84f3fb7a2a
The traditional 68000 processors and the newer reduced instruction set ColdFire processors do not support the 32*32->64 multiply or the 64/32->32 divide instructions. This is not a difference based on the presence of a hardware MMU or not. Create a new config symbol to mark that a CPU type doesn't support the longer multiply/divide instructions. Use this then as a basis for using the fast 64bit based divide (in div64.h) and for linking in the extra libgcc functions that may be required (mulsi3, divsi3, etc). Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
147 lines
1.9 KiB
Text
147 lines
1.9 KiB
Text
config M68K
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bool
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default y
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select HAVE_IDE
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select HAVE_AOUT if MMU
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select HAVE_GENERIC_HARDIRQS
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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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config RWSEM_GENERIC_SPINLOCK
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bool
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default y
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config RWSEM_XCHGADD_ALGORITHM
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bool
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config ARCH_HAS_ILOG2_U32
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bool
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config ARCH_HAS_ILOG2_U64
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bool
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config GENERIC_CLOCKEVENTS
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bool
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config GENERIC_CMOS_UPDATE
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def_bool !MMU
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config GENERIC_GPIO
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bool
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config GENERIC_IOMAP
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def_bool MMU
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config GENERIC_CSUM
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bool
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config TIME_LOW_RES
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bool
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default y
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config ARCH_USES_GETTIMEOFFSET
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def_bool MMU
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config NO_IOPORT
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def_bool y
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config NO_DMA
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def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
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config ZONE_DMA
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bool
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default y
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config CPU_HAS_NO_BITFIELDS
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bool
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config CPU_HAS_NO_MULDIV64
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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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default 100
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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config MMU
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bool "MMU-based Paged Memory Management Support"
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default y
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help
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Select if you want MMU-based virtualised addressing space
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support by paged memory management. If unsure, say 'Y'.
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config MMU_MOTOROLA
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bool
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config MMU_SUN3
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bool
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depends on MMU && !MMU_MOTOROLA
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menu "Platform setup"
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source arch/m68k/Kconfig.cpu
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source arch/m68k/Kconfig.machine
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source arch/m68k/Kconfig.bus
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endmenu
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menu "Kernel Features"
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if COLDFIRE
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source "kernel/Kconfig.preempt"
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endif
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if !MMU || COLDFIRE
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source "kernel/time/Kconfig"
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endif
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source "mm/Kconfig"
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endmenu
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menu "Executable file formats"
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source "fs/Kconfig.binfmt"
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endmenu
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if !MMU
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menu "Power management options"
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config PM
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bool "Power Management support"
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help
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Support processor power management modes
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endmenu
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endif
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source "net/Kconfig"
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source "drivers/Kconfig"
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source "arch/m68k/Kconfig.devices"
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source "fs/Kconfig"
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source "arch/m68k/Kconfig.debug"
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source "security/Kconfig"
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source "crypto/Kconfig"
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source "lib/Kconfig"
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