# For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # mainmenu "Linux/PowerPC Kernel Configuration" config WORD_SIZE int default 32 config MMU bool default y config GENERIC_HARDIRQS bool default y config RWSEM_GENERIC_SPINLOCK bool config RWSEM_XCHGADD_ALGORITHM bool default y config ARCH_HAS_ILOG2_U32 bool default y config ARCH_HAS_ILOG2_U64 bool default n config GENERIC_HWEIGHT bool default y config GENERIC_CALIBRATE_DELAY bool default y config PPC bool default y config PPC32 bool default y # All PPCs use generic nvram driver through ppc_md config GENERIC_NVRAM bool default y config GENERIC_FIND_NEXT_BIT bool default y config SCHED_NO_NO_OMIT_FRAME_POINTER bool default y config ARCH_MAY_HAVE_PC_FDC bool default y config GENERIC_BUG bool default y depends on BUG source "init/Kconfig" menu "Processor" choice prompt "Processor Type" default 6xx config 6xx bool "6xx/7xx/74xx/52xx/82xx/83xx" select PPC_FPU help There are four types of PowerPC chips supported. The more common types (601, 603, 604, 740, 750, 7400), the older Freescale (formerly Motorola) embedded versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the IBM embedded versions (403 and 405) and the Book E embedded processors from IBM (44x) and Freescale (85xx). For support for 64-bit processors, set ARCH=powerpc. Unless you are building a kernel for one of the embedded processor systems, choose 6xx. Also note that because the 52xx, 82xx, & 83xx family have a 603e core, specific support for that chipset is asked later on. config 40x bool "40x" select PPC_DCR_NATIVE config 44x bool "44x" select PPC_DCR_NATIVE config 8xx bool "8xx" config E200 bool "e200" config E500 bool "e500" endchoice config PPC_FPU bool config PPC_DCR_NATIVE bool default n config PPC_DCR bool depends on PPC_DCR_NATIVE default y config BOOKE bool depends on E200 || E500 default y config FSL_BOOKE bool depends on E200 || E500 default y config PTE_64BIT bool depends on 44x || E500 default y if 44x default y if E500 && PHYS_64BIT config PHYS_64BIT bool 'Large physical address support' if E500 depends on 44x || E500 default y if 44x ---help--- This option enables kernel support for larger than 32-bit physical addresses. This features is not be available on all e500 cores. If in doubt, say N here. config ALTIVEC bool "AltiVec Support" depends on 6xx depends on !8260 && !83xx ---help--- This option enables kernel support for the Altivec extensions to the PowerPC processor. The kernel currently supports saving and restoring altivec registers, and turning on the 'altivec enable' bit so user processes can execute altivec instructions. This option is only usefully if you have a processor that supports altivec (G4, otherwise known as 74xx series), but does not have any affect on a non-altivec cpu (it does, however add code to the kernel). If in doubt, say Y here. config SPE bool "SPE Support" depends on E200 || E500 ---help--- This option enables kernel support for the Signal Processing Extensions (SPE) to the PowerPC processor. The kernel currently supports saving and restoring SPE registers, and turning on the 'spe enable' bit so user processes can execute SPE instructions. This option is only useful if you have a processor that supports SPE (e500, otherwise known as 85xx series), but does not have any effect on a non-spe cpu (it does, however add code to the kernel). If in doubt, say Y here. config TAU bool "Thermal Management Support" depends on 6xx && !8260 && !83xx help G3 and G4 processors have an on-chip temperature sensor called the 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die temperature within 2-4 degrees Celsius. This option shows the current on-die temperature in /proc/cpuinfo if the cpu supports it. Unfortunately, on some chip revisions, this sensor is very inaccurate and in some cases, does not work at all, so don't assume the cpu temp is actually what /proc/cpuinfo says it is. config TAU_INT bool "Interrupt driven TAU driver (DANGEROUS)" depends on