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)) 423 help 424 kexec is a system call that implements the ability to shutdown your 425 current kernel, and to start another kernel. It is like a reboot 426 but it is independent of the system firmware. And like a reboot 427 you can start any kernel with it, not just Linux. 428 429 The name comes from the similarity to the exec system call. 430 431 It is an ongoing process to be certain the hardware in a machine 432 is properly shutdown, so do not be surprised if this code does not 433 initially work for you. As of this writing the exact hardware 434 interface is strongly in flux, so no good recommendation can be 435 made. 436 437config CRASH_DUMP 438 bool "Build a kdump crash kernel" 439 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) 440 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE 441 help 442 Build a kernel suitable for use as a kdump capture kernel. 443 The same kernel binary can be used as production kernel and dump 444 capture kernel. 445 446config FA_DUMP 447 bool "Firmware-assisted dump" 448 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC 449 help 450 A robust mechanism to get reliable kernel crash dump with 451 assistance from firmware. This approach does not use kexec, 452 instead firmware assists in booting the kdump kernel 453 while preserving memory contents. Firmware-assisted dump 454 is meant to be a kdump replacement offering robustness and 455 speed not possible without system firmware assistance. 456 457 If unsure, say "N" 458 459config IRQ_ALL_CPUS 460 bool "Distribute interrupts on all CPUs by default" 461 depends on SMP 462 help 463 This option gives the kernel permission to distribute IRQs across 464 multiple CPUs. Saying N here will route all IRQs to the first 465 CPU. Generally saying Y is safe, although some problems have been 466 reported with SMP Power Macintoshes with this option enabled. 467 468config NUMA 469 bool "NUMA support" 470 depends on PPC64 471 default y if SMP && PPC_PSERIES 472 473config NODES_SHIFT 474 int 475 default "8" if PPC64 476 default "4" 477 depends on NEED_MULTIPLE_NODES 478 479config USE_PERCPU_NUMA_NODE_ID 480 def_bool y 481 depends on NUMA 482 483config HAVE_MEMORYLESS_NODES 484 def_bool y 485 depends on NUMA 486 487config ARCH_SELECT_MEMORY_MODEL 488 def_bool y 489 depends on PPC64 490 491config ARCH_FLATMEM_ENABLE 492 def_bool y 493 depends on (PPC64 && !NUMA) || PPC32 494 495config ARCH_SPARSEMEM_ENABLE 496 def_bool y 497 depends on PPC64 498 select SPARSEMEM_VMEMMAP_ENABLE 499 500config ARCH_SPARSEMEM_DEFAULT 501 def_bool y 502 depends on (SMP && PPC_PSERIES) || PPC_PS3 503 504config SYS_SUPPORTS_HUGETLBFS 505 bool 506 507source "mm/Kconfig" 508 509config ARCH_MEMORY_PROBE 510 def_bool y 511 depends on MEMORY_HOTPLUG 512 513# Some NUMA nodes have memory ranges that span 514# other nodes. Even though a pfn is valid and 515# between a node's start and end pfns, it may not 516# reside on that node. See memmap_init_zone() 517# for details. 518config NODES_SPAN_OTHER_NODES 519 def_bool y 520 depends on NEED_MULTIPLE_NODES 521 522config STDBINUTILS 523 bool "Using standard binutils settings" 524 depends on 44x 525 default y 526 help 527 Turning this option off allows you to select 256KB PAGE_SIZE on 44x. 528 Note, that kernel will be able to run only those applications, 529 which had been compiled using binutils later than 2.17.50.0.3 with 530 '-zmax-page-size' set to 256K (the default is 64K). Or, if using 531 the older binutils, you can patch them with a trivial patch, which 532 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. 533 534choice 535 prompt "Page size" 536 default PPC_4K_PAGES 537 help 538 Select the kernel logical page size. Increasing the page size 539 will reduce software overhead at each page boundary, allow 540 hardware prefetch mechanisms to be more effective, and allow 541 larger dma transfers increasing IO efficiency and reducing 542 overhead. However the utilization of memory will increase. 543 For example, each cached file will using a multiple of the 544 page size to hold its contents and the difference between the 545 end of file and the end of page is wasted. 546 547 Some dedicated systems, such as software raid serving with 548 accelerated calculations, have shown significant increases. 