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 PPC_PM_NEEDS_RTC_LIB 15 bool 16 select RTC_LIB 17 default y if PM 18 19config PPC32 20 bool 21 default y if !PPC64 22 23config 64BIT 24 bool 25 default y if PPC64 26 27config PPC_MERGE 28 def_bool y 29 30config MMU 31 bool 32 default y 33 34config GENERIC_HARDIRQS 35 bool 36 default y 37 38config IRQ_PER_CPU 39 bool 40 default y 41 42config RWSEM_GENERIC_SPINLOCK 43 bool 44 45config RWSEM_XCHGADD_ALGORITHM 46 bool 47 default y 48 49config ARCH_HAS_ILOG2_U32 50 bool 51 default y 52 53config ARCH_HAS_ILOG2_U64 54 bool 55 default y if 64BIT 56 57config GENERIC_HWEIGHT 58 bool 59 default y 60 61config GENERIC_CALIBRATE_DELAY 62 bool 63 default y 64 65config GENERIC_FIND_NEXT_BIT 66 bool 67 default y 68 69config PPC 70 bool 71 default y 72 73config EARLY_PRINTK 74 bool 75 default y 76 77config COMPAT 78 bool 79 default y if PPC64 80 81config SYSVIPC_COMPAT 82 bool 83 depends on COMPAT && SYSVIPC 84 default y 85 86# All PPC32s use generic nvram driver through ppc_md 87config GENERIC_NVRAM 88 bool 89 default y if PPC32 90 91config SCHED_NO_NO_OMIT_FRAME_POINTER 92 bool 93 default y 94 95config ARCH_MAY_HAVE_PC_FDC 96 bool 97 default !PPC_PSERIES || PCI 98 99config PPC_OF 100 def_bool y 101 102config PPC_UDBG_16550 103 bool 104 default n 105 106config GENERIC_TBSYNC 107 bool 108 default y if PPC32 && SMP 109 default n 110 111config AUDIT_ARCH 112 bool 113 default y 114 115config GENERIC_BUG 116 bool 117 default y 118 depends on BUG 119 120# 121# Powerpc uses the slab allocator to manage its ptes and the 122# page structs of ptes are used for splitting the page table 123# lock for configurations supporting more than SPLIT_PTLOCK_CPUS. 124# 125# In that special configuration the page structs of slabs are modified. 126# This setting disables the selection of SLUB as a slab allocator. 127# 128config ARCH_USES_SLAB_PAGE_STRUCT 129 bool 130 default y 131 depends on SPLIT_PTLOCK_CPUS <= NR_CPUS 132 133config DEFAULT_UIMAGE 134 bool 135 help 136 Used to allow a board to specify it wants a uImage built by default 137 default n 138 139menu "Processor support" 140choice 141 prompt "Processor Type" 142 depends on PPC32 143 default 6xx 144 145config CLASSIC32 146 bool "52xx/6xx/7xx/74xx" 147 select PPC_FPU 148 select 6xx 149 help 150 There are four families of PowerPC chips supported. The more common 151 types (601, 603, 604, 740, 750, 7400), the Motorola embedded 152 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC 153 embedded versions (403 and 405) and the high end 64 bit Power 154 processors (POWER 3, POWER4, and IBM PPC970 also known as G5). 155 156 This option is the catch-all for 6xx types, including some of the 157 embedded versions. Unless there is see an option for the specific 158 chip family you are using, you want this option. 159 160 You do not want this if you are building a kernel for a 64 bit 161 IBM RS/6000 or an Apple G5, choose 6xx. 162 163 If unsure, select this option 164 165 Note that the kernel runs in 32-bit mode even on 64-bit chips. 166 167config PPC_82xx 168 bool "Freescale 82xx" 169 select 6xx 170 select PPC_FPU 171 172config PPC_83xx 173 bool "Freescale 83xx" 174 select 6xx 175 select FSL_SOC 176 select 83xx 177 select PPC_FPU 178 select WANT_DEVICE_TREE 179 180config PPC_85xx 181 bool "Freescale 85xx" 182 select E500 183 select FSL_SOC 184 select 85xx 185 select WANT_DEVICE_TREE 186 187config PPC_86xx 188 bool "Freescale 86xx" 189 select 6xx 190 select FSL_SOC 191 select FSL_PCIE 192 select PPC_FPU 193 select ALTIVEC 194 help 195 The Freescale E600 SoCs have 74xx cores. 196 197config PPC_8xx 198 bool "Freescale 8xx" 199 select FSL_SOC 200 select 8xx 201 202config 40x 203 bool "AMCC 40x" 204 select PPC_DCR_NATIVE 205 206config 44x 207 bool "AMCC 44x" 208 select PPC_DCR_NATIVE 209 210config E200 211 bool "Freescale e200" 212 213endchoice 214 215config POWER4_ONLY 216 bool "Optimize for POWER4" 217 depends on PPC64 218 default n 219 ---help--- 220 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. 