114cf11afSPaul Mackerras# For a description of the syntax of this configuration file, 214cf11afSPaul Mackerras# see Documentation/kbuild/kconfig-language.txt. 314cf11afSPaul Mackerras# 414cf11afSPaul Mackerras 514cf11afSPaul Mackerrasmainmenu "Linux/PowerPC Kernel Configuration" 614cf11afSPaul Mackerras 7a0ae9c7cSArnd Bergmannsource "arch/powerpc/platforms/Kconfig.cputype" 817e638bcSJohannes Berg 914cf11afSPaul Mackerrasconfig PPC32 1014cf11afSPaul Mackerras bool 1114cf11afSPaul Mackerras default y if !PPC64 1214cf11afSPaul Mackerras 1314cf11afSPaul Mackerrasconfig 64BIT 1414cf11afSPaul Mackerras bool 1514cf11afSPaul Mackerras default y if PPC64 1614cf11afSPaul Mackerras 172578bfaeSStephen Rothwellconfig WORD_SIZE 182578bfaeSStephen Rothwell int 192578bfaeSStephen Rothwell default 64 if PPC64 202578bfaeSStephen Rothwell default 32 if !PPC64 212578bfaeSStephen Rothwell 22600715dcSJeremy Fitzhardingeconfig ARCH_PHYS_ADDR_T_64BIT 23600715dcSJeremy Fitzhardinge def_bool PPC64 || PHYS_64BIT 24600715dcSJeremy Fitzhardinge 2514cf11afSPaul Mackerrasconfig MMU 2614cf11afSPaul Mackerras bool 2714cf11afSPaul Mackerras default y 2814cf11afSPaul Mackerras 29aa3be5f3STony Breedsconfig GENERIC_CMOS_UPDATE 30aa3be5f3STony Breeds def_bool y 31aa3be5f3STony Breeds 324a4cfe38STony Breedsconfig GENERIC_TIME 334a4cfe38STony Breeds def_bool y 344a4cfe38STony Breeds 354a4cfe38STony Breedsconfig GENERIC_TIME_VSYSCALL 364a4cfe38STony Breeds def_bool y 374a4cfe38STony Breeds 38d831d0b8STony Breedsconfig GENERIC_CLOCKEVENTS 39d831d0b8STony Breeds def_bool y 40d831d0b8STony Breeds 4114cf11afSPaul Mackerrasconfig GENERIC_HARDIRQS 4214cf11afSPaul Mackerras bool 4314cf11afSPaul Mackerras default y 4414cf11afSPaul Mackerras 45988c388aStravis@sgi.comconfig HAVE_SETUP_PER_CPU_AREA 46b32ef636Stravis@sgi.com def_bool PPC64 47b32ef636Stravis@sgi.com 480d7012a9SIngo Molnarconfig IRQ_PER_CPU 490d7012a9SIngo Molnar bool 500d7012a9SIngo Molnar default y 510d7012a9SIngo Molnar 52fd3e0bbcSChristoph Hellwigconfig STACKTRACE_SUPPORT 53fd3e0bbcSChristoph Hellwig bool 54fd3e0bbcSChristoph Hellwig default y 55fd3e0bbcSChristoph Hellwig 5601f4b8b8SArnd Bergmannconfig HAVE_LATENCYTOP_SUPPORT 5701f4b8b8SArnd Bergmann def_bool y 5801f4b8b8SArnd Bergmann 59945feb17SBenjamin Herrenschmidtconfig TRACE_IRQFLAGS_SUPPORT 60945feb17SBenjamin Herrenschmidt bool 61945feb17SBenjamin Herrenschmidt depends on PPC64 62945feb17SBenjamin Herrenschmidt default y 63945feb17SBenjamin Herrenschmidt 64945feb17SBenjamin Herrenschmidtconfig LOCKDEP_SUPPORT 65945feb17SBenjamin Herrenschmidt bool 66945feb17SBenjamin Herrenschmidt default y 67945feb17SBenjamin Herrenschmidt 6814cf11afSPaul Mackerrasconfig RWSEM_GENERIC_SPINLOCK 6914cf11afSPaul Mackerras bool 7014cf11afSPaul Mackerras 7114cf11afSPaul Mackerrasconfig RWSEM_XCHGADD_ALGORITHM 7214cf11afSPaul Mackerras bool 7314cf11afSPaul Mackerras default y 7414cf11afSPaul Mackerras 7595c354feSNick Pigginconfig GENERIC_LOCKBREAK 7695c354feSNick Piggin bool 7795c354feSNick Piggin default y 7895c354feSNick Piggin depends on SMP && PREEMPT 7995c354feSNick Piggin 80f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32 81f0d1b0b3SDavid Howells bool 82ef55d53cSDavid Howells default y 83f0d1b0b3SDavid Howells 84f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64 85f0d1b0b3SDavid Howells bool 86ef55d53cSDavid Howells default y if 64BIT 87f0d1b0b3SDavid Howells 88e779b2f9SAkinobu Mitaconfig GENERIC_HWEIGHT 89e779b2f9SAkinobu Mita bool 90e779b2f9SAkinobu Mita default y 91e779b2f9SAkinobu Mita 9214cf11afSPaul Mackerrasconfig GENERIC_CALIBRATE_DELAY 9314cf11afSPaul Mackerras bool 9414cf11afSPaul Mackerras default y 9514cf11afSPaul Mackerras 960a9cb46aSJon Masonconfig GENERIC_FIND_NEXT_BIT 970a9cb46aSJon Mason bool 980a9cb46aSJon Mason default y 990a9cb46aSJon Mason 100b7ce3415SAnton Vorontsovconfig GENERIC_GPIO 101b7ce3415SAnton Vorontsov bool 102b7ce3415SAnton Vorontsov help 103b7ce3415SAnton Vorontsov Generic GPIO API support 104b7ce3415SAnton Vorontsov 105f057eac0SStephen Rothwellconfig ARCH_NO_VIRT_TO_BUS 106f057eac0SStephen Rothwell def_bool PPC64 107f057eac0SStephen Rothwell 10814cf11afSPaul Mackerrasconfig PPC 10914cf11afSPaul Mackerras bool 11014cf11afSPaul Mackerras default y 111606576ceSSteven Rostedt select HAVE_FUNCTION_TRACER 1127444a72eSMichael Buesch select ARCH_WANT_OPTIONAL_GPIOLIB 113ec7748b5SSam Ravnborg select HAVE_IDE 114a1f242ffSBenjamin Herrenschmidt select HAVE_IOREMAP_PROT 11558340a07SJohannes Berg select HAVE_EFFICIENT_UNALIGNED_ACCESS 1163f550096SMathieu Desnoyers select HAVE_KPROBES 11717ce452fSJason Wessel select HAVE_ARCH_KGDB 1189edddaa2SAnanth N Mavinakayanahalli select HAVE_KRETPROBES 119dec2b0d0SRoland McGrath select HAVE_ARCH_TRACEHOOK 120d9b2b2a2SDavid S. Miller select HAVE_LMB 1217ff86b03STakashi Iwai select HAVE_DMA_ATTRS if PPC64 122b7d7a240SJens Axboe select USE_GENERIC_SMP_HELPERS if SMP 1234e491d14SSteven Rostedt select HAVE_OPROFILE 12414cf11afSPaul Mackerras 12514cf11afSPaul Mackerrasconfig EARLY_PRINTK 12614cf11afSPaul Mackerras bool 12751d3082fSBenjamin Herrenschmidt default y 12814cf11afSPaul Mackerras 12914cf11afSPaul Mackerrasconfig COMPAT 13014cf11afSPaul Mackerras bool 13114cf11afSPaul Mackerras default y if PPC64 13201e31dbaSRoland McGrath select COMPAT_BINFMT_ELF 13314cf11afSPaul Mackerras 13414cf11afSPaul Mackerrasconfig SYSVIPC_COMPAT 13514cf11afSPaul Mackerras bool 13614cf11afSPaul Mackerras depends on COMPAT && SYSVIPC 13714cf11afSPaul Mackerras default y 13814cf11afSPaul Mackerras 13914cf11afSPaul Mackerras# All PPC32s use generic nvram driver through ppc_md 14014cf11afSPaul