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 UID16 30 bool 31 32config GENERIC_HARDIRQS 33 bool 34 default y 35 36config RWSEM_GENERIC_SPINLOCK 37 bool 38 39config RWSEM_XCHGADD_ALGORITHM 40 bool 41 default y 42 43config GENERIC_CALIBRATE_DELAY 44 bool 45 default y 46 47config PPC 48 bool 49 default y 50 51config EARLY_PRINTK 52 bool 53 default y if PPC64 54 55config COMPAT 56 bool 57 default y if PPC64 58 59config SYSVIPC_COMPAT 60 bool 61 depends on COMPAT && SYSVIPC 62 default y 63 64# All PPC32s use generic nvram driver through ppc_md 65config GENERIC_NVRAM 66 bool 67 default y if PPC32 68 69config SCHED_NO_NO_OMIT_FRAME_POINTER 70 bool 71 default y 72 73config ARCH_MAY_HAVE_PC_FDC 74 bool 75 default y 76 77menu "Processor support" 78choice 79 prompt "Processor Type" 80 depends on PPC32 81 default 6xx 82 83config 6xx 84 bool "6xx/7xx/74xx" 85 select PPC_FPU 86 help 87 There are four families of PowerPC chips supported. The more common 88 types (601, 603, 604, 740, 750, 7400), the Motorola embedded 89 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC 90 embedded versions (403 and 405) and the high end 64 bit Power 91 processors (POWER 3, POWER4, and IBM PPC970 also known as G5). 92 93 Unless you are building a kernel for one of the embedded processor 94 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx. 95 Note that the kernel runs in 32-bit mode even on 64-bit chips. 96 97config PPC_52xx 98 bool "Freescale 52xx" 99 100config PPC_82xx 101 bool "Freescale 82xx" 102 103config PPC_83xx 104 bool "Freescale 83xx" 105 106config 40x 107 bool "AMCC 40x" 108 109config 44x 110 bool "AMCC 44x" 111 112config 8xx 113 bool "Freescale 8xx" 114 115config E200 116 bool "Freescale e200" 117 118config E500 119 bool "Freescale e500" 120endchoice 121 122config POWER4_ONLY 123 bool "Optimize for POWER4" 124 depends on PPC64 125 default n 126 ---help--- 127 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. 128 The resulting binary will not work on POWER3 or RS64 processors 129 when compiled with binutils 2.15 or later. 130 131config POWER3 132 bool 133 depends on PPC64 134 default y if !POWER4_ONLY 135 136config POWER4 137 depends on PPC64 138 def_bool y 139 140config PPC_FPU 141 bool 142 default y if PPC64 143 144config BOOKE 145 bool 146 depends on E200 || E500 147 default y 148 149config FSL_BOOKE 150 bool 151 depends on E200 || E500 152 default y 153 154config PTE_64BIT 155 bool 156 depends on 44x || E500 157 default y if 44x 158 default y if E500 && PHYS_64BIT 159 160config PHYS_64BIT 161 bool 'Large physical address support' if E500 162 depends on 44x || E500 163 default y if 44x 164 ---help--- 165 This option enables kernel support for larger than 32-bit physical 166 addresses. This features is not be available on all e500 cores. 167 168 If in doubt, say N here. 169 170config ALTIVEC 171 bool "AltiVec Support" 172 depends on 6xx || POWER4 173 ---help--- 174 This option enables kernel support for the Altivec extensions to the 175 PowerPC processor. The kernel currently supports saving and restoring 176 altivec registers, and turning on the 'altivec enable' bit so user 177 processes can execute altivec instructions. 178 179 This option is only usefully if you have a processor that supports 180 altivec (G4, otherwise known as 74xx series), but does not have 181 any affect on a non-altivec cpu (it does, however add code to the 182 kernel). 183 184 If in doubt, say Y here. 185 186config SPE 187 bool "SPE Support" 188 depends on E200 || E500 189 ---help--- 190 This option enables kernel support for the Signal Processing 191 Extensions (SPE) to the PowerPC processor. The kernel currently 192 supports saving and restoring SPE registers, and turning on the 193 'spe enable' bit so user processes can execute SPE instructions. 