1source "arch/powerpc/platforms/Kconfig.cputype" 2 3config PPC32 4 bool 5 default y if !PPC64 6 7config 32BIT 8 bool 9 default y if PPC32 10 11config 64BIT 12 bool 13 default y if PPC64 14 15config WORD_SIZE 16 int 17 default 64 if PPC64 18 default 32 if !PPC64 19 20config ARCH_PHYS_ADDR_T_64BIT 21 def_bool PPC64 || PHYS_64BIT 22 23config ARCH_DMA_ADDR_T_64BIT 24 def_bool ARCH_PHYS_ADDR_T_64BIT 25 26config MMU 27 bool 28 default y 29 30config HAVE_SETUP_PER_CPU_AREA 31 def_bool PPC64 32 33config NEED_PER_CPU_EMBED_FIRST_CHUNK 34 def_bool PPC64 35 36config NR_IRQS 37 int "Number of virtual interrupt numbers" 38 range 32 32768 39 default "512" 40 help 41 This defines the number of virtual interrupt numbers the kernel 42 can manage. Virtual interrupt numbers are what you see in 43 /proc/interrupts. If you configure your system to have too few, 44 drivers will fail to load or worse - handle with care. 45 46config STACKTRACE_SUPPORT 47 bool 48 default y 49 50config HAVE_LATENCYTOP_SUPPORT 51 def_bool y 52 53config TRACE_IRQFLAGS_SUPPORT 54 bool 55 default y 56 57config LOCKDEP_SUPPORT 58 bool 59 default y 60 61config RWSEM_GENERIC_SPINLOCK 62 bool 63 64config RWSEM_XCHGADD_ALGORITHM 65 bool 66 default y 67 68config GENERIC_LOCKBREAK 69 bool 70 default y 71 depends on SMP && PREEMPT 72 73config ARCH_HAS_ILOG2_U32 74 bool 75 default y 76 77config ARCH_HAS_ILOG2_U64 78 bool 79 default y if 64BIT 80 81config GENERIC_HWEIGHT 82 bool 83 default y 84 85config PPC 86 bool 87 default y 88 select ARCH_MIGHT_HAVE_PC_PARPORT 89 select ARCH_MIGHT_HAVE_PC_SERIO 90 select BINFMT_ELF 91 select OF 92 select OF_EARLY_FLATTREE 93 select OF_RESERVED_MEM 94 select HAVE_FTRACE_MCOUNT_RECORD 95 select HAVE_DYNAMIC_FTRACE 96 select HAVE_FUNCTION_TRACER 97 select HAVE_FUNCTION_GRAPH_TRACER 98 select SYSCTL_EXCEPTION_TRACE 99 select ARCH_WANT_OPTIONAL_GPIOLIB 100 select VIRT_TO_BUS if !PPC64 101 select HAVE_IDE 102 select HAVE_IOREMAP_PROT 103 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN 104 select HAVE_KPROBES 105 select HAVE_ARCH_KGDB 106 select HAVE_KRETPROBES 107 select HAVE_ARCH_TRACEHOOK 108 select HAVE_MEMBLOCK 109 select HAVE_MEMBLOCK_NODE_MAP 110 select HAVE_DMA_ATTRS 111 select HAVE_DMA_API_DEBUG 112 select HAVE_OPROFILE 113 select HAVE_DEBUG_KMEMLEAK 114 select ARCH_HAS_SG_CHAIN 115 select GENERIC_ATOMIC64 if PPC32 116 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 117 select HAVE_PERF_EVENTS 118 select HAVE_REGS_AND_STACK_ACCESS_API 119 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 120 select ARCH_WANT_IPC_PARSE_VERSION 121 select SPARSE_IRQ 122 select IRQ_DOMAIN 123 select GENERIC_IRQ_SHOW 124 select GENERIC_IRQ_SHOW_LEVEL 125 select IRQ_FORCED_THREADING 126 select HAVE_RCU_TABLE_FREE if SMP 127 select HAVE_SYSCALL_TRACEPOINTS 128 select HAVE_BPF_JIT if PPC64 129 select HAVE_ARCH_JUMP_LABEL 130 select ARCH_HAVE_NMI_SAFE_CMPXCHG 131 select GENERIC_SMP_IDLE_THREAD 132 select GENERIC_CMOS_UPDATE 133 select GENERIC_TIME_VSYSCALL_OLD 134 select GENERIC_CLOCKEVENTS 135 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 136 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 137 select GENERIC_STRNCPY_FROM_USER 138 select GENERIC_STRNLEN_USER 139 select HAVE_MOD_ARCH_SPECIFIC 140 select MODULES_USE_ELF_RELA 141 select CLONE_BACKWARDS 142 select ARCH_USE_BUILTIN_BSWAP 143 select OLD_SIGSUSPEND 144 select OLD_SIGACTION if PPC32 145 select HAVE_DEBUG_STACKOVERFLOW 146 select HAVE_IRQ_EXIT_ON_IRQ_STACK 147 select ARCH_USE_CMPXCHG_LOCKREF if PPC64 148 select HAVE_ARCH_AUDITSYSCALL 149 select ARCH_SUPPORTS_ATOMIC_RMW 150 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN 151 152config GENERIC_CSUM 153 def_bool CPU_LITTLE_ENDIAN 154 155config EARLY_PRINTK 156 bool 157 default y 158 159config PANIC_TIMEOUT 160 int 161 default 180 162 163config COMPAT 164 bool 165 default y if PPC64 166 select COMPAT_BINFMT_ELF 167 select ARCH_WANT_OLD_COMPAT_IPC 168 select COMPAT_OLD_SIGACTION 169 170config SYSVIPC_COMPAT 171 bool 172 depends on COMPAT && SYSVIPC 173 default y 174 175# All PPC32s use generic nvram driver through ppc_md 176config GENERIC_NVRAM 177 bool 178 default y if PPC32 179 180config SCHED_OMIT_FRAME_POINTER 181 bool 182 default y 183 184config ARCH_MAY_HAVE_PC_FDC 185 bool 186 default PCI 187 188config PPC_OF 189 def_bool y 190 191config PPC_UDBG_16550 192 bool 193 default n 194 195config GENERIC_TBSYNC 196 bool 197 default y if PPC32 && SMP 198 default n 199 200config AUDIT_ARCH 201 bool 202 default y 203 204config GENERIC_BUG 205 bool 206 default y 207 depends on BUG 208 209config SYS_SUPPORTS_APM_EMULATION 210 default y if PMAC_APM_EMU 211 bool 212 213config EPAPR_BOOT 214 bool 215 help 216 Used to allow a board to specify it wants an ePAPR compliant wrapper. 217 default n 218 219config DEFAULT_UIMAGE 220 bool 221 help 222 Used to allow a board to specify it wants a uImage built by default 223 default n 224 225config ARCH_HIBERNATION_POSSIBLE 226 bool 227 default y 228 229config ARCH_SUSPEND_POSSIBLE 230 def_bool y 231 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ 232 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ 233 || 44x || 40x 234 235config PPC_DCR_NATIVE 236 bool 237 default n 238 239config PPC_DCR_MMIO 240 bool 241 default n 242 243config PPC_DCR 244 bool 245 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO 246 default y 247 248config PPC_OF_PLATFORM_PCI 249 bool 250 depends on PCI 251 depends on PPC64 # not supported on 32 bits yet 252 default n 253 254config ARCH_SUPPORTS_DEBUG_PAGEALLOC 255 def_bool y 256 257config ARCH_SUPPORTS_UPROBES 258 def_bool y 259 260config PPC_ADV_DEBUG_REGS 261 bool 262 depends on 40x || BOOKE 263 default y 264 265config PPC_ADV_DEBUG_IACS 266 int 267 depends on PPC_ADV_DEBUG_REGS 268 default 4 if 44x 269 default 2 270 271config PPC_ADV_DEBUG_DACS 272 int 273 depends on PPC_ADV_DEBUG_REGS 274 default 2 275 276config PPC_ADV_DEBUG_DVCS 277 int 278 depends on PPC_ADV_DEBUG_REGS 279 default 2 if 44x 280 default 0 281 282config PPC_ADV_DEBUG_DAC_RANGE 283 bool 284 depends on PPC_ADV_DEBUG_REGS && 44x 285 default y 286 287config PPC_EMULATE_SSTEP 288 bool 289 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT 290 291config ZONE_DMA32 292 bool 293 default y if PPC64 294 295source "init/Kconfig" 296 297source "kernel/Kconfig.freezer" 298 299source "arch/powerpc/sysdev/Kconfig" 300source "arch/powerpc/platforms/Kconfig" 301 302menu "Kernel options" 303 304config HIGHMEM 305 bool "High memory support" 306 depends on PPC32 307 308source kernel/Kconfig.hz 309source kernel/Kconfig.preempt 310source "fs/Kconfig.binfmt" 311 312config HUGETLB_PAGE_SIZE_VARIABLE 313 bool 314 depends on HUGETLB_PAGE 315 default y 316 317config MATH_EMULATION 318 bool "Math emulation" 319 depends on 4xx || 8xx || PPC_MPC832x || BOOKE 320 ---help--- 321 Some PowerPC chips designed for embedded applications do not have 322 a floating-point unit and therefore do not implement the 323 floating-point instructions in the PowerPC instruction set. If you 324 say Y here, the kernel will include code to emulate a floating-point 325 unit, which will allow programs that use floating-point 326 instructions to run. 327 328 This is also useful to emulate missing (optional) instructions 329 such as fsqrt on cores that do have an FPU but do not implement 330 them (such as Freescale BookE). 