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 GENERIC_GPIO 86 bool 87 help 88 Generic GPIO API support 89 90config PPC 91 bool 92 default y 93 select BINFMT_ELF 94 select OF 95 select OF_EARLY_FLATTREE 96 select HAVE_FTRACE_MCOUNT_RECORD 97 select HAVE_DYNAMIC_FTRACE 98 select HAVE_FUNCTION_TRACER 99 select HAVE_FUNCTION_GRAPH_TRACER 100 select SYSCTL_EXCEPTION_TRACE 101 select ARCH_WANT_OPTIONAL_GPIOLIB 102 select VIRT_TO_BUS if !PPC64 103 select HAVE_IDE 104 select HAVE_IOREMAP_PROT 105 select HAVE_EFFICIENT_UNALIGNED_ACCESS 106 select HAVE_KPROBES 107 select HAVE_ARCH_KGDB 108 select HAVE_KRETPROBES 109 select HAVE_ARCH_TRACEHOOK 110 select HAVE_MEMBLOCK 111 select HAVE_MEMBLOCK_NODE_MAP 112 select HAVE_DMA_ATTRS 113 select HAVE_DMA_API_DEBUG 114 select USE_GENERIC_SMP_HELPERS if SMP 115 select HAVE_OPROFILE 116 select HAVE_DEBUG_KMEMLEAK 117 select HAVE_SYSCALL_WRAPPERS if PPC64 118 select GENERIC_ATOMIC64 if PPC32 119 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 120 select HAVE_PERF_EVENTS 121 select HAVE_REGS_AND_STACK_ACCESS_API 122 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 123 select HAVE_GENERIC_HARDIRQS 124 select ARCH_WANT_IPC_PARSE_VERSION 125 select SPARSE_IRQ 126 select IRQ_DOMAIN 127 select GENERIC_IRQ_SHOW 128 select GENERIC_IRQ_SHOW_LEVEL 129 select IRQ_FORCED_THREADING 130 select HAVE_RCU_TABLE_FREE if SMP 131 select HAVE_SYSCALL_TRACEPOINTS 132 select HAVE_BPF_JIT if PPC64 133 select HAVE_ARCH_JUMP_LABEL 134 select ARCH_HAVE_NMI_SAFE_CMPXCHG 135 select GENERIC_SMP_IDLE_THREAD 136 select GENERIC_CMOS_UPDATE 137 select GENERIC_TIME_VSYSCALL_OLD 138 select GENERIC_CLOCKEVENTS 139 select GENERIC_STRNCPY_FROM_USER 140 select GENERIC_STRNLEN_USER 141 select HAVE_MOD_ARCH_SPECIFIC 142 select MODULES_USE_ELF_RELA 143 select CLONE_BACKWARDS 144 select ARCH_USE_BUILTIN_BSWAP 145 select OLD_SIGSUSPEND 146 select OLD_SIGACTION if PPC32 147 148config EARLY_PRINTK 149 bool 150 default y 151 152config COMPAT 153 bool 154 default y if PPC64 155 select COMPAT_BINFMT_ELF 156 select ARCH_WANT_OLD_COMPAT_IPC 157 select COMPAT_OLD_SIGACTION 158 159config SYSVIPC_COMPAT 160 bool 161 depends on COMPAT && SYSVIPC 162 default y 163 164# All PPC32s use generic nvram driver through ppc_md 165config GENERIC_NVRAM 166 bool 167 default y if PPC32 168 169config SCHED_OMIT_FRAME_POINTER 170 bool 171 default y 172 173config ARCH_MAY_HAVE_PC_FDC 174 bool 175 default !PPC_PSERIES || PCI 176 177config PPC_OF 178 def_bool y 179 180config PPC_UDBG_16550 181 bool 182 default n 183 184config GENERIC_TBSYNC 185 bool 186 default y if PPC32 && SMP 187 default n 188 189config AUDIT_ARCH 190 bool 191 default y 192 193config GENERIC_BUG 194 bool 195 default y 196 depends on BUG 197 198config SYS_SUPPORTS_APM_EMULATION 199 default y if PMAC_APM_EMU 200 bool 201 202config EPAPR_BOOT 203 bool 204 help 205 Used to allow a board to specify it wants an ePAPR compliant wrapper. 206 default n 207 208config DEFAULT_UIMAGE 209 bool 210 help 211 Used to allow a board to specify it wants a uImage built by default 212 default n 213 214config REDBOOT 215 bool 216 217config ARCH_HIBERNATION_POSSIBLE 218 bool 219 default y 220 221config ARCH_SUSPEND_POSSIBLE 222 def_bool y 223 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ 224 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ 225 || 44x || 40x 226 227config PPC_DCR_NATIVE 228 bool 229 default n 230 231config PPC_DCR_MMIO 232 bool 233 default n 234 235config PPC_DCR 236 bool 237 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO 238 default y 239 240config PPC_OF_PLATFORM_PCI 241 bool 242 depends on PCI 243 depends on PPC64 # not supported on 32 bits yet 244 default n 245 246config ARCH_SUPPORTS_DEBUG_PAGEALLOC 247 def_bool y 248 249config ARCH_SUPPORTS_UPROBES 250 def_bool y 251 252config PPC_ADV_DEBUG_REGS 253 bool 254 depends on 40x || BOOKE 255 default y 256 257config PPC_ADV_DEBUG_IACS 258 int 259 depends on PPC_ADV_DEBUG_REGS 260 default 4 if 44x 261 default 2 262 263config PPC_ADV_DEBUG_DACS 264 int 265 depends on PPC_ADV_DEBUG_REGS 