TAU ---help--- The TAU supports an interrupt driven mode which causes an interrupt whenever the temperature goes out of range. This is the fastest way to get notified the temp has exceeded a range. With this option off, a timer is used to re-check the temperature periodically. However, on some cpus it appears that the TAU interrupt hardware is buggy and can cause a situation which would lead unexplained hard lockups. Unless you are extending the TAU driver, or enjoy kernel/hardware debugging, leave this option off. config TAU_AVERAGE bool "Average high and low temp" depends on TAU ---help--- The TAU hardware can compare the temperature to an upper and lower bound. The default behavior is to show both the upper and lower bound in /proc/cpuinfo. If the range is large, the temperature is either changing a lot, or the TAU hardware is broken (likely on some G4's). If the range is small (around 4 degrees), the temperature is relatively stable. If you say Y here, a single temperature value, halfway between the upper and lower bounds, will be reported in /proc/cpuinfo. If in doubt, say N here. config MATH_EMULATION bool "Math emulation" depends on 4xx || 8xx || E200 || E500 ---help--- Some PowerPC chips designed for embedded applications do not have a floating-point unit and therefore do not implement the floating-point instructions in the PowerPC instruction set. If you say Y here, the kernel will include code to emulate a floating-point unit, which will allow programs that use floating-point instructions to run. If you have an Apple machine or an IBM RS/6000 or pSeries machine, or any machine with a 6xx, 7xx or 7xxx series processor, say N here. Saying Y here will not hurt performance (on any machine) but will increase the size of the kernel. config KEXEC bool "kexec system call (EXPERIMENTAL)" depends on EXPERIMENTAL help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot but it is independent of the system firmware. And like a reboot you can start any kernel with it, not just Linux. The name comes from the similarity to the exec system call. It is an ongoing process to be certain the hardware in a machine is properly shutdown, so do not be surprised if this code does not initially work for you. It may help to enable device hotplugging support. As of this writing the exact hardware interface is strongly in flux, so no good recommendation can be made. In the GameCube implementation, kexec allows you to load and run DOL files, including kernel and homebrew DOLs. source "drivers/cpufreq/Kconfig" config PPC601_SYNC_FIX bool "Workarounds for PPC601 bugs" depends on 6xx && PPC_PREP help Some versions of the PPC601 (the first PowerPC chip) have bugs which mean that extra synchronization instructions are required near certain instructions, typically those that make major changes to the CPU state. These extra instructions reduce performance slightly. If you say N here, these extra instructions will not be included, resulting in a kernel which will run faster but may not run at all on some systems with the PPC601 chip. If in doubt, say Y here. source arch/ppc/platforms/4xx/Kconfig source arch/ppc/platforms/85xx/Kconfig config PPC_STD_MMU bool depends on 6xx default y config NOT_COHERENT_CACHE bool depends on 4xx || 8xx || E200 default y endmenu menu "Platform options" config FADS bool choice prompt "8xx Machine Type" depends on 8xx default RPXLITE config RPXLITE bool "RPX-Lite" ---help--- Single-board computers based around the PowerPC MPC8xx chips and intended for embedded applications. The following types are supported: RPX-Lite: Embedded Planet RPX Lite. PC104 form-factor SBC based on the MPC823. RPX-Classic: Embedded Planet RPX Classic Low-fat. Credit-card-size SBC based on the MPC 860 BSE-IP: Bright Star Engineering ip-Engine. TQM823L: TQM850L: TQM855L: TQM860L: MPC8xx based family of mini modules, half credit card size, up to 64 MB of RAM, 8 MB Flash, (Fast) Ethernet, 2 x serial ports, 2 x CAN bus interface, ... Manufacturer: TQ Components, www.tq-group.de Date of Release: October (?) 