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 ARCH_BINFMT_ELF_RANDOMIZE_PIE 92 select OF 93 select OF_EARLY_FLATTREE 94 select OF_RESERVED_MEM 95 select HAVE_FTRACE_MCOUNT_RECORD 96 select HAVE_DYNAMIC_FTRACE 97 select HAVE_FUNCTION_TRACER 98 select HAVE_FUNCTION_GRAPH_TRACER 99 select SYSCTL_EXCEPTION_TRACE 100 select ARCH_WANT_OPTIONAL_GPIOLIB 101 select VIRT_TO_BUS if !PPC64 102 select HAVE_IDE 103 select HAVE_IOREMAP_PROT 104 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN 105 select HAVE_KPROBES 106 select HAVE_ARCH_KGDB 107 select HAVE_KRETPROBES 108 select HAVE_ARCH_TRACEHOOK 109 select HAVE_MEMBLOCK 110 select HAVE_MEMBLOCK_NODE_MAP 111 select HAVE_DMA_ATTRS 112 select HAVE_DMA_API_DEBUG 113 select HAVE_OPROFILE 114 select HAVE_DEBUG_KMEMLEAK 115 select ARCH_HAS_SG_CHAIN 116 select GENERIC_ATOMIC64 if PPC32 117 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 118 select HAVE_PERF_EVENTS 119 select HAVE_REGS_AND_STACK_ACCESS_API 120 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 121 select ARCH_WANT_IPC_PARSE_VERSION 122 select SPARSE_IRQ 123 select IRQ_DOMAIN 124 select GENERIC_IRQ_SHOW 125 select GENERIC_IRQ_SHOW_LEVEL 126 select IRQ_FORCED_THREADING 127 select HAVE_RCU_TABLE_FREE if SMP 128 select HAVE_SYSCALL_TRACEPOINTS 129 select HAVE_BPF_JIT if PPC64 130 select HAVE_ARCH_JUMP_LABEL 131 select ARCH_HAVE_NMI_SAFE_CMPXCHG 132 select ARCH_HAS_GCOV_PROFILE_ALL 133 select GENERIC_SMP_IDLE_THREAD 134 select GENERIC_CMOS_UPDATE 135 select GENERIC_TIME_VSYSCALL_OLD 136 select GENERIC_CLOCKEVENTS 137 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 138 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 139 select GENERIC_STRNCPY_FROM_USER 140 select GENERIC_STRNLEN_USER 141 select HAVE_MOD_ARCH_SPECIFIC 142 select MODULES_USE_ELF_RELA 143 select CLONE_BACKWARDS 144 select ARCH_USE_BUILTIN_BSWAP 145 select OLD_SIGSUSPEND 146 select OLD_SIGACTION if PPC32 147 select HAVE_DEBUG_STACKOVERFLOW 148 select HAVE_IRQ_EXIT_ON_IRQ_STACK 149 select ARCH_USE_CMPXCHG_LOCKREF if PPC64 150 select HAVE_ARCH_AUDITSYSCALL 151 select ARCH_SUPPORTS_ATOMIC_RMW 152 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN 153 select NO_BOOTMEM 154 select HAVE_GENERIC_RCU_GUP 155 156config GENERIC_CSUM 157 def_bool CPU_LITTLE_ENDIAN 158 159config EARLY_PRINTK 160 bool 161 default y 162 163config PANIC_TIMEOUT 164 int 165 default 180 166 167config COMPAT 168 bool 169 default y if PPC64 170 select COMPAT_BINFMT_ELF 171 select ARCH_WANT_OLD_COMPAT_IPC 172 select COMPAT_OLD_SIGACTION 173 174config SYSVIPC_COMPAT 175 bool 176 depends on COMPAT && SYSVIPC 177 default y 178 179# All PPC32s use generic nvram driver through ppc_md 180config GENERIC_NVRAM 181 bool 182 default y if PPC32 183 184config SCHED_OMIT_FRAME_POINTER 185 bool 186 default y 187 188config ARCH_MAY_HAVE_PC_FDC 189 bool 190 default PCI 191 192config PPC_OF 193 def_bool y 194 195config PPC_UDBG_16550 196 bool 197 default n 198 199config GENERIC_TBSYNC 200 bool 201 default y if PPC32 && SMP 202 default n 203 204config AUDIT_ARCH 205 bool 206 default y 207 208config GENERIC_BUG 209 bool 210 default y 211 depends on BUG 212 213config SYS_SUPPORTS_APM_EMULATION 214 default y if PMAC_APM_EMU 215 bool 216 217config EPAPR_BOOT 218 bool 219 help 220 Used to allow a board to specify it wants an ePAPR compliant wrapper. 