266 default 2 267 268config PPC_ADV_DEBUG_DVCS 269 int 270 depends on PPC_ADV_DEBUG_REGS 271 default 2 if 44x 272 default 0 273 274config PPC_ADV_DEBUG_DAC_RANGE 275 bool 276 depends on PPC_ADV_DEBUG_REGS && 44x 277 default y 278 279config PPC_EMULATE_SSTEP 280 bool 281 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT 282 283source "init/Kconfig" 284 285source "kernel/Kconfig.freezer" 286 287source "arch/powerpc/sysdev/Kconfig" 288source "arch/powerpc/platforms/Kconfig" 289 290menu "Kernel options" 291 292config HIGHMEM 293 bool "High memory support" 294 depends on PPC32 295 296source kernel/Kconfig.hz 297source kernel/Kconfig.preempt 298source "fs/Kconfig.binfmt" 299 300config HUGETLB_PAGE_SIZE_VARIABLE 301 bool 302 depends on HUGETLB_PAGE 303 default y 304 305config MATH_EMULATION 306 bool "Math emulation" 307 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 308 ---help--- 309 Some PowerPC chips designed for embedded applications do not have 310 a floating-point unit and therefore do not implement the 311 floating-point instructions in the PowerPC instruction set. If you 312 say Y here, the kernel will include code to emulate a floating-point 313 unit, which will allow programs that use floating-point 314 instructions to run. 315 316config PPC_TRANSACTIONAL_MEM 317 bool "Transactional Memory support for POWERPC" 318 depends on PPC_BOOK3S_64 319 depends on SMP 320 default n 321 ---help--- 322 Support user-mode Transactional Memory on POWERPC. 323 324config 8XX_MINIMAL_FPEMU 325 bool "Minimal math emulation for 8xx" 326 depends on 8xx && !MATH_EMULATION 327 help 328 Older arch/ppc kernels still emulated a few floating point 329 instructions such as load and store, even when full math 330 emulation is disabled. Say "Y" here if you want to preserve 331 this behavior. 332 333 It is recommended that you build a soft-float userspace instead. 334 335config IOMMU_HELPER 336 def_bool PPC64 337 338config SWIOTLB 339 bool "SWIOTLB support" 340 default n 341 select IOMMU_HELPER 342 ---help--- 343 Support for IO bounce buffering for systems without an IOMMU. 344 This allows us to DMA to the full physical address space on 345 platforms where the size of a physical address is larger 346 than the bus address. Not all platforms support this. 347 348config HOTPLUG_CPU 349 bool "Support for enabling/disabling CPUs" 350 depends on SMP && HOTPLUG && (PPC_PSERIES || \ 351 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) 352 ---help--- 353 Say Y here to be able to disable and re-enable individual 354 CPUs at runtime on SMP machines. 355 356 Say N if you are unsure. 357 358config ARCH_CPU_PROBE_RELEASE 359 def_bool y 360 depends on HOTPLUG_CPU 361 362config ARCH_ENABLE_MEMORY_HOTPLUG 363 def_bool y 364 365config ARCH_HAS_WALK_MEMORY 366 def_bool y 367 368config ARCH_ENABLE_MEMORY_HOTREMOVE 369 def_bool y 370 371config KEXEC 372 bool "kexec system call" 373 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) 374 help 375 kexec is a system call that implements the ability to shutdown your 376 current kernel, and to start another kernel. It is like a reboot 377 but it is independent of the system firmware. And like a reboot 378 you can start any kernel with it, not just Linux. 379 380 The name comes from the similarity to the exec system call. 381 382 It is an ongoing process to be certain the hardware in a machine 383 is properly shutdown, so do not be surprised if this code does not 384 initially work for you. It may help to enable device hotplugging 385 support. As of this writing the exact hardware interface is 386 strongly in flux, so no good recommendation can be made. 387 388config CRASH_DUMP 389 bool "Build a kdump crash kernel" 390 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) 391 select RELOCATABLE if PPC64 || 44x 392 select DYNAMIC_MEMSTART if FSL_BOOKE 393 help 394 Build a kernel suitable for use as a kdump capture kernel. 395 The same kernel binary can be used as production kernel and dump 396 capture kernel. 