large page option will not be offered
  397. unless it is supported by the configured processor.
  398. If unsure, choose 4K_PAGES.
  399. config PPC_4K_PAGES
  400. bool "4k page size"
  401. config PPC_16K_PAGES
  402. bool "16k page size" if 44x
  403. config PPC_64K_PAGES
  404. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  405. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  406. config PPC_256K_PAGES
  407. bool "256k page size" if 44x
  408. depends on !STDBINUTILS
  409. help
  410. Make the page size 256k.
  411. As the ELF standard only requires alignment to support page
  412. sizes up to 64k, you will need to compile all of your user
  413. space applications with a non-standard binutils settings
  414. (see the STDBINUTILS description for details).
  415. Say N unless you know what you are doing.
  416. endchoice
  417. config FORCE_MAX_ZONEORDER
  418. int "Maximum zone order"
  419. range 9 64 if PPC64 && PPC_64K_PAGES
  420. default "9" if PPC64 && PPC_64K_PAGES
  421. range 13 64 if PPC64 && !PPC_64K_PAGES
  422. default "13" if PPC64 && !PPC_64K_PAGES
  423. range 9 64 if PPC32 && PPC_16K_PAGES
  424. default "9" if PPC32 && PPC_16K_PAGES
  425. range 7 64 if PPC32 && PPC_64K_PAGES
  426. default "7" if PPC32 && PPC_64K_PAGES
  427. range 5 64 if PPC32 && PPC_256K_PAGES
  428. default "5" if PPC32 && PPC_256K_PAGES
  429. range 11 64
  430. default "11"
  431. help
  432. The kernel memory allocator divides physically contiguous memory
  433. blocks into "zones", where each zone is a power of two number of
  434. pages. This option selects the largest power of two that the kernel
  435. keeps in the memory allocator. If you need to allocate very large
  436. blocks of physically contiguous memory, then you may need to
  437. increase this value.
  438. This config option is actually maximum order plus one. For example,
  439. a value of 11 means that the largest free memory block is 2^10 pages.
  440. The page size is not necessarily 4KB. For example, on 64-bit
  441. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  442. this in mind when choosing a value for this option.
  443. config PPC_SUBPAGE_PROT
  444. bool "Support setting protections for 4k subpages"
  445. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  446. help
  447. This option adds support for a system call to allow user programs
  448. to set access permissions (read/write, readonly, or no access)
  449. on the 4k subpages of each 64k page.
  450. config SCHED_SMT
  451. bool "SMT (Hyperthreading) scheduler support"
  452. depends on PPC64 && SMP
  453. help
  454. SMT scheduler support improves the CPU scheduler's decision making
  455. when dealing with POWER5 cpus at a cost of slightly increased
  456. overhead in some places. If unsure say N here.
  457. config CMDLINE_BOOL
  458. bool "Default bootloader kernel arguments"
  459. config CMDLINE
  460. string "Initial kernel command string"
  461. depends on CMDLINE_BOOL
  462. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  463. help
  464. On some platforms, there is currently no way for the boot loader to
  465. pass arguments to the kernel. For these platforms, you can supply
  466. some command-line options at build time by entering them here. In
  467. most cases you will need to specify the root device here.
  468. config EXTRA_TARGETS
  469. string "Additional default image types"
  470. help
  471. List additional targets to be built by the bootwrapper here (separated
  472. by spaces). This is useful for targets that depend of device tree
  473. files in the .dts directory.
  474. Targets in this list will be build as part of the default build
  475. target, or when the user does a 'make zImage' or a
  476. 'make zImage.initrd'.
  477. If unsure, leave blank
  478. config ARCH_WANTS_FREEZER_CONTROL
  479. def_bool y
  480. depends on ADB_PMU
  481. source kernel/power/Kconfig
  482. config SECCOMP
  483. bool "Enable seccomp to safely compute untrusted bytecode"
  484. depends on PROC_FS
  485. default y
  486. help
  487. This kernel feature is useful for number crunching applications
  488. that may need to compute untrusted bytecode during their
  489. execution. By using pipes or other transports made available to
  490. the process as file descriptors supporting the read/write
  491. syscalls, it's possible to isolate those applications in
  492. their own address space using seccomp. Once seccomp is
  493. enabled via /proc/<pid>/seccomp, it cannot be disabled
  494. and the task is only allowed to execute a few safe syscalls
  495. defined by each seccomp mode.
