linux/arch/xtensa/Makefile
Max Filippov 9a736fcb09 xtensa: clean up bootable image build targets
Currently xtensa uses 'zImage' as a synonym of 'all', but in fact xtensa
supports three targets: 'Image' (ELF image with reset vector), 'zImage'
(compressed redboot image) and 'uImage' (U-Boot image).
Provide separate 'Image', 'zImage' and 'uImage' make targets that only
build corresponding image type. Make 'all' build all images appropriate
for a platform.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-03-01 12:32:50 -08:00

111 lines
3.1 KiB
Makefile

#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 2001 - 2005 Tensilica Inc.
# Copyright (C) 2014 Cadence Design Systems Inc.
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
# Core configuration.
# (Use VAR=<xtensa_config> to use another default compiler.)
variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME))
VARIANT = $(variant-y)
export VARIANT
# Test for cross compiling
ifneq ($(VARIANT),)
COMPILE_ARCH = $(shell uname -m)
ifneq ($(COMPILE_ARCH), xtensa)
ifndef CROSS_COMPILE
CROSS_COMPILE = xtensa_$(VARIANT)-
endif
endif
endif
# Platform configuration
platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000
platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss
platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA) := xtfpga
PLATFORM = $(platform-y)
export PLATFORM
# temporarily until string.h is fixed
KBUILD_CFLAGS += -ffreestanding -D__linux__
KBUILD_CFLAGS += -pipe -mlongcalls
KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
ifneq ($(CONFIG_LD_NO_RELAX),)
LDFLAGS := --no-relax
endif
ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
CHECKFLAGS += -D__XTENSA_EB__
KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN
endif
ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
CHECKFLAGS += -D__XTENSA_EL__
KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN
endif
vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
ifeq ($(KBUILD_SRC),)
KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
else
KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
endif
KBUILD_DEFCONFIG := iss_defconfig
# Only build variant and/or platform if it includes a Makefile
buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
# Find libgcc.a
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
head-y := arch/xtensa/kernel/head.o
core-y += arch/xtensa/kernel/ arch/xtensa/mm/
core-y += $(buildvar) $(buildplf)
libs-y += arch/xtensa/lib/ $(LIBGCC)
drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/
ifneq ($(CONFIG_BUILTIN_DTB),"")
core-$(CONFIG_OF) += arch/xtensa/boot/dts/
endif
boot := arch/xtensa/boot
all Image zImage uImage: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
%.dtb:
$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
dtbs: scripts
$(Q)$(MAKE) $(build)=$(boot)/dts
define archhelp
@echo '* Image - Kernel ELF image with reset vector'
@echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
@echo '* uImage - U-Boot wrapped image'
@echo ' dtbs - Build device tree blobs for enabled boards'
endef