Kconfig 25 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000
  1. source "arch/powerpc/platforms/Kconfig.cputype"
  2. config PPC32
  3. bool
  4. default y if !PPC64
  5. config 32BIT
  6. bool
  7. default y if PPC32
  8. config 64BIT
  9. bool
  10. default y if PPC64
  11. config WORD_SIZE
  12. int
  13. default 64 if PPC64
  14. default 32 if !PPC64
  15. config ARCH_PHYS_ADDR_T_64BIT
  16. def_bool PPC64 || PHYS_64BIT
  17. config ARCH_DMA_ADDR_T_64BIT
  18. def_bool ARCH_PHYS_ADDR_T_64BIT
  19. config MMU
  20. bool
  21. default y
  22. config GENERIC_CMOS_UPDATE
  23. def_bool y
  24. config GENERIC_TIME_VSYSCALL
  25. def_bool y
  26. config GENERIC_CLOCKEVENTS
  27. def_bool y
  28. config HAVE_SETUP_PER_CPU_AREA
  29. def_bool PPC64
  30. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  31. def_bool PPC64
  32. config NR_IRQS
  33. int "Number of virtual interrupt numbers"
  34. range 32 32768
  35. default "512"
  36. help
  37. This defines the number of virtual interrupt numbers the kernel
  38. can manage. Virtual interrupt numbers are what you see in
  39. /proc/interrupts. If you configure your system to have too few,
  40. drivers will fail to load or worse - handle with care.
  41. config STACKTRACE_SUPPORT
  42. bool
  43. default y
  44. config HAVE_LATENCYTOP_SUPPORT
  45. def_bool y
  46. config TRACE_IRQFLAGS_SUPPORT
  47. bool
  48. default y
  49. config LOCKDEP_SUPPORT
  50. bool
  51. default y
  52. config RWSEM_GENERIC_SPINLOCK
  53. bool
  54. config RWSEM_XCHGADD_ALGORITHM
  55. bool
  56. default y
  57. config GENERIC_LOCKBREAK
  58. bool
  59. default y
  60. depends on SMP && PREEMPT
  61. config ARCH_HAS_ILOG2_U32
  62. bool
  63. default y
  64. config ARCH_HAS_ILOG2_U64
  65. bool
  66. default y if 64BIT
  67. config GENERIC_HWEIGHT
  68. bool
  69. default y
  70. config GENERIC_GPIO
  71. bool
  72. help
  73. Generic GPIO API support
  74. config ARCH_NO_VIRT_TO_BUS
  75. def_bool PPC64
  76. config PPC
  77. bool
  78. default y
  79. select OF
  80. select OF_EARLY_FLATTREE
  81. select HAVE_FTRACE_MCOUNT_RECORD
  82. select HAVE_DYNAMIC_FTRACE
  83. select HAVE_FUNCTION_TRACER
  84. select HAVE_FUNCTION_GRAPH_TRACER
  85. select ARCH_WANT_OPTIONAL_GPIOLIB
  86. select HAVE_IDE
  87. select HAVE_IOREMAP_PROT
  88. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  89. select HAVE_KPROBES
  90. select HAVE_ARCH_KGDB
  91. select HAVE_KRETPROBES
  92. select HAVE_ARCH_TRACEHOOK
  93. select HAVE_MEMBLOCK
  94. select HAVE_DMA_ATTRS
  95. select HAVE_DMA_API_DEBUG
  96. select USE_GENERIC_SMP_HELPERS if SMP
  97. select HAVE_OPROFILE
  98. select HAVE_SYSCALL_WRAPPERS if PPC64
  99. select GENERIC_ATOMIC64 if PPC32
  100. select HAVE_IRQ_WORK
  101. select HAVE_PERF_EVENTS
  102. select HAVE_REGS_AND_STACK_ACCESS_API
  103. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  104. select HAVE_GENERIC_HARDIRQS
  105. select HAVE_SPARSE_IRQ
  106. select IRQ_PER_CPU
  107. select GENERIC_IRQ_SHOW
  108. select GENERIC_IRQ_SHOW_LEVEL
  109. select HAVE_RCU_TABLE_FREE if SMP
  110. select HAVE_SYSCALL_TRACEPOINTS
  111. select HAVE_BPF_JIT if (PPC64 && NET)
  112. select HAVE_ARCH_JUMP_LABEL
  113. config EARLY_PRINTK
  114. bool
  115. default y
  116. config COMPAT
  117. bool
  118. default y if PPC64
  119. select COMPAT_BINFMT_ELF
  120. config SYSVIPC_COMPAT
  121. bool
  122. depends on COMPAT && SYSVIPC
  123. default y
  124. # All PPC32s use generic nvram driver through ppc_md
  125. config GENERIC_NVRAM
  126. bool
  127. default y if PPC32
  128. config SCHED_OMIT_FRAME_POINTER
  129. bool
  130. default y
  131. config ARCH_MAY_HAVE_PC_FDC
  132. bool
  133. default !PPC_PSERIES || PCI
  134. config PPC_OF
  135. def_bool y
  136. config PPC_UDBG_16550
  137. bool
  138. default n
  139. config GENERIC_TBSYNC
  140. bool
  141. default y if PPC32 && SMP
  142. default n
  143. config AUDIT_ARCH
  144. bool
  145. default y
  146. config GENERIC_BUG
  147. bool
  148. default y
  149. depends on BUG
  150. config SYS_SUPPORTS_APM_EMULATION
  151. default y if PMAC_APM_EMU
  152. bool
  153. config EPAPR_BOOT
  154. bool
  155. help
  156. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  157. default n
  158. config DEFAULT_UIMAGE
  159. bool
  160. help
  161. Used to allow a board to specify it wants a uImage built by default
  162. default n
  163. config REDBOOT
  164. bool
  165. config ARCH_HIBERNATION_POSSIBLE
  166. bool
  167. default y
  168. config ARCH_SUSPEND_POSSIBLE
  169. def_bool y
  170. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  171. (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
  172. config PPC_DCR_NATIVE
  173. bool
  174. default n
  175. config PPC_DCR_MMIO
  176. bool
  177. default n
  178. config PPC_DCR
  179. bool
  180. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  181. default y
  182. config PPC_OF_PLATFORM_PCI
  183. bool
  184. depends on PCI
  185. depends on PPC64 # not supported on 32 bits yet
  186. default n
  187. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  188. def_bool y
  189. config PPC_ADV_DEBUG_REGS
  190. bool
  191. depends on 40x || BOOKE
  192. default y
  193. config PPC_ADV_DEBUG_IACS
  194. int
  195. depends on PPC_ADV_DEBUG_REGS
  196. default 4 if 44x
  197. default 2
  198. config PPC_ADV_DEBUG_DACS
  199. int
  200. depends on PPC_ADV_DEBUG_REGS
  201. default 2
  202. config PPC_ADV_DEBUG_DVCS
  203. int
  204. depends on PPC_ADV_DEBUG_REGS
  205. default 2 if 44x
  206. default 0
  207. config PPC_ADV_DEBUG_DAC_RANGE
  208. bool
  209. depends on PPC_ADV_DEBUG_REGS && 44x
  210. default y
  211. source "init/Kconfig"
  212. source "kernel/Kconfig.freezer"
  213. source "arch/powerpc/sysdev/Kconfig"
  214. source "arch/powerpc/platforms/Kconfig"
  215. menu "Kernel options"
  216. config HIGHMEM
  217. bool "High memory support"
  218. depends on PPC32
  219. source kernel/time/Kconfig
  220. source kernel/Kconfig.hz
  221. source kernel/Kconfig.preempt
  222. source "fs/Kconfig.binfmt"
  223. config HUGETLB_PAGE_SIZE_VARIABLE
  224. bool
  225. depends on HUGETLB_PAGE
  226. default y
  227. config MATH_EMULATION
  228. bool "Math emulation"
  229. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  230. ---help---
  231. Some PowerPC chips designed for embedded applications do not have
  232. a floating-point unit and therefore do not implement the
  233. floating-point instructions in the PowerPC instruction set. If you
  234. say Y here, the kernel will include code to emulate a floating-point
  235. unit, which will allow programs that use floating-point
  236. instructions to run.
  237. config 8XX_MINIMAL_FPEMU
  238. bool "Minimal math emulation for 8xx"
  239. depends on 8xx && !MATH_EMULATION
  240. help
  241. Older arch/ppc kernels still emulated a few floating point
  242. instructions such as load and store, even when full math
  243. emulation is disabled. Say "Y" here if you want to preserve
  244. this behavior.
