RISCV ?= $(CURDIR)/toolchain PATH := $(RISCV)/bