1source "arch/powerpc/platforms/Kconfig.cputype" 2 3config PPC32 4 bool 5 default y if !PPC64 6 7config 32BIT 8 bool 9 default y if PPC32 10 11config 64BIT 12 bool 13 default y if PPC64 14 15config WORD_SIZE 16 int 17 default 64 if PPC64 18 default 32 if !PPC64 19 20config ARCH_PHYS_ADDR_T_64BIT 21 def_bool PPC64 || PHYS_64BIT 22 23config ARCH_DMA_ADDR_T_64BIT 24 def_bool ARCH_PHYS_ADDR_T_64BIT 25 26config MMU 27 bool 28 default y 29 30config HAVE_SETUP_PER_CPU_AREA 31 def_bool PPC64 32 33config NEED_PER_CPU_EMBED_FIRST_CHUNK 34 def_bool PPC64 35 36config NR_IRQS 37 int "Number of virtual interrupt numbers" 38 range 32 32768 39 default "512" 40 help 41 This defines the number of virtual interrupt numbers the kernel 42 can manage. Virtual interrupt numbers are what you see in 43 /proc/interrupts. If you configure your system to have too few, 44 drivers will fail to load or worse - handle with care. 45 46config STACKTRACE_SUPPORT 47 bool 48 default y 49 50config HAVE_LATENCYTOP_SUPPORT 51 def_bool y 52 53config TRACE_IRQFLAGS_SUPPORT 54 bool 55 default y 56 57config LOCKDEP_SUPPORT 58 bool 59 default y 60 61config RWSEM_GENERIC_SPINLOCK 62 bool 63 64config RWSEM_XCHGADD_ALGORITHM 65 bool 66 default y 67 68config GENERIC_LOCKBREAK 69 bool 70 default y 71 depends on SMP && PREEMPT 72 73config ARCH_HAS_ILOG2_U32 74 bool 75 default y 76 77config ARCH_HAS_ILOG2_U64 78 bool 79 default y if 64BIT 80 81config GENERIC_HWEIGHT 82 bool 83 default y 84 85config PPC 86 bool 87 default y 88 select ARCH_MIGHT_HAVE_PC_PARPORT 89 select ARCH_MIGHT_HAVE_PC_SERIO 90 select BINFMT_ELF 91 select OF 92 select OF_EARLY_FLATTREE 93 select OF_RESERVED_MEM 94 select HAVE_FTRACE_MCOUNT_RECORD 95 select HAVE_DYNAMIC_FTRACE 96 select HAVE_FUNCTION_TRACER 97 select HAVE_FUNCTION_GRAPH_TRACER 98 select SYSCTL_EXCEPTION_TRACE 99 select ARCH_WANT_OPTIONAL_GPIOLIB 100 select VIRT_TO_BUS if !PPC64 101 select HAVE_IDE 102 select HAVE_IOREMAP_PROT 103 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN 104 select HAVE_KPROBES 105 select HAVE_ARCH_KGDB 106 select HAVE_KRETPROBES 107 select HAVE_ARCH_TRACEHOOK 108 select HAVE_MEMBLOCK 109 select HAVE_MEMBLOCK_NODE_MAP 110 select HAVE_DMA_ATTRS 111 select HAVE_DMA_API_DEBUG 112 select HAVE_OPROFILE 113 select HAVE_DEBUG_KMEMLEAK 114 select GENERIC_ATOMIC64 if PPC32 115 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 116 select HAVE_PERF_EVENTS 117 select HAVE_REGS_AND_STACK_ACCESS_API 118 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 119 select ARCH_WANT_IPC_PARSE_VERSION 120 select SPARSE_IRQ 121 select IRQ_DOMAIN 122 select GENERIC_IRQ_SHOW 123 select GENERIC_IRQ_SHOW_LEVEL 124 select IRQ_FORCED_THREADING 125 select HAVE_RCU_TABLE_FREE if SMP 126 select HAVE_SYSCALL_TRACEPOINTS 127 select HAVE_BPF_JIT if PPC64 128 select HAVE_ARCH_JUMP_LABEL 129 select ARCH_HAVE_NMI_SAFE_CMPXCHG 130 select GENERIC_SMP_IDLE_THREAD 131 select GENERIC_CMOS_UPDATE 132 select GENERIC_TIME_VSYSCALL_OLD 133 select GENERIC_CLOCKEVENTS 134 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 135 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 136 select GENERIC_STRNCPY_FROM_USER 137 select GENERIC_STRNLEN_USER 138 select HAVE_MOD_ARCH_SPECIFIC 139 select MODULES_USE_ELF_RELA 140 select CLONE_BACKWARDS 141 select ARCH_USE_BUILTIN_BSWAP 142 select OLD_SIGSUSPEND 143 select OLD_SIGACTION if PPC32 144 select HAVE_DEBUG_STACKOVERFLOW 145 select HAVE_IRQ_EXIT_ON_IRQ_STACK 146 select ARCH_USE_CMPXCHG_LOCKREF if PPC64 147 select HAVE_ARCH_AUDITSYSCALL 148 149config GENERIC_CSUM 150 def_bool CPU_LITTLE_ENDIAN 151 152config EARLY_PRINTK 153 bool 154 default y 155 156config PANIC_TIMEOUT 157 int 158 default 180 159 160config COMPAT 161 bool 162 default y if PPC64 163 select COMPAT_BINFMT_ELF 164 select ARCH_WANT_OLD_COMPAT_IPC 165 select COMPAT_OLD_SIGACTION 166 167config