1# For a description of the syntax of this configuration file, 2# see Documentation/kbuild/kconfig-language.txt. 3# 4 5mainmenu "Linux/PowerPC Kernel Configuration" 6 7config PPC64 8 bool "64-bit kernel" 9 default n 10 help 11 This option selects whether a 32-bit or a 64-bit kernel 12 will be built. 13 14config PPC32 15 bool 16 default y if !PPC64 17 18config 64BIT 19 bool 20 default y if PPC64 21 22config PPC_MERGE 23 def_bool y 24 25config MMU 26 bool 27 default y 28 29config GENERIC_HARDIRQS 30 bool 31 default y 32 33config IRQ_PER_CPU 34 bool 35 default y 36 37config RWSEM_GENERIC_SPINLOCK 38 bool 39 40config RWSEM_XCHGADD_ALGORITHM 41 bool 42 default y 43 44config GENERIC_HWEIGHT 45 bool 46 default y 47 48config GENERIC_CALIBRATE_DELAY 49 bool 50 default y 51 52config GENERIC_FIND_NEXT_BIT 53 bool 54 default y 55 56config PPC 57 bool 58 default y 59 60config EARLY_PRINTK 61 bool 62 default y 63 64config COMPAT 65 bool 66 default y if PPC64 67 68config SYSVIPC_COMPAT 69 bool 70 depends on COMPAT && SYSVIPC 71 default y 72 73# All PPC32s use generic nvram driver through ppc_md 74config GENERIC_NVRAM 75 bool 76 default y if PPC32 77 78config SCHED_NO_NO_OMIT_FRAME_POINTER 79 bool 80 default y 81 82config ARCH_MAY_HAVE_PC_FDC 83 bool 84 default y 85 86config PPC_OF 87 def_bool y 88 89config PPC_UDBG_16550 90 bool 91 default n 92 93config GENERIC_TBSYNC 94 bool 95 default y if PPC32 && SMP 96 default n 97 98config DEFAULT_UIMAGE 99 bool 100 help 101 Used to allow a board to specify it wants a uImage built by default 102 default n 103 104menu "Processor support" 105choice 106 prompt "Processor Type" 107 depends on PPC32 108 default 6xx 109 110config CLASSIC32 111 bool "6xx/7xx/74xx" 112 select PPC_FPU 113 select 6xx 114 help 115 There are four families of PowerPC chips supported. The more common 116 types (601, 603, 604, 740, 750, 7400), the Motorola embedded 117 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC 118 embedded versions (403 and 405) and the high end 64 bit Power 119 processors (POWER 3, POWER4, and IBM PPC970 also known as G5). 120 121 Unless you are building a kernel for one of the embedded processor 122 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx. 123 Note that the kernel runs in 32-bit mode even on 64-bit chips. 124 125config PPC_52xx 126 bool "Freescale 52xx" 127 select 6xx 128 select PPC_FPU 129 130config PPC_82xx 131 bool "Freescale 82xx" 132 select 6xx 133 select PPC_FPU 134 135config PPC_83xx 136 bool "Freescale 83xx" 137 select 6xx 138 select FSL_SOC 139 select 83xx 140 select PPC_FPU 141 142config PPC_85xx 143 bool "Freescale 85xx" 144 select E500 145 select FSL_SOC 146 select 85xx 147 148config PPC_86xx 149 bool "Freescale 86xx" 150 select 6xx 151 select FSL_SOC 152 select PPC_FPU 153 select ALTIVEC 154 help 155 The Freescale E600 SoCs have 74xx cores. 156 157config 40x 158 bool "AMCC 40x" 159 160config 44x 161 bool "AMCC 44x" 162 163config 8xx 164 bool "Freescale 8xx" 165 166config E200 167 bool "Freescale e200" 168 169endchoice 170 171config POWER4_ONLY 172 bool "Optimize for POWER4" 173 depends on PPC64 174 default n 175 ---help--- 176 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. 177 The resulting binary will not work on POWER3 or RS64 processors 178 when compiled with binutils 2.15 or later. 