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_XTFPGA) := xtfpga 39 40PLATFORM = $(platform-y) 41export PLATFORM 42 43# temporarily until string.h is fixed 44KBUILD_CFLAGS += -ffreestanding -D__linux__ 45 46KBUILD_CFLAGS += -pipe -mlongcalls 47 48KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,) 49 50ifneq ($(CONFIG_LD_NO_RELAX),) 51LDFLAGS := --no-relax 52endif 53 54ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1) 55CHECKFLAGS += -D__XTENSA_EB__ 56KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN 57endif 58ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1) 59CHECKFLAGS += -D__XTENSA_EL__ 60KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN 61endif 62 63vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y)) 64plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y)) 65 66ifeq ($(KBUILD_SRC),) 67KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs)) 68else 69KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs)) 70endif 71 72KBUILD_DEFCONFIG := iss_defconfig 73 74# Only build variant and/or platform if it includes a Makefile 75 76buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/) 77buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/) 78 79# Find libgcc.a 80 81LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) 82 83head-y := arch/xtensa/kernel/head.o 84core-y += arch/xtensa/kernel/ arch/xtensa/mm/ 85core-y += $(buildvar) $(buildplf) 86 87libs-y += arch/xtensa/lib/ $(LIBGCC) 88drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/ 89 90ifneq ($(CONFIG_BUILTIN_DTB),"") 91core-$(CONFIG_OF) += arch/xtensa/boot/dts/ 92endif 93 94boot := arch/xtensa/boot 95 96all Image zImage uImage: vmlinux 97 $(Q)$(MAKE) $(build)=$(boot) $@ 98 99%.dtb: 100 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ 101 102dtbs: scripts 103 $(Q)$(MAKE) $(build)=$(boot)/dts 104 105define archhelp 106 @echo '* Image - Kernel ELF image with reset vector' 107 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)' 108 @echo '* uImage - U-Boot wrapped image' 109 @echo ' dtbs - Build device tree blobs for enabled boards' 110endef 111