1# 2# This file is subject to the terms and conditions of the GNU General Public 3# License. See the file "COPYING" in the main directory of this archive 4# for more details. 5# 6# Copyright (C) 2001 - 2005 Tensilica Inc. 7# Copyright (C) 2014 Cadence Design Systems Inc. 8# 9# This file is included by the global makefile so that you can add your own 10# architecture-specific flags and dependencies. Remember to do have actions 11# for "archclean" and "archdep" for cleaning up and making dependencies for 12# this architecture 13 14# Core configuration. 15# (Use VAR=<xtensa_config> to use another default compiler.) 16 17variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME)) 18 19VARIANT = $(variant-y) 20export VARIANT 21 22# Test for cross compiling 23 24ifneq ($(VARIANT),) 25 COMPILE_ARCH = $(shell uname -m) 26 27 ifneq ($(COMPILE_ARCH), xtensa) 28 ifndef CROSS_COMPILE 29 CROSS_COMPILE = xtensa_$(VARIANT)- 30 endif 31 endif 32endif 33 34# Platform configuration 35 36platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000 37platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss 38platform-$(CONFIG_XTENSA_PLATFORM_S6105) := s6105 39platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA) := xtfpga 40 41PLATFORM = $(platform-y) 42export PLATFORM 43 44# temporarily until string.h is fixed 45KBUILD_CFLAGS += -ffreestanding -D__linux__ 46 47KBUILD_CFLAGS += -pipe -mlongcalls 48 49KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,) 50 51ifneq ($(CONFIG_LD_NO_RELAX),) 52LDFLAGS := --no-relax 53endif 54 55ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1) 56CHECKFLAGS += -D__XTENSA_EB__ 57endif 58ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1) 59CHECKFLAGS += -D__XTENSA_EL__ 60endif 61 62vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y)) 63plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y)) 64 65ifeq ($(KBUILD_SRC),) 66KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs)) 67else 68KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs)) 69endif 70 71KBUILD_DEFCONFIG := iss_defconfig 72 73# Only build variant and/or platform if it includes a Makefile 74 75buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/) 76buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/) 77 78# Find libgcc.a 79 80LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) 81 82head-y := arch/xtensa/kernel/head.o 83core-y += arch/xtensa/kernel/ arch/xtensa/mm/ 84core-y += $(buildvar) $(buildplf) 85 86libs-y += arch/xtensa/lib/ $(LIBGCC) 87drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/ 88 89ifneq ($(CONFIG_BUILTIN_DTB),"") 90core-$(CONFIG_OF) += arch/xtensa/boot/dts/ 91endif 92 93boot := arch/xtensa/boot 94 95all: zImage 96 97bzImage : zImage 98 99zImage: vmlinux 100 $(Q)$(MAKE) $(build)=$(boot) $@ 101 102%.dtb: 103 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ 104 105define archhelp 106 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)' 107endef 108