linux/arch/m68k/Kconfig
Greg Ungerer 9657a87205 m68k: make support for FPU hardware configurable
The classic m68k code has always supported an FPU (although it may have
been a software emulated one). The non-MMU m68k code has never supported FPU
hardware. To help in merging common code create a configation setting that
signifies if we are builing in FPU support or not.

This switch, CONFIG_FPU, is set as per the current use cases. So it is
always enabled if CONFIG_MMU is set, and disabled otherwise. With a little
extra code it will be possible to disable it on the classic m68k platforms
as well, and to enable it on non-MMU platforms that do have hardware FPU.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2012-03-05 09:43:05 +10:00

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config M68K
bool
default y
select HAVE_IDE
select HAVE_AOUT if MMU
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_SHOW
select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
select GENERIC_CPU_DEVICES
select FPU if MMU
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
config ARCH_HAS_ILOG2_U32
bool
config ARCH_HAS_ILOG2_U64
bool
config GENERIC_CLOCKEVENTS
bool
config GENERIC_GPIO
bool
config GENERIC_HWEIGHT
bool
default y
config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_CSUM
bool
config TIME_LOW_RES
bool
default y
config ARCH_USES_GETTIMEOFFSET
def_bool MMU && !COLDFIRE
config NO_IOPORT
def_bool y
config NO_DMA
def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
config ZONE_DMA
bool
default y
config CPU_HAS_NO_BITFIELDS
bool
config CPU_HAS_NO_MULDIV64
bool
config CPU_HAS_ADDRESS_SPACES
bool
config FPU
bool
config HZ
int
default 1000 if CLEOPATRA
default 100
source "init/Kconfig"
source "kernel/Kconfig.freezer"
config MMU
bool "MMU-based Paged Memory Management Support"
default y
select GENERIC_IOMAP
help
Select if you want MMU-based virtualised addressing space
support by paged memory management. If unsure, say 'Y'.
config MMU_MOTOROLA
bool
config MMU_COLDFIRE
bool
config MMU_SUN3
bool
depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
menu "Platform setup"
source arch/m68k/Kconfig.cpu
source arch/m68k/Kconfig.machine
source arch/m68k/Kconfig.bus
endmenu
menu "Kernel Features"
if COLDFIRE
source "kernel/Kconfig.preempt"
endif
if !MMU || COLDFIRE
source "kernel/time/Kconfig"
endif
source "mm/Kconfig"
endmenu
menu "Executable file formats"
source "fs/Kconfig.binfmt"
endmenu
if !MMU
menu "Power management options"
config PM
bool "Power Management support"
help
Support processor power management modes
endmenu
endif
source "net/Kconfig"
source "drivers/Kconfig"
source "arch/m68k/Kconfig.devices"
source "fs/Kconfig"
source "arch/m68k/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"