  245. It is recommended that you build a soft-float userspace instead.
  246. config IOMMU_HELPER
  247. def_bool PPC64
  248. config SWIOTLB
  249. bool "SWIOTLB support"
  250. default n
  251. select IOMMU_HELPER
  252. ---help---
  253. Support for IO bounce buffering for systems without an IOMMU.
  254. This allows us to DMA to the full physical address space on
  255. platforms where the size of a physical address is larger
  256. than the bus address. Not all platforms support this.
  257. config HOTPLUG_CPU
  258. bool "Support for enabling/disabling CPUs"
  259. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  260. ---help---
  261. Say Y here to be able to disable and re-enable individual
  262. CPUs at runtime on SMP machines.
  263. Say N if you are unsure.
  264. config ARCH_CPU_PROBE_RELEASE
  265. def_bool y
  266. depends on HOTPLUG_CPU
  267. config ARCH_ENABLE_MEMORY_HOTPLUG
  268. def_bool y
  269. config ARCH_HAS_WALK_MEMORY
  270. def_bool y
  271. config ARCH_ENABLE_MEMORY_HOTREMOVE
  272. def_bool y
  273. config KEXEC
  274. bool "kexec system call (EXPERIMENTAL)"
  275. depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL
  276. help
  277. kexec is a system call that implements the ability to shutdown your
  278. current kernel, and to start another kernel. It is like a reboot
  279. but it is independent of the system firmware. And like a reboot
  280. you can start any kernel with it, not just Linux.
  281. The name comes from the similarity to the exec system call.
  282. It is an ongoing process to be certain the hardware in a machine
  283. is properly shutdown, so do not be surprised if this code does not
  284. initially work for you. It may help to enable device hotplugging
  285. support. As of this writing the exact hardware interface is
  286. strongly in flux, so no good recommendation can be made.
  287. config CRASH_DUMP
  288. bool "Build a kdump crash kernel"
  289. depends on PPC64 || 6xx || FSL_BOOKE
  290. select RELOCATABLE if PPC64 || FSL_BOOKE
  291. help
  292. Build a kernel suitable for use as a kdump capture kernel.
  293. The same kernel binary can be used as production kernel and dump
  294. capture kernel.
  295. config PHYP_DUMP
  296. bool "Hypervisor-assisted dump (EXPERIMENTAL)"
  297. depends on PPC_PSERIES && EXPERIMENTAL
  298. help
  299. Hypervisor-assisted dump is meant to be a kdump replacement
  300. offering robustness and speed not possible without system
  301. hypervisor assistance.
  302. If unsure, say "N"
  303. config PPCBUG_NVRAM
  304. bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
  305. default y if PPC_PREP
  306. config IRQ_ALL_CPUS
  307. bool "Distribute interrupts on all CPUs by default"
  308. depends on SMP && !MV64360
  309. help
  310. This option gives the kernel permission to distribute IRQs across
  311. multiple CPUs. Saying N here will route all IRQs to the first
  312. CPU. Generally saying Y is safe, although some problems have been
  313. reported with SMP Power Macintoshes with this option enabled.
  314. config NUMA
  315. bool "NUMA support"
  316. depends on PPC64
  317. default y if SMP && PPC_PSERIES
  318. config NODES_SHIFT
  319. int
  320. default "8" if PPC64
  321. default "4"
  322. depends on NEED_MULTIPLE_NODES
  323. config MAX_ACTIVE_REGIONS
  324. int
  325. default "256" if PPC64
  326. default "32"
  327. config ARCH_SELECT_MEMORY_MODEL
  328. def_bool y
  329. depends on PPC64
  330. config ARCH_FLATMEM_ENABLE
  331. def_bool y
  332. depends on (PPC64 && !NUMA) || PPC32
  333. config ARCH_SPARSEMEM_ENABLE
  334. def_bool y
  335. depends on PPC64
  336. select SPARSEMEM_VMEMMAP_ENABLE
  337. config ARCH_SPARSEMEM_DEFAULT
  338. def_bool y
  339. depends on (SMP && PPC_PSERIES) || PPC_PS3
  340. config ARCH_POPULATES_NODE_MAP
  341. def_bool y
  342. config SYS_SUPPORTS_HUGETLBFS
  343. def_bool y
  344. depends on PPC_BOOK3S_64
  345. source "mm/Kconfig"
  346. config ARCH_MEMORY_PROBE
  347. def_bool y
  348. depends on MEMORY_HOTPLUG
  349. # Some NUMA nodes have memory ranges that span
  350. # other nodes. Even though a pfn is valid and
  351. # between a node's start and end pfns, it may not
  352. # reside on that node. See memmap_init_zone()
  353. # for details.
