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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
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 PPC_BOOK3S_32
bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
select PPC_FPU
config PPC_85xx
bool "Freescale 85xx"
select E500
config PPC_8xx
bool "Freescale 8xx"
select FSL_SOC
select 8xx
select PPC_LIB_RHEAP
config 40x
bool "AMCC 40x"
select PPC_DCR_NATIVE
select PPC_UDBG_16550
select 4xx_SOC
select PPC_PCI_CHOICE
config 44x
bool "AMCC 44x, 46x or 47x"
select PPC_DCR_NATIVE
select PPC_UDBG_16550
select 4xx_SOC
select PPC_PCI_CHOICE
select PHYS_64BIT
config E200
bool "Freescale e200"
endchoice
choice
prompt "Processor Type"
depends on PPC64
help
There are two families of 64 bit PowerPC chips supported.
The most common ones are the desktop and server CPUs
(POWER3, RS64, POWER4, POWER5, POWER5+, POWER6, ...)
The other are the "embedded" processors compliant with the
"Book 3E" variant of the architecture
config PPC_BOOK3S_64
bool "Server processors"
select PPC_FPU
select PPC_HAVE_PMU_SUPPORT
select SYS_SUPPORTS_HUGETLBFS
config PPC_BOOK3E_64
bool "Embedded processors"
select PPC_FPU # Make it a choice ?
select PPC_SMP_MUXED_IPI
endchoice
config PPC_BOOK3S
def_bool y
depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
config PPC_BOOK3E
def_bool y
depends on PPC_BOOK3E_64
config POWER4_ONLY
bool "Optimize for POWER4"
depends on PPC64 && PPC_BOOK3S
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 6xx
def_bool y
depends on PPC32 && PPC_BOOK3S
select PPC_HAVE_PMU_SUPPORT
config POWER3
bool
depends on PPC64 && PPC_BOOK3S
default y if !POWER4_ONLY
config POWER4
depends on PPC64 && PPC_BOOK3S
def_bool y
config PPC_A2
bool
depends on PPC_BOOK3E_64
config TUNE_CELL
bool "Optimize for Cell Broadband Engine"
depends on PPC64 && PPC_BOOK3S
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.
# this is temp to handle compat with arch=ppc
config 8xx
bool
config E500
select FSL_EMB_PERFMON
select PPC_FSL_BOOK3E
bool
config PPC_E500MC
bool "e500mc Support"
select PPC_FPU
depends on E500
config PPC_FPU
bool
default y if PPC64
config FSL_EMB_PERFMON
bool "Freescale Embedded Perfmon"
depends on E500 || PPC_83xx
help
This is the Performance Monitor support found on the e500 core
and some e300 cores (c3 and c4). Select this only if your
core supports the Embedded Performance Monitor APU
config FSL_EMB_PERF_EVENT
bool
depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
default y
config FSL_EMB_PERF_EVENT_E500
bool
depends on FSL_EMB_PERF_EVENT && E500
default y
config 4xx
bool
depends on 40x || 44x
default y
config BOOKE
bool
depends on E200 || E500 || 44x || PPC_BOOK3E
default y
config FSL_BOOKE
bool
depends on (E200 || E500) && PPC32
select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT
default y
# this is for common code between PPC32 & PPC64 FSL BOOKE
config PPC_FSL_BOOK3E
bool
select FSL_EMB_PERFMON
select PPC_SMP_MUXED_IPI
default y if FSL_BOOKE
config PTE_64BIT
bool
depends on 44x || E500 || PPC_86xx
default y if PHYS_64BIT
config PHYS_64BIT
bool 'Large physical address support' if E500 || PPC_86xx
depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
---help---
This option enables kernel support for larger than 32-bit physical
addresses. This feature may not be available on all cores.
If you have more than 3.5GB of RAM or so, you also need to enable
SWIOTLB under Kernel Options for this to work. The actual number
is platform-dependent.
If in doubt, say N here.
config ALTIVEC
bool "AltiVec Support"
depends on 6xx || 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 VSX
bool "VSX Support"
depends on POWER4 && ALTIVEC && PPC_FPU
---help---
This option enables kernel support for the Vector Scaler extensions
to the PowerPC processor. The kernel currently supports saving and
restoring VSX registers, and turning on the 'VSX enable' bit so user
processes can execute VSX instructions.
This option is only useful if you have a processor that supports
VSX (P7 and above), but does not have any affect on a non-VSX
CPUs (it does, however add code to the kernel).
If in doubt, say Y here.
config PPC_ICSWX
bool "Support for PowerPC icswx coprocessor instruction"
depends on POWER4
default n
---help---
This option enables kernel support for the PowerPC Initiate
Coprocessor Store Word (icswx) coprocessor instruction on POWER7
or newer processors.
This option is only useful if you have a processor that supports
the icswx coprocessor instruction. It does not have any effect
on processors without the icswx coprocessor instruction.
This option slightly increases kernel memory usage.
If in doubt, say N here.
config SPE
bool "SPE Support"
depends on E200 || (E500 && !PPC_E500MC)
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
def_bool y
depends on PPC_BOOK3S
config PPC_STD_MMU_32
def_bool y
depends on PPC_STD_MMU && PPC32
config PPC_STD_MMU_64
def_bool y
depends on PPC_STD_MMU && PPC64
config PPC_MMU_NOHASH
def_bool y
depends on !PPC_STD_MMU
config PPC_MMU_NOHASH_32
def_bool y
depends on PPC_MMU_NOHASH && PPC32
config PPC_MMU_NOHASH_64
def_bool y
depends on PPC_MMU_NOHASH && PPC64
config PPC_BOOK3E_MMU
def_bool y
depends on FSL_BOOKE || PPC_BOOK3E
config PPC_MM_SLICES
bool
default y if (PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
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 PPC_HAVE_PMU_SUPPORT
bool
config PPC_PERF_CTRS
def_bool y
depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
help
This enables the powerpc-specific perf_event back-end.
config SMP
depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
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 (2-8192)"
range 2 8192
depends on SMP
default "32" if PPC64
default "4"
config NOT_COHERENT_CACHE
bool
depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
default n if PPC_47x
default y
config CHECK_CACHE_COHERENCY
bool
endmenu