Kconfig 28 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 ARCH_MIGHT_HAVE_PC_PARPORT
  68. select ARCH_MIGHT_HAVE_PC_SERIO
  69. select BINFMT_ELF
  70. select ARCH_HAS_ELF_RANDOMIZE
  71. select OF
  72. select OF_EARLY_FLATTREE
  73. select OF_RESERVED_MEM
  74. select HAVE_FTRACE_MCOUNT_RECORD
  75. select HAVE_DYNAMIC_FTRACE
  76. select HAVE_FUNCTION_TRACER
  77. select HAVE_FUNCTION_GRAPH_TRACER
  78. select SYSCTL_EXCEPTION_TRACE
  79. select ARCH_WANT_OPTIONAL_GPIOLIB
  80. select VIRT_TO_BUS if !PPC64
  81. select HAVE_IDE
  82. select HAVE_IOREMAP_PROT
  83. select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
  84. select HAVE_KPROBES
  85. select HAVE_ARCH_KGDB
  86. select HAVE_KRETPROBES
  87. select HAVE_ARCH_TRACEHOOK
  88. select HAVE_MEMBLOCK
  89. select HAVE_MEMBLOCK_NODE_MAP
  90. select HAVE_DMA_ATTRS
  91. select HAVE_DMA_API_DEBUG
  92. select HAVE_OPROFILE
  93. select HAVE_DEBUG_KMEMLEAK
  94. select ARCH_HAS_SG_CHAIN
  95. select GENERIC_ATOMIC64 if PPC32
  96. select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  97. select HAVE_PERF_EVENTS
  98. select HAVE_REGS_AND_STACK_ACCESS_API
  99. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  100. select ARCH_WANT_IPC_PARSE_VERSION
  101. select SPARSE_IRQ
  102. select IRQ_DOMAIN
  103. select GENERIC_IRQ_SHOW
  104. select GENERIC_IRQ_SHOW_LEVEL
  105. select IRQ_FORCED_THREADING
  106. select HAVE_RCU_TABLE_FREE if SMP
  107. select HAVE_SYSCALL_TRACEPOINTS
  108. select HAVE_BPF_JIT
  109. select HAVE_ARCH_JUMP_LABEL
  110. select ARCH_HAVE_NMI_SAFE_CMPXCHG
  111. select ARCH_HAS_GCOV_PROFILE_ALL
  112. select GENERIC_SMP_IDLE_THREAD
  113. select GENERIC_CMOS_UPDATE
  114. select GENERIC_TIME_VSYSCALL_OLD
  115. select GENERIC_CLOCKEVENTS
  116. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  117. select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
  118. select GENERIC_STRNCPY_FROM_USER
  119. select GENERIC_STRNLEN_USER
  120. select HAVE_MOD_ARCH_SPECIFIC
  121. select MODULES_USE_ELF_RELA
  122. select CLONE_BACKWARDS
  123. select ARCH_USE_BUILTIN_BSWAP
  124. select OLD_SIGSUSPEND
  125. select OLD_SIGACTION if PPC32
  126. select HAVE_DEBUG_STACKOVERFLOW
  127. select HAVE_IRQ_EXIT_ON_IRQ_STACK
  128. select ARCH_USE_CMPXCHG_LOCKREF if PPC64
  129. select HAVE_ARCH_AUDITSYSCALL
  130. select ARCH_SUPPORTS_ATOMIC_RMW
  131. select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
  132. select NO_BOOTMEM
  133. select HAVE_GENERIC_RCU_GUP
  134. select HAVE_PERF_EVENTS_NMI if PPC64
  135. select EDAC_SUPPORT
  136. select EDAC_ATOMIC_SCRUB
  137. config GENERIC_CSUM
  138. def_bool CPU_LITTLE_ENDIAN
  139. config EARLY_PRINTK
  140. bool
  141. default y
  142. config PANIC_TIMEOUT
  143. int
  144. default 180
  145. config COMPAT
  146. bool
  147. default y if PPC64
  148. select COMPAT_BINFMT_ELF
  149. select ARCH_WANT_OLD_COMPAT_IPC
  150. select COMPAT_OLD_SIGACTION
  151. config SYSVIPC_COMPAT
  152. bool
  153. depends on COMPAT && SYSVIPC
  154. default y
  155. # All PPC32s use generic nvram driver through ppc_md
  156. config GENERIC_NVRAM
  157. bool
  158. default y if PPC32
  159. config SCHED_OMIT_FRAME_POINTER
  160. bool
  161. default y
  162. config ARCH_MAY_HAVE_PC_FDC
