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 ARCH_HAS_DMA_SET_COHERENT_MASK
  65. bool
  66. config PPC
  67. bool
  68. default y
  69. select ARCH_MIGHT_HAVE_PC_PARPORT
  70. select ARCH_MIGHT_HAVE_PC_SERIO
  71. select BINFMT_ELF
  72. select ARCH_HAS_ELF_RANDOMIZE
  73. select OF
  74. select OF_EARLY_FLATTREE
  75. select OF_RESERVED_MEM
  76. select HAVE_FTRACE_MCOUNT_RECORD
  77. select HAVE_DYNAMIC_FTRACE
  78. select HAVE_FUNCTION_TRACER
  79. select HAVE_FUNCTION_GRAPH_TRACER
  80. select SYSCTL_EXCEPTION_TRACE
  81. select ARCH_WANT_OPTIONAL_GPIOLIB
  82. select VIRT_TO_BUS if !PPC64
  83. select HAVE_IDE
  84. select HAVE_IOREMAP_PROT
  85. select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
  86. select HAVE_KPROBES
  87. select HAVE_ARCH_KGDB
  88. select HAVE_KRETPROBES
  89. select HAVE_ARCH_TRACEHOOK
  90. select HAVE_MEMBLOCK
  91. select HAVE_MEMBLOCK_NODE_MAP
  92. select HAVE_DMA_ATTRS
  93. select HAVE_DMA_API_DEBUG
  94. select HAVE_OPROFILE
  95. select HAVE_DEBUG_KMEMLEAK
  96. select ARCH_HAS_SG_CHAIN
  97. select GENERIC_ATOMIC64 if PPC32
  98. select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  99. select HAVE_PERF_EVENTS
  100. select HAVE_REGS_AND_STACK_ACCESS_API
  101. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  102. select ARCH_WANT_IPC_PARSE_VERSION
  103. select SPARSE_IRQ
  104. select IRQ_DOMAIN
  105. select GENERIC_IRQ_SHOW
  106. select GENERIC_IRQ_SHOW_LEVEL
  107. select IRQ_FORCED_THREADING
  108. select HAVE_RCU_TABLE_FREE if SMP
  109. select HAVE_SYSCALL_TRACEPOINTS
  110. select HAVE_BPF_JIT
  111. select HAVE_ARCH_JUMP_LABEL
  112. select ARCH_HAVE_NMI_SAFE_CMPXCHG
  113. select ARCH_HAS_GCOV_PROFILE_ALL
  114. select GENERIC_SMP_IDLE_THREAD
  115. select GENERIC_CMOS_UPDATE
  116. select GENERIC_TIME_VSYSCALL_OLD
  117. select GENERIC_CLOCKEVENTS
  118. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  119. select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
  120. select GENERIC_STRNCPY_FROM_USER
  121. select GENERIC_STRNLEN_USER
  122. select HAVE_MOD_ARCH_SPECIFIC
  123. select MODULES_USE_ELF_RELA
  124. select CLONE_BACKWARDS
  125. select ARCH_USE_BUILTIN_BSWAP
  126. select OLD_SIGSUSPEND
  127. select OLD_SIGACTION if PPC32
  128. select HAVE_DEBUG_STACKOVERFLOW
  129. select HAVE_IRQ_EXIT_ON_IRQ_STACK
  130. select ARCH_USE_CMPXCHG_LOCKREF if PPC64
  131. select HAVE_ARCH_AUDITSYSCALL
  132. select ARCH_SUPPORTS_ATOMIC_RMW
  133. select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
  134. select NO_BOOTMEM
  135. select HAVE_GENERIC_RCU_GUP
  136. select HAVE_PERF_EVENTS_NMI if PPC64
  137. select EDAC_SUPPORT
  138. select EDAC_ATOMIC_SCRUB
  139. select ARCH_HAS_DMA_SET_COHERENT_MASK
  140. select HAVE_ARCH_SECCOMP_FILTER
  141. config GENERIC_CSUM
  142. def_bool CPU_LITTLE_ENDIAN
  143. config EARLY_PRINTK
  144. bool
  145. default y
  146. config PANIC_TIMEOUT
  147. int
  148. default 180
  149. config COMPAT
  150. bool
  151. default y if PPC64
  152. select COMPAT_BINFMT_ELF
  153. select ARCH_WANT_OLD_COMPAT_IPC
  154. select COMPAT_OLD_SIGACTION
  155. config SYSVIPC_COMPAT
  156. bool
  157. depends on COMPAT && SYSVIPC
  158. default y
  159. # All PPC32s use generic nvram driver through ppc_md
  160. config GENERIC_NVRAM
  161. bool
  162. default y if PPC32
  163. config SCHED_OMIT_FRAME_POINTER
