1source "arch/powerpc/platforms/Kconfig.cputype" 2 3config PPC32 4 bool 5 default y if !PPC64 6 7config 32BIT 8 bool 9 default y if PPC32 10 11config 64BIT 12 bool 13 default y if PPC64 14 15config WORD_SIZE 16 int 17 default 64 if PPC64 18 default 32 if !PPC64 19 20config ARCH_PHYS_ADDR_T_64BIT 21 def_bool PPC64 || PHYS_64BIT 22 23config ARCH_DMA_ADDR_T_64BIT 24 def_bool ARCH_PHYS_ADDR_T_64BIT 25 26config MMU 27 bool 28 default y 29 30config HAVE_SETUP_PER_CPU_AREA 31 def_bool PPC64 32 33config NEED_PER_CPU_EMBED_FIRST_CHUNK 34 def_bool PPC64 35 36config NR_IRQS 37 int "Number of virtual interrupt numbers" 38 range 32 32768 39 default "512" 40 help 41 This defines the number of virtual interrupt numbers the kernel 42 can manage. Virtual interrupt numbers are what you see in 43 /proc/interrupts. If you configure your system to have too few, 44 drivers will fail to load or worse - handle with care. 45 46config STACKTRACE_SUPPORT 47 bool 48 default y 49 50config HAVE_LATENCYTOP_SUPPORT 51 def_bool y 52 53config TRACE_IRQFLAGS_SUPPORT 54 bool 55 default y 56 57config LOCKDEP_SUPPORT 58 bool 59 default y 60 61config RWSEM_GENERIC_SPINLOCK 62 bool 63 64config RWSEM_XCHGADD_ALGORITHM 65 bool 66 default y 67 68config GENERIC_LOCKBREAK 69 bool 70 default y 71 depends on SMP && PREEMPT 72 73config ARCH_HAS_ILOG2_U32 74 bool 75 default y 76 77config ARCH_HAS_ILOG2_U64 78 bool 79 default y if 64BIT 80 81config GENERIC_HWEIGHT 82 bool 83 default y 84 85config PPC 86 bool 87 default y 88 select ARCH_MIGHT_HAVE_PC_PARPORT 89 select ARCH_MIGHT_HAVE_PC_SERIO 90 select BINFMT_ELF 91 select ARCH_HAS_ELF_RANDOMIZE 92 select OF 93 select OF_EARLY_FLATTREE 94 select OF_RESERVED_MEM 95 select HAVE_FTRACE_MCOUNT_RECORD 96 select HAVE_DYNAMIC_FTRACE 97 select HAVE_FUNCTION_TRACER 98 select HAVE_FUNCTION_GRAPH_TRACER 99 select SYSCTL_EXCEPTION_TRACE 100 select ARCH_WANT_OPTIONAL_GPIOLIB 101 select VIRT_TO_BUS if !PPC64 102 select HAVE_IDE 103 select HAVE_IOREMAP_PROT 104 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN 105 select HAVE_KPROBES 106 select HAVE_ARCH_KGDB 107 select HAVE_KRETPROBES 108 select HAVE_ARCH_TRACEHOOK 109 select HAVE_MEMBLOCK 110 select HAVE_MEMBLOCK_NODE_MAP 111 select HAVE_DMA_ATTRS 112 select HAVE_DMA_API_DEBUG 113 select HAVE_OPROFILE 114 select HAVE_DEBUG_KMEMLEAK 115 select ARCH_HAS_SG_CHAIN 116 select GENERIC_ATOMIC64 if PPC32 117 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 118 select HAVE_PERF_EVENTS 119 select HAVE_REGS_AND_STACK_ACCESS_API 120 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 121 select ARCH_WANT_IPC_PARSE_VERSION 122 select SPARSE_IRQ 123 select IRQ_DOMAIN 124 select GENERIC_IRQ_SHOW 125 select GENERIC_IRQ_SHOW_LEVEL 126 select IRQ_FORCED_THREADING 127 select HAVE_RCU_TABLE_FREE if SMP 128 select HAVE_SYSCALL_TRACEPOINTS 129 select HAVE_BPF_JIT 130 select HAVE_ARCH_JUMP_LABEL 131 select ARCH_HAVE_NMI_SAFE_CMPXCHG 132 select ARCH_HAS_GCOV_PROFILE_ALL 133 select GENERIC_SMP_IDLE_THREAD 134 select GENERIC_CMOS_UPDATE 135 select GENERIC_TIME_VSYSCALL_OLD 136 select GENERIC_CLOCKEVENTS 137 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 138 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 139 select GENERIC_STRNCPY_FROM_USER 140 select GENERIC_STRNLEN_USER 141 select HAVE_MOD_ARCH_SPECIFIC 142 select MODULES_USE_ELF_RELA 143 select CLONE_BACKWARDS 144 select ARCH_USE_BUILTIN_BSWAP 145 select OLD_SIGSUSPEND 146 select OLD_SIGACTION if PPC32 147 select HAVE_DEBUG_STACKOVERFLOW 148 select HAVE_IRQ_EXIT_ON_IRQ_STACK 149 select ARCH_USE_CMPXCHG_LOCKREF if PPC64 150 select HAVE_ARCH_AUDITSYSCALL 151 select ARCH_SUPPORTS_ATOMIC_RMW 152 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN 153 select NO_BOOTMEM 154 select HAVE_GENERIC_RCU_GUP 155 select HAVE_PERF_EVENTS_NMI if PPC64 156 157config GENERIC_CSUM 158 def_bool CPU_LITTLE_ENDIAN 159 160config EARLY_PRINTK 161 bool 162 default y 163 164config PANIC_TIMEOUT 