179 180config POWER3 181 bool 182 depends on PPC64 183 default y if !POWER4_ONLY 184 185config POWER4 186 depends on PPC64 187 def_bool y 188 189config 6xx 190 bool 191 192# this is temp to handle compat with arch=ppc 193config 83xx 194 bool 195 196# this is temp to handle compat with arch=ppc 197config 85xx 198 bool 199 200config E500 201 bool 202 203config PPC_FPU 204 bool 205 default y if PPC64 206 207config BOOKE 208 bool 209 depends on E200 || E500 210 default y 211 212config FSL_BOOKE 213 bool 214 depends on E200 || E500 215 default y 216 217config PTE_64BIT 218 bool 219 depends on 44x || E500 220 default y if 44x 221 default y if E500 && PHYS_64BIT 222 223config PHYS_64BIT 224 bool 'Large physical address support' if E500 225 depends on 44x || E500 226 default y if 44x 227 ---help--- 228 This option enables kernel support for larger than 32-bit physical 229 addresses. This features is not be available on all e500 cores. 230 231 If in doubt, say N here. 232 233config ALTIVEC 234 bool "AltiVec Support" 235 depends on CLASSIC32 || POWER4 236 ---help--- 237 This option enables kernel support for the Altivec extensions to the 238 PowerPC processor. The kernel currently supports saving and restoring 239 altivec registers, and turning on the 'altivec enable' bit so user 240 processes can execute altivec instructions. 241 242 This option is only usefully if you have a processor that supports 243 altivec (G4, otherwise known as 74xx series), but does not have 244 any affect on a non-altivec cpu (it does, however add code to the 245 kernel). 246 247 If in doubt, say Y here. 248 249config SPE 250 bool "SPE Support" 251 depends on E200 || E500 252 default y 253 ---help--- 254 This option enables kernel support for the Signal Processing 255 Extensions (SPE) to the PowerPC processor. The kernel currently 256 supports saving and restoring SPE registers, and turning on the 257 'spe enable' bit so user processes can execute SPE instructions. 258 259 This option is only useful if you have a processor that supports 260 SPE (e500, otherwise known as 85xx series), but does not have any 261 effect on a non-spe cpu (it does, however add code to the kernel). 262 263 If in doubt, say Y here. 264 265config PPC_STD_MMU 266 bool 267 depends on 6xx || POWER3 || POWER4 || PPC64 268 default y 269 270config PPC_STD_MMU_32 271 def_bool y 272 depends on PPC_STD_MMU && PPC32 273 274config VIRT_CPU_ACCOUNTING 275 bool "Deterministic task and CPU time accounting" 276 depends on PPC64 277 default y 278 help 279 Select this option to enable more accurate task and CPU time 280 accounting. This is done by reading a CPU counter on each 281 kernel entry and exit and on transitions within the kernel 282 between system, softirq and hardirq state, so there is a 283 small performance impact. This also enables accounting of 284 stolen time on logically-partitioned systems running on 285 IBM POWER5-based machines. 286 287 If in doubt, say Y here. 288 289config SMP 290 depends on PPC_STD_MMU 291 bool "Symmetric multi-processing support" 292 ---help--- 293 This enables support for systems with more than one CPU. If you have 294 a system with only one CPU, say N. If you have a system with more 295 than one CPU, say Y. Note that the kernel does not currently 296 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 297 since they have inadequate hardware support for multiprocessor 298 operation. 299 300 If you say N here, the kernel will run on single and multiprocessor 301 machines, but will use only one CPU of a multiprocessor machine. If 302 you say Y here, the kernel will run on single-processor machines. 