SYSVIPC_COMPAT 168 bool 169 depends on COMPAT && SYSVIPC 170 default y 171 172# All PPC32s use generic nvram driver through ppc_md 173config GENERIC_NVRAM 174 bool 175 default y if PPC32 176 177config SCHED_OMIT_FRAME_POINTER 178 bool 179 default y 180 181config ARCH_MAY_HAVE_PC_FDC 182 bool 183 default !PPC_PSERIES || PCI 184 185config PPC_OF 186 def_bool y 187 188config PPC_UDBG_16550 189 bool 190 default n 191 192config GENERIC_TBSYNC 193 bool 194 default y if PPC32 && SMP 195 default n 196 197config AUDIT_ARCH 198 bool 199 default y 200 201config GENERIC_BUG 202 bool 203 default y 204 depends on BUG 205 206config SYS_SUPPORTS_APM_EMULATION 207 default y if PMAC_APM_EMU 208 bool 209 210config EPAPR_BOOT 211 bool 212 help 213 Used to allow a board to specify it wants an ePAPR compliant wrapper. 214 default n 215 216config DEFAULT_UIMAGE 217 bool 218 help 219 Used to allow a board to specify it wants a uImage built by default 220 default n 221 222config ARCH_HIBERNATION_POSSIBLE 223 bool 224 default y 225 226config ARCH_SUSPEND_POSSIBLE 227 def_bool y 228 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ 229 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ 230 || 44x || 40x 231 232config PPC_DCR_NATIVE 233 bool 234 default n 235 236config PPC_DCR_MMIO 237 bool 238 default n 239 240config PPC_DCR 241 bool 242 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO 243 default y 244 245config PPC_OF_PLATFORM_PCI 246 bool 247 depends on PCI 248 depends on PPC64 # not supported on 32 bits yet 249 default n 250 251config ARCH_SUPPORTS_DEBUG_PAGEALLOC 252 def_bool y 253 254config ARCH_SUPPORTS_UPROBES 255 def_bool y 256 257config PPC_ADV_DEBUG_REGS 258 bool 259 depends on 40x || BOOKE 260 default y 261 262config PPC_ADV_DEBUG_IACS 263 int 264 depends on PPC_ADV_DEBUG_REGS 265 default 4 if 44x 266 default 2 267 268config PPC_ADV_DEBUG_DACS 269 int 270 depends on PPC_ADV_DEBUG_REGS 271 default 2 272 273config PPC_ADV_DEBUG_DVCS 274 int 275 depends on PPC_ADV_DEBUG_REGS 276 default 2 if 44x 277 default 0 278 279config PPC_ADV_DEBUG_DAC_RANGE 280 bool 281 depends on PPC_ADV_DEBUG_REGS && 44x 282 default y 283 284config PPC_EMULATE_SSTEP 285 bool 286 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT 287 288source "init/Kconfig" 289 290source "kernel/Kconfig.freezer" 291 292source "arch/powerpc/sysdev/Kconfig" 293source "arch/powerpc/platforms/Kconfig" 294 295menu "Kernel options" 296 297config HIGHMEM 298 bool "High memory support" 299 depends on PPC32 300 301source kernel/Kconfig.hz 302source kernel/Kconfig.preempt 303source "fs/Kconfig.binfmt" 304 305config HUGETLB_PAGE_SIZE_VARIABLE 306 bool 307 depends on HUGETLB_PAGE 308 default y 309 310config MATH_EMULATION 311 bool "Math emulation" 312 depends on 4xx || 8xx || PPC_MPC832x || BOOKE 313 ---help--- 314 Some PowerPC chips designed for embedded applications do not have 315 a floating-point unit and therefore do not implement the 316 floating-point instructions in the PowerPC instruction set. If you 317 say Y here, the kernel will include code to emulate a floating-point 318 unit, which will allow programs that use floating-point 319 instructions to run. 320 321 This is also useful to emulate missing (optional) instructions 322 such as fsqrt on cores that do have an FPU but do not implement 323 them (such as Freescale BookE). 324 325choice 326 prompt "Math emulation options" 327 default MATH_EMULATION_FULL 328 depends on MATH_EMULATION 329 330config MATH_EMULATION_FULL 331 bool "Emulate all the floating point instructions" 332 ---help--- 333 Select this option will enable the kernel to support to emulate 334 all the floating point instructions. If your SoC doesn't have 335 a FPU, you should select this. 336 337config MATH_EMULATION_HW_UNIMPLEMENTED 338 bool "Just emulate the FPU unimplemented instructions" 339 ---help--- 340 Select this if you know there does have a hardware FPU on your 341 SoC, but some floating point instructions are not implemented by that. 342 343endchoice 344 345config PPC_TRANSACTIONAL_MEM 346 bool "Transactional Memory support for POWERPC" 347 depends on PPC_BOOK3S_64 348 depends on SMP 349 select ALTIVEC 350 select VSX 351 default n 352 ---help--- 353 Support user-mode Transactional Memory on POWERPC. 