165 int 166 default 180 167 168config COMPAT 169 bool 170 default y if PPC64 171 select COMPAT_BINFMT_ELF 172 select ARCH_WANT_OLD_COMPAT_IPC 173 select COMPAT_OLD_SIGACTION 174 175config SYSVIPC_COMPAT 176 bool 177 depends on COMPAT && SYSVIPC 178 default y 179 180# All PPC32s use generic nvram driver through ppc_md 181config GENERIC_NVRAM 182 bool 183 default y if PPC32 184 185config SCHED_OMIT_FRAME_POINTER 186 bool 187 default y 188 189config ARCH_MAY_HAVE_PC_FDC 190 bool 191 default PCI 192 193config PPC_UDBG_16550 194 bool 195 default n 196 197config GENERIC_TBSYNC 198 bool 199 default y if PPC32 && SMP 200 default n 201 202config AUDIT_ARCH 203 bool 204 default y 205 206config GENERIC_BUG 207 bool 208 default y 209 depends on BUG 210 211config SYS_SUPPORTS_APM_EMULATION 212 default y if PMAC_APM_EMU 213 bool 214 215config EPAPR_BOOT 216 bool 217 help 218 Used to allow a board to specify it wants an ePAPR compliant wrapper. 219 default n 220 221config DEFAULT_UIMAGE 222 bool 223 help 224 Used to allow a board to specify it wants a uImage built by default 225 default n 226 227config ARCH_HIBERNATION_POSSIBLE 228 bool 229 default y 230 231config ARCH_SUSPEND_POSSIBLE 232 def_bool y 233 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ 234 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ 235 || 44x || 40x 236 237config PPC_DCR_NATIVE 238 bool 239 default n 240 241config PPC_DCR_MMIO 242 bool 243 default n 244 245config PPC_DCR 246 bool 247 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO 248 default y 249 250config PPC_OF_PLATFORM_PCI 251 bool 252 depends on PCI 253 depends on PPC64 # not supported on 32 bits yet 254 default n 255 256config ARCH_SUPPORTS_DEBUG_PAGEALLOC 257 depends on PPC32 || PPC_STD_MMU_64 258 def_bool y 259 260config ARCH_SUPPORTS_UPROBES 261 def_bool y 262 263config PPC_ADV_DEBUG_REGS 264 bool 265 depends on 40x || BOOKE 266 default y 267 268config PPC_ADV_DEBUG_IACS 269 int 270 depends on PPC_ADV_DEBUG_REGS 271 default 4 if 44x 272 default 2 273 274config PPC_ADV_DEBUG_DACS 275 int 276 depends on PPC_ADV_DEBUG_REGS 277 default 2 278 279config PPC_ADV_DEBUG_DVCS 280 int 281 depends on PPC_ADV_DEBUG_REGS 282 default 2 if 44x 283 default 0 284 285config PPC_ADV_DEBUG_DAC_RANGE 286 bool 287 depends on PPC_ADV_DEBUG_REGS && 44x 288 default y 289 290config PPC_EMULATE_SSTEP 291 bool 292 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT 293 294config ZONE_DMA32 295 bool 296 default y if PPC64 297 298config PGTABLE_LEVELS 299 int 300 default 2 if !PPC64 301 default 3 if PPC_64K_PAGES 302 default 4 303 304source "init/Kconfig" 305 306source "kernel/Kconfig.freezer" 307 308source "arch/powerpc/sysdev/Kconfig" 309source "arch/powerpc/platforms/Kconfig" 310 311menu "Kernel options" 312 313config HIGHMEM 314 bool "High memory support" 315 depends on PPC32 316 317source kernel/Kconfig.hz 318source kernel/Kconfig.preempt 319source "fs/Kconfig.binfmt" 320 321config HUGETLB_PAGE_SIZE_VARIABLE 322 bool 323 depends on HUGETLB_PAGE 324 default y 325 326config MATH_EMULATION 327 bool "Math emulation" 328 depends on 4xx || 8xx || PPC_MPC832x || BOOKE 329 ---help--- 330 Some PowerPC chips designed for embedded applications do not have 331 a floating-point unit and therefore do not implement the 332 floating-point instructions in the PowerPC instruction set. If you 333 say Y here, the kernel will include code to emulate a floating-point 334 unit, which will allow programs that use floating-point 335 instructions to run. 336 337 This is also useful to emulate missing (optional) instructions 338 such as fsqrt on cores that do have an FPU but do not implement 339 them (such as Freescale BookE). 