  163. bool
  164. default PCI
  165. config PPC_UDBG_16550
  166. bool
  167. default n
  168. config GENERIC_TBSYNC
  169. bool
  170. default y if PPC32 && SMP
  171. default n
  172. config AUDIT_ARCH
  173. bool
  174. default y
  175. config GENERIC_BUG
  176. bool
  177. default y
  178. depends on BUG
  179. config SYS_SUPPORTS_APM_EMULATION
  180. default y if PMAC_APM_EMU
  181. bool
  182. config EPAPR_BOOT
  183. bool
  184. help
  185. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  186. default n
  187. config DEFAULT_UIMAGE
  188. bool
  189. help
  190. Used to allow a board to specify it wants a uImage built by default
  191. default n
  192. config ARCH_HIBERNATION_POSSIBLE
  193. bool
  194. default y
  195. config ARCH_SUSPEND_POSSIBLE
  196. def_bool y
  197. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  198. (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
  199. || 44x || 40x
  200. config PPC_DCR_NATIVE
  201. bool
  202. default n
  203. config PPC_DCR_MMIO
  204. bool
  205. default n
  206. config PPC_DCR
  207. bool
  208. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  209. default y
  210. config PPC_OF_PLATFORM_PCI
  211. bool
  212. depends on PCI
  213. depends on PPC64 # not supported on 32 bits yet
  214. default n
  215. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  216. depends on PPC32 || PPC_STD_MMU_64
  217. def_bool y
  218. config ARCH_SUPPORTS_UPROBES
  219. def_bool y
  220. config PPC_ADV_DEBUG_REGS
  221. bool
  222. depends on 40x || BOOKE
  223. default y
  224. config PPC_ADV_DEBUG_IACS
  225. int
  226. depends on PPC_ADV_DEBUG_REGS
  227. default 4 if 44x
  228. default 2
  229. config PPC_ADV_DEBUG_DACS
  230. int
  231. depends on PPC_ADV_DEBUG_REGS
  232. default 2
  233. config PPC_ADV_DEBUG_DVCS
  234. int
  235. depends on PPC_ADV_DEBUG_REGS
  236. default 2 if 44x
  237. default 0
  238. config PPC_ADV_DEBUG_DAC_RANGE
  239. bool
  240. depends on PPC_ADV_DEBUG_REGS && 44x
  241. default y
  242. config PPC_EMULATE_SSTEP
  243. bool
  244. default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
  245. config ZONE_DMA32
  246. bool
  247. default y if PPC64
  248. config PGTABLE_LEVELS
  249. int
  250. default 2 if !PPC64
  251. default 3 if PPC_64K_PAGES
  252. default 4
  253. source "init/Kconfig"
  254. source "kernel/Kconfig.freezer"
  255. source "arch/powerpc/sysdev/Kconfig"
  256. source "arch/powerpc/platforms/Kconfig"
  257. menu "Kernel options"
  258. config HIGHMEM
  259. bool "High memory support"
  260. depends on PPC32
  261. source kernel/Kconfig.hz
  262. source kernel/Kconfig.preempt
  263. source "fs/Kconfig.binfmt"
  264. config HUGETLB_PAGE_SIZE_VARIABLE
  265. bool
  266. depends on HUGETLB_PAGE
  267. default y
  268. config MATH_EMULATION
  269. bool "Math emulation"
  270. depends on 4xx || 8xx || PPC_MPC832x || BOOKE
  271. ---help---
  272. Some PowerPC chips designed for embedded applications do not have
  273. a floating-point unit and therefore do not implement the
  274. floating-point instructions in the PowerPC instruction set. If you
  275. say Y here, the kernel will include code to emulate a floating-point
  276. unit, which will allow programs that use floating-point
  277. instructions to run.