354 355config IOMMU_HELPER 356 def_bool PPC64 357 358config SWIOTLB 359 bool "SWIOTLB support" 360 default n 361 select IOMMU_HELPER 362 ---help--- 363 Support for IO bounce buffering for systems without an IOMMU. 364 This allows us to DMA to the full physical address space on 365 platforms where the size of a physical address is larger 366 than the bus address. Not all platforms support this. 367 368config HOTPLUG_CPU 369 bool "Support for enabling/disabling CPUs" 370 depends on SMP && (PPC_PSERIES || \ 371 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) 372 ---help--- 373 Say Y here to be able to disable and re-enable individual 374 CPUs at runtime on SMP machines. 375 376 Say N if you are unsure. 377 378config ARCH_CPU_PROBE_RELEASE 379 def_bool y 380 depends on HOTPLUG_CPU 381 382config ARCH_ENABLE_MEMORY_HOTPLUG 383 def_bool y 384 385config ARCH_HAS_WALK_MEMORY 386 def_bool y 387 388config ARCH_ENABLE_MEMORY_HOTREMOVE 389 def_bool y 390 391config PPC64_SUPPORTS_MEMORY_FAILURE 392 bool "Add support for memory hwpoison" 393 depends on PPC_BOOK3S_64 394 default "y" if PPC_POWERNV 395 select ARCH_SUPPORTS_MEMORY_FAILURE 396 397config KEXEC 398 bool "kexec system call" 399 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) 400 help 401 kexec is a system call that implements the ability to shutdown your 402 current kernel, and to start another kernel. It is like a reboot 403 but it is independent of the system firmware. And like a reboot 404 you can start any kernel with it, not just Linux. 405 406 The name comes from the similarity to the exec system call. 407 408 It is an ongoing process to be certain the hardware in a machine 409 is properly shutdown, so do not be surprised if this code does not 410 initially work for you. As of this writing the exact hardware 411 interface is strongly in flux, so no good recommendation can be 412 made. 413 414config CRASH_DUMP 415 bool "Build a kdump crash kernel" 416 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) 417 select RELOCATABLE if PPC64 || 44x || FSL_BOOKE 418 help 419 Build a kernel suitable for use as a kdump capture kernel. 420 The same kernel binary can be used as production kernel and dump 421 capture kernel. 422 423config FA_DUMP 424 bool "Firmware-assisted dump" 425 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC 426 help 427 A robust mechanism to get reliable kernel crash dump with 428 assistance from firmware. This approach does not use kexec, 429 instead firmware assists in booting the kdump kernel 430 while preserving memory contents. Firmware-assisted dump 431 is meant to be a kdump replacement offering robustness and 432 speed not possible without system firmware assistance. 433 434 If unsure, say "N" 435 436config IRQ_ALL_CPUS 437 bool "Distribute interrupts on all CPUs by default" 438 depends on SMP 439 help 440 This option gives the kernel permission to distribute IRQs across 441 multiple CPUs. Saying N here will route all IRQs to the first 442 CPU. Generally saying Y is safe, although some problems have been 443 reported with SMP Power Macintoshes with this option enabled. 