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 USE_PERCPU_NUMA_NODE_ID 457 def_bool y 458 depends on NUMA 459 460config HAVE_MEMORYLESS_NODES 461 def_bool y 462 depends on NUMA 463 464config ARCH_SELECT_MEMORY_MODEL 465 def_bool y 466 depends on PPC64 467 468config ARCH_FLATMEM_ENABLE 469 def_bool y 470 depends on (PPC64 && !NUMA) || PPC32 471 472config ARCH_SPARSEMEM_ENABLE 473 def_bool y 474 depends on PPC64 475 select SPARSEMEM_VMEMMAP_ENABLE 476 477config ARCH_SPARSEMEM_DEFAULT 478 def_bool y 479 depends on (SMP && PPC_PSERIES) || PPC_PS3 480 481config SYS_SUPPORTS_HUGETLBFS 482 bool 483 484source "mm/Kconfig" 485 486config ARCH_MEMORY_PROBE 487 def_bool y 488 depends on MEMORY_HOTPLUG 489 490# Some NUMA nodes have memory ranges that span 491# other nodes. Even though a pfn is valid and 492# between a node's start and end pfns, it may not 493# reside on that node. See memmap_init_zone() 494# for details. 495config NODES_SPAN_OTHER_NODES 496 def_bool y 497 depends on NEED_MULTIPLE_NODES 498 499config PPC_HAS_HASH_64K 500 bool 501 depends on PPC64 502 default n 503 504config STDBINUTILS 505 bool "Using standard binutils settings" 506 depends on 44x 507 default y 508 help 509 Turning this option off allows you to select 256KB PAGE_SIZE on 44x. 510 Note, that kernel will be able to run only those applications, 511 which had been compiled using binutils later than 2.17.50.0.3 with 512 '-zmax-page-size' set to 256K (the default is 64K). Or, if using 513 the older binutils, you can patch them with a trivial patch, which 514 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. 515 516choice 517 prompt "Page size" 518 default PPC_4K_PAGES 519 help 520 Select the kernel logical page size. Increasing the page size 521 will reduce software overhead at each page boundary, allow 522 hardware prefetch mechanisms to be more effective, and allow 523 larger dma transfers increasing IO efficiency and reducing 524 overhead. However the utilization of memory will increase. 525 For example, each cached file will using a multiple of the 526 page size to hold its contents and the difference between the 527 end of file and the end of page is wasted. 528 529 Some dedicated systems, such as software raid serving with 530 accelerated calculations, have shown significant increases. 531 532 If you configure a 64 bit kernel for 64k pages but the 533 processor does not support them, then the kernel will simulate 534 them with 4k pages, loading them on demand, but with the 535 reduced software overhead and larger internal fragmentation. 536 For the 32 bit kernel, a large page option will not be offered 537 unless it is supported by the configured processor. 538 539 If unsure, choose 4K_PAGES. 540 541config PPC_4K_PAGES 542 bool "4k page size" 543 544config PPC_16K_PAGES 545 bool "16k page size" if 44x 546 547config PPC_64K_PAGES 548 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 549 depends on !PPC_FSL_BOOK3E 550 select PPC_HAS_HASH_64K if PPC_STD_MMU_64 551 552config PPC_256K_PAGES 553 bool "256k page size" if 44x 554 depends on !STDBINUTILS 555 help 556 Make the page size 256k. 557 558 As the ELF standard only requires alignment to support page 559 sizes up to 64k, you will need to compile all of your user 560 space applications with a non-standard binutils settings 561 (see the STDBINUTILS description for details). 562 563 Say N unless you know what you are doing. 564 565endchoice 566 567config FORCE_MAX_ZONEORDER 568 int "Maximum zone order" 569 range 9 64 if PPC64 && PPC_64K_PAGES 570 default "9" if PPC64 && PPC_64K_PAGES 571 range 13 64 if PPC64 && !PPC_64K_PAGES 572 default "13" if PPC64 && !PPC_64K_PAGES 573 range 9 64 if PPC32 && PPC_16K_PAGES 574 default "9" if PPC32 && PPC_16K_PAGES 575 range 7 64 if PPC32 && PPC_64K_PAGES 576 default "7" if PPC32 && PPC_64K_PAGES 577 range 5 64 if PPC32 && PPC_256K_PAGES 578 default "5" if PPC32 && PPC_256K_PAGES 579 range 11 64 580 default "11" 581 help 582 The kernel memory allocator divides physically contiguous memory 583 blocks into "zones", where each zone is a power of two number of 584 pages. This option selects the largest power of two that the kernel 585 keeps in the memory allocator. If you need to allocate very large 586 blocks of physically contiguous memory, then you may need to 587 increase this value. 