221 The resulting binary will not work on POWER3 or RS64 processors 222 when compiled with binutils 2.15 or later. 223 224config POWER3 225 bool 226 depends on PPC64 227 default y if !POWER4_ONLY 228 229config POWER4 230 depends on PPC64 231 def_bool y 232 233config 6xx 234 bool 235 236# this is temp to handle compat with arch=ppc 237config 8xx 238 bool 239 240# this is temp to handle compat with arch=ppc 241config 83xx 242 bool 243 244# this is temp to handle compat with arch=ppc 245config 85xx 246 bool 247 248config E500 249 bool 250 251config PPC_FPU 252 bool 253 default y if PPC64 254 255config PPC_DCR_NATIVE 256 bool 257 default n 258 259config PPC_DCR_MMIO 260 bool 261 default n 262 263config PPC_DCR 264 bool 265 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO 266 default y 267 268config PPC_OF_PLATFORM_PCI 269 bool 270 depends on PPC64 # not supported on 32 bits yet 271 default n 272 273config BOOKE 274 bool 275 depends on E200 || E500 276 default y 277 278config FSL_BOOKE 279 bool 280 depends on E200 || E500 281 default y 282 283config PTE_64BIT 284 bool 285 depends on 44x || E500 286 default y if 44x 287 default y if E500 && PHYS_64BIT 288 289config PHYS_64BIT 290 bool 'Large physical address support' if E500 291 depends on 44x || E500 292 select RESOURCES_64BIT 293 default y if 44x 294 ---help--- 295 This option enables kernel support for larger than 32-bit physical 296 addresses. This features is not be available on all e500 cores. 297 298 If in doubt, say N here. 299 300config ALTIVEC 301 bool "AltiVec Support" 302 depends on CLASSIC32 || POWER4 303 ---help--- 304 This option enables kernel support for the Altivec extensions to the 305 PowerPC processor. The kernel currently supports saving and restoring 306 altivec registers, and turning on the 'altivec enable' bit so user 307 processes can execute altivec instructions. 308 309 This option is only usefully if you have a processor that supports 310 altivec (G4, otherwise known as 74xx series), but does not have 311 any affect on a non-altivec cpu (it does, however add code to the 312 kernel). 313 314 If in doubt, say Y here. 315 316config SPE 317 bool "SPE Support" 318 depends on E200 || E500 319 default y 320 ---help--- 321 This option enables kernel support for the Signal Processing 322 Extensions (SPE) to the PowerPC processor. The kernel currently 323 supports saving and restoring SPE registers, and turning on the 324 'spe enable' bit so user processes can execute SPE instructions. 325 326 This option is only useful if you have a processor that supports 327 SPE (e500, otherwise known as 85xx series), but does not have any 328 effect on a non-spe cpu (it does, however add code to the kernel). 329 330 If in doubt, say Y here. 331 332config PPC_STD_MMU 333 bool 334 depends on 6xx || POWER3 || POWER4 || PPC64 335 default y 336 337config PPC_STD_MMU_32 338 def_bool y 339 depends on PPC_STD_MMU && PPC32 340 341config VIRT_CPU_ACCOUNTING 342 bool "Deterministic task and CPU time accounting" 343 depends on PPC64 344 default y 345 help 346 Select this option to enable more accurate task and CPU time 347 accounting. This is done by reading a CPU counter on each 348 kernel entry and exit and on transitions within the kernel 349 between system, softirq and hardirq state, so there is a 350 small performance impact. This also enables accounting of 351 stolen time on logically-partitioned systems running on 352 IBM POWER5-based machines. 353 354 If in doubt, say Y here. 355 356config SMP 357 depends on PPC_STD_MMU 358 bool "Symmetric multi-processing support" 359 ---help--- 360 This enables support for systems with more than one CPU. If you have 361 a system with only one CPU, say N. If you have a system with more 362 than one CPU, say Y. Note that the kernel does not currently 363 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 364 since they have inadequate hardware support for multiprocessor 365 operation. 366 367 If you say N here, the kernel will run on single and multiprocessor 368 machines, but will use only one CPU of a multiprocessor machine. If 369 you say Y here, the kernel will run on single-processor machines. 