  354. config NODES_SPAN_OTHER_NODES
  355. def_bool y
  356. depends on NEED_MULTIPLE_NODES
  357. config PPC_HAS_HASH_64K
  358. bool
  359. depends on PPC64
  360. default n
  361. config STDBINUTILS
  362. bool "Using standard binutils settings"
  363. depends on 44x
  364. default y
  365. help
  366. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  367. Note, that kernel will be able to run only those applications,
  368. which had been compiled using binutils later than 2.17.50.0.3 with
  369. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  370. the older binutils, you can patch them with a trivial patch, which
  371. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  372. choice
  373. prompt "Page size"
  374. default PPC_4K_PAGES
  375. help
  376. Select the kernel logical page size. Increasing the page size
  377. will reduce software overhead at each page boundary, allow
  378. hardware prefetch mechanisms to be more effective, and allow
  379. larger dma transfers increasing IO efficiency and reducing
  380. overhead. However the utilization of memory will increase.
  381. For example, each cached file will using a multiple of the
  382. page size to hold its contents and the difference between the
  383. end of file and the end of page is wasted.
  384. Some dedicated systems, such as software raid serving with
  385. accelerated calculations, have shown significant increases.
  386. If you configure a 64 bit kernel for 64k pages but the
  387. processor does not support them, then the kernel will simulate
  388. them with 4k pages, loading them on demand, but with the
  389. reduced software overhead and larger internal fragmentation.
  390. For the 32 bit kernel, a large page option will not be offered
  391. unless it is supported by the configured processor.
  392. If unsure, choose 4K_PAGES.
  393. config PPC_4K_PAGES
  394. bool "4k page size"
  395. config PPC_16K_PAGES
  396. bool "16k page size" if 44x
  397. config PPC_64K_PAGES
  398. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  399. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  400. config PPC_256K_PAGES
  401. bool "256k page size" if 44x
  402. depends on !STDBINUTILS
  403. help
  404. Make the page size 256k.
  405. As the ELF standard only requires alignment to support page
  406. sizes up to 64k, you will need to compile all of your user
  407. space applications with a non-standard binutils settings
  408. (see the STDBINUTILS description for details).
  409. Say N unless you know what you are doing.
  410. endchoice
  411. config FORCE_MAX_ZONEORDER
  412. int "Maximum zone order"
  413. range 9 64 if PPC64 && PPC_64K_PAGES
  414. default "9" if PPC64 && PPC_64K_PAGES
  415. range 13 64 if PPC64 && !PPC_64K_PAGES
  416. default "13" if PPC64 && !PPC_64K_PAGES
  417. range 9 64 if PPC32 && PPC_16K_PAGES
  418. default "9" if PPC32 && PPC_16K_PAGES
  419. range 7 64 if PPC32 && PPC_64K_PAGES
  420. default "7" if PPC32 && PPC_64K_PAGES
  421. range 5 64 if PPC32 && PPC_256K_PAGES
  422. default "5" if PPC32 && PPC_256K_PAGES
  423. range 11 64
  424. default "11"
  425. help
  426. The kernel memory allocator divides physically contiguous memory
  427. blocks into "zones", where each zone is a power of two number of
  428. pages. This option selects the largest power of two that the kernel
  429. keeps in the memory allocator. If you need to allocate very large
  430. blocks of physically contiguous memory, then you may need to
  431. increase this value.
  432. This config option is actually maximum order plus one. For example,
  433. a value of 11 means that the largest free memory block is 2^10 pages.
  434. The page size is not necessarily 4KB. For example, on 64-bit
  435. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  436. this in mind when choosing a value for this option.
  437. config PPC_SUBPAGE_PROT
  438. bool "Support setting protections for 4k subpages"
  439. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  440. help
  441. This option adds support for a system call to allow user programs
  442. to set access permissions (read/write, readonly, or no access)
  443. on the 4k subpages of each 64k page.
  444. config SCHED_SMT
  445. bool "SMT (Hyperthreading) scheduler support"
  446. depends on PPC64 && SMP
  447. help
  448. SMT scheduler support improves the CPU scheduler's decision making
  449. when dealing with POWER5 cpus at a cost of slightly increased
  450. overhead in some places. If unsure say N here.