1999 End of Life: not yet :-) URL: - module: - starter kit: - images: FPS850L: FingerPrint Sensor System (based on TQM850L) Manufacturer: IKENDI AG, Date of Release: November 1999 End of life: end 2000 ? URL: see TQM850L IVMS8: MPC860 based board used in the "Integrated Voice Mail System", Small Version (8 voice channels) Manufacturer: Speech Design, Date of Release: December 2000 (?) End of life: - URL: IVML24: MPC860 based board used in the "Integrated Voice Mail System", Large Version (24 voice channels) Manufacturer: Speech Design, Date of Release: March 2001 (?) End of life: - URL: HERMES: Hermes-Pro ISDN/LAN router with integrated 8 x hub Manufacturer: Multidata Gesellschaft fur Datentechnik und Informatik Date of Release: 2000 (?) End of life: - URL: IP860: VMEBus IP (Industry Pack) carrier board with MPC860 Manufacturer: MicroSys GmbH, Date of Release: ? End of life: - URL: PCU_E: PCU = Peripheral Controller Unit, Extended Manufacturer: Siemens AG, ICN (Information and Communication Networks) Date of Release: April 2001 End of life: August 2001 URL: n. a. config RPXCLASSIC bool "RPX-Classic" help The RPX-Classic is a single-board computer based on the Motorola MPC860. It features 16MB of DRAM and a variable amount of flash, I2C EEPROM, thermal monitoring, a PCMCIA slot, a DIP switch and two LEDs. Variants with Ethernet ports exist. Say Y here to support it directly. config BSEIP bool "BSE-IP" help Say Y here to support the Bright Star Engineering ipEngine SBC. This is a credit-card-sized device featuring a MPC823 processor, 26MB DRAM, 4MB flash, Ethernet, a 16K-gate FPGA, USB, an LCD/video controller, and two RS232 ports. config MPC8XXFADS bool "FADS" select FADS config MPC86XADS bool "MPC86XADS" help MPC86x Application Development System by Freescale Semiconductor. The MPC86xADS is meant to serve as a platform for s/w and h/w development around the MPC86X processor families. select FADS config MPC885ADS bool "MPC885ADS" help Freescale Semiconductor MPC885 Application Development System (ADS). Also known as DUET. The MPC885ADS is meant to serve as a platform for s/w and h/w development around the MPC885 processor family. config TQM823L bool "TQM823L" help Say Y here to support the TQM823L, one of an MPC8xx-based family of mini SBCs (half credit-card size) from TQ Components first released in late 1999. Technical references are at , and , and an image at . config TQM850L bool "TQM850L" help Say Y here to support the TQM850L, one of an MPC8xx-based family of mini SBCs (half credit-card size) from TQ Components first released in late 1999. Technical references are at , and , and an image at . config TQM855L bool "TQM855L" help Say Y here to support the TQM855L, one of an MPC8xx-based family of mini SBCs (half credit-card size) from TQ Components first released in late 1999. Technical references are at , and , and an image at . config TQM860L bool "TQM860L" help Say Y here to support the TQM860L, one of an MPC8xx-based family of mini SBCs (half credit-card size) from TQ Components first released in late 1999. Technical references are at , and , and an image at . config FPS850L bool "FPS850L" config IVMS8 bool "IVMS8" help Say Y here to support the Integrated Voice-Mail Small 8-channel SBC from Speech Design, released March 2001. The manufacturer's website is at . config IVML24 bool "IVML24" help Say Y here to support the Integrated Voice-Mail Large 24-channel SBC from Speech Design, released March 2001. The manufacturer's website is at . config HERMES_PRO bool "HERMES" config IP860 bool "IP860" config LWMON bool "LWMON" config PCU_E bool "PCU_E" config CCM bool "CCM" config LANTEC bool "LANTEC" config MBX bool "MBX" help MBX is a line of Motorola single-board computer based around the MPC821 and MPC860 processors, and intended for embedded-controller applications. Say Y here to support these boards directly. config