1 # For a description of the syntax of this configuration file,
2 # see Documentation/kbuild/kconfig-language.txt.
5 mainmenu "Linux/PowerPC Kernel Configuration"
15 config GENERIC_HARDIRQS
19 config RWSEM_GENERIC_SPINLOCK
22 config RWSEM_XCHGADD_ALGORITHM
26 config ARCH_HAS_ILOG2_U32
30 config ARCH_HAS_ILOG2_U64
34 config GENERIC_HWEIGHT
38 config GENERIC_CALIBRATE_DELAY
53 # All PPCs use generic nvram driver through ppc_md
58 config GENERIC_FIND_NEXT_BIT
62 config SCHED_NO_NO_OMIT_FRAME_POINTER
66 config ARCH_MAY_HAVE_PC_FDC
80 prompt "Processor Type"
84 bool "6xx/7xx/74xx/52xx/82xx"
87 There are four types of PowerPC chips supported. The more common
88 types (601, 603, 604, 740, 750, 7400), the older Freescale
89 (formerly Motorola) embedded versions (821, 823, 850, 855, 860,
90 52xx, 82xx), the IBM embedded versions (403 and 405) and
91 the Book E embedded processors from IBM (44x) and Freescale (85xx).
92 For support for 64-bit processors, set ARCH=powerpc.
93 Unless you are building a kernel for one of the embedded processor
95 Also note that because the 52xx, 82xx family have a 603e
96 core, specific support for that chipset is asked later on.
100 select PPC_DCR_NATIVE
104 select PPC_DCR_NATIVE
115 config PPC_DCR_NATIVE
121 depends on PPC_DCR_NATIVE
134 This option enables kernel support for larger than 32-bit physical
135 addresses. This features is not be available on all e500 cores.
137 If in doubt, say N here.
140 bool "AltiVec Support"
144 This option enables kernel support for the Altivec extensions to the
145 PowerPC processor. The kernel currently supports saving and restoring
146 altivec registers, and turning on the 'altivec enable' bit so user
147 processes can execute altivec instructions.
149 This option is only usefully if you have a processor that supports
150 altivec (G4, otherwise known as 74xx series), but does not have
151 any affect on a non-altivec cpu (it does, however add code to the
154 If in doubt, say Y here.
157 bool "Thermal Management Support"
158 depends on 6xx && !8260
160 G3 and G4 processors have an on-chip temperature sensor called the
161 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
162 temperature within 2-4 degrees Celsius. This option shows the current
163 on-die temperature in /proc/cpuinfo if the cpu supports it.
165 Unfortunately, on some chip revisions, this sensor is very inaccurate
166 and in some cases, does not work at all, so don't assume the cpu
167 temp is actually what /proc/cpuinfo says it is.
170 bool "Interrupt driven TAU driver (DANGEROUS)"
173 The TAU supports an interrupt driven mode which causes an interrupt
174 whenever the temperature goes out of range. This is the fastest way
175 to get notified the temp has exceeded a range. With this option off,
176 a timer is used to re-check the temperature periodically.
178 However, on some cpus it appears that the TAU interrupt hardware
179 is buggy and can cause a situation which would lead unexplained hard
182 Unless you are extending the TAU driver, or enjoy kernel/hardware
183 debugging, leave this option off.
186 bool "Average high and low temp"
189 The TAU hardware can compare the temperature to an upper and lower
190 bound. The default behavior is to show both the upper and lower
191 bound in /proc/cpuinfo. If the range is large, the temperature is
192 either changing a lot, or the TAU hardware is broken (likely on some
193 G4's). If the range is small (around 4 degrees), the temperature is
194 relatively stable. If you say Y here, a single temperature value,
195 halfway between the upper and lower bounds, will be reported in
198 If in doubt, say N here.
200 config MATH_EMULATION
201 bool "Math emulation"
202 depends on 4xx || 8xx
204 Some PowerPC chips designed for embedded applications do not have
205 a floating-point unit and therefore do not implement the
206 floating-point instructions in the PowerPC instruction set. If you
207 say Y here, the kernel will include code to emulate a floating-point
208 unit, which will allow programs that use floating-point
211 If you have an Apple machine or an IBM RS/6000 or pSeries machine,
212 or any machine with a 6xx, 7xx or 7xxx series processor, say N
213 here. Saying Y here will not hurt performance (on any machine) but
214 will increase the size of the kernel.
217 bool "kexec system call (EXPERIMENTAL)"
218 depends on EXPERIMENTAL
220 kexec is a system call that implements the ability to shutdown your
221 current kernel, and to start another kernel. It is like a reboot
222 but it is independent of the system firmware. And like a reboot
223 you can start any kernel with it, not just Linux.
225 The name comes from the similarity to the exec system call.
227 It is an ongoing process to be certain the hardware in a machine
228 is properly shutdown, so do not be surprised if this code does not
229 initially work for you. It may help to enable device hotplugging
230 support. As of this writing the exact hardware interface is
231 strongly in flux, so no good recommendation can be made.
233 In the GameCube implementation, kexec allows you to load and
234 run DOL files, including kernel and homebrew DOLs.
236 source "drivers/cpufreq/Kconfig"
238 config PPC601_SYNC_FIX
239 bool "Workarounds for PPC601 bugs"
240 depends on 6xx && PPC_PREP
242 Some versions of the PPC601 (the first PowerPC chip) have bugs which
243 mean that extra synchronization instructions are required near
244 certain instructions, typically those that make major changes to the
245 CPU state. These extra instructions reduce performance slightly.
246 If you say N here, these extra instructions will not be included,
247 resulting in a kernel which will run faster but may not run at all
248 on some systems with the PPC601 chip.
250 If in doubt, say Y here.
252 source arch/ppc/platforms/4xx/Kconfig
259 config NOT_COHERENT_CACHE
261 depends on 4xx || 8xx
266 menu "Platform options"
272 prompt "8xx Machine Type"
279 Single-board computers based around the PowerPC MPC8xx chips and
280 intended for embedded applications. The following types are
284 Embedded Planet RPX Lite. PC104 form-factor SBC based on the MPC823.
287 Embedded Planet RPX Classic Low-fat. Credit-card-size SBC based on
291 Bright Star Engineering ip-Engine.
297 MPC8xx based family of mini modules, half credit card size,
298 up to 64 MB of RAM, 8 MB Flash, (Fast) Ethernet, 2 x serial ports,
299 2 x CAN bus interface, ...
