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 RWSEM_GENERIC_SPINLOCK 34 bool 35 36config RWSEM_XCHGADD_ALGORITHM 37 bool 38 default y 39 40config GENERIC_CALIBRATE_DELAY 41 bool 42 default y 43 44config PPC 45 bool 46 default y 47 48config EARLY_PRINTK 49 bool 50 default y if PPC64 51 52config COMPAT 53 bool 54 default y if PPC64 55 56config SYSVIPC_COMPAT 57 bool 58 depends on COMPAT && SYSVIPC 59 default y 60 61# All PPC32s use generic nvram driver through ppc_md 62config GENERIC_NVRAM 63 bool 64 default y if PPC32 65 66config SCHED_NO_NO_OMIT_FRAME_POINTER 67 bool 68 default y 69 70config ARCH_MAY_HAVE_PC_FDC 71 bool 72 default y 73 74menu "Processor support" 75choice 76 prompt "Processor Type" 77 depends on PPC32 78 default 6xx 79 80config 6xx 81 bool "6xx/7xx/74xx" 82 select PPC_FPU 83 help 84 There are four families of PowerPC chips supported. The more common 85 types (601, 603, 604, 740, 750, 7400), the Motorola embedded 86 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC 87 embedded versions (403 and 405) and the high end 64 bit Power 88 processors (POWER 3, POWER4, and IBM PPC970 also known as G5). 89 90 Unless you are building a kernel for one of the embedded processor 91 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx. 92 Note that the kernel runs in 32-bit mode even on 64-bit chips. 93 94config PPC_52xx 95 bool "Freescale 52xx" 96 97config PPC_82xx 98 bool "Freescale 82xx" 99 100config PPC_83xx 101 bool "Freescale 83xx" 102 103config 40x 104 bool "AMCC 40x" 105 106config 44x 107 bool "AMCC 44x" 108 109config 8xx 110 bool "Freescale 8xx" 111 112config E200 113 bool "Freescale e200" 114 115config E500 116 bool "Freescale e500" 117endchoice 118 119config POWER4_ONLY 120 bool "Optimize for POWER4" 121 depends on PPC64 122 default n 123 ---help--- 124 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. 125 The resulting binary will not work on POWER3 or RS64 processors 126 when compiled with binutils 2.15 or later. 127 128config POWER3 129 bool 130 depends on PPC64 131 default y if !POWER4_ONLY 132 133config POWER4 134 depends on PPC64 135 def_bool y 136 137config PPC_FPU 138 bool 139 default y if PPC64 140 141config BOOKE 142 bool 143 depends on E200 || E500 144 default y 145 146config FSL_BOOKE 147 bool 148 depends on E200 || E500 149 default y 150 151config PTE_64BIT 152 bool 153 depends on 44x || E500 154 default y if 44x 155 default y if E500 && PHYS_64BIT 156 157config PHYS_64BIT 158 bool 'Large physical address support' if E500 159 depends on 44x || E500 160 default y if 44x 161 ---help--- 162 This option enables kernel support for larger than 32-bit physical 163 addresses. This features is not be available on all e500 cores. 164 165 If in doubt, say N here. 166 167config ALTIVEC 168 bool "AltiVec Support" 169 depends on 6xx || POWER4 170 ---help--- 171 This option enables kernel support for the Altivec extensions to the 172 PowerPC processor. The kernel currently supports saving and restoring 173 altivec registers, and turning on the 'altivec enable' bit so user 174 processes can execute altivec instructions. 175 176 This option is only usefully if you have a processor that supports 177 altivec (G4, otherwise known as 74xx series), but does not have 178 any affect on a non-altivec cpu (it does, however add code to the 179 kernel). 180 181 If in doubt, say Y here. 182 183config SPE 184 bool "SPE Support" 185 depends on E200 || E500 186 ---help--- 187 This option enables kernel support for the Signal Processing 188 Extensions (SPE) to the PowerPC processor. The kernel currently 189 supports saving and restoring SPE registers, and turning on the 190 'spe enable' bit so user processes can execute SPE instructions. 