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 ARCH_HAS_DMA_SET_COHERENT_MASK 86 bool 87 88config PPC 89 bool 90 default y 91 select ARCH_MIGHT_HAVE_PC_PARPORT 92 select ARCH_MIGHT_HAVE_PC_SERIO 93 select BINFMT_ELF 94 select ARCH_HAS_ELF_RANDOMIZE 95 select OF 96 select OF_EARLY_FLATTREE 97 select OF_RESERVED_MEM 98 select HAVE_FTRACE_MCOUNT_RECORD 99 select HAVE_DYNAMIC_FTRACE 100 select HAVE_FUNCTION_TRACER 101 select HAVE_FUNCTION_GRAPH_TRACER 102 select SYSCTL_EXCEPTION_TRACE 103 select ARCH_WANT_OPTIONAL_GPIOLIB 104 select VIRT_TO_BUS if !PPC64 105 select HAVE_IDE 106 select HAVE_IOREMAP_PROT 107 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN 108 select HAVE_KPROBES 109 select HAVE_ARCH_KGDB 110 select HAVE_KRETPROBES 111 select HAVE_ARCH_TRACEHOOK 112 select HAVE_MEMBLOCK 113 select HAVE_MEMBLOCK_NODE_MAP 114 select HAVE_DMA_ATTRS 115 select HAVE_DMA_API_DEBUG 116 select HAVE_OPROFILE 117 select HAVE_DEBUG_KMEMLEAK 118 select ARCH_HAS_SG_CHAIN 119 select GENERIC_ATOMIC64 if PPC32 120 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 121 select HAVE_PERF_EVENTS 122 select HAVE_REGS_AND_STACK_ACCESS_API 123 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 124 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 133 select HAVE_ARCH_JUMP_LABEL 134 select ARCH_HAVE_NMI_SAFE_CMPXCHG 135 select ARCH_HAS_GCOV_PROFILE_ALL 136 select GENERIC_SMP_IDLE_THREAD 137 select GENERIC_CMOS_UPDATE 138 select GENERIC_TIME_VSYSCALL_OLD 139 select GENERIC_CLOCKEVENTS 140 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 141 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 142 select GENERIC_STRNCPY_FROM_USER 143 select GENERIC_STRNLEN_USER 144 select HAVE_MOD_ARCH_SPECIFIC 145 select MODULES_USE_ELF_RELA 146 select CLONE_BACKWARDS 147 select ARCH_USE_BUILTIN_BSWAP 148 select OLD_SIGSUSPEND 149 select OLD_SIGACTION if PPC32 150 select HAVE_DEBUG_STACKOVERFLOW 151 select HAVE_IRQ_EXIT_ON_IRQ_STACK 152 select ARCH_USE_CMPXCHG_LOCKREF if PPC64 153 select HAVE_ARCH_AUDITSYSCALL 154 select ARCH_SUPPORTS_ATOMIC_RMW 155 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN 156 select NO_BOOTMEM 157 select HAVE_GENERIC_RCU_GUP 158 select HAVE_PERF_EVENTS_NMI if PPC64 159 select EDAC_SUPPORT 160 select EDAC_ATOMIC_SCRUB 161 select ARCH_HAS_DMA_SET_COHERENT_MASK 162 select HAVE_ARCH_SECCOMP_FILTER 163 164config GENERIC_CSUM 165 def_bool CPU_LITTLE_ENDIAN 166 167config EARLY_PRINTK 168 bool 169 default y 170 171config PANIC_TIMEOUT 172 int 173 default 180 174 175config COMPAT 176 bool 177 default y if PPC64 178 select COMPAT_BINFMT_ELF 179 select ARCH_WANT_OLD_COMPAT_IPC 180 select COMPAT_OLD_SIGACTION 181 182config SYSVIPC_COMPAT 183 bool 184 depends on COMPAT && SYSVIPC 185 default y 186 187# All PPC32s use generic nvram driver through ppc_md 188config GENERIC_NVRAM 189 bool 190 default y if PPC32 191 192config SCHED_OMIT_FRAME_POINTER 193 bool 194 default y 195 196config ARCH_MAY_HAVE_PC_FDC 197 bool 198 default PCI 199 200config PPC_UDBG_16550 201 bool 202 default n 203 204config GENERIC_TBSYNC 205 bool 206 default y if PPC32 && SMP 207 default n 208 209config AUDIT_ARCH 210 bool 211 default y 212 213config GENERIC_BUG 214 bool 215 default y 216 depends on BUG 217 218config SYS_SUPPORTS_APM_EMULATION 219 default y if PMAC_APM_EMU 220 bool 221 222config EPAPR_BOOT 223 bool 224 help 225 Used to allow a board to specify it wants an ePAPR compliant wrapper. 