303 On a single-processor machine, the kernel will run faster if you say 304 N here. 305 306 If you don't know what to do here, say N. 307 308config NR_CPUS 309 int "Maximum number of CPUs (2-128)" 310 range 2 128 311 depends on SMP 312 default "32" if PPC64 313 default "4" 314 315config NOT_COHERENT_CACHE 316 bool 317 depends on 4xx || 8xx || E200 318 default y 319endmenu 320 321source "init/Kconfig" 322 323menu "Platform support" 324 depends on PPC64 || CLASSIC32 325 326choice 327 prompt "Machine type" 328 default PPC_MULTIPLATFORM 329 330config PPC_MULTIPLATFORM 331 bool "Generic desktop/server/laptop" 332 help 333 Select this option if configuring for an IBM pSeries or 334 RS/6000 machine, an Apple machine, or a PReP, CHRP, 335 Maple or Cell-based machine. 336 337config PPC_ISERIES 338 bool "IBM Legacy iSeries" 339 depends on PPC64 340 341config EMBEDDED6xx 342 bool "Embedded 6xx/7xx/7xxx-based board" 343 depends on PPC32 && (BROKEN||BROKEN_ON_SMP) 344 345config APUS 346 bool "Amiga-APUS" 347 depends on PPC32 && BROKEN 348 help 349 Select APUS if configuring for a PowerUP Amiga. 350 More information is available at: 351 <http://linux-apus.sourceforge.net/>. 352endchoice 353 354config PPC_PSERIES 355 depends on PPC_MULTIPLATFORM && PPC64 356 bool "IBM pSeries & new (POWER5-based) iSeries" 357 select PPC_I8259 358 select PPC_RTAS 359 select RTAS_ERROR_LOGGING 360 select PPC_UDBG_16550 361 default y 362 363config PPC_CHRP 364 bool "Common Hardware Reference Platform (CHRP) based machines" 365 depends on PPC_MULTIPLATFORM && PPC32 366 select PPC_I8259 367 select PPC_INDIRECT_PCI 368 select PPC_RTAS 369 select PPC_MPC106 370 select PPC_UDBG_16550 371 default y 372 373config PPC_PMAC 374 bool "Apple PowerMac based machines" 375 depends on PPC_MULTIPLATFORM 376 select PPC_INDIRECT_PCI if PPC32 377 select PPC_MPC106 if PPC32 378 default y 379 380config PPC_PMAC64 381 bool 382 depends on PPC_PMAC && POWER4 383 select U3_DART 384 select MPIC_BROKEN_U3 385 select GENERIC_TBSYNC 386 select PPC_970_NAP 387 default y 388 389config PPC_PREP 390 bool "PowerPC Reference Platform (PReP) based machines" 391 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN 392 select PPC_I8259 393 select PPC_INDIRECT_PCI 394 select PPC_UDBG_16550 395 default y 396 397config PPC_MAPLE 398 depends on PPC_MULTIPLATFORM && PPC64 399 bool "Maple 970FX Evaluation Board" 400 select U3_DART 401 select MPIC_BROKEN_U3 402 select GENERIC_TBSYNC 403 select PPC_UDBG_16550 404 select PPC_970_NAP 405 default n 406 help 407 This option enables support for the Maple 970FX Evaluation Board. 408 For more informations, refer to <http://www.970eval.com> 409 410config PPC_CELL 411 bool 412 default n 413 414config PPC_CELL_NATIVE 415 bool 416 select PPC_CELL 417 default n 418 419config PPC_IBM_CELL_BLADE 420 bool "IBM Cell Blade" 421 depends on PPC_MULTIPLATFORM && PPC64 422 select PPC_CELL_NATIVE 423 select PPC_RTAS 424 select MMIO_NVRAM 425 select PPC_UDBG_16550 426 select UDBG_RTAS_CONSOLE 427 428config UDBG_RTAS_CONSOLE 429 bool 430 default n 431 432config XICS 433 depends on PPC_PSERIES 434 bool 435 default y 436 437config U3_DART 438 bool 439 depends on PPC_MULTIPLATFORM && PPC64 440 default n 441 442config MPIC 443 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP \ 444 || MPC7448HPC2 445 bool 446 default y 447 448config PPC_RTAS 449 bool 450 default n 451 452config RTAS_ERROR_LOGGING 453 bool 454 depends on PPC_RTAS 455 default n 456 457config RTAS_PROC 458 bool "Proc interface to RTAS" 459 depends on PPC_RTAS 460 default y 461 462config RTAS_FLASH 463 tristate "Firmware flash interface" 464 depends on PPC64 && RTAS_PROC 465 466config MMIO_NVRAM 467 bool 468 default n 469 470config MPIC_BROKEN_U3 471 bool 472 depends on PPC_MAPLE 473 default y 474 475config IBMVIO 476 depends on PPC_PSERIES || PPC_ISERIES 477 bool 478 default y 479 480config IBMEBUS 481 depends on PPC_PSERIES 482 bool "Support for GX bus based adapters" 483 help 484 Bus device driver for GX bus based adapters. 