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>
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@ -7,6 +7,7 @@ config M68K
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select GENERIC_IRQ_SHOW
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select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
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select GENERIC_CPU_DEVICES
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select FPU if MMU
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config RWSEM_GENERIC_SPINLOCK
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bool
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@ -64,6 +65,9 @@ config CPU_HAS_NO_MULDIV64
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config CPU_HAS_ADDRESS_SPACES
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bool
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config FPU
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bool
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config HZ
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int
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default 1000 if CLEOPATRA
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