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