  164. bool
  165. default y
  166. config ARCH_MAY_HAVE_PC_FDC
  167. bool
  168. default PCI
  169. config PPC_UDBG_16550
  170. bool
  171. default n
  172. config GENERIC_TBSYNC
  173. bool
  174. default y if PPC32 && SMP
  175. default n
  176. config AUDIT_ARCH
  177. bool
  178. default y
  179. config GENERIC_BUG
  180. bool
  181. default y
  182. depends on BUG
  183. config SYS_SUPPORTS_APM_EMULATION
  184. default y if PMAC_APM_EMU
  185. bool
  186. config EPAPR_BOOT
  187. bool
  188. help
  189. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  190. default n
  191. config DEFAULT_UIMAGE
  192. bool
  193. help
  194. Used to allow a board to specify it wants a uImage built by default
  195. default n
  196. config ARCH_HIBERNATION_POSSIBLE
  197. bool
  198. default y
  199. config ARCH_SUSPEND_POSSIBLE
  200. def_bool y
  201. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  202. (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
  203. || 44x || 40x
  204. config PPC_DCR_NATIVE
  205. bool
  206. default n
  207. config PPC_DCR_MMIO
  208. bool
  209. default n
  210. config PPC_DCR
  211. bool
  212. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  213. default y
  214. config PPC_OF_PLATFORM_PCI
  215. bool
  216. depends on PCI
  217. depends on PPC64 # not supported on 32 bits yet
  218. default n
  219. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  220. depends on PPC32 || PPC_STD_MMU_64
  221. def_bool y
  222. config ARCH_SUPPORTS_UPROBES
  223. def_bool y
  224. config PPC_ADV_DEBUG_REGS
  225. bool
  226. depends on 40x || BOOKE
  227. default y
  228. config PPC_ADV_DEBUG_IACS
  229. int
  230. depends on PPC_ADV_DEBUG_REGS
  231. default 4 if 44x
  232. default 2
  233. config PPC_ADV_DEBUG_DACS
  234. int
  235. depends on PPC_ADV_DEBUG_REGS
  236. default 2
  237. config PPC_ADV_DEBUG_DVCS
  238. int
  239. depends on PPC_ADV_DEBUG_REGS
  240. default 2 if 44x
  241. default 0
  242. config PPC_ADV_DEBUG_DAC_RANGE
  243. bool
  244. depends on PPC_ADV_DEBUG_REGS && 44x
  245. default y
  246. config PPC_EMULATE_SSTEP
  247. bool
  248. default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
  249. config ZONE_DMA32
  250. bool
  251. default y if PPC64
  252. config PGTABLE_LEVELS
  253. int
  254. default 2 if !PPC64
  255. default 3 if PPC_64K_PAGES
  256. default 4
  257. source "init/Kconfig"
  258. source "kernel/Kconfig.freezer"
  259. source "arch/powerpc/sysdev/Kconfig"
  260. source "arch/powerpc/platforms/Kconfig"
  261. menu "Kernel options"
  262. config HIGHMEM
  263. bool "High memory support"
  264. depends on PPC32
  265. source kernel/Kconfig.hz
  266. source kernel/Kconfig.preempt
  267. source "fs/Kconfig.binfmt"
  268. config HUGETLB_PAGE_SIZE_VARIABLE
  269. bool
  270. depends on HUGETLB_PAGE
  271. default y
  272. config MATH_EMULATION
  273. bool "Math emulation"
  274. depends on 4xx || 8xx || PPC_MPC832x || BOOKE
  275. ---help---
  276. Some PowerPC chips designed for embedded applications do not have
  277. a floating-point unit and therefore do not implement the
  278. floating-point instructions in the PowerPC instruction set. If you
  279. say Y here, the kernel will include code to emulate a floating-point
  280. unit, which will allow programs that use floating-point
  281. instructions to run.