194 195 This option is only useful if you have a processor that supports 196 SPE (e500, otherwise known as 85xx series), but does not have any 197 effect on a non-spe cpu (it does, however add code to the kernel). 198 199 If in doubt, say Y here. 200 201config PPC_STD_MMU 202 bool 203 depends on 6xx || POWER3 || POWER4 || PPC64 204 default y 205 206config PPC_STD_MMU_32 207 def_bool y 208 depends on PPC_STD_MMU && PPC32 209 210config SMP 211 depends on PPC_STD_MMU 212 bool "Symmetric multi-processing support" 213 ---help--- 214 This enables support for systems with more than one CPU. If you have 215 a system with only one CPU, say N. If you have a system with more 216 than one CPU, say Y. Note that the kernel does not currently 217 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors 218 since they have inadequate hardware support for multiprocessor 219 operation. 220 221 If you say N here, the kernel will run on single and multiprocessor 222 machines, but will use only one CPU of a multiprocessor machine. If 223 you say Y here, the kernel will run on single-processor machines. 224 On a single-processor machine, the kernel will run faster if you say 225 N here. 226 227 If you don't know what to do here, say N. 228 229config NR_CPUS 230 int "Maximum number of CPUs (2-32)" 231 range 2 128 232 depends on SMP 233 default "32" if PPC64 234 default "4" 235 236config NOT_COHERENT_CACHE 237 bool 238 depends on 4xx || 8xx || E200 239 default y 240endmenu 241 242source "init/Kconfig" 243 244menu "Platform support" 245 depends on PPC64 || 6xx 246 247choice 248 prompt "Machine type" 249 default PPC_MULTIPLATFORM 250 251config PPC_MULTIPLATFORM 252 bool "Generic desktop/server/laptop" 253 help 254 Select this option if configuring for an IBM pSeries or 255 RS/6000 machine, an Apple machine, or a PReP, CHRP, 256 Maple or Cell-based machine. 257 258config PPC_ISERIES 259 bool "IBM Legacy iSeries" 260 depends on PPC64 261 262config EMBEDDED6xx 263 bool "Embedded 6xx/7xx/7xxx-based board" 264 depends on PPC32 265 266config APUS 267 bool "Amiga-APUS" 268 depends on PPC32 && BROKEN 269 help 270 Select APUS if configuring for a PowerUP Amiga. 271 More information is available at: 272 <http://linux-apus.sourceforge.net/>. 273endchoice 274 275config PPC_PSERIES 276 depends on PPC_MULTIPLATFORM && PPC64 277 bool " IBM pSeries & new (POWER5-based) iSeries" 278 select PPC_I8259 279 select PPC_RTAS 280 select RTAS_ERROR_LOGGING 281 default y 282 283config PPC_CHRP 284 bool " Common Hardware Reference Platform (CHRP) based machines" 285 depends on PPC_MULTIPLATFORM && PPC32 286 select PPC_I8259 287 select PPC_INDIRECT_PCI 288 select PPC_RTAS 289 select PPC_MPC106 290 default y 291 292config PPC_PMAC 293 bool " Apple PowerMac based machines" 294 depends on PPC_MULTIPLATFORM 295 select PPC_INDIRECT_PCI if PPC32 296 select PPC_MPC106 if PPC32 297 default y 298 299config PPC_PMAC64 300 bool 301 depends on PPC_PMAC && POWER4 302 select U3_DART 303 select GENERIC_TBSYNC 304 default y 305 306config PPC_PREP 307 bool " PowerPC Reference Platform (PReP) based machines" 308 depends on PPC_MULTIPLATFORM && PPC32 309 select PPC_I8259 310 select PPC_INDIRECT_PCI 311 default y 312 313config PPC_MAPLE 314 depends on PPC_MULTIPLATFORM && PPC64 315 bool " Maple 970FX Evaluation Board" 316 select U3_DART 317 select MPIC_BROKEN_U3 318 select GENERIC_TBSYNC 319 default n 320 help 321 This option enables support for the Maple 970FX Evaluation Board. 