  496. If unsure, say Y. Only embedded should say N here.
  497. endmenu
  498. config ISA_DMA_API
  499. bool
  500. default PCI
  501. menu "Bus options"
  502. config ISA
  503. bool "Support for ISA-bus hardware"
  504. depends on PPC_PREP || PPC_CHRP
  505. select PPC_I8259
  506. help
  507. Find out whether you have ISA slots on your motherboard. ISA is the
  508. name of a bus system, i.e. the way the CPU talks to the other stuff
  509. inside your box. If you have an Apple machine, say N here; if you
  510. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  511. you have an embedded board, consult your board documentation.
  512. config ZONE_DMA
  513. bool
  514. default y
  515. config NEED_DMA_MAP_STATE
  516. def_bool (PPC64 || NOT_COHERENT_CACHE)
  517. config NEED_SG_DMA_LENGTH
  518. def_bool y
  519. config GENERIC_ISA_DMA
  520. bool
  521. depends on ISA_DMA_API
  522. default y
  523. config PPC_INDIRECT_PCI
  524. bool
  525. depends on PCI
  526. default y if 40x || 44x
  527. default n
  528. config EISA
  529. bool
  530. config SBUS
  531. bool
  532. config FSL_SOC
  533. bool
  534. select HAVE_CAN_FLEXCAN if NET && CAN
  535. select PPC_CLOCK if CAN_FLEXCAN
  536. config FSL_PCI
  537. bool
  538. select PPC_INDIRECT_PCI
  539. select PCI_QUIRKS
  540. config FSL_PMC
  541. bool
  542. default y
  543. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  544. help
  545. Freescale MPC85xx/MPC86xx power management controller support
  546. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  547. config PPC4xx_CPM
  548. bool
  549. default y
  550. depends on SUSPEND && (44x || 40x)
  551. help
  552. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  553. It also enables support for two different idle states (idle-wait
  554. and idle-doze).
  555. config 4xx_SOC
  556. bool
  557. config FSL_LBC
  558. bool "Freescale Local Bus support"
  559. depends on FSL_SOC
  560. help
  561. Enables reporting of errors from the Freescale local bus
  562. controller. Also contains some common code used by
  563. drivers for specific local bus peripherals.
  564. config FSL_IFC
  565. bool
  566. depends on FSL_SOC
  567. config FSL_GTM
  568. bool
  569. depends on PPC_83xx || QUICC_ENGINE || CPM2
  570. help
  571. Freescale General-purpose Timers support
  572. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  573. config MCA
  574. bool
  575. # Platforms that what PCI turned unconditionally just do select PCI
  576. # in their config node. Platforms that want to choose at config
  577. # time should select PPC_PCI_CHOICE
  578. config PPC_PCI_CHOICE
  579. bool
  580. config PCI
  581. bool "PCI support" if PPC_PCI_CHOICE
  582. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  583. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  584. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  585. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  586. select ARCH_SUPPORTS_MSI
  587. select GENERIC_PCI_IOMAP
  588. help
  589. Find out whether your system includes a PCI bus. PCI is the name of
  590. a bus system, i.e. the way the CPU talks to the other stuff inside
  591. your box. If you say Y here, the kernel will include drivers and
  592. infrastructure code to support PCI bus devices.
  593. config PCI_DOMAINS
  594. def_bool PCI
  595. config PCI_SYSCALL
  596. def_bool PCI
  597. config PCI_QSPAN
  598. bool "QSpan PCI"
  599. depends on !4xx && !CPM2 && 8xx
  600. select PPC_I8259
  601. help
  602. Say Y here if you have a system based on a Motorola 8xx-series
  603. embedded processor with a QSPAN PCI interface, otherwise say N.