300 Manufacturer: TQ Components, www.tq-group.de
301 Date of Release: October (?) 1999
302 End of Life: not yet :-)
304 - module: <http://www.denx.de/PDF/TQM8xxLHWM201.pdf>
305 - starter kit: <http://www.denx.de/PDF/STK8xxLHWM201.pdf>
306 - images: <http://www.denx.de/embedded-ppc-en.html>
309 FingerPrint Sensor System (based on TQM850L)
310 Manufacturer: IKENDI AG, <http://www.ikendi.com/>
311 Date of Release: November 1999
312 End of life: end 2000 ?
316 MPC860 based board used in the "Integrated Voice Mail System",
317 Small Version (8 voice channels)
318 Manufacturer: Speech Design, <http://www.speech-design.de/>
319 Date of Release: December 2000 (?)
321 URL: <http://www.speech-design.de/>
324 MPC860 based board used in the "Integrated Voice Mail System",
325 Large Version (24 voice channels)
326 Manufacturer: Speech Design, <http://www.speech-design.de/>
327 Date of Release: March 2001 (?)
329 URL: <http://www.speech-design.de/>
332 Hermes-Pro ISDN/LAN router with integrated 8 x hub
333 Manufacturer: Multidata Gesellschaft fur Datentechnik und Informatik
334 <http://www.multidata.de/>
335 Date of Release: 2000 (?)
337 URL: <http://www.multidata.de/english/products/hpro.htm>
340 VMEBus IP (Industry Pack) carrier board with MPC860
341 Manufacturer: MicroSys GmbH, <http://www.microsys.de/>
344 URL: <http://www.microsys.de/html/ip860.html>
347 PCU = Peripheral Controller Unit, Extended
348 Manufacturer: Siemens AG, ICN (Information and Communication Networks)
349 <http://www.siemens.de/page/1,3771,224315-1-999_2_226207-0,00.html>
350 Date of Release: April 2001
351 End of life: August 2001
357 The RPX-Classic is a single-board computer based on the Motorola
358 MPC860. It features 16MB of DRAM and a variable amount of flash,
359 I2C EEPROM, thermal monitoring, a PCMCIA slot, a DIP switch and two
360 LEDs. Variants with Ethernet ports exist. Say Y here to support it
366 Say Y here to support the Bright Star Engineering ipEngine SBC.
367 This is a credit-card-sized device featuring a MPC823 processor,
368 26MB DRAM, 4MB flash, Ethernet, a 16K-gate FPGA, USB, an LCD/video
369 controller, and two RS232 ports.
378 Say Y here to support the TQM823L, one of an MPC8xx-based family of
379 mini SBCs (half credit-card size) from TQ Components first released
380 in late 1999. Technical references are at
381 <http://www.denx.de/PDF/TQM8xxLHWM201.pdf>, and
382 <http://www.denx.de/PDF/STK8xxLHWM201.pdf>, and an image at
383 <http://www.denx.de/embedded-ppc-en.html>.
388 Say Y here to support the TQM850L, one of an MPC8xx-based family of
389 mini SBCs (half credit-card size) from TQ Components first released
390 in late 1999. Technical references are at
391 <http://www.denx.de/PDF/TQM8xxLHWM201.pdf>, and
392 <http://www.denx.de/PDF/STK8xxLHWM201.pdf>, and an image at
393 <http://www.denx.de/embedded-ppc-en.html>.
398 Say Y here to support the TQM855L, one of an MPC8xx-based family of
399 mini SBCs (half credit-card size) from TQ Components first released
400 in late 1999. Technical references are at
401 <http://www.denx.de/PDF/TQM8xxLHWM201.pdf>, and
402 <http://www.denx.de/PDF/STK8xxLHWM201.pdf>, and an image at
403 <http://www.denx.de/embedded-ppc-en.html>.
408 Say Y here to support the TQM860L, one of an MPC8xx-based family of
409 mini SBCs (half credit-card size) from TQ Components first released
410 in late 1999. Technical references are at
411 <http://www.denx.de/PDF/TQM8xxLHWM201.pdf>, and
412 <http://www.denx.de/PDF/STK8xxLHWM201.pdf>, and an image at
413 <http://www.denx.de/embedded-ppc-en.html>.
421 Say Y here to support the Integrated Voice-Mail Small 8-channel SBC
422 from Speech Design, released March 2001. The manufacturer's website
423 is at <http://www.speech-design.de/>.
428 Say Y here to support the Integrated Voice-Mail Large 24-channel SBC
429 from Speech Design, released March 2001. The manufacturer's website
430 is at <http://www.speech-design.de/>.
453 MBX is a line of Motorola single-board computer based around the
454 MPC821 and MPC860 processors, and intended for embedded-controller
455 applications. Say Y here to support these boards directly.
460 The Wincept 100/110 is a Motorola single-board computer based on the
461 MPC821 PowerPC, introduced in 1998 and designed to be used in
462 thin-client machines. Say Y to support it directly.
467 prompt "Machine Type"
471 Linux currently supports several different kinds of PowerPC-based
472 machines: Apple Power Macintoshes and clones (such as the Motorola
473 Starmax series), PReP (PowerPC Reference Platform) machines (such
474 as the Motorola PowerStacks, Motorola cPCI/VME embedded systems,
475 and some IBM RS/6000 systems), CHRP (Common Hardware Reference
476 Platform) machines (including all of the recent IBM RS/6000 and
477 pSeries machines), and several embedded PowerPC systems containing
478 4xx, 6xx, 7xx, 8xx, 74xx, and 82xx processors. Currently, the
479 default option is to build a kernel which works on PReP.
481 Note that support for Apple and CHRP machines is now only available
482 with ARCH=powerpc, and has been removed from this menu. If you
483 wish to build a kernel for an Apple or CHRP machine, exit this
484 configuration process and re-run it with ARCH=powerpc.