485 486config PPC_MPC106 487 bool 488 default n 489 490config PPC_970_NAP 491 bool 492 default n 493 494source "drivers/cpufreq/Kconfig" 495 496config CPU_FREQ_PMAC 497 bool "Support for Apple PowerBooks" 498 depends on CPU_FREQ && ADB_PMU && PPC32 499 select CPU_FREQ_TABLE 500 help 501 This adds support for frequency switching on Apple PowerBooks, 502 this currently includes some models of iBook & Titanium 503 PowerBook. 504 505config CPU_FREQ_PMAC64 506 bool "Support for some Apple G5s" 507 depends on CPU_FREQ && PPC64 508 select CPU_FREQ_TABLE 509 help 510 This adds support for frequency switching on Apple iMac G5, 511 and some of the more recent desktop G5 machines as well. 512 513config PPC601_SYNC_FIX 514 bool "Workarounds for PPC601 bugs" 515 depends on 6xx && (PPC_PREP || PPC_PMAC) 516 help 517 Some versions of the PPC601 (the first PowerPC chip) have bugs which 518 mean that extra synchronization instructions are required near 519 certain instructions, typically those that make major changes to the 520 CPU state. These extra instructions reduce performance slightly. 521 If you say N here, these extra instructions will not be included, 522 resulting in a kernel which will run faster but may not run at all 523 on some systems with the PPC601 chip. 524 525 If in doubt, say Y here. 526 527config TAU 528 bool "On-chip CPU temperature sensor support" 529 depends on 6xx 530 help 531 G3 and G4 processors have an on-chip temperature sensor called the 532 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die 533 temperature within 2-4 degrees Celsius. This option shows the current 534 on-die temperature in /proc/cpuinfo if the cpu supports it. 535 536 Unfortunately, on some chip revisions, this sensor is very inaccurate 537 and in many cases, does not work at all, so don't assume the cpu 538 temp is actually what /proc/cpuinfo says it is. 539 540config TAU_INT 541 bool "Interrupt driven TAU driver (DANGEROUS)" 542 depends on TAU 543 ---help--- 544 The TAU supports an interrupt driven mode which causes an interrupt 545 whenever the temperature goes out of range. This is the fastest way 546 to get notified the temp has exceeded a range. With this option off, 547 a timer is used to re-check the temperature periodically. 548 549 However, on some cpus it appears that the TAU interrupt hardware 550 is buggy and can cause a situation which would lead unexplained hard 551 lockups. 552 553 Unless you are extending the TAU driver, or enjoy kernel/hardware 554 debugging, leave this option off. 555 556config TAU_AVERAGE 557 bool "Average high and low temp" 558 depends on TAU 559 ---help--- 560 The TAU hardware can compare the temperature to an upper and lower 561 bound. The default behavior is to show both the upper and lower 562 bound in /proc/cpuinfo. If the range is large, the temperature is 563 either changing a lot, or the TAU hardware is broken (likely on some 564 G4's). If the range is small (around 4 degrees), the temperature is 565 relatively stable. If you say Y here, a single temperature value, 566 halfway between the upper and lower bounds, will be reported in 567 /proc/cpuinfo. 568 569 If in doubt, say N here. 570 571config PPC_TODC 572 depends on EMBEDDED6xx 573 bool "Generic Time-of-day Clock (TODC) support" 574 ---help--- 575 This adds support for many TODC/RTC chips. 