221 default n 222 223config DEFAULT_UIMAGE 224 bool 225 help 226 Used to allow a board to specify it wants a uImage built by default 227 default n 228 229config ARCH_HIBERNATION_POSSIBLE 230 bool 231 default y 232 233config ARCH_SUSPEND_POSSIBLE 234 def_bool y 235 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ 236 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ 237 || 44x || 40x 238 239config PPC_DCR_NATIVE 240 bool 241 default n 242 243config PPC_DCR_MMIO 244 bool 245 default n 246 247config PPC_DCR 248 bool 249 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO 250 default y 251 252config PPC_OF_PLATFORM_PCI 253 bool 254 depends on PCI 255 depends on PPC64 # not supported on 32 bits yet 256 default n 257 258config ARCH_SUPPORTS_DEBUG_PAGEALLOC 259 depends on PPC32 || PPC_STD_MMU_64 260 def_bool y 261 262config ARCH_SUPPORTS_UPROBES 263 def_bool y 264 265config PPC_ADV_DEBUG_REGS 266 bool 267 depends on 40x || BOOKE 268 default y 269 270config PPC_ADV_DEBUG_IACS 271 int 272 depends on PPC_ADV_DEBUG_REGS 273 default 4 if 44x 274 default 2 275 276config PPC_ADV_DEBUG_DACS 277 int 278 depends on PPC_ADV_DEBUG_REGS 279 default 2 280 281config PPC_ADV_DEBUG_DVCS 282 int 283 depends on PPC_ADV_DEBUG_REGS 284 default 2 if 44x 285 default 0 286 287config PPC_ADV_DEBUG_DAC_RANGE 288 bool 289 depends on PPC_ADV_DEBUG_REGS && 44x 290 default y 291 292config PPC_EMULATE_SSTEP 293 bool 294 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT 295 296config ZONE_DMA32 297 bool 298 default y if PPC64 299 300source "init/Kconfig" 301 302source "kernel/Kconfig.freezer" 303 304source "arch/powerpc/sysdev/Kconfig" 305source "arch/powerpc/platforms/Kconfig" 306 307menu "Kernel options" 308 309config HIGHMEM 310 bool "High memory support" 311 depends on PPC32 312 313source kernel/Kconfig.hz 314source kernel/Kconfig.preempt 315source "fs/Kconfig.binfmt" 316 317config HUGETLB_PAGE_SIZE_VARIABLE 318 bool 319 depends on HUGETLB_PAGE 320 default y 321 322config MATH_EMULATION 323 bool "Math emulation" 324 depends on 4xx || 8xx || PPC_MPC832x || BOOKE 325 ---help--- 326 Some PowerPC chips designed for embedded applications do not have 327 a floating-point unit and therefore do not implement the 328 floating-point instructions in the PowerPC instruction set. If you 329 say Y here, the kernel will include code to emulate a floating-point 330 unit, which will allow programs that use floating-point 331 instructions to run. 332 333 This is also useful to emulate missing (optional) instructions 334 such as fsqrt on cores that do have an FPU but do not implement 335 them (such as Freescale BookE). 336 337choice 338 prompt "Math emulation options" 339 default MATH_EMULATION_FULL 340 depends on MATH_EMULATION 341 342config MATH_EMULATION_FULL 343 bool "Emulate all the floating point instructions" 344 ---help--- 345 Select this option will enable the kernel to support to emulate 346 all the floating point instructions. If your SoC doesn't have 347 a FPU, you should select this. 348 349config MATH_EMULATION_HW_UNIMPLEMENTED 350 bool "Just emulate the FPU unimplemented instructions" 351 ---help--- 352 Select this if you know there does have a hardware FPU on your 353 SoC, but some floating point instructions are not implemented by that. 354 355endchoice 356 357config PPC_TRANSACTIONAL_MEM 358 bool "Transactional Memory support for POWERPC" 359 depends on PPC_BOOK3S_64 360 depends on SMP 361 select ALTIVEC 362 select VSX 363 default n 364 ---help--- 365 Support user-mode Transactional Memory on POWERPC. 366 367config IOMMU_HELPER 368 def_bool PPC64 369 370config SWIOTLB 371 bool "SWIOTLB support" 372 default n 373 select IOMMU_HELPER 374 ---help--- 375 Support for IO bounce buffering for systems without an IOMMU. 376 This allows us to DMA to the full physical address space on 377 platforms where the size of a physical address is larger 378 than the bus address. Not all platforms support this. 379 380config HOTPLUG_CPU 381 bool "Support for enabling/disabling CPUs" 382 depends on SMP && (PPC_PSERIES || \ 383 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) 384 ---help--- 385 Say Y here to be able to disable and re-enable individual 386 CPUs at runtime on SMP machines. 