397 398config FA_DUMP 399 bool "Firmware-assisted dump" 400 depends on PPC64 && PPC_RTAS && CRASH_DUMP 401 help 402 A robust mechanism to get reliable kernel crash dump with 403 assistance from firmware. This approach does not use kexec, 404 instead firmware assists in booting the kdump kernel 405 while preserving memory contents. Firmware-assisted dump 406 is meant to be a kdump replacement offering robustness and 407 speed not possible without system firmware assistance. 408 409 If unsure, say "N" 410 411config IRQ_ALL_CPUS 412 bool "Distribute interrupts on all CPUs by default" 413 depends on SMP && !MV64360 414 help 415 This option gives the kernel permission to distribute IRQs across 416 multiple CPUs. Saying N here will route all IRQs to the first 417 CPU. Generally saying Y is safe, although some problems have been 418 reported with SMP Power Macintoshes with this option enabled. 419 420config NUMA 421 bool "NUMA support" 422 depends on PPC64 423 default y if SMP && PPC_PSERIES 424 425config NODES_SHIFT 426 int 427 default "8" if PPC64 428 default "4" 429 depends on NEED_MULTIPLE_NODES 430 431config MAX_ACTIVE_REGIONS 432 int 433 default "256" if PPC64 434 default "32" 435 436config ARCH_SELECT_MEMORY_MODEL 437 def_bool y 438 depends on PPC64 439 440config ARCH_FLATMEM_ENABLE 441 def_bool y 442 depends on (PPC64 && !NUMA) || PPC32 443 444config ARCH_SPARSEMEM_ENABLE 445 def_bool y 446 depends on PPC64 447 select SPARSEMEM_VMEMMAP_ENABLE 448 449config ARCH_SPARSEMEM_DEFAULT 450 def_bool y 451 depends on (SMP && PPC_PSERIES) || PPC_PS3 452 453config SYS_SUPPORTS_HUGETLBFS 454 bool 455 456source "mm/Kconfig" 457 458config ARCH_MEMORY_PROBE 459 def_bool y 460 depends on MEMORY_HOTPLUG 461 462# Some NUMA nodes have memory ranges that span 463# other nodes. Even though a pfn is valid and 464# between a node's start and end pfns, it may not 465# reside on that node. See memmap_init_zone() 466# for details. 467config NODES_SPAN_OTHER_NODES 468 def_bool y 469 depends on NEED_MULTIPLE_NODES 470 471config PPC_HAS_HASH_64K 472 bool 473 depends on PPC64 474 default n 475 476config STDBINUTILS 477 bool "Using standard binutils settings" 478 depends on 44x 479 default y 480 help 481 Turning this option off allows you to select 256KB PAGE_SIZE on 44x. 482 Note, that kernel will be able to run only those applications, 483 which had been compiled using binutils later than 2.17.50.0.3 with 484 '-zmax-page-size' set to 256K (the default is 64K). Or, if using 485 the older binutils, you can patch them with a trivial patch, which 486 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. 487 488choice 489 prompt "Page size" 490 default PPC_4K_PAGES 491 help 492 Select the kernel logical page size. Increasing the page size 493 will reduce software overhead at each page boundary, allow 494 hardware prefetch mechanisms to be more effective, and allow 495 larger dma transfers increasing IO efficiency and reducing 496 overhead. However the utilization of memory will increase. 497 For example, each cached file will using a multiple of the 498 page size to hold its contents and the difference between the 499 end of file and the end of page is wasted. 500 501 Some dedicated systems, such as software raid serving with 502 accelerated calculations, have shown significant increases. 503 504 If you configure a 64 bit kernel for 64k pages but the 505 processor does not support them, then the kernel will simulate 506 them with 4k pages, loading them on demand, but with the 507 reduced software overhead and larger internal fragmentation. 508 For the 32 bit kernel, a large page option will not be offered 509 unless it is supported by the configured processor. 510 511 If unsure, choose 4K_PAGES. 512 513config PPC_4K_PAGES 514 bool "4k page size" 515 516config PPC_16K_PAGES 517 bool "16k page size" if 44x 518 519config PPC_64K_PAGES 520 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 521 select PPC_HAS_HASH_64K if PPC_STD_MMU_64 522 523config PPC_256K_PAGES 524 bool "256k page size" if 44x 525 depends on !STDBINUTILS 526 help 527 Make the page size 256k. 528 529 As the ELF standard only requires alignment to support page 530 sizes up to 64k, you will need to compile all of your user 531 space applications with a non-standard binutils settings 532 (see the STDBINUTILS description for details). 