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# 8# This file is included by the global makefile so that you can add your own 9# architecture-specific flags and dependencies. Remember to do have actions 10# for "archclean" and "archdep" for cleaning up and making dependencies for 11# this architecture 12 13# Core configuration. 14# (Use VAR=<xtensa_config> to use another default compiler.) 15 16variant-$(CONFIG_XTENSA_VARIANT_FSF) := fsf 17variant-$(CONFIG_XTENSA_VARIANT_DC232B) := dc232b 18variant-$(CONFIG_XTENSA_VARIANT_S6000) := s6000 19variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom 20 21VARIANT = $(variant-y) 22export VARIANT 23 24# Test for cross compiling 25 26ifneq ($(VARIANT),) 27 COMPILE_ARCH = $(shell uname -m) 28 29 ifneq ($(COMPILE_ARCH), xtensa) 30 ifndef CROSS_COMPILE 31 CROSS_COMPILE = xtensa_$(VARIANT)- 32 endif 33 endif 34endif 35 36# Platform configuration 37 38platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000 39platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss 40platform-$(CONFIG_XTENSA_PLATFORM_S6105) := s6105 41platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA) := xtfpga 42 43PLATFORM = $(platform-y) 44export PLATFORM 45 46# temporarily until string.h is fixed 47KBUILD_CFLAGS += -ffreestanding -D__linux__ 48 49KBUILD_CFLAGS += -pipe -mlongcalls 50 51KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,) 52 53ifneq ($(CONFIG_LD_NO_RELAX),) 54LDFLAGS := --no-relax 55endif 56 57ifeq ($(shell echo -e __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1) 58CHECKFLAGS += -D__XTENSA_EB__ 59endif 60ifeq ($(shell echo -e __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1) 61CHECKFLAGS += -D__XTENSA_EL__ 62endif 63 64vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y)) 65plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y)) 66 67ifeq ($(KBUILD_SRC),) 68KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs)) 69else 70KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs)) 71endif 72 73KBUILD_DEFCONFIG := iss_defconfig 74 75# Only build variant and/or platform if it includes a Makefile 76 77buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/) 78buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/) 79 80# Find libgcc.a 81 82LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) 83 84head-y := arch/xtensa/kernel/head.o 85core-y += arch/xtensa/kernel/ arch/xtensa/mm/ 86core-y += $(buildvar) $(buildplf) 87 88libs-y += arch/xtensa/lib/ $(LIBGCC) 89 90ifneq ($(CONFIG_BUILTIN_DTB),"") 91core-$(CONFIG_OF) += arch/xtensa/boot/dts/ 92endif 93 94boot := arch/xtensa/boot 95 96all: zImage 97 98bzImage : zImage 99 100zImage: vmlinux 101 $(Q)$(MAKE) $(build)=$(boot) $@ 102 103%.dtb: 104 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ 105 106define archhelp 107 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)' 108endef 109