  278. This is also useful to emulate missing (optional) instructions
  279. such as fsqrt on cores that do have an FPU but do not implement
  280. them (such as Freescale BookE).
  281. choice
  282. prompt "Math emulation options"
  283. default MATH_EMULATION_FULL
  284. depends on MATH_EMULATION
  285. config MATH_EMULATION_FULL
  286. bool "Emulate all the floating point instructions"
  287. ---help---
  288. Select this option will enable the kernel to support to emulate
  289. all the floating point instructions. If your SoC doesn't have
  290. a FPU, you should select this.
  291. config MATH_EMULATION_HW_UNIMPLEMENTED
  292. bool "Just emulate the FPU unimplemented instructions"
  293. ---help---
  294. Select this if you know there does have a hardware FPU on your
  295. SoC, but some floating point instructions are not implemented by that.
  296. endchoice
  297. config PPC_TRANSACTIONAL_MEM
  298. bool "Transactional Memory support for POWERPC"
  299. depends on PPC_BOOK3S_64
  300. depends on SMP
  301. select ALTIVEC
  302. select VSX
  303. default n
  304. ---help---
  305. Support user-mode Transactional Memory on POWERPC.
  306. config IOMMU_HELPER
  307. def_bool PPC64
  308. config SWIOTLB
  309. bool "SWIOTLB support"
  310. default n
  311. select IOMMU_HELPER
  312. ---help---
  313. Support for IO bounce buffering for systems without an IOMMU.
  314. This allows us to DMA to the full physical address space on
  315. platforms where the size of a physical address is larger
  316. than the bus address. Not all platforms support this.
  317. config HOTPLUG_CPU
  318. bool "Support for enabling/disabling CPUs"
  319. depends on SMP && (PPC_PSERIES || \
  320. PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
  321. ---help---
  322. Say Y here to be able to disable and re-enable individual
  323. CPUs at runtime on SMP machines.
  324. Say N if you are unsure.
  325. config ARCH_CPU_PROBE_RELEASE
  326. def_bool y
  327. depends on HOTPLUG_CPU
  328. config ARCH_ENABLE_MEMORY_HOTPLUG
  329. def_bool y
  330. config ARCH_HAS_WALK_MEMORY
  331. def_bool y
  332. config ARCH_ENABLE_MEMORY_HOTREMOVE
  333. def_bool y
  334. config PPC64_SUPPORTS_MEMORY_FAILURE
  335. bool "Add support for memory hwpoison"
  336. depends on PPC_BOOK3S_64
  337. default "y" if PPC_POWERNV
  338. select ARCH_SUPPORTS_MEMORY_FAILURE
  339. config KEXEC
  340. bool "kexec system call"
  341. depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
  342. help
  343. kexec is a system call that implements the ability to shutdown your
  344. current kernel, and to start another kernel. It is like a reboot
  345. but it is independent of the system firmware. And like a reboot
  346. you can start any kernel with it, not just Linux.
  347. The name comes from the similarity to the exec system call.
  348. It is an ongoing process to be certain the hardware in a machine
  349. is properly shutdown, so do not be surprised if this code does not
  350. initially work for you. As of this writing the exact hardware
  351. interface is strongly in flux, so no good recommendation can be
  352. made.
  353. config CRASH_DUMP
  354. bool "Build a kdump crash kernel"
  355. depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
  356. select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
  357. help
  358. Build a kernel suitable for use as a kdump capture kernel.
  359. The same kernel binary can be used as production kernel and dump
  360. capture kernel.
  361. config FA_DUMP
  362. bool "Firmware-assisted dump"
  363. depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
  364. help
  365. A robust mechanism to get reliable kernel crash dump with
  366. assistance from firmware. This approach does not use kexec,
  367. instead firmware assists in booting the kdump kernel
  368. while preserving memory contents. Firmware-assisted dump
  369. is meant to be a kdump replacement offering robustness and
  370. speed not possible without system firmware assistance.