370 On a single-processor machine, the kernel will run faster if you say 371 N here. 372 373 If you don't know what to do here, say N. 374 375config NR_CPUS 376 int "Maximum number of CPUs (2-128)" 377 range 2 128 378 depends on SMP 379 default "32" if PPC64 380 default "4" 381 382config NOT_COHERENT_CACHE 383 bool 384 depends on 4xx || 8xx || E200 385 default y 386endmenu 387 388source "init/Kconfig" 389 390source "arch/powerpc/platforms/Kconfig" 391 392menu "Kernel options" 393 394config HIGHMEM 395 bool "High memory support" 396 depends on PPC32 397 398source kernel/Kconfig.hz 399source kernel/Kconfig.preempt 400source "fs/Kconfig.binfmt" 401 402# We optimistically allocate largepages from the VM, so make the limit 403# large enough (16MB). This badly named config option is actually 404# max order + 1 405config FORCE_MAX_ZONEORDER 406 int 407 depends on PPC64 408 default "9" if PPC_64K_PAGES 409 default "13" 410 411config MATH_EMULATION 412 bool "Math emulation" 413 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 414 ---help--- 415 Some PowerPC chips designed for embedded applications do not have 416 a floating-point unit and therefore do not implement the 417 floating-point instructions in the PowerPC instruction set. If you 418 say Y here, the kernel will include code to emulate a floating-point 419 unit, which will allow programs that use floating-point 420 instructions to run. 421 422config IOMMU_VMERGE 423 bool "Enable IOMMU virtual merging (EXPERIMENTAL)" 424 depends on EXPERIMENTAL && PPC64 425 default n 426 help 427 Cause IO segments sent to a device for DMA to be merged virtually 428 by the IOMMU when they happen to have been allocated contiguously. 429 This doesn't add pressure to the IOMMU allocator. However, some 430 drivers don't support getting large merged segments coming back 431 from *_map_sg(). Say Y if you know the drivers you are using are 432 properly handling this case. 433 434config HOTPLUG_CPU 435 bool "Support for enabling/disabling CPUs" 436 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) 437 ---help--- 438 Say Y here to be able to disable and re-enable individual 439 CPUs at runtime on SMP machines. 440 441 Say N if you are unsure. 442 443config ARCH_ENABLE_MEMORY_HOTPLUG 444 def_bool y 445 446config KEXEC 447 bool "kexec system call (EXPERIMENTAL)" 448 depends on PPC_MULTIPLATFORM && EXPERIMENTAL 449 help 450 kexec is a system call that implements the ability to shutdown your 451 current kernel, and to start another kernel. It is like a reboot 452 but it is independent of the system firmware. And like a reboot 453 you can start any kernel with it, not just Linux. 454 455 The name comes from the similarity to the exec system call. 456 457 It is an ongoing process to be certain the hardware in a machine 458 is properly shutdown, so do not be surprised if this code does not 459 initially work for you. It may help to enable device hotplugging 460 support. As of this writing the exact hardware interface is 461 strongly in flux, so no good recommendation can be made. 462 463config CRASH_DUMP 464 bool "Build a kdump crash kernel (EXPERIMENTAL)" 465 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL 466 help 467 Build a kernel suitable for use as a kdump capture kernel. 468 The kernel will be linked at a different address than normal, and 469 so can only be used for Kdump. 470 471 Don't change this unless you know what you are doing. 472 473config PPCBUG_NVRAM 474 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC 475 default y if PPC_PREP 476 477config IRQ_ALL_CPUS 478 bool "Distribute interrupts on all CPUs by default" 479 depends on SMP && !MV64360 480 help 481 This option gives the kernel permission to distribute IRQs across 482 multiple CPUs. Saying N here will route all IRQs to the first 483 CPU. Generally saying Y is safe, although some problems have been 484 reported with SMP Power Macintoshes with this option enabled. 