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>
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 6f823dc..d318c60 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -7,6 +7,7 @@
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
@@ -64,6 +65,9 @@
config CPU_HAS_ADDRESS_SPACES
bool
+config FPU
+ bool
+
config HZ
int
default 1000 if CLEOPATRA