322 For more informations, refer to <http://www.970eval.com> 323 324config PPC_CELL 325 bool " Cell Broadband Processor Architecture" 326 depends on PPC_MULTIPLATFORM && PPC64 327 select PPC_RTAS 328 select MMIO_NVRAM 329 330config PPC_OF 331 bool 332 depends on PPC_MULTIPLATFORM # for now 333 default y 334 335config XICS 336 depends on PPC_PSERIES 337 bool 338 default y 339 340config U3_DART 341 bool 342 depends on PPC_MULTIPLATFORM && PPC64 343 default n 344 345config MPIC 346 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP 347 bool 348 default y 349 350config PPC_RTAS 351 bool 352 default n 353 354config RTAS_ERROR_LOGGING 355 bool 356 depends on PPC_RTAS 357 default n 358 359config RTAS_PROC 360 bool "Proc interface to RTAS" 361 depends on PPC_RTAS 362 default y 363 364config RTAS_FLASH 365 tristate "Firmware flash interface" 366 depends on PPC64 && RTAS_PROC 367 368config MMIO_NVRAM 369 bool 370 default n 371 372config MPIC_BROKEN_U3 373 bool 374 depends on PPC_MAPLE 375 default y 376 377config CELL_IIC 378 depends on PPC_CELL 379 bool 380 default y 381 382config IBMVIO 383 depends on PPC_PSERIES || PPC_ISERIES 384 bool 385 default y 386 387config PPC_MPC106 388 bool 389 default n 390 391config GENERIC_TBSYNC 392 bool 393 default y if CONFIG_PPC32 && CONFIG_SMP 394 default n 395 396source "drivers/cpufreq/Kconfig" 397 398config CPU_FREQ_PMAC 399 bool "Support for Apple PowerBooks" 400 depends on CPU_FREQ && ADB_PMU && PPC32 401 select CPU_FREQ_TABLE 402 help 403 This adds support for frequency switching on Apple PowerBooks, 404 this currently includes some models of iBook & Titanium 405 PowerBook. 406 407config PPC601_SYNC_FIX 408 bool "Workarounds for PPC601 bugs" 409 depends on 6xx && (PPC_PREP || PPC_PMAC) 410 help 411 Some versions of the PPC601 (the first PowerPC chip) have bugs which 412 mean that extra synchronization instructions are required near 413 certain instructions, typically those that make major changes to the 414 CPU state. These extra instructions reduce performance slightly. 415 If you say N here, these extra instructions will not be included, 416 resulting in a kernel which will run faster but may not run at all 417 on some systems with the PPC601 chip. 418 419 If in doubt, say Y here. 420 421config TAU 422 bool "Thermal Management Support" 423 depends on 6xx 424 help 425 G3 and G4 processors have an on-chip temperature sensor called the 426 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die 427 temperature within 2-4 degrees Celsius. This option shows the current 428 on-die temperature in /proc/cpuinfo if the cpu supports it. 429 430 Unfortunately, on some chip revisions, this sensor is very inaccurate 431 and in some cases, does not work at all, so don't assume the cpu 432 temp is actually what /proc/cpuinfo says it is. 433 434config TAU_INT 435 bool "Interrupt driven TAU driver (DANGEROUS)" 436 depends on TAU 437 ---help--- 438 The TAU supports an interrupt driven mode which causes an interrupt 439 whenever the temperature goes out of range. This is the fastest way 440 to get notified the temp has exceeded a range. With this option off, 441 a timer is used to re-check the temperature periodically. 442 443 However, on some cpus it appears that the TAU interrupt hardware 444 is buggy and can cause a situation which would lead unexplained hard 445 lockups. 