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