226 default n 227 228config DEFAULT_UIMAGE 229 bool 230 help 231 Used to allow a board to specify it wants a uImage built by default 232 default n 233 234config ARCH_HIBERNATION_POSSIBLE 235 bool 236 default y 237 238config ARCH_SUSPEND_POSSIBLE 239 def_bool y 240 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ 241 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ 242 || 44x || 40x 243 244config PPC_DCR_NATIVE 245 bool 246 default n 247 248config PPC_DCR_MMIO 249 bool 250 default n 251 252config PPC_DCR 253 bool 254 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO 255 default y 256 257config PPC_OF_PLATFORM_PCI 258 bool 259 depends on PCI 260 depends on PPC64 # not supported on 32 bits yet 261 default n 262 263config ARCH_SUPPORTS_DEBUG_PAGEALLOC 264 depends on PPC32 || PPC_STD_MMU_64 265 def_bool y 266 267config ARCH_SUPPORTS_UPROBES 268 def_bool y 269 270config PPC_ADV_DEBUG_REGS 271 bool 272 depends on 40x || BOOKE 273 default y 274 275config PPC_ADV_DEBUG_IACS 276 int 277 depends on PPC_ADV_DEBUG_REGS 278 default 4 if 44x 279 default 2 280 281config PPC_ADV_DEBUG_DACS 282 int 283 depends on PPC_ADV_DEBUG_REGS 284 default 2 285 286config PPC_ADV_DEBUG_DVCS 287 int 288 depends on PPC_ADV_DEBUG_REGS 289 default 2 if 44x 290 default 0 291 292config PPC_ADV_DEBUG_DAC_RANGE 293 bool 294 depends on PPC_ADV_DEBUG_REGS && 44x 295 default y 296 297config PPC_EMULATE_SSTEP 298 bool 299 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT 300 301config ZONE_DMA32 302 bool 303 default y if PPC64 304 305config PGTABLE_LEVELS 306 int 307 default 2 if !PPC64 308 default 3 if PPC_64K_PAGES 309 default 4 310 311source "init/Kconfig" 312 313source "kernel/Kconfig.freezer" 314 315source "arch/powerpc/sysdev/Kconfig" 316source "arch/powerpc/platforms/Kconfig" 317 318menu "Kernel options" 319 320config HIGHMEM 321 bool "High memory support" 322 depends on PPC32 323 324source kernel/Kconfig.hz 325source kernel/Kconfig.preempt 326source "fs/Kconfig.binfmt" 327 328config HUGETLB_PAGE_SIZE_VARIABLE 329 bool 330 depends on HUGETLB_PAGE 331 default y 332 333config MATH_EMULATION 334 bool "Math emulation" 335 depends on 4xx || 8xx || PPC_MPC832x || BOOKE 336 ---help--- 337 Some PowerPC chips designed for embedded applications do not have 338 a floating-point unit and therefore do not implement the 339 floating-point instructions in the PowerPC instruction set. If you 340 say Y here, the kernel will include code to emulate a floating-point 341 unit, which will allow programs that use floating-point 342 instructions to run. 343 344 This is also useful to emulate missing (optional) instructions 345 such as fsqrt on cores that do have an FPU but do not implement 346 them (such as Freescale BookE). 347 348choice 349 prompt "Math emulation options" 350 default MATH_EMULATION_FULL 351 depends on MATH_EMULATION 352 353config MATH_EMULATION_FULL 354 bool "Emulate all the floating point instructions" 355 ---help--- 356 Select this option will enable the kernel to support to emulate 357 all the floating point instructions. If your SoC doesn't have 358 a FPU, you should select this. 359 360config MATH_EMULATION_HW_UNIMPLEMENTED 361 bool "Just emulate the FPU unimplemented instructions" 362 ---help--- 363 Select this if you know there does have a hardware FPU on your 364 SoC, but some floating point instructions are not implemented by that. 365 366endchoice 367 368config PPC_TRANSACTIONAL_MEM 369 bool "Transactional Memory support for POWERPC" 370 depends on PPC_BOOK3S_64 371 depends on SMP 372 select ALTIVEC 373 select VSX 374 default n 375 ---help--- 376 Support user-mode Transactional Memory on POWERPC. 377 378config IOMMU_HELPER 379 def_bool PPC64 380 381config SWIOTLB 382 bool "SWIOTLB support" 383 default n 384 select IOMMU_HELPER 385 ---help--- 386 Support for IO bounce buffering for systems without an IOMMU. 