340 341choice 342 prompt "Math emulation options" 343 default MATH_EMULATION_FULL 344 depends on MATH_EMULATION 345 346config MATH_EMULATION_FULL 347 bool "Emulate all the floating point instructions" 348 ---help--- 349 Select this option will enable the kernel to support to emulate 350 all the floating point instructions. If your SoC doesn't have 351 a FPU, you should select this. 352 353config MATH_EMULATION_HW_UNIMPLEMENTED 354 bool "Just emulate the FPU unimplemented instructions" 355 ---help--- 356 Select this if you know there does have a hardware FPU on your 357 SoC, but some floating point instructions are not implemented by that. 358 359endchoice 360 361config PPC_TRANSACTIONAL_MEM 362 bool "Transactional Memory support for POWERPC" 363 depends on PPC_BOOK3S_64 364 depends on SMP 365 select ALTIVEC 366 select VSX 367 default n 368 ---help--- 369 Support user-mode Transactional Memory on POWERPC. 370 371config IOMMU_HELPER 372 def_bool PPC64 373 374config SWIOTLB 375 bool "SWIOTLB support" 376 default n 377 select IOMMU_HELPER 378 ---help--- 379 Support for IO bounce buffering for systems without an IOMMU. 380 This allows us to DMA to the full physical address space on 381 platforms where the size of a physical address is larger 382 than the bus address. Not all platforms support this. 383 384config HOTPLUG_CPU 385 bool "Support for enabling/disabling CPUs" 386 depends on SMP && (PPC_PSERIES || \ 387 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) 388 ---help--- 389 Say Y here to be able to disable and re-enable individual 390 CPUs at runtime on SMP machines. 391 392 Say N if you are unsure. 393 394config ARCH_CPU_PROBE_RELEASE 395 def_bool y 396 depends on HOTPLUG_CPU 397 398config ARCH_ENABLE_MEMORY_HOTPLUG 399 def_bool y 400 401config ARCH_HAS_WALK_MEMORY 402 def_bool y 403 404config ARCH_ENABLE_MEMORY_HOTREMOVE 405 def_bool y 406 407config PPC64_SUPPORTS_MEMORY_FAILURE 408 bool "Add support for memory hwpoison" 409 depends on PPC_BOOK3S_64 410 default "y" if PPC_POWERNV 411 select ARCH_SUPPORTS_MEMORY_FAILURE 412 413config KEXEC 414 bool "kexec system call" 415 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) 416 help 417 kexec is a system call that implements the ability to shutdown your 418 current kernel, and to start another kernel. It is like a reboot 419 but it is independent of the system firmware. And like a reboot 420 you can start any kernel with it, not just Linux. 421 422 The name comes from the similarity to the exec system call. 423 424 It is an ongoing process to be certain the hardware in a machine 425 is properly shutdown, so do not be surprised if this code does not 426 initially work for you. As of this writing the exact hardware 427 interface is strongly in flux, so no good recommendation can be 428 made. 429 430config CRASH_DUMP 431 bool "Build a kdump crash kernel" 432 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) 433 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE 434 help 435 Build a kernel suitable for use as a kdump capture kernel. 436 The same kernel binary can be used as production kernel and dump 437 capture kernel. 438 439config FA_DUMP 440 bool "Firmware-assisted dump" 441 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC 442 help 443 A robust mechanism to get reliable kernel crash dump with 444 assistance from firmware. This approach does not use kexec, 445 instead firmware assists in booting the kdump kernel 446 while preserving memory contents. Firmware-assisted dump 447 is meant to be a kdump replacement offering robustness and 448 speed not possible without system firmware assistance. 449 450 If unsure, say "N" 451 452config IRQ_ALL_CPUS 453 bool "Distribute interrupts on all CPUs by default" 454 depends on SMP 455 help 456 This option gives the kernel permission to distribute IRQs across 457 multiple CPUs. Saying N here will route all IRQs to the first 458 CPU. Generally saying Y is safe, although some problems have been 459 reported with SMP Power Macintoshes with this option enabled. 