Mackerrasconfig GENERIC_NVRAM 14114cf11afSPaul Mackerras bool 14214cf11afSPaul Mackerras default y if PPC32 14314cf11afSPaul Mackerras 14414cf11afSPaul Mackerrasconfig SCHED_NO_NO_OMIT_FRAME_POINTER 14514cf11afSPaul Mackerras bool 14614cf11afSPaul Mackerras default y 14714cf11afSPaul Mackerras 14814cf11afSPaul Mackerrasconfig ARCH_MAY_HAVE_PC_FDC 14914cf11afSPaul Mackerras bool 150bed59275SStephen Rothwell default !PPC_PSERIES || PCI 15114cf11afSPaul Mackerras 15208264cbcSKumar Galaconfig PPC_OF 15308264cbcSKumar Gala def_bool y 15408264cbcSKumar Gala 15597e873e5SStephen Rothwellconfig OF 15697e873e5SStephen Rothwell def_bool y 15797e873e5SStephen Rothwell 15808264cbcSKumar Galaconfig PPC_UDBG_16550 15908264cbcSKumar Gala bool 16008264cbcSKumar Gala default n 16108264cbcSKumar Gala 16208264cbcSKumar Galaconfig GENERIC_TBSYNC 16308264cbcSKumar Gala bool 16408264cbcSKumar Gala default y if PPC32 && SMP 16508264cbcSKumar Gala default n 16608264cbcSKumar Gala 167e65e1fc2SAl Viroconfig AUDIT_ARCH 168e65e1fc2SAl Viro bool 169e65e1fc2SAl Viro default y 170e65e1fc2SAl Viro 17173c9ceabSJeremy Fitzhardingeconfig GENERIC_BUG 17273c9ceabSJeremy Fitzhardinge bool 17373c9ceabSJeremy Fitzhardinge default y 17473c9ceabSJeremy Fitzhardinge depends on BUG 17573c9ceabSJeremy Fitzhardinge 176b3028878SJohannes Bergconfig SYS_SUPPORTS_APM_EMULATION 17758da10bbSKumar Gala default y if PMAC_APM_EMU 178b3028878SJohannes Berg bool 179b3028878SJohannes Berg 180f4fc4a5bSKumar Galaconfig DEFAULT_UIMAGE 181f4fc4a5bSKumar Gala bool 182f4fc4a5bSKumar Gala help 183f4fc4a5bSKumar Gala Used to allow a board to specify it wants a uImage built by default 184f4fc4a5bSKumar Gala default n 185f4fc4a5bSKumar Gala 186b09c1644SScott Woodconfig REDBOOT 187b09c1644SScott Wood bool 188b09c1644SScott Wood 189801e4062SJohannes Bergconfig HIBERNATE_32 190543b9fd3SJohannes Berg bool 191801e4062SJohannes Berg depends on (PPC_PMAC && !SMP) || BROKEN 192801e4062SJohannes Berg default y 193801e4062SJohannes Berg 194801e4062SJohannes Bergconfig HIBERNATE_64 195801e4062SJohannes Berg bool 196801e4062SJohannes Berg depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL) 197801e4062SJohannes Berg default y 198801e4062SJohannes Berg 199801e4062SJohannes Bergconfig ARCH_HIBERNATION_POSSIBLE 200801e4062SJohannes Berg bool 201801e4062SJohannes Berg depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32) 202543b9fd3SJohannes Berg default y 203543b9fd3SJohannes Berg 204f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 205f4cb5700SJohannes Berg def_bool y 206d49747bdSScott Wood depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx 207f4cb5700SJohannes Berg 2084c75a6f4SBenjamin Herrenschmidtconfig PPC_DCR_NATIVE 2094c75a6f4SBenjamin Herrenschmidt bool 2104c75a6f4SBenjamin Herrenschmidt default n 2114c75a6f4SBenjamin Herrenschmidt 2124c75a6f4SBenjamin Herrenschmidtconfig PPC_DCR_MMIO 2134c75a6f4SBenjamin Herrenschmidt bool 2144c75a6f4SBenjamin Herrenschmidt default n 2154c75a6f4SBenjamin Herrenschmidt 2164c75a6f4SBenjamin Herrenschmidtconfig PPC_DCR 2174c75a6f4SBenjamin Herrenschmidt bool 2184c75a6f4SBenjamin Herrenschmidt depends on PPC_DCR_NATIVE || PPC_DCR_MMIO 2194c75a6f4SBenjamin Herrenschmidt default y 2204c75a6f4SBenjamin Herrenschmidt 2214c9d2800SBenjamin Herrenschmidtconfig PPC_OF_PLATFORM_PCI 2224c9d2800SBenjamin Herrenschmidt bool 223373a6da1SStephen Rothwell depends on PCI 2244c9d2800SBenjamin Herrenschmidt depends on PPC64 # not supported on 32 bits yet 2254c9d2800SBenjamin Herrenschmidt default n 2264c9d2800SBenjamin Herrenschmidt 22714cf11afSPaul Mackerrassource "init/Kconfig" 22814cf11afSPaul Mackerras 229dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer" 230dc52ddc0SMatt Helsley 231a2d2e1ecSBenjamin Herrenschmidtsource "arch/powerpc/sysdev/Kconfig" 2324330f5daSKumar Galasource "arch/powerpc/platforms/Kconfig" 23314cf11afSPaul Mackerras 23414cf11afSPaul Mackerrasmenu "Kernel options" 23514cf11afSPaul Mackerras 23614cf11afSPaul Mackerrasconfig HIGHMEM 23714cf11afSPaul Mackerras bool "High memory support" 23814cf11afSPaul Mackerras depends on PPC32 23914cf11afSPaul Mackerras 2401ad74998STony Breedssource kernel/time/Kconfig 24114cf11afSPaul Mackerrassource kernel/Kconfig.hz 24214cf11afSPaul Mackerrassource kernel/Kconfig.preempt 24314cf11afSPaul Mackerrassource "fs/Kconfig.binfmt" 24414cf11afSPaul Mackerras 245ba72cb8cSMel Gormanconfig HUGETLB_PAGE_SIZE_VARIABLE 246ba72cb8cSMel Gorman bool 247ba72cb8cSMel Gorman depends on HUGETLB_PAGE 248ba72cb8cSMel Gorman default y 249ba72cb8cSMel Gorman 25014cf11afSPaul Mackerrasconfig MATH_EMULATION 25114cf11afSPaul Mackerras bool "Math emulation" 2524d52719aSKumar Gala depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 25314cf11afSPaul Mackerras ---help--- 25414cf11afSPaul Mackerras Some PowerPC chips designed for embedded applications do not have 25514cf11afSPaul Mackerras a floating-point unit and therefore do not implement the 25614cf11afSPaul Mackerras floating-point instructions in the PowerPC instruction set. If you 25714cf11afSPaul Mackerras say Y here, the kernel will include code to emulate a floating-point 25814cf11afSPaul Mackerras unit, which will allow programs that use floating-point 25914cf11afSPaul Mackerras instructions to run. 26014cf11afSPaul Mackerras 2615dd57a13SScott Woodconfig 8XX_MINIMAL_FPEMU 2625dd57a13SScott Wood bool "Minimal math emulation for 8xx" 2635dd57a13SScott Wood depends on 8xx && !MATH_EMULATION 2645dd57a13SScott Wood help 2655dd57a13SScott Wood Older arch/ppc kernels still emulated a few floating point 2665dd57a13SScott Wood instructions such as load and store, even when full math 2675dd57a13SScott Wood emulation is disabled. Say "Y" here if you want to preserve 2685dd57a13SScott Wood this behavior. 