387 This allows us to DMA to the full physical address space on 388 platforms where the size of a physical address is larger 389 than the bus address. Not all platforms support this. 390 391config HOTPLUG_CPU 392 bool "Support for enabling/disabling CPUs" 393 depends on SMP && (PPC_PSERIES || \ 394 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) 395 ---help--- 396 Say Y here to be able to disable and re-enable individual 397 CPUs at runtime on SMP machines. 398 399 Say N if you are unsure. 400 401config ARCH_CPU_PROBE_RELEASE 402 def_bool y 403 depends on HOTPLUG_CPU 404 405config ARCH_ENABLE_MEMORY_HOTPLUG 406 def_bool y 407 408config ARCH_HAS_WALK_MEMORY 409 def_bool y 410 411config ARCH_ENABLE_MEMORY_HOTREMOVE 412 def_bool y 413 414config PPC64_SUPPORTS_MEMORY_FAILURE 415 bool "Add support for memory hwpoison" 416 depends on PPC_BOOK3S_64 417 default "y" if PPC_POWERNV 418 select ARCH_SUPPORTS_MEMORY_FAILURE 419 420config KEXEC 421 bool "kexec system call" 422 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E 423 select KEXEC_CORE 424 help 425 kexec is a system call that implements the ability to shutdown your 426 current kernel, and to start another kernel. It is like a reboot 427 but it is independent of the system firmware. And like a reboot 428 you can start any kernel with it, not just Linux. 429 430 The name comes from the similarity to the exec system call. 431 432 It is an ongoing process to be certain the hardware in a machine 433 is properly shutdown, so do not be surprised if this code does not 434 initially work for you. As of this writing the exact hardware 435 interface is strongly in flux, so no good recommendation can be 436 made. 437 438config CRASH_DUMP 439 bool "Build a kdump crash kernel" 440 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) 441 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE 442 help 443 Build a kernel suitable for use as a kdump capture kernel. 444 The same kernel binary can be used as production kernel and dump 445 capture kernel. 446 447config FA_DUMP 448 bool "Firmware-assisted dump" 449 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC 450 help 451 A robust mechanism to get reliable kernel crash dump with 452 assistance from firmware. This approach does not use kexec, 453 instead firmware assists in booting the kdump kernel 454 while preserving memory contents. Firmware-assisted dump 455 is meant to be a kdump replacement offering robustness and 456 speed not possible without system firmware assistance. 457 458 If unsure, say "N" 459 460config IRQ_ALL_CPUS 461 bool "Distribute interrupts on all CPUs by default" 462 depends on SMP 463 help 464 This option gives the kernel permission to distribute IRQs across 465 multiple CPUs. Saying N here will route all IRQs to the first 466 CPU. Generally saying Y is safe, although some problems have been 467 reported with SMP Power Macintoshes with this option enabled. 468 469config NUMA 470 bool "NUMA support" 471 depends on PPC64 472 default y if SMP && PPC_PSERIES 473 474config NODES_SHIFT 475 int 476 default "8" if PPC64 477 default "4" 478 depends on NEED_MULTIPLE_NODES 479 480config USE_PERCPU_NUMA_NODE_ID 481 def_bool y 482 depends on NUMA 483 484config HAVE_MEMORYLESS_NODES 485 def_bool y 486 depends on NUMA 487 488config ARCH_SELECT_MEMORY_MODEL 489 def_bool y 490 depends on PPC64 491 492config ARCH_FLATMEM_ENABLE 493 def_bool y 494 depends on (PPC64 && !NUMA) || PPC32 495 496config ARCH_SPARSEMEM_ENABLE 497 def_bool y 498 depends on PPC64 499 select SPARSEMEM_VMEMMAP_ENABLE 500 501config ARCH_SPARSEMEM_DEFAULT 502 def_bool y 503 depends on (SMP && PPC_PSERIES) || PPC_PS3 504 505config SYS_SUPPORTS_HUGETLBFS 506 bool 507 508source "mm/Kconfig" 509 510config ARCH_MEMORY_PROBE 511 def_bool y 512 depends on MEMORY_HOTPLUG 513 514# Some NUMA nodes have memory ranges that span 515# other nodes. Even though a pfn is valid and 516# between a node's start and end pfns, it may not 517# reside on that node. See memmap_init_zone() 518# for details. 