1 # SPDX-License-Identifier: GPL-2.0-only 2 # 3 # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 4 # 5 6 KBUILD_DEFCONFIG := haps_hs_smp_defconfig 7 8 ifeq ($(CROSS_COMPILE),) 9 CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-) 10 endif 11 12 cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__ 13 14 tune-mcpu-def-$(CONFIG_ISA_ARCOMPACT) := -mcpu=arc700 15 tune-mcpu-def-$(CONFIG_ISA_ARCV2) := -mcpu=hs38 16 17 ifeq ($(CONFIG_ARC_TUNE_MCPU),) 18 cflags-y += $(tune-mcpu-def-y) 19 else 20 tune-mcpu := $(CONFIG_ARC_TUNE_MCPU) 21 ifneq ($(call cc-option,$(tune-mcpu)),) 22 cflags-y += $(tune-mcpu) 23 else 24 # The flag provided by 'CONFIG_ARC_TUNE_MCPU' option isn't known by this compiler 25 # (probably the compiler is too old). Use ISA default mcpu flag instead as a safe option. 26 $(warning ** WARNING ** CONFIG_ARC_TUNE_MCPU flag '$(tune-mcpu)' is unknown, fallback to '$(tune-mcpu-def-y)') 27 cflags-y += $(tune-mcpu-def-y) 28 endif 29 endif 30 31 ifdef CONFIG_ARC_CURR_IN_REG 32 # For a global register definition, make sure it gets passed to every file 33 # We had a customer reported bug where some code built in kernel was NOT using 34 # any kernel headers, and missing the global register 35 # Can't do unconditionally because of recursive include issues 36 # due to <linux/thread_info.h> 37 LINUXINCLUDE += -include $(srctree)/arch/arc/include/asm/current.h 38 cflags-y += -ffixed-gp 39 endif 40 41 cflags-y += -fsection-anchors 42 43 cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock 44 cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape 45 46 ifdef CONFIG_ISA_ARCV2 47 48 ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS 49 cflags-y += -munaligned-access 50 else 51 cflags-y += -mno-unaligned-access 52 endif 53 54 ifndef CONFIG_ARC_HAS_LL64 55 cflags-y += -mno-ll64 56 endif 57 58 ifndef CONFIG_ARC_HAS_DIV_REM 59 cflags-y += -mno-div-rem 60 endif 61 62 endif 63 64 cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) 65 cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) 66 67 # small data is default for elf32 tool-chain. If not usable, disable it 68 # This also allows repurposing GP as scratch reg to gcc reg allocator 69 disable_small_data := y 70 cflags-$(disable_small_data) += -mno-sdata 71 72 cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian 73 ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 74 75 LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name) 76 77 # Modules with short calls might break for calls into builtin-kernel 78 KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode 79 80 # Finally dump eveything into kernel build system 81 KBUILD_CFLAGS += $(cflags-y) 82 KBUILD_AFLAGS += $(KBUILD_CFLAGS) 83 KBUILD_LDFLAGS += $(ldflags-y) 84 85 # w/o this dtb won't embed into kernel binary 86 core-y += arch/arc/boot/dts/ 87 88 core-y += arch/arc/plat-sim/ 89 core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/ 90 core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/ 91 core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/ 92 93 libs-y += arch/arc/lib/ $(LIBGCC) 94 95 boot := arch/arc/boot 96 97 boot_targets := uImage.bin uImage.gz uImage.lzma 98 99 PHONY += $(boot_targets) 100 $(boot_targets): vmlinux 101 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 102 103 uimage-default-y := uImage.bin 104 uimage-default-$(CONFIG_KERNEL_GZIP) := uImage.gz 105 uimage-default-$(CONFIG_KERNEL_LZMA) := uImage.lzma 106 107 PHONY += uImage 108 uImage: $(uimage-default-y) 109 @ln -sf $< $(boot)/uImage 110 @$(kecho) ' Image $(boot)/uImage is ready' 111 112 CLEAN_FILES += $(boot)/uImage
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