576 577endmenu 578 579source arch/powerpc/platforms/embedded6xx/Kconfig 580source arch/powerpc/platforms/4xx/Kconfig 581source arch/powerpc/platforms/83xx/Kconfig 582source arch/powerpc/platforms/85xx/Kconfig 583source arch/powerpc/platforms/86xx/Kconfig 584source arch/powerpc/platforms/8xx/Kconfig 585source arch/powerpc/platforms/cell/Kconfig 586 587menu "Kernel options" 588 589config HIGHMEM 590 bool "High memory support" 591 depends on PPC32 592 593source kernel/Kconfig.hz 594source kernel/Kconfig.preempt 595source "fs/Kconfig.binfmt" 596 597# We optimistically allocate largepages from the VM, so make the limit 598# large enough (16MB). This badly named config option is actually 599# max order + 1 600config FORCE_MAX_ZONEORDER 601 int 602 depends on PPC64 603 default "9" if PPC_64K_PAGES 604 default "13" 605 606config MATH_EMULATION 607 bool "Math emulation" 608 depends on 4xx || 8xx || E200 || E500 609 ---help--- 610 Some PowerPC chips designed for embedded applications do not have 611 a floating-point unit and therefore do not implement the 612 floating-point instructions in the PowerPC instruction set. If you 613 say Y here, the kernel will include code to emulate a floating-point 614 unit, which will allow programs that use floating-point 615 instructions to run. 616 617config IOMMU_VMERGE 618 bool "Enable IOMMU virtual merging (EXPERIMENTAL)" 619 depends on EXPERIMENTAL && PPC64 620 default n 621 help 622 Cause IO segments sent to a device for DMA to be merged virtually 623 by the IOMMU when they happen to have been allocated contiguously. 624 This doesn't add pressure to the IOMMU allocator. However, some 625 drivers don't support getting large merged segments coming back 626 from *_map_sg(). Say Y if you know the drivers you are using are 627 properly handling this case. 628 629config HOTPLUG_CPU 630 bool "Support for enabling/disabling CPUs" 631 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) 632 ---help--- 633 Say Y here to be able to disable and re-enable individual 634 CPUs at runtime on SMP machines. 635 636 Say N if you are unsure. 637 638config ARCH_ENABLE_MEMORY_HOTPLUG 639 def_bool y 640 641config KEXEC 642 bool "kexec system call (EXPERIMENTAL)" 643 depends on PPC_MULTIPLATFORM && EXPERIMENTAL 644 help 645 kexec is a system call that implements the ability to shutdown your 646 current kernel, and to start another kernel. It is like a reboot 647 but it is independent of the system firmware. And like a reboot 648 you can start any kernel with it, not just Linux. 649 650 The name comes from the similarity to the exec system call. 651 652 It is an ongoing process to be certain the hardware in a machine 653 is properly shutdown, so do not be surprised if this code does not 654 initially work for you. It may help to enable device hotplugging 655 support. As of this writing the exact hardware interface is 656 strongly in flux, so no good recommendation can be made. 657 658config CRASH_DUMP 659 bool "Build a kdump crash kernel (EXPERIMENTAL)" 660 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL 661 help 662 Build a kernel suitable for use as a kdump capture kernel. 663 The kernel will be linked at a different address than normal, and 664 so can only be used for Kdump. 665 666 Don't change this unless you know what you are doing. 667 668config EMBEDDEDBOOT 669 bool 670 depends on 8xx || 8260 671 default y 672 673config PC_KEYBOARD 674 bool "PC PS/2 style Keyboard" 675 depends on 4xx || CPM2 676 677config PPCBUG_NVRAM 678 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC 679 default y if PPC_PREP 680 681config IRQ_ALL_CPUS 682 bool "Distribute interrupts on all CPUs by default" 683 depends on SMP && !MV64360 684 help 685 This option gives the kernel permission to distribute IRQs across 686 multiple CPUs. Saying N here will route all IRQs to the first 687 CPU. Generally saying Y is safe, although some problems have been 688 reported with SMP Power Macintoshes with this option enabled. 