  371. If unsure, say "N"
  372. config IRQ_ALL_CPUS
  373. bool "Distribute interrupts on all CPUs by default"
  374. depends on SMP
  375. help
  376. This option gives the kernel permission to distribute IRQs across
  377. multiple CPUs. Saying N here will route all IRQs to the first
  378. CPU. Generally saying Y is safe, although some problems have been
  379. reported with SMP Power Macintoshes with this option enabled.
  380. config NUMA
  381. bool "NUMA support"
  382. depends on PPC64
  383. default y if SMP && PPC_PSERIES
  384. config NODES_SHIFT
  385. int
  386. default "8" if PPC64
  387. default "4"
  388. depends on NEED_MULTIPLE_NODES
  389. config USE_PERCPU_NUMA_NODE_ID
  390. def_bool y
  391. depends on NUMA
  392. config HAVE_MEMORYLESS_NODES
  393. def_bool y
  394. depends on NUMA
  395. config ARCH_SELECT_MEMORY_MODEL
  396. def_bool y
  397. depends on PPC64
  398. config ARCH_FLATMEM_ENABLE
  399. def_bool y
  400. depends on (PPC64 && !NUMA) || PPC32
  401. config ARCH_SPARSEMEM_ENABLE
  402. def_bool y
  403. depends on PPC64
  404. select SPARSEMEM_VMEMMAP_ENABLE
  405. config ARCH_SPARSEMEM_DEFAULT
  406. def_bool y
  407. depends on (SMP && PPC_PSERIES) || PPC_PS3
  408. config SYS_SUPPORTS_HUGETLBFS
  409. bool
  410. source "mm/Kconfig"
  411. config ARCH_MEMORY_PROBE
  412. def_bool y
  413. depends on MEMORY_HOTPLUG
  414. # Some NUMA nodes have memory ranges that span
  415. # other nodes. Even though a pfn is valid and
  416. # between a node's start and end pfns, it may not
  417. # reside on that node. See memmap_init_zone()
  418. # for details.
  419. config NODES_SPAN_OTHER_NODES
  420. def_bool y
  421. depends on NEED_MULTIPLE_NODES
  422. config PPC_HAS_HASH_64K
  423. bool
  424. depends on PPC64
  425. default n
  426. config STDBINUTILS
  427. bool "Using standard binutils settings"
  428. depends on 44x
  429. default y
  430. help
  431. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  432. Note, that kernel will be able to run only those applications,
  433. which had been compiled using binutils later than 2.17.50.0.3 with
  434. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  435. the older binutils, you can patch them with a trivial patch, which
  436. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  437. choice
  438. prompt "Page size"
  439. default PPC_4K_PAGES
  440. help
  441. Select the kernel logical page size. Increasing the page size
  442. will reduce software overhead at each page boundary, allow
  443. hardware prefetch mechanisms to be more effective, and allow
  444. larger dma transfers increasing IO efficiency and reducing
  445. overhead. However the utilization of memory will increase.
  446. For example, each cached file will using a multiple of the
  447. page size to hold its contents and the difference between the
  448. end of file and the end of page is wasted.
  449. Some dedicated systems, such as software raid serving with
  450. accelerated calculations, have shown significant increases.
  451. If you configure a 64 bit kernel for 64k pages but the
  452. processor does not support them, then the kernel will simulate
  453. them with 4k pages, loading them on demand, but with the
  454. reduced software overhead and larger internal fragmentation.
  455. For the 32 bit kernel, a large page option will not be offered
  456. unless it is supported by the configured processor.
  457. If unsure, choose 4K_PAGES.
  458. config PPC_4K_PAGES
  459. bool "4k page size"
  460. config PPC_16K_PAGES
  461. bool "16k page size" if 44x || PPC_8xx
  462. config PPC_64K_PAGES
  463. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  464. depends on !PPC_FSL_BOOK3E
  465. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  466. config PPC_256K_PAGES
  467. bool "256k page size" if 44x
  468. depends on !STDBINUTILS
  469. help
  470. Make the page size 256k.
  471. As the ELF standard only requires alignment to support page
  472. sizes up to 64k, you will need to compile all of your user
  473. space applications with a non-standard binutils settings
  474. (see the STDBINUTILS description for details).