387 388 Say N if you are unsure. 389 390config ARCH_CPU_PROBE_RELEASE 391 def_bool y 392 depends on HOTPLUG_CPU 393 394config ARCH_ENABLE_MEMORY_HOTPLUG 395 def_bool y 396 397config ARCH_HAS_WALK_MEMORY 398 def_bool y 399 400config ARCH_ENABLE_MEMORY_HOTREMOVE 401 def_bool y 402 403config PPC64_SUPPORTS_MEMORY_FAILURE 404 bool "Add support for memory hwpoison" 405 depends on PPC_BOOK3S_64 406 default "y" if PPC_POWERNV 407 select ARCH_SUPPORTS_MEMORY_FAILURE 408 409config KEXEC 410 bool "kexec system call" 411 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) 412 help 413 kexec is a system call that implements the ability to shutdown your 414 current kernel, and to start another kernel. It is like a reboot 415 but it is independent of the system firmware. And like a reboot 416 you can start any kernel with it, not just Linux. 417 418 The name comes from the similarity to the exec system call. 419 420 It is an ongoing process to be certain the hardware in a machine 421 is properly shutdown, so do not be surprised if this code does not 422 initially work for you. As of this writing the exact hardware 423 interface is strongly in flux, so no good recommendation can be 424 made. 425 426config CRASH_DUMP 427 bool "Build a kdump crash kernel" 428 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) 429 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE 430 help 431 Build a kernel suitable for use as a kdump capture kernel. 432 The same kernel binary can be used as production kernel and dump 433 capture kernel. 434 435config FA_DUMP 436 bool "Firmware-assisted dump" 437 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC 438 help 439 A robust mechanism to get reliable kernel crash dump with 440 assistance from firmware. This approach does not use kexec, 441 instead firmware assists in booting the kdump kernel 442 while preserving memory contents. Firmware-assisted dump 443 is meant to be a kdump replacement offering robustness and 444 speed not possible without system firmware assistance. 445 446 If unsure, say "N" 447 448config IRQ_ALL_CPUS 449 bool "Distribute interrupts on all CPUs by default" 450 depends on SMP 451 help 452 This option gives the kernel permission to distribute IRQs across 453 multiple CPUs. Saying N here will route all IRQs to the first 454 CPU. Generally saying Y is safe, although some problems have been 455 reported with SMP Power Macintoshes with this option enabled. 456 457config NUMA 458 bool "NUMA support" 459 depends on PPC64 460 default y if SMP && PPC_PSERIES 461 462config NODES_SHIFT 463 int 464 default "8" if PPC64 465 default "4" 466 depends on NEED_MULTIPLE_NODES 467 468config USE_PERCPU_NUMA_NODE_ID 469 def_bool y 470 depends on NUMA 471 472config HAVE_MEMORYLESS_NODES 473 def_bool y 474 depends on NUMA 475 476config ARCH_SELECT_MEMORY_MODEL 477 def_bool y 478 depends on PPC64 479 480config ARCH_FLATMEM_ENABLE 481 def_bool y 482 depends on (PPC64 && !NUMA) || PPC32 483 484config ARCH_SPARSEMEM_ENABLE 485 def_bool y 486 depends on PPC64 487 select SPARSEMEM_VMEMMAP_ENABLE 488 489config ARCH_SPARSEMEM_DEFAULT 490 def_bool y 491 depends on (SMP && PPC_PSERIES) || PPC_PS3 492 493config SYS_SUPPORTS_HUGETLBFS 494 bool 495 496source "mm/Kconfig" 497 498config ARCH_MEMORY_PROBE 499 def_bool y 500 depends on MEMORY_HOTPLUG 501 502# Some NUMA nodes have memory ranges that span 503# other nodes. Even though a pfn is valid and 504# between a node's start and end pfns, it may not 505# reside on that node. See memmap_init_zone() 506# for details. 