  282. This is also useful to emulate missing (optional) instructions
  283. such as fsqrt on cores that do have an FPU but do not implement
  284. them (such as Freescale BookE).
  285. choice
  286. prompt "Math emulation options"
  287. default MATH_EMULATION_FULL
  288. depends on MATH_EMULATION
  289. config MATH_EMULATION_FULL
  290. bool "Emulate all the floating point instructions"
  291. ---help---
  292. Select this option will enable the kernel to support to emulate
  293. all the floating point instructions. If your SoC doesn't have
  294. a FPU, you should select this.
  295. config MATH_EMULATION_HW_UNIMPLEMENTED
  296. bool "Just emulate the FPU unimplemented instructions"
  297. ---help---
  298. Select this if you know there does have a hardware FPU on your
  299. SoC, but some floating point instructions are not implemented by that.
  300. endchoice
  301. config PPC_TRANSACTIONAL_MEM
  302. bool "Transactional Memory support for POWERPC"
  303. depends on PPC_BOOK3S_64
  304. depends on SMP
  305. select ALTIVEC
  306. select VSX
  307. default n
  308. ---help---
  309. Support user-mode Transactional Memory on POWERPC.
  310. config IOMMU_HELPER
  311. def_bool PPC64
  312. config SWIOTLB
  313. bool "SWIOTLB support"
  314. default n
  315. select IOMMU_HELPER
  316. ---help---
  317. Support for IO bounce buffering for systems without an IOMMU.
  318. This allows us to DMA to the full physical address space on
  319. platforms where the size of a physical address is larger
  320. than the bus address. Not all platforms support this.
  321. config HOTPLUG_CPU
  322. bool "Support for enabling/disabling CPUs"
  323. depends on SMP && (PPC_PSERIES || \
  324. PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
  325. ---help---
  326. Say Y here to be able to disable and re-enable individual
  327. CPUs at runtime on SMP machines.
  328. Say N if you are unsure.
  329. config ARCH_CPU_PROBE_RELEASE
  330. def_bool y
  331. depends on HOTPLUG_CPU
  332. config ARCH_ENABLE_MEMORY_HOTPLUG
  333. def_bool y
  334. config ARCH_HAS_WALK_MEMORY
  335. def_bool y
  336. config ARCH_ENABLE_MEMORY_HOTREMOVE
  337. def_bool y
  338. config PPC64_SUPPORTS_MEMORY_FAILURE
  339. bool "Add support for memory hwpoison"
  340. depends on PPC_BOOK3S_64
  341. default "y" if PPC_POWERNV
  342. select ARCH_SUPPORTS_MEMORY_FAILURE
  343. config KEXEC
  344. bool "kexec system call"
  345. depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
  346. select KEXEC_CORE
  347. help
  348. kexec is a system call that implements the ability to shutdown your
  349. current kernel, and to start another kernel. It is like a reboot
  350. but it is independent of the system firmware. And like a reboot
  351. you can start any kernel with it, not just Linux.
  352. The name comes from the similarity to the exec system call.
  353. It is an ongoing process to be certain the hardware in a machine
  354. is properly shutdown, so do not be surprised if this code does not
  355. initially work for you. As of this writing the exact hardware
  356. interface is strongly in flux, so no good recommendation can be
  357. made.
  358. config CRASH_DUMP
  359. bool "Build a kdump crash kernel"
  360. depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
  361. select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
  362. help
  363. Build a kernel suitable for use as a kdump capture kernel.
  364. The same kernel binary can be used as production kernel and dump
  365. capture kernel.
  366. config FA_DUMP
  367. bool "Firmware-assisted dump"
  368. depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
  369. help
  370. A robust mechanism to get reliable kernel crash dump with
  371. assistance from firmware. This approach does not use kexec,
  372. instead firmware assists in booting the kdump kernel
  373. while preserving memory contents. Firmware-assisted dump
  374. is meant to be a kdump replacement offering robustness and
  375. speed not possible without system firmware assistance.