486 Select PReP if configuring for a PReP machine.
492 bool "Artesyn-Katana"
494 Select KATANA if configuring an Artesyn KATANA 750i or 3750
503 Select CPCI690 if configuring a Force CPCI690 cPCI board.
506 bool "Force-PowerPMC250"
509 bool "IBM 750FX Eval board or 750GX Eval board"
511 Select CHESTNUT if configuring an IBM 750FX Eval Board or a
512 IBM 750GX Eval board.
516 select PPC_INDIRECT_PCI
521 Select HDPU if configuring a Sky Computers Compute Blade.
525 tristate "HDPU-Features"
527 Select to enable HDPU enhanced features.
530 bool "Marvell-EV64260BP"
532 Select EV64260 if configuring a Marvell (formerly Galileo)
533 EV64260BP Evaluation platform.
536 bool "Motorola-LoPEC"
540 bool "Motorola-MVME5100"
541 select PPC_INDIRECT_PCI
544 bool "Motorola-PowerPlus"
546 select PPC_INDIRECT_PCI
549 bool "Motorola-PrPMC750"
550 select PPC_INDIRECT_PCI
553 bool "Motorola-PrPMC800"
554 select PPC_INDIRECT_PCI
557 bool "Motorola-Sandpoint"
560 Select SANDPOINT if configuring for a Motorola Sandpoint X3
563 config RADSTONE_PPC7D
564 bool "Radstone Technology PPC7D board"
573 The EST8260 is a single-board computer manufactured by Wind River
574 Systems, Inc. (formerly Embedded Support Tools Corp.) and based on
575 the MPC8260. Wind River Systems has a website at
576 <http://www.windriver.com/>, but the EST8260 cannot be found on it
577 and has probably been discontinued or rebadged.
582 SBC PowerQUICC II, single-board computer with MPC82xx CPU
583 Manufacturer: Wind River Systems, Inc.
584 Date of Release: May 2003
586 URL: <http://www.windriver.com/>
597 MPC8260 based module, little larger than credit card,
598 up to 128 MB global + 64 MB local RAM, 32 MB Flash,
599 32 kB EEPROM, 256 kB L@ Cache, 10baseT + 100baseT Ethernet,
600 2 x serial ports, ...
601 Manufacturer: TQ Components, www.tq-group.de
602 Date of Release: June 2001
603 End of Life: not yet :-)
604 URL: <http://www.denx.de/PDF/TQM82xx_SPEC_Rev005.pdf>
607 bool "Freescale-PQ2FADS"
609 Select PQ2FADS if you wish to configure for a Freescale
610 PQ2FADS board (-VR or -ZU).
613 bool "Freescale LITE5200 / (IceCube)"
616 Support for the LITE5200 dev board for the MPC5200 from Freescale.
617 This is for the LITE5200 version 2.0 board. Don't know if it changes
618 much but it's only been tested on this board version. I think this
619 board is also known as IceCube.
622 bool "Freescale LITE5200B"
625 Support for the LITE5200B dev board for the MPC5200 from Freescale.
626 This is the new board with 2 PCI slots.
629 bool "Marvell-EV64360BP"
631 Select EV64360 if configuring a Marvell EV64360BP Evaluation
637 depends on 8xx && (TQM823L || TQM850L || FPS850L || TQM855L || TQM860L)
642 depends on 8xx || 8260
649 bool "CPM2 Support" if WILLOW
651 default y if TQM8260 || RPX8260 || EST8260 || SBS8260 || SBC82xx || PQ2FADS
653 The MPC8260 is a typical embedded CPU made by Motorola. Selecting
654 this option means that you wish to build a kernel for a machine with
662 The CPM1 (Communications Processor Module) is a coprocessor on
663 embedded CPUs made by Motorola. Selecting this option means that
664 you wish to build a kernel for a machine with a CPM1 coprocessor
665 on it (8xx, 827x, 8560).
669 depends on 8260 || MPC8560 || MPC8555
673 The CPM2 (Communications Processor Module) is a coprocessor on
674 embedded CPUs made by Motorola. Selecting this option means that
675 you wish to build a kernel for a machine with a CPM2 coprocessor
676 on it (826x, 827x, 8560).