460 461config NUMA 462 bool "NUMA support" 463 depends on PPC64 464 default y if SMP && PPC_PSERIES 465 466config NODES_SHIFT 467 int 468 default "8" if PPC64 469 default "4" 470 depends on NEED_MULTIPLE_NODES 471 472config USE_PERCPU_NUMA_NODE_ID 473 def_bool y 474 depends on NUMA 475 476config HAVE_MEMORYLESS_NODES 477 def_bool y 478 depends on NUMA 479 480config ARCH_SELECT_MEMORY_MODEL 481 def_bool y 482 depends on PPC64 483 484config ARCH_FLATMEM_ENABLE 485 def_bool y 486 depends on (PPC64 && !NUMA) || PPC32 487 488config ARCH_SPARSEMEM_ENABLE 489 def_bool y 490 depends on PPC64 491 select SPARSEMEM_VMEMMAP_ENABLE 492 493config ARCH_SPARSEMEM_DEFAULT 494 def_bool y 495 depends on (SMP && PPC_PSERIES) || PPC_PS3 496 497config SYS_SUPPORTS_HUGETLBFS 498 bool 499 500source "mm/Kconfig" 501 502config ARCH_MEMORY_PROBE 503 def_bool y 504 depends on MEMORY_HOTPLUG 505 506# Some NUMA nodes have memory ranges that span 507# other nodes. Even though a pfn is valid and 508# between a node's start and end pfns, it may not 509# reside on that node. See memmap_init_zone() 510# for details. 511config NODES_SPAN_OTHER_NODES 512 def_bool y 513 depends on NEED_MULTIPLE_NODES 514 515config PPC_HAS_HASH_64K 516 bool 517 depends on PPC64 518 default n 519 520config STDBINUTILS 521 bool "Using standard binutils settings" 522 depends on 44x 523 default y 524 help 525 Turning this option off allows you to select 256KB PAGE_SIZE on 44x. 526 Note, that kernel will be able to run only those applications, 527 which had been compiled using binutils later than 2.17.50.0.3 with 528 '-zmax-page-size' set to 256K (the default is 64K). Or, if using 529 the older binutils, you can patch them with a trivial patch, which 530 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. 531 532choice 533 prompt "Page size" 534 default PPC_4K_PAGES 535 help 536 Select the kernel logical page size. Increasing the page size 537 will reduce software overhead at each page boundary, allow 538 hardware prefetch mechanisms to be more effective, and allow 539 larger dma transfers increasing IO efficiency and reducing 540 overhead. However the utilization of memory will increase. 541 For example, each cached file will using a multiple of the 542 page size to hold its contents and the difference between the 543 end of file and the end of page is wasted. 544 545 Some dedicated systems, such as software raid serving with 546 accelerated calculations, have shown significant increases. 547 548 If you configure a 64 bit kernel for 64k pages but the 549 processor does not support them, then the kernel will simulate 550 them with 4k pages, loading them on demand, but with the 551 reduced software overhead and larger internal fragmentation. 552 For the 32 bit kernel, a large page option will not be offered 553 unless it is supported by the configured processor. 554 555 If unsure, choose 4K_PAGES. 556 557config PPC_4K_PAGES 558 bool "4k page size" 559 560config PPC_16K_PAGES 561 bool "16k page size" if 44x || PPC_8xx 562 563config PPC_64K_PAGES 564 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 565 depends on !PPC_FSL_BOOK3E 566 select PPC_HAS_HASH_64K if PPC_STD_MMU_64 567 568config PPC_256K_PAGES 569 bool "256k page size" if 44x 570 depends on !STDBINUTILS 571 help 572 Make the page size 256k. 573 574 As the ELF standard only requires alignment to support page 575 sizes up to 64k, you will need to compile all of your user 576 space applications with a non-standard binutils settings 577 (see the STDBINUTILS description for details). 578 579 Say N unless you know what you are doing. 580 581endchoice 582 583config FORCE_MAX_ZONEORDER 584 int "Maximum zone order" 585 range 9 64 if PPC64 && PPC_64K_PAGES 586 default "9" if PPC64 && PPC_64K_PAGES 587 range 13 64 if PPC64 && !PPC_64K_PAGES 588 default "13" if PPC64 && !PPC_64K_PAGES 589 range 9 64 if PPC32 && PPC_16K_PAGES 590 default "9" if PPC32 && PPC_16K_PAGES 591 range 7 64 if PPC32 && PPC_64K_PAGES 592 default "7" if PPC32 && PPC_64K_PAGES 593 range 5 64 if PPC32 && PPC_256K_PAGES 594 default "5" if PPC32 && PPC_256K_PAGES 595 range 11 64 596 default "11" 597 help 598 The kernel memory allocator divides physically contiguous memory 599 blocks into "zones", where each zone is a power of two number of 600 pages. This option selects the largest power of two that the kernel 601 keeps in the memory allocator. If you need to allocate very large 602 blocks of physically contiguous memory, then you may need to 603 increase this value. 604 605 This config option is actually maximum order plus one. For example, 606 a value of 11 means that the largest free memory block is 2^10 pages. 607 608 The page size is not necessarily 4KB. For example, on 64-bit 609 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep 610 this in mind when choosing a value for this option. 611 612config PPC_SUBPAGE_PROT 613 bool "Support setting protections for 4k subpages" 614 depends on PPC_STD_MMU_64 && PPC_64K_PAGES 615 help 616 This option adds support for a system call to allow user programs 617 to set access permissions (read/write, readonly, or no access) 618 on the 4k subpages of each 64k page. 619 620config PPC_COPRO_BASE 621 bool 622 default n 623 624config SCHED_SMT 625 bool "SMT (Hyperthreading) scheduler support" 626 depends on PPC64 && SMP 627 help 628 SMT scheduler support improves the CPU scheduler's decision making 629 when dealing with POWER5 cpus at a cost of slightly increased 630 overhead in some places. If unsure say N here. 631 632config PPC_DENORMALISATION 633 bool "PowerPC denormalisation exception handling" 634 depends on PPC_BOOK3S_64 635 default "y" if PPC_POWERNV 636 ---help--- 637 Add support for handling denormalisation of single precision 638 values. Useful for bare metal only. If unsure say Y here. 639 640config CMDLINE_BOOL 641 bool "Default bootloader kernel arguments" 642 643config CMDLINE 644 string "Initial kernel command string" 645 depends on CMDLINE_BOOL 646 default "console=ttyS0,9600 console=tty0 root=/dev/sda2" 647 help 648 On some platforms, there is currently no way for the boot loader to 649 pass arguments to the kernel. For these platforms, you can supply 650 some command-line options at build time by entering them here. In 651 most cases you will need to specify the root device here. 652 653config CMDLINE_FORCE 654 bool "Always use the default kernel command string" 655 depends on CMDLINE_BOOL 656 help 657 Always use the default kernel command string, even if the boot 658 loader passes other arguments to the kernel. 659 This is useful if you cannot or don't want to change the 660 command-line options your boot loader passes to the kernel. 661 662config EXTRA_TARGETS 663 string "Additional default image types" 664 help 665 List additional targets to be built by the bootwrapper here (separated 666 by spaces). This is useful for targets that depend of device tree 667 files in the .dts directory. 668 669 Targets in this list will be build as part of the default build 670 target, or when the user does a 'make zImage' or a 671 'make zImage.initrd'. 672 673 If unsure, leave blank 674 675config ARCH_WANTS_FREEZER_CONTROL 676 def_bool y 677 depends on ADB_PMU 678 679source kernel/power/Kconfig 680 681config SECCOMP 682 bool "Enable seccomp to safely compute untrusted bytecode" 683 depends on PROC_FS 684 default y 685 help 686 This kernel feature is useful for number crunching applications 687 that may need to compute untrusted bytecode during their 688 execution. By using pipes or other transports made available to 689 the process as file descriptors supporting the read/write 690 syscalls, it's possible to isolate those applications in 691 their own address space using seccomp. Once seccomp is 692 enabled via /proc/<pid>/seccomp, it cannot be disabled 693 and the task is only allowed to execute a few safe syscalls 694 defined by each seccomp mode. 695 696 If unsure, say Y. Only embedded should say N here. 697 698endmenu 699 700config ISA_DMA_API 701 bool 702 default PCI 703 704menu "Bus options" 705 706config ISA 707 bool "Support for ISA-bus hardware" 708 depends on PPC_CHRP 709 select PPC_I8259 710 help 711 Find out whether you have ISA slots on your motherboard. ISA is the 712 name of a bus system, i.e. the way the CPU talks to the other stuff 713 inside your box. If you have an Apple machine, say N here; if you 714 have an IBM RS/6000 or pSeries machine, say Y. If you have an 715 embedded board, consult your board documentation. 