  376. If unsure, say "N"
  377. config IRQ_ALL_CPUS
  378. bool "Distribute interrupts on all CPUs by default"
  379. depends on SMP
  380. help
  381. This option gives the kernel permission to distribute IRQs across
  382. multiple CPUs. Saying N here will route all IRQs to the first
  383. CPU. Generally saying Y is safe, although some problems have been
  384. reported with SMP Power Macintoshes with this option enabled.
  385. config NUMA
  386. bool "NUMA support"
  387. depends on PPC64
  388. default y if SMP && PPC_PSERIES
  389. config NODES_SHIFT
  390. int
  391. default "8" if PPC64
  392. default "4"
  393. depends on NEED_MULTIPLE_NODES
  394. config USE_PERCPU_NUMA_NODE_ID
  395. def_bool y
  396. depends on NUMA
  397. config HAVE_MEMORYLESS_NODES
  398. def_bool y
  399. depends on NUMA
  400. config ARCH_SELECT_MEMORY_MODEL
  401. def_bool y
  402. depends on PPC64
  403. config ARCH_FLATMEM_ENABLE
  404. def_bool y
  405. depends on (PPC64 && !NUMA) || PPC32
  406. config ARCH_SPARSEMEM_ENABLE
  407. def_bool y
  408. depends on PPC64
  409. select SPARSEMEM_VMEMMAP_ENABLE
  410. config ARCH_SPARSEMEM_DEFAULT
  411. def_bool y
  412. depends on (SMP && PPC_PSERIES) || PPC_PS3
  413. config SYS_SUPPORTS_HUGETLBFS
  414. bool
  415. source "mm/Kconfig"
  416. config ARCH_MEMORY_PROBE
  417. def_bool y
  418. depends on MEMORY_HOTPLUG
  419. # Some NUMA nodes have memory ranges that span
  420. # other nodes. Even though a pfn is valid and
  421. # between a node's start and end pfns, it may not
  422. # reside on that node. See memmap_init_zone()
  423. # for details.
  424. config NODES_SPAN_OTHER_NODES
  425. def_bool y
  426. depends on NEED_MULTIPLE_NODES
  427. config STDBINUTILS
  428. bool "Using standard binutils settings"
  429. depends on 44x
  430. default y
  431. help
  432. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  433. Note, that kernel will be able to run only those applications,
  434. which had been compiled using binutils later than 2.17.50.0.3 with
  435. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  436. the older binutils, you can patch them with a trivial patch, which
  437. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  438. choice
  439. prompt "Page size"
  440. default PPC_4K_PAGES
  441. help
  442. Select the kernel logical page size. Increasing the page size
  443. will reduce software overhead at each page boundary, allow
  444. hardware prefetch mechanisms to be more effective, and allow
  445. larger dma transfers increasing IO efficiency and reducing
  446. overhead. However the utilization of memory will increase.
  447. For example, each cached file will using a multiple of the
  448. page size to hold its contents and the difference between the
  449. end of file and the end of page is wasted.
  450. Some dedicated systems, such as software raid serving with
  451. accelerated calculations, have shown significant increases.
  452. If you configure a 64 bit kernel for 64k pages but the
  453. processor does not support them, then the kernel will simulate
  454. them with 4k pages, loading them on demand, but with the
  455. reduced software overhead and larger internal fragmentation.
  456. For the 32 bit kernel, a large page option will not be offered
  457. unless it is supported by the configured processor.
  458. If unsure, choose 4K_PAGES.
  459. config PPC_4K_PAGES
  460. bool "4k page size"
  461. select HAVE_ARCH_SOFT_DIRTY if CHECKPOINT_RESTORE && PPC_BOOK3S
  462. config PPC_16K_PAGES
  463. bool "16k page size"
  464. depends on 44x || PPC_8xx
  465. config PPC_64K_PAGES
  466. bool "64k page size"
  467. depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
  468. select HAVE_ARCH_SOFT_DIRTY if CHECKPOINT_RESTORE && PPC_BOOK3S
  469. config PPC_256K_PAGES
  470. bool "256k page size"
  471. depends on 44x && !STDBINUTILS
  472. help
  473. Make the page size 256k.
  474. As the ELF standard only requires alignment to support page
  475. sizes up to 64k, you will need to compile all of your user
  476. space applications with a non-standard binutils settings
  477. (see the STDBINUTILS description for details).