331 332choice 333 prompt "Math emulation options" 334 default MATH_EMULATION_FULL 335 depends on MATH_EMULATION 336 337config MATH_EMULATION_FULL 338 bool "Emulate all the floating point instructions" 339 ---help--- 340 Select this option will enable the kernel to support to emulate 341 all the floating point instructions. If your SoC doesn't have 342 a FPU, you should select this. 343 344config MATH_EMULATION_HW_UNIMPLEMENTED 345 bool "Just emulate the FPU unimplemented instructions" 346 ---help--- 347 Select this if you know there does have a hardware FPU on your 348 SoC, but some floating point instructions are not implemented by that. 349 350endchoice 351 352config PPC_TRANSACTIONAL_MEM 353 bool "Transactional Memory support for POWERPC" 354 depends on PPC_BOOK3S_64 355 depends on SMP 356 select ALTIVEC 357 select VSX 358 default n 359 ---help--- 360 Support user-mode Transactional Memory on POWERPC. 361 362config IOMMU_HELPER 363 def_bool PPC64 364 365config SWIOTLB 366 bool "SWIOTLB support" 367 default n 368 select IOMMU_HELPER 369 ---help--- 370 Support for IO bounce buffering for systems without an IOMMU. 371 This allows us to DMA to the full physical address space on 372 platforms where the size of a physical address is larger 373 than the bus address. Not all platforms support this. 374 375config HOTPLUG_CPU 376 bool "Support for enabling/disabling CPUs" 377 depends on SMP && (PPC_PSERIES || \ 378 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) 379 ---help--- 380 Say Y here to be able to disable and re-enable individual 381 CPUs at runtime on SMP machines. 382 383 Say N if you are unsure. 384 385config ARCH_CPU_PROBE_RELEASE 386 def_bool y 387 depends on HOTPLUG_CPU 388 389config ARCH_ENABLE_MEMORY_HOTPLUG 390 def_bool y 391 392config ARCH_HAS_WALK_MEMORY 393 def_bool y 394 395config ARCH_ENABLE_MEMORY_HOTREMOVE 396 def_bool y 397 398config PPC64_SUPPORTS_MEMORY_FAILURE 399 bool "Add support for memory hwpoison" 400 depends on PPC_BOOK3S_64 401 default "y" if PPC_POWERNV 402 select ARCH_SUPPORTS_MEMORY_FAILURE 403 404config KEXEC 405 bool "kexec system call" 406 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) 407 help 408 kexec is a system call that implements the ability to shutdown your 409 current kernel, and to start another kernel. It is like a reboot 410 but it is independent of the system firmware. And like a reboot 411 you can start any kernel with it, not just Linux. 412 413 The name comes from the similarity to the exec system call. 414 415 It is an ongoing process to be certain the hardware in a machine 416 is properly shutdown, so do not be surprised if this code does not 417 initially work for you. As of this writing the exact hardware 418 interface is strongly in flux, so no good recommendation can be 419 made. 420 421config CRASH_DUMP 422 bool "Build a kdump crash kernel" 423 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) 424 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE 425 help 426 Build a kernel suitable for use as a kdump capture kernel. 427 The same kernel binary can be used as production kernel and dump 428 capture kernel. 429 430config FA_DUMP 431 bool "Firmware-assisted dump" 432 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC 433 help 434 A robust mechanism to get reliable kernel crash dump with 435 assistance from firmware. This approach does not use kexec, 436 instead firmware assists in booting the kdump kernel 437 while preserving memory contents. Firmware-assisted dump 438 is meant to be a kdump replacement offering robustness and 439 speed not possible without system firmware assistance. 440 441 If unsure, say "N" 442 443config IRQ_ALL_CPUS 444 bool "Distribute interrupts on all CPUs by default" 445 depends on SMP 446 help 447 This option gives the kernel permission to distribute IRQs across 448 multiple CPUs. Saying N here will route all IRQs to the first 449 CPU. Generally saying Y is safe, although some problems have been 450 reported with SMP Power Macintoshes with this option enabled. 