588 589 This config option is actually maximum order plus one. For example, 590 a value of 11 means that the largest free memory block is 2^10 pages. 591 592 The page size is not necessarily 4KB. For example, on 64-bit 593 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 594 this in mind when choosing a value for this option. 595 596config PPC_SUBPAGE_PROT 597 bool "Support setting protections for 4k subpages" 598 depends on PPC_STD_MMU_64 && PPC_64K_PAGES 599 help 600 This option adds support for a system call to allow user programs 601 to set access permissions (read/write, readonly, or no access) 602 on the 4k subpages of each 64k page. 603 604config SCHED_SMT 605 bool "SMT (Hyperthreading) scheduler support" 606 depends on PPC64 && SMP 607 help 608 SMT scheduler support improves the CPU scheduler's decision making 609 when dealing with POWER5 cpus at a cost of slightly increased 610 overhead in some places. If unsure say N here. 611 612config PPC_DENORMALISATION 613 bool "PowerPC denormalisation exception handling" 614 depends on PPC_BOOK3S_64 615 default "y" if PPC_POWERNV 616 ---help--- 617 Add support for handling denormalisation of single precision 618 values. Useful for bare metal only. If unsure say Y here. 619 620config CMDLINE_BOOL 621 bool "Default bootloader kernel arguments" 622 623config CMDLINE 624 string "Initial kernel command string" 625 depends on CMDLINE_BOOL 626 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 627 help 628 On some platforms, there is currently no way for the boot loader to 629 pass arguments to the kernel. For these platforms, you can supply 630 some command-line options at build time by entering them here. In 631 most cases you will need to specify the root device here. 632 633config CMDLINE_FORCE 634 bool "Always use the default kernel command string" 635 depends on CMDLINE_BOOL 636 help 637 Always use the default kernel command string, even if the boot 638 loader passes other arguments to the kernel. 639 This is useful if you cannot or don't want to change the 640 command-line options your boot loader passes to the kernel. 641 642config EXTRA_TARGETS 643 string "Additional default image types" 644 help 645 List additional targets to be built by the bootwrapper here (separated 646 by spaces). This is useful for targets that depend of device tree 647 files in the .dts directory. 648 649 Targets in this list will be build as part of the default build 650 target, or when the user does a 'make zImage' or a 651 'make zImage.initrd'. 652 653 If unsure, leave blank 654 655config ARCH_WANTS_FREEZER_CONTROL 656 def_bool y 657 depends on ADB_PMU 658 659source kernel/power/Kconfig 660 661config SECCOMP 662 bool "Enable seccomp to safely compute untrusted bytecode" 663 depends on PROC_FS 664 default y 665 help 666 This kernel feature is useful for number crunching applications 667 that may need to compute untrusted bytecode during their 668 execution. By using pipes or other transports made available to 669 the process as file descriptors supporting the read/write 670 syscalls, it's possible to isolate those applications in 671 their own address space using seccomp. Once seccomp is 672 enabled via /proc/<pid>/seccomp, it cannot be disabled 673 and the task is only allowed to execute a few safe syscalls 674 defined by each seccomp mode. 675 676 If unsure, say Y. Only embedded should say N here. 677 678endmenu 679 680config ISA_DMA_API 681 bool 682 default PCI 683 684menu "Bus options" 685 686config ISA 687 bool "Support for ISA-bus hardware" 688 depends on PPC_CHRP 689 select PPC_I8259 690 help 691 Find out whether you have ISA slots on your motherboard. ISA is the 692 name of a bus system, i.e. the way the CPU talks to the other stuff 693 inside your box. If you have an Apple machine, say N here; if you 694 have an IBM RS/6000 or pSeries machine, say Y. If you have an 695 embedded board, consult your board documentation. 