| config PPC64 |
| bool "64-bit kernel" |
| default n |
| help |
| This option selects whether a 32-bit or a 64-bit kernel |
| will be built. |
| |
| menu "Processor support" |
| choice |
| prompt "Processor Type" |
| depends on PPC32 |
| default 6xx |
| help |
| There are five families of 32 bit PowerPC chips supported. |
| The most common ones are the desktop and server CPUs (601, 603, |
| 604, 740, 750, 74xx) CPUs from Freescale and IBM, with their |
| embedded 512x/52xx/82xx/83xx/86xx counterparts. |
| The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500 |
| (85xx) each form a family of their own that is not compatible |
| with the others. |
| |
| If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. |
| |
| config 6xx |
| bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" |
| select PPC_FPU |
| |
| config PPC_85xx |
| bool "Freescale 85xx" |
| select E500 |
| select FSL_SOC |
| select WANT_DEVICE_TREE |
| select MPC85xx |
| |
| config PPC_8xx |
| bool "Freescale 8xx" |
| select FSL_SOC |
| select 8xx |
| select WANT_DEVICE_TREE |
| select PPC_LIB_RHEAP |
| |
| config 40x |
| bool "AMCC 40x" |
| select PPC_DCR_NATIVE |
| select WANT_DEVICE_TREE |
| select PPC_UDBG_16550 |
| |
| config 44x |
| bool "AMCC 44x" |
| select PPC_DCR_NATIVE |
| select WANT_DEVICE_TREE |
| select PPC_UDBG_16550 |
| |
| config E200 |
| bool "Freescale e200" |
| |
| endchoice |
| |
| config POWER4_ONLY |
| bool "Optimize for POWER4" |
| depends on PPC64 |
| default n |
| ---help--- |
| Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. |
| The resulting binary will not work on POWER3 or RS64 processors |
| when compiled with binutils 2.15 or later. |
| |
| config POWER3 |
| bool |
| depends on PPC64 |
| default y if !POWER4_ONLY |
| |
| config POWER4 |
| depends on PPC64 |
| def_bool y |
| |
| config TUNE_CELL |
| bool "Optimize for Cell Broadband Engine" |
| depends on PPC64 |
| help |
| Cause the compiler to optimize for the PPE of the Cell Broadband |
| Engine. This will make the code run considerably faster on Cell |
| but somewhat slower on other machines. This option only changes |
| the scheduling of instructions, not the selection of instructions |
| itself, so the resulting kernel will keep running on all other |
| machines. When building a kernel that is supposed to run only |
| on Cell, you should also select the POWER4_ONLY option. |
| |
| config 6xx |
| bool |
| |
| # this is temp to handle compat with arch=ppc |
| config 8xx |
| bool |
| |
| config E500 |
| select FSL_EMB_PERFMON |
| bool |
| |
| config PPC_FPU |
| bool |
| default y if PPC64 |
| |
| config 4xx |
| bool |
| depends on 40x || 44x |
| default y |
| |
| config BOOKE |
| bool |
| depends on E200 || E500 || 44x |
| default y |
| |
| config FSL_BOOKE |
| bool |
| depends on E200 || E500 |
| default y |
| |
| config FSL_EMB_PERFMON |
| bool |
| |
| 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 |
| select RESOURCES_64BIT |
| 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 CLASSIC32 || POWER4 |
| ---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 |
| default y |
| ---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 PPC_STD_MMU |
| bool |
| depends on 6xx || POWER3 || POWER4 || PPC64 |
| default y |
| |
| config PPC_STD_MMU_32 |
| def_bool y |
| depends on PPC_STD_MMU && PPC32 |
| |
| config PPC_MM_SLICES |
| bool |
| default y if HUGETLB_PAGE |
| default n |
| |
| config VIRT_CPU_ACCOUNTING |
| bool "Deterministic task and CPU time accounting" |
| depends on PPC64 |
| default y |
| help |
| Select this option to enable more accurate task and CPU time |
| accounting. This is done by reading a CPU counter on each |
| kernel entry and exit and on transitions within the kernel |
| between system, softirq and hardirq state, so there is a |
| small performance impact. This also enables accounting of |
| stolen time on logically-partitioned systems running on |
| IBM POWER5-based machines. |
| |
| If in doubt, say Y here. |
| |
| 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 NR_CPUS |
| int "Maximum number of CPUs (2-128)" |
| range 2 128 |
| depends on SMP |
| default "32" if PPC64 |
| default "4" |
| |
| config NOT_COHERENT_CACHE |
| bool |
| depends on 4xx || 8xx || E200 || PPC_MPC512x |
| default y |
| |
| config CHECK_CACHE_COHERENCY |
| bool |
| |
| endmenu |