2695dd57a13SScott Wood 2705dd57a13SScott Wood It is recommended that you build a soft-float userspace instead. 2715dd57a13SScott Wood 27214cf11afSPaul Mackerrasconfig IOMMU_VMERGE 273768cc2d3SLinas Vepstas bool "Enable IOMMU virtual merging" 274768cc2d3SLinas Vepstas depends on PPC64 275768cc2d3SLinas Vepstas default y 27614cf11afSPaul Mackerras help 27714cf11afSPaul Mackerras Cause IO segments sent to a device for DMA to be merged virtually 27814cf11afSPaul Mackerras by the IOMMU when they happen to have been allocated contiguously. 27914cf11afSPaul Mackerras This doesn't add pressure to the IOMMU allocator. However, some 28014cf11afSPaul Mackerras drivers don't support getting large merged segments coming back 281768cc2d3SLinas Vepstas from *_map_sg(). 282768cc2d3SLinas Vepstas 283768cc2d3SLinas Vepstas Most drivers don't have this problem; it is safe to say Y here. 28414cf11afSPaul Mackerras 285fb3475e9SFUJITA Tomonoriconfig IOMMU_HELPER 286fb3475e9SFUJITA Tomonori def_bool PPC64 287fb3475e9SFUJITA Tomonori 28815e09c0eSBecky Bruceconfig PPC_NEED_DMA_SYNC_OPS 28915e09c0eSBecky Bruce def_bool y 29015e09c0eSBecky Bruce depends on NOT_COHERENT_CACHE 29115e09c0eSBecky Bruce 29214cf11afSPaul Mackerrasconfig HOTPLUG_CPU 29314cf11afSPaul Mackerras bool "Support for enabling/disabling CPUs" 29414cf11afSPaul Mackerras depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) 29514cf11afSPaul Mackerras ---help--- 29614cf11afSPaul Mackerras Say Y here to be able to disable and re-enable individual 29714cf11afSPaul Mackerras CPUs at runtime on SMP machines. 29814cf11afSPaul Mackerras 29914cf11afSPaul Mackerras Say N if you are unsure. 30014cf11afSPaul Mackerras 301cc57637bSYasunori Gotoconfig ARCH_ENABLE_MEMORY_HOTPLUG 302cc57637bSYasunori Goto def_bool y 303cc57637bSYasunori Goto 304a99824f3SBadari Pulavartyconfig ARCH_HAS_WALK_MEMORY 305a99824f3SBadari Pulavarty def_bool y 306a99824f3SBadari Pulavarty 3071482471dSBadari Pulavartyconfig ARCH_ENABLE_MEMORY_HOTREMOVE 3081482471dSBadari Pulavarty def_bool y 3091482471dSBadari Pulavarty 31014cf11afSPaul Mackerrasconfig KEXEC 31114cf11afSPaul Mackerras bool "kexec system call (EXPERIMENTAL)" 312fd4ba7e2SDale Farnsworth depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL 31314cf11afSPaul Mackerras help 31414cf11afSPaul Mackerras kexec is a system call that implements the ability to shutdown your 31514cf11afSPaul Mackerras current kernel, and to start another kernel. It is like a reboot 3161f1332f7SMatt LaPlante but it is independent of the system firmware. And like a reboot 31714cf11afSPaul Mackerras you can start any kernel with it, not just Linux. 31814cf11afSPaul Mackerras 3191f1332f7SMatt LaPlante The name comes from the similarity to the exec system call. 32014cf11afSPaul Mackerras 32114cf11afSPaul Mackerras It is an ongoing process to be certain the hardware in a machine 32214cf11afSPaul Mackerras is properly shutdown, so do not be surprised if this code does not 32314cf11afSPaul Mackerras initially work for you. It may help to enable device hotplugging 32414cf11afSPaul Mackerras support. As of this writing the exact hardware interface is 32514cf11afSPaul Mackerras strongly in flux, so no good recommendation can be made. 32614cf11afSPaul Mackerras 327e8625d46SHaren Myneniconfig CRASH_DUMP 3283420b5daSBernhard Walle bool "Build a kdump crash kernel" 329f8f50b1bSDale Farnsworth depends on (PPC64 && RELOCATABLE) || 6xx 330e8625d46SHaren Myneni help 331e8625d46SHaren Myneni Build a kernel suitable for use as a kdump capture kernel. 33254622f10SMohan Kumar M The same kernel binary can be used as production kernel and dump 33354622f10SMohan Kumar M capture kernel. 334e8625d46SHaren Myneni 335242f271cSManish Ahujaconfig PHYP_DUMP 336242f271cSManish Ahuja bool "Hypervisor-assisted dump (EXPERIMENTAL)" 337242f271cSManish Ahuja depends on PPC_PSERIES && EXPERIMENTAL 338242f271cSManish Ahuja help 339242f271cSManish Ahuja Hypervisor-assisted dump is meant to be a kdump replacement 340242f271cSManish Ahuja offering robustness and speed not possible without system 341242f271cSManish Ahuja hypervisor assistence. 342242f271cSManish Ahuja 343242f271cSManish Ahuja If unsure, say "N" 344242f271cSManish Ahuja 34514cf11afSPaul Mackerrasconfig PPCBUG_NVRAM 34614cf11afSPaul Mackerras bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC 34714cf11afSPaul Mackerras default y if PPC_PREP 34814cf11afSPaul Mackerras 34914cf11afSPaul Mackerrasconfig IRQ_ALL_CPUS 35014cf11afSPaul Mackerras bool "Distribute interrupts on all CPUs by default" 35114cf11afSPaul Mackerras depends on SMP && !MV64360 35214cf11afSPaul Mackerras help 35314cf11afSPaul Mackerras This option gives the kernel permission to distribute IRQs across 35414cf11afSPaul Mackerras multiple CPUs. Saying N here will route all IRQs to the first 35514cf11afSPaul Mackerras CPU. Generally saying Y is safe, although some problems have been 35614cf11afSPaul Mackerras reported with SMP Power Macintoshes with this option enabled. 