533 534 Say N unless you know what you are doing. 535 536endchoice 537 538config FORCE_MAX_ZONEORDER 539 int "Maximum zone order" 540 range 9 64 if PPC64 && PPC_64K_PAGES 541 default "9" if PPC64 && PPC_64K_PAGES 542 range 13 64 if PPC64 && !PPC_64K_PAGES 543 default "13" if PPC64 && !PPC_64K_PAGES 544 range 9 64 if PPC32 && PPC_16K_PAGES 545 default "9" if PPC32 && PPC_16K_PAGES 546 range 7 64 if PPC32 && PPC_64K_PAGES 547 default "7" if PPC32 && PPC_64K_PAGES 548 range 5 64 if PPC32 && PPC_256K_PAGES 549 default "5" if PPC32 && PPC_256K_PAGES 550 range 11 64 551 default "11" 552 help 553 The kernel memory allocator divides physically contiguous memory 554 blocks into "zones", where each zone is a power of two number of 555 pages. This option selects the largest power of two that the kernel 556 keeps in the memory allocator. If you need to allocate very large 557 blocks of physically contiguous memory, then you may need to 558 increase this value. 559 560 This config option is actually maximum order plus one. For example, 561 a value of 11 means that the largest free memory block is 2^10 pages. 562 563 The page size is not necessarily 4KB. For example, on 64-bit 564 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 565 this in mind when choosing a value for this option. 566 567config PPC_SUBPAGE_PROT 568 bool "Support setting protections for 4k subpages" 569 depends on PPC_STD_MMU_64 && PPC_64K_PAGES 570 help 571 This option adds support for a system call to allow user programs 572 to set access permissions (read/write, readonly, or no access) 573 on the 4k subpages of each 64k page. 574 575config SCHED_SMT 576 bool "SMT (Hyperthreading) scheduler support" 577 depends on PPC64 && SMP 578 help 579 SMT scheduler support improves the CPU scheduler's decision making 580 when dealing with POWER5 cpus at a cost of slightly increased 581 overhead in some places. If unsure say N here. 582 583config PPC_DENORMALISATION 584 bool "PowerPC denormalisation exception handling" 585 depends on PPC_BOOK3S_64 586 default "n" 587 ---help--- 588 Add support for handling denormalisation of single precision 589 values. Useful for bare metal only. If unsure say Y here. 590 591config CMDLINE_BOOL 592 bool "Default bootloader kernel arguments" 593 594config CMDLINE 595 string "Initial kernel command string" 596 depends on CMDLINE_BOOL 597 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 598 help 599 On some platforms, there is currently no way for the boot loader to 600 pass arguments to the kernel. For these platforms, you can supply 601 some command-line options at build time by entering them here. In 602 most cases you will need to specify the root device here. 603 604config EXTRA_TARGETS 605 string "Additional default image types" 606 help 607 List additional targets to be built by the bootwrapper here (separated 608 by spaces). This is useful for targets that depend of device tree 609 files in the .dts directory. 610 611 Targets in this list will be build as part of the default build 612 target, or when the user does a 'make zImage' or a 613 'make zImage.initrd'. 614 615 If unsure, leave blank 616 617config ARCH_WANTS_FREEZER_CONTROL 618 def_bool y 619 depends on ADB_PMU 620 621source kernel/power/Kconfig 622 623config SECCOMP 624 bool "Enable seccomp to safely compute untrusted bytecode" 625 depends on PROC_FS 626 default y 627 help 628 This kernel feature is useful for number crunching applications 629 that may need to compute untrusted bytecode during their 630 execution. By using pipes or other transports made available to 631 the process as file descriptors supporting the read/write 632 syscalls, it's possible to isolate those applications in 633 their own address space using seccomp. Once seccomp is 634 enabled via /proc/<pid>/seccomp, it cannot be disabled 635 and the task is