716 717config ZONE_DMA 718 bool 719 default y 720 721config NEED_DMA_MAP_STATE 722 def_bool (PPC64 || NOT_COHERENT_CACHE) 723 724config NEED_SG_DMA_LENGTH 725 def_bool y 726 727config GENERIC_ISA_DMA 728 bool 729 depends on ISA_DMA_API 730 default y 731 732config PPC_INDIRECT_PCI 733 bool 734 depends on PCI 735 default y if 40x || 44x 736 default n 737 738config EISA 739 bool 740 741config SBUS 742 bool 743 744config FSL_SOC 745 bool 746 747config FSL_PCI 748 bool 749 select PPC_INDIRECT_PCI 750 select PCI_QUIRKS 751 752config FSL_PMC 753 bool 754 default y 755 depends on SUSPEND && (PPC_85xx || PPC_86xx) 756 help 757 Freescale MPC85xx/MPC86xx power management controller support 758 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c 759 760config PPC4xx_CPM 761 bool 762 default y 763 depends on SUSPEND && (44x || 40x) 764 help 765 PPC4xx Clock Power Management (CPM) support (suspend/resume). 766 It also enables support for two different idle states (idle-wait 767 and idle-doze). 768 769config 4xx_SOC 770 bool 771 772config FSL_LBC 773 bool "Freescale Local Bus support" 774 depends on FSL_SOC 775 help 776 Enables reporting of errors from the Freescale local bus 777 controller. Also contains some common code used by 778 drivers for specific local bus peripherals. 779 780config FSL_GTM 781 bool 782 depends on PPC_83xx || QUICC_ENGINE || CPM2 783 help 784 Freescale General-purpose Timers support 785 786# Yes MCA RS/6000s exist but Linux-PPC does not currently support any 787config MCA 788 bool 789 790# Platforms that what PCI turned unconditionally just do select PCI 791# in their config node. Platforms that want to choose at config 792# time should select PPC_PCI_CHOICE 793config PPC_PCI_CHOICE 794 bool 795 796config PCI 797 bool "PCI support" if PPC_PCI_CHOICE 798 default y if !40x && !CPM2 && !8xx && !PPC_83xx \ 799 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON 800 default PCI_QSPAN if !4xx && !CPM2 && 8xx 801 select GENERIC_PCI_IOMAP 802 help 803 Find out whether your system includes a PCI bus. PCI is the name of 804 a bus system, i.e. the way the CPU talks to the other stuff inside 805 your box. If you say Y here, the kernel will include drivers and 806 infrastructure code to support PCI bus devices. 807 808config PCI_DOMAINS 809 def_bool PCI 810 811config PCI_SYSCALL 812 def_bool PCI 813 814config PCI_QSPAN 815 bool "QSpan PCI" 816 depends on !4xx && !CPM2 && 8xx 817 select PPC_I8259 818 help 819 Say Y here if you have a system based on a Motorola 8xx-series 820 embedded processor with a QSPAN PCI interface, otherwise say N. 821 822config PCI_8260 823 bool 824 depends on PCI && 8260 825 select PPC_INDIRECT_PCI 826 default y 827 828source "drivers/pci/pcie/Kconfig" 829 830source "drivers/pci/Kconfig" 831 832source "drivers/pcmcia/Kconfig" 833 834source "drivers/pci/hotplug/Kconfig" 835 836config HAS_RAPIDIO 837 bool 838 default n 839 840config RAPIDIO 841 tristate "RapidIO support" 842 depends on HAS_RAPIDIO || PCI 843 help 844 If you say Y here, the kernel will include drivers and 845 infrastructure code to support RapidIO interconnect devices. 846 847config FSL_RIO 848 bool "Freescale Embedded SRIO Controller support" 849 depends on RAPIDIO = y && HAS_RAPIDIO 850 default "n" 851 ---help--- 852 Include support for RapidIO controller on Freescale embedded 853 processors (MPC8548, MPC8641, etc). 