  478. Say N unless you know what you are doing.
  479. endchoice
  480. config FORCE_MAX_ZONEORDER
  481. int "Maximum zone order"
  482. range 9 64 if PPC64 && PPC_64K_PAGES
  483. default "9" if PPC64 && PPC_64K_PAGES
  484. range 13 64 if PPC64 && !PPC_64K_PAGES
  485. default "13" if PPC64 && !PPC_64K_PAGES
  486. range 9 64 if PPC32 && PPC_16K_PAGES
  487. default "9" if PPC32 && PPC_16K_PAGES
  488. range 7 64 if PPC32 && PPC_64K_PAGES
  489. default "7" if PPC32 && PPC_64K_PAGES
  490. range 5 64 if PPC32 && PPC_256K_PAGES
  491. default "5" if PPC32 && PPC_256K_PAGES
  492. range 11 64
  493. default "11"
  494. help
  495. The kernel memory allocator divides physically contiguous memory
  496. blocks into "zones", where each zone is a power of two number of
  497. pages. This option selects the largest power of two that the kernel
  498. keeps in the memory allocator. If you need to allocate very large
  499. blocks of physically contiguous memory, then you may need to
  500. increase this value.
  501. This config option is actually maximum order plus one. For example,
  502. a value of 11 means that the largest free memory block is 2^10 pages.
  503. The page size is not necessarily 4KB. For example, on 64-bit
  504. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  505. this in mind when choosing a value for this option.
  506. config PPC_SUBPAGE_PROT
  507. bool "Support setting protections for 4k subpages"
  508. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  509. help
  510. This option adds support for a system call to allow user programs
  511. to set access permissions (read/write, readonly, or no access)
  512. on the 4k subpages of each 64k page.
  513. config PPC_COPRO_BASE
  514. bool
  515. default n
  516. config SCHED_SMT
  517. bool "SMT (Hyperthreading) scheduler support"
  518. depends on PPC64 && SMP
  519. help
  520. SMT scheduler support improves the CPU scheduler's decision making
  521. when dealing with POWER5 cpus at a cost of slightly increased
  522. overhead in some places. If unsure say N here.
  523. config PPC_DENORMALISATION
  524. bool "PowerPC denormalisation exception handling"
  525. depends on PPC_BOOK3S_64
  526. default "y" if PPC_POWERNV
  527. ---help---
  528. Add support for handling denormalisation of single precision
  529. values. Useful for bare metal only. If unsure say Y here.
  530. config CMDLINE_BOOL
  531. bool "Default bootloader kernel arguments"
  532. config CMDLINE
  533. string "Initial kernel command string"
  534. depends on CMDLINE_BOOL
  535. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  536. help
  537. On some platforms, there is currently no way for the boot loader to
  538. pass arguments to the kernel. For these platforms, you can supply
  539. some command-line options at build time by entering them here. In
  540. most cases you will need to specify the root device here.
  541. config CMDLINE_FORCE
  542. bool "Always use the default kernel command string"
  543. depends on CMDLINE_BOOL
  544. help
  545. Always use the default kernel command string, even if the boot
  546. loader passes other arguments to the kernel.
  547. This is useful if you cannot or don't want to change the
  548. command-line options your boot loader passes to the kernel.
  549. config EXTRA_TARGETS
  550. string "Additional default image types"
  551. help
  552. List additional targets to be built by the bootwrapper here (separated
  553. by spaces). This is useful for targets that depend of device tree
  554. files in the .dts directory.
  555. Targets in this list will be build as part of the default build
  556. target, or when the user does a 'make zImage' or a
  557. 'make zImage.initrd'.