444 445config NUMA 446 bool "NUMA support" 447 depends on PPC64 448 default y if SMP && PPC_PSERIES 449 450config NODES_SHIFT 451 int 452 default "8" if PPC64 453 default "4" 454 depends on NEED_MULTIPLE_NODES 455 456config ARCH_SELECT_MEMORY_MODEL 457 def_bool y 458 depends on PPC64 459 460config ARCH_FLATMEM_ENABLE 461 def_bool y 462 depends on (PPC64 && !NUMA) || PPC32 463 464config ARCH_SPARSEMEM_ENABLE 465 def_bool y 466 depends on PPC64 467 select SPARSEMEM_VMEMMAP_ENABLE 468 469config ARCH_SPARSEMEM_DEFAULT 470 def_bool y 471 depends on (SMP && PPC_PSERIES) || PPC_PS3 472 473config SYS_SUPPORTS_HUGETLBFS 474 bool 475 476source "mm/Kconfig" 477 478config ARCH_MEMORY_PROBE 479 def_bool y 480 depends on MEMORY_HOTPLUG 481 482# Some NUMA nodes have memory ranges that span 483# other nodes. Even though a pfn is valid and 484# between a node's start and end pfns, it may not 485# reside on that node. See memmap_init_zone() 486# for details. 487config NODES_SPAN_OTHER_NODES 488 def_bool y 489 depends on NEED_MULTIPLE_NODES 490 491config PPC_HAS_HASH_64K 492 bool 493 depends on PPC64 494 default n 495 496config STDBINUTILS 497 bool "Using standard binutils settings" 498 depends on 44x 499 default y 500 help 501 Turning this option off allows you to select 256KB PAGE_SIZE on 44x. 502 Note, that kernel will be able to run only those applications, 503 which had been compiled using binutils later than 2.17.50.0.3 with 504 '-zmax-page-size' set to 256K (the default is 64K). Or, if using 505 the older binutils, you can patch them with a trivial patch, which 506 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. 507 508choice 509 prompt "Page size" 510 default PPC_4K_PAGES 511 help 512 Select the kernel logical page size. Increasing the page size 513 will reduce software overhead at each page boundary, allow 514 hardware prefetch mechanisms to be more effective, and allow 515 larger dma transfers increasing IO efficiency and reducing 516 overhead. However the utilization of memory will increase. 517 For example, each cached file will using a multiple of the 518 page size to hold its contents and the difference between the 519 end of file and the end of page is wasted. 520 521 Some dedicated systems, such as software raid serving with 522 accelerated calculations, have shown significant increases. 523 524 If you configure a 64 bit kernel for 64k pages but the 525 processor does not support them, then the kernel will simulate 526 them with 4k pages, loading them on demand, but with the 527 reduced software overhead and larger internal fragmentation. 528 For the 32 bit kernel, a large page option will not be offered 529 unless it is supported by the configured processor. 530 531 If unsure, choose 4K_PAGES. 532 533config PPC_4K_PAGES 534 bool "4k page size" 535 536config PPC_16K_PAGES 537 bool "16k page size" if 44x 538 539config PPC_64K_PAGES 540 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 541 depends on !PPC_FSL_BOOK3E 542 select PPC_HAS_HASH_64K if PPC_STD_MMU_64 543 544config PPC_256K_PAGES 545 bool "256k page size" if 44x 546 depends on !STDBINUTILS 547 help 548 Make the page size 256k. 549 550 As the ELF standard only requires alignment to support page 551 sizes up to 64k, you will need to compile all of your user 552 space applications with a non-standard binutils settings 553 (see the STDBINUTILS description for details). 554 555 Say N unless you know what you are doing. 556 557endchoice 558 559config FORCE_MAX_ZONEORDER 560 int "Maximum zone order" 561 range 9 64 if PPC64 && PPC_64K_PAGES 562 default "9" if PPC64 && PPC_64K_PAGES 563 range 13 64 if PPC64 && !PPC_64K_PAGES 564 default "13" if PPC64 && !PPC_64K_PAGES 565 range 9 64 if PPC32 && PPC_16K_PAGES 566 default "9" if PPC32 && PPC_16K_PAGES 567 range 7 64 if PPC32 && PPC_64K_PAGES 568 default "7" if PPC32 && PPC_64K_PAGES 569 range 5 64 if PPC32 && PPC_256K_PAGES 570 default "5" if PPC32 && PPC_256K_PAGES 571 range 11 64 572 default "11" 573 help 574 The kernel memory allocator divides physically contiguous memory 575 blocks into "zones", where each zone is a power of two number of 576 pages. This option selects the largest power of two that the kernel 577 keeps in the memory allocator. If you need to allocate very large 578 blocks of physically contiguous memory, then you may need to 579 increase this value. 