only allowed to execute a few safe syscalls 636 defined by each seccomp mode. 637 638 If unsure, say Y. Only embedded should say N here. 639 640endmenu 641 642config ISA_DMA_API 643 bool 644 default PCI 645 646menu "Bus options" 647 648config ISA 649 bool "Support for ISA-bus hardware" 650 depends on PPC_PREP || PPC_CHRP 651 select PPC_I8259 652 help 653 Find out whether you have ISA slots on your motherboard. ISA is the 654 name of a bus system, i.e. the way the CPU talks to the other stuff 655 inside your box. If you have an Apple machine, say N here; if you 656 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If 657 you have an embedded board, consult your board documentation. 658 659config ZONE_DMA 660 bool 661 default y 662 663config NEED_DMA_MAP_STATE 664 def_bool (PPC64 || NOT_COHERENT_CACHE) 665 666config NEED_SG_DMA_LENGTH 667 def_bool y 668 669config GENERIC_ISA_DMA 670 bool 671 depends on ISA_DMA_API 672 default y 673 674config PPC_INDIRECT_PCI 675 bool 676 depends on PCI 677 default y if 40x || 44x 678 default n 679 680config EISA 681 bool 682 683config SBUS 684 bool 685 686config FSL_SOC 687 bool 688 select HAVE_CAN_FLEXCAN if NET && CAN 689 select PPC_CLOCK 690 691config FSL_PCI 692 bool 693 select PPC_INDIRECT_PCI 694 select PCI_QUIRKS 695 696config FSL_PMC 697 bool 698 default y 699 depends on SUSPEND && (PPC_85xx || PPC_86xx) 700 help 701 Freescale MPC85xx/MPC86xx power management controller support 702 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c 703 704config PPC4xx_CPM 705 bool 706 default y 707 depends on SUSPEND && (44x || 40x) 708 help 709 PPC4xx Clock Power Management (CPM) support (suspend/resume). 710 It also enables support for two different idle states (idle-wait 711 and idle-doze). 712 713config 4xx_SOC 714 bool 715 716config FSL_LBC 717 bool "Freescale Local Bus support" 718 depends on FSL_SOC 719 help 720 Enables reporting of errors from the Freescale local bus 721 controller. Also contains some common code used by 722 drivers for specific local bus peripherals. 723 724config FSL_IFC 725 bool 726 depends on FSL_SOC 727 728config FSL_GTM 729 bool 730 depends on PPC_83xx || QUICC_ENGINE || CPM2 731 help 732 Freescale General-purpose Timers support 733 734# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 735config MCA 736 bool 737 738# Platforms that what PCI turned unconditionally just do select PCI 739# in their config node. Platforms that want to choose at config 740# time should select PPC_PCI_CHOICE 741config PPC_PCI_CHOICE 742 bool 743 744config PCI 745 bool "PCI support" if PPC_PCI_CHOICE 746 default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 747 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON 748 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx 749 default PCI_QSPAN if !4xx && !CPM2 && 8xx 750 select ARCH_SUPPORTS_MSI 751 select GENERIC_PCI_IOMAP 752 help 753 Find out whether your system includes a PCI bus. PCI is the name of 754 a bus system, i.e. the way the CPU talks to the other stuff inside 755 your box. If you say Y here, the kernel will include drivers and 756 infrastructure code to support PCI bus devices. 757 758config PCI_DOMAINS 759 def_bool PCI 760 761config PCI_SYSCALL 762 def_bool PCI 763 764config PCI_QSPAN 765 bool "QSpan PCI" 766 depends on !4xx && !CPM2 && 8xx 767 select PPC_I8259 768 help 769 Say Y here if you have a system based on a Motorola 8xx-series 770 embedded processor with a QSPAN PCI interface, otherwise say N. 771 772config PCI_8260 773 bool 774 depends on PCI && 8260 775 select PPC_INDIRECT_PCI 776 default y 777 778config 8260_PCI9 779 bool "Enable workaround for MPC826x erratum PCI 9" 780 depends on PCI_8260 && !8272 781 default y 782 783source "drivers/pci/pcie/Kconfig" 784 785source "drivers/pci/Kconfig" 786 787source "drivers/pcmcia/Kconfig" 788 789source "drivers/pci/hotplug/Kconfig" 790 791config HAS_RAPIDIO 792 bool 793 default n 794 795config RAPIDIO 796 bool "RapidIO support" 797 depends on HAS_RAPIDIO || PCI 798 help 799 If you say Y here, the kernel will include drivers and 800 infrastructure code to support RapidIO interconnect devices. 