446 447 Unless you are extending the TAU driver, or enjoy kernel/hardware 448 debugging, leave this option off. 449 450config TAU_AVERAGE 451 bool "Average high and low temp" 452 depends on TAU 453 ---help--- 454 The TAU hardware can compare the temperature to an upper and lower 455 bound. The default behavior is to show both the upper and lower 456 bound in /proc/cpuinfo. If the range is large, the temperature is 457 either changing a lot, or the TAU hardware is broken (likely on some 458 G4's). If the range is small (around 4 degrees), the temperature is 459 relatively stable. If you say Y here, a single temperature value, 460 halfway between the upper and lower bounds, will be reported in 461 /proc/cpuinfo. 462 463 If in doubt, say N here. 464endmenu 465 466source arch/powerpc/platforms/embedded6xx/Kconfig 467source arch/powerpc/platforms/4xx/Kconfig 468source arch/powerpc/platforms/85xx/Kconfig 469source arch/powerpc/platforms/8xx/Kconfig 470 471menu "Kernel options" 472 473config HIGHMEM 474 bool "High memory support" 475 depends on PPC32 476 477source kernel/Kconfig.hz 478source kernel/Kconfig.preempt 479source "fs/Kconfig.binfmt" 480 481# We optimistically allocate largepages from the VM, so make the limit 482# large enough (16MB). This badly named config option is actually 483# max order + 1 484config FORCE_MAX_ZONEORDER 485 int 486 depends on PPC64 487 default "13" 488 489config MATH_EMULATION 490 bool "Math emulation" 491 depends on 4xx || 8xx || E200 || E500 492 ---help--- 493 Some PowerPC chips designed for embedded applications do not have 494 a floating-point unit and therefore do not implement the 495 floating-point instructions in the PowerPC instruction set. If you 496 say Y here, the kernel will include code to emulate a floating-point 497 unit, which will allow programs that use floating-point 498 instructions to run. 499 500config IOMMU_VMERGE 501 bool "Enable IOMMU virtual merging (EXPERIMENTAL)" 502 depends on EXPERIMENTAL && PPC64 503 default n 504 help 505 Cause IO segments sent to a device for DMA to be merged virtually 506 by the IOMMU when they happen to have been allocated contiguously. 507 This doesn't add pressure to the IOMMU allocator. However, some 508 drivers don't support getting large merged segments coming back 509 from *_map_sg(). Say Y if you know the drivers you are using are 510 properly handling this case. 511 512config HOTPLUG_CPU 513 bool "Support for enabling/disabling CPUs" 514 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) 515 ---help--- 516 Say Y here to be able to disable and re-enable individual 517 CPUs at runtime on SMP machines. 518 519 Say N if you are unsure. 520 521config KEXEC 522 bool "kexec system call (EXPERIMENTAL)" 523 depends on PPC_MULTIPLATFORM && EXPERIMENTAL 524 help 525 kexec is a system call that implements the ability to shutdown your 526 current kernel, and to start another kernel. It is like a reboot 527 but it is indepedent of the system firmware. And like a reboot 528 you can start any kernel with it, not just Linux. 529 530 The name comes from the similiarity to the exec system call. 531 532 It is an ongoing process to be certain the hardware in a machine 533 is properly shutdown, so do not be surprised if this code does not 534 initially work for you. It may help to enable device hotplugging 535 support. As of this writing the exact hardware interface is 536 strongly in flux, so no good recommendation can be made. 537 538config EMBEDDEDBOOT 539 bool 540 depends on 8xx || 8260 541 default y 542 543config PC_KEYBOARD 544 bool "PC PS/2 style Keyboard" 545 depends on 4xx || CPM2 546 547config PPCBUG_NVRAM 548 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC 549 default y if PPC_PREP 550 551config IRQ_ALL_CPUS 552 bool "Distribute interrupts on all CPUs by default" 553 depends on SMP && !MV64360 554 help 555 This option gives the kernel permission to distribute IRQs across 556 multiple CPUs. Saying N here will route all IRQs to the first 557 CPU. Generally saying Y is safe, although some problems have been 558 reported with SMP Power Macintoshes with this option enabled. 