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 = $(variant-y) 20export VARIANT 21 22ifneq ($(VARIANT),) 23 ifdef cross_compiling 24 ifndef CROSS_COMPILE 25 CROSS_COMPILE = xtensa_$(VARIANT)- 26 endif 27 endif 28endif 29 30# Platform configuration 31 32platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000 33platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss 34platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA) := xtfpga 35 36PLATFORM = $(platform-y) 37export PLATFORM 38 39# temporarily until string.h is fixed 40KBUILD_CFLAGS += -ffreestanding -D__linux__ 41KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals 42KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,) 43KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,) 44 45KBUILD_AFLAGS += -mlongcalls -mtext-section-literals 46 47ifneq ($(CONFIG_LD_NO_RELAX),) 48KBUILD_LDFLAGS := --no-relax 49endif 50 51CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__) 52 53vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y)) 54plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y)) 55 56KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs)) 57 58KBUILD_DEFCONFIG := iss_defconfig 59 60# Only build variant and/or platform if it includes a Makefile 61 62buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/) 63buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/) 64 65# Find libgcc.a 66 67LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) 68 69head-y := arch/xtensa/kernel/head.o 70core-y += arch/xtensa/kernel/ arch/xtensa/mm/ 71core-y += $(buildvar) $(buildplf) 72core-y += arch/xtensa/boot/dts/ 73 74libs-y += arch/xtensa/lib/ $(LIBGCC) 75 76boot := arch/xtensa/boot 77 78all Image zImage uImage xipImage: vmlinux 79 $(Q)$(MAKE) $(build)=$(boot) $@ 80 81archheaders: 82 $(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all 83 84define archhelp 85 @echo '* Image - Kernel ELF image with reset vector' 86 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)' 87 @echo '* uImage - U-Boot wrapped image' 88 @echo ' xipImage - XIP image' 89endef 90