549 550 If you configure a 64 bit kernel for 64k pages but the 551 processor does not support them, then the kernel will simulate 552 them with 4k pages, loading them on demand, but with the 553 reduced software overhead and larger internal fragmentation. 554 For the 32 bit kernel, a large page option will not be offered 555 unless it is supported by the configured processor. 556 557 If unsure, choose 4K_PAGES. 558 559config PPC_4K_PAGES 560 bool "4k page size" 561 562config PPC_16K_PAGES 563 bool "16k page size" 564 depends on 44x || PPC_8xx 565 566config PPC_64K_PAGES 567 bool "64k page size" 568 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64) 569 570config PPC_256K_PAGES 571 bool "256k page size" 572 depends on 44x && !STDBINUTILS 573 help 574 Make the page size 256k. 575 576 As the ELF standard only requires alignment to support page 577 sizes up to 64k, you will need to compile all of your user 578 space applications with a non-standard binutils settings 579 (see the STDBINUTILS description for details). 580 581 Say N unless you know what you are doing. 582 583endchoice 584 585config FORCE_MAX_ZONEORDER 586 int "Maximum zone order" 587 range 9 64 if PPC64 && PPC_64K_PAGES 588 default "9" if PPC64 && PPC_64K_PAGES 589 range 13 64 if PPC64 && !PPC_64K_PAGES 590 default "13" if PPC64 && !PPC_64K_PAGES 591 range 9 64 if PPC32 && PPC_16K_PAGES 592 default "9" if PPC32 && PPC_16K_PAGES 593 range 7 64 if PPC32 && PPC_64K_PAGES 594 default "7" if PPC32 && PPC_64K_PAGES 595 range 5 64 if PPC32 && PPC_256K_PAGES 596 default "5" if PPC32 && PPC_256K_PAGES 597 range 11 64 598 default "11" 599 help 600 The kernel memory allocator divides physically contiguous memory 601 blocks into "zones", where each zone is a power of two number of 602 pages. This option selects the largest power of two that the kernel 603 keeps in the memory allocator. If you need to allocate very large 604 blocks of physically contiguous memory, then you may need to 605 increase this value. 606 607 This config option is actually maximum order plus one. For example, 608 a value of 11 means that the largest free memory block is 2^10 pages. 609 610 The page size is not necessarily 4KB. For example, on 64-bit 611 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 612 this in mind when choosing a value for this option. 613 614config PPC_SUBPAGE_PROT 615 bool "Support setting protections for 4k subpages" 616 depends on PPC_STD_MMU_64 && PPC_64K_PAGES 617 help 618 This option adds support for a system call to allow user programs 619 to set access permissions (read/write, readonly, or no access) 620 on the 4k subpages of each 64k page. 621 622config PPC_COPRO_BASE 623 bool 624 default n 625 626config SCHED_SMT 627 bool "SMT (Hyperthreading) scheduler support" 628 depends on PPC64 && SMP 629 help 630 SMT scheduler support improves the CPU scheduler's decision making 631 when dealing with POWER5 cpus at a cost of slightly increased 632 overhead in some places. If unsure say N here. 633 634config PPC_DENORMALISATION 635 bool "PowerPC denormalisation exception handling" 636 depends on PPC_BOOK3S_64 637 default "y" if PPC_POWERNV 638 ---help--- 639 Add support for handling denormalisation of single precision 640 values. Useful for bare metal only. If unsure say Y here. 641 642config CMDLINE_BOOL 643 bool "Default bootloader kernel arguments" 644 645config CMDLINE 646 string "Initial kernel command string" 647 depends on CMDLINE_BOOL 648 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 649 help 650 On some platforms, there is currently no way for the boot loader to 651 pass arguments to the kernel. For these platforms, you can supply 652 some command-line options at build time by entering them here. In 653 most cases you will need to specify the root device here. 654 655config CMDLINE_FORCE 656 bool "Always use the default kernel command string" 657 depends on CMDLINE_BOOL 658 help 659 Always use the default kernel command string, even if the boot 660 loader passes other arguments to the kernel. 661 This is useful if you cannot or don't want to change the 662 command-line options your boot loader passes to the kernel. 663 664config EXTRA_TARGETS 665 string "Additional default image types" 666 help 667 List additional targets to be built by the bootwrapper here (separated 668 by spaces). This is useful for targets that depend of device tree 669 files in the .dts directory. 