854 855source "drivers/rapidio/Kconfig" 856 857endmenu 858 859config NONSTATIC_KERNEL 860 bool 861 default n 862 863menu "Advanced setup" 864 depends on PPC32 865 866config ADVANCED_OPTIONS 867 bool "Prompt for advanced kernel configuration options" 868 help 869 This option will enable prompting for a variety of advanced kernel 870 configuration options. These options can cause the kernel to not 871 work if they are set incorrectly, but can be used to optimize certain 872 aspects of kernel memory management. 873 874 Unless you know what you are doing, say N here. 875 876comment "Default settings for advanced configuration options are used" 877 depends on !ADVANCED_OPTIONS 878 879config LOWMEM_SIZE_BOOL 880 bool "Set maximum low memory" 881 depends on ADVANCED_OPTIONS 882 help 883 This option allows you to set the maximum amount of memory which 884 will be used as "low memory", that is, memory which the kernel can 885 access directly, without having to set up a kernel virtual mapping. 886 This can be useful in optimizing the layout of kernel virtual 887 memory. 888 889 Say N here unless you know what you are doing. 890 891config LOWMEM_SIZE 892 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 893 default "0x30000000" 894 895config LOWMEM_CAM_NUM_BOOL 896 bool "Set number of CAMs to use to map low memory" 897 depends on ADVANCED_OPTIONS && FSL_BOOKE 898 help 899 This option allows you to set the maximum number of CAM slots that 900 will be used to map low memory. There are a limited number of slots 901 available and even more limited number that will fit in the L1 MMU. 902 However, using more entries will allow mapping more low memory. This 903 can be useful in optimizing the layout of kernel virtual memory. 904 905 Say N here unless you know what you are doing. 906 907config LOWMEM_CAM_NUM 908 depends on FSL_BOOKE 909 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL 910 default 3 911 912config DYNAMIC_MEMSTART 913 bool "Enable page aligned dynamic load address for kernel" 914 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) 915 select NONSTATIC_KERNEL 916 help 917 This option enables the kernel to be loaded at any page aligned 918 physical address. The kernel creates a mapping from KERNELBASE to 919 the address where the kernel is loaded. The page size here implies 920 the TLB page size of the mapping for kernel on the particular platform. 921 Please refer to the init code for finding the TLB page size. 922 923 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE 924 kernel image, where the only restriction is the page aligned kernel 925 load address. When this option is enabled, the compile time physical 926 address CONFIG_PHYSICAL_START is ignored. 927 928 This option is overridden by CONFIG_RELOCATABLE 929 930config RELOCATABLE 931 bool "Build a relocatable kernel" 932 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) 933 select NONSTATIC_KERNEL 934 help 935 This builds a kernel image that is capable of running at the 936 location the kernel is loaded at, without any alignment restrictions. 937 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. 938 939 One use is for the kexec on panic case where the recovery kernel 940 must live at a different physical address than the primary 941 kernel. 942 943 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address 944 it has been loaded at and the compile time physical addresses 945 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START 946 setting can still be useful to bootwrappers that need to know the 947 load address of the kernel (eg. u-boot/mkimage). 948 949config RELOCATABLE_PPC32 950 def_bool y 951 depends on PPC32 && RELOCATABLE 952 953config PAGE_OFFSET_BOOL 954 bool "Set custom page offset address" 955 depends on ADVANCED_OPTIONS 956 help 957 This option allows you to set the kernel virtual address at which 958 the kernel will map low memory. This can be useful in optimizing 959 the virtual memory layout of the system. 960 961 Say N here unless you know what you are doing. 