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