  451. config CMDLINE_BOOL
  452. bool "Default bootloader kernel arguments"
  453. config CMDLINE
  454. string "Initial kernel command string"
  455. depends on CMDLINE_BOOL
  456. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  457. help
  458. On some platforms, there is currently no way for the boot loader to
  459. pass arguments to the kernel. For these platforms, you can supply
  460. some command-line options at build time by entering them here. In
  461. most cases you will need to specify the root device here.
  462. config EXTRA_TARGETS
  463. string "Additional default image types"
  464. help
  465. List additional targets to be built by the bootwrapper here (separated
  466. by spaces). This is useful for targets that depend of device tree
  467. files in the .dts directory.
  468. Targets in this list will be build as part of the default build
  469. target, or when the user does a 'make zImage' or a
  470. 'make zImage.initrd'.
  471. If unsure, leave blank
  472. config ARCH_WANTS_FREEZER_CONTROL
  473. def_bool y
  474. depends on ADB_PMU
  475. source kernel/power/Kconfig
  476. config SECCOMP
  477. bool "Enable seccomp to safely compute untrusted bytecode"
  478. depends on PROC_FS
  479. default y
  480. help
  481. This kernel feature is useful for number crunching applications
  482. that may need to compute untrusted bytecode during their
  483. execution. By using pipes or other transports made available to
  484. the process as file descriptors supporting the read/write
  485. syscalls, it's possible to isolate those applications in
  486. their own address space using seccomp. Once seccomp is
  487. enabled via /proc/<pid>/seccomp, it cannot be disabled
  488. and the task is only allowed to execute a few safe syscalls
  489. defined by each seccomp mode.
  490. If unsure, say Y. Only embedded should say N here.
  491. endmenu
  492. config ISA_DMA_API
  493. bool
  494. default !PPC_ISERIES || PCI
  495. menu "Bus options"
  496. config ISA
  497. bool "Support for ISA-bus hardware"
  498. depends on PPC_PREP || PPC_CHRP
  499. select PPC_I8259
  500. help
  501. Find out whether you have ISA slots on your motherboard. ISA is the
  502. name of a bus system, i.e. the way the CPU talks to the other stuff
  503. inside your box. If you have an Apple machine, say N here; if you
  504. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  505. you have an embedded board, consult your board documentation.
  506. config ZONE_DMA
  507. bool
  508. default y
  509. config NEED_DMA_MAP_STATE
  510. def_bool (PPC64 || NOT_COHERENT_CACHE)
  511. config NEED_SG_DMA_LENGTH
  512. def_bool y
  513. config GENERIC_ISA_DMA
  514. bool
  515. depends on ISA_DMA_API
  516. default y
  517. config PPC_INDIRECT_PCI
  518. bool
  519. depends on PCI
  520. default y if 40x || 44x
  521. default n
  522. config EISA
  523. bool
  524. config SBUS
  525. bool
  526. config FSL_SOC
  527. bool
  528. config FSL_PCI
  529. bool
  530. select PPC_INDIRECT_PCI
  531. select PCI_QUIRKS
  532. config FSL_PMC
  533. bool
  534. default y
  535. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  536. help
  537. Freescale MPC85xx/MPC86xx power management controller support
  538. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  539. config PPC4xx_CPM
  540. bool
  541. default y
  542. depends on SUSPEND && (44x || 40x)
  543. help
  544. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  545. It also enables support for two different idle states (idle-wait
  546. and idle-doze).
  547. config 4xx_SOC
  548. bool
  549. config FSL_LBC
  550. bool "Freescale Local Bus support"
  551. depends on FSL_SOC
  552. help
  553. Enables reporting of errors from the Freescale local bus
  554. controller. Also contains some common code used by
  555. drivers for specific local bus peripherals.
  556. config FSL_GTM
  557. bool
  558. depends on PPC_83xx || QUICC_ENGINE || CPM2
  559. help
  560. Freescale General-purpose Timers support
  561. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  562. config MCA
  563. bool
  564. # Platforms that what PCI turned unconditionally just do select PCI
  565. # in their config node. Platforms that want to choose at config
  566. # time should select PPC_PCI_CHOICE
  567. config PPC_PCI_CHOICE
  568. bool
  569. config PCI
  570. bool "PCI support" if PPC_PCI_CHOICE
  571. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  572. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  573. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  574. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  575. select ARCH_SUPPORTS_MSI
  576. help
  577. Find out whether your system includes a PCI bus. PCI is the name of
  578. a bus system, i.e. the way the CPU talks to the other stuff inside
  579. your box. If you say Y here, the kernel will include drivers and
  580. infrastructure code to support PCI bus devices.
  581. config PCI_DOMAINS
  582. def_bool PCI
  583. config PCI_SYSCALL
  584. def_bool PCI
  585. config PCI_QSPAN
  586. bool "QSpan PCI"
  587. depends on !4xx && !CPM2 && 8xx
  588. select PPC_I8259
  589. help
  590. Say Y here if you have a system based on a Motorola 8xx-series
  591. embedded processor with a QSPAN PCI interface, otherwise say N.
  592. config PCI_8260
  593. bool
  594. depends on PCI && 8260
  595. select PPC_INDIRECT_PCI
  596. default y
  597. config 8260_PCI9
  598. bool "Enable workaround for MPC826x erratum PCI 9"
  599. depends on PCI_8260 && !8272
  600. default y
  601. choice
  602. prompt "IDMA channel for PCI 9 workaround"
  603. depends on 8260_PCI9
  604. config 8260_PCI9_IDMA1
  605. bool "IDMA1"
  606. config 8260_PCI9_IDMA2
  607. bool "IDMA2"
  608. config 8260_PCI9_IDMA3
  609. bool "IDMA3"
  610. config 8260_PCI9_IDMA4
  611. bool "IDMA4"
  612. endchoice
  613. source "drivers/pci/pcie/Kconfig"
  614. source "drivers/pci/Kconfig"
  615. source "drivers/pcmcia/Kconfig"
  616. source "drivers/pci/hotplug/Kconfig"
  617. config HAS_RAPIDIO
  618. bool
  619. default n
  620. config RAPIDIO
  621. bool "RapidIO support"
  622. depends on HAS_RAPIDIO || PCI
  623. help
  624. If you say Y here, the kernel will include drivers and
  625. infrastructure code to support RapidIO interconnect devices.
  626. config FSL_RIO
  627. bool "Freescale Embedded SRIO Controller support"
  628. depends on RAPIDIO && HAS_RAPIDIO
  629. default "n"
  630. ---help---
  631. Include support for RapidIO controller on Freescale embedded
  632. processors (MPC8548, MPC8641, etc).
  633. source "drivers/rapidio/Kconfig"
  634. endmenu
  635. menu "Advanced setup"
  636. depends on PPC32
  637. config ADVANCED_OPTIONS
  638. bool "Prompt for advanced kernel configuration options"
  639. help
  640. This option will enable prompting for a variety of advanced kernel
  641. configuration options. These options can cause the kernel to not
  642. work if they are set incorrectly, but can be used to optimize certain
  643. aspects of kernel memory management.
  644. Unless you know what you are doing, say N here.
  645. comment "Default settings for advanced configuration options are used"
  646. depends on !ADVANCED_OPTIONS
  647. config LOWMEM_SIZE_BOOL
  648. bool "Set maximum low memory"
  649. depends on ADVANCED_OPTIONS
  650. help
  651. This option allows you to set the maximum amount of memory which
  652. will be used as "low memory", that is, memory which the kernel can
  653. access directly, without having to set up a kernel virtual mapping.
  654. This can be useful in optimizing the layout of kernel virtual
  655. memory.
  656. Say N here unless you know what you are doing.
  657. config LOWMEM_SIZE
  658. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  659. default "0x30000000"
  660. config LOWMEM_CAM_NUM_BOOL
  661. bool "Set number of CAMs to use to map low memory"
  662. depends on ADVANCED_OPTIONS && FSL_BOOKE
  663. help
  664. This option allows you to set the maximum number of CAM slots that
  665. will be used to map low memory. There are a limited number of slots
  666. available and even more limited number that will fit in the L1 MMU.
  667. However, using more entries will allow mapping more low memory. This
  668. can be useful in optimizing the layout of kernel virtual memory.
  669. Say N here unless you know what you are doing.
  670. config LOWMEM_CAM_NUM
  671. depends on FSL_BOOKE
  672. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  673. default 3
  674. config RELOCATABLE
  675. bool "Build a relocatable kernel (EXPERIMENTAL)"
  676. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || PPC_47x)
  677. help
  678. This builds a kernel image that is capable of running at the
  679. location the kernel is loaded at (some alignment restrictions may
  680. exist).