451 452config NUMA 453 bool "NUMA support" 454 depends on PPC64 455 default y if SMP && PPC_PSERIES 456 457config NODES_SHIFT 458 int 459 default "8" if PPC64 460 default "4" 461 depends on NEED_MULTIPLE_NODES 462 463config USE_PERCPU_NUMA_NODE_ID 464 def_bool y 465 depends on NUMA 466 467config HAVE_MEMORYLESS_NODES 468 def_bool y 469 depends on NUMA 470 471config ARCH_SELECT_MEMORY_MODEL 472 def_bool y 473 depends on PPC64 474 475config ARCH_FLATMEM_ENABLE 476 def_bool y 477 depends on (PPC64 && !NUMA) || PPC32 478 479config ARCH_SPARSEMEM_ENABLE 480 def_bool y 481 depends on PPC64 482 select SPARSEMEM_VMEMMAP_ENABLE 483 484config ARCH_SPARSEMEM_DEFAULT 485 def_bool y 486 depends on (SMP && PPC_PSERIES) || PPC_PS3 487 488config SYS_SUPPORTS_HUGETLBFS 489 bool 490 491source "mm/Kconfig" 492 493config ARCH_MEMORY_PROBE 494 def_bool y 495 depends on MEMORY_HOTPLUG 496 497# Some NUMA nodes have memory ranges that span 498# other nodes. Even though a pfn is valid and 499# between a node's start and end pfns, it may not 500# reside on that node. See memmap_init_zone() 501# for details. 502config NODES_SPAN_OTHER_NODES 503 def_bool y 504 depends on NEED_MULTIPLE_NODES 505 506config PPC_HAS_HASH_64K 507 bool 508 depends on PPC64 509 default n 510 511config STDBINUTILS 512 bool "Using standard binutils settings" 513 depends on 44x 514 default y 515 help 516 Turning this option off allows you to select 256KB PAGE_SIZE on 44x. 517 Note, that kernel will be able to run only those applications, 518 which had been compiled using binutils later than 2.17.50.0.3 with 519 '-zmax-page-size' set to 256K (the default is 64K). Or, if using 520 the older binutils, you can patch them with a trivial patch, which 521 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. 522 523choice 524 prompt "Page size" 525 default PPC_4K_PAGES 526 help 527 Select the kernel logical page size. Increasing the page size 528 will reduce software overhead at each page boundary, allow 529 hardware prefetch mechanisms to be more effective, and allow 530 larger dma transfers increasing IO efficiency and reducing 531 overhead. However the utilization of memory will increase. 532 For example, each cached file will using a multiple of the 533 page size to hold its contents and the difference between the 534 end of file and the end of page is wasted. 535 536 Some dedicated systems, such as software raid serving with 537 accelerated calculations, have shown significant increases. 538 539 If you configure a 64 bit kernel for 64k pages but the 540 processor does not support them, then the kernel will simulate 541 them with 4k pages, loading them on demand, but with the 542 reduced software overhead and larger internal fragmentation. 543 For the 32 bit kernel, a large page option will not be offered 544 unless it is supported by the configured processor. 545 546 If unsure, choose 4K_PAGES. 547 548config PPC_4K_PAGES 549 bool "4k page size" 550 551config PPC_16K_PAGES 552 bool "16k page size" if 44x 553 554config PPC_64K_PAGES 555 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 556 depends on !PPC_FSL_BOOK3E 557 select PPC_HAS_HASH_64K if PPC_STD_MMU_64 558 559config PPC_256K_PAGES 560 bool "256k page size" if 44x 561 depends on !STDBINUTILS 562 help 563 Make the page size 256k. 564 565 As the ELF standard only requires alignment to support page 566 sizes up to 64k, you will need to compile all of your user 567 space applications with a non-standard binutils settings 568 (see the STDBINUTILS description for details). 569 570 Say N unless you know what you are doing. 571 572endchoice 573 574config FORCE_MAX_ZONEORDER 575 int "Maximum zone order" 576 range 9 64 if PPC64 && PPC_64K_PAGES 577 default "9" if PPC64 && PPC_64K_PAGES 578 range 13 64 if PPC64 && !PPC_64K_PAGES 579 default "13" if PPC64 && !PPC_64K_PAGES 580 range 9 64 if PPC32 && PPC_16K_PAGES 581 default "9" if PPC32 && PPC_16K_PAGES 582 range 7 64 if PPC32 && PPC_64K_PAGES 583 default "7" if PPC32 && PPC_64K_PAGES 584 range 5 64 if PPC32 && PPC_256K_PAGES 585 default "5" if PPC32 && PPC_256K_PAGES 586 range 11 64 587 default "11" 588 help 589 The kernel memory allocator divides physically contiguous memory 590 blocks into "zones", where each zone is a power of two number of 591 pages. This option selects the largest power of two that the kernel 592 keeps in the memory allocator. If you need to allocate very large 593 blocks of physically contiguous memory, then you may need to 594 increase this value. 