670 671 Targets in this list will be build as part of the default build 672 target, or when the user does a 'make zImage' or a 673 'make zImage.initrd'. 674 675 If unsure, leave blank 676 677config ARCH_WANTS_FREEZER_CONTROL 678 def_bool y 679 depends on ADB_PMU 680 681source kernel/power/Kconfig 682 683config SECCOMP 684 bool "Enable seccomp to safely compute untrusted bytecode" 685 depends on PROC_FS 686 default y 687 help 688 This kernel feature is useful for number crunching applications 689 that may need to compute untrusted bytecode during their 690 execution. By using pipes or other transports made available to 691 the process as file descriptors supporting the read/write 692 syscalls, it's possible to isolate those applications in 693 their own address space using seccomp. Once seccomp is 694 enabled via /proc/<pid>/seccomp, it cannot be disabled 695 and the task is only allowed to execute a few safe syscalls 696 defined by each seccomp mode. 697 698 If unsure, say Y. Only embedded should say N here. 699 700endmenu 701 702config ISA_DMA_API 703 bool 704 default PCI 705 706menu "Bus options" 707 708config ISA 709 bool "Support for ISA-bus hardware" 710 depends on PPC_CHRP 711 select PPC_I8259 712 help 713 Find out whether you have ISA slots on your motherboard. ISA is the 714 name of a bus system, i.e. the way the CPU talks to the other stuff 715 inside your box. If you have an Apple machine, say N here; if you 716 have an IBM RS/6000 or pSeries machine, say Y. If you have an 717 embedded board, consult your board documentation. 718 719config ZONE_DMA 720 bool 721 default y 722 723config NEED_DMA_MAP_STATE 724 def_bool (PPC64 || NOT_COHERENT_CACHE) 725 726config NEED_SG_DMA_LENGTH 727 def_bool y 728 729config GENERIC_ISA_DMA 730 bool 731 depends on ISA_DMA_API 732 default y 733 734config PPC_INDIRECT_PCI 735 bool 736 depends on PCI 737 default y if 40x || 44x 738 default n 739 740config EISA 741 bool 742 743config SBUS 744 bool 745 746config FSL_SOC 747 bool 748 749config FSL_PCI 750 bool 751 select PPC_INDIRECT_PCI 752 select PCI_QUIRKS 753 754config FSL_PMC 755 bool 756 default y 757 depends on SUSPEND && (PPC_85xx || PPC_86xx) 758 help 759 Freescale MPC85xx/MPC86xx power management controller support 760 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c 761 762config PPC4xx_CPM 763 bool 764 default y 765 depends on SUSPEND && (44x || 40x) 766 help 767 PPC4xx Clock Power Management (CPM) support (suspend/resume). 768 It also enables support for two different idle states (idle-wait 769 and idle-doze). 770 771config 4xx_SOC 772 bool 773 774config FSL_LBC 775 bool "Freescale Local Bus support" 776 depends on FSL_SOC 777 help 778 Enables reporting of errors from the Freescale local bus 779 controller. Also contains some common code used by 780 drivers for specific local bus peripherals. 781 782config FSL_GTM 783 bool 784 depends on PPC_83xx || QUICC_ENGINE || CPM2 785 help 786 Freescale General-purpose Timers support 787 788# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 789config MCA 790 bool 791 792# Platforms that what PCI turned unconditionally just do select PCI 793# in their config node. Platforms that want to choose at config 794# time should select PPC_PCI_CHOICE 795config PPC_PCI_CHOICE 796 bool 797 798config PCI 799 bool "PCI support" if PPC_PCI_CHOICE 800 default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 801 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON 802 default PCI_QSPAN if !4xx && !CPM2 && 8xx 803 select GENERIC_PCI_IOMAP 804 help 805 Find out whether your system includes a PCI bus. PCI is the name of 806 a bus system, i.e. the way the CPU talks to the other stuff inside 807 your box. If you say Y here, the kernel will include drivers and 808 infrastructure code to support PCI bus devices. 