191 192 This option is only useful if you have a processor that supports 193 SPE (e500, otherwise known as 85xx series), but does not have any 194 effect on a non-spe cpu (it does, however add code to the kernel). 195 196 If in doubt, say Y here. 197 198config PPC_STD_MMU 199 bool 200 depends on 6xx || POWER3 || POWER4 || PPC64 201 default y 202 203config PPC_STD_MMU_32 204 def_bool y 205 depends on PPC_STD_MMU && PPC32 206 207config SMP 208 depends on PPC_STD_MMU 209 bool "Symmetric multi-processing support" 210 ---help--- 211 This enables support for systems with more than one CPU. If you have 212 a system with only one CPU, say N. If you have a system with more 213 than one CPU, say Y. Note that the kernel does not currently 214 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 215 since they have inadequate hardware support for multiprocessor 216 operation. 217 218 If you say N here, the kernel will run on single and multiprocessor 219 machines, but will use only one CPU of a multiprocessor machine. If 220 you say Y here, the kernel will run on single-processor machines. 221 On a single-processor machine, the kernel will run faster if you say 222 N here. 223 224 If you don't know what to do here, say N. 225 226config NR_CPUS 227 int "Maximum number of CPUs (2-128)" 228 range 2 128 229 depends on SMP 230 default "32" if PPC64 231 default "4" 232 233config NOT_COHERENT_CACHE 234 bool 235 depends on 4xx || 8xx || E200 236 default y 237endmenu 238 239source "init/Kconfig" 240 241menu "Platform support" 242 depends on PPC64 || 6xx 243 244choice 245 prompt "Machine type" 246 default PPC_MULTIPLATFORM 247 248config PPC_MULTIPLATFORM 249 bool "Generic desktop/server/laptop" 250 help 251 Select this option if configuring for an IBM pSeries or 252 RS/6000 machine, an Apple machine, or a PReP, CHRP, 253 Maple or Cell-based machine. 254 255config PPC_ISERIES 256 bool "IBM Legacy iSeries" 257 depends on PPC64 258 259config EMBEDDED6xx 260 bool "Embedded 6xx/7xx/7xxx-based board" 261 depends on PPC32 && BROKEN 262 263config APUS 264 bool "Amiga-APUS" 265 depends on PPC32 && BROKEN 266 help 267 Select APUS if configuring for a PowerUP Amiga. 268 More information is available at: 269 <http://linux-apus.sourceforge.net/>. 270endchoice 271 272config PPC_PSERIES 273 depends on PPC_MULTIPLATFORM && PPC64 274 bool " IBM pSeries & new (POWER5-based) iSeries" 275 select PPC_I8259 276 select PPC_RTAS 277 select RTAS_ERROR_LOGGING 278 default y 279 280config PPC_CHRP 281 bool " Common Hardware Reference Platform (CHRP) based machines" 282 depends on PPC_MULTIPLATFORM && PPC32 283 select PPC_I8259 284 select PPC_INDIRECT_PCI 285 select PPC_RTAS 286 select PPC_MPC106 287 default y 288 289config PPC_PMAC 290 bool " Apple PowerMac based machines" 291 depends on PPC_MULTIPLATFORM 292 select PPC_INDIRECT_PCI if PPC32 293 select PPC_MPC106 if PPC32 294 default y 295 296config PPC_PMAC64 297 bool 298 depends on PPC_PMAC && POWER4 299 select U3_DART 300 select GENERIC_TBSYNC 301 default y 302 303config PPC_PREP 304 bool " PowerPC Reference Platform (PReP) based machines" 305 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN 306 select PPC_I8259 307 select PPC_INDIRECT_PCI 308 default y 309 310config PPC_MAPLE 311 depends on PPC_MULTIPLATFORM && PPC64 312 bool " Maple 970FX Evaluation Board" 313 select U3_DART 314 select MPIC_BROKEN_U3 315 select GENERIC_TBSYNC 316 default n 317 help 318 This option enables support for the Maple 970FX Evaluation Board. 319 For more informations, refer to <http://www.970eval.com> 320 321config PPC_CELL 322 bool " Cell Broadband Processor Architecture" 323 depends on PPC_MULTIPLATFORM && PPC64 324 select PPC_RTAS 325 select MMIO_NVRAM 326 327config PPC_OF 328 bool 329 depends on PPC_MULTIPLATFORM # for now 330 default y 331 332config XICS 333 depends on PPC_PSERIES 334 bool 335 default y 336 337config U3_DART 338 bool 339 depends on PPC_MULTIPLATFORM && PPC64 340 default n 341 342config MPIC 343 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP 344 bool 345 default y 346 347config PPC_RTAS 348 bool 349 default n 350 351config RTAS_ERROR_LOGGING 352 bool 353 depends on PPC_RTAS 354 default n 355 356config RTAS_PROC 357 bool "Proc interface to RTAS" 358 depends on PPC_RTAS 359 default y 360 361config RTAS_FLASH 362 tristate "Firmware flash interface" 363 depends on PPC64 && RTAS_PROC 364 365config MMIO_NVRAM 366 bool 367 default n 368 369config MPIC_BROKEN_U3 370 bool 371 depends on PPC_MAPLE 372 default y 373 374config CELL_IIC 375 depends on PPC_CELL 376 bool 377 default y 378 379config IBMVIO 380 depends on PPC_PSERIES || PPC_ISERIES 381 bool 382 default y 383 384config PPC_MPC106 385 bool 386 default n 387 388config GENERIC_TBSYNC 389 bool 390 default y if CONFIG_PPC32 && CONFIG_SMP 391 default n 392 393source "drivers/cpufreq/Kconfig" 394 395config CPU_FREQ_PMAC 396 bool "Support for Apple PowerBooks" 397 depends on CPU_FREQ && ADB_PMU && PPC32 398 select CPU_FREQ_TABLE 399 help 400 This adds support for frequency switching on Apple PowerBooks, 401 this currently includes some models of iBook & Titanium 402 PowerBook. 403 404config CPU_FREQ_PMAC64 405 bool "Support for some Apple G5s" 406 depends on CPU_FREQ && PMAC_SMU && PPC64 407 select CPU_FREQ_TABLE 408 help 409 This adds support for frequency switching on Apple iMac G5, 410 and some of the more recent desktop G5 machines as well. 411 412config PPC601_SYNC_FIX 413 bool "Workarounds for PPC601 bugs" 414 depends on 6xx && (PPC_PREP || PPC_PMAC) 415 help 416 Some versions of the PPC601 (the first PowerPC chip) have bugs which 417 mean that extra synchronization instructions are required near 418 certain instructions, typically those that make major changes to the 419 CPU state. These extra instructions reduce performance slightly. 420 If you say N here, these extra instructions will not be included, 421 resulting in a kernel which will run faster but may not run at all 422 on some systems with the PPC601 chip. 423 424 If in doubt, say Y here. 425 426config TAU 427 bool "Thermal Management Support" 428 depends on 6xx 429 help 430 G3 and G4 processors have an on-chip temperature sensor called the 431 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die 432 temperature within 2-4 degrees Celsius. This option shows the current 433 on-die temperature in /proc/cpuinfo if the cpu supports it. 434 435 Unfortunately, on some chip revisions, this sensor is very inaccurate 436 and in some cases, does not work at all, so don't assume the cpu 437 temp is actually what /proc/cpuinfo says it is. 438 439config TAU_INT 440 bool "Interrupt driven TAU driver (DANGEROUS)" 441 depends on TAU 442 ---help--- 443 The TAU supports an interrupt driven mode which causes an interrupt 444 whenever the temperature goes out of range. This is the fastest way 445 to get notified the temp has exceeded a range. With this option off, 446 a timer is used to re-check the temperature periodically. 447 448 However, on some cpus it appears that the TAU interrupt hardware 449 is buggy and can cause a situation which would lead unexplained hard 450 lockups. 