  558. If unsure, leave blank
  559. config ARCH_WANTS_FREEZER_CONTROL
  560. def_bool y
  561. depends on ADB_PMU
  562. source kernel/power/Kconfig
  563. config SECCOMP
  564. bool "Enable seccomp to safely compute untrusted bytecode"
  565. depends on PROC_FS
  566. default y
  567. help
  568. This kernel feature is useful for number crunching applications
  569. that may need to compute untrusted bytecode during their
  570. execution. By using pipes or other transports made available to
  571. the process as file descriptors supporting the read/write
  572. syscalls, it's possible to isolate those applications in
  573. their own address space using seccomp. Once seccomp is
  574. enabled via /proc/<pid>/seccomp, it cannot be disabled
  575. and the task is only allowed to execute a few safe syscalls
  576. defined by each seccomp mode.
  577. If unsure, say Y. Only embedded should say N here.
  578. endmenu
  579. config ISA_DMA_API
  580. bool
  581. default PCI
  582. menu "Bus options"
  583. config ISA
  584. bool "Support for ISA-bus hardware"
  585. depends on PPC_CHRP
  586. select PPC_I8259
  587. help
  588. Find out whether you have ISA slots on your motherboard. ISA is the
  589. name of a bus system, i.e. the way the CPU talks to the other stuff
  590. inside your box. If you have an Apple machine, say N here; if you
  591. have an IBM RS/6000 or pSeries machine, say Y. If you have an
  592. embedded board, consult your board documentation.
  593. config ZONE_DMA
  594. bool
  595. default y
  596. config NEED_DMA_MAP_STATE
  597. def_bool (PPC64 || NOT_COHERENT_CACHE)
  598. config NEED_SG_DMA_LENGTH
  599. def_bool y
  600. config GENERIC_ISA_DMA
  601. bool
  602. depends on ISA_DMA_API
  603. default y
  604. config PPC_INDIRECT_PCI
  605. bool
  606. depends on PCI
  607. default y if 40x || 44x
  608. default n
  609. config EISA
  610. bool
  611. config SBUS
  612. bool
  613. config FSL_SOC
  614. bool
  615. config FSL_PCI
  616. bool
  617. select PPC_INDIRECT_PCI
  618. select PCI_QUIRKS
  619. config FSL_PMC
  620. bool
  621. default y
  622. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  623. help
  624. Freescale MPC85xx/MPC86xx power management controller support
  625. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  626. config PPC4xx_CPM
  627. bool
  628. default y
  629. depends on SUSPEND && (44x || 40x)
  630. help
  631. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  632. It also enables support for two different idle states (idle-wait
  633. and idle-doze).
  634. config 4xx_SOC
  635. bool
  636. config FSL_LBC
  637. bool "Freescale Local Bus support"
  638. depends on FSL_SOC
  639. help
  640. Enables reporting of errors from the Freescale local bus
  641. controller. Also contains some common code used by
  642. drivers for specific local bus peripherals.
  643. config FSL_GTM
  644. bool
  645. depends on PPC_83xx || QUICC_ENGINE || CPM2
  646. help
  647. Freescale General-purpose Timers support
  648. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  649. config MCA
  650. bool
  651. # Platforms that what PCI turned unconditionally just do select PCI
  652. # in their config node. Platforms that want to choose at config
  653. # time should select PPC_PCI_CHOICE
  654. config PPC_PCI_CHOICE
  655. bool
  656. config PCI
  657. bool "PCI support" if PPC_PCI_CHOICE
  658. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  659. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  660. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  661. select GENERIC_PCI_IOMAP
  662. help
  663. Find out whether your system includes a PCI bus. PCI is the name of
  664. a bus system, i.e. the way the CPU talks to the other stuff inside
  665. your box. If you say Y here, the kernel will include drivers and
  666. infrastructure code to support PCI bus devices.
  667. config PCI_DOMAINS
  668. def_bool PCI
  669. config PCI_SYSCALL
  670. def_bool PCI
  671. config PCI_QSPAN
  672. bool "QSpan PCI"
  673. depends on !4xx && !CPM2 && 8xx
  674. select PPC_I8259
  675. help
  676. Say Y here if you have a system based on a Motorola 8xx-series
  677. embedded processor with a QSPAN PCI interface, otherwise say N.