801 802config FSL_RIO 803 bool "Freescale Embedded SRIO Controller support" 804 depends on RAPIDIO && HAS_RAPIDIO 805 default "n" 806 ---help--- 807 Include support for RapidIO controller on Freescale embedded 808 processors (MPC8548, MPC8641, etc). 809 810source "drivers/rapidio/Kconfig" 811 812endmenu 813 814config NONSTATIC_KERNEL 815 bool 816 default n 817 818menu "Advanced setup" 819 depends on PPC32 820 821config ADVANCED_OPTIONS 822 bool "Prompt for advanced kernel configuration options" 823 help 824 This option will enable prompting for a variety of advanced kernel 825 configuration options. These options can cause the kernel to not 826 work if they are set incorrectly, but can be used to optimize certain 827 aspects of kernel memory management. 828 829 Unless you know what you are doing, say N here. 830 831comment "Default settings for advanced configuration options are used" 832 depends on !ADVANCED_OPTIONS 833 834config LOWMEM_SIZE_BOOL 835 bool "Set maximum low memory" 836 depends on ADVANCED_OPTIONS 837 help 838 This option allows you to set the maximum amount of memory which 839 will be used as "low memory", that is, memory which the kernel can 840 access directly, without having to set up a kernel virtual mapping. 841 This can be useful in optimizing the layout of kernel virtual 842 memory. 843 844 Say N here unless you know what you are doing. 845 846config LOWMEM_SIZE 847 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 848 default "0x30000000" 849 850config LOWMEM_CAM_NUM_BOOL 851 bool "Set number of CAMs to use to map low memory" 852 depends on ADVANCED_OPTIONS && FSL_BOOKE 853 help 854 This option allows you to set the maximum number of CAM slots that 855 will be used to map low memory. There are a limited number of slots 856 available and even more limited number that will fit in the L1 MMU. 857 However, using more entries will allow mapping more low memory. This 858 can be useful in optimizing the layout of kernel virtual memory. 859 860 Say N here unless you know what you are doing. 861 862config LOWMEM_CAM_NUM 863 depends on FSL_BOOKE 864 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL 865 default 3 866 867config DYNAMIC_MEMSTART 868 bool "Enable page aligned dynamic load address for kernel" 869 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) 870 select NONSTATIC_KERNEL 871 help 872 This option enables the kernel to be loaded at any page aligned 873 physical address. The kernel creates a mapping from KERNELBASE to 874 the address where the kernel is loaded. The page size here implies 875 the TLB page size of the mapping for kernel on the particular platform. 876 Please refer to the init code for finding the TLB page size. 877 878 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE 879 kernel image, where the only restriction is the page aligned kernel 880 load address. When this option is enabled, the compile time physical 881 address CONFIG_PHYSICAL_START is ignored. 882 883 This option is overridden by CONFIG_RELOCATABLE 884 885config RELOCATABLE 886 bool "Build a relocatable kernel" 887 depends on ADVANCED_OPTIONS && FLATMEM && 44x 888 select NONSTATIC_KERNEL 889 help 890 This builds a kernel image that is capable of running at the 891 location the kernel is loaded at, without any alignment restrictions. 892 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. 893 894 One use is for the kexec on panic case where the recovery kernel 895 must live at a different physical address than the primary 896 kernel. 897 898 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 899 it has been loaded at and the compile time physical addresses 900 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 901 setting can still be useful to bootwrappers that need to know the 902 load address of the kernel (eg. u-boot/mkimage). 