Wikia

How To Wiki

How to configure the Linux kernel/arch/ppc

< How to configure the Linux kernel | arch

1,794pages on
this wiki
Talk0

Howto configure the Linux kernel / arch / ppc


For a description of the syntax of this configuration file,
see Documentation/kbuild/kconfig-language.txt.

"Linux/PowerPC Kernel Configuration"


  • Option: MMU
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y


  • Option: UID16
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)


  • Option: GENERIC_HARDIRQS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y


  • Option: RWSEM_GENERIC_SPINLOCK
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)


  • Option: RWSEM_XCHGADD_ALGORITHM
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y


  • Option: GENERIC_CALIBRATE_DELAY
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y


  • Option: PPC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y


  • Option: PPC32
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y
All PPCs use generic nvram driver through ppc_md


  • Option: GENERIC_NVRAM
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y


  • Option: SCHED_NO_NO_OMIT_FRAME_POINTER
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y


  • Option: ARCH_MAY_HAVE_PC_FDC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y


ProcessorEdit

"Processor Type"

    • default 6xx


  • Option: 6xx
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) 6xx/7xx/74xx/52xx/82xx/83xx
    • select PPC_FPU
      There are four types of PowerPC chips supported. The more common types (601, 603, 604, 740, 750, 7400), the Motorola embedded versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the IBM embedded versions (403 and 405) and the high end 64 bit Power processors (POWER 3, POWER4, and IBM 970 also known as G5) Unless you are building a kernel for one of the embedded processor systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx. Note that the kernel runs in 32-bit mode even on 64-bit chips. Also note that because the 52xx, 82xx, & 83xx family has a 603e core, specific support for that chipset is asked later on.


  • Option: 40x
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) 40x


  • Option: 44x
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) 44x


  • Option: POWER3
    • Kernel Versions: 2.6.15.6 ...
    • select PPC_FPU
    • (on/off) POWER3


  • Option: POWER4
    • Kernel Versions: 2.6.15.6 ...
    • select PPC_FPU
    • (on/off) POWER4 and 970 (G5)


  • Option: 8xx
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) 8xx


  • Option: E200
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) e200


  • Option: E500
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) e500



  • Option: PPC_FPU
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)


  • Option: BOOKE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on E200 || E500
    • default y


  • Option: FSL_BOOKE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on E200 || E500
    • default y


  • Option: PTE_64BIT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 44x || E500
    • default y if 44x
    • default y if E500 && PHYS_64BIT


  • Option: PHYS_64BIT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) 'Large physical address support' if E500
    • depends on 44x || E500
    • default y if 44x
      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.


  • Option: ALTIVEC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) AltiVec Support
    • depends on 6xx || POWER4
    • depends on !8260 && !83xx
      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.


  • Option: SPE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) SPE Support
    • depends on E200 || E500
      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.


  • Option: TAU
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Thermal Management Support
    • depends on 6xx && !8260 && !83xx
      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.


  • Option: TAU_INT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Interrupt driven TAU driver (DANGEROUS)
    • depends on TAU
      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.


  • Option: TAU_AVERAGE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Average high and low temp
    • depends on TAU
      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.


  • Option: MATH_EMULATION
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Math emulation
    • depends on 4xx || 8xx || E200 || E500
      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.


  • Option: KEXEC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) kexec system call (EXPERIMENTAL)
    • depends on EXPERIMENTAL
      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 indepedent 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.



  • Option: CPU_FREQ_PMAC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Support for Apple PowerBooks
    • depends on CPU_FREQ && ADB_PMU
    • select CPU_FREQ_TABLE
      This adds support for frequency switching on Apple PowerBooks, this currently includes some models of iBook & Titanium PowerBook.


  • Option: PPC601_SYNC_FIX
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Workarounds for PPC601 bugs
    • depends on 6xx && (PPC_PREP || PPC_PMAC)
      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.


  • Option: HOTPLUG_CPU
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Support for enabling/disabling CPUs
    • depends on SMP && HOTPLUG && EXPERIMENTAL && PPC_PMAC
      Say Y here to be able to disable and re-enable individual CPUs at runtime on SMP machines.
      Say N if you are unsure.