809 810config PCI_DOMAINS 811 def_bool PCI 812 813config PCI_SYSCALL 814 def_bool PCI 815 816config PCI_QSPAN 817 bool "QSpan PCI" 818 depends on !4xx && !CPM2 && 8xx 819 select PPC_I8259 820 help 821 Say Y here if you have a system based on a Motorola 8xx-series 822 embedded processor with a QSPAN PCI interface, otherwise say N. 823 824config PCI_8260 825 bool 826 depends on PCI && 8260 827 select PPC_INDIRECT_PCI 828 default y 829 830source "drivers/pci/pcie/Kconfig" 831 832source "drivers/pci/Kconfig" 833 834source "drivers/pcmcia/Kconfig" 835 836source "drivers/pci/hotplug/Kconfig" 837 838config HAS_RAPIDIO 839 bool 840 default n 841 842config RAPIDIO 843 tristate "RapidIO support" 844 depends on HAS_RAPIDIO || PCI 845 help 846 If you say Y here, the kernel will include drivers and 847 infrastructure code to support RapidIO interconnect devices. 848 849config FSL_RIO 850 bool "Freescale Embedded SRIO Controller support" 851 depends on RAPIDIO = y && HAS_RAPIDIO 852 default "n" 853 ---help--- 854 Include support for RapidIO controller on Freescale embedded 855 processors (MPC8548, MPC8641, etc). 856 857source "drivers/rapidio/Kconfig" 858 859endmenu 860 861config NONSTATIC_KERNEL 862 bool 863 default n 864 865menu "Advanced setup" 866 depends on PPC32 867 868config ADVANCED_OPTIONS 869 bool "Prompt for advanced kernel configuration options" 870 help 871 This option will enable prompting for a variety of advanced kernel 872 configuration options. These options can cause the kernel to not 873 work if they are set incorrectly, but can be used to optimize certain 874 aspects of kernel memory management. 875 876 Unless you know what you are doing, say N here. 877 878comment "Default settings for advanced configuration options are used" 879 depends on !ADVANCED_OPTIONS 880 881config LOWMEM_SIZE_BOOL 882 bool "Set maximum low memory" 883 depends on ADVANCED_OPTIONS 884 help 885 This option allows you to set the maximum amount of memory which 886 will be used as "low memory", that is, memory which the kernel can 887 access directly, without having to set up a kernel virtual mapping. 888 This can be useful in optimizing the layout of kernel virtual 889 memory. 890 891 Say N here unless you know what you are doing. 892 893config LOWMEM_SIZE 894 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 895 default "0x30000000" 896 897config LOWMEM_CAM_NUM_BOOL 898 bool "Set number of CAMs to use to map low memory" 899 depends on ADVANCED_OPTIONS && FSL_BOOKE 900 help 901 This option allows you to set the maximum number of CAM slots that 902 will be used to map low memory. There are a limited number of slots 903 available and even more limited number that will fit in the L1 MMU. 904 However, using more entries will allow mapping more low memory. This 905 can be useful in optimizing the layout of kernel virtual memory. 906 907 Say N here unless you know what you are doing. 908 909config LOWMEM_CAM_NUM 910 depends on FSL_BOOKE 911 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL 912 default 3 913 914config DYNAMIC_MEMSTART 915 bool "Enable page aligned dynamic load address for kernel" 916 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) 917 select NONSTATIC_KERNEL 918 help 919 This option enables the kernel to be loaded at any page aligned 920 physical address. The kernel creates a mapping from KERNELBASE to 921 the address where the kernel is loaded. The page size here implies 922 the TLB page size of the mapping for kernel on the particular platform. 923 Please refer to the init code for finding the TLB page size. 924 925 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE 926 kernel image, where the only restriction is the page aligned kernel 927 load address. When this option is enabled, the compile time physical 928 address CONFIG_PHYSICAL_START is ignored. 929 930 This option is overridden by CONFIG_RELOCATABLE 931 932config RELOCATABLE 933 bool "Build a relocatable kernel" 934 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) 935 select NONSTATIC_KERNEL 936 help 937 This builds a kernel image that is capable of running at the 938 location the kernel is loaded at, without any alignment restrictions. 939 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. 940 941 One use is for the kexec on panic case where the recovery kernel 942 must live at a different physical address than the primary 943 kernel. 944 945 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 946 it has been loaded at and the compile time physical addresses 947 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 948 setting can still be useful to bootwrappers that need to know the 949 load address of the kernel (eg. u-boot/mkimage). 