962 963config PAGE_OFFSET 964 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL 965 default "0xc0000000" 966 967config KERNEL_START_BOOL 968 bool "Set custom kernel base address" 969 depends on ADVANCED_OPTIONS 970 help 971 This option allows you to set the kernel virtual address at which 972 the kernel will be loaded. Normally this should match PAGE_OFFSET 973 however there are times (like kdump) that one might not want them 974 to be the same. 975 976 Say N here unless you know what you are doing. 977 978config KERNEL_START 979 hex "Virtual address of kernel base" if KERNEL_START_BOOL 980 default PAGE_OFFSET if PAGE_OFFSET_BOOL 981 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL 982 default "0xc0000000" 983 984config PHYSICAL_START_BOOL 985 bool "Set physical address where the kernel is loaded" 986 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE 987 help 988 This gives the physical address where the kernel is loaded. 989 990 Say N here unless you know what you are doing. 991 992config PHYSICAL_START 993 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL 994 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL 995 default "0x00000000" 996 997config PHYSICAL_ALIGN 998 hex 999 default "0x04000000" if FSL_BOOKE 1000 help 1001 This value puts the alignment restrictions on physical address 1002 where kernel is loaded and run from. Kernel is compiled for an 1003 address which meets above alignment restriction. 1004 1005config TASK_SIZE_BOOL 1006 bool "Set custom user task size" 1007 depends on ADVANCED_OPTIONS 1008 help 1009 This option allows you to set the amount of virtual address space 1010 allocated to user tasks. This can be useful in optimizing the 1011 virtual memory layout of the system. 1012 1013 Say N here unless you know what you are doing. 1014 1015config TASK_SIZE 1016 hex "Size of user task space" if TASK_SIZE_BOOL 1017 default "0x80000000" if PPC_8xx 1018 default "0xc0000000" 1019 1020config CONSISTENT_SIZE_BOOL 1021 bool "Set custom consistent memory pool size" 1022 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE 1023 help 1024 This option allows you to set the size of the 1025 consistent memory pool. This pool of virtual memory 1026 is used to make consistent memory allocations. 1027 1028config CONSISTENT_SIZE 1029 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL 1030 default "0x00200000" if NOT_COHERENT_CACHE 1031 1032config PIN_TLB 1033 bool "Pinned Kernel TLBs (860 ONLY)" 1034 depends on ADVANCED_OPTIONS && 8xx 1035endmenu 1036 1037if PPC64 1038config RELOCATABLE 1039 bool "Build a relocatable kernel" 1040 depends on !COMPILE_TEST 1041 select NONSTATIC_KERNEL 1042 help 1043 This builds a kernel image that is capable of running anywhere 1044 in the RMA (real memory area) at any 16k-aligned base address. 1045 The kernel is linked as a position-independent executable (PIE) 1046 and contains dynamic relocations which are processed early 1047 in the bootup process. 1048 1049 One use is for the kexec on panic case where the recovery kernel 1050 must live at a different physical address than the primary 1051 kernel. 1052 1053# This value must have zeroes in the bottom 60 bits otherwise lots will break 1054config PAGE_OFFSET 1055 hex 1056 default "0xc000000000000000" 1057config KERNEL_START 1058 hex 1059 default "0xc000000000000000" 1060config PHYSICAL_START 1061 hex 1062 default "0x00000000" 1063endif 1064 1065config ARCH_RANDOM 1066 def_bool n 1067 1068source "net/Kconfig" 1069 1070source "drivers/Kconfig" 1071 1072source "fs/Kconfig" 1073 1074source "arch/powerpc/sysdev/qe_lib/Kconfig" 1075 1076source "lib/Kconfig" 1077 1078source "arch/powerpc/Kconfig.debug" 1079 1080source "security/Kconfig" 1081 1082config KEYS_COMPAT 1083 bool 1084 depends on COMPAT && KEYS 1085 default y 1086 1087source "crypto/Kconfig" 1088 1089config PPC_LIB_RHEAP 1090 bool 1091 1092source "arch/powerpc/kvm/Kconfig" 1093