689 690source "arch/powerpc/platforms/pseries/Kconfig" 691 692config NUMA 693 bool "NUMA support" 694 depends on PPC64 695 default y if SMP && PPC_PSERIES 696 697config NODES_SHIFT 698 int 699 default "4" 700 depends on NEED_MULTIPLE_NODES 701 702config ARCH_SELECT_MEMORY_MODEL 703 def_bool y 704 depends on PPC64 705 706config ARCH_FLATMEM_ENABLE 707 def_bool y 708 depends on (PPC64 && !NUMA) || PPC32 709 710config ARCH_SPARSEMEM_ENABLE 711 def_bool y 712 depends on PPC64 713 714config ARCH_SPARSEMEM_DEFAULT 715 def_bool y 716 depends on SMP && PPC_PSERIES 717 718source "mm/Kconfig" 719 720config HAVE_ARCH_EARLY_PFN_TO_NID 721 def_bool y 722 depends on NEED_MULTIPLE_NODES 723 724config ARCH_MEMORY_PROBE 725 def_bool y 726 depends on MEMORY_HOTPLUG 727 728config PPC_64K_PAGES 729 bool "64k page size" 730 depends on PPC64 731 help 732 This option changes the kernel logical page size to 64k. On machines 733 without processor support for 64k pages, the kernel will simulate 734 them by loading each individual 4k page on demand transparently, 735 while on hardware with such support, it will be used to map 736 normal application pages. 737 738config SCHED_SMT 739 bool "SMT (Hyperthreading) scheduler support" 740 depends on PPC64 && SMP 741 help 742 SMT scheduler support improves the CPU scheduler's decision making 743 when dealing with POWER5 cpus at a cost of slightly increased 744 overhead in some places. If unsure say N here. 745 746config PROC_DEVICETREE 747 bool "Support for device tree in /proc" 748 depends on PROC_FS 749 help 750 This option adds a device-tree directory under /proc which contains 751 an image of the device tree that the kernel copies from Open 752 Firmware or other boot firmware. If unsure, say Y here. 753 754source "arch/powerpc/platforms/prep/Kconfig" 755 756config CMDLINE_BOOL 757 bool "Default bootloader kernel arguments" 758 depends on !PPC_ISERIES 759 760config CMDLINE 761 string "Initial kernel command string" 762 depends on CMDLINE_BOOL 763 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 764 help 765 On some platforms, there is currently no way for the boot loader to 766 pass arguments to the kernel. For these platforms, you can supply 767 some command-line options at build time by entering them here. In 768 most cases you will need to specify the root device here. 769 770if !44x || BROKEN 771source kernel/power/Kconfig 772endif 773 774config SECCOMP 775 bool "Enable seccomp to safely compute untrusted bytecode" 776 depends on PROC_FS 777 default y 778 help 779 This kernel feature is useful for number crunching applications 780 that may need to compute untrusted bytecode during their 781 execution. By using pipes or other transports made available to 782 the process as file descriptors supporting the read/write 783 syscalls, it's possible to isolate those applications in 784 their own address space using seccomp. Once seccomp is 785 enabled via /proc/<pid>/seccomp, it cannot be disabled 786 and the task is only allowed to execute a few safe syscalls 787 defined by each seccomp mode. 788 789 If unsure, say Y. Only embedded should say N here. 790 791endmenu 792 793config ISA_DMA_API 794 bool 795 default y 796 797menu "Bus options" 798 799config ISA 800 bool "Support for ISA-bus hardware" 801 depends on PPC_PREP || PPC_CHRP 802 select PPC_I8259 803 help 804 Find out whether you have ISA slots on your motherboard. ISA is the 805 name of a bus system, i.e. the way the CPU talks to the other stuff 806 inside your box. If you have an Apple machine, say N here; if you 807 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If 808 you have an embedded board, consult your board documentation. 