485 486config NUMA 487 bool "NUMA support" 488 depends on PPC64 489 default y if SMP && PPC_PSERIES 490 491config NODES_SHIFT 492 int 493 default "4" 494 depends on NEED_MULTIPLE_NODES 495 496config ARCH_SELECT_MEMORY_MODEL 497 def_bool y 498 depends on PPC64 499 500config ARCH_FLATMEM_ENABLE 501 def_bool y 502 depends on (PPC64 && !NUMA) || PPC32 503 504config ARCH_SPARSEMEM_ENABLE 505 def_bool y 506 depends on PPC64 507 508config ARCH_SPARSEMEM_DEFAULT 509 def_bool y 510 depends on (SMP && PPC_PSERIES) || PPC_PS3 511 512config ARCH_POPULATES_NODE_MAP 513 def_bool y 514 515source "mm/Kconfig" 516 517config ARCH_MEMORY_PROBE 518 def_bool y 519 depends on MEMORY_HOTPLUG 520 521# Some NUMA nodes have memory ranges that span 522# other nodes. Even though a pfn is valid and 523# between a node's start and end pfns, it may not 524# reside on that node. See memmap_init_zone() 525# for details. 526config NODES_SPAN_OTHER_NODES 527 def_bool y 528 depends on NEED_MULTIPLE_NODES 529 530config PPC_64K_PAGES 531 bool "64k page size" 532 depends on PPC64 533 help 534 This option changes the kernel logical page size to 64k. On machines 535 without processor support for 64k pages, the kernel will simulate 536 them by loading each individual 4k page on demand transparently, 537 while on hardware with such support, it will be used to map 538 normal application pages. 539 540config SCHED_SMT 541 bool "SMT (Hyperthreading) scheduler support" 542 depends on PPC64 && SMP 543 help 544 SMT scheduler support improves the CPU scheduler's decision making 545 when dealing with POWER5 cpus at a cost of slightly increased 546 overhead in some places. If unsure say N here. 547 548config PROC_DEVICETREE 549 bool "Support for device tree in /proc" 550 depends on PROC_FS 551 help 552 This option adds a device-tree directory under /proc which contains 553 an image of the device tree that the kernel copies from Open 554 Firmware or other boot firmware. If unsure, say Y here. 555 556config CMDLINE_BOOL 557 bool "Default bootloader kernel arguments" 558 559config CMDLINE 560 string "Initial kernel command string" 561 depends on CMDLINE_BOOL 562 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 563 help 564 On some platforms, there is currently no way for the boot loader to 565 pass arguments to the kernel. For these platforms, you can supply 566 some command-line options at build time by entering them here. In 567 most cases you will need to specify the root device here. 568 569if !44x || BROKEN 570source kernel/power/Kconfig 571endif 572 573config SECCOMP 574 bool "Enable seccomp to safely compute untrusted bytecode" 575 depends on PROC_FS 576 default y 577 help 578 This kernel feature is useful for number crunching applications 579 that may need to compute untrusted bytecode during their 580 execution. By using pipes or other transports made available to 581 the process as file descriptors supporting the read/write 582 syscalls, it's possible to isolate those applications in 583 their own address space using seccomp. Once seccomp is 584 enabled via /proc/<pid>/seccomp, it cannot be disabled 585 and the task is only allowed to execute a few safe syscalls 586 defined by each seccomp mode. 587 588 If unsure, say Y. Only embedded should say N here. 589 590config WANT_DEVICE_TREE 591 bool 592 default n 593 594config DEVICE_TREE 595 string "Static device tree source file" 596 depends on WANT_DEVICE_TREE 597 help 598 This specifies the device tree source (.dts) file to be 599 compiled and included when building the bootwrapper. If a 600 relative filename is given, then it will be relative to 601 arch/powerpc/boot/dts. If you are not using the bootwrapper, 602 or do not need to build a dts into the bootwrapper, this 603 field is ignored. 604 605 For example, this is required when building a cuImage target 606 for an older U-Boot, which cannot pass a device tree itself. 607 Such a kernel will not work with a newer U-Boot that tries to 608 pass a device tree (unless you tell it not to). If your U-Boot 609 does not mention a device tree in "help bootm", then use the 610 cuImage target and specify a device tree here. Otherwise, use 611 the uImage target and leave this field blank. 