580 581 This config option is actually maximum order plus one. For example, 582 a value of 11 means that the largest free memory block is 2^10 pages. 583 584 The page size is not necessarily 4KB. For example, on 64-bit 585 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 586 this in mind when choosing a value for this option. 587 588config PPC_SUBPAGE_PROT 589 bool "Support setting protections for 4k subpages" 590 depends on PPC_STD_MMU_64 && PPC_64K_PAGES 591 help 592 This option adds support for a system call to allow user programs 593 to set access permissions (read/write, readonly, or no access) 594 on the 4k subpages of each 64k page. 595 596config SCHED_SMT 597 bool "SMT (Hyperthreading) scheduler support" 598 depends on PPC64 && SMP 599 help 600 SMT scheduler support improves the CPU scheduler's decision making 601 when dealing with POWER5 cpus at a cost of slightly increased 602 overhead in some places. If unsure say N here. 603 604config PPC_DENORMALISATION 605 bool "PowerPC denormalisation exception handling" 606 depends on PPC_BOOK3S_64 607 default "y" if PPC_POWERNV 608 ---help--- 609 Add support for handling denormalisation of single precision 610 values. Useful for bare metal only. If unsure say Y here. 611 612config CMDLINE_BOOL 613 bool "Default bootloader kernel arguments" 614 615config CMDLINE 616 string "Initial kernel command string" 617 depends on CMDLINE_BOOL 618 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 619 help 620 On some platforms, there is currently no way for the boot loader to 621 pass arguments to the kernel. For these platforms, you can supply 622 some command-line options at build time by entering them here. In 623 most cases you will need to specify the root device here. 624 625config CMDLINE_FORCE 626 bool "Always use the default kernel command string" 627 depends on CMDLINE_BOOL 628 help 629 Always use the default kernel command string, even if the boot 630 loader passes other arguments to the kernel. 631 This is useful if you cannot or don't want to change the 632 command-line options your boot loader passes to the kernel. 633 634config EXTRA_TARGETS 635 string "Additional default image types" 636 help 637 List additional targets to be built by the bootwrapper here (separated 638 by spaces). This is useful for targets that depend of device tree 639 files in the .dts directory. 640 641 Targets in this list will be build as part of the default build 642 target, or when the user does a 'make zImage' or a 643 'make zImage.initrd'. 644 645 If unsure, leave blank 646 647config ARCH_WANTS_FREEZER_CONTROL 648 def_bool y 649 depends on ADB_PMU 650 651source kernel/power/Kconfig 652 653config SECCOMP 654 bool "Enable seccomp to safely compute untrusted bytecode" 655 depends on PROC_FS 656 default y 657 help 658 This kernel feature is useful for number crunching applications 659 that may need to compute untrusted bytecode during their 660 execution. By using pipes or other transports made available to 661 the process as file descriptors supporting the read/write 662 syscalls, it's possible to isolate those applications in 663 their own address space using seccomp. Once seccomp is 664 enabled via /proc/<pid>/seccomp, it cannot be disabled 665 and the task is only allowed to execute a few safe syscalls 666 defined by each seccomp mode. 667 668 If unsure, say Y. Only embedded should say N here. 669 670endmenu 671 672config ISA_DMA_API 673 bool 674 default PCI 675 676menu "Bus options" 677 678config ISA 679 bool "Support for ISA-bus hardware" 680 depends on PPC_CHRP 681 select PPC_I8259 682 help 683 Find out whether you have ISA slots on your motherboard. ISA is the 684 name of a bus system, i.e. the way the CPU talks to the other stuff 685 inside your box. If you have an Apple machine, say N here; if you 686 have an IBM RS/6000 or pSeries machine, say Y. If you have an 687 embedded board, consult your board documentation. 