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