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# SPDX-License-Identifier: GPL-2.0-only # # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) # KBUILD_DEFCONFIG := nsim_hs_defconfig ifeq ($(CROSS_COMPILE),) CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-) endif cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__ cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7 cflags-$(CONFIG_ISA_ARCV2) += -mcpu=hs38 ifdef CONFIG_ARC_CURR_IN_REG # For a global register defintion, make sure it gets passed to every file # We had a customer reported bug where some code built in kernel was NOT using # any kernel headers, and missing the r25 global register # Can't do unconditionally because of recursive include issues # due to <linux/thread_info.h> LINUXINCLUDE += -include $(srctree)/arch/arc/include/asm/current.h endif cflags-y += -fsection-anchors cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape ifdef CONFIG_ISA_ARCV2 ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS cflags-y += -munaligned-access else cflags-y += -mno-unaligned-access endif ifndef CONFIG_ARC_HAS_LL64 cflags-y += -mno-ll64 endif ifndef CONFIG_ARC_HAS_DIV_REM cflags-y += -mno-div-rem endif endif cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) # small data is default for elf32 tool-chain. If not usable, disable it # This also allows repurposing GP as scratch reg to gcc reg allocator disable_small_data := y cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name) # Modules with short calls might break for calls into builtin-kernel KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode # Finally dump eveything into kernel build system KBUILD_CFLAGS += $(cflags-y) KBUILD_AFLAGS += $(KBUILD_CFLAGS) KBUILD_LDFLAGS += $(ldflags-y) head-y := arch/arc/kernel/head.o # See arch/arc/Kbuild for content of core part of the kernel core-y += arch/arc/ # w/o this dtb won't embed into kernel binary core-y += arch/arc/boot/dts/ core-y += arch/arc/plat-sim/ core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/ core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/ core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/ core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/ ifdef CONFIG_ARC_PLAT_EZNPS KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include endif drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/ libs-y += arch/arc/lib/ $(LIBGCC) boot := arch/arc/boot boot_targets := uImage.bin uImage.gz uImage.lzma PHONY += $(boot_targets) $(boot_targets): vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ uimage-default-y := uImage.bin uimage-default-$(CONFIG_KERNEL_GZIP) := uImage.gz uimage-default-$(CONFIG_KERNEL_LZMA) := uImage.lzma PHONY += uImage uImage: $(uimage-default-y) @ln -sf $< $(boot)/uImage @$(kecho) ' Image $(boot)/uImage is ready' CLEAN_FILES += $(boot)/uImage archclean: $(Q)$(MAKE) $(clean)=$(boot)