696 697config ZONE_DMA 698 bool 699 default y 700 701config NEED_DMA_MAP_STATE 702 def_bool (PPC64 || NOT_COHERENT_CACHE) 703 704config NEED_SG_DMA_LENGTH 705 def_bool y 706 707config GENERIC_ISA_DMA 708 bool 709 depends on ISA_DMA_API 710 default y 711 712config PPC_INDIRECT_PCI 713 bool 714 depends on PCI 715 default y if 40x || 44x 716 default n 717 718config EISA 719 bool 720 721config SBUS 722 bool 723 724config FSL_SOC 725 bool 726 727config FSL_PCI 728 bool 729 select PPC_INDIRECT_PCI 730 select PCI_QUIRKS 731 732config FSL_PMC 733 bool 734 default y 735 depends on SUSPEND && (PPC_85xx || PPC_86xx) 736 help 737 Freescale MPC85xx/MPC86xx power management controller support 738 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c 739 740config PPC4xx_CPM 741 bool 742 default y 743 depends on SUSPEND && (44x || 40x) 744 help 745 PPC4xx Clock Power Management (CPM) support (suspend/resume). 746 It also enables support for two different idle states (idle-wait 747 and idle-doze). 748 749config 4xx_SOC 750 bool 751 752config FSL_LBC 753 bool "Freescale Local Bus support" 754 depends on FSL_SOC 755 help 756 Enables reporting of errors from the Freescale local bus 757 controller. Also contains some common code used by 758 drivers for specific local bus peripherals. 759 760config FSL_GTM 761 bool 762 depends on PPC_83xx || QUICC_ENGINE || CPM2 763 help 764 Freescale General-purpose Timers support 765 766# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 767config MCA 768 bool 769 770# Platforms that what PCI turned unconditionally just do select PCI 771# in their config node. Platforms that want to choose at config 772# time should select PPC_PCI_CHOICE 773config PPC_PCI_CHOICE 774 bool 775 776config PCI 777 bool "PCI support" if PPC_PCI_CHOICE 778 default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 779 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON 780 default PCI_QSPAN if !4xx && !CPM2 && 8xx 781 select GENERIC_PCI_IOMAP 782 help 783 Find out whether your system includes a PCI bus. PCI is the name of 784 a bus system, i.e. the way the CPU talks to the other stuff inside 785 your box. If you say Y here, the kernel will include drivers and 786 infrastructure code to support PCI bus devices. 787 788config PCI_DOMAINS 789 def_bool PCI 790 791config PCI_SYSCALL 792 def_bool PCI 793 794config PCI_QSPAN 795 bool "QSpan PCI" 796 depends on !4xx && !CPM2 && 8xx 797 select PPC_I8259 798 help 799 Say Y here if you have a system based on a Motorola 8xx-series 800 embedded processor with a QSPAN PCI interface, otherwise say N. 801 802config PCI_8260 803 bool 804 depends on PCI && 8260 805 select PPC_INDIRECT_PCI 806 default y 807 808source "drivers/pci/pcie/Kconfig" 809 810source "drivers/pci/Kconfig" 811 812source "drivers/pcmcia/Kconfig" 813 814source "drivers/pci/hotplug/Kconfig" 815 816config HAS_RAPIDIO 817 bool 818 default n 819 820config RAPIDIO 821 tristate "RapidIO support" 822 depends on HAS_RAPIDIO || PCI 823 help 824 If you say Y here, the kernel will include drivers and 825 infrastructure code to support RapidIO interconnect devices. 826 827config FSL_RIO 828 bool "Freescale Embedded SRIO Controller support" 829 depends on RAPIDIO = y && HAS_RAPIDIO 830 default "n" 831 ---help--- 832 Include support for RapidIO controller on Freescale embedded 833 processors (MPC8548, MPC8641, etc). 