WINCEPT bool "WinCept" help The Wincept 100/110 is a Motorola single-board computer based on the MPC821 PowerPC, introduced in 1998 and designed to be used in thin-client machines. Say Y to support it directly. endchoice menu "Freescale Ethernet driver platform-specific options" depends on FS_ENET config MPC8xx_SECOND_ETH bool "Second Ethernet channel" depends on (MPC885ADS || MPC86XADS) default y help This enables support for second Ethernet on MPC885ADS and MPC86xADS boards. The latter will use SCC1, for 885ADS you can select it below. choice prompt "Second Ethernet channel" depends on MPC8xx_SECOND_ETH default MPC8xx_SECOND_ETH_FEC2 config MPC8xx_SECOND_ETH_FEC2 bool "FEC2" depends on MPC885ADS help Enable FEC2 to serve as 2-nd Ethernet channel. Note that SMC2 (often 2-nd UART) will not work if this is enabled. config MPC8xx_SECOND_ETH_SCC1 bool "SCC1" depends on MPC86XADS select MPC8xx_SCC_ENET_FIXED help Enable SCC1 to serve as 2-nd Ethernet channel. Note that SMC1 (often 1-nd UART) will not work if this is enabled. config MPC8xx_SECOND_ETH_SCC3 bool "SCC3" depends on MPC885ADS help Enable SCC3 to serve as 2-nd Ethernet channel. Note that SMC1 (often 1-nd UART) will not work if this is enabled. endchoice config MPC8xx_SCC_ENET_FIXED depends on MPC8xx_SECOND_ETH_SCC default n bool "Use fixed MII-less mode for SCC Ethernet" endmenu choice prompt "Machine Type" depends on 6xx default PPC_PREP ---help--- Linux currently supports several different kinds of PowerPC-based machines: Apple Power Macintoshes and clones (such as the Motorola Starmax series), PReP (PowerPC Reference Platform) machines (such as the Motorola PowerStacks, Motorola cPCI/VME embedded systems, and some IBM RS/6000 systems), CHRP (Common Hardware Reference Platform) machines (including all of the recent IBM RS/6000 and pSeries machines), and several embedded PowerPC systems containing 4xx, 6xx, 7xx, 8xx, 74xx, and 82xx processors. Currently, the default option is to build a kernel which works on PReP. Note that support for Apple and CHRP machines is now only available with ARCH=powerpc, and has been removed from this menu. If you wish to build a kernel for an Apple or CHRP machine, exit this configuration process and re-run it with ARCH=powerpc. Select PReP if configuring for a PReP machine. config PPC_PREP bool "PReP" config KATANA bool "Artesyn-Katana" help Select KATANA if configuring an Artesyn KATANA 750i or 3750 cPCI board. config WILLOW bool "Cogent-Willow" config CPCI690 bool "Force-CPCI690" help Select CPCI690 if configuring a Force CPCI690 cPCI board. config POWERPMC250 bool "Force-PowerPMC250" config CHESTNUT bool "IBM 750FX Eval board or 750GX Eval board" help Select CHESTNUT if configuring an IBM 750FX Eval Board or a IBM 750GX Eval board. config SPRUCE bool "IBM-Spruce" select PPC_INDIRECT_PCI config HDPU bool "Sky-HDPU" help Select HDPU if configuring a Sky Computers Compute Blade. config HDPU_FEATURES depends on HDPU tristate "HDPU-Features" help Select to enable HDPU enhanced features. config EV64260 bool "Marvell-EV64260BP" help Select EV64260 if configuring a Marvell (formerly Galileo) EV64260BP Evaluation platform. config LOPEC bool "Motorola-LoPEC" select PPC_I8259 config MVME5100 bool "Motorola-MVME5100" select PPC_INDIRECT_PCI config PPLUS bool "Motorola-PowerPlus" select PPC_I8259 select PPC_INDIRECT_PCI config PRPMC750 bool "Motorola-PrPMC750" select PPC_INDIRECT_PCI config PRPMC800 bool "Motorola-PrPMC800" select PPC_INDIRECT_PCI config SANDPOINT bool "Motorola-Sandpoint" select PPC_I8259 help Select SANDPOINT if configuring for a Motorola Sandpoint X3 (any flavor). config RADSTONE_PPC7D bool "Radstone Technology PPC7D board" select PPC_I8259 config PAL4 bool "SBS-Palomar4" config EST8260 bool "EST8260" ---help--- The EST8260 is a single-board computer manufactured by Wind River Systems, Inc. (formerly Embedded Support Tools Corp.) and based on the MPC8260. Wind River Systems has a website at , but the