559 560source "arch/powerpc/platforms/pseries/Kconfig" 561 562config NUMA 563 bool "NUMA support" 564 depends on PPC64 565 default y if SMP && PPC_PSERIES 566 567config ARCH_SELECT_MEMORY_MODEL 568 def_bool y 569 depends on PPC64 570 571config ARCH_FLATMEM_ENABLE 572 def_bool y 573 depends on PPC64 && !NUMA 574 575config ARCH_DISCONTIGMEM_ENABLE 576 def_bool y 577 depends on SMP && PPC_PSERIES 578 579config ARCH_DISCONTIGMEM_DEFAULT 580 def_bool y 581 depends on ARCH_DISCONTIGMEM_ENABLE 582 583config ARCH_SPARSEMEM_ENABLE 584 def_bool y 585 depends on ARCH_DISCONTIGMEM_ENABLE 586 587source "mm/Kconfig" 588 589config HAVE_ARCH_EARLY_PFN_TO_NID 590 def_bool y 591 depends on NEED_MULTIPLE_NODES 592 593# Some NUMA nodes have memory ranges that span 594# other nodes. Even though a pfn is valid and 595# between a node's start and end pfns, it may not 596# reside on that node. 597# 598# This is a relatively temporary hack that should 599# be able to go away when sparsemem is fully in 600# place 601 602config NODES_SPAN_OTHER_NODES 603 def_bool y 604 depends on NEED_MULTIPLE_NODES 605 606config PPC_64K_PAGES 607 bool "64k page size" 608 depends on PPC64 609 help 610 This option changes the kernel logical page size to 64k. On machines 611 without processor support for 64k pages, the kernel will simulate 612 them by loading each individual 4k page on demand transparently, 613 while on hardware with such support, it will be used to map 614 normal application pages. 615 616config SCHED_SMT 617 bool "SMT (Hyperthreading) scheduler support" 618 depends on PPC64 && SMP 619 default off 620 help 621 SMT scheduler support improves the CPU scheduler's decision making 622 when dealing with POWER5 cpus at a cost of slightly increased 623 overhead in some places. If unsure say N here. 624 625config PROC_DEVICETREE 626 bool "Support for device tree in /proc" 627 depends on PROC_FS 628 help 629 This option adds a device-tree directory under /proc which contains 630 an image of the device tree that the kernel copies from Open 631 Firmware or other boot firmware. If unsure, say Y here. 632 633source "arch/powerpc/platforms/prep/Kconfig" 634 635config CMDLINE_BOOL 636 bool "Default bootloader kernel arguments" 637 depends on !PPC_ISERIES 638 639config CMDLINE 640 string "Initial kernel command string" 641 depends on CMDLINE_BOOL 642 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 643 help 644 On some platforms, there is currently no way for the boot loader to 645 pass arguments to the kernel. For these platforms, you can supply 646 some command-line options at build time by entering them here. In 647 most cases you will need to specify the root device here. 648 649if !44x || BROKEN 650source kernel/power/Kconfig 651endif 652 653config SECCOMP 654 bool "Enable seccomp to safely compute untrusted bytecode" 655 depends on PROC_FS 656 default y 657 help 658 This kernel feature is useful for number crunching applications 659 that may need to compute untrusted bytecode during their 660 execution. By using pipes or other transports made available to 661 the process as file descriptors supporting the read/write 662 syscalls, it's possible to isolate those applications in 663 their own address space using seccomp. Once seccomp is 664 enabled via /proc/<pid>/seccomp, it cannot be disabled 665 and the task is only allowed to execute a few safe syscalls 666 defined by each seccomp mode. 667 668 If unsure, say Y. Only embedded should say N here. 669 670endmenu 671 672config ISA_DMA_API 673 bool 674 default y 675 676menu "Bus options" 677 678config ISA 679 bool "Support for ISA-bus hardware" 680 depends on PPC_PREP || PPC_CHRP 681 select PPC_I8259 682 help 683 Find out whether you have ISA slots on your motherboard. ISA is the 684 name of a bus system, i.e. the way the CPU talks to the other stuff 685 inside your box. If you have an Apple machine, say N here; if you 686 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If 687 you have an embedded board, consult your board documentation. 688 689config GENERIC_ISA_DMA 690 bool 691 depends on PPC64 || POWER4 || 6xx && !CPM2 692 default y 693 694config PPC_I8259 695 bool 696 default y if 85xx 697 default n 698 699config PPC_INDIRECT_PCI 700 bool 701 depends on PCI 702 default y if 40x || 44x || 85xx || 83xx 703 default n 704 705config EISA 706 bool 707 708config SBUS 709 bool 710 711# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 712config MCA 713 bool 714 715config PCI 716 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) 717 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx 718 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS 719 default PCI_QSPAN if !4xx && !CPM2 && 8xx 720 help 721 Find out whether your system includes a PCI bus. PCI is the name of 722 a bus system, i.e. the way the CPU talks to the other stuff inside 723 your box. If you say Y here, the kernel will include drivers and 724 infrastructure code to support PCI bus devices. 725 726config PCI_DOMAINS 727 bool 728 default PCI 729 730config MPC83xx_PCI2 731 bool " Supprt for 2nd PCI host controller" 732 depends on PCI && MPC834x 733 default y if MPC834x_SYS 734 735config PCI_QSPAN 736 bool "QSpan PCI" 737 depends on !4xx && !CPM2 && 8xx 738 select PPC_I8259 739 help 740 Say Y here if you have a system based on a Motorola 8xx-series 741 embedded processor with a QSPAN PCI interface, otherwise say N. 742 743config PCI_8260 744 bool 745 depends on PCI && 8260 746 select PPC_INDIRECT_PCI 747 default y 748 749config 8260_PCI9 750 bool " Enable workaround for MPC826x erratum PCI 9" 751 depends on PCI_8260 && !ADS8272 752 default y 753 754choice 755 prompt " IDMA channel for PCI 9 workaround" 756 depends on 8260_PCI9 757 758config 8260_PCI9_IDMA1 759 bool "IDMA1" 760 761config 8260_PCI9_IDMA2 762 bool "IDMA2" 763 764config 8260_PCI9_IDMA3 765 bool "IDMA3" 766 767config 8260_PCI9_IDMA4 768 bool "IDMA4" 769 770endchoice 771 772source "drivers/pci/Kconfig" 773 774source "drivers/pcmcia/Kconfig" 775 776source "drivers/pci/hotplug/Kconfig" 777 778endmenu 779 780menu "Advanced setup" 781 depends on PPC32 782 783config ADVANCED_OPTIONS 784 bool "Prompt for advanced kernel configuration options" 785 help 786 This option will enable prompting for a variety of advanced kernel 787 configuration options. These options can cause the kernel to not 788 work if they are set incorrectly, but can be used to optimize certain 789 aspects of kernel memory management. 790 791 Unless you know what you are doing, say N here. 792 793comment "Default settings for advanced configuration options are used" 794 depends on !ADVANCED_OPTIONS 795 796config HIGHMEM_START_BOOL 797 bool "Set high memory pool address" 798 depends on ADVANCED_OPTIONS && HIGHMEM 799 help 800 This option allows you to set the base address of the kernel virtual 801 area used to map high memory pages. This can be useful in 802 optimizing the layout of kernel virtual memory. 803 804 Say N here unless you know what you are doing. 