595 596 This config option is actually maximum order plus one. For example, 597 a value of 11 means that the largest free memory block is 2^10 pages. 598 599 The page size is not necessarily 4KB. For example, on 64-bit 600 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 601 this in mind when choosing a value for this option. 602 603config PPC_SUBPAGE_PROT 604 bool "Support setting protections for 4k subpages" 605 depends on PPC_STD_MMU_64 && PPC_64K_PAGES 606 help 607 This option adds support for a system call to allow user programs 608 to set access permissions (read/write, readonly, or no access) 609 on the 4k subpages of each 64k page. 610 611config PPC_COPRO_BASE 612 bool 613 default n 614 615config SCHED_SMT 616 bool "SMT (Hyperthreading) scheduler support" 617 depends on PPC64 && SMP 618 help 619 SMT scheduler support improves the CPU scheduler's decision making 620 when dealing with POWER5 cpus at a cost of slightly increased 621 overhead in some places. If unsure say N here. 622 623config PPC_DENORMALISATION 624 bool "PowerPC denormalisation exception handling" 625 depends on PPC_BOOK3S_64 626 default "y" if PPC_POWERNV 627 ---help--- 628 Add support for handling denormalisation of single precision 629 values. Useful for bare metal only. If unsure say Y here. 630 631config CMDLINE_BOOL 632 bool "Default bootloader kernel arguments" 633 634config CMDLINE 635 string "Initial kernel command string" 636 depends on CMDLINE_BOOL 637 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 638 help 639 On some platforms, there is currently no way for the boot loader to 640 pass arguments to the kernel. For these platforms, you can supply 641 some command-line options at build time by entering them here. In 642 most cases you will need to specify the root device here. 643 644config CMDLINE_FORCE 645 bool "Always use the default kernel command string" 646 depends on CMDLINE_BOOL 647 help 648 Always use the default kernel command string, even if the boot 649 loader passes other arguments to the kernel. 650 This is useful if you cannot or don't want to change the 651 command-line options your boot loader passes to the kernel. 652 653config EXTRA_TARGETS 654 string "Additional default image types" 655 help 656 List additional targets to be built by the bootwrapper here (separated 657 by spaces). This is useful for targets that depend of device tree 658 files in the .dts directory. 659 660 Targets in this list will be build as part of the default build 661 target, or when the user does a 'make zImage' or a 662 'make zImage.initrd'. 663 664 If unsure, leave blank 665 666config ARCH_WANTS_FREEZER_CONTROL 667 def_bool y 668 depends on ADB_PMU 669 670source kernel/power/Kconfig 671 672config SECCOMP 673 bool "Enable seccomp to safely compute untrusted bytecode" 674 depends on PROC_FS 675 default y 676 help 677 This kernel feature is useful for number crunching applications 678 that may need to compute untrusted bytecode during their 679 execution. By using pipes or other transports made available to 680 the process as file descriptors supporting the read/write 681 syscalls, it's possible to isolate those applications in 682 their own address space using seccomp. Once seccomp is 683 enabled via /proc/<pid>/seccomp, it cannot be disabled 684 and the task is only allowed to execute a few safe syscalls 685 defined by each seccomp mode. 686 687 If unsure, say Y. Only embedded should say N here. 688 689endmenu 690 691config ISA_DMA_API 692 bool 693 default PCI 694 695menu "Bus options" 696 697config ISA 698 bool "Support for ISA-bus hardware" 699 depends on PPC_CHRP 700 select PPC_I8259 701 help 702 Find out whether you have ISA slots on your motherboard. ISA is the 703 name of a bus system, i.e. the way the CPU talks to the other stuff 704 inside your box. If you have an Apple machine, say N here; if you 705 have an IBM RS/6000 or pSeries machine, say Y. If you have an 706 embedded board, consult your board documentation. 