950 951config RELOCATABLE_PPC32 952 def_bool y 953 depends on PPC32 && RELOCATABLE 954 955config PAGE_OFFSET_BOOL 956 bool "Set custom page offset address" 957 depends on ADVANCED_OPTIONS 958 help 959 This option allows you to set the kernel virtual address at which 960 the kernel will map low memory. This can be useful in optimizing 961 the virtual memory layout of the system. 962 963 Say N here unless you know what you are doing. 964 965config PAGE_OFFSET 966 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 967 default "0xc0000000" 968 969config KERNEL_START_BOOL 970 bool "Set custom kernel base address" 971 depends on ADVANCED_OPTIONS 972 help 973 This option allows you to set the kernel virtual address at which 974 the kernel will be loaded. Normally this should match PAGE_OFFSET 975 however there are times (like kdump) that one might not want them 976 to be the same. 977 978 Say N here unless you know what you are doing. 979 980config KERNEL_START 981 hex "Virtual address of kernel base" if KERNEL_START_BOOL 982 default PAGE_OFFSET if PAGE_OFFSET_BOOL 983 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL 984 default "0xc0000000" 985 986config PHYSICAL_START_BOOL 987 bool "Set physical address where the kernel is loaded" 988 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 989 help 990 This gives the physical address where the kernel is loaded. 991 992 Say N here unless you know what you are doing. 993 994config PHYSICAL_START 995 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 996 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL 997 default "0x00000000" 998 999config PHYSICAL_ALIGN 1000 hex 1001 default "0x04000000" if FSL_BOOKE 1002 help 1003 This value puts the alignment restrictions on physical address 1004 where kernel is loaded and run from. Kernel is compiled for an 1005 address which meets above alignment restriction. 1006 1007config TASK_SIZE_BOOL 1008 bool "Set custom user task size" 1009 depends on ADVANCED_OPTIONS 1010 help 1011 This option allows you to set the amount of virtual address space 1012 allocated to user tasks. This can be useful in optimizing the 1013 virtual memory layout of the system. 1014 1015 Say N here unless you know what you are doing. 1016 1017config TASK_SIZE 1018 hex "Size of user task space" if TASK_SIZE_BOOL 1019 default "0x80000000" if PPC_8xx 1020 default "0xc0000000" 1021 1022config CONSISTENT_SIZE_BOOL 1023 bool "Set custom consistent memory pool size" 1024 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 1025 help 1026 This option allows you to set the size of the 1027 consistent memory pool. This pool of virtual memory 1028 is used to make consistent memory allocations. 1029 1030config CONSISTENT_SIZE 1031 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 1032 default "0x00200000" if NOT_COHERENT_CACHE 1033 1034config PIN_TLB 1035 bool "Pinned Kernel TLBs (860 ONLY)" 1036 depends on ADVANCED_OPTIONS && 8xx 1037endmenu 1038 1039if PPC64 1040config RELOCATABLE 1041 bool "Build a relocatable kernel" 1042 depends on !COMPILE_TEST 1043 select NONSTATIC_KERNEL 1044 help 1045 This builds a kernel image that is capable of running anywhere 1046 in the RMA (real memory area) at any 16k-aligned base address. 1047 The kernel is linked as a position-independent executable (PIE) 1048 and contains dynamic relocations which are processed early 1049 in the bootup process. 1050 1051 One use is for the kexec on panic case where the recovery kernel 1052 must live at a different physical address than the primary 1053 kernel. 1054 1055# This value must have zeroes in the bottom 60 bits otherwise lots will break 1056config PAGE_OFFSET 1057 hex 1058 default "0xc000000000000000" 1059config KERNEL_START 1060 hex 1061 default "0xc000000000000000" 1062config PHYSICAL_START 1063 hex 1064 default "0x00000000" 1065endif 1066 1067config ARCH_RANDOM 1068 def_bool n 1069 1070source "net/Kconfig" 1071 1072source "drivers/Kconfig" 1073 1074source "fs/Kconfig" 1075 1076source "arch/powerpc/sysdev/qe_lib/Kconfig" 1077 1078source "lib/Kconfig" 1079 1080source "arch/powerpc/Kconfig.debug" 1081 1082source "security/Kconfig" 1083 1084config KEYS_COMPAT 1085 bool 1086 depends on COMPAT && KEYS 1087 default y 1088 1089source "crypto/Kconfig" 1090 1091config PPC_LIB_RHEAP 1092 bool 1093 1094source "arch/powerpc/kvm/Kconfig" 1095