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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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1ac832509f
The Andes FPU coprocessor does not support denormalized number handling. According to the specification, FPU generates a denorm input exception that requires the kernel to deal with this instrution operation when it encounters denormalized operands. Hence an nds32 FPU ISA emulator in the kernel is required to meet requirement. Signed-off-by: Vincent Chen <vincentc@andestech.com> Signed-off-by: Nickhu <nickhu@andestech.com> Acked-by: Greentime Hu <greentime@andestech.com> Signed-off-by: Greentime Hu <greentime@andestech.com>
79 lines
1.8 KiB
Makefile
79 lines
1.8 KiB
Makefile
LDFLAGS_vmlinux := --no-undefined -X
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OBJCOPYFLAGS := -O binary -R .note -R .note.gnu.build-id -R .comment -S
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KBUILD_DEFCONFIG := defconfig
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comma = ,
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ifdef CONFIG_FUNCTION_TRACER
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arch-y += -malways-save-lp -mno-relax
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endif
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# Avoid generating FPU instructions
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arch-y += -mno-ext-fpu-sp -mno-ext-fpu-dp -mfloat-abi=soft
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KBUILD_CFLAGS += $(call cc-option, -mno-sched-prolog-epilog)
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KBUILD_CFLAGS += -mcmodel=large
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KBUILD_CFLAGS +=$(arch-y) $(tune-y)
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KBUILD_AFLAGS +=$(arch-y) $(tune-y)
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#Default value
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head-y := arch/nds32/kernel/head.o
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textaddr-y := $(CONFIG_PAGE_OFFSET)+0xc000
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TEXTADDR := $(textaddr-y)
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export TEXTADDR
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# If we have a machine-specific directory, then include it in the build.
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core-y += arch/nds32/kernel/ arch/nds32/mm/
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core-$(CONFIG_FPU) += arch/nds32/math-emu/
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libs-y += arch/nds32/lib/
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ifneq '$(CONFIG_NDS32_BUILTIN_DTB)' '""'
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BUILTIN_DTB := y
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else
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BUILTIN_DTB := n
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endif
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ifdef CONFIG_CPU_LITTLE_ENDIAN
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KBUILD_CFLAGS += $(call cc-option, -EL)
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KBUILD_AFLAGS += $(call cc-option, -EL)
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KBUILD_LDFLAGS += $(call cc-option, -EL)
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CHECKFLAGS += -D__NDS32_EL__
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else
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KBUILD_CFLAGS += $(call cc-option, -EB)
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KBUILD_AFLAGS += $(call cc-option, -EB)
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KBUILD_LDFLAGS += $(call cc-option, -EB)
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CHECKFLAGS += -D__NDS32_EB__
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endif
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boot := arch/nds32/boot
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core-y += $(boot)/dts/
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.PHONY: FORCE
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Image: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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PHONY += vdso_install
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vdso_install:
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$(Q)$(MAKE) $(build)=arch/nds32/kernel/vdso $@
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prepare: vdso_prepare
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vdso_prepare: prepare0
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$(Q)$(MAKE) $(build)=arch/nds32/kernel/vdso include/generated/vdso-offsets.h
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CLEAN_FILES += include/asm-nds32/constants.h*
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# We use MRPROPER_FILES and CLEAN_FILES now
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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define archhelp
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echo ' Image - kernel image (arch/$(ARCH)/boot/Image)'
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endef
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