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_700_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 31ifndef CONFIG_ARC_HAS_LL64 32cflags-y += -mno-ll64 33endif 34 35ifndef CONFIG_ARC_HAS_DIV_REM 36cflags-y += -mno-div-rem 37endif 38 39endif 40 41cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) 42cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) 43 44ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE 45# Generic build system uses -O2, we want -O3 46# Note: No need to add to cflags-y as that happens anyways 47# 48# Disable the false maybe-uninitialized warings gcc spits out at -O3 49ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,) 50endif 51 52# small data is default for elf32 tool-chain. If not usable, disable it 53# This also allows repurposing GP as scratch reg to gcc reg allocator 54disable_small_data := y 55cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp 56 57cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian 58ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 59 60LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name) 61 62# Modules with short calls might break for calls into builtin-kernel 63KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode 64 65# Finally dump eveything into kernel build system 66KBUILD_CFLAGS += $(cflags-y) 67KBUILD_AFLAGS += $(KBUILD_CFLAGS) 68KBUILD_LDFLAGS += $(ldflags-y) 69 70head-y := arch/arc/kernel/head.o 71 72# See arch/arc/Kbuild for content of core part of the kernel 73core-y += arch/arc/ 74 75# w/o this dtb won't embed into kernel binary 76core-y += arch/arc/boot/dts/ 77 78core-y += arch/arc/plat-sim/ 79core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/ 80core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/ 81core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/ 82core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/ 83 84ifdef CONFIG_ARC_PLAT_EZNPS 85KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include 86endif 87 88drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/ 89 90libs-y += arch/arc/lib/ $(LIBGCC) 91 92boot := arch/arc/boot 93 94#default target for make without any arguments. 95KBUILD_IMAGE := $(boot)/bootpImage 96 97all: bootpImage 98bootpImage: vmlinux 99 100boot_targets += uImage uImage.bin uImage.gz 101 102$(boot_targets): vmlinux 103 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 104 105archclean: 106 $(Q)$(MAKE) $(clean)=$(boot) 107