507config NODES_SPAN_OTHER_NODES 508 def_bool y 509 depends on NEED_MULTIPLE_NODES 510 511config PPC_HAS_HASH_64K 512 bool 513 depends on PPC64 514 default n 515 516config STDBINUTILS 517 bool "Using standard binutils settings" 518 depends on 44x 519 default y 520 help 521 Turning this option off allows you to select 256KB PAGE_SIZE on 44x. 522 Note, that kernel will be able to run only those applications, 523 which had been compiled using binutils later than 2.17.50.0.3 with 524 '-zmax-page-size' set to 256K (the default is 64K). Or, if using 525 the older binutils, you can patch them with a trivial patch, which 526 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. 527 528choice 529 prompt "Page size" 530 default PPC_4K_PAGES 531 help 532 Select the kernel logical page size. Increasing the page size 533 will reduce software overhead at each page boundary, allow 534 hardware prefetch mechanisms to be more effective, and allow 535 larger dma transfers increasing IO efficiency and reducing 536 overhead. However the utilization of memory will increase. 537 For example, each cached file will using a multiple of the 538 page size to hold its contents and the difference between the 539 end of file and the end of page is wasted. 540 541 Some dedicated systems, such as software raid serving with 542 accelerated calculations, have shown significant increases. 543 544 If you configure a 64 bit kernel for 64k pages but the 545 processor does not support them, then the kernel will simulate 546 them with 4k pages, loading them on demand, but with the 547 reduced software overhead and larger internal fragmentation. 548 For the 32 bit kernel, a large page option will not be offered 549 unless it is supported by the configured processor. 550 551 If unsure, choose 4K_PAGES. 552 553config PPC_4K_PAGES 554 bool "4k page size" 555 556config PPC_16K_PAGES 557 bool "16k page size" if 44x || PPC_8xx 558 559config PPC_64K_PAGES 560 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 561 depends on !PPC_FSL_BOOK3E 562 select PPC_HAS_HASH_64K if PPC_STD_MMU_64 563 564config PPC_256K_PAGES 565 bool "256k page size" if 44x 566 depends on !STDBINUTILS 567 help 568 Make the page size 256k. 569 570 As the ELF standard only requires alignment to support page 571 sizes up to 64k, you will need to compile all of your user 572 space applications with a non-standard binutils settings 573 (see the STDBINUTILS description for details). 574 575 Say N unless you know what you are doing. 576 577endchoice 578 579config FORCE_MAX_ZONEORDER 580 int "Maximum zone order" 581 range 9 64 if PPC64 && PPC_64K_PAGES 582 default "9" if PPC64 && PPC_64K_PAGES 583 range 13 64 if PPC64 && !PPC_64K_PAGES 584 default "13" if PPC64 && !PPC_64K_PAGES 585 range 9 64 if PPC32 && PPC_16K_PAGES 586 default "9" if PPC32 && PPC_16K_PAGES 587 range 7 64 if PPC32 && PPC_64K_PAGES 588 default "7" if PPC32 && PPC_64K_PAGES 589 range 5 64 if PPC32 && PPC_256K_PAGES 590 default "5" if PPC32 && PPC_256K_PAGES 591 range 11 64 592 default "11" 593 help 594 The kernel memory allocator divides physically contiguous memory 595 blocks into "zones", where each zone is a power of two number of 596 pages. This option selects the largest power of two that the kernel 597 keeps in the memory allocator. If you need to allocate very large 598 blocks of physically contiguous memory, then you may need to 599 increase this value. 600 601 This config option is actually maximum order plus one. For example, 602 a value of 11 means that the largest free memory block is 2^10 pages. 603 604 The page size is not necessarily 4KB. For example, on 64-bit 605 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 606 this in mind when choosing a value for this option. 