612 613endmenu 614 615config ISA_DMA_API 616 bool 617 default y 618 619menu "Bus options" 620 621config ISA 622 bool "Support for ISA-bus hardware" 623 depends on PPC_PREP || PPC_CHRP 624 select PPC_I8259 625 help 626 Find out whether you have ISA slots on your motherboard. ISA is the 627 name of a bus system, i.e. the way the CPU talks to the other stuff 628 inside your box. If you have an Apple machine, say N here; if you 629 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If 630 you have an embedded board, consult your board documentation. 631 632config ZONE_DMA 633 bool 634 default y 635 636config GENERIC_ISA_DMA 637 bool 638 depends on PPC64 || POWER4 || 6xx && !CPM2 639 default y 640 641config PPC_INDIRECT_PCI 642 bool 643 depends on PCI 644 default y if 40x || 44x 645 default n 646 647config PPC_INDIRECT_PCI_BE 648 bool 649 depends PPC_INDIRECT_PCI 650 default n 651 652config EISA 653 bool 654 655config SBUS 656 bool 657 658config FSL_SOC 659 bool 660 661config FSL_PCIE 662 bool 663 depends on PPC_86xx 664 665# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 666config MCA 667 bool 668 669config PCI 670 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \ 671 || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \ 672 || MPC7448HPC2 || PPC_PS3 673 default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \ 674 && !PPC_85xx && !PPC_86xx 675 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS 676 default PCI_QSPAN if !4xx && !CPM2 && 8xx 677 help 678 Find out whether your system includes a PCI bus. PCI is the name of 679 a bus system, i.e. the way the CPU talks to the other stuff inside 680 your box. If you say Y here, the kernel will include drivers and 681 infrastructure code to support PCI bus devices. 682 683config PCI_DOMAINS 684 bool 685 default PCI 686 687config PCI_QSPAN 688 bool "QSpan PCI" 689 depends on !4xx && !CPM2 && 8xx 690 select PPC_I8259 691 help 692 Say Y here if you have a system based on a Motorola 8xx-series 693 embedded processor with a QSPAN PCI interface, otherwise say N. 694 695config PCI_8260 696 bool 697 depends on PCI && 8260 698 select PPC_INDIRECT_PCI 699 default y 700 701config 8260_PCI9 702 bool "Enable workaround for MPC826x erratum PCI 9" 703 depends on PCI_8260 && !ADS8272 704 default y 705 706choice 707 prompt "IDMA channel for PCI 9 workaround" 708 depends on 8260_PCI9 709 710config 8260_PCI9_IDMA1 711 bool "IDMA1" 712 713config 8260_PCI9_IDMA2 714 bool "IDMA2" 715 716config 8260_PCI9_IDMA3 717 bool "IDMA3" 718 719config 8260_PCI9_IDMA4 720 bool "IDMA4" 721 722endchoice 723 724source "drivers/pci/pcie/Kconfig" 725 726source "drivers/pci/Kconfig" 727 728source "drivers/pcmcia/Kconfig" 729 730source "drivers/pci/hotplug/Kconfig" 731 732endmenu 733 734menu "Advanced setup" 735 depends on PPC32 736 737config ADVANCED_OPTIONS 738 bool "Prompt for advanced kernel configuration options" 739 help 740 This option will enable prompting for a variety of advanced kernel 741 configuration options. These options can cause the kernel to not 742 work if they are set incorrectly, but can be used to optimize certain 743 aspects of kernel memory management. 744 745 Unless you know what you are doing, say N here. 746 747comment "Default settings for advanced configuration options are used" 748 depends on !ADVANCED_OPTIONS 749 750config HIGHMEM_START_BOOL 751 bool "Set high memory pool address" 752 depends on ADVANCED_OPTIONS && HIGHMEM 753 help 754 This option allows you to set the base address of the kernel virtual 755 area used to map high memory pages. This can be useful in 756 optimizing the layout of kernel virtual memory. 757 758 Say N here unless you know what you are doing. 759 760config HIGHMEM_START 761 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL 762 default "0xfe000000" 763 764config LOWMEM_SIZE_BOOL 765 bool "Set maximum low memory" 766 depends on ADVANCED_OPTIONS 767 help 768 This option allows you to set the maximum amount of memory which 769 will be used as "low memory", that is, memory which the kernel can 770 access directly, without having to set up a kernel virtual mapping. 