35714cf11afSPaul Mackerras 358ffa27b6bSAndy Whitcroftconfig NUMA 359ffa27b6bSAndy Whitcroft bool "NUMA support" 360ffa27b6bSAndy Whitcroft depends on PPC64 361ffa27b6bSAndy Whitcroft default y if SMP && PPC_PSERIES 362ffa27b6bSAndy Whitcroft 363c80d79d7SYasunori Gotoconfig NODES_SHIFT 364c80d79d7SYasunori Goto int 365c80d79d7SYasunori Goto default "4" 366c80d79d7SYasunori Goto depends on NEED_MULTIPLE_NODES 367c80d79d7SYasunori Goto 36814cf11afSPaul Mackerrasconfig ARCH_SELECT_MEMORY_MODEL 36914cf11afSPaul Mackerras def_bool y 37014cf11afSPaul Mackerras depends on PPC64 37114cf11afSPaul Mackerras 37214cf11afSPaul Mackerrasconfig ARCH_FLATMEM_ENABLE 37314cf11afSPaul Mackerras def_bool y 3749100b205SAndy Whitcroft depends on (PPC64 && !NUMA) || PPC32 37514cf11afSPaul Mackerras 37614cf11afSPaul Mackerrasconfig ARCH_SPARSEMEM_ENABLE 37714cf11afSPaul Mackerras def_bool y 3789100b205SAndy Whitcroft depends on PPC64 379d29eff7bSAndy Whitcroft select SPARSEMEM_VMEMMAP_ENABLE 38045fb6ceaSAnton Blanchard 38145fb6ceaSAnton Blanchardconfig ARCH_SPARSEMEM_DEFAULT 38245fb6ceaSAnton Blanchard def_bool y 38378bde53eSBenjamin Herrenschmidt depends on (SMP && PPC_PSERIES) || PPC_PS3 38414cf11afSPaul Mackerras 385c67c3cb4SMel Gormanconfig ARCH_POPULATES_NODE_MAP 38614cf11afSPaul Mackerras def_bool y 387c67c3cb4SMel Gorman 388c67c3cb4SMel Gormansource "mm/Kconfig" 38914cf11afSPaul Mackerras 3907e9191daSMike Kravetzconfig ARCH_MEMORY_PROBE 3917e9191daSMike Kravetz def_bool y 3927e9191daSMike Kravetz depends on MEMORY_HOTPLUG 3937e9191daSMike Kravetz 39475167957SAndy Whitcroft# Some NUMA nodes have memory ranges that span 39575167957SAndy Whitcroft# other nodes. Even though a pfn is valid and 39675167957SAndy Whitcroft# between a node's start and end pfns, it may not 39775167957SAndy Whitcroft# reside on that node. See memmap_init_zone() 39875167957SAndy Whitcroft# for details. 39975167957SAndy Whitcroftconfig NODES_SPAN_OTHER_NODES 40075167957SAndy Whitcroft def_bool y 40175167957SAndy Whitcroft depends on NEED_MULTIPLE_NODES 40275167957SAndy Whitcroft 40316c2d476SBenjamin Herrenschmidtconfig PPC_HAS_HASH_64K 40416c2d476SBenjamin Herrenschmidt bool 40516c2d476SBenjamin Herrenschmidt depends on PPC64 40616c2d476SBenjamin Herrenschmidt default n 40716c2d476SBenjamin Herrenschmidt 408*ca9153a3SIlya Yanokchoice 409*ca9153a3SIlya Yanok prompt "Page size" 410*ca9153a3SIlya Yanok default PPC_4K_PAGES 4113c726f8dSBenjamin Herrenschmidt help 412*ca9153a3SIlya Yanok Select the kernel logical page size. Increasing the page size 413*ca9153a3SIlya Yanok will reduce software overhead at each page boundary, allow 414*ca9153a3SIlya Yanok hardware prefetch mechanisms to be more effective, and allow 415*ca9153a3SIlya Yanok larger dma transfers increasing IO efficiency and reducing 416*ca9153a3SIlya Yanok overhead. However the utilization of memory will increase. 417*ca9153a3SIlya Yanok For example, each cached file will using a multiple of the 418*ca9153a3SIlya Yanok page size to hold its contents and the difference between the 419*ca9153a3SIlya Yanok end of file and the end of page is wasted. 420*ca9153a3SIlya Yanok 421*ca9153a3SIlya Yanok Some dedicated systems, such as software raid serving with 422*ca9153a3SIlya Yanok accelerated calculations, have shown significant increases. 423*ca9153a3SIlya Yanok 424*ca9153a3SIlya Yanok If you configure a 64 bit kernel for 64k pages but the 425*ca9153a3SIlya Yanok processor does not support them, then the kernel will simulate 426*ca9153a3SIlya Yanok them with 4k pages, loading them on demand, but with the 427*ca9153a3SIlya Yanok reduced software overhead and larger internal fragmentation. 428*ca9153a3SIlya Yanok For the 32 bit kernel, a large page option will not be offered 429*ca9153a3SIlya Yanok unless it is supported by the configured processor. 430*ca9153a3SIlya Yanok 431*ca9153a3SIlya Yanok If unsure, choose 4K_PAGES. 432*ca9153a3SIlya Yanok 433*ca9153a3SIlya Yanokconfig PPC_4K_PAGES 434*ca9153a3SIlya Yanok bool "4k page size" 435*ca9153a3SIlya Yanok 436*ca9153a3SIlya Yanokconfig PPC_16K_PAGES 437*ca9153a3SIlya Yanok bool "16k page size" if 44x 438*ca9153a3SIlya Yanok 439*ca9153a3SIlya Yanokconfig PPC_64K_PAGES 440*ca9153a3SIlya Yanok bool "64k page size" if 44x || PPC_STD_MMU_64 441*ca9153a3SIlya Yanok select PPC_HAS_HASH_64K if PPC_STD_MMU_64 442*ca9153a3SIlya Yanok 443*ca9153a3SIlya Yanokendchoice 4443c726f8dSBenjamin Herrenschmidt 44553bcddb9SStephen Rothwellconfig FORCE_MAX_ZONEORDER 44653bcddb9SStephen Rothwell int "Maximum zone order" 447*ca9153a3SIlya Yanok range 9 64 if PPC_STD_MMU_64 && PPC_64K_PAGES 448*ca9153a3SIlya Yanok default "9" if PPC_STD_MMU_64 && PPC_64K_PAGES 449*ca9153a3SIlya Yanok range 13 64 if PPC_STD_MMU_64 && !PPC_64K_PAGES 450*ca9153a3SIlya Yanok default "13" if PPC_STD_MMU_64 && !PPC_64K_PAGES 451*ca9153a3SIlya Yanok range 9 64 if PPC_STD_MMU_32 && PPC_16K_PAGES 452*ca9153a3SIlya Yanok default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES 453*ca9153a3SIlya Yanok range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES 454*ca9153a3SIlya Yanok default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES 455ebe40c5cSJohannes Berg range 11 64 45653bcddb9SStephen Rothwell default "11" 45753bcddb9SStephen Rothwell help 45853bcddb9SStephen Rothwell The kernel memory allocator divides physically contiguous memory 45953bcddb9SStephen Rothwell blocks into "zones", where each zone is a power of two number of 46053bcddb9SStephen Rothwell pages. This option selects the largest power of two that the kernel 46153bcddb9SStephen Rothwell keeps in the memory allocator. If you need to allocate very large 46253bcddb9SStephen Rothwell blocks of physically contiguous memory, then you may need to 46353bcddb9SStephen Rothwell increase this value. 46453bcddb9SStephen Rothwell 46553bcddb9SStephen Rothwell This config option is actually maximum order plus one. For example, 46653bcddb9SStephen Rothwell a value of 11 means that the largest free memory block is 2^10 pages. 