903 904config RELOCATABLE_PPC32 905 def_bool y 906 depends on PPC32 && RELOCATABLE 907 908config PAGE_OFFSET_BOOL 909 bool "Set custom page offset address" 910 depends on ADVANCED_OPTIONS 911 help 912 This option allows you to set the kernel virtual address at which 913 the kernel will map low memory. This can be useful in optimizing 914 the virtual memory layout of the system. 915 916 Say N here unless you know what you are doing. 917 918config PAGE_OFFSET 919 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 920 default "0xc0000000" 921 922config KERNEL_START_BOOL 923 bool "Set custom kernel base address" 924 depends on ADVANCED_OPTIONS 925 help 926 This option allows you to set the kernel virtual address at which 927 the kernel will be loaded. Normally this should match PAGE_OFFSET 928 however there are times (like kdump) that one might not want them 929 to be the same. 930 931 Say N here unless you know what you are doing. 932 933config KERNEL_START 934 hex "Virtual address of kernel base" if KERNEL_START_BOOL 935 default PAGE_OFFSET if PAGE_OFFSET_BOOL 936 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL 937 default "0xc0000000" 938 939config PHYSICAL_START_BOOL 940 bool "Set physical address where the kernel is loaded" 941 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 942 help 943 This gives the physical address where the kernel is loaded. 944 945 Say N here unless you know what you are doing. 946 947config PHYSICAL_START 948 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 949 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL 950 default "0x00000000" 951 952config PHYSICAL_ALIGN 953 hex 954 default "0x04000000" if FSL_BOOKE 955 help 956 This value puts the alignment restrictions on physical address 957 where kernel is loaded and run from. Kernel is compiled for an 958 address which meets above alignment restriction. 959 960config TASK_SIZE_BOOL 961 bool "Set custom user task size" 962 depends on ADVANCED_OPTIONS 963 help 964 This option allows you to set the amount of virtual address space 965 allocated to user tasks. This can be useful in optimizing the 966 virtual memory layout of the system. 967 968 Say N here unless you know what you are doing. 969 970config TASK_SIZE 971 hex "Size of user task space" if TASK_SIZE_BOOL 972 default "0x80000000" if PPC_PREP || PPC_8xx 973 default "0xc0000000" 974 975config CONSISTENT_SIZE_BOOL 976 bool "Set custom consistent memory pool size" 977 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 978 help 979 This option allows you to set the size of the 980 consistent memory pool. This pool of virtual memory 981 is used to make consistent memory allocations. 982 983config CONSISTENT_SIZE 984 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 985 default "0x00200000" if NOT_COHERENT_CACHE 986 987config PIN_TLB 988 bool "Pinned Kernel TLBs (860 ONLY)" 989 depends on ADVANCED_OPTIONS && 8xx 990endmenu 991 992if PPC64 993config RELOCATABLE 994 bool "Build a relocatable kernel" 995 select NONSTATIC_KERNEL 996 help 997 This builds a kernel image that is capable of running anywhere 998 in the RMA (real memory area) at any 16k-aligned base address. 999 The kernel is linked as a position-independent executable (PIE) 1000 and contains dynamic relocations which are processed early
1001 in the bootup process. 1002 1003 One use is for the kexec on panic case where the recovery kernel 1004 must live at a different physical address than the primary 1005 kernel. 1006 1007config PAGE_OFFSET 1008 hex 1009 default "0xc000000000000000" 1010config KERNEL_START 1011 hex 1012 default "0xc000000000000000" 1013config PHYSICAL_START 1014 hex 1015 default "0x00000000" 1016endif 1017 1018source "net/Kconfig" 1019 1020source "drivers/Kconfig" 1021 1022source "fs/Kconfig" 1023 1024source "arch/powerpc/sysdev/qe_lib/Kconfig" 1025 1026source "lib/Kconfig" 1027 1028source "arch/powerpc/Kconfig.debug" 1029 1030source "security/Kconfig" 1031 1032config KEYS_COMPAT 1033 bool 1034 depends on COMPAT && KEYS 1035 default y 1036 1037source "crypto/Kconfig" 1038 1039config PPC_CLOCK 1040 bool 1041 default n 1042 select HAVE_CLK 1043 1044config PPC_LIB_RHEAP 1045 bool 1046 1047source "arch/powerpc/kvm/Kconfig" 1048