809 810config GENERIC_ISA_DMA 811 bool 812 depends on PPC64 || POWER4 || 6xx && !CPM2 813 default y 814 815config PPC_I8259 816 bool 817 default n 818 819config PPC_INDIRECT_PCI 820 bool 821 depends on PCI 822 default y if 40x || 44x 823 default n 824 825config EISA 826 bool 827 828config SBUS 829 bool 830 831config FSL_SOC 832 bool 833 834# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 835config MCA 836 bool 837 838config PCI 839 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) \ 840 || MPC7448HPC2 841 default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx && !PPC_85xx && !PPC_86xx 842 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS 843 default PCI_QSPAN if !4xx && !CPM2 && 8xx 844 help 845 Find out whether your system includes a PCI bus. PCI is the name of 846 a bus system, i.e. the way the CPU talks to the other stuff inside 847 your box. If you say Y here, the kernel will include drivers and 848 infrastructure code to support PCI bus devices. 849 850config PCI_DOMAINS 851 bool 852 default PCI 853 854config PCI_QSPAN 855 bool "QSpan PCI" 856 depends on !4xx && !CPM2 && 8xx 857 select PPC_I8259 858 help 859 Say Y here if you have a system based on a Motorola 8xx-series 860 embedded processor with a QSPAN PCI interface, otherwise say N. 861 862config PCI_8260 863 bool 864 depends on PCI && 8260 865 select PPC_INDIRECT_PCI 866 default y 867 868config 8260_PCI9 869 bool "Enable workaround for MPC826x erratum PCI 9" 870 depends on PCI_8260 && !ADS8272 871 default y 872 873choice 874 prompt "IDMA channel for PCI 9 workaround" 875 depends on 8260_PCI9 876 877config 8260_PCI9_IDMA1 878 bool "IDMA1" 879 880config 8260_PCI9_IDMA2 881 bool "IDMA2" 882 883config 8260_PCI9_IDMA3 884 bool "IDMA3" 885 886config 8260_PCI9_IDMA4 887 bool "IDMA4" 888 889endchoice 890 891source "drivers/pci/pcie/Kconfig" 892 893source "drivers/pci/Kconfig" 894 895source "drivers/pcmcia/Kconfig" 896 897source "drivers/pci/hotplug/Kconfig" 898 899endmenu 900 901menu "Advanced setup" 902 depends on PPC32 903 904config ADVANCED_OPTIONS 905 bool "Prompt for advanced kernel configuration options" 906 help 907 This option will enable prompting for a variety of advanced kernel 908 configuration options. These options can cause the kernel to not 909 work if they are set incorrectly, but can be used to optimize certain 910 aspects of kernel memory management. 911 912 Unless you know what you are doing, say N here. 913 914comment "Default settings for advanced configuration options are used" 915 depends on !ADVANCED_OPTIONS 916 917config HIGHMEM_START_BOOL 918 bool "Set high memory pool address" 919 depends on ADVANCED_OPTIONS && HIGHMEM 920 help 921 This option allows you to set the base address of the kernel virtual 922 area used to map high memory pages. This can be useful in 923 optimizing the layout of kernel virtual memory. 924 925 Say N here unless you know what you are doing. 926 927config HIGHMEM_START 928 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL 929 default "0xfe000000" 930 931config LOWMEM_SIZE_BOOL 932 bool "Set maximum low memory" 933 depends on ADVANCED_OPTIONS 934 help 935 This option allows you to set the maximum amount of memory which 936 will be used as "low memory", that is, memory which the kernel can 937 access directly, without having to set up a kernel virtual mapping. 938 This can be useful in optimizing the layout of kernel virtual 939 memory. 940 941 Say N here unless you know what you are doing. 