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__ 45KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals 46KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,) 47KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,) 48 49KBUILD_AFLAGS += -mlongcalls -mtext-section-literals 50 51ifneq ($(CONFIG_LD_NO_RELAX),) 52KBUILD_LDFLAGS := --no-relax 53endif 54 55ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1) 56CHECKFLAGS += -D__XTENSA_EB__ 57KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN 58endif 59ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1) 60CHECKFLAGS += -D__XTENSA_EL__ 61KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN 62endif 63 64vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y)) 65plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y)) 66 67KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs)) 68 69KBUILD_DEFCONFIG := iss_defconfig 70 71# Only build variant and/or platform if it includes a Makefile 72 73buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/) 74buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/) 75 76# Find libgcc.a 77 78LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) 79 80head-y := arch/xtensa/kernel/head.o 81core-y += arch/xtensa/kernel/ arch/xtensa/mm/ 82core-y += $(buildvar) $(buildplf) 83core-y += arch/xtensa/boot/dts/ 84 85libs-y += arch/xtensa/lib/ $(LIBGCC) 86drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/ 87 88boot := arch/xtensa/boot 89 90all Image zImage uImage: vmlinux 91 $(Q)$(MAKE) $(build)=$(boot) $@ 92 93archheaders: 94 $(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all 95 96define archhelp 97 @echo '* Image - Kernel ELF image with reset vector' 98 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)' 99 @echo '* uImage - U-Boot wrapped image' 100endef 101