  • Option: PPC64BRIDGE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on POWER3 || POWER4
    • default y


  • Option: PPC_STD_MMU
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 6xx || POWER3 || POWER4
    • default y


  • Option: NOT_COHERENT_CACHE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 4xx || 8xx || E200
    • default y


Platform optionsEdit

  • Option: FADS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)


"8xx Machine Type"

    • depends on 8xx
    • default RPXLITE



  • Option: RPXCLASSIC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) RPX-Classic
      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.


  • Option: BSEIP
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) BSE-IP
      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.


  • Option: MPC8XXFADS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) FADS
    • select FADS


  • Option: MPC86XADS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) MPC86XADS
      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


  • Option: MPC885ADS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) MPC885ADS
      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.






  • Option: FPS850L
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) FPS850L


  • Option: IVMS8
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IVMS8
      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 <http://www.speech-design.de/>.


  • Option: IVML24
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IVML24
      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 <http://www.speech-design.de/>.


  • Option: HERMES_PRO
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) HERMES


  • Option: IP860
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IP860


  • Option: LWMON
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) LWMON


  • Option: PCU_E
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) PCU_E


  • Option: CCM
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) CCM


  • Option: LANTEC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) LANTEC


  • Option: MBX
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) MBX
      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.


  • Option: WINCEPT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) WinCept
      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.



"Machine Type"

    • depends on 6xx || POWER3 || POWER4
    • default PPC_MULTIPLATFORM
      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 the first three.
      Select CHRP/PowerMac/PReP if configuring for an IBM RS/6000 or pSeries machine, a Power Macintosh (including iMacs, iBooks and Powerbooks), or a PReP machine.
      Select Gemini if configuring for a Synergy Microsystems' Gemini series Single Board Computer. More information is available at: <http://www.synergymicro.com/PressRel/97_10_15.html>.
      Select APUS if configuring for a PowerUP Amiga. More information is available at: <http://linux-apus.sourceforge.net/>.


  • Option: PPC_MULTIPLATFORM
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) CHRP/PowerMac/PReP


  • Option: APUS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Amiga-APUS
    • depends on BROKEN
      Select APUS if configuring for a PowerUP Amiga. More information is available at: <http://linux-apus.sourceforge.net/>.


  • Option: KATANA
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Artesyn-Katana
      Select KATANA if configuring an Artesyn KATANA 750i or 3750 cPCI board.


  • Option: WILLOW
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Cogent-Willow


  • Option: CPCI690
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Force-CPCI690
      Select CPCI690 if configuring a Force CPCI690 cPCI board.


  • Option: POWERPMC250
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Force-PowerPMC250


  • Option: CHESTNUT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IBM 750FX Eval board or 750GX Eval board
      Select CHESTNUT if configuring an IBM 750FX Eval Board or an IBM 750GX Eval board.


  • Option: SPRUCE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IBM-Spruce
    • select PPC_INDIRECT_PCI


  • Option: HDPU
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Sky-HDPU
      Select HDPU if configuring a Sky Computers Compute Blade.


  • Option: HDPU_FEATURES
    • Kernel Versions: 2.6.15.6 ...
    • depends HDPU
    • (on/off/module) HDPU-Features
      Select to enable HDPU enhanced features.


  • Option: EV64260
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Marvell-EV64260BP
      Select EV64260 if configuring a Marvell (formerly Galileo) EV64260BP Evaluation platform.


  • Option: LOPEC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Motorola-LoPEC
    • select PPC_I8259


  • Option: MVME5100
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Motorola-MVME5100
    • select PPC_INDIRECT_PCI


  • Option: PPLUS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Motorola-PowerPlus
    • select PPC_I8259
    • select PPC_INDIRECT_PCI


  • Option: PRPMC750
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Motorola-PrPMC750
    • select PPC_INDIRECT_PCI


  • Option: PRPMC800
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Motorola-PrPMC800
    • select PPC_INDIRECT_PCI


  • Option: SANDPOINT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Motorola-Sandpoint
    • select PPC_I8259
      Select SANDPOINT if configuring for a Motorola Sandpoint X3 (any flavor).