607 608config PPC_SUBPAGE_PROT 609 bool "Support setting protections for 4k subpages" 610 depends on PPC_STD_MMU_64 && PPC_64K_PAGES 611 help 612 This option adds support for a system call to allow user programs 613 to set access permissions (read/write, readonly, or no access) 614 on the 4k subpages of each 64k page. 615 616config PPC_COPRO_BASE 617 bool 618 default n 619 620config SCHED_SMT 621 bool "SMT (Hyperthreading) scheduler support" 622 depends on PPC64 && SMP 623 help 624 SMT scheduler support improves the CPU scheduler's decision making 625 when dealing with POWER5 cpus at a cost of slightly increased 626 overhead in some places. If unsure say N here. 627 628config PPC_DENORMALISATION 629 bool "PowerPC denormalisation exception handling" 630 depends on PPC_BOOK3S_64 631 default "y" if PPC_POWERNV 632 ---help--- 633 Add support for handling denormalisation of single precision 634 values. Useful for bare metal only. If unsure say Y here. 635 636config CMDLINE_BOOL 637 bool "Default bootloader kernel arguments" 638 639config CMDLINE 640 string "Initial kernel command string" 641 depends on CMDLINE_BOOL 642 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 643 help 644 On some platforms, there is currently no way for the boot loader to 645 pass arguments to the kernel. For these platforms, you can supply 646 some command-line options at build time by entering them here. In 647 most cases you will need to specify the root device here. 648 649config CMDLINE_FORCE 650 bool "Always use the default kernel command string" 651 depends on CMDLINE_BOOL 652 help 653 Always use the default kernel command string, even if the boot 654 loader passes other arguments to the kernel. 655 This is useful if you cannot or don't want to change the 656 command-line options your boot loader passes to the kernel. 657 658config EXTRA_TARGETS 659 string "Additional default image types" 660 help 661 List additional targets to be built by the bootwrapper here (separated 662 by spaces). This is useful for targets that depend of device tree 663 files in the .dts directory. 664 665 Targets in this list will be build as part of the default build 666 target, or when the user does a 'make zImage' or a 667 'make zImage.initrd'. 668 669 If unsure, leave blank 670 671config ARCH_WANTS_FREEZER_CONTROL 672 def_bool y 673 depends on ADB_PMU 674 675source kernel/power/Kconfig 676 677config SECCOMP 678 bool "Enable seccomp to safely compute untrusted bytecode" 679 depends on PROC_FS 680 default y 681 help 682 This kernel feature is useful for number crunching applications 683 that may need to compute untrusted bytecode during their 684 execution. By using pipes or other transports made available to 685 the process as file descriptors supporting the read/write 686 syscalls, it's possible to isolate those applications in 687 their own address space using seccomp. Once seccomp is 688 enabled via /proc/<pid>/seccomp, it cannot be disabled 689 and the task is only allowed to execute a few safe syscalls 690 defined by each seccomp mode. 691 692 If unsure, say Y. Only embedded should say N here. 693 694endmenu 695 696config ISA_DMA_API 697 bool 698 default PCI 699 700menu "Bus options" 701 702config ISA 703 bool "Support for ISA-bus hardware" 704 depends on PPC_CHRP 705 select PPC_I8259 706 help 707 Find out whether you have ISA slots on your motherboard. ISA is the 708 name of a bus system, i.e. the way the CPU talks to the other stuff 709 inside your box. If you have an Apple machine, say N here; if you 710 have an IBM RS/6000 or pSeries machine, say Y. If you have an 711 embedded board, consult your board documentation. 