805 806config HIGHMEM_START 807 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL 808 default "0xfe000000" 809 810config LOWMEM_SIZE_BOOL 811 bool "Set maximum low memory" 812 depends on ADVANCED_OPTIONS 813 help 814 This option allows you to set the maximum amount of memory which 815 will be used as "low memory", that is, memory which the kernel can 816 access directly, without having to set up a kernel virtual mapping. 817 This can be useful in optimizing the layout of kernel virtual 818 memory. 819 820 Say N here unless you know what you are doing. 821 822config LOWMEM_SIZE 823 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 824 default "0x30000000" 825 826config KERNEL_START_BOOL 827 bool "Set custom kernel base address" 828 depends on ADVANCED_OPTIONS 829 help 830 This option allows you to set the kernel virtual address at which 831 the kernel will map low memory (the kernel image will be linked at 832 this address). This can be useful in optimizing the virtual memory 833 layout of the system. 834 835 Say N here unless you know what you are doing. 836 837config KERNEL_START 838 hex "Virtual address of kernel base" if KERNEL_START_BOOL 839 default "0xc0000000" 840 841config TASK_SIZE_BOOL 842 bool "Set custom user task size" 843 depends on ADVANCED_OPTIONS 844 help 845 This option allows you to set the amount of virtual address space 846 allocated to user tasks. This can be useful in optimizing the 847 virtual memory layout of the system. 848 849 Say N here unless you know what you are doing. 850 851config TASK_SIZE 852 hex "Size of user task space" if TASK_SIZE_BOOL 853 default "0x80000000" 854 855config CONSISTENT_START_BOOL 856 bool "Set custom consistent memory pool address" 857 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 858 help 859 This option allows you to set the base virtual address 860 of the the consistent memory pool. This pool of virtual 861 memory is used to make consistent memory allocations. 862 863config CONSISTENT_START 864 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL 865 default "0xff100000" if NOT_COHERENT_CACHE 866 867config CONSISTENT_SIZE_BOOL 868 bool "Set custom consistent memory pool size" 869 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 870 help 871 This option allows you to set the size of the the 872 consistent memory pool. This pool of virtual memory 873 is used to make consistent memory allocations. 874 875config CONSISTENT_SIZE 876 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 877 default "0x00200000" if NOT_COHERENT_CACHE 878 879config BOOT_LOAD_BOOL 880 bool "Set the boot link/load address" 881 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM 882 help 883 This option allows you to set the initial load address of the zImage 884 or zImage.initrd file. This can be useful if you are on a board 885 which has a small amount of memory. 886 887 Say N here unless you know what you are doing. 888 889config BOOT_LOAD 890 hex "Link/load address for booting" if BOOT_LOAD_BOOL 891 default "0x00400000" if 40x || 8xx || 8260 892 default "0x01000000" if 44x 893 default "0x00800000" 894 895config PIN_TLB 896 bool "Pinned Kernel TLBs (860 ONLY)" 897 depends on ADVANCED_OPTIONS && 8xx 898endmenu 899 900if PPC64 901config KERNEL_START 902 hex 903 default "0xc000000000000000" 904endif 905 906source "net/Kconfig" 907 908source "drivers/Kconfig" 909 910source "fs/Kconfig" 911 912# XXX source "arch/ppc/8xx_io/Kconfig" 913 914# XXX source "arch/ppc/8260_io/Kconfig" 915 916source "arch/powerpc/platforms/iseries/Kconfig" 917 918source "lib/Kconfig" 919 920source "arch/powerpc/oprofile/Kconfig" 921 922source "arch/powerpc/Kconfig.debug" 923 924source "security/Kconfig" 925 926config KEYS_COMPAT 927 bool 928 depends on COMPAT && KEYS 929 default y 930 931source "crypto/Kconfig" 932