942 943config LOWMEM_SIZE 944 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 945 default "0x30000000" 946 947config KERNEL_START_BOOL 948 bool "Set custom kernel base address" 949 depends on ADVANCED_OPTIONS 950 help 951 This option allows you to set the kernel virtual address at which 952 the kernel will map low memory (the kernel image will be linked at 953 this address). This can be useful in optimizing the virtual memory 954 layout of the system. 955 956 Say N here unless you know what you are doing. 957 958config KERNEL_START 959 hex "Virtual address of kernel base" if KERNEL_START_BOOL 960 default "0xc0000000" 961 962config TASK_SIZE_BOOL 963 bool "Set custom user task size" 964 depends on ADVANCED_OPTIONS 965 help 966 This option allows you to set the amount of virtual address space 967 allocated to user tasks. This can be useful in optimizing the 968 virtual memory layout of the system. 969 970 Say N here unless you know what you are doing. 971 972config TASK_SIZE 973 hex "Size of user task space" if TASK_SIZE_BOOL 974 default "0x80000000" 975 976config CONSISTENT_START_BOOL 977 bool "Set custom consistent memory pool address" 978 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 979 help 980 This option allows you to set the base virtual address 981 of the the consistent memory pool. This pool of virtual 982 memory is used to make consistent memory allocations. 983 984config CONSISTENT_START 985 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL 986 default "0xff100000" if NOT_COHERENT_CACHE 987 988config CONSISTENT_SIZE_BOOL 989 bool "Set custom consistent memory pool size" 990 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 991 help 992 This option allows you to set the size of the the 993 consistent memory pool. This pool of virtual memory 994 is used to make consistent memory allocations. 995 996config CONSISTENT_SIZE 997 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 998 default "0x00200000" if NOT_COHERENT_CACHE 999 1000config BOOT_LOAD_BOOL 1001 bool "Set the boot link/load address" 1002 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM 1003 help 1004 This option allows you to set the initial load address of the zImage 1005 or zImage.initrd file. This can be useful if you are on a board 1006 which has a small amount of memory. 1007 1008 Say N here unless you know what you are doing. 1009 1010config BOOT_LOAD 1011 hex "Link/load address for booting" if BOOT_LOAD_BOOL 1012 default "0x00400000" if 40x || 8xx || 8260 1013 default "0x01000000" if 44x 1014 default "0x00800000" 1015 1016config PIN_TLB 1017 bool "Pinned Kernel TLBs (860 ONLY)" 1018 depends on ADVANCED_OPTIONS && 8xx 1019endmenu 1020 1021if PPC64 1022config KERNEL_START 1023 hex 1024 default "0xc000000000000000" 1025endif 1026 1027source "net/Kconfig" 1028 1029source "drivers/Kconfig" 1030 1031source "fs/Kconfig" 1032 1033# XXX source "arch/ppc/8xx_io/Kconfig" 1034 1035# XXX source "arch/ppc/8260_io/Kconfig" 1036 1037source "arch/powerpc/platforms/iseries/Kconfig" 1038 1039source "lib/Kconfig" 1040 1041menu "Instrumentation Support" 1042 depends on EXPERIMENTAL 1043 1044source "arch/powerpc/oprofile/Kconfig" 1045 1046config KPROBES 1047 bool "Kprobes (EXPERIMENTAL)" 1048 depends on PPC64 && EXPERIMENTAL && MODULES 1049 help 1050 Kprobes allows you to trap at almost any kernel address and 1051 execute a callback function. register_kprobe() establishes 1052 a probepoint and specifies the callback. Kprobes is useful 1053 for kernel debugging, non-intrusive instrumentation and testing. 1054 If in doubt, say "N". 1055endmenu 1056 1057source "arch/powerpc/Kconfig.debug" 1058 1059source "security/Kconfig" 1060 1061config KEYS_COMPAT 1062 bool 1063 depends on COMPAT && KEYS 1064 default y 1065 1066source "crypto/Kconfig" 1067