freedom-u-sdk/Makefile

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Makefile
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srcdir := $(dir $(realpath $(lastword $(MAKEFILE_LIST))))
srcdir := $(srcdir:/=)
confdir := $(srcdir)/conf
wrkdir := $(CURDIR)/work
buildroot_srcdir := $(srcdir)/buildroot
buildroot_wrkdir := $(wrkdir)/buildroot
buildroot_tar := $(buildroot_wrkdir)/images/rootfs.tar
sysroot_stamp := $(wrkdir)/.sysroot
sysroot := $(wrkdir)/sysroot
linux_srcdir := $(srcdir)/linux
linux_wrkdir := $(wrkdir)/linux
linux_defconfig := $(confdir)/linux_defconfig
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linux_release := linux-4.6.2.tar.xz
linux_url := ftp://ftp.kernel.org/pub/linux/kernel/v4.x
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vmlinux := $(linux_wrkdir)/vmlinux
vmlinux_stripped := $(linux_wrkdir)/vmlinux-stripped
pk_srcdir := $(srcdir)/riscv-pk
pk_wrkdir := $(wrkdir)/riscv-pk
bbl := $(pk_wrkdir)/bbl
bin := $(wrkdir)/bbl.bin
hex := $(wrkdir)/bbl.hex
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target := riscv64-unknown-linux-gnu
.PHONY: all
all: $(hex)
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$(buildroot_tar): $(buildroot_srcdir)
$(MAKE) -C $< O=$(buildroot_wrkdir) riscv64_defconfig
$(MAKE) -C $< O=$(buildroot_wrkdir)
.PHONY: buildroot-menuconfig
buildroot-menuconfig: $(buildroot_srcdir)
$(MAKE) -C $< O=$(buildroot_wrkdir) menuconfig
$(sysroot_stamp): $(buildroot_tar)
mkdir -p $(sysroot)
tar -xpf $< -C $(sysroot) --exclude ./dev
touch $@
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$(linux_release):
curl -O $(linux_url)/$(linux_release)
$(linux_wrkdir)/.config: $(linux_defconfig) $(linux_srcdir) $(linux_release)
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mkdir -p $(dir $@)
cp -p $< $@
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cd $(linux_srcdir); tar --strip-components=1 -xJf ../$(linux_release); git checkout .gitignore arch/.gitignore
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$(MAKE) -C $(linux_srcdir) O=$(linux_wrkdir) ARCH=riscv olddefconfig
$(vmlinux): $(linux_srcdir) $(linux_wrkdir)/.config $(sysroot_stamp)
$(MAKE) -C $< O=$(linux_wrkdir) \
CONFIG_INITRAMFS_SOURCE="$(confdir)/initramfs.txt $(sysroot)" \
CONFIG_INITRAMFS_ROOT_UID=$(shell id -u) \
CONFIG_INITRAMFS_ROOT_GID=$(shell id -g) \
ARCH=riscv \
vmlinux
$(vmlinux_stripped): $(vmlinux)
$(target)-strip -o $@ $<
.PHONY: linux-menuconfig
linux-menuconfig: $(linux_wrkdir)/.config
$(MAKE) -C $(linux_srcdir) O=$(dir $<) ARCH=riscv menuconfig savedefconfig
$(bbl): $(pk_srcdir) $(vmlinux_stripped)
rm -rf $(pk_wrkdir)
mkdir -p $(pk_wrkdir)
cd $(pk_wrkdir) && $</configure \
--host=$(target) \
--with-payload=$(vmlinux_stripped)
$(MAKE) -C $(pk_wrkdir)
$(bin): $(bbl)
$(target)-objcopy -S -O binary --change-addresses -0x80000000 $< $@
$(hex): $(bin)
xxd -c1 -p $< > $@
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.PHONY: sysroot vmlinux bbl
sysroot: $(sysroot)
vmlinux: $(vmlinux)
bbl: $(bbl)
.PHONY: clean
clean:
rm -rf -- $(wrkdir)