EST8260 cannot be found on it and has probably been discontinued or rebadged. config SBC82xx bool "SBC82xx" ---help--- SBC PowerQUICC II, single-board computer with MPC82xx CPU Manufacturer: Wind River Systems, Inc. Date of Release: May 2003 End of Life: - URL: config SBS8260 bool "SBS8260" config RPX8260 bool "RPXSUPER" config TQM8260 bool "TQM8260" ---help--- MPC8260 based module, little larger than credit card, up to 128 MB global + 64 MB local RAM, 32 MB Flash, 32 kB EEPROM, 256 kB L@ Cache, 10baseT + 100baseT Ethernet, 2 x serial ports, ... Manufacturer: TQ Components, www.tq-group.de Date of Release: June 2001 End of Life: not yet :-) URL: config ADS8272 bool "ADS8272" config PQ2FADS bool "Freescale-PQ2FADS" help Select PQ2FADS if you wish to configure for a Freescale PQ2FADS board (-VR or -ZU). config LITE5200 bool "Freescale LITE5200 / (IceCube)" select PPC_MPC52xx help Support for the LITE5200 dev board for the MPC5200 from Freescale. This is for the LITE5200 version 2.0 board. Don't know if it changes much but it's only been tested on this board version. I think this board is also known as IceCube. config LITE5200B bool "Freescale LITE5200B" depends on LITE5200 help Support for the LITE5200B dev board for the MPC5200 from Freescale. This is the new board with 2 PCI slots. config MPC834x_SYS bool "Freescale MPC834x SYS" help This option enables support for the MPC 834x SYS evaluation board. Be aware that PCI buses can only function when SYS board is plugged into the PIB (Platform IO Board) board from Freescale which provide 3 PCI slots. The PIBs PCI initialization is the bootloader's responsibility. config EV64360 bool "Marvell-EV64360BP" help Select EV64360 if configuring a Marvell EV64360BP Evaluation platform. endchoice config PQ2ADS bool depends on ADS8272 default y config TQM8xxL bool depends on 8xx && (TQM823L || TQM850L || FPS850L || TQM855L || TQM860L) default y config EMBEDDEDBOOT bool depends on 8xx || 8260 default y config PPC_MPC52xx bool config 8260 bool "CPM2 Support" if WILLOW depends on 6xx default y if TQM8260 || RPX8260 || EST8260 || SBS8260 || SBC82xx || PQ2FADS help The MPC8260 is a typical embedded CPU made by Motorola. Selecting this option means that you wish to build a kernel for a machine with an 8260 class CPU. config 8272 bool depends on 6xx default y if ADS8272 select 8260 help The MPC8272 CPM has a different internal dpram setup than other CPM2 devices config 83xx bool default y if MPC834x_SYS config MPC834x bool default y if MPC834x_SYS config PPC_83xx bool default y if 83xx config CPM1 bool depends on 8xx default y help The CPM1 (Communications Processor Module) is a coprocessor on embedded CPUs made by Motorola. Selecting this option means that you wish to build a kernel for a machine with a CPM1 coprocessor on it (8xx, 827x, 8560). config CPM2 bool depends on 8260 || MPC8560 || MPC8555 default y help The CPM2 (Communications Processor Module) is a coprocessor on embedded CPUs made by Motorola. Selecting this option means that you wish to build a kernel for a machine with a CPM2 coprocessor on it (826x, 827x, 8560). config PPC_GEN550 bool depends on SANDPOINT || SPRUCE || PPLUS || \ PRPMC750 || PRPMC800 || LOPEC || \ (EV64260 && !SERIAL_MPSC) || CHESTNUT || RADSTONE_PPC7D || \ 83xx default y config FORCE bool depends on 6xx && POWERPMC250 default y config GT64260 bool depends on EV64260 || CPCI690 default y config MV64360 # Really MV64360 & MV64460 bool depends on CHESTNUT || KATANA || RADSTONE_PPC7D || HDPU || EV64360 default y config MV64X60 bool depends on (GT64260 || MV64360) select PPC_INDIRECT_PCI default y config MV643XX_ETH_0 bool depends on MV643XX_ETH && (KATANA || RADSTONE_PPC7D || EV64360 || HDPU) default y config MV643XX_ETH_1 bool depends on MV643XX_ETH && (KATANA || RADSTONE_PPC7D || EV64360) default y config MV643XX_ETH_2 bool depends on MV643XX_ETH && (KATANA || RADSTONE_PPC7D || EV64360) default y menu "Set bridge options" depends on MV64X60 config