688 689config ZONE_DMA 690 bool 691 default y 692 693config NEED_DMA_MAP_STATE 694 def_bool (PPC64 || NOT_COHERENT_CACHE) 695 696config NEED_SG_DMA_LENGTH 697 def_bool y 698 699config GENERIC_ISA_DMA 700 bool 701 depends on ISA_DMA_API 702 default y 703 704config PPC_INDIRECT_PCI 705 bool 706 depends on PCI 707 default y if 40x || 44x 708 default n 709 710config EISA 711 bool 712 713config SBUS 714 bool 715 716config FSL_SOC 717 bool 718 719config FSL_PCI 720 bool 721 select PPC_INDIRECT_PCI 722 select PCI_QUIRKS 723 724config FSL_PMC 725 bool 726 default y 727 depends on SUSPEND && (PPC_85xx || PPC_86xx) 728 help 729 Freescale MPC85xx/MPC86xx power management controller support 730 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c 731 732config PPC4xx_CPM 733 bool 734 default y 735 depends on SUSPEND && (44x || 40x) 736 help 737 PPC4xx Clock Power Management (CPM) support (suspend/resume). 738 It also enables support for two different idle states (idle-wait 739 and idle-doze). 740 741config 4xx_SOC 742 bool 743 744config FSL_LBC 745 bool "Freescale Local Bus support" 746 depends on FSL_SOC 747 help 748 Enables reporting of errors from the Freescale local bus 749 controller. Also contains some common code used by 750 drivers for specific local bus peripherals. 751 752config FSL_GTM 753 bool 754 depends on PPC_83xx || QUICC_ENGINE || CPM2 755 help 756 Freescale General-purpose Timers support 757 758# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 759config MCA 760 bool 761 762# Platforms that what PCI turned unconditionally just do select PCI 763# in their config node. Platforms that want to choose at config 764# time should select PPC_PCI_CHOICE 765config PPC_PCI_CHOICE 766 bool 767 768config PCI 769 bool "PCI support" if PPC_PCI_CHOICE 770 default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 771 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON 772 default PCI_QSPAN if !4xx && !CPM2 && 8xx 773 select GENERIC_PCI_IOMAP 774 help 775 Find out whether your system includes a PCI bus. PCI is the name of 776 a bus system, i.e. the way the CPU talks to the other stuff inside 777 your box. If you say Y here, the kernel will include drivers and 778 infrastructure code to support PCI bus devices. 779 780config PCI_DOMAINS 781 def_bool PCI 782 783config PCI_SYSCALL 784 def_bool PCI 785 786config PCI_QSPAN 787 bool "QSpan PCI" 788 depends on !4xx && !CPM2 && 8xx 789 select PPC_I8259 790 help 791 Say Y here if you have a system based on a Motorola 8xx-series 792 embedded processor with a QSPAN PCI interface, otherwise say N. 793 794config PCI_8260 795 bool 796 depends on PCI && 8260 797 select PPC_INDIRECT_PCI 798 default y 799 800source "drivers/pci/pcie/Kconfig" 801 802source "drivers/pci/Kconfig" 803 804source "drivers/pcmcia/Kconfig" 805 806source "drivers/pci/hotplug/Kconfig" 807 808config HAS_RAPIDIO 809 bool 810 default n 811 812config RAPIDIO 813 tristate "RapidIO support" 814 depends on HAS_RAPIDIO || PCI 815 help 816 If you say Y here, the kernel will include drivers and 817 infrastructure code to support RapidIO interconnect devices. 818 819config FSL_RIO 820 bool "Freescale Embedded SRIO Controller support" 821 depends on RAPIDIO = y && HAS_RAPIDIO 822 default "n" 823 ---help--- 824 Include support for RapidIO controller on Freescale embedded 825 processors (MPC8548, MPC8641, etc). 826 827source "drivers/rapidio/Kconfig" 828 829endmenu 830 831config NONSTATIC_KERNEL 832 bool 833 default n 834 835menu "Advanced setup" 836 depends on PPC32 837 838config ADVANCED_OPTIONS 839 bool "Prompt for advanced kernel configuration options" 840 help 841 This option will enable prompting for a variety of advanced kernel 842 configuration options. These options can cause the kernel to not 843 work if they are set incorrectly, but can be used to optimize certain 844 aspects of kernel memory management. 845 846 Unless you know what you are doing, say N here. 847 848comment "Default settings for advanced configuration options are used" 849 depends on !ADVANCED_OPTIONS 850 851config LOWMEM_SIZE_BOOL 852 bool "Set maximum low memory" 853 depends on ADVANCED_OPTIONS 854 help 855 This option allows you to set the maximum amount of memory which 856 will be used as "low memory", that is, memory which the kernel can 857 access directly, without having to set up a kernel virtual mapping. 858 This can be useful in optimizing the layout of kernel virtual 859 memory. 860 861 Say N here unless you know what you are doing. 862 863config LOWMEM_SIZE 864 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 865 default "0x30000000" 866 867config LOWMEM_CAM_NUM_BOOL 868 bool "Set number of CAMs to use to map low memory" 869 depends on ADVANCED_OPTIONS && FSL_BOOKE 870 help 871 This option allows you to set the maximum number of CAM slots that 872 will be used to map low memory. There are a limited number of slots 873 available and even more limited number that will fit in the L1 MMU. 874 However, using more entries will allow mapping more low memory. This 875 can be useful in optimizing the layout of kernel virtual memory. 876 877 Say N here unless you know what you are doing. 878 879config LOWMEM_CAM_NUM 880 depends on FSL_BOOKE 881 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL 882 default 3 883 884config DYNAMIC_MEMSTART 885 bool "Enable page aligned dynamic load address for kernel" 886 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) 887 select NONSTATIC_KERNEL 888 help 889 This option enables the kernel to be loaded at any page aligned 890 physical address. The kernel creates a mapping from KERNELBASE to 891 the address where the kernel is loaded. The page size here implies 892 the TLB page size of the mapping for kernel on the particular platform. 893 Please refer to the init code for finding the TLB page size. 894 895 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE 896 kernel image, where the only restriction is the page aligned kernel 897 load address. When this option is enabled, the compile time physical 898 address CONFIG_PHYSICAL_START is ignored. 899 900 This option is overridden by CONFIG_RELOCATABLE 901 902config RELOCATABLE 903 bool "Build a relocatable kernel" 904 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) 905 select NONSTATIC_KERNEL 906 help 907 This builds a kernel image that is capable of running at the 908 location the kernel is loaded at, without any alignment restrictions. 909 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. 910 911 One use is for the kexec on panic case where the recovery kernel 912 must live at a different physical address than the primary 913 kernel. 914 915 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 916 it has been loaded at and the compile time physical addresses 917 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 918 setting can still be useful to bootwrappers that need to know the 919 load address of the kernel (eg. u-boot/mkimage). 920 921config RELOCATABLE_PPC32 922 def_bool y 923 depends on PPC32 && RELOCATABLE 924 925config PAGE_OFFSET_BOOL 926 bool "Set custom page offset address" 927 depends on ADVANCED_OPTIONS 928 help 929 This option allows you to set the kernel virtual address at which 930 the kernel will map low memory. This can be useful in optimizing 931 the virtual memory layout of the system. 932 933 Say N here unless you know what you are doing. 