712 713config ZONE_DMA 714 bool 715 default y 716 717config NEED_DMA_MAP_STATE 718 def_bool (PPC64 || NOT_COHERENT_CACHE) 719 720config NEED_SG_DMA_LENGTH 721 def_bool y 722 723config GENERIC_ISA_DMA 724 bool 725 depends on ISA_DMA_API 726 default y 727 728config PPC_INDIRECT_PCI 729 bool 730 depends on PCI 731 default y if 40x || 44x 732 default n 733 734config EISA 735 bool 736 737config SBUS 738 bool 739 740config FSL_SOC 741 bool 742 743config FSL_PCI 744 bool 745 select PPC_INDIRECT_PCI 746 select PCI_QUIRKS 747 748config FSL_PMC 749 bool 750 default y 751 depends on SUSPEND && (PPC_85xx || PPC_86xx) 752 help 753 Freescale MPC85xx/MPC86xx power management controller support 754 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c 755 756config PPC4xx_CPM 757 bool 758 default y 759 depends on SUSPEND && (44x || 40x) 760 help 761 PPC4xx Clock Power Management (CPM) support (suspend/resume). 762 It also enables support for two different idle states (idle-wait 763 and idle-doze). 764 765config 4xx_SOC 766 bool 767 768config FSL_LBC 769 bool "Freescale Local Bus support" 770 depends on FSL_SOC 771 help 772 Enables reporting of errors from the Freescale local bus 773 controller. Also contains some common code used by 774 drivers for specific local bus peripherals. 775 776config FSL_GTM 777 bool 778 depends on PPC_83xx || QUICC_ENGINE || CPM2 779 help 780 Freescale General-purpose Timers support 781 782# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 783config MCA 784 bool 785 786# Platforms that what PCI turned unconditionally just do select PCI 787# in their config node. Platforms that want to choose at config 788# time should select PPC_PCI_CHOICE 789config PPC_PCI_CHOICE 790 bool 791 792config PCI 793 bool "PCI support" if PPC_PCI_CHOICE 794 default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 795 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON 796 default PCI_QSPAN if !4xx && !CPM2 && 8xx 797 select GENERIC_PCI_IOMAP 798 help 799 Find out whether your system includes a PCI bus. PCI is the name of 800 a bus system, i.e. the way the CPU talks to the other stuff inside 801 your box. If you say Y here, the kernel will include drivers and 802 infrastructure code to support PCI bus devices. 803 804config PCI_DOMAINS 805 def_bool PCI 806 807config PCI_SYSCALL 808 def_bool PCI 809 810config PCI_QSPAN 811 bool "QSpan PCI" 812 depends on !4xx && !CPM2 && 8xx 813 select PPC_I8259 814 help 815 Say Y here if you have a system based on a Motorola 8xx-series 816 embedded processor with a QSPAN PCI interface, otherwise say N. 817 818config PCI_8260 819 bool 820 depends on PCI && 8260 821 select PPC_INDIRECT_PCI 822 default y 823 824source "drivers/pci/pcie/Kconfig" 825 826source "drivers/pci/Kconfig" 827 828source "drivers/pcmcia/Kconfig" 829 830source "drivers/pci/hotplug/Kconfig" 831 832config HAS_RAPIDIO 833 bool 834 default n 835 836config RAPIDIO 837 tristate "RapidIO support" 838 depends on HAS_RAPIDIO || PCI 839 help 840 If you say Y here, the kernel will include drivers and 841 infrastructure code to support RapidIO interconnect devices. 842 843config FSL_RIO 844 bool "Freescale Embedded SRIO Controller support" 845 depends on RAPIDIO = y && HAS_RAPIDIO 846 default "n" 847 ---help--- 848 Include support for RapidIO controller on Freescale embedded 849 processors (MPC8548, MPC8641, etc). 850 851source "drivers/rapidio/Kconfig" 852 853endmenu 854 855config NONSTATIC_KERNEL 856 bool 857 default n 858 859menu "Advanced setup" 860 depends on PPC32 861 862config ADVANCED_OPTIONS 863 bool "Prompt for advanced kernel configuration options" 864 help 865 This option will enable prompting for a variety of advanced kernel 866 configuration options. These options can cause the kernel to not 867 work if they are set incorrectly, but can be used to optimize certain 868 aspects of kernel memory management. 