834 835source "drivers/rapidio/Kconfig" 836 837endmenu 838 839config NONSTATIC_KERNEL 840 bool 841 default n 842 843menu "Advanced setup" 844 depends on PPC32 845 846config ADVANCED_OPTIONS 847 bool "Prompt for advanced kernel configuration options" 848 help 849 This option will enable prompting for a variety of advanced kernel 850 configuration options. These options can cause the kernel to not 851 work if they are set incorrectly, but can be used to optimize certain 852 aspects of kernel memory management. 853 854 Unless you know what you are doing, say N here. 855 856comment "Default settings for advanced configuration options are used" 857 depends on !ADVANCED_OPTIONS 858 859config LOWMEM_SIZE_BOOL 860 bool "Set maximum low memory" 861 depends on ADVANCED_OPTIONS 862 help 863 This option allows you to set the maximum amount of memory which 864 will be used as "low memory", that is, memory which the kernel can 865 access directly, without having to set up a kernel virtual mapping. 866 This can be useful in optimizing the layout of kernel virtual 867 memory. 868 869 Say N here unless you know what you are doing. 870 871config LOWMEM_SIZE 872 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 873 default "0x30000000" 874 875config LOWMEM_CAM_NUM_BOOL 876 bool "Set number of CAMs to use to map low memory" 877 depends on ADVANCED_OPTIONS && FSL_BOOKE 878 help 879 This option allows you to set the maximum number of CAM slots that 880 will be used to map low memory. There are a limited number of slots 881 available and even more limited number that will fit in the L1 MMU. 882 However, using more entries will allow mapping more low memory. This 883 can be useful in optimizing the layout of kernel virtual memory. 884 885 Say N here unless you know what you are doing. 886 887config LOWMEM_CAM_NUM 888 depends on FSL_BOOKE 889 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL 890 default 3 891 892config DYNAMIC_MEMSTART 893 bool "Enable page aligned dynamic load address for kernel" 894 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) 895 select NONSTATIC_KERNEL 896 help 897 This option enables the kernel to be loaded at any page aligned 898 physical address. The kernel creates a mapping from KERNELBASE to 899 the address where the kernel is loaded. The page size here implies 900 the TLB page size of the mapping for kernel on the particular platform. 901 Please refer to the init code for finding the TLB page size. 902 903 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE 904 kernel image, where the only restriction is the page aligned kernel 905 load address. When this option is enabled, the compile time physical 906 address CONFIG_PHYSICAL_START is ignored. 907 908 This option is overridden by CONFIG_RELOCATABLE 909 910config RELOCATABLE 911 bool "Build a relocatable kernel" 912 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) 913 select NONSTATIC_KERNEL 914 help 915 This builds a kernel image that is capable of running at the 916 location the kernel is loaded at, without any alignment restrictions. 917 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. 918 919 One use is for the kexec on panic case where the recovery kernel 920 must live at a different physical address than the primary 921 kernel. 922 923 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 924 it has been loaded at and the compile time physical addresses 925 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 926 setting can still be useful to bootwrappers that need to know the 927 load address of the kernel (eg. u-boot/mkimage). 928 929config RELOCATABLE_PPC32 930 def_bool y 931 depends on PPC32 && RELOCATABLE 932 933config PAGE_OFFSET_BOOL 934 bool "Set custom page offset address" 935 depends on ADVANCED_OPTIONS 936 help 937 This option allows you to set the kernel virtual address at which 938 the kernel will map low memory. This can be useful in optimizing 939 the virtual memory layout of the system. 