934 935config PAGE_OFFSET 936 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 937 default "0xc0000000" 938 939config KERNEL_START_BOOL 940 bool "Set custom kernel base address" 941 depends on ADVANCED_OPTIONS 942 help 943 This option allows you to set the kernel virtual address at which 944 the kernel will be loaded. Normally this should match PAGE_OFFSET 945 however there are times (like kdump) that one might not want them 946 to be the same. 947 948 Say N here unless you know what you are doing. 949 950config KERNEL_START 951 hex "Virtual address of kernel base" if KERNEL_START_BOOL 952 default PAGE_OFFSET if PAGE_OFFSET_BOOL 953 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL 954 default "0xc0000000" 955 956config PHYSICAL_START_BOOL 957 bool "Set physical address where the kernel is loaded" 958 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 959 help 960 This gives the physical address where the kernel is loaded. 961 962 Say N here unless you know what you are doing. 963 964config PHYSICAL_START 965 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 966 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL 967 default "0x00000000" 968 969config PHYSICAL_ALIGN 970 hex 971 default "0x04000000" if FSL_BOOKE 972 help 973 This value puts the alignment restrictions on physical address 974 where kernel is loaded and run from. Kernel is compiled for an 975 address which meets above alignment restriction. 976 977config TASK_SIZE_BOOL 978 bool "Set custom user task size" 979 depends on ADVANCED_OPTIONS 980 help 981 This option allows you to set the amount of virtual address space 982 allocated to user tasks. This can be useful in optimizing the 983 virtual memory layout of the system. 984 985 Say N here unless you know what you are doing. 986 987config TASK_SIZE 988 hex "Size of user task space" if TASK_SIZE_BOOL 989 default "0x80000000" if PPC_8xx 990 default "0xc0000000" 991 992config CONSISTENT_SIZE_BOOL 993 bool "Set custom consistent memory pool size" 994 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 995 help 996 This option allows you to set the size of the 997 consistent memory pool. This pool of virtual memory 998 is used to make consistent memory allocations. 999 1000config CONSISTENT_SIZE 1001 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 1002 default "0x00200000" if NOT_COHERENT_CACHE 1003 1004config PIN_TLB 1005 bool "Pinned Kernel TLBs (860 ONLY)" 1006 depends on ADVANCED_OPTIONS && 8xx 1007endmenu 1008 1009if PPC64 1010config RELOCATABLE 1011 bool "Build a relocatable kernel" 1012 select NONSTATIC_KERNEL 1013 help 1014 This builds a kernel image that is capable of running anywhere 1015 in the RMA (real memory area) at any 16k-aligned base address. 1016 The kernel is linked as a position-independent executable (PIE) 1017 and contains dynamic relocations which are processed early 1018 in the bootup process. 1019 1020 One use is for the kexec on panic case where the recovery kernel 1021 must live at a different physical address than the primary 1022 kernel. 1023 1024# This value must have zeroes in the bottom 60 bits otherwise lots will break 1025config PAGE_OFFSET 1026 hex 1027 default "0xc000000000000000" 1028config KERNEL_START 1029 hex 1030 default "0xc000000000000000" 1031config PHYSICAL_START 1032 hex 1033 default "0x00000000" 1034endif 1035 1036config ARCH_RANDOM 1037 def_bool n 1038 1039source "net/Kconfig" 1040 1041source "drivers/Kconfig" 1042 1043source "fs/Kconfig" 1044 1045source "arch/powerpc/sysdev/qe_lib/Kconfig" 1046 1047source "lib/Kconfig" 1048 1049source "arch/powerpc/Kconfig.debug" 1050 1051source "security/Kconfig" 1052 1053config KEYS_COMPAT 1054 bool 1055 depends on COMPAT && KEYS 1056 default y 1057 1058source "crypto/Kconfig" 1059 1060config PPC_LIB_RHEAP 1061 bool 1062 1063source "arch/powerpc/kvm/Kconfig" 1064