680 depends on SANDPOINT || SPRUCE || PPLUS || \
681 PRPMC750 || PRPMC800 || LOPEC || \
682 (EV64260 && !SERIAL_MPSC) || CHESTNUT || RADSTONE_PPC7D
687 depends on 6xx && POWERPMC250
692 depends on EV64260 || CPCI690
695 config MV64360 # Really MV64360 & MV64460
697 depends on CHESTNUT || KATANA || RADSTONE_PPC7D || HDPU || EV64360
702 depends on (GT64260 || MV64360)
703 select PPC_INDIRECT_PCI
708 depends on MV643XX_ETH && (KATANA || RADSTONE_PPC7D || EV64360 || HDPU)
713 depends on MV643XX_ETH && (KATANA || RADSTONE_PPC7D || EV64360)
718 depends on MV643XX_ETH && (KATANA || RADSTONE_PPC7D || EV64360)
721 menu "Set bridge options"
724 config NOT_COHERENT_CACHE
725 bool "Turn off Cache Coherency"
728 Some 64x60 bridges lock up when trying to enforce cache coherency.
729 When this option is selected, cache coherency will be turned off.
730 Note that this can cause other problems (e.g., stale data being
731 speculatively loaded via a cached mapping). Use at your own risk.
734 hex "Set bridge base used by firmware"
737 A firmware can leave the base address of the bridge's registers at
738 a non-standard location. If so, set this value to reflect the
739 address of that non-standard location.
741 config MV64X60_NEW_BASE
742 hex "Set bridge base used by kernel"
745 If the current base address of the bridge's registers is not where
746 you want it, set this value to the address that you want it moved to.
750 config NONMONARCH_SUPPORT
751 bool "Enable Non-Monarch Support"
759 config EPIC_SERIAL_MODE
761 depends on 6xx && (LOPEC || SANDPOINT)
766 depends on POWERPMC250 || LOPEC || SANDPOINT
767 select PPC_INDIRECT_PCI
770 config MPC10X_OPENPIC
772 depends on POWERPMC250 || LOPEC || SANDPOINT
775 config MPC10X_STORE_GATHERING
776 bool "Enable MPC10x store gathering"
777 depends on MPC10X_BRIDGE
779 config SANDPOINT_ENABLE_UART1
780 bool "Enable DUART mode on Sandpoint"
783 If this option is enabled then the MPC824x processor will run
784 in DUART mode instead of UART mode.
786 config HARRIER_STORE_GATHERING
787 bool "Enable Harrier store gathering"
790 config MVME5100_IPMC761_PRESENT
791 bool "MVME5100 configured with an IPMC761"
795 config SPRUCE_BAUD_33M
796 bool "Spruce baud clock support"
800 bool "PC PS/2 style Keyboard"
801 depends on 4xx || CPM2
804 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
805 default y if PPC_PREP
808 depends on PPC_STD_MMU
809 bool "Symmetric multi-processing support"
811 This enables support for systems with more than one CPU. If you have
812 a system with only one CPU, say N. If you have a system with more
813 than one CPU, say Y. Note that the kernel does not currently
814 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
815 since they have inadequate hardware support for multiprocessor
818 If you say N here, the kernel will run on single and multiprocessor
819 machines, but will use only one CPU of a multiprocessor machine. If
820 you say Y here, the kernel will run on single-processor machines.
821 On a single-processor machine, the kernel will run faster if you say
824 If you don't know what to do here, say N.
827 bool "Distribute interrupts on all CPUs by default"
828 depends on SMP && !MV64360
830 This option gives the kernel permission to distribute IRQs across
831 multiple CPUs. Saying N here will route all IRQs to the first
832 CPU. Generally saying Y is safe, although some problems have been
833 reported with SMP Power Macintoshes with this option enabled.