  678. config PCI_8260
  679. bool
  680. depends on PCI && 8260
  681. select PPC_INDIRECT_PCI
  682. default y
  683. source "drivers/pci/pcie/Kconfig"
  684. source "drivers/pci/Kconfig"
  685. source "drivers/pcmcia/Kconfig"
  686. source "drivers/pci/hotplug/Kconfig"
  687. config HAS_RAPIDIO
  688. bool
  689. default n
  690. config RAPIDIO
  691. tristate "RapidIO support"
  692. depends on HAS_RAPIDIO || PCI
  693. help
  694. If you say Y here, the kernel will include drivers and
  695. infrastructure code to support RapidIO interconnect devices.
  696. config FSL_RIO
  697. bool "Freescale Embedded SRIO Controller support"
  698. depends on RAPIDIO = y && HAS_RAPIDIO
  699. default "n"
  700. ---help---
  701. Include support for RapidIO controller on Freescale embedded
  702. processors (MPC8548, MPC8641, etc).
  703. source "drivers/rapidio/Kconfig"
  704. endmenu
  705. config NONSTATIC_KERNEL
  706. bool
  707. default n
  708. menu "Advanced setup"
  709. depends on PPC32
  710. config ADVANCED_OPTIONS
  711. bool "Prompt for advanced kernel configuration options"
  712. help
  713. This option will enable prompting for a variety of advanced kernel
  714. configuration options. These options can cause the kernel to not
  715. work if they are set incorrectly, but can be used to optimize certain
  716. aspects of kernel memory management.
  717. Unless you know what you are doing, say N here.
  718. comment "Default settings for advanced configuration options are used"
  719. depends on !ADVANCED_OPTIONS
  720. config LOWMEM_SIZE_BOOL
  721. bool "Set maximum low memory"
  722. depends on ADVANCED_OPTIONS
  723. help
  724. This option allows you to set the maximum amount of memory which
  725. will be used as "low memory", that is, memory which the kernel can
  726. access directly, without having to set up a kernel virtual mapping.
  727. This can be useful in optimizing the layout of kernel virtual
  728. memory.
  729. Say N here unless you know what you are doing.
  730. config LOWMEM_SIZE
  731. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  732. default "0x30000000"
  733. config LOWMEM_CAM_NUM_BOOL
  734. bool "Set number of CAMs to use to map low memory"
  735. depends on ADVANCED_OPTIONS && FSL_BOOKE
  736. help
  737. This option allows you to set the maximum number of CAM slots that
  738. will be used to map low memory. There are a limited number of slots
  739. available and even more limited number that will fit in the L1 MMU.
  740. However, using more entries will allow mapping more low memory. This
  741. can be useful in optimizing the layout of kernel virtual memory.
  742. Say N here unless you know what you are doing.
  743. config LOWMEM_CAM_NUM
  744. depends on FSL_BOOKE
  745. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  746. default 3
  747. config DYNAMIC_MEMSTART
  748. bool "Enable page aligned dynamic load address for kernel"
  749. depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
  750. select NONSTATIC_KERNEL
  751. help
  752. This option enables the kernel to be loaded at any page aligned
  753. physical address. The kernel creates a mapping from KERNELBASE to
  754. the address where the kernel is loaded. The page size here implies
  755. the TLB page size of the mapping for kernel on the particular platform.
  756. Please refer to the init code for finding the TLB page size.
  757. DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
  758. kernel image, where the only restriction is the page aligned kernel
  759. load address. When this option is enabled, the compile time physical
  760. address CONFIG_PHYSICAL_START is ignored.
  761. This option is overridden by CONFIG_RELOCATABLE
  762. config RELOCATABLE
  763. bool "Build a relocatable kernel"
  764. depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
  765. select NONSTATIC_KERNEL
  766. help
  767. This builds a kernel image that is capable of running at the
  768. location the kernel is loaded at, without any alignment restrictions.
  769. This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
  770. One use is for the kexec on panic case where the recovery kernel
  771. must live at a different physical address than the primary
  772. kernel.
  773. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  774. it has been loaded at and the compile time physical addresses
  775. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  776. setting can still be useful to bootwrappers that need to know the
  777. load address of the kernel (eg. u-boot/mkimage).