707 708config ZONE_DMA 709 bool 710 default y 711 712config NEED_DMA_MAP_STATE 713 def_bool (PPC64 || NOT_COHERENT_CACHE) 714 715config NEED_SG_DMA_LENGTH 716 def_bool y 717 718config GENERIC_ISA_DMA 719 bool 720 depends on ISA_DMA_API 721 default y 722 723config PPC_INDIRECT_PCI 724 bool 725 depends on PCI 726 default y if 40x || 44x 727 default n 728 729config EISA 730 bool 731 732config SBUS 733 bool 734 735config FSL_SOC 736 bool 737 738config FSL_PCI 739 bool 740 select PPC_INDIRECT_PCI 741 select PCI_QUIRKS 742 743config FSL_PMC 744 bool 745 default y 746 depends on SUSPEND && (PPC_85xx || PPC_86xx) 747 help 748 Freescale MPC85xx/MPC86xx power management controller support 749 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c 750 751config PPC4xx_CPM 752 bool 753 default y 754 depends on SUSPEND && (44x || 40x) 755 help 756 PPC4xx Clock Power Management (CPM) support (suspend/resume). 757 It also enables support for two different idle states (idle-wait 758 and idle-doze). 759 760config 4xx_SOC 761 bool 762 763config FSL_LBC 764 bool "Freescale Local Bus support" 765 depends on FSL_SOC 766 help 767 Enables reporting of errors from the Freescale local bus 768 controller. Also contains some common code used by 769 drivers for specific local bus peripherals. 770 771config FSL_GTM 772 bool 773 depends on PPC_83xx || QUICC_ENGINE || CPM2 774 help 775 Freescale General-purpose Timers support 776 777# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 778config MCA 779 bool 780 781# Platforms that what PCI turned unconditionally just do select PCI 782# in their config node. Platforms that want to choose at config 783# time should select PPC_PCI_CHOICE 784config PPC_PCI_CHOICE 785 bool 786 787config PCI 788 bool "PCI support" if PPC_PCI_CHOICE 789 default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 790 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON 791 default PCI_QSPAN if !4xx && !CPM2 && 8xx 792 select GENERIC_PCI_IOMAP 793 help 794 Find out whether your system includes a PCI bus. PCI is the name of 795 a bus system, i.e. the way the CPU talks to the other stuff inside 796 your box. If you say Y here, the kernel will include drivers and 797 infrastructure code to support PCI bus devices. 798 799config PCI_DOMAINS 800 def_bool PCI 801 802config PCI_SYSCALL 803 def_bool PCI 804 805config PCI_QSPAN 806 bool "QSpan PCI" 807 depends on !4xx && !CPM2 && 8xx 808 select PPC_I8259 809 help 810 Say Y here if you have a system based on a Motorola 8xx-series 811 embedded processor with a QSPAN PCI interface, otherwise say N. 812 813config PCI_8260 814 bool 815 depends on PCI && 8260 816 select PPC_INDIRECT_PCI 817 default y 818 819source "drivers/pci/pcie/Kconfig" 820 821source "drivers/pci/Kconfig" 822 823source "drivers/pcmcia/Kconfig" 824 825source "drivers/pci/hotplug/Kconfig" 826 827config HAS_RAPIDIO 828 bool 829 default n 830 831config RAPIDIO 832 tristate "RapidIO support" 833 depends on HAS_RAPIDIO || PCI 834 help 835 If you say Y here, the kernel will include drivers and 836 infrastructure code to support RapidIO interconnect devices. 837 838config FSL_RIO 839 bool "Freescale Embedded SRIO Controller support" 840 depends on RAPIDIO = y && HAS_RAPIDIO 841 default "n" 842 ---help--- 843 Include support for RapidIO controller on Freescale embedded 844 processors (MPC8548, MPC8641, etc). 