  604. config PCI_8260
  605. bool
  606. depends on PCI && 8260
  607. select PPC_INDIRECT_PCI
  608. default y
  609. config 8260_PCI9
  610. bool "Enable workaround for MPC826x erratum PCI 9"
  611. depends on PCI_8260 && !8272
  612. default y
  613. source "drivers/pci/pcie/Kconfig"
  614. source "drivers/pci/Kconfig"
  615. source "drivers/pcmcia/Kconfig"
  616. source "drivers/pci/hotplug/Kconfig"
  617. config HAS_RAPIDIO
  618. bool
  619. default n
  620. config RAPIDIO
  621. bool "RapidIO support"
  622. depends on HAS_RAPIDIO || PCI
  623. help
  624. If you say Y here, the kernel will include drivers and
  625. infrastructure code to support RapidIO interconnect devices.
  626. config FSL_RIO
  627. bool "Freescale Embedded SRIO Controller support"
  628. depends on RAPIDIO && HAS_RAPIDIO
  629. default "n"
  630. ---help---
  631. Include support for RapidIO controller on Freescale embedded
  632. processors (MPC8548, MPC8641, etc).
  633. source "drivers/rapidio/Kconfig"
  634. endmenu
  635. config NONSTATIC_KERNEL
  636. bool
  637. default n
  638. menu "Advanced setup"
  639. depends on PPC32
  640. config ADVANCED_OPTIONS
  641. bool "Prompt for advanced kernel configuration options"
  642. help
  643. This option will enable prompting for a variety of advanced kernel
  644. configuration options. These options can cause the kernel to not
  645. work if they are set incorrectly, but can be used to optimize certain
  646. aspects of kernel memory management.
  647. Unless you know what you are doing, say N here.
  648. comment "Default settings for advanced configuration options are used"
  649. depends on !ADVANCED_OPTIONS
  650. config LOWMEM_SIZE_BOOL
  651. bool "Set maximum low memory"
  652. depends on ADVANCED_OPTIONS
  653. help
  654. This option allows you to set the maximum amount of memory which
  655. will be used as "low memory", that is, memory which the kernel can
  656. access directly, without having to set up a kernel virtual mapping.
  657. This can be useful in optimizing the layout of kernel virtual
  658. memory.
  659. Say N here unless you know what you are doing.
  660. config LOWMEM_SIZE
  661. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  662. default "0x30000000"
  663. config LOWMEM_CAM_NUM_BOOL
  664. bool "Set number of CAMs to use to map low memory"
  665. depends on ADVANCED_OPTIONS && FSL_BOOKE
  666. help
  667. This option allows you to set the maximum number of CAM slots that
  668. will be used to map low memory. There are a limited number of slots
  669. available and even more limited number that will fit in the L1 MMU.
  670. However, using more entries will allow mapping more low memory. This
  671. can be useful in optimizing the layout of kernel virtual memory.
  672. Say N here unless you know what you are doing.
  673. config LOWMEM_CAM_NUM
  674. depends on FSL_BOOKE
  675. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  676. default 3
  677. config DYNAMIC_MEMSTART
  678. bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
  679. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
  680. select NONSTATIC_KERNEL
  681. help
  682. This option enables the kernel to be loaded at any page aligned
  683. physical address. The kernel creates a mapping from KERNELBASE to
  684. the address where the kernel is loaded. The page size here implies
  685. the TLB page size of the mapping for kernel on the particular platform.
  686. Please refer to the init code for finding the TLB page size.
  687. DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
  688. kernel image, where the only restriction is the page aligned kernel
  689. load address. When this option is enabled, the compile time physical
  690. address CONFIG_PHYSICAL_START is ignored.
  691. This option is overridden by CONFIG_RELOCATABLE
  692. config RELOCATABLE
  693. bool "Build a relocatable kernel (EXPERIMENTAL)"
  694. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
  695. select NONSTATIC_KERNEL
  696. help
  697. This builds a kernel image that is capable of running at the
  698. location the kernel is loaded at, without any alignment restrictions.
  699. This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
  700. One use is for the kexec on panic case where the recovery kernel
  701. must live at a different physical address than the primary
  702. kernel.
  703. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  704. it has been loaded at and the compile time physical addresses
  705. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  706. setting can still be useful to bootwrappers that need to know the
  707. load address of the kernel (eg. u-boot/mkimage).