46753bcddb9SStephen Rothwell 46853bcddb9SStephen Rothwell The page size is not necessarily 4KB. For example, on 64-bit 46953bcddb9SStephen Rothwell systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 47053bcddb9SStephen Rothwell this in mind when choosing a value for this option. 47153bcddb9SStephen Rothwell 472fa28237cSPaul Mackerrasconfig PPC_SUBPAGE_PROT 473fa28237cSPaul Mackerras bool "Support setting protections for 4k subpages" 474*ca9153a3SIlya Yanok depends on PPC_STD_MMU_64 && PPC_64K_PAGES 475fa28237cSPaul Mackerras help 476fa28237cSPaul Mackerras This option adds support for a system call to allow user programs 477fa28237cSPaul Mackerras to set access permissions (read/write, readonly, or no access) 478fa28237cSPaul Mackerras on the 4k subpages of each 64k page. 479fa28237cSPaul Mackerras 48014cf11afSPaul Mackerrasconfig SCHED_SMT 48114cf11afSPaul Mackerras bool "SMT (Hyperthreading) scheduler support" 48214cf11afSPaul Mackerras depends on PPC64 && SMP 48314cf11afSPaul Mackerras help 48414cf11afSPaul Mackerras SMT scheduler support improves the CPU scheduler's decision making 48514cf11afSPaul Mackerras when dealing with POWER5 cpus at a cost of slightly increased 48614cf11afSPaul Mackerras overhead in some places. If unsure say N here. 48714cf11afSPaul Mackerras 48814cf11afSPaul Mackerrasconfig PROC_DEVICETREE 4895f296755SPaul Mackerras bool "Support for device tree in /proc" 4905f296755SPaul Mackerras depends on PROC_FS 49114cf11afSPaul Mackerras help 49214cf11afSPaul Mackerras This option adds a device-tree directory under /proc which contains 49314cf11afSPaul Mackerras an image of the device tree that the kernel copies from Open 4945f296755SPaul Mackerras Firmware or other boot firmware. If unsure, say Y here. 49514cf11afSPaul Mackerras 49614cf11afSPaul Mackerrasconfig CMDLINE_BOOL 49714cf11afSPaul Mackerras bool "Default bootloader kernel arguments" 49814cf11afSPaul Mackerras 49914cf11afSPaul Mackerrasconfig CMDLINE 50014cf11afSPaul Mackerras string "Initial kernel command string" 50114cf11afSPaul Mackerras depends on CMDLINE_BOOL 50214cf11afSPaul Mackerras default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 50314cf11afSPaul Mackerras help 50414cf11afSPaul Mackerras On some platforms, there is currently no way for the boot loader to 50514cf11afSPaul Mackerras pass arguments to the kernel. For these platforms, you can supply 50614cf11afSPaul Mackerras some command-line options at build time by entering them here. In 50714cf11afSPaul Mackerras most cases you will need to specify the root device here. 50814cf11afSPaul Mackerras 509c356aa45SGrant Likelyconfig EXTRA_TARGETS 510c356aa45SGrant Likely string "Additional default image types" 511c356aa45SGrant Likely help 512c356aa45SGrant Likely List additional targets to be built by the bootwrapper here (separated 513c356aa45SGrant Likely by spaces). This is useful for targets that depend of device tree 514c356aa45SGrant Likely files in the .dts directory. 515c356aa45SGrant Likely 516c356aa45SGrant Likely Targets in this list will be build as part of the default build 517c356aa45SGrant Likely target, or when the user does a 'make zImage' or a 518c356aa45SGrant Likely 'make zImage.initrd'. 519c356aa45SGrant Likely 520c356aa45SGrant Likely If unsure, leave blank 521c356aa45SGrant Likely 52214cf11afSPaul Mackerrasif !44x || BROKEN 523b28f5081SJohannes Bergconfig ARCH_WANTS_FREEZER_CONTROL 524b28f5081SJohannes Berg def_bool y 525b28f5081SJohannes Berg depends on ADB_PMU 526b28f5081SJohannes Berg 52714cf11afSPaul Mackerrassource kernel/power/Kconfig 52814cf11afSPaul Mackerrasendif 52914cf11afSPaul Mackerras 53014cf11afSPaul Mackerrasconfig SECCOMP 53114cf11afSPaul Mackerras bool "Enable seccomp to safely compute untrusted bytecode" 53214cf11afSPaul Mackerras depends on PROC_FS 53314cf11afSPaul Mackerras default y 53414cf11afSPaul Mackerras help 53514cf11afSPaul Mackerras This kernel feature is useful for number crunching applications 53614cf11afSPaul Mackerras that may need to compute untrusted bytecode during their 53714cf11afSPaul Mackerras execution. By using pipes or other transports made available to 53814cf11afSPaul Mackerras the process as file descriptors supporting the read/write 53914cf11afSPaul Mackerras syscalls, it's possible to isolate those applications in 54014cf11afSPaul Mackerras their own address space using seccomp. Once seccomp is 54114cf11afSPaul Mackerras enabled via /proc/<pid>/seccomp, it cannot be disabled 54214cf11afSPaul Mackerras and the task is only allowed to execute a few safe syscalls 54314cf11afSPaul Mackerras defined by each seccomp mode. 54414cf11afSPaul Mackerras 54514cf11afSPaul Mackerras If unsure, say Y. Only embedded should say N here. 54614cf11afSPaul Mackerras 54714cf11afSPaul Mackerrasendmenu 54814cf11afSPaul Mackerras 54914cf11afSPaul Mackerrasconfig ISA_DMA_API 55014cf11afSPaul Mackerras bool 551373a6da1SStephen Rothwell default !PPC_ISERIES || PCI 55214cf11afSPaul Mackerras 55314cf11afSPaul Mackerrasmenu "Bus options" 55414cf11afSPaul Mackerras 55514cf11afSPaul Mackerrasconfig ISA 55614cf11afSPaul Mackerras bool "Support for ISA-bus hardware" 55714cf11afSPaul Mackerras depends on PPC_PREP || PPC_CHRP 558f9bd170aSPaul Mackerras select PPC_I8259 55914cf11afSPaul Mackerras help 56014cf11afSPaul Mackerras Find out whether you have ISA slots on your motherboard. ISA is the 56114cf11afSPaul Mackerras name of a bus system, i.e. the way the CPU talks to the other stuff 56214cf11afSPaul Mackerras inside your box. If you have an Apple machine, say N here; if you 56314cf11afSPaul Mackerras have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If 56414cf11afSPaul Mackerras you have an embedded board, consult your board documentation. 