940 941 Say N here unless you know what you are doing. 942 943config PAGE_OFFSET 944 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 945 default "0xc0000000" 946 947config KERNEL_START_BOOL 948 bool "Set custom kernel base address" 949 depends on ADVANCED_OPTIONS 950 help 951 This option allows you to set the kernel virtual address at which 952 the kernel will be loaded. Normally this should match PAGE_OFFSET 953 however there are times (like kdump) that one might not want them 954 to be the same. 955 956 Say N here unless you know what you are doing. 957 958config KERNEL_START 959 hex "Virtual address of kernel base" if KERNEL_START_BOOL 960 default PAGE_OFFSET if PAGE_OFFSET_BOOL 961 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL 962 default "0xc0000000" 963 964config PHYSICAL_START_BOOL 965 bool "Set physical address where the kernel is loaded" 966 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 967 help 968 This gives the physical address where the kernel is loaded. 969 970 Say N here unless you know what you are doing. 971 972config PHYSICAL_START 973 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 974 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL 975 default "0x00000000" 976 977config PHYSICAL_ALIGN 978 hex 979 default "0x04000000" if FSL_BOOKE 980 help 981 This value puts the alignment restrictions on physical address 982 where kernel is loaded and run from. Kernel is compiled for an 983 address which meets above alignment restriction. 984 985config TASK_SIZE_BOOL 986 bool "Set custom user task size" 987 depends on ADVANCED_OPTIONS 988 help 989 This option allows you to set the amount of virtual address space 990 allocated to user tasks. This can be useful in optimizing the 991 virtual memory layout of the system. 992 993 Say N here unless you know what you are doing. 994 995config TASK_SIZE 996 hex "Size of user task space" if TASK_SIZE_BOOL 997 default "0x80000000" if PPC_8xx 998 default "0xc0000000" 999 1000config CONSISTENT_SIZE_BOOL 1001 bool "Set custom consistent memory pool size" 1002 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 1003 help 1004 This option allows you to set the size of the 1005 consistent memory pool. This pool of virtual memory 1006 is used to make consistent memory allocations. 1007 1008config CONSISTENT_SIZE 1009 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 1010 default "0x00200000" if NOT_COHERENT_CACHE 1011 1012config PIN_TLB 1013 bool "Pinned Kernel TLBs (860 ONLY)" 1014 depends on ADVANCED_OPTIONS && 8xx 1015endmenu 1016 1017if PPC64 1018config RELOCATABLE 1019 bool "Build a relocatable kernel" 1020 select NONSTATIC_KERNEL 1021 help 1022 This builds a kernel image that is capable of running anywhere 1023 in the RMA (real memory area) at any 16k-aligned base address. 1024 The kernel is linked as a position-independent executable (PIE) 1025 and contains dynamic relocations which are processed early 1026 in the bootup process. 1027 1028 One use is for the kexec on panic case where the recovery kernel 1029 must live at a different physical address than the primary 1030 kernel. 1031 1032# This value must have zeroes in the bottom 60 bits otherwise lots will break 1033config PAGE_OFFSET 1034 hex 1035 default "0xc000000000000000" 1036config KERNEL_START 1037 hex 1038 default "0xc000000000000000" 1039config PHYSICAL_START 1040 hex 1041 default "0x00000000" 1042endif 1043 1044config ARCH_RANDOM 1045 def_bool n 1046 1047source "net/Kconfig" 1048 1049source "drivers/Kconfig" 1050 1051source "fs/Kconfig" 1052 1053source "arch/powerpc/sysdev/qe_lib/Kconfig" 1054 1055source "lib/Kconfig" 1056 1057source "arch/powerpc/Kconfig.debug" 1058 1059source "security/Kconfig" 1060 1061config KEYS_COMPAT 1062 bool 1063 depends on COMPAT && KEYS 1064 default y 1065 1066source "crypto/Kconfig" 1067 1068config PPC_LIB_RHEAP 1069 bool 1070 1071source "arch/powerpc/kvm/Kconfig" 1072