519config NODES_SPAN_OTHER_NODES 520 def_bool y 521 depends on NEED_MULTIPLE_NODES 522 523config STDBINUTILS 524 bool "Using standard binutils settings" 525 depends on 44x 526 default y 527 help 528 Turning this option off allows you to select 256KB PAGE_SIZE on 44x. 529 Note, that kernel will be able to run only those applications, 530 which had been compiled using binutils later than 2.17.50.0.3 with 531 '-zmax-page-size' set to 256K (the default is 64K). Or, if using 532 the older binutils, you can patch them with a trivial patch, which 533 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. 534 535choice 536 prompt "Page size" 537 default PPC_4K_PAGES 538 help 539 Select the kernel logical page size. Increasing the page size 540 will reduce software overhead at each page boundary, allow 541 hardware prefetch mechanisms to be more effective, and allow 542 larger dma transfers increasing IO efficiency and reducing 543 overhead. However the utilization of memory will increase. 544 For example, each cached file will using a multiple of the 545 page size to hold its contents and the difference between the 546 end of file and the end of page is wasted. 547 548 Some dedicated systems, such as software raid serving with 549 accelerated calculations, have shown significant increases. 550 551 If you configure a 64 bit kernel for 64k pages but the 552 processor does not support them, then the kernel will simulate 553 them with 4k pages, loading them on demand, but with the 554 reduced software overhead and larger internal fragmentation. 555 For the 32 bit kernel, a large page option will not be offered 556 unless it is supported by the configured processor. 557 558 If unsure, choose 4K_PAGES. 559 560config PPC_4K_PAGES 561 bool "4k page size" 562 563config PPC_16K_PAGES 564 bool "16k page size" 565 depends on 44x || PPC_8xx 566 567config PPC_64K_PAGES 568 bool "64k page size" 569 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64) 570 571config PPC_256K_PAGES 572 bool "256k page size" 573 depends on 44x && !STDBINUTILS 574 help 575 Make the page size 256k. 576 577 As the ELF standard only requires alignment to support page 578 sizes up to 64k, you will need to compile all of your user 579 space applications with a non-standard binutils settings 580 (see the STDBINUTILS description for details). 581 582 Say N unless you know what you are doing. 583 584endchoice 585 586config FORCE_MAX_ZONEORDER 587 int "Maximum zone order" 588 range 9 64 if PPC64 && PPC_64K_PAGES 589 default "9" if PPC64 && PPC_64K_PAGES 590 range 13 64 if PPC64 && !PPC_64K_PAGES 591 default "13" if PPC64 && !PPC_64K_PAGES 592 range 9 64 if PPC32 && PPC_16K_PAGES 593 default "9" if PPC32 && PPC_16K_PAGES 594 range 7 64 if PPC32 && PPC_64K_PAGES 595 default "7" if PPC32 && PPC_64K_PAGES 596 range 5 64 if PPC32 && PPC_256K_PAGES 597 default "5" if PPC32 && PPC_256K_PAGES 598 range 11 64 599 default "11" 600 help 601 The kernel memory allocator divides physically contiguous memory 602 blocks into "zones", where each zone is a power of two number of 603 pages. This option selects the largest power of two that the kernel 604 keeps in the memory allocator. If you need to allocate very large 605 blocks of physically contiguous memory, then you may need to 606 increase this value. 607 608 This config option is actually maximum order plus one. For example, 609 a value of 11 means that the largest free memory block is 2^10 pages. 610 611 The page size is not necessarily 4KB. For example, on 64-bit 612 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 613 this in mind when choosing a value for this option. 