56514cf11afSPaul Mackerras 5665ac6da66SChristoph Lameterconfig ZONE_DMA 5675ac6da66SChristoph Lameter bool 5685ac6da66SChristoph Lameter default y 5695ac6da66SChristoph Lameter 57014cf11afSPaul Mackerrasconfig GENERIC_ISA_DMA 57114cf11afSPaul Mackerras bool 57214cf11afSPaul Mackerras depends on PPC64 || POWER4 || 6xx && !CPM2 57314cf11afSPaul Mackerras default y 57414cf11afSPaul Mackerras 57525635c71SPaul Mackerrasconfig PPC_INDIRECT_PCI 57625635c71SPaul Mackerras bool 57725635c71SPaul Mackerras depends on PCI 57863dafe57SBecky Bruce default y if 40x || 44x 57925635c71SPaul Mackerras default n 58025635c71SPaul Mackerras 58114cf11afSPaul Mackerrasconfig EISA 58214cf11afSPaul Mackerras bool 58314cf11afSPaul Mackerras 58414cf11afSPaul Mackerrasconfig SBUS 58514cf11afSPaul Mackerras bool 58614cf11afSPaul Mackerras 58708264cbcSKumar Galaconfig FSL_SOC 58808264cbcSKumar Gala bool 58908264cbcSKumar Gala 59055c44991SRoy Zangconfig FSL_PCI 59155c44991SRoy Zang bool 59255c44991SRoy Zang select PPC_INDIRECT_PCI 59355c44991SRoy Zang 5942a706919SStefan Roeseconfig 4xx_SOC 5952a706919SStefan Roese bool 5962a706919SStefan Roese 597acaa7aa3SAnton Vorontsovconfig FSL_LBC 598acaa7aa3SAnton Vorontsov bool 599acaa7aa3SAnton Vorontsov help 600acaa7aa3SAnton Vorontsov Freescale Localbus support 601acaa7aa3SAnton Vorontsov 60283ff9dcfSAnton Vorontsovconfig FSL_GTM 60383ff9dcfSAnton Vorontsov bool 60483ff9dcfSAnton Vorontsov depends on PPC_83xx || QUICC_ENGINE || CPM2 60583ff9dcfSAnton Vorontsov help 60683ff9dcfSAnton Vorontsov Freescale General-purpose Timers support 60783ff9dcfSAnton Vorontsov 60814cf11afSPaul Mackerras# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 60914cf11afSPaul Mackerrasconfig MCA 61014cf11afSPaul Mackerras bool 61114cf11afSPaul Mackerras 612b500563bSJohn Rigby# Platforms that what PCI turned unconditionally just do select PCI 613b500563bSJohn Rigby# in their config node. Platforms that want to choose at config 614b500563bSJohn Rigby# time should select PPC_PCI_CHOICE 615b500563bSJohn Rigbyconfig PPC_PCI_CHOICE 616b500563bSJohn Rigby bool 617b500563bSJohn Rigby 61814cf11afSPaul Mackerrasconfig PCI 619b500563bSJohn Rigby bool "PCI support" if PPC_PCI_CHOICE 620b500563bSJohn Rigby default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 62153158620SJon Loeliger && !PPC_85xx && !PPC_86xx 622f21f49eaSDavid Gibson default PCI_PERMEDIA if !4xx && !CPM2 && !8xx 62314cf11afSPaul Mackerras default PCI_QSPAN if !4xx && !CPM2 && 8xx 624df87ef55SMichael Ellerman select ARCH_SUPPORTS_MSI 62514cf11afSPaul Mackerras help 62614cf11afSPaul Mackerras Find out whether your system includes a PCI bus. PCI is the name of 62714cf11afSPaul Mackerras a bus system, i.e. the way the CPU talks to the other stuff inside 62814cf11afSPaul Mackerras your box. If you say Y here, the kernel will include drivers and 62914cf11afSPaul Mackerras infrastructure code to support PCI bus devices. 63014cf11afSPaul Mackerras 63114cf11afSPaul Mackerrasconfig PCI_DOMAINS 63236e23590SMatthew Wilcox def_bool PCI 63336e23590SMatthew Wilcox 63436e23590SMatthew Wilcoxconfig PCI_SYSCALL 63536e23590SMatthew Wilcox def_bool PCI 63614cf11afSPaul Mackerras 63714cf11afSPaul Mackerrasconfig PCI_QSPAN 63814cf11afSPaul Mackerras bool "QSpan PCI" 63914cf11afSPaul Mackerras depends on !4xx && !CPM2 && 8xx 640f9bd170aSPaul Mackerras select PPC_I8259 64114cf11afSPaul Mackerras help 64214cf11afSPaul Mackerras Say Y here if you have a system based on a Motorola 8xx-series 64314cf11afSPaul Mackerras embedded processor with a QSPAN PCI interface, otherwise say N. 64414cf11afSPaul Mackerras 64514cf11afSPaul Mackerrasconfig PCI_8260 64614cf11afSPaul Mackerras bool 64714cf11afSPaul Mackerras depends on PCI && 8260 64825635c71SPaul Mackerras select PPC_INDIRECT_PCI 64914cf11afSPaul Mackerras default y 65014cf11afSPaul Mackerras 65114cf11afSPaul Mackerrasconfig 8260_PCI9 65214cf11afSPaul Mackerras bool "Enable workaround for MPC826x erratum PCI 9" 653e00c5498SScott Wood depends on PCI_8260 && !8272 65414cf11afSPaul Mackerras default y 65514cf11afSPaul Mackerras 65614cf11afSPaul Mackerraschoice 65714cf11afSPaul Mackerras prompt "IDMA channel for PCI 9 workaround" 65814cf11afSPaul Mackerras depends on 8260_PCI9 65914cf11afSPaul Mackerras 66014cf11afSPaul Mackerrasconfig 8260_PCI9_IDMA1 66114cf11afSPaul Mackerras bool "IDMA1" 66214cf11afSPaul Mackerras 66314cf11afSPaul Mackerrasconfig 8260_PCI9_IDMA2 66414cf11afSPaul Mackerras bool "IDMA2" 66514cf11afSPaul Mackerras 66614cf11afSPaul Mackerrasconfig 8260_PCI9_IDMA3 66714cf11afSPaul Mackerras bool "IDMA3" 66814cf11afSPaul Mackerras 66914cf11afSPaul Mackerrasconfig 8260_PCI9_IDMA4 67014cf11afSPaul Mackerras bool "IDMA4" 67114cf11afSPaul Mackerras 67214cf11afSPaul Mackerrasendchoice 67314cf11afSPaul Mackerras 674bb53bb3dSJake Moilanensource "drivers/pci/pcie/Kconfig" 675bb53bb3dSJake Moilanen 67614cf11afSPaul Mackerrassource "drivers/pci/Kconfig" 67714cf11afSPaul Mackerras 67814cf11afSPaul Mackerrassource "drivers/pcmcia/Kconfig" 67914cf11afSPaul Mackerras 68014cf11afSPaul Mackerrassource "drivers/pci/hotplug/Kconfig" 68114cf11afSPaul Mackerras 682f1f389d5SZhang Weiconfig HAS_RAPIDIO 683f1f389d5SZhang Wei bool 684f1f389d5SZhang Wei default n 685f1f389d5SZhang Wei 686f1f389d5SZhang Weiconfig RAPIDIO 687f1f389d5SZhang Wei bool "RapidIO support" 688f1f389d5SZhang Wei depends on HAS_RAPIDIO 689f1f389d5SZhang Wei help 690f1f389d5SZhang Wei If you say Y here, the kernel will include drivers and 691f1f389d5SZhang Wei infrastructure code to support RapidIO interconnect devices. 