845 846source "drivers/rapidio/Kconfig" 847 848endmenu 849 850config NONSTATIC_KERNEL 851 bool 852 default n 853 854menu "Advanced setup" 855 depends on PPC32 856 857config ADVANCED_OPTIONS 858 bool "Prompt for advanced kernel configuration options" 859 help 860 This option will enable prompting for a variety of advanced kernel 861 configuration options. These options can cause the kernel to not 862 work if they are set incorrectly, but can be used to optimize certain 863 aspects of kernel memory management. 864 865 Unless you know what you are doing, say N here. 866 867comment "Default settings for advanced configuration options are used" 868 depends on !ADVANCED_OPTIONS 869 870config LOWMEM_SIZE_BOOL 871 bool "Set maximum low memory" 872 depends on ADVANCED_OPTIONS 873 help 874 This option allows you to set the maximum amount of memory which 875 will be used as "low memory", that is, memory which the kernel can 876 access directly, without having to set up a kernel virtual mapping. 877 This can be useful in optimizing the layout of kernel virtual 878 memory. 879 880 Say N here unless you know what you are doing. 881 882config LOWMEM_SIZE 883 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 884 default "0x30000000" 885 886config LOWMEM_CAM_NUM_BOOL 887 bool "Set number of CAMs to use to map low memory" 888 depends on ADVANCED_OPTIONS && FSL_BOOKE 889 help 890 This option allows you to set the maximum number of CAM slots that 891 will be used to map low memory. There are a limited number of slots 892 available and even more limited number that will fit in the L1 MMU. 893 However, using more entries will allow mapping more low memory. This 894 can be useful in optimizing the layout of kernel virtual memory. 895 896 Say N here unless you know what you are doing. 897 898config LOWMEM_CAM_NUM 899 depends on FSL_BOOKE 900 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL 901 default 3 902 903config DYNAMIC_MEMSTART 904 bool "Enable page aligned dynamic load address for kernel" 905 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) 906 select NONSTATIC_KERNEL 907 help 908 This option enables the kernel to be loaded at any page aligned 909 physical address. The kernel creates a mapping from KERNELBASE to 910 the address where the kernel is loaded. The page size here implies 911 the TLB page size of the mapping for kernel on the particular platform. 912 Please refer to the init code for finding the TLB page size. 913 914 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE 915 kernel image, where the only restriction is the page aligned kernel 916 load address. When this option is enabled, the compile time physical 917 address CONFIG_PHYSICAL_START is ignored. 918 919 This option is overridden by CONFIG_RELOCATABLE 920 921config RELOCATABLE 922 bool "Build a relocatable kernel" 923 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) 924 select NONSTATIC_KERNEL 925 help 926 This builds a kernel image that is capable of running at the 927 location the kernel is loaded at, without any alignment restrictions. 928 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. 929 930 One use is for the kexec on panic case where the recovery kernel 931 must live at a different physical address than the primary 932 kernel. 933 934 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 935 it has been loaded at and the compile time physical addresses 936 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 937 setting can still be useful to bootwrappers that need to know the 938 load address of the kernel (eg. u-boot/mkimage). 939 940config RELOCATABLE_PPC32 941 def_bool y 942 depends on PPC32 && RELOCATABLE 943 944config PAGE_OFFSET_BOOL 945 bool "Set custom page offset address" 946 depends on ADVANCED_OPTIONS 947 help 948 This option allows you to set the kernel virtual address at which 949 the kernel will map low memory. This can be useful in optimizing 950 the virtual memory layout of the system. 951 952 Say N here unless you know what you are doing. 