1# 2# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 3# 4# This program is free software; you can redistribute it and/or modify 5# it under the terms of the GNU General Public License version 2 as 6# published by the Free Software Foundation. 7# 8 9KBUILD_DEFCONFIG := nsim_hs_defconfig 10 11cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__ 12cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7 13cflags-$(CONFIG_ISA_ARCV2) += -mcpu=hs38 14 15ifdef CONFIG_ARC_CURR_IN_REG 16# For a global register defintion, make sure it gets passed to every file 17# We had a customer reported bug where some code built in kernel was NOT using 18# any kernel headers, and missing the r25 global register 19# Can't do unconditionally because of recursive include issues 20# due to <linux/thread_info.h> 21LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h 22endif 23 24cflags-y += -fsection-anchors 25 26cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock 27cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape 28 29ifdef CONFIG_ISA_ARCV2 30 31ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS 32cflags-y += -munaligned-access 33else 34cflags-y += -mno-unaligned-access 35endif 36 37ifndef CONFIG_ARC_HAS_LL64 38cflags-y += -mno-ll64 39endif 40 41ifndef CONFIG_ARC_HAS_DIV_REM 42cflags-y += -mno-div-rem 43endif 44 45endif 46 47cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) 48cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) 49 50ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE 51# Generic build system uses -O2, we want -O3 52# Note: No need to add to cflags-y as that happens anyways 53# 54# Disable the false maybe-uninitialized warings gcc spits out at -O3 55ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,) 56endif 57 58# small data is default for elf32 tool-chain. If not usable, disable it 59# This also allows repurposing GP as scratch reg to gcc reg allocator 60disable_small_data := y 61cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp 62 63cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian 64ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 65 66LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name) 67 68# Modules with short calls might break for calls into builtin-kernel 69KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode 70 71# Finally dump eveything into kernel build system 72KBUILD_CFLAGS += $(cflags-y) 73KBUILD_AFLAGS += $(KBUILD_CFLAGS) 74KBUILD_LDFLAGS += $(ldflags-y) 75 76head-y := arch/arc/kernel/head.o 77 78# See arch/arc/Kbuild for content of core part of the kernel 79core-y += arch/arc/ 80 81# w/o this dtb won't embed into kernel binary 82core-y += arch/arc/boot/dts/ 83 84core-y += arch/arc/plat-sim/ 85core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/ 86core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/ 87core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/ 88core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/ 89 90ifdef CONFIG_ARC_PLAT_EZNPS 91KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include 92endif 93 94drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/ 95 96libs-y += arch/arc/lib/ $(LIBGCC) 97 98boot := arch/arc/boot 99 100#default target for make without any arguments. 101KBUILD_IMAGE := $(boot)/bootpImage 102 103all: bootpImage 104bootpImage: vmlinux 105 106boot_targets += uImage uImage.bin uImage.gz 107 108$(boot_targets): vmlinux 109 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 110 111archclean: 112 $(Q)$(MAKE) $(clean)=$(boot) 113