692f1f389d5SZhang Wei 693f1f389d5SZhang Weisource "drivers/rapidio/Kconfig" 694f1f389d5SZhang Wei 69514cf11afSPaul Mackerrasendmenu 69614cf11afSPaul Mackerras 69714cf11afSPaul Mackerrasmenu "Advanced setup" 69814cf11afSPaul Mackerras depends on PPC32 69914cf11afSPaul Mackerras 70014cf11afSPaul Mackerrasconfig ADVANCED_OPTIONS 70114cf11afSPaul Mackerras bool "Prompt for advanced kernel configuration options" 70214cf11afSPaul Mackerras help 70314cf11afSPaul Mackerras This option will enable prompting for a variety of advanced kernel 70414cf11afSPaul Mackerras configuration options. These options can cause the kernel to not 70514cf11afSPaul Mackerras work if they are set incorrectly, but can be used to optimize certain 70614cf11afSPaul Mackerras aspects of kernel memory management. 70714cf11afSPaul Mackerras 70814cf11afSPaul Mackerras Unless you know what you are doing, say N here. 70914cf11afSPaul Mackerras 71014cf11afSPaul Mackerrascomment "Default settings for advanced configuration options are used" 71114cf11afSPaul Mackerras depends on !ADVANCED_OPTIONS 71214cf11afSPaul Mackerras 71314cf11afSPaul Mackerrasconfig LOWMEM_SIZE_BOOL 71414cf11afSPaul Mackerras bool "Set maximum low memory" 71514cf11afSPaul Mackerras depends on ADVANCED_OPTIONS 71614cf11afSPaul Mackerras help 71714cf11afSPaul Mackerras This option allows you to set the maximum amount of memory which 71814cf11afSPaul Mackerras will be used as "low memory", that is, memory which the kernel can 71914cf11afSPaul Mackerras access directly, without having to set up a kernel virtual mapping. 72014cf11afSPaul Mackerras This can be useful in optimizing the layout of kernel virtual 72114cf11afSPaul Mackerras memory. 72214cf11afSPaul Mackerras 72314cf11afSPaul Mackerras Say N here unless you know what you are doing. 72414cf11afSPaul Mackerras 72514cf11afSPaul Mackerrasconfig LOWMEM_SIZE 72614cf11afSPaul Mackerras hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 72714cf11afSPaul Mackerras default "0x30000000" 72814cf11afSPaul Mackerras 72937dd2badSKumar Galaconfig RELOCATABLE 73037dd2badSKumar Gala bool "Build a relocatable kernel (EXPERIMENTAL)" 73137dd2badSKumar Gala depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 73237dd2badSKumar Gala help 73337dd2badSKumar Gala This builds a kernel image that is capable of running at the 73437dd2badSKumar Gala location the kernel is loaded at (some alignment restrictions may 73537dd2badSKumar Gala exist). 73637dd2badSKumar Gala 73737dd2badSKumar Gala One use is for the kexec on panic case where the recovery kernel 73837dd2badSKumar Gala must live at a different physical address than the primary 73937dd2badSKumar Gala kernel. 74037dd2badSKumar Gala 74137dd2badSKumar Gala Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 74237dd2badSKumar Gala it has been loaded at and the compile time physical addresses 74337dd2badSKumar Gala CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 74437dd2badSKumar Gala setting can still be useful to bootwrappers that need to know the 74537dd2badSKumar Gala load location of the kernel (eg. u-boot/mkimage). 74637dd2badSKumar Gala 74737dd2badSKumar Galaconfig PAGE_OFFSET_BOOL 74837dd2badSKumar Gala bool "Set custom page offset address" 74937dd2badSKumar Gala depends on ADVANCED_OPTIONS 75037dd2badSKumar Gala help 75137dd2badSKumar Gala This option allows you to set the kernel virtual address at which 75237dd2badSKumar Gala the kernel will map low memory. This can be useful in optimizing 75337dd2badSKumar Gala the virtual memory layout of the system. 75437dd2badSKumar Gala 75537dd2badSKumar Gala Say N here unless you know what you are doing. 75637dd2badSKumar Gala 75737dd2badSKumar Galaconfig PAGE_OFFSET 75837dd2badSKumar Gala hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 75937dd2badSKumar Gala default "0xc0000000" 76037dd2badSKumar Gala 76114cf11afSPaul Mackerrasconfig KERNEL_START_BOOL 76214cf11afSPaul Mackerras bool "Set custom kernel base address" 76314cf11afSPaul Mackerras depends on ADVANCED_OPTIONS 76414cf11afSPaul Mackerras help 76514cf11afSPaul Mackerras This option allows you to set the kernel virtual address at which 76637dd2badSKumar Gala the kernel will be loaded. Normally this should match PAGE_OFFSET 76737dd2badSKumar Gala however there are times (like kdump) that one might not want them 76837dd2badSKumar Gala to be the same. 76914cf11afSPaul Mackerras 77014cf11afSPaul Mackerras Say N here unless you know what you are doing. 77114cf11afSPaul Mackerras 77214cf11afSPaul Mackerrasconfig KERNEL_START 77314cf11afSPaul Mackerras hex "Virtual address of kernel base" if KERNEL_START_BOOL 77437dd2badSKumar Gala default PAGE_OFFSET if PAGE_OFFSET_BOOL 77537dd2badSKumar Gala default "0xc2000000" if CRASH_DUMP 77614cf11afSPaul Mackerras default "0xc0000000" 77714cf11afSPaul Mackerras 77837dd2badSKumar Galaconfig PHYSICAL_START_BOOL 77937dd2badSKumar Gala bool "Set physical address where the kernel is loaded" 78037dd2badSKumar Gala depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 78137dd2badSKumar Gala help 78237dd2badSKumar Gala This gives the physical address where the kernel is loaded. 78337dd2badSKumar Gala 78437dd2badSKumar Gala Say N here unless you know what you are doing. 