836 int "Maximum number of CPUs (2-32)"
842 bool "High memory support"
844 config ARCH_POPULATES_NODE_MAP
847 source kernel/Kconfig.hz
848 source kernel/Kconfig.preempt
851 source "fs/Kconfig.binfmt"
854 bool "Support for PReP Residual Data"
857 Some PReP systems have residual data passed to the kernel by the
858 firmware. This allows detection of memory size, devices present and
859 other useful pieces of information. Sometimes this information is
860 not present or incorrect, in which case it could lead to the machine
861 behaving incorrectly. If this happens, either disable PREP_RESIDUAL
862 or pass the 'noresidual' option to the kernel.
864 If you are running a PReP system, say Y here, otherwise say N.
866 config PROC_PREPRESIDUAL
867 bool "Support for reading of PReP Residual Data in /proc"
868 depends on PREP_RESIDUAL && PROC_FS
870 Enabling this option will create a /proc/residual file which allows
871 you to get at the residual data on PReP systems. You will need a tool
872 (lsresidual) to parse it. If you aren't on a PReP system, you don't
876 bool "Default bootloader kernel arguments"
879 string "Initial kernel command string"
880 depends on CMDLINE_BOOL
881 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
883 On some platforms, there is currently no way for the boot loader to
884 pass arguments to the kernel. For these platforms, you can supply
885 some command-line options at build time by entering them here. In
886 most cases you will need to specify the root device here.
889 source kernel/power/Kconfig
893 bool "Enable seccomp to safely compute untrusted bytecode"
897 This kernel feature is useful for number crunching applications
898 that may need to compute untrusted bytecode during their
899 execution. By using pipes or other transports made available to
900 the process as file descriptors supporting the read/write
901 syscalls, it's possible to isolate those applications in
902 their own address space using seccomp. Once seccomp is
903 enabled via /proc/<pid>/seccomp, it cannot be disabled
904 and the task is only allowed to execute a few safe syscalls
905 defined by each seccomp mode.
907 If unsure, say Y. Only embedded should say N here.
918 bool "Support for ISA-bus hardware"
921 Find out whether you have ISA slots on your motherboard. ISA is the
922 name of a bus system, i.e. the way the CPU talks to the other stuff
923 inside your box. If you have an Apple machine, say N here; if you
924 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
925 you have an embedded board, consult your board documentation.
931 config GENERIC_ISA_DMA
933 depends on 6xx && !CPM2
938 default y if PPC_PREP
941 config PPC_INDIRECT_PCI
944 default y if 40x || 44x || PPC_PREP
950 The Extended Industry Standard Architecture (EISA) bus is a bus
951 architecture used on some older intel-based PCs.
956 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
961 bool "PCI support" if 40x || CPM2 || PPC_MPC52xx
962 default y if !40x && !CPM2 && !8xx
963 default PCI_QSPAN if !4xx && !CPM2 && 8xx
965 Find out whether your system includes a PCI bus. PCI is the name of
966 a bus system, i.e. the way the CPU talks to the other stuff inside
967 your box. If you say Y here, the kernel will include drivers and
968 infrastructure code to support PCI bus devices.
978 depends on !4xx && !CPM2 && 8xx
981 Say Y here if you have a system based on a Motorola 8xx-series
982 embedded processor with a QSPAN PCI interface, otherwise say N.
986 depends on PCI && 8260
987 select PPC_INDIRECT_PCI
991 bool "Enable workaround for MPC826x erratum PCI 9"
996 prompt "IDMA channel for PCI 9 workaround"
999 config 8260_PCI9_IDMA1
1002 config 8260_PCI9_IDMA2
1005 config 8260_PCI9_IDMA3
1008 config 8260_PCI9_IDMA4
1013 source "drivers/pci/Kconfig"
1015 source "drivers/pcmcia/Kconfig"
1018 bool "RapidIO support" if MPC8540 || MPC8560
1020 If you say Y here, the kernel will include drivers and
1021 infrastructure code to support RapidIO interconnect devices.
1023 source "drivers/rapidio/Kconfig"
1027 menu "Advanced setup"
1029 config ADVANCED_OPTIONS
1030 bool "Prompt for advanced kernel configuration options"
1032 This option will enable prompting for a variety of advanced kernel
1033 configuration options. These options can cause the kernel to not
1034 work if they are set incorrectly, but can be used to optimize certain
1035 aspects of kernel memory management.