  708. config RELOCATABLE_PPC32
  709. def_bool y
  710. depends on PPC32 && RELOCATABLE
  711. config PAGE_OFFSET_BOOL
  712. bool "Set custom page offset address"
  713. depends on ADVANCED_OPTIONS
  714. help
  715. This option allows you to set the kernel virtual address at which
  716. the kernel will map low memory. This can be useful in optimizing
  717. the virtual memory layout of the system.
  718. Say N here unless you know what you are doing.
  719. config PAGE_OFFSET
  720. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  721. default "0xc0000000"
  722. config KERNEL_START_BOOL
  723. bool "Set custom kernel base 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 be loaded. Normally this should match PAGE_OFFSET
  728. however there are times (like kdump) that one might not want them
  729. to be the same.
  730. Say N here unless you know what you are doing.
  731. config KERNEL_START
  732. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  733. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  734. default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
  735. default "0xc0000000"
  736. config PHYSICAL_START_BOOL
  737. bool "Set physical address where the kernel is loaded"
  738. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  739. help
  740. This gives the physical address where the kernel is loaded.
  741. Say N here unless you know what you are doing.
  742. config PHYSICAL_START
  743. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  744. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
  745. default "0x00000000"
  746. config PHYSICAL_ALIGN
  747. hex
  748. default "0x04000000" if FSL_BOOKE
  749. help
  750. This value puts the alignment restrictions on physical address
  751. where kernel is loaded and run from. Kernel is compiled for an
  752. address which meets above alignment restriction.
  753. config TASK_SIZE_BOOL
  754. bool "Set custom user task size"
  755. depends on ADVANCED_OPTIONS
  756. help
  757. This option allows you to set the amount of virtual address space
  758. allocated to user tasks. This can be useful in optimizing the
  759. virtual memory layout of the system.
  760. Say N here unless you know what you are doing.
  761. config TASK_SIZE
  762. hex "Size of user task space" if TASK_SIZE_BOOL
  763. default "0x80000000" if PPC_PREP || PPC_8xx
  764. default "0xc0000000"
  765. config CONSISTENT_SIZE_BOOL
  766. bool "Set custom consistent memory pool size"
  767. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  768. help
  769. This option allows you to set the size of the
  770. consistent memory pool. This pool of virtual memory
  771. is used to make consistent memory allocations.
  772. config CONSISTENT_SIZE
  773. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  774. default "0x00200000" if NOT_COHERENT_CACHE
  775. config PIN_TLB
  776. bool "Pinned Kernel TLBs (860 ONLY)"
  777. depends on ADVANCED_OPTIONS && 8xx
  778. endmenu
  779. if PPC64
  780. config RELOCATABLE
  781. bool "Build a relocatable kernel"
  782. select NONSTATIC_KERNEL
  783. help
  784. This builds a kernel image that is capable of running anywhere
  785. in the RMA (real memory area) at any 16k-aligned base address.
  786. The kernel is linked as a position-independent executable (PIE)
  787. and contains dynamic relocations which are processed early
  788. in the bootup process.
  789. One use is for the kexec on panic case where the recovery kernel
  790. must live at a different physical address than the primary
  791. kernel.
  792. # This value must have zeroes in the bottom 60 bits otherwise lots will break
  793. config PAGE_OFFSET
  794. hex
  795. default "0xc000000000000000"
  796. config KERNEL_START
  797. hex
  798. default "0xc000000000000000"
  799. config PHYSICAL_START
  800. hex
  801. default "0x00000000"
  802. endif
  803. source "net/Kconfig"
  804. source "drivers/Kconfig"
  805. source "fs/Kconfig"
  806. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  807. source "lib/Kconfig"
  808. source "arch/powerpc/Kconfig.debug"
  809. source "security/Kconfig"
  810. config KEYS_COMPAT
  811. bool
  812. depends on COMPAT && KEYS
  813. default y
  814. source "crypto/Kconfig"
  815. config PPC_CLOCK
  816. bool
  817. default n
  818. select HAVE_CLK
  819. config PPC_LIB_RHEAP
  820. bool
  821. source "arch/powerpc/kvm/Kconfig"