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