869 870 Unless you know what you are doing, say N here. 871 872comment "Default settings for advanced configuration options are used" 873 depends on !ADVANCED_OPTIONS 874 875config LOWMEM_SIZE_BOOL 876 bool "Set maximum low memory" 877 depends on ADVANCED_OPTIONS 878 help 879 This option allows you to set the maximum amount of memory which 880 will be used as "low memory", that is, memory which the kernel can 881 access directly, without having to set up a kernel virtual mapping. 882 This can be useful in optimizing the layout of kernel virtual 883 memory. 884 885 Say N here unless you know what you are doing. 886 887config LOWMEM_SIZE 888 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 889 default "0x30000000" 890 891config LOWMEM_CAM_NUM_BOOL 892 bool "Set number of CAMs to use to map low memory" 893 depends on ADVANCED_OPTIONS && FSL_BOOKE 894 help 895 This option allows you to set the maximum number of CAM slots that 896 will be used to map low memory. There are a limited number of slots 897 available and even more limited number that will fit in the L1 MMU. 898 However, using more entries will allow mapping more low memory. This 899 can be useful in optimizing the layout of kernel virtual memory. 900 901 Say N here unless you know what you are doing. 902 903config LOWMEM_CAM_NUM 904 depends on FSL_BOOKE 905 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL 906 default 3 907 908config DYNAMIC_MEMSTART 909 bool "Enable page aligned dynamic load address for kernel" 910 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) 911 select NONSTATIC_KERNEL 912 help 913 This option enables the kernel to be loaded at any page aligned 914 physical address. The kernel creates a mapping from KERNELBASE to 915 the address where the kernel is loaded. The page size here implies 916 the TLB page size of the mapping for kernel on the particular platform. 917 Please refer to the init code for finding the TLB page size. 918 919 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE 920 kernel image, where the only restriction is the page aligned kernel 921 load address. When this option is enabled, the compile time physical 922 address CONFIG_PHYSICAL_START is ignored. 923 924 This option is overridden by CONFIG_RELOCATABLE 925 926config RELOCATABLE 927 bool "Build a relocatable kernel" 928 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) 929 select NONSTATIC_KERNEL 930 help 931 This builds a kernel image that is capable of running at the 932 location the kernel is loaded at, without any alignment restrictions. 933 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. 934 935 One use is for the kexec on panic case where the recovery kernel 936 must live at a different physical address than the primary 937 kernel. 938 939 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 940 it has been loaded at and the compile time physical addresses 941 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 942 setting can still be useful to bootwrappers that need to know the 943 load address of the kernel (eg. u-boot/mkimage). 944 945config RELOCATABLE_PPC32 946 def_bool y 947 depends on PPC32 && RELOCATABLE 948 949config PAGE_OFFSET_BOOL 950 bool "Set custom page offset address" 951 depends on ADVANCED_OPTIONS 952 help 953 This option allows you to set the kernel virtual address at which 954 the kernel will map low memory. This can be useful in optimizing 955 the virtual memory layout of the system. 956 957 Say N here unless you know what you are doing. 