451 452 Unless you are extending the TAU driver, or enjoy kernel/hardware 453 debugging, leave this option off. 454 455config TAU_AVERAGE 456 bool "Average high and low temp" 457 depends on TAU 458 ---help--- 459 The TAU hardware can compare the temperature to an upper and lower 460 bound. The default behavior is to show both the upper and lower 461 bound in /proc/cpuinfo. If the range is large, the temperature is 462 either changing a lot, or the TAU hardware is broken (likely on some 463 G4's). If the range is small (around 4 degrees), the temperature is 464 relatively stable. If you say Y here, a single temperature value, 465 halfway between the upper and lower bounds, will be reported in 466 /proc/cpuinfo. 467 468 If in doubt, say N here. 469endmenu 470 471source arch/powerpc/platforms/embedded6xx/Kconfig 472source arch/powerpc/platforms/4xx/Kconfig 473source arch/powerpc/platforms/85xx/Kconfig 474source arch/powerpc/platforms/8xx/Kconfig 475 476menu "Kernel options" 477 478config HIGHMEM 479 bool "High memory support" 480 depends on PPC32 481 482source kernel/Kconfig.hz 483source kernel/Kconfig.preempt 484source "fs/Kconfig.binfmt" 485 486# We optimistically allocate largepages from the VM, so make the limit 487# large enough (16MB). This badly named config option is actually 488# max order + 1 489config FORCE_MAX_ZONEORDER 490 int 491 depends on PPC64 492 default "9" if PPC_64K_PAGES 493 default "13" 494 495config MATH_EMULATION 496 bool "Math emulation" 497 depends on 4xx || 8xx || E200 || E500 498 ---help--- 499 Some PowerPC chips designed for embedded applications do not have 500 a floating-point unit and therefore do not implement the 501 floating-point instructions in the PowerPC instruction set. If you 502 say Y here, the kernel will include code to emulate a floating-point 503 unit, which will allow programs that use floating-point 504 instructions to run. 505 506config IOMMU_VMERGE 507 bool "Enable IOMMU virtual merging (EXPERIMENTAL)" 508 depends on EXPERIMENTAL && PPC64 509 default n 510 help 511 Cause IO segments sent to a device for DMA to be merged virtually 512 by the IOMMU when they happen to have been allocated contiguously. 513 This doesn't add pressure to the IOMMU allocator. However, some 514 drivers don't support getting large merged segments coming back 515 from *_map_sg(). Say Y if you know the drivers you are using are 516 properly handling this case. 517 518config HOTPLUG_CPU 519 bool "Support for enabling/disabling CPUs" 520 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) 521 ---help--- 522 Say Y here to be able to disable and re-enable individual 523 CPUs at runtime on SMP machines. 524 525 Say N if you are unsure. 526 527config KEXEC 528 bool "kexec system call (EXPERIMENTAL)" 529 depends on PPC_MULTIPLATFORM && EXPERIMENTAL 530 help 531 kexec is a system call that implements the ability to shutdown your 532 current kernel, and to start another kernel. It is like a reboot 533 but it is indepedent of the system firmware. And like a reboot 534 you can start any kernel with it, not just Linux. 535 536 The name comes from the similiarity to the exec system call. 537 538 It is an ongoing process to be certain the hardware in a machine 539 is properly shutdown, so do not be surprised if this code does not 540 initially work for you. It may help to enable device hotplugging 541 support. As of this writing the exact hardware interface is 542 strongly in flux, so no good recommendation can be made. 543 544config EMBEDDEDBOOT 545 bool 546 depends on 8xx || 8260 547 default y 548 549config PC_KEYBOARD 550 bool "PC PS/2 style Keyboard" 551 depends on 4xx || CPM2 552 553config PPCBUG_NVRAM 554 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC 555 default y if PPC_PREP 556 557config IRQ_ALL_CPUS 558 bool "Distribute interrupts on all CPUs by default" 559 depends on SMP && !MV64360 560 help 561 This option gives the kernel permission to distribute IRQs across 562 multiple CPUs. Saying N here will route all IRQs to the first 563 CPU. Generally saying Y is safe, although some problems have been 564 reported with SMP Power Macintoshes with this option enabled. 