78537dd2badSKumar Gala 78637dd2badSKumar Galaconfig PHYSICAL_START 78737dd2badSKumar Gala hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 78837dd2badSKumar Gala default "0x02000000" if PPC_STD_MMU && CRASH_DUMP 78937dd2badSKumar Gala default "0x00000000" 79037dd2badSKumar Gala 79137dd2badSKumar Galaconfig PHYSICAL_ALIGN 79237dd2badSKumar Gala hex 79337dd2badSKumar Gala default "0x10000000" if FSL_BOOKE 79437dd2badSKumar Gala help 79537dd2badSKumar Gala This value puts the alignment restrictions on physical address 79637dd2badSKumar Gala where kernel is loaded and run from. Kernel is compiled for an 79737dd2badSKumar Gala address which meets above alignment restriction. 79837dd2badSKumar Gala 79914cf11afSPaul Mackerrasconfig TASK_SIZE_BOOL 80014cf11afSPaul Mackerras bool "Set custom user task size" 80114cf11afSPaul Mackerras depends on ADVANCED_OPTIONS 80214cf11afSPaul Mackerras help 80314cf11afSPaul Mackerras This option allows you to set the amount of virtual address space 80414cf11afSPaul Mackerras allocated to user tasks. This can be useful in optimizing the 80514cf11afSPaul Mackerras virtual memory layout of the system. 80614cf11afSPaul Mackerras 80714cf11afSPaul Mackerras Say N here unless you know what you are doing. 80814cf11afSPaul Mackerras 80914cf11afSPaul Mackerrasconfig TASK_SIZE 81014cf11afSPaul Mackerras hex "Size of user task space" if TASK_SIZE_BOOL 8114d9e5510SKumar Gala default "0x80000000" if PPC_PREP || PPC_8xx 8124d9e5510SKumar Gala default "0xc0000000" 81314cf11afSPaul Mackerras 81414cf11afSPaul Mackerrasconfig CONSISTENT_START_BOOL 81514cf11afSPaul Mackerras bool "Set custom consistent memory pool address" 81614cf11afSPaul Mackerras depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 81714cf11afSPaul Mackerras help 81814cf11afSPaul Mackerras This option allows you to set the base virtual address 8194b3f686dSMatt LaPlante of the consistent memory pool. This pool of virtual 82014cf11afSPaul Mackerras memory is used to make consistent memory allocations. 82114cf11afSPaul Mackerras 82214cf11afSPaul Mackerrasconfig CONSISTENT_START 82314cf11afSPaul Mackerras hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL 824ccf0d68eSScott Wood default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx) 82514cf11afSPaul Mackerras default "0xff100000" if NOT_COHERENT_CACHE 82614cf11afSPaul Mackerras 82714cf11afSPaul Mackerrasconfig CONSISTENT_SIZE_BOOL 82814cf11afSPaul Mackerras bool "Set custom consistent memory pool size" 82914cf11afSPaul Mackerras depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 83014cf11afSPaul Mackerras help 8314b3f686dSMatt LaPlante This option allows you to set the size of the 83214cf11afSPaul Mackerras consistent memory pool. This pool of virtual memory 83314cf11afSPaul Mackerras is used to make consistent memory allocations. 83414cf11afSPaul Mackerras 83514cf11afSPaul Mackerrasconfig CONSISTENT_SIZE 83614cf11afSPaul Mackerras hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 83714cf11afSPaul Mackerras default "0x00200000" if NOT_COHERENT_CACHE 83814cf11afSPaul Mackerras 83914cf11afSPaul Mackerrasconfig PIN_TLB 84014cf11afSPaul Mackerras bool "Pinned Kernel TLBs (860 ONLY)" 84114cf11afSPaul Mackerras depends on ADVANCED_OPTIONS && 8xx 84214cf11afSPaul Mackerrasendmenu 84314cf11afSPaul Mackerras 844cabb5587SStephen Rothwellif PPC64 845549e8152SPaul Mackerrasconfig RELOCATABLE 846549e8152SPaul Mackerras bool "Build a relocatable kernel" 847549e8152SPaul Mackerras help 848549e8152SPaul Mackerras This builds a kernel image that is capable of running anywhere 849549e8152SPaul Mackerras in the RMA (real memory area) at any 16k-aligned base address. 850549e8152SPaul Mackerras The kernel is linked as a position-independent executable (PIE) 851549e8152SPaul Mackerras and contains dynamic relocations which are processed early 852549e8152SPaul Mackerras in the bootup process. 853549e8152SPaul Mackerras 854549e8152SPaul Mackerras One use is for the kexec on panic case where the recovery kernel 855549e8152SPaul Mackerras must live at a different physical address than the primary 856549e8152SPaul Mackerras kernel. 857549e8152SPaul Mackerras 85837dd2badSKumar Galaconfig PAGE_OFFSET 859cabb5587SStephen Rothwell hex 860eeb2d218SStephen Rothwell default "0xc000000000000000" 86137dd2badSKumar Galaconfig KERNEL_START 86237dd2badSKumar Gala hex 86337dd2badSKumar Gala default "0xc000000000000000" 86437dd2badSKumar Galaconfig PHYSICAL_START 86537dd2badSKumar Gala hex 86637dd2badSKumar Gala default "0x00000000" 867cabb5587SStephen Rothwellendif 868cabb5587SStephen Rothwell 86914cf11afSPaul Mackerrassource "net/Kconfig" 87014cf11afSPaul Mackerras 87114cf11afSPaul Mackerrassource "drivers/Kconfig" 87214cf11afSPaul Mackerras 87314cf11afSPaul Mackerrassource "fs/Kconfig" 87414cf11afSPaul Mackerras 87514cf11afSPaul Mackerras# XXX source "arch/ppc/8xx_io/Kconfig" 87614cf11afSPaul Mackerras 87714cf11afSPaul Mackerras# XXX source "arch/ppc/8260_io/Kconfig" 87814cf11afSPaul Mackerras 87998658538SLi Yangsource "arch/powerpc/sysdev/qe_lib/Kconfig" 88098658538SLi Yang 88114cf11afSPaul Mackerrassource "lib/Kconfig" 88214cf11afSPaul Mackerras 88314cf11afSPaul Mackerrassource "arch/powerpc/Kconfig.debug" 88414cf11afSPaul Mackerras 88514cf11afSPaul Mackerrassource "security/Kconfig" 88614cf11afSPaul Mackerras 88714cf11afSPaul Mackerrasconfig KEYS_COMPAT 88814cf11afSPaul Mackerras bool 88914cf11afSPaul Mackerras depends on COMPAT && KEYS 89014cf11afSPaul Mackerras default y 89114cf11afSPaul Mackerras 89214cf11afSPaul Mackerrassource "crypto/Kconfig" 8936f668280SDomen Puncer 8946f668280SDomen Puncerconfig PPC_CLOCK 8956f668280SDomen Puncer bool 8966f668280SDomen Puncer default n 8979483a578SDavid Brownell select HAVE_CLK 8981088a209SSylvain Munaut 8991088a209SSylvain Munautconfig PPC_LIB_RHEAP 9001088a209SSylvain Munaut bool 9011088a209SSylvain Munaut 902bbf45ba5SHollis Blanchardsource "arch/powerpc/kvm/Kconfig" 903