  778. config RELOCATABLE_PPC32
  779. def_bool y
  780. depends on PPC32 && RELOCATABLE
  781. config PAGE_OFFSET_BOOL
  782. bool "Set custom page offset address"
  783. depends on ADVANCED_OPTIONS
  784. help
  785. This option allows you to set the kernel virtual address at which
  786. the kernel will map low memory. This can be useful in optimizing
  787. the virtual memory layout of the system.
  788. Say N here unless you know what you are doing.
  789. config PAGE_OFFSET
  790. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  791. default "0xc0000000"
  792. config KERNEL_START_BOOL
  793. bool "Set custom kernel base address"
  794. depends on ADVANCED_OPTIONS
  795. help
  796. This option allows you to set the kernel virtual address at which
  797. the kernel will be loaded. Normally this should match PAGE_OFFSET
  798. however there are times (like kdump) that one might not want them
  799. to be the same.
  800. Say N here unless you know what you are doing.
  801. config KERNEL_START
  802. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  803. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  804. default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
  805. default "0xc0000000"
  806. config PHYSICAL_START_BOOL
  807. bool "Set physical address where the kernel is loaded"
  808. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  809. help
  810. This gives the physical address where the kernel is loaded.
  811. Say N here unless you know what you are doing.
  812. config PHYSICAL_START
  813. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  814. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
  815. default "0x00000000"
  816. config PHYSICAL_ALIGN
  817. hex
  818. default "0x04000000" if FSL_BOOKE
  819. help
  820. This value puts the alignment restrictions on physical address
  821. where kernel is loaded and run from. Kernel is compiled for an
  822. address which meets above alignment restriction.
  823. config TASK_SIZE_BOOL
  824. bool "Set custom user task size"
  825. depends on ADVANCED_OPTIONS
  826. help
  827. This option allows you to set the amount of virtual address space
  828. allocated to user tasks. This can be useful in optimizing the
  829. virtual memory layout of the system.
  830. Say N here unless you know what you are doing.
  831. config TASK_SIZE
  832. hex "Size of user task space" if TASK_SIZE_BOOL
  833. default "0x80000000" if PPC_8xx
  834. default "0xc0000000"
  835. config CONSISTENT_SIZE_BOOL
  836. bool "Set custom consistent memory pool size"
  837. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  838. help
  839. This option allows you to set the size of the
  840. consistent memory pool. This pool of virtual memory
  841. is used to make consistent memory allocations.
  842. config CONSISTENT_SIZE
  843. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  844. default "0x00200000" if NOT_COHERENT_CACHE
  845. config PIN_TLB
  846. bool "Pinned Kernel TLBs (860 ONLY)"
  847. depends on ADVANCED_OPTIONS && 8xx
  848. endmenu
  849. if PPC64
  850. config RELOCATABLE
  851. bool "Build a relocatable kernel"
  852. depends on !COMPILE_TEST
  853. select NONSTATIC_KERNEL
  854. help
  855. This builds a kernel image that is capable of running anywhere
  856. in the RMA (real memory area) at any 16k-aligned base address.
  857. The kernel is linked as a position-independent executable (PIE)
  858. and contains dynamic relocations which are processed early
  859. in the bootup process.
  860. One use is for the kexec on panic case where the recovery kernel
  861. must live at a different physical address than the primary
  862. kernel.
  863. # This value must have zeroes in the bottom 60 bits otherwise lots will break
  864. config PAGE_OFFSET
  865. hex
  866. default "0xc000000000000000"
  867. config KERNEL_START
  868. hex
  869. default "0xc000000000000000"
  870. config PHYSICAL_START
  871. hex
  872. default "0x00000000"
  873. endif
  874. config ARCH_RANDOM
  875. def_bool n
  876. source "net/Kconfig"
  877. source "drivers/Kconfig"
  878. source "fs/Kconfig"
  879. source "lib/Kconfig"
  880. source "arch/powerpc/Kconfig.debug"
  881. source "security/Kconfig"
  882. config KEYS_COMPAT
  883. bool
  884. depends on COMPAT && KEYS
  885. default y
  886. source "crypto/Kconfig"
  887. config PPC_LIB_RHEAP
  888. bool
  889. source "arch/powerpc/kvm/Kconfig"