614 615config PPC_SUBPAGE_PROT 616 bool "Support setting protections for 4k subpages" 617 depends on PPC_STD_MMU_64 && PPC_64K_PAGES 618 help 619 This option adds support for a system call to allow user programs 620 to set access permissions (read/write, readonly, or no access) 621 on the 4k subpages of each 64k page. 622 623config PPC_COPRO_BASE 624 bool 625 default n 626 627config SCHED_SMT 628 bool "SMT (Hyperthreading) scheduler support" 629 depends on PPC64 && SMP 630 help 631 SMT scheduler support improves the CPU scheduler's decision making 632 when dealing with POWER5 cpus at a cost of slightly increased 633 overhead in some places. If unsure say N here. 634 635config PPC_DENORMALISATION 636 bool "PowerPC denormalisation exception handling" 637 depends on PPC_BOOK3S_64 638 default "y" if PPC_POWERNV 639 ---help--- 640 Add support for handling denormalisation of single precision 641 values. Useful for bare metal only. If unsure say Y here. 642 643config CMDLINE_BOOL 644 bool "Default bootloader kernel arguments" 645 646config CMDLINE 647 string "Initial kernel command string" 648 depends on CMDLINE_BOOL 649 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 650 help 651 On some platforms, there is currently no way for the boot loader to 652 pass arguments to the kernel. For these platforms, you can supply 653 some command-line options at build time by entering them here. In 654 most cases you will need to specify the root device here. 655 656config CMDLINE_FORCE 657 bool "Always use the default kernel command string" 658 depends on CMDLINE_BOOL 659 help 660 Always use the default kernel command string, even if the boot 661 loader passes other arguments to the kernel. 662 This is useful if you cannot or don't want to change the 663 command-line options your boot loader passes to the kernel. 664 665config EXTRA_TARGETS 666 string "Additional default image types" 667 help 668 List additional targets to be built by the bootwrapper here (separated 669 by spaces). This is useful for targets that depend of device tree 670 files in the .dts directory. 671 672 Targets in this list will be build as part of the default build 673 target, or when the user does a 'make zImage' or a 674 'make zImage.initrd'. 675 676 If unsure, leave blank 677 678config ARCH_WANTS_FREEZER_CONTROL 679 def_bool y 680 depends on ADB_PMU 681 682source kernel/power/Kconfig 683 684config SECCOMP 685 bool "Enable seccomp to safely compute untrusted bytecode" 686 depends on PROC_FS 687 default y 688 help 689 This kernel feature is useful for number crunching applications 690 that may need to compute untrusted bytecode during their 691 execution. By using pipes or other transports made available to 692 the process as file descriptors supporting the read/write 693 syscalls, it's possible to isolate those applications in 694 their own address space using seccomp. Once seccomp is 695 enabled via /proc/<pid>/seccomp, it cannot be disabled 696 and the task is only allowed to execute a few safe syscalls 697 defined by each seccomp mode. 698 699 If unsure, say Y. Only embedded should say N here. 700 701endmenu 702 703config ISA_DMA_API 704 bool 705 default PCI 706 707menu "Bus options" 708 709config ISA 710 bool "Support for ISA-bus hardware" 711 depends on PPC_CHRP 712 select PPC_I8259 713 help 714 Find out whether you have ISA slots on your motherboard. ISA is the 715 name of a bus system, i.e. the way the CPU talks to the other stuff 716 inside your box. If you have an Apple machine, say N here; if you 717 have an IBM RS/6000 or pSeries machine, say Y. If you have an 718 embedded board, consult your board documentation. 