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=archs 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 24upto_gcc44 := $(call cc-ifversion, -le, 0404, y) 25atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y) 26 27cflags-$(atleast_gcc44) += -fsection-anchors 28 29cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock 30cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape 31 32ifdef CONFIG_ISA_ARCV2 33 34ifndef CONFIG_ARC_HAS_LL64 35cflags-y += -mno-ll64 36endif 37 38ifndef CONFIG_ARC_HAS_DIV_REM 39cflags-y += -mno-div-rem 40endif 41 42endif 43 44cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) 45cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) 46 47ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE 48# Generic build system uses -O2, we want -O3 49# Note: No need to add to cflags-y as that happens anyways 50# 51# Disable the false maybe-uninitialized warings gcc spits out at -O3 52ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,) 53endif 54 55# small data is default for elf32 tool-chain. If not usable, disable it 56# This also allows repurposing GP as scratch reg to gcc reg allocator 57disable_small_data := y 58cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp 59 60cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian 61ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 62 63# STAR 9000518362: (fixed with binutils shipping with gcc 4.8) 64# arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept 65# --build-id w/o "-marclinux". Default arc-elf32-ld is OK 66ldflags-$(upto_gcc44) += -marclinux 67 68LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name) 69 70# Modules with short calls might break for calls into builtin-kernel 71KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode 72 73# Finally dump eveything into kernel build system 74KBUILD_CFLAGS += $(cflags-y) 75KBUILD_AFLAGS += $(KBUILD_CFLAGS) 76LDFLAGS += $(ldflags-y) 77 78head-y := arch/arc/kernel/head.o 79 80# See arch/arc/Kbuild for content of core part of the kernel 81core-y += arch/arc/ 82 83# w/o this dtb won't embed into kernel binary 84core-y += arch/arc/boot/dts/ 85 86core-y += arch/arc/plat-sim/ 87core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/ 88core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/ 89core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/ 90core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/ 91 92ifdef CONFIG_ARC_PLAT_EZNPS 93KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include 94endif 95 96drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/ 97 98libs-y += arch/arc/lib/ $(LIBGCC) 99 100boot := arch/arc/boot 101 102#default target for make without any arguments. 103KBUILD_IMAGE := $(boot)/bootpImage 104 105all: bootpImage 106bootpImage: vmlinux 107 108boot_targets += uImage uImage.bin uImage.gz 109 110$(boot_targets): vmlinux 111 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 112 113%.dtb %.dtb.S %.dtb.o: scripts 114 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ 115 116dtbs: scripts 117 $(Q)$(MAKE) $(build)=$(boot)/dts 118 119archclean: 120 $(Q)$(MAKE) $(clean)=$(boot) 121