  475. Say N unless you know what you are doing.
  476. endchoice
  477. config FORCE_MAX_ZONEORDER
  478. int "Maximum zone order"
  479. range 9 64 if PPC64 && PPC_64K_PAGES
  480. default "9" if PPC64 && PPC_64K_PAGES
  481. range 13 64 if PPC64 && !PPC_64K_PAGES
  482. default "13" if PPC64 && !PPC_64K_PAGES
  483. range 9 64 if PPC32 && PPC_16K_PAGES
  484. default "9" if PPC32 && PPC_16K_PAGES
  485. range 7 64 if PPC32 && PPC_64K_PAGES
  486. default "7" if PPC32 && PPC_64K_PAGES
  487. range 5 64 if PPC32 && PPC_256K_PAGES
  488. default "5" if PPC32 && PPC_256K_PAGES
  489. range 11 64
  490. default "11"
  491. help
  492. The kernel memory allocator divides physically contiguous memory
  493. blocks into "zones", where each zone is a power of two number of
  494. pages. This option selects the largest power of two that the kernel
  495. keeps in the memory allocator. If you need to allocate very large
  496. blocks of physically contiguous memory, then you may need to
  497. increase this value.
  498. This config option is actually maximum order plus one. For example,
  499. a value of 11 means that the largest free memory block is 2^10 pages.
  500. The page size is not necessarily 4KB. For example, on 64-bit
  501. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  502. this in mind when choosing a value for this option.
  503. config PPC_SUBPAGE_PROT
  504. bool "Support setting protections for 4k subpages"
  505. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  506. help
  507. This option adds support for a system call to allow user programs
  508. to set access permissions (read/write, readonly, or no access)
  509. on the 4k subpages of each 64k page.
  510. config PPC_COPRO_BASE
  511. bool
  512. default n
  513. config SCHED_SMT
  514. bool "SMT (Hyperthreading) scheduler support"
  515. depends on PPC64 && SMP
  516. help
  517. SMT scheduler support improves the CPU scheduler's decision making
  518. when dealing with POWER5 cpus at a cost of slightly increased
  519. overhead in some places. If unsure say N here.
  520. config PPC_DENORMALISATION
  521. bool "PowerPC denormalisation exception handling"
  522. depends on PPC_BOOK3S_64
  523. default "y" if PPC_POWERNV
  524. ---help---
  525. Add support for handling denormalisation of single precision
  526. values. Useful for bare metal only. If unsure say Y here.
  527. config CMDLINE_BOOL
  528. bool "Default bootloader kernel arguments"
  529. config CMDLINE
  530. string "Initial kernel command string"
  531. depends on CMDLINE_BOOL
  532. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  533. help
  534. On some platforms, there is currently no way for the boot loader to
  535. pass arguments to the kernel. For these platforms, you can supply
  536. some command-line options at build time by entering them here. In
  537. most cases you will need to specify the root device here.
  538. config CMDLINE_FORCE
  539. bool "Always use the default kernel command string"
  540. depends on CMDLINE_BOOL
  541. help
  542. Always use the default kernel command string, even if the boot
  543. loader passes other arguments to the kernel.
  544. This is useful if you cannot or don't want to change the
  545. command-line options your boot loader passes to the kernel.
  546. config EXTRA_TARGETS
  547. string "Additional default image types"
  548. help
  549. List additional targets to be built by the bootwrapper here (separated
  550. by spaces). This is useful for targets that depend of device tree
  551. files in the .dts directory.
  552. Targets in this list will be build as part of the default build
  553. target, or when the user does a 'make zImage' or a
  554. 'make zImage.initrd'.
  555. If unsure, leave blank
  556. config ARCH_WANTS_FREEZER_CONTROL
  557. def_bool y
  558. depends on ADB_PMU
  559. source kernel/power/Kconfig
  560. config SECCOMP
  561. bool "Enable seccomp to safely compute untrusted bytecode"
  562. depends on PROC_FS
  563. default y
  564. help
  565. This kernel feature is useful for number crunching applications
  566. that may need to compute untrusted bytecode during their
  567. execution. By using pipes or other transports made available to
  568. the process as file descriptors supporting the read/write
  569. syscalls, it's possible to isolate those applications in
  570. their own address space using seccomp. Once seccomp is
  571. enabled via /proc/<pid>/seccomp, it cannot be disabled
  572. and the task is only allowed to execute a few safe syscalls
  573. defined by each seccomp mode.