719 720config ZONE_DMA 721 bool 722 default y 723 724config NEED_DMA_MAP_STATE 725 def_bool (PPC64 || NOT_COHERENT_CACHE) 726 727config NEED_SG_DMA_LENGTH 728 def_bool y 729 730config GENERIC_ISA_DMA 731 bool 732 depends on ISA_DMA_API 733 default y 734 735config PPC_INDIRECT_PCI 736 bool 737 depends on PCI 738 default y if 40x || 44x 739 default n 740 741config EISA 742 bool 743 744config SBUS 745 bool 746 747config FSL_SOC 748 bool 749 750config FSL_PCI 751 bool 752 select PPC_INDIRECT_PCI 753 select PCI_QUIRKS 754 755config FSL_PMC 756 bool 757 default y 758 depends on SUSPEND && (PPC_85xx || PPC_86xx) 759 help 760 Freescale MPC85xx/MPC86xx power management controller support 761 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c 762 763config PPC4xx_CPM 764 bool 765 default y 766 depends on SUSPEND && (44x || 40x) 767 help 768 PPC4xx Clock Power Management (CPM) support (suspend/resume). 769 It also enables support for two different idle states (idle-wait 770 and idle-doze). 771 772config 4xx_SOC 773 bool 774 775config FSL_LBC 776 bool "Freescale Local Bus support" 777 depends on FSL_SOC 778 help 779 Enables reporting of errors from the Freescale local bus 780 controller. Also contains some common code used by 781 drivers for specific local bus peripherals. 782 783config FSL_GTM 784 bool 785 depends on PPC_83xx || QUICC_ENGINE || CPM2 786 help 787 Freescale General-purpose Timers support 788 789# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 790config MCA 791 bool 792 793# Platforms that what PCI turned unconditionally just do select PCI 794# in their config node. Platforms that want to choose at config 795# time should select PPC_PCI_CHOICE 796config PPC_PCI_CHOICE 797 bool 798 799config PCI 800 bool "PCI support" if PPC_PCI_CHOICE 801 default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 802 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON 803 default PCI_QSPAN if !4xx && !CPM2 && 8xx 804 select GENERIC_PCI_IOMAP 805 help 806 Find out whether your system includes a PCI bus. PCI is the name of 807 a bus system, i.e. the way the CPU talks to the other stuff inside 808 your box. If you say Y here, the kernel will include drivers and 809 infrastructure code to support PCI bus devices. 810 811config PCI_DOMAINS 812 def_bool PCI 813 814config PCI_SYSCALL 815 def_bool PCI 816 817config PCI_QSPAN 818 bool "QSpan PCI" 819 depends on !4xx && !CPM2 && 8xx 820 select PPC_I8259 821 help 822 Say Y here if you have a system based on a Motorola 8xx-series 823 embedded processor with a QSPAN PCI interface, otherwise say N. 824 825config PCI_8260 826 bool 827 depends on PCI && 8260 828 select PPC_INDIRECT_PCI 829 default y 830 831source "drivers/pci/pcie/Kconfig" 832 833source "drivers/pci/Kconfig" 834 835source "drivers/pcmcia/Kconfig" 836 837source "drivers/pci/hotplug/Kconfig" 838 839config HAS_RAPIDIO 840 bool 841 default n 842 843config RAPIDIO 844 tristate "RapidIO support" 845 depends on HAS_RAPIDIO || PCI 846 help 847 If you say Y here, the kernel will include drivers and 848 infrastructure code to support RapidIO interconnect devices. 849 850config FSL_RIO 851 bool "Freescale Embedded SRIO Controller support" 852 depends on RAPIDIO = y && HAS_RAPIDIO 853 default "n" 854 ---help--- 855 Include support for RapidIO controller on Freescale embedded 856 processors (MPC8548, MPC8641, etc). 857 858source "drivers/rapidio/Kconfig" 859 860endmenu 861 862config NONSTATIC_KERNEL 863 bool 864 default n 865 866menu "Advanced setup" 867 depends on PPC32 868 869config ADVANCED_OPTIONS 870 bool "Prompt for advanced kernel configuration options" 871 help 872 This option will enable prompting for a variety of advanced kernel 873 configuration options. These options can cause the kernel to not 874 work if they are set incorrectly, but can be used to optimize certain 875 aspects of kernel memory management. 