  • Option: RADSTONE_PPC7D
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Radstone Technology PPC7D board
    • select PPC_I8259


  • Option: PAL4
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) SBS-Palomar4


  • Option: GEMINI
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Synergy-Gemini
    • depends on BROKEN
    • select PPC_INDIRECT_PCI
      Select Gemini if configuring for a Synergy Microsystems' Gemini series Single Board Computer. More information is available at: <http://www.synergymicro.com/PressRel/97_10_15.html>.


  • Option: EST8260
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) EST8260
      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 <http://www.windriver.com/>, but the EST8260 cannot be found on it and has probably been discontinued or rebadged.


  • Option: SBC82xx
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) SBC82xx
      SBC PowerQUICC II, single-board computer with MPC82xx CPU Manufacturer: Wind River Systems, Inc. Date of Release: May 2003 End of Life: - URL: <http://www.windriver.com/>


  • Option: SBS8260
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) SBS8260


  • Option: RPX8260
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) RPXSUPER


  • Option: TQM8260
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) TQM8260
      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: <http://www.denx.de/PDF/TQM82xx_SPEC_Rev005.pdf>


  • Option: ADS8272
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) ADS8272


  • Option: PQ2FADS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Freescale-PQ2FADS
      Select PQ2FADS if you wish to configure for a Freescale PQ2FADS board (-VR or -ZU).


  • Option: LITE5200
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Freescale LITE5200 / (IceCube)
    • select PPC_MPC52xx
      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.


  • Option: MPC834x_SYS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Freescale MPC834x SYS
      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.


  • Option: EV64360
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Marvell-EV64360BP
      Select EV64360 if configuring a Marvell EV64360BP Evaluation platform.



  • Option: PQ2ADS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on ADS8272
    • default y


  • Option: TQM8xxL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 8xx && (TQM823L || TQM850L || FPS850L || TQM855L || TQM860L)
    • default y


  • Option: EMBEDDEDBOOT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 8xx || 8260
    • default y


  • Option: PPC_MPC52xx
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)


  • Option: 8260
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) CPM2 Support if WILLOW
    • depends on 6xx
    • default y if TQM8260 || RPX8260 || EST8260 || SBS8260 || SBC82xx || PQ2FADS
      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.


  • Option: 8272
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 6xx
    • default y if ADS8272
    • select 8260
      The MPC8272 CPM has a different internal dpram setup than other CPM2 devices


  • Option: 83xx
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y if MPC834x_SYS


  • Option: MPC834x
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y if MPC834x_SYS


  • Option: CPM1
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 8xx
    • default y
      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).


  • Option: CPM2
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 8260 || MPC8560 || MPC8555
    • default y
      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).


  • Option: PPC_CHRP
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on PPC_MULTIPLATFORM
    • select PPC_I8259
    • select PPC_INDIRECT_PCI
    • default y


  • Option: PPC_PMAC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on PPC_MULTIPLATFORM
    • select PPC_INDIRECT_PCI
    • default y


  • Option: PPC_PMAC64
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on PPC_PMAC && POWER4
    • default y


  • Option: PPC_PREP
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on PPC_MULTIPLATFORM
    • select PPC_I8259
    • select PPC_INDIRECT_PCI
    • default y


  • Option: PPC_OF
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on PPC_PMAC || PPC_CHRP
    • default y


  • Option: PPC_GEN550
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on SANDPOINT || SPRUCE || PPLUS || \

750 || PRPMC800 || LOPEC || \ (EV64260 && !SERIAL_MPSC) || CHESTNUT || RADSTONE_PPC7D || \ 83xx

    • default y


  • Option: FORCE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 6xx && POWERPMC250
    • default y


  • Option: GT64260
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on EV64260 || CPCI690
    • default y


  • Option: MV64360# Really MV64360 & MV64460
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on CHESTNUT || KATANA || RADSTONE_PPC7D || HDPU || EV64360
    • default y


  • Option: MV64X60
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on (GT64260 || MV64360)
    • select PPC_INDIRECT_PCI
    • default y

Set bridge optionsEdit

    • depends on MV64X60


  • Option: NOT_COHERENT_CACHE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Turn off Cache Coherency
    • default n
      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.


  • Option: MV64X60_BASE
    • Kernel Versions: 2.6.15.6 ...