771 This can be useful in optimizing the layout of kernel virtual 772 memory. 773 774 Say N here unless you know what you are doing. 775 776config LOWMEM_SIZE 777 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 778 default "0x30000000" 779 780config KERNEL_START_BOOL 781 bool "Set custom kernel base address" 782 depends on ADVANCED_OPTIONS 783 help 784 This option allows you to set the kernel virtual address at which 785 the kernel will map low memory (the kernel image will be linked at 786 this address). This can be useful in optimizing the virtual memory 787 layout of the system. 788 789 Say N here unless you know what you are doing. 790 791config KERNEL_START 792 hex "Virtual address of kernel base" if KERNEL_START_BOOL 793 default "0xc0000000" 794 795config TASK_SIZE_BOOL 796 bool "Set custom user task size" 797 depends on ADVANCED_OPTIONS 798 help 799 This option allows you to set the amount of virtual address space 800 allocated to user tasks. This can be useful in optimizing the 801 virtual memory layout of the system. 802 803 Say N here unless you know what you are doing. 804 805config TASK_SIZE 806 hex "Size of user task space" if TASK_SIZE_BOOL 807 default "0x80000000" 808 809config CONSISTENT_START_BOOL 810 bool "Set custom consistent memory pool address" 811 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 812 help 813 This option allows you to set the base virtual address 814 of the consistent memory pool. This pool of virtual 815 memory is used to make consistent memory allocations. 816 817config CONSISTENT_START 818 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL 819 default "0xff100000" if NOT_COHERENT_CACHE 820 821config CONSISTENT_SIZE_BOOL 822 bool "Set custom consistent memory pool size" 823 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 824 help 825 This option allows you to set the size of the 826 consistent memory pool. This pool of virtual memory 827 is used to make consistent memory allocations. 828 829config CONSISTENT_SIZE 830 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 831 default "0x00200000" if NOT_COHERENT_CACHE 832 833config BOOT_LOAD_BOOL 834 bool "Set the boot link/load address" 835 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM 836 help 837 This option allows you to set the initial load address of the zImage 838 or zImage.initrd file. This can be useful if you are on a board 839 which has a small amount of memory. 840 841 Say N here unless you know what you are doing. 842 843config BOOT_LOAD 844 hex "Link/load address for booting" if BOOT_LOAD_BOOL 845 default "0x00400000" if 40x || 8xx || 8260 846 default "0x01000000" if 44x 847 default "0x00800000" 848 849config PIN_TLB 850 bool "Pinned Kernel TLBs (860 ONLY)" 851 depends on ADVANCED_OPTIONS && 8xx 852endmenu 853 854if PPC64 855config KERNEL_START 856 hex 857 default "0xc000000000000000" 858endif 859 860source "net/Kconfig" 861 862source "drivers/Kconfig" 863 864source "fs/Kconfig" 865 866# XXX source "arch/ppc/8xx_io/Kconfig" 867 868# XXX source "arch/ppc/8260_io/Kconfig" 869 870source "arch/powerpc/sysdev/qe_lib/Kconfig" 871 872source "lib/Kconfig" 873 874menu "Instrumentation Support" 875 depends on EXPERIMENTAL 876 877source "arch/powerpc/oprofile/Kconfig" 878 879config KPROBES 880 bool "Kprobes (EXPERIMENTAL)" 881 depends on !BOOKE && !4xx && KALLSYMS && EXPERIMENTAL && MODULES 882 help 883 Kprobes allows you to trap at almost any kernel address and 884 execute a callback function. register_kprobe() establishes 885 a probepoint and specifies the callback. Kprobes is useful 886 for kernel debugging, non-intrusive instrumentation and testing. 887 If in doubt, say "N". 888endmenu 889 890source "arch/powerpc/Kconfig.debug" 891 892source "security/Kconfig" 893 894config KEYS_COMPAT 895 bool 896 depends on COMPAT && KEYS 897 default y 898 899source "crypto/Kconfig" 900