876 877 Unless you know what you are doing, say N here. 878 879comment "Default settings for advanced configuration options are used" 880 depends on !ADVANCED_OPTIONS 881 882config LOWMEM_SIZE_BOOL 883 bool "Set maximum low memory" 884 depends on ADVANCED_OPTIONS 885 help 886 This option allows you to set the maximum amount of memory which 887 will be used as "low memory", that is, memory which the kernel can 888 access directly, without having to set up a kernel virtual mapping. 889 This can be useful in optimizing the layout of kernel virtual 890 memory. 891 892 Say N here unless you know what you are doing. 893 894config LOWMEM_SIZE 895 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 896 default "0x30000000" 897 898config LOWMEM_CAM_NUM_BOOL 899 bool "Set number of CAMs to use to map low memory" 900 depends on ADVANCED_OPTIONS && FSL_BOOKE 901 help 902 This option allows you to set the maximum number of CAM slots that 903 will be used to map low memory. There are a limited number of slots 904 available and even more limited number that will fit in the L1 MMU. 905 However, using more entries will allow mapping more low memory. This 906 can be useful in optimizing the layout of kernel virtual memory. 907 908 Say N here unless you know what you are doing. 909 910config LOWMEM_CAM_NUM 911 depends on FSL_BOOKE 912 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL 913 default 3 914 915config DYNAMIC_MEMSTART 916 bool "Enable page aligned dynamic load address for kernel" 917 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) 918 select NONSTATIC_KERNEL 919 help 920 This option enables the kernel to be loaded at any page aligned 921 physical address. The kernel creates a mapping from KERNELBASE to 922 the address where the kernel is loaded. The page size here implies 923 the TLB page size of the mapping for kernel on the particular platform. 924 Please refer to the init code for finding the TLB page size. 925 926 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE 927 kernel image, where the only restriction is the page aligned kernel 928 load address. When this option is enabled, the compile time physical 929 address CONFIG_PHYSICAL_START is ignored. 930 931 This option is overridden by CONFIG_RELOCATABLE 932 933config RELOCATABLE 934 bool "Build a relocatable kernel" 935 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) 936 select NONSTATIC_KERNEL 937 help 938 This builds a kernel image that is capable of running at the 939 location the kernel is loaded at, without any alignment restrictions. 940 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. 941 942 One use is for the kexec on panic case where the recovery kernel 943 must live at a different physical address than the primary 944 kernel. 945 946 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 947 it has been loaded at and the compile time physical addresses 948 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 949 setting can still be useful to bootwrappers that need to know the 950 load address of the kernel (eg. u-boot/mkimage). 951 952config RELOCATABLE_PPC32 953 def_bool y 954 depends on PPC32 && RELOCATABLE 955 956config PAGE_OFFSET_BOOL 957 bool "Set custom page offset address" 958 depends on ADVANCED_OPTIONS 959 help 960 This option allows you to set the kernel virtual address at which 961 the kernel will map low memory. This can be useful in optimizing 962 the virtual memory layout of the system. 963 964 Say N here unless you know what you are doing. 