"Set bridge base used by firmware"

    • default "0xf1000000"
      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.


  • Option: MV64X60_NEW_BASE
    • Kernel Versions: 2.6.15.6 ...

"Set bridge base used by kernel"

    • default "0xf1000000"
      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.



  • Option: NONMONARCH_SUPPORT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Enable Non-Monarch Support
    • depends on PRPMC800


  • Option: HARRIER
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on PRPMC800
    • default y


  • Option: EPIC_SERIAL_MODE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on 6xx && (LOPEC || SANDPOINT)
    • default y


  • Option: MPC10X_BRIDGE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on POWERPMC250 || LOPEC || SANDPOINT
    • select PPC_INDIRECT_PCI
    • default y


  • Option: MPC10X_OPENPIC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on POWERPMC250 || LOPEC || SANDPOINT
    • default y


  • Option: MPC10X_STORE_GATHERING
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Enable MPC10x store gathering
    • depends on MPC10X_BRIDGE


  • Option: SANDPOINT_ENABLE_UART1
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Enable DUART mode on Sandpoint
    • depends on SANDPOINT
      If this option is enabled then the MPC824x processor will run in DUART mode instead of UART mode.


  • Option: HARRIER_STORE_GATHERING
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Enable Harrier store gathering
    • depends on HARRIER


  • Option: MVME5100_IPMC761_PRESENT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) MVME5100 configured with an IPMC761
    • depends on MVME5100
    • select PPC_I8259


  • Option: SPRUCE_BAUD_33M
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Spruce baud clock support
    • depends on SPRUCE


  • Option: PC_KEYBOARD
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) PC PS/2 style Keyboard
    • depends on 4xx || CPM2


  • Option: PPCBUG_NVRAM
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Enable reading PPCBUG NVRAM during boot if PPLUS || LOPEC
    • default y if PPC_PREP


  • Option: SMP
    • Kernel Versions: 2.6.15.6 ...
    • depends on PPC_STD_MMU
    • (on/off) Symmetric multi-processing support
      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.


  • Option: IRQ_ALL_CPUS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Distribute interrupts on all CPUs by default
    • depends on SMP && !MV64360
      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.


  • Option: NR_CPUS
    • Kernel Versions: 2.6.15.6 ...

"Maximum number of CPUs (2-32)" 2 32

    • depends on SMP
    • default "4"


  • Option: HIGHMEM
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) High memory support






  • Option: PROC_DEVICETREE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Support for Open Firmware device tree in /proc
    • depends on PPC_OF && PROC_FS
      This option adds a device-tree directory under /proc which contains an image of the device tree that the kernel copies from Open Firmware. If unsure, say Y here.


  • Option: PREP_RESIDUAL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Support for PReP Residual Data
    • depends on PPC_PREP
      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.


  • Option: PROC_PREPRESIDUAL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Support for reading of PReP Residual Data in /proc
    • depends on PREP_RESIDUAL && PROC_FS
      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.


  • Option: CMDLINE_BOOL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Default bootloader kernel arguments


  • Option: CMDLINE
    • Kernel Versions: 2.6.15.6 ...

"Initial kernel command string"

    • depends on CMDLINE_BOOL
    • default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
      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.


  • Option: AMIGA
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on APUS
    • default y
      This option enables support for the Amiga series of computers.


  • Option: ZORRO
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on APUS
    • default y
      This enables support for the Zorro bus in the Amiga. If you have expansion cards in your Amiga that conform to the Amiga AutoConfig(tm) specification, say Y, otherwise N. Note that even expansion cards that do not fit in the Zorro slots but fit in e.g. the CPU slot may fall in this category, so you have to say Y to let Linux use these.


  • Option: ABSTRACT_CONSOLE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on APUS
    • default y


  • Option: APUS_FAST_EXCEPT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on APUS
    • default y


  • Option: AMIGA_PCMCIA
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Amiga 1200/600 PCMCIA support
    • depends on APUS && EXPERIMENTAL
      Include support in the kernel for pcmcia on Amiga 1200 and Amiga 600. If you intend to use pcmcia cards say Y; otherwise say N.