1037 Unless you know what you are doing, say N here.
1039 comment "Default settings for advanced configuration options are used"
1040 depends on !ADVANCED_OPTIONS
1042 config HIGHMEM_START_BOOL
1043 bool "Set high memory pool address"
1044 depends on ADVANCED_OPTIONS && HIGHMEM
1046 This option allows you to set the base address of the kernel virtual
1047 area used to map high memory pages. This can be useful in
1048 optimizing the layout of kernel virtual memory.
1050 Say N here unless you know what you are doing.
1052 config HIGHMEM_START
1053 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
1054 default "0xfe000000"
1056 config LOWMEM_SIZE_BOOL
1057 bool "Set maximum low memory"
1058 depends on ADVANCED_OPTIONS
1060 This option allows you to set the maximum amount of memory which
1061 will be used as "low memory", that is, memory which the kernel can
1062 access directly, without having to set up a kernel virtual mapping.
1063 This can be useful in optimizing the layout of kernel virtual
1066 Say N here unless you know what you are doing.
1069 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
1070 default "0x30000000"
1072 config KERNEL_START_BOOL
1073 bool "Set custom kernel base address"
1074 depends on ADVANCED_OPTIONS
1076 This option allows you to set the kernel virtual address at which
1077 the kernel will map low memory (the kernel image will be linked at
1078 this address). This can be useful in optimizing the virtual memory
1079 layout of the system.
1081 Say N here unless you know what you are doing.
1084 hex "Virtual address of kernel base" if KERNEL_START_BOOL
1085 default "0xc0000000"
1087 config TASK_SIZE_BOOL
1088 bool "Set custom user task size"
1089 depends on ADVANCED_OPTIONS
1091 This option allows you to set the amount of virtual address space
1092 allocated to user tasks. This can be useful in optimizing the
1093 virtual memory layout of the system.
1095 Say N here unless you know what you are doing.
1098 hex "Size of user task space" if TASK_SIZE_BOOL
1099 default "0x80000000"
1101 config CONSISTENT_START_BOOL
1102 bool "Set custom consistent memory pool address"
1103 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1105 This option allows you to set the base virtual address
1106 of the consistent memory pool. This pool of virtual
1107 memory is used to make consistent memory allocations.
1109 config CONSISTENT_START
1110 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
1111 default "0xff100000" if NOT_COHERENT_CACHE
1113 config CONSISTENT_SIZE_BOOL
1114 bool "Set custom consistent memory pool size"
1115 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1117 This option allows you to set the size of the
1118 consistent memory pool. This pool of virtual memory
1119 is used to make consistent memory allocations.
1121 config CONSISTENT_SIZE
1122 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1123 default "0x00200000" if NOT_COHERENT_CACHE
1125 config BOOT_LOAD_BOOL
1126 bool "Set the boot link/load address"
1127 depends on ADVANCED_OPTIONS && !PPC_PREP
1129 This option allows you to set the initial load address of the zImage
1130 or zImage.initrd file. This can be useful if you are on a board
1131 which has a small amount of memory.
1133 Say N here unless you know what you are doing.
1136 hex "Link/load address for booting" if BOOT_LOAD_BOOL
1137 default "0x00400000" if 40x || 8xx || 8260
1138 default "0x01000000" if 44x
1139 default "0x00800000"
1142 bool "Pinned Kernel TLBs (860 ONLY)"
1143 depends on ADVANCED_OPTIONS && 8xx
1145 config PPC_LIB_RHEAP
1150 source "net/Kconfig"
1152 source "drivers/Kconfig"
1156 source "arch/ppc/8xx_io/Kconfig"
1158 source "arch/ppc/8260_io/Kconfig"
1161 menu "IBM 40x options"
1165 bool "SICC Serial port"
1168 config UART1_DFLT_CONSOLE
1170 depends on SERIAL_SICC && UART0_TTYS1
1173 config SERIAL_SICC_CONSOLE
1175 depends on SERIAL_SICC && UART0_TTYS1
1180 source "lib/Kconfig"
1182 source "arch/ppc/Kconfig.debug"
1184 source "security/Kconfig"
1186 source "crypto/Kconfig"