565 566source "arch/powerpc/platforms/pseries/Kconfig" 567 568config NUMA 569 bool "NUMA support" 570 depends on PPC64 571 default y if SMP && PPC_PSERIES 572 573config ARCH_SELECT_MEMORY_MODEL 574 def_bool y 575 depends on PPC64 576 577config ARCH_FLATMEM_ENABLE 578 def_bool y 579 depends on PPC64 && !NUMA 580 581config ARCH_SPARSEMEM_ENABLE 582 def_bool y 583 584config ARCH_SPARSEMEM_DEFAULT 585 def_bool y 586 depends on SMP && PPC_PSERIES 587 588source "mm/Kconfig" 589 590config HAVE_ARCH_EARLY_PFN_TO_NID 591 def_bool y 592 depends on NEED_MULTIPLE_NODES 593 594config ARCH_MEMORY_PROBE 595 def_bool y 596 depends on MEMORY_HOTPLUG 597 598config PPC_64K_PAGES 599 bool "64k page size" 600 depends on PPC64 601 help 602 This option changes the kernel logical page size to 64k. On machines 603 without processor support for 64k pages, the kernel will simulate 604 them by loading each individual 4k page on demand transparently, 605 while on hardware with such support, it will be used to map 606 normal application pages. 607 608config SCHED_SMT 609 bool "SMT (Hyperthreading) scheduler support" 610 depends on PPC64 && SMP 611 default off 612 help 613 SMT scheduler support improves the CPU scheduler's decision making 614 when dealing with POWER5 cpus at a cost of slightly increased 615 overhead in some places. If unsure say N here. 616 617config PROC_DEVICETREE 618 bool "Support for device tree in /proc" 619 depends on PROC_FS 620 help 621 This option adds a device-tree directory under /proc which contains 622 an image of the device tree that the kernel copies from Open 623 Firmware or other boot firmware. If unsure, say Y here. 624 625source "arch/powerpc/platforms/prep/Kconfig" 626 627config CMDLINE_BOOL 628 bool "Default bootloader kernel arguments" 629 depends on !PPC_ISERIES 630 631config CMDLINE 632 string "Initial kernel command string" 633 depends on CMDLINE_BOOL 634 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 635 help 636 On some platforms, there is currently no way for the boot loader to 637 pass arguments to the kernel. For these platforms, you can supply 638 some command-line options at build time by entering them here. In 639 most cases you will need to specify the root device here. 640 641if !44x || BROKEN 642source kernel/power/Kconfig 643endif 644 645config SECCOMP 646 bool "Enable seccomp to safely compute untrusted bytecode" 647 depends on PROC_FS 648 default y 649 help 650 This kernel feature is useful for number crunching applications 651 that may need to compute untrusted bytecode during their 652 execution. By using pipes or other transports made available to 653 the process as file descriptors supporting the read/write 654 syscalls, it's possible to isolate those applications in 655 their own address space using seccomp. Once seccomp is 656 enabled via /proc/<pid>/seccomp, it cannot be disabled 657 and the task is only allowed to execute a few safe syscalls 658 defined by each seccomp mode. 659 660 If unsure, say Y. Only embedded should say N here. 661 662endmenu 663 664config ISA_DMA_API 665 bool 666 default y 667 668menu "Bus options" 669 670config ISA 671 bool "Support for ISA-bus hardware" 672 depends on PPC_PREP || PPC_CHRP 673 select PPC_I8259 674 help 675 Find out whether you have ISA slots on your motherboard. ISA is the 676 name of a bus system, i.e. the way the CPU talks to the other stuff 677 inside your box. If you have an Apple machine, say N here; if you 678 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If 679 you have an embedded board, consult your board documentation. 