  574. If unsure, say Y. Only embedded should say N here.
  575. endmenu
  576. config ISA_DMA_API
  577. bool
  578. default PCI
  579. menu "Bus options"
  580. config ISA
  581. bool "Support for ISA-bus hardware"
  582. depends on PPC_CHRP
  583. select PPC_I8259
  584. help
  585. Find out whether you have ISA slots on your motherboard. ISA is the
  586. name of a bus system, i.e. the way the CPU talks to the other stuff
  587. inside your box. If you have an Apple machine, say N here; if you
  588. have an IBM RS/6000 or pSeries machine, say Y. If you have an
  589. embedded board, consult your board documentation.
  590. config ZONE_DMA
  591. bool
  592. default y
  593. config NEED_DMA_MAP_STATE
  594. def_bool (PPC64 || NOT_COHERENT_CACHE)
  595. config NEED_SG_DMA_LENGTH
  596. def_bool y
  597. config GENERIC_ISA_DMA
  598. bool
  599. depends on ISA_DMA_API
  600. default y
  601. config PPC_INDIRECT_PCI
  602. bool
  603. depends on PCI
  604. default y if 40x || 44x
  605. default n
  606. config EISA
  607. bool
  608. config SBUS
  609. bool
  610. config FSL_SOC
  611. bool
  612. config FSL_PCI
  613. bool
  614. select PPC_INDIRECT_PCI
  615. select PCI_QUIRKS
  616. config FSL_PMC
  617. bool
  618. default y
  619. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  620. help
  621. Freescale MPC85xx/MPC86xx power management controller support
  622. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  623. config PPC4xx_CPM
  624. bool
  625. default y
  626. depends on SUSPEND && (44x || 40x)
  627. help
  628. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  629. It also enables support for two different idle states (idle-wait
  630. and idle-doze).
  631. config 4xx_SOC
  632. bool
  633. config FSL_LBC
  634. bool "Freescale Local Bus support"
  635. depends on FSL_SOC
  636. help
  637. Enables reporting of errors from the Freescale local bus
  638. controller. Also contains some common code used by
  639. drivers for specific local bus peripherals.
  640. config FSL_GTM
  641. bool
  642. depends on PPC_83xx || QUICC_ENGINE || CPM2
  643. help
  644. Freescale General-purpose Timers support
  645. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  646. config MCA
  647. bool
  648. # Platforms that what PCI turned unconditionally just do select PCI
  649. # in their config node. Platforms that want to choose at config
  650. # time should select PPC_PCI_CHOICE
  651. config PPC_PCI_CHOICE
  652. bool
  653. config PCI
  654. bool "PCI support" if PPC_PCI_CHOICE
  655. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  656. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  657. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  658. select GENERIC_PCI_IOMAP
  659. help
  660. Find out whether your system includes a PCI bus. PCI is the name of
  661. a bus system, i.e. the way the CPU talks to the other stuff inside
  662. your box. If you say Y here, the kernel will include drivers and
  663. infrastructure code to support PCI bus devices.
  664. config PCI_DOMAINS
  665. def_bool PCI
  666. config PCI_SYSCALL
  667. def_bool PCI
  668. config PCI_QSPAN
  669. bool "QSpan PCI"
  670. depends on !4xx && !CPM2 && 8xx
  671. select PPC_I8259
  672. help
  673. Say Y here if you have a system based on a Motorola 8xx-series
  674. embedded processor with a QSPAN PCI interface, otherwise say N.