NOT_COHERENT_CACHE bool "Turn off Cache Coherency" default n help Some 64x60 bridges lock up when trying to enforce cache coherency. When this option is selected, cache coherency will be turned off. Note that this can cause other problems (e.g., stale data being speculatively loaded via a cached mapping). Use at your own risk. config MV64X60_BASE hex "Set bridge base used by firmware" default "0xf1000000" help A firmware can leave the base address of the bridge's registers at a non-standard location. If so, set this value to reflect the address of that non-standard location. config MV64X60_NEW_BASE hex "Set bridge base used by kernel" default "0xf1000000" help If the current base address of the bridge's registers is not where you want it, set this value to the address that you want it moved to. endmenu config NONMONARCH_SUPPORT bool "Enable Non-Monarch Support" depends on PRPMC800 config HARRIER bool depends on PRPMC800 default y config EPIC_SERIAL_MODE bool depends on 6xx && (LOPEC || SANDPOINT) default y config MPC10X_BRIDGE bool depends on POWERPMC250 || LOPEC || SANDPOINT select PPC_INDIRECT_PCI default y config MPC10X_OPENPIC bool depends on POWERPMC250 || LOPEC || SANDPOINT default y config MPC10X_STORE_GATHERING bool "Enable MPC10x store gathering" depends on MPC10X_BRIDGE config SANDPOINT_ENABLE_UART1 bool "Enable DUART mode on Sandpoint" depends on SANDPOINT help If this option is enabled then the MPC824x processor will run in DUART mode instead of UART mode. config HARRIER_STORE_GATHERING bool "Enable Harrier store gathering" depends on HARRIER config MVME5100_IPMC761_PRESENT bool "MVME5100 configured with an IPMC761" depends on MVME5100 select PPC_I8259 config SPRUCE_BAUD_33M bool "Spruce baud clock support" depends on SPRUCE config PC_KEYBOARD bool "PC PS/2 style Keyboard" depends on 4xx || CPM2 config PPCBUG_NVRAM bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC default y if PPC_PREP config SMP depends on PPC_STD_MMU bool "Symmetric multi-processing support" ---help--- This enables support for systems with more than one CPU. If you have a system with only one CPU, say N. If you have a system with more than one CPU, say Y. Note that the kernel does not currently support SMP machines with 603/603e/603ev or PPC750 ("G3") processors since they have inadequate hardware support for multiprocessor operation. If you say N here, the kernel will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on single-processor machines. On a single-processor machine, the kernel will run faster if you say N here. If you don't know what to do here, say N. config IRQ_ALL_CPUS bool "Distribute interrupts on all CPUs by default" depends on SMP && !MV64360 help This option gives the kernel permission to distribute IRQs across multiple CPUs. Saying N here will route all IRQs to the first CPU. Generally saying Y is safe, although some problems have been reported with SMP Power Macintoshes with this option enabled. config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 depends on SMP default "4" config HIGHMEM bool "High memory support" config ARCH_POPULATES_NODE_MAP def_bool y source kernel/Kconfig.hz source kernel/Kconfig.preempt source "mm/Kconfig" source "fs/Kconfig.binfmt" config PREP_RESIDUAL bool "Support for PReP Residual Data" depends on PPC_PREP help Some PReP systems have residual data passed to the kernel by the firmware. This allows detection of memory size, devices present and other useful pieces of information. Sometimes this information is not present or incorrect, in which case it could lead to the machine behaving incorrectly. If this happens, either disable PREP_RESIDUAL or pass the 'noresidual' option to the kernel. If you are running a PReP system, say Y here, otherwise say N. config PROC_PREPRESIDUAL bool "Support for reading of PReP Residual Data in /proc" depends on PREP_RESIDUAL && PROC_FS help Enabling this option will create a /proc/residual file which allows you to get at the residual data on PReP systems. You will need a tool (lsresidual) to parse it. If you aren't on a PReP system, you don't want this. config CMDLINE_BOOL bool "Default bootloader kernel arguments" config CMDLINE string "Initial kernel command string" depends on CMDLINE_BOOL default "console=ttyS0,9600 console=tty0 root=/dev/sda2" help On some platforms, there is currently no way for the boot loader to pass arguments to the kernel. For these platforms, you can supply some command-line options at build time by entering them here. In most cases you will need to specify the root device here. if BROKEN source kernel/power/Kconfig endif config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on PROC_FS default y help This kernel feature is useful for number crunching applications that may need to compute untrusted bytecode during their execution. By using pipes or other transports made available to the process as file descriptors supporting the read/write syscalls, it's possible to isolate those applications in their own address space using seccomp. Once seccomp is enabled via /proc//seccomp, it cannot be disabled and the task is only allowed to execute a few safe syscalls defined by each seccomp mode. If unsure, say Y. Only embedded should say N here. endmenu config ISA_DMA_API bool default y menu "Bus options" config ISA bool "Support for ISA-bus hardware" depends on PPC_PREP help Find out whether you have ISA slots on your motherboard. ISA is the name of a bus system, i.e. the way the CPU talks to the other stuff inside your box. If you have an Apple machine, say N here; if you have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If you have an embedded board, consult your board documentation. config ZONE_DMA bool default y config GENERIC_ISA_DMA bool depends on 6xx && !CPM2 default y config PPC_I8259 bool default y if 85xx || PPC_PREP default n config PPC_INDIRECT_PCI bool depends on PCI default y if 40x || 44x || 85xx || 83xx || PPC_PREP default n config EISA bool help The Extended Industry Standard Architecture (EISA) bus is a bus architecture used on some older intel-based PCs. config SBUS bool # Yes MCA RS/6000s exist but Linux-PPC does not currently support any config MCA bool config PCI bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx default y if !40x && !CPM2 && !8xx && !83xx && !85xx default PCI_QSPAN if !4xx && !CPM2 && 8xx help Find out whether your system includes a PCI bus. PCI is the name of a bus system, i.e. the way the CPU talks to the other stuff inside your box. If you say Y here, the kernel will include drivers and infrastructure code to support PCI bus devices. config PCI_DOMAINS def_bool PCI config PCI_SYSCALL def_bool PCI config MPC83xx_PCI2 bool "Support for 2nd PCI host controller" depends on PCI && MPC834x default y if MPC834x_SYS config PCI_QSPAN bool "QSpan PCI" depends on !4xx && !CPM2 && 8xx select PPC_I8259 help Say Y here if you have a system based on a Motorola 8xx-series embedded processor with a QSPAN PCI interface, otherwise say N. config PCI_8260 bool depends on PCI && 8260 select PPC_INDIRECT_PCI default y config 8260_PCI9 bool "Enable workaround for MPC826x erratum PCI 9" depends on PCI_8260 && !ADS8272 default y choice prompt "IDMA channel for PCI 9 workaround" depends on 8260_PCI9 config 8260_PCI9_IDMA1 bool "IDMA1" config 8260_PCI9_IDMA2 bool "IDMA2" config 8260_PCI9_IDMA3 bool "IDMA3" config 8260_PCI9_IDMA4 bool "IDMA4" endchoice source "drivers/pci/Kconfig" source "drivers/pcmcia/Kconfig" config RAPIDIO bool "RapidIO support" if MPC8540 || MPC8560 help If you say Y here, the kernel will include drivers and infrastructure code to support RapidIO interconnect devices. source "drivers/rapidio/Kconfig" endmenu menu "Advanced setup" config ADVANCED_OPTIONS bool "Prompt for advanced kernel configuration options" help This option will enable prompting for a variety of advanced kernel configuration options. These options can cause the kernel to not work if