680 681config GENERIC_ISA_DMA 682 bool 683 depends on PPC64 || POWER4 || 6xx && !CPM2 684 default y 685 686config PPC_I8259 687 bool 688 default y if 85xx 689 default n 690 691config PPC_INDIRECT_PCI 692 bool 693 depends on PCI 694 default y if 40x || 44x || 85xx || 83xx 695 default n 696 697config EISA 698 bool 699 700config SBUS 701 bool 702 703# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 704config MCA 705 bool 706 707config PCI 708 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) 709 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx 710 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS 711 default PCI_QSPAN if !4xx && !CPM2 && 8xx 712 help 713 Find out whether your system includes a PCI bus. PCI is the name of 714 a bus system, i.e. the way the CPU talks to the other stuff inside 715 your box. If you say Y here, the kernel will include drivers and 716 infrastructure code to support PCI bus devices. 717 718config PCI_DOMAINS 719 bool 720 default PCI 721 722config MPC83xx_PCI2 723 bool " Supprt for 2nd PCI host controller" 724 depends on PCI && MPC834x 725 default y if MPC834x_SYS 726 727config PCI_QSPAN 728 bool "QSpan PCI" 729 depends on !4xx && !CPM2 && 8xx 730 select PPC_I8259 731 help 732 Say Y here if you have a system based on a Motorola 8xx-series 733 embedded processor with a QSPAN PCI interface, otherwise say N. 734 735config PCI_8260 736 bool 737 depends on PCI && 8260 738 select PPC_INDIRECT_PCI 739 default y 740 741config 8260_PCI9 742 bool " Enable workaround for MPC826x erratum PCI 9" 743 depends on PCI_8260 && !ADS8272 744 default y 745 746choice 747 prompt " IDMA channel for PCI 9 workaround" 748 depends on 8260_PCI9 749 750config 8260_PCI9_IDMA1 751 bool "IDMA1" 752 753config 8260_PCI9_IDMA2 754 bool "IDMA2" 755 756config 8260_PCI9_IDMA3 757 bool "IDMA3" 758 759config 8260_PCI9_IDMA4 760 bool "IDMA4" 761 762endchoice 763 764source "drivers/pci/Kconfig" 765 766source "drivers/pcmcia/Kconfig" 767 768source "drivers/pci/hotplug/Kconfig" 769 770endmenu 771 772menu "Advanced setup" 773 depends on PPC32 774 775config ADVANCED_OPTIONS 776 bool "Prompt for advanced kernel configuration options" 777 help 778 This option will enable prompting for a variety of advanced kernel 779 configuration options. These options can cause the kernel to not 780 work if they are set incorrectly, but can be used to optimize certain 781 aspects of kernel memory management. 782 783 Unless you know what you are doing, say N here. 784 785comment "Default settings for advanced configuration options are used" 786 depends on !ADVANCED_OPTIONS 787 788config HIGHMEM_START_BOOL 789 bool "Set high memory pool address" 790 depends on ADVANCED_OPTIONS && HIGHMEM 791 help 792 This option allows you to set the base address of the kernel virtual 793 area used to map high memory pages. This can be useful in 794 optimizing the layout of kernel virtual memory. 795 796 Say N here unless you know what you are doing. 797 798config HIGHMEM_START 799 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL 800 default "0xfe000000" 801 802config LOWMEM_SIZE_BOOL 803 bool "Set maximum low memory" 804 depends on ADVANCED_OPTIONS 805 help 806 This option allows you to set the maximum amount of memory which 807 will be used as "low memory", that is, memory which the kernel can 808 access directly, without having to set up a kernel virtual mapping. 809 This can be useful in optimizing the layout of kernel virtual 810 memory. 811 812 Say N here unless you know what you are doing. 