965 966config PAGE_OFFSET 967 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 968 default "0xc0000000" 969 970config KERNEL_START_BOOL 971 bool "Set custom kernel base address" 972 depends on ADVANCED_OPTIONS 973 help 974 This option allows you to set the kernel virtual address at which 975 the kernel will be loaded. Normally this should match PAGE_OFFSET 976 however there are times (like kdump) that one might not want them 977 to be the same. 978 979 Say N here unless you know what you are doing. 980 981config KERNEL_START 982 hex "Virtual address of kernel base" if KERNEL_START_BOOL 983 default PAGE_OFFSET if PAGE_OFFSET_BOOL 984 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL 985 default "0xc0000000" 986 987config PHYSICAL_START_BOOL 988 bool "Set physical address where the kernel is loaded" 989 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 990 help 991 This gives the physical address where the kernel is loaded. 992 993 Say N here unless you know what you are doing. 994 995config PHYSICAL_START 996 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 997 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL 998 default "0x00000000" 999 1000config PHYSICAL_ALIGN 1001 hex 1002 default "0x04000000" if FSL_BOOKE 1003 help 1004 This value puts the alignment restrictions on physical address 1005 where kernel is loaded and run from. Kernel is compiled for an 1006 address which meets above alignment restriction. 1007 1008config TASK_SIZE_BOOL 1009 bool "Set custom user task size" 1010 depends on ADVANCED_OPTIONS 1011 help 1012 This option allows you to set the amount of virtual address space 1013 allocated to user tasks. This can be useful in optimizing the 1014 virtual memory layout of the system. 1015 1016 Say N here unless you know what you are doing. 1017 1018config TASK_SIZE 1019 hex "Size of user task space" if TASK_SIZE_BOOL 1020 default "0x80000000" if PPC_8xx 1021 default "0xc0000000" 1022 1023config CONSISTENT_SIZE_BOOL 1024 bool "Set custom consistent memory pool size" 1025 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 1026 help 1027 This option allows you to set the size of the 1028 consistent memory pool. This pool of virtual memory 1029 is used to make consistent memory allocations. 1030 1031config CONSISTENT_SIZE 1032 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 1033 default "0x00200000" if NOT_COHERENT_CACHE 1034 1035config PIN_TLB 1036 bool "Pinned Kernel TLBs (860 ONLY)" 1037 depends on ADVANCED_OPTIONS && 8xx 1038endmenu 1039 1040if PPC64 1041config RELOCATABLE 1042 bool "Build a relocatable kernel" 1043 depends on !COMPILE_TEST 1044 select NONSTATIC_KERNEL 1045 help 1046 This builds a kernel image that is capable of running anywhere 1047 in the RMA (real memory area) at any 16k-aligned base address. 1048 The kernel is linked as a position-independent executable (PIE) 1049 and contains dynamic relocations which are processed early 1050 in the bootup process. 1051 1052 One use is for the kexec on panic case where the recovery kernel 1053 must live at a different physical address than the primary 1054 kernel. 1055 1056# This value must have zeroes in the bottom 60 bits otherwise lots will break 1057config PAGE_OFFSET 1058 hex 1059 default "0xc000000000000000" 1060config KERNEL_START 1061 hex 1062 default "0xc000000000000000" 1063config PHYSICAL_START 1064 hex 1065 default "0x00000000" 1066endif 1067 1068config ARCH_RANDOM 1069 def_bool n 1070 1071source "net/Kconfig" 1072 1073source "drivers/Kconfig" 1074 1075source "fs/Kconfig" 1076 1077source "arch/powerpc/sysdev/qe_lib/Kconfig" 1078 1079source "lib/Kconfig" 1080 1081source "arch/powerpc/Kconfig.debug" 1082 1083source "security/Kconfig" 1084 1085config KEYS_COMPAT 1086 bool 1087 depends on COMPAT && KEYS 1088 default y 1089 1090source "crypto/Kconfig" 1091 1092config PPC_LIB_RHEAP 1093 bool 1094 1095source "arch/powerpc/kvm/Kconfig" 1096