  675. config PCI_8260
  676. bool
  677. depends on PCI && 8260
  678. select PPC_INDIRECT_PCI
  679. default y
  680. source "drivers/pci/pcie/Kconfig"
  681. source "drivers/pci/Kconfig"
  682. source "drivers/pcmcia/Kconfig"
  683. source "drivers/pci/hotplug/Kconfig"
  684. config HAS_RAPIDIO
  685. bool
  686. default n
  687. config RAPIDIO
  688. tristate "RapidIO support"
  689. depends on HAS_RAPIDIO || PCI
  690. help
  691. If you say Y here, the kernel will include drivers and
  692. infrastructure code to support RapidIO interconnect devices.
  693. config FSL_RIO
  694. bool "Freescale Embedded SRIO Controller support"
  695. depends on RAPIDIO = y && HAS_RAPIDIO
  696. default "n"
  697. ---help---
  698. Include support for RapidIO controller on Freescale embedded
  699. processors (MPC8548, MPC8641, etc).
  700. source "drivers/rapidio/Kconfig"
  701. endmenu
  702. config NONSTATIC_KERNEL
  703. bool
  704. default n
  705. menu "Advanced setup"
  706. depends on PPC32
  707. config ADVANCED_OPTIONS
  708. bool "Prompt for advanced kernel configuration options"
  709. help
  710. This option will enable prompting for a variety of advanced kernel
  711. configuration options. These options can cause the kernel to not
  712. work if they are set incorrectly, but can be used to optimize certain
  713. aspects of kernel memory management.
  714. Unless you know what you are doing, say N here.
  715. comment "Default settings for advanced configuration options are used"
  716. depends on !ADVANCED_OPTIONS
  717. config LOWMEM_SIZE_BOOL
  718. bool "Set maximum low memory"
  719. depends on ADVANCED_OPTIONS
  720. help
  721. This option allows you to set the maximum amount of memory which
  722. will be used as "low memory", that is, memory which the kernel can
  723. access directly, without having to set up a kernel virtual mapping.
  724. This can be useful in optimizing the layout of kernel virtual
  725. memory.
  726. Say N here unless you know what you are doing.
  727. config LOWMEM_SIZE
  728. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  729. default "0x30000000"
  730. config LOWMEM_CAM_NUM_BOOL
  731. bool "Set number of CAMs to use to map low memory"
  732. depends on ADVANCED_OPTIONS && FSL_BOOKE
  733. help
  734. This option allows you to set the maximum number of CAM slots that
  735. will be used to map low memory. There are a limited number of slots
  736. available and even more limited number that will fit in the L1 MMU.
  737. However, using more entries will allow mapping more low memory. This
  738. can be useful in optimizing the layout of kernel virtual memory.
  739. Say N here unless you know what you are doing.
  740. config LOWMEM_CAM_NUM
  741. depends on FSL_BOOKE
  742. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  743. default 3
  744. config DYNAMIC_MEMSTART
  745. bool "Enable page aligned dynamic load address for kernel"
  746. depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
  747. select NONSTATIC_KERNEL
  748. help
  749. This option enables the kernel to be loaded at any page aligned
  750. physical address. The kernel creates a mapping from KERNELBASE to
  751. the address where the kernel is loaded. The page size here implies
  752. the TLB page size of the mapping for kernel on the particular platform.
  753. Please refer to the init code for finding the TLB page size.
  754. DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
  755. kernel image, where the only restriction is the page aligned kernel
  756. load address. When this option is enabled, the compile time physical
  757. address CONFIG_PHYSICAL_START is ignored.
  758. This option is overridden by CONFIG_RELOCATABLE
  759. config RELOCATABLE
  760. bool "Build a relocatable kernel"
  761. depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
  762. select NONSTATIC_KERNEL
  763. help
  764. This builds a kernel image that is capable of running at the
  765. location the kernel is loaded at, without any alignment restrictions.
  766. This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
  767. One use is for the kexec on panic case where the recovery kernel
  768. must live at a different physical address than the primary
  769. kernel.
  770. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  771. it has been loaded at and the compile time physical addresses
  772. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  773. setting can still be useful to bootwrappers that need to know the
  774. load address of the kernel (eg. u-boot/mkimage).