813 814config LOWMEM_SIZE 815 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 816 default "0x30000000" 817 818config KERNEL_START_BOOL 819 bool "Set custom kernel base address" 820 depends on ADVANCED_OPTIONS 821 help 822 This option allows you to set the kernel virtual address at which 823 the kernel will map low memory (the kernel image will be linked at 824 this address). This can be useful in optimizing the virtual memory 825 layout of the system. 826 827 Say N here unless you know what you are doing. 828 829config KERNEL_START 830 hex "Virtual address of kernel base" if KERNEL_START_BOOL 831 default "0xc0000000" 832 833config TASK_SIZE_BOOL 834 bool "Set custom user task size" 835 depends on ADVANCED_OPTIONS 836 help 837 This option allows you to set the amount of virtual address space 838 allocated to user tasks. This can be useful in optimizing the 839 virtual memory layout of the system. 840 841 Say N here unless you know what you are doing. 842 843config TASK_SIZE 844 hex "Size of user task space" if TASK_SIZE_BOOL 845 default "0x80000000" 846 847config CONSISTENT_START_BOOL 848 bool "Set custom consistent memory pool address" 849 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 850 help 851 This option allows you to set the base virtual address 852 of the the consistent memory pool. This pool of virtual 853 memory is used to make consistent memory allocations. 854 855config CONSISTENT_START 856 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL 857 default "0xff100000" if NOT_COHERENT_CACHE 858 859config CONSISTENT_SIZE_BOOL 860 bool "Set custom consistent memory pool size" 861 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 862 help 863 This option allows you to set the size of the the 864 consistent memory pool. This pool of virtual memory 865 is used to make consistent memory allocations. 866 867config CONSISTENT_SIZE 868 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 869 default "0x00200000" if NOT_COHERENT_CACHE 870 871config BOOT_LOAD_BOOL 872 bool "Set the boot link/load address" 873 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM 874 help 875 This option allows you to set the initial load address of the zImage 876 or zImage.initrd file. This can be useful if you are on a board 877 which has a small amount of memory. 878 879 Say N here unless you know what you are doing. 880 881config BOOT_LOAD 882 hex "Link/load address for booting" if BOOT_LOAD_BOOL 883 default "0x00400000" if 40x || 8xx || 8260 884 default "0x01000000" if 44x 885 default "0x00800000" 886 887config PIN_TLB 888 bool "Pinned Kernel TLBs (860 ONLY)" 889 depends on ADVANCED_OPTIONS && 8xx 890endmenu 891 892if PPC64 893config KERNEL_START 894 hex 895 default "0xc000000000000000" 896endif 897 898source "net/Kconfig" 899 900source "drivers/Kconfig" 901 902source "fs/Kconfig" 903 904# XXX source "arch/ppc/8xx_io/Kconfig" 905 906# XXX source "arch/ppc/8260_io/Kconfig" 907 908source "arch/powerpc/platforms/iseries/Kconfig" 909 910source "lib/Kconfig" 911 912menu "Instrumentation Support" 913 depends on EXPERIMENTAL 914 915source "arch/powerpc/oprofile/Kconfig" 916 917config KPROBES 918 bool "Kprobes (EXPERIMENTAL)" 919 depends on PPC64 920 help 921 Kprobes allows you to trap at almost any kernel address and 922 execute a callback function. register_kprobe() establishes 923 a probepoint and specifies the callback. Kprobes is useful 924 for kernel debugging, non-intrusive instrumentation and testing. 925 If in doubt, say "N". 926endmenu 927 928source "arch/powerpc/Kconfig.debug" 929 930source "security/Kconfig" 931 932config KEYS_COMPAT 933 bool 934 depends on COMPAT && KEYS 935 default y 936 937source "crypto/Kconfig" 938