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