958 959config PAGE_OFFSET 960 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 961 default "0xc0000000" 962 963config KERNEL_START_BOOL 964 bool "Set custom kernel base address" 965 depends on ADVANCED_OPTIONS 966 help 967 This option allows you to set the kernel virtual address at which 968 the kernel will be loaded. Normally this should match PAGE_OFFSET 969 however there are times (like kdump) that one might not want them 970 to be the same. 971 972 Say N here unless you know what you are doing. 973 974config KERNEL_START 975 hex "Virtual address of kernel base" if KERNEL_START_BOOL 976 default PAGE_OFFSET if PAGE_OFFSET_BOOL 977 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL 978 default "0xc0000000" 979 980config PHYSICAL_START_BOOL 981 bool "Set physical address where the kernel is loaded" 982 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 983 help 984 This gives the physical address where the kernel is loaded. 985 986 Say N here unless you know what you are doing. 987 988config PHYSICAL_START 989 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 990 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL 991 default "0x00000000" 992 993config PHYSICAL_ALIGN 994 hex 995 default "0x04000000" if FSL_BOOKE 996 help 997 This value puts the alignment restrictions on physical address 998 where kernel is loaded and run from. Kernel is compiled for an 999 address which meets above alignment restriction. 1000 1001config TASK_SIZE_BOOL 1002 bool "Set custom user task size" 1003 depends on ADVANCED_OPTIONS 1004 help 1005 This option allows you to set the amount of virtual address space 1006 allocated to user tasks. This can be useful in optimizing the 1007 virtual memory layout of the system. 1008 1009 Say N here unless you know what you are doing. 1010 1011config TASK_SIZE 1012 hex "Size of user task space" if TASK_SIZE_BOOL 1013 default "0x80000000" if PPC_8xx 1014 default "0xc0000000" 1015 1016config CONSISTENT_SIZE_BOOL 1017 bool "Set custom consistent memory pool size" 1018 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 1019 help 1020 This option allows you to set the size of the 1021 consistent memory pool. This pool of virtual memory 1022 is used to make consistent memory allocations. 1023 1024config CONSISTENT_SIZE 1025 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 1026 default "0x00200000" if NOT_COHERENT_CACHE 1027 1028config PIN_TLB 1029 bool "Pinned Kernel TLBs (860 ONLY)" 1030 depends on ADVANCED_OPTIONS && 8xx 1031endmenu 1032 1033if PPC64 1034config RELOCATABLE 1035 bool "Build a relocatable kernel" 1036 depends on !COMPILE_TEST 1037 select NONSTATIC_KERNEL 1038 help 1039 This builds a kernel image that is capable of running anywhere 1040 in the RMA (real memory area) at any 16k-aligned base address. 1041 The kernel is linked as a position-independent executable (PIE) 1042 and contains dynamic relocations which are processed early 1043 in the bootup process. 1044 1045 One use is for the kexec on panic case where the recovery kernel 1046 must live at a different physical address than the primary 1047 kernel. 1048 1049# This value must have zeroes in the bottom 60 bits otherwise lots will break 1050config PAGE_OFFSET 1051 hex 1052 default "0xc000000000000000" 1053config KERNEL_START 1054 hex 1055 default "0xc000000000000000" 1056config PHYSICAL_START 1057 hex 1058 default "0x00000000" 1059endif 1060 1061config ARCH_RANDOM 1062 def_bool n 1063 1064source "net/Kconfig" 1065 1066source "drivers/Kconfig" 1067 1068source "fs/Kconfig" 1069 1070source "arch/powerpc/sysdev/qe_lib/Kconfig" 1071 1072source "lib/Kconfig" 1073 1074source "arch/powerpc/Kconfig.debug" 1075 1076source "security/Kconfig" 1077 1078config KEYS_COMPAT 1079 bool 1080 depends on COMPAT && KEYS 1081 default y 1082 1083source "crypto/Kconfig" 1084 1085config PPC_LIB_RHEAP 1086 bool 1087 1088source "arch/powerpc/kvm/Kconfig" 1089