  775. config RELOCATABLE_PPC32
  776. def_bool y
  777. depends on PPC32 && RELOCATABLE
  778. config PAGE_OFFSET_BOOL
  779. bool "Set custom page offset address"
  780. depends on ADVANCED_OPTIONS
  781. help
  782. This option allows you to set the kernel virtual address at which
  783. the kernel will map low memory. This can be useful in optimizing
  784. the virtual memory layout of the system.
  785. Say N here unless you know what you are doing.
  786. config PAGE_OFFSET
  787. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  788. default "0xc0000000"
  789. config KERNEL_START_BOOL
  790. bool "Set custom kernel base address"
  791. depends on ADVANCED_OPTIONS
  792. help
  793. This option allows you to set the kernel virtual address at which
  794. the kernel will be loaded. Normally this should match PAGE_OFFSET
  795. however there are times (like kdump) that one might not want them
  796. to be the same.
  797. Say N here unless you know what you are doing.
  798. config KERNEL_START
  799. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  800. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  801. default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
  802. default "0xc0000000"
  803. config PHYSICAL_START_BOOL
  804. bool "Set physical address where the kernel is loaded"
  805. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  806. help
  807. This gives the physical address where the kernel is loaded.
  808. Say N here unless you know what you are doing.
  809. config PHYSICAL_START
  810. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  811. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
  812. default "0x00000000"
  813. config PHYSICAL_ALIGN
  814. hex
  815. default "0x04000000" if FSL_BOOKE
  816. help
  817. This value puts the alignment restrictions on physical address
  818. where kernel is loaded and run from. Kernel is compiled for an
  819. address which meets above alignment restriction.
  820. config TASK_SIZE_BOOL
  821. bool "Set custom user task size"
  822. depends on ADVANCED_OPTIONS
  823. help
  824. This option allows you to set the amount of virtual address space
  825. allocated to user tasks. This can be useful in optimizing the
  826. virtual memory layout of the system.
  827. Say N here unless you know what you are doing.
  828. config TASK_SIZE
  829. hex "Size of user task space" if TASK_SIZE_BOOL
  830. default "0x80000000" if PPC_8xx
  831. default "0xc0000000"
  832. config CONSISTENT_SIZE_BOOL
  833. bool "Set custom consistent memory pool size"
  834. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  835. help
  836. This option allows you to set the size of the
  837. consistent memory pool. This pool of virtual memory
  838. is used to make consistent memory allocations.
  839. config CONSISTENT_SIZE
  840. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  841. default "0x00200000" if NOT_COHERENT_CACHE
  842. config PIN_TLB
  843. bool "Pinned Kernel TLBs (860 ONLY)"
  844. depends on ADVANCED_OPTIONS && 8xx
  845. endmenu
  846. if PPC64
  847. config RELOCATABLE
  848. bool "Build a relocatable kernel"
  849. depends on !COMPILE_TEST
  850. select NONSTATIC_KERNEL
  851. help
  852. This builds a kernel image that is capable of running anywhere
  853. in the RMA (real memory area) at any 16k-aligned base address.
  854. The kernel is linked as a position-independent executable (PIE)
  855. and contains dynamic relocations which are processed early
  856. in the bootup process.
  857. One use is for the kexec on panic case where the recovery kernel
  858. must live at a different physical address than the primary
  859. kernel.
  860. # This value must have zeroes in the bottom 60 bits otherwise lots will break
  861. config PAGE_OFFSET
  862. hex
  863. default "0xc000000000000000"
  864. config KERNEL_START
  865. hex
  866. default "0xc000000000000000"
  867. config PHYSICAL_START
  868. hex
  869. default "0x00000000"
  870. endif
  871. config ARCH_RANDOM
  872. def_bool n
  873. source "net/Kconfig"
  874. source "drivers/Kconfig"
  875. source "fs/Kconfig"
  876. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  877. source "lib/Kconfig"
  878. source "arch/powerpc/Kconfig.debug"
  879. source "security/Kconfig"
  880. config KEYS_COMPAT
  881. bool
  882. depends on COMPAT && KEYS
  883. default y
  884. source "crypto/Kconfig"
  885. config PPC_LIB_RHEAP
  886. bool
  887. source "arch/powerpc/kvm/Kconfig"