953 954config PAGE_OFFSET 955 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 956 default "0xc0000000" 957 958config KERNEL_START_BOOL 959 bool "Set custom kernel base address" 960 depends on ADVANCED_OPTIONS 961 help 962 This option allows you to set the kernel virtual address at which 963 the kernel will be loaded. Normally this should match PAGE_OFFSET 964 however there are times (like kdump) that one might not want them 965 to be the same. 966 967 Say N here unless you know what you are doing. 968 969config KERNEL_START 970 hex "Virtual address of kernel base" if KERNEL_START_BOOL 971 default PAGE_OFFSET if PAGE_OFFSET_BOOL 972 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL 973 default "0xc0000000" 974 975config PHYSICAL_START_BOOL 976 bool "Set physical address where the kernel is loaded" 977 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 978 help 979 This gives the physical address where the kernel is loaded. 980 981 Say N here unless you know what you are doing. 982 983config PHYSICAL_START 984 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 985 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL 986 default "0x00000000" 987 988config PHYSICAL_ALIGN 989 hex 990 default "0x04000000" if FSL_BOOKE 991 help 992 This value puts the alignment restrictions on physical address 993 where kernel is loaded and run from. Kernel is compiled for an 994 address which meets above alignment restriction. 995 996config TASK_SIZE_BOOL 997 bool "Set custom user task size" 998 depends on ADVANCED_OPTIONS 999 help 1000 This option allows you to set the amount of virtual address space 1001 allocated to user tasks. This can be useful in optimizing the 1002 virtual memory layout of the system. 1003 1004 Say N here unless you know what you are doing. 1005 1006config TASK_SIZE 1007 hex "Size of user task space" if TASK_SIZE_BOOL 1008 default "0x80000000" if PPC_8xx 1009 default "0xc0000000" 1010 1011config CONSISTENT_SIZE_BOOL 1012 bool "Set custom consistent memory pool size" 1013 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 1014 help 1015 This option allows you to set the size of the 1016 consistent memory pool. This pool of virtual memory 1017 is used to make consistent memory allocations. 1018 1019config CONSISTENT_SIZE 1020 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 1021 default "0x00200000" if NOT_COHERENT_CACHE 1022 1023config PIN_TLB 1024 bool "Pinned Kernel TLBs (860 ONLY)" 1025 depends on ADVANCED_OPTIONS && 8xx 1026endmenu 1027 1028if PPC64 1029config RELOCATABLE 1030 bool "Build a relocatable kernel" 1031 depends on !COMPILE_TEST 1032 select NONSTATIC_KERNEL 1033 help 1034 This builds a kernel image that is capable of running anywhere 1035 in the RMA (real memory area) at any 16k-aligned base address. 1036 The kernel is linked as a position-independent executable (PIE) 1037 and contains dynamic relocations which are processed early 1038 in the bootup process. 1039 1040 One use is for the kexec on panic case where the recovery kernel 1041 must live at a different physical address than the primary 1042 kernel. 1043 1044# This value must have zeroes in the bottom 60 bits otherwise lots will break 1045config PAGE_OFFSET 1046 hex 1047 default "0xc000000000000000" 1048config KERNEL_START 1049 hex 1050 default "0xc000000000000000" 1051config PHYSICAL_START 1052 hex 1053 default "0x00000000" 1054endif 1055 1056config ARCH_RANDOM 1057 def_bool n 1058 1059source "net/Kconfig" 1060 1061source "drivers/Kconfig" 1062 1063source "fs/Kconfig" 1064 1065source "arch/powerpc/sysdev/qe_lib/Kconfig" 1066 1067source "lib/Kconfig" 1068 1069source "arch/powerpc/Kconfig.debug" 1070 1071source "security/Kconfig" 1072 1073config KEYS_COMPAT 1074 bool 1075 depends on COMPAT && KEYS 1076 default y 1077 1078source "crypto/Kconfig" 1079 1080config PPC_LIB_RHEAP 1081 bool 1082 1083source "arch/powerpc/kvm/Kconfig" 1084