  • Option: AMIGA_BUILTIN_SERIAL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) Amiga builtin serial support
    • depends on APUS
      If you want to use your Amiga's built-in serial port in Linux, answer Y.
      To compile this driver as a module, choose M here.


  • Option: GVPIOEXT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) GVP IO-Extender support
    • depends on APUS
      If you want to use a GVP IO-Extender serial card in Linux, say Y. Otherwise, say N.


  • Option: GVPIOEXT_LP
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) GVP IO-Extender parallel printer support
    • depends on GVPIOEXT
      Say Y to enable driving a printer from the parallel port on your GVP IO-Extender card, N otherwise.


  • Option: GVPIOEXT_PLIP
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) GVP IO-Extender PLIP support
    • depends on GVPIOEXT
      Say Y to enable doing IP over the parallel port on your GVP IO-Extender card, N otherwise.


  • Option: MULTIFACE_III_TTY
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) Multiface Card III serial support
    • depends on APUS
      If you want to use a Multiface III card's serial port in Linux, answer Y.
      To compile this driver as a module, choose M here.


  • Option: A2232
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) Commodore A2232 serial support (EXPERIMENTAL)
    • depends on EXPERIMENTAL && APUS
      This option supports the 2232 7-port serial card shipped with the Amiga 2000 and other Zorro-bus machines, dating from 1989. At a max of 19,200 bit/s, the ports are served by a 6551 ACIA UART chip each, plus a 8520 CIA, and a master 6502 CPU and buffer as well. The ports were connected with 8 pin DIN connectors on the card bracket, for which 8 pin to DB25 adapters were supplied. The card also had jumpers internally to toggle various pinning configurations.
      This driver can be built as a module; but then "generic_serial" will also be built as a module. This has to be loaded before ser_a2232. If you want to do this, answer M here.


  • Option: WHIPPET_SERIAL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) Hisoft Whippet PCMCIA serial support
    • depends on AMIGA_PCMCIA
      HiSoft has a web page at <http://www.hisoft.co.uk/>, but there is no listing for the Whippet in their Amiga section.


  • Option: APNE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off/module) PCMCIA NE2000 support
    • depends on AMIGA_PCMCIA
      If you have a PCMCIA NE2000 compatible adapter, say Y. Otherwise, say N.
      To compile this driver as a module, choose M here: the module will be called apne.


  • Option: SERIAL_CONSOLE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Support for serial port console
    • depends on APUS && (AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y)


  • Option: HEARTBEAT
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Use power LED as a heartbeat
    • depends on APUS
      Use the power-on LED on your machine as a load meter. The exact behavior is platform-dependent, but normally the flash frequency is a hyperbolic function of the 5-minute load average.


  • Option: PROC_HARDWARE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) /proc/hardware support
    • depends on APUS


!44x || BROKEN




  • Option: SECCOMP
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Enable seccomp to safely compute untrusted bytecode
    • depends on PROC_FS
    • default y
      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/<pid>/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.



  • Option: ISA_DMA_API
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y

Bus optionsEdit

  • Option: ISA
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Support for ISA-bus hardware
    • depends on PPC_PREP || PPC_CHRP
    • select PPC_I8259
      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.


  • Option: GENERIC_ISA_DMA
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on POWER3 || POWER4 || 6xx && !CPM2
    • default y


  • Option: PPC_I8259
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default y if 85xx
    • default n


  • Option: PPC_INDIRECT_PCI
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on PCI
    • default y if 40x || 44x || 85xx || 83xx
    • default n


  • Option: EISA
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
      The Extended Industry Standard Architecture (EISA) bus is a bus architecture used on some older intel-based PCs.


  • Option: SBUS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
Yes MCA RS/6000s exist but Linux-PPC does not currently support any


  • Option: MCA
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)


  • Option: PCI
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) PCI support if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx
    • default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
    • default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
    • default PCI_QSPAN if !4xx && !CPM2 && 8xx
      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.


  • Option: PCI_DOMAINS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • default PCI


  • Option: MPC83xx_PCI2
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Supprt for 2nd PCI host controller
    • depends on PCI && MPC834x
    • default y if MPC834x_SYS


  • Option: PCI_QSPAN
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) QSpan PCI
    • depends on !4xx && !CPM2 && 8xx
    • select PPC_I8259
      Say Y here if you have a system based on a Motorola 8xx-series embedded processor with a QSPAN PCI interface, otherwise say N.