  681. One use is for the kexec on panic case where the recovery kernel
  682. must live at a different physical address than the primary
  683. kernel.
  684. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  685. it has been loaded at and the compile time physical addresses
  686. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  687. setting can still be useful to bootwrappers that need to know the
  688. load location of the kernel (eg. u-boot/mkimage).
  689. config PAGE_OFFSET_BOOL
  690. bool "Set custom page offset address"
  691. depends on ADVANCED_OPTIONS
  692. help
  693. This option allows you to set the kernel virtual address at which
  694. the kernel will map low memory. This can be useful in optimizing
  695. the virtual memory layout of the system.
  696. Say N here unless you know what you are doing.
  697. config PAGE_OFFSET
  698. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  699. default "0xc0000000"
  700. config KERNEL_START_BOOL
  701. bool "Set custom kernel base address"
  702. depends on ADVANCED_OPTIONS
  703. help
  704. This option allows you to set the kernel virtual address at which
  705. the kernel will be loaded. Normally this should match PAGE_OFFSET
  706. however there are times (like kdump) that one might not want them
  707. to be the same.
  708. Say N here unless you know what you are doing.
  709. config KERNEL_START
  710. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  711. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  712. default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
  713. default "0xc0000000"
  714. config PHYSICAL_START_BOOL
  715. bool "Set physical address where the kernel is loaded"
  716. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  717. help
  718. This gives the physical address where the kernel is loaded.
  719. Say N here unless you know what you are doing.
  720. config PHYSICAL_START
  721. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  722. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
  723. default "0x00000000"
  724. config PHYSICAL_ALIGN
  725. hex
  726. default "0x04000000" if FSL_BOOKE
  727. help
  728. This value puts the alignment restrictions on physical address
  729. where kernel is loaded and run from. Kernel is compiled for an
  730. address which meets above alignment restriction.
  731. config TASK_SIZE_BOOL
  732. bool "Set custom user task size"
  733. depends on ADVANCED_OPTIONS
  734. help
  735. This option allows you to set the amount of virtual address space
  736. allocated to user tasks. This can be useful in optimizing the
  737. virtual memory layout of the system.
  738. Say N here unless you know what you are doing.
  739. config TASK_SIZE
  740. hex "Size of user task space" if TASK_SIZE_BOOL
  741. default "0x80000000" if PPC_PREP || PPC_8xx
  742. default "0xc0000000"
  743. config CONSISTENT_SIZE_BOOL
  744. bool "Set custom consistent memory pool size"
  745. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  746. help
  747. This option allows you to set the size of the
  748. consistent memory pool. This pool of virtual memory
  749. is used to make consistent memory allocations.
  750. config CONSISTENT_SIZE
  751. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  752. default "0x00200000" if NOT_COHERENT_CACHE
  753. config PIN_TLB
  754. bool "Pinned Kernel TLBs (860 ONLY)"
  755. depends on ADVANCED_OPTIONS && 8xx
  756. endmenu
  757. if PPC64
  758. config RELOCATABLE
  759. bool "Build a relocatable kernel"
  760. help
  761. This builds a kernel image that is capable of running anywhere
  762. in the RMA (real memory area) at any 16k-aligned base address.
  763. The kernel is linked as a position-independent executable (PIE)
  764. and contains dynamic relocations which are processed early
  765. in the bootup process.
  766. One use is for the kexec on panic case where the recovery kernel
  767. must live at a different physical address than the primary
  768. kernel.
  769. config PAGE_OFFSET
  770. hex
  771. default "0xc000000000000000"
  772. config KERNEL_START
  773. hex
  774. default "0xc000000000000000"
  775. config PHYSICAL_START
  776. hex
  777. default "0x00000000"
  778. endif
  779. source "net/Kconfig"
  780. source "drivers/Kconfig"
  781. source "fs/Kconfig"
  782. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  783. source "lib/Kconfig"
  784. source "arch/powerpc/Kconfig.debug"
  785. source "security/Kconfig"
  786. config KEYS_COMPAT
  787. bool
  788. depends on COMPAT && KEYS
  789. default y
  790. source "crypto/Kconfig"
  791. config PPC_CLOCK
  792. bool
  793. default n
  794. select HAVE_CLK
  795. config PPC_LIB_RHEAP
  796. bool
  797. source "arch/powerpc/kvm/Kconfig"