they are set incorrectly, but can be used to optimize certain aspects of kernel memory management. Unless you know what you are doing, say N here. comment "Default settings for advanced configuration options are used" depends on !ADVANCED_OPTIONS config HIGHMEM_START_BOOL bool "Set high memory pool address" depends on ADVANCED_OPTIONS && HIGHMEM help This option allows you to set the base address of the kernel virtual area used to map high memory pages. This can be useful in optimizing the layout of kernel virtual memory. Say N here unless you know what you are doing. config HIGHMEM_START hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL default "0xfe000000" config LOWMEM_SIZE_BOOL bool "Set maximum low memory" depends on ADVANCED_OPTIONS help This option allows you to set the maximum amount of memory which will be used as "low memory", that is, memory which the kernel can access directly, without having to set up a kernel virtual mapping. This can be useful in optimizing the layout of kernel virtual memory. Say N here unless you know what you are doing. config LOWMEM_SIZE hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL default "0x30000000" config KERNEL_START_BOOL bool "Set custom kernel base address" depends on ADVANCED_OPTIONS help This option allows you to set the kernel virtual address at which the kernel will map low memory (the kernel image will be linked at this address). This can be useful in optimizing the virtual memory layout of the system. Say N here unless you know what you are doing. config KERNEL_START hex "Virtual address of kernel base" if KERNEL_START_BOOL default "0xc0000000" config TASK_SIZE_BOOL bool "Set custom user task size" depends on ADVANCED_OPTIONS help This option allows you to set the amount of virtual address space allocated to user tasks. This can be useful in optimizing the virtual memory layout of the system. Say N here unless you know what you are doing. config TASK_SIZE hex "Size of user task space" if TASK_SIZE_BOOL default "0x80000000" config CONSISTENT_START_BOOL bool "Set custom consistent memory pool address" depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE help This option allows you to set the base virtual address of the consistent memory pool. This pool of virtual memory is used to make consistent memory allocations. config CONSISTENT_START hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL default "0xff100000" if NOT_COHERENT_CACHE config CONSISTENT_SIZE_BOOL bool "Set custom consistent memory pool size" depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE help This option allows you to set the size of the consistent memory pool. This pool of virtual memory is used to make consistent memory allocations. config CONSISTENT_SIZE hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL default "0x00200000" if NOT_COHERENT_CACHE config BOOT_LOAD_BOOL bool "Set the boot link/load address" depends on ADVANCED_OPTIONS && !PPC_PREP help This option allows you to set the initial load address of the zImage or zImage.initrd file. This can be useful if you are on a board which has a small amount of memory. Say N here unless you know what you are doing. config BOOT_LOAD hex "Link/load address for booting" if BOOT_LOAD_BOOL default "0x00400000" if 40x || 8xx || 8260 default "0x01000000" if 44x default "0x00800000" config PIN_TLB bool "Pinned Kernel TLBs (860 ONLY)" depends on ADVANCED_OPTIONS && 8xx endmenu source "net/Kconfig" source "drivers/Kconfig" source "fs/Kconfig" source "arch/ppc/8xx_io/Kconfig" source "arch/ppc/8260_io/Kconfig" menu "IBM 40x options" depends on 40x config SERIAL_SICC bool "SICC Serial port" depends on STB03xxx config UART1_DFLT_CONSOLE bool depends on SERIAL_SICC && UART0_TTYS1 default y config SERIAL_SICC_CONSOLE bool depends on SERIAL_SICC && UART0_TTYS1 default y endmenu source "lib/Kconfig" source "arch/powerpc/oprofile/Kconfig" source "arch/ppc/Kconfig.debug" source "security/Kconfig" source "crypto/Kconfig"