  • Option: PCI_8260
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on PCI && 8260
    • select PPC_INDIRECT_PCI
    • default y


  • Option: 8260_PCI9
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Enable workaround for MPC826x erratum PCI 9
    • depends on PCI_8260 && !ADS8272
    • default y


" IDMA channel for PCI 9 workaround"

    • depends on 8260_PCI9


  • Option: 8260_PCI9_IDMA1
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IDMA1


  • Option: 8260_PCI9_IDMA2
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IDMA2


  • Option: 8260_PCI9_IDMA3
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IDMA3


  • Option: 8260_PCI9_IDMA4
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) IDMA4



  • Option: PCI_PERMEDIA
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) PCI for Permedia2
    • depends on !4xx && !8xx && APUS




  • Option: RAPIDIO
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) RapidIO support if MPC8540 || MPC8560
      If you say Y here, the kernel will include drivers and infrastructure code to support RapidIO interconnect devices.



Advanced setupEdit

  • Option: ADVANCED_OPTIONS
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Prompt for advanced kernel configuration options
      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.

"Default settings for advanced configuration options are used"

    • depends on !ADVANCED_OPTIONS


  • Option: HIGHMEM_START_BOOL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Set high memory pool address
    • depends on ADVANCED_OPTIONS && HIGHMEM
      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.


  • Option: HIGHMEM_START
    • Kernel Versions: 2.6.15.6 ...

"Virtual start address of high memory pool" if HIGHMEM_START_BOOL

    • default "0xfe000000"


  • Option: LOWMEM_SIZE_BOOL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Set maximum low memory
    • depends on ADVANCED_OPTIONS
      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.


  • Option: LOWMEM_SIZE
    • Kernel Versions: 2.6.15.6 ...

"Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL

    • default "0x30000000"


  • Option: KERNEL_START_BOOL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Set custom kernel base address
    • depends on ADVANCED_OPTIONS
      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.


  • Option: KERNEL_START
    • Kernel Versions: 2.6.15.6 ...

"Virtual address of kernel base" if KERNEL_START_BOOL

    • default "0xc0000000"


  • Option: TASK_SIZE_BOOL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Set custom user task size
    • depends on ADVANCED_OPTIONS
      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.


  • Option: TASK_SIZE
    • Kernel Versions: 2.6.15.6 ...

"Size of user task space" if TASK_SIZE_BOOL

    • default "0x80000000"


  • Option: CONSISTENT_START_BOOL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Set custom consistent memory pool address
    • depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
      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.


  • Option: CONSISTENT_START
    • Kernel Versions: 2.6.15.6 ...

"Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL

    • default "0xff100000" if NOT_COHERENT_CACHE


  • Option: CONSISTENT_SIZE_BOOL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Set custom consistent memory pool size
    • depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
      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.


  • Option: CONSISTENT_SIZE
    • Kernel Versions: 2.6.15.6 ...

"Size of consistent memory pool" if CONSISTENT_SIZE_BOOL

    • default "0x00200000" if NOT_COHERENT_CACHE


  • Option: BOOT_LOAD_BOOL
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Set the boot link/load address
    • depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
      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.


  • Option: BOOT_LOAD
    • Kernel Versions: 2.6.15.6 ...

"Link/load address for booting" if BOOT_LOAD_BOOL

    • default "0x00400000" if 40x || 8xx || 8260
    • default "0x01000000" if 44x
    • default "0x00800000"


  • Option: PIN_TLB
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Pinned Kernel TLBs (860 ONLY)
    • depends on ADVANCED_OPTIONS && 8xx








IBM 40x optionsEdit

    • depends on 40x


  • Option: SERIAL_SICC
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) SICC Serial port
    • depends on STB03xxx


  • Option: UART1_DFLT_CONSOLE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on SERIAL_SICC && UART0_TTYS1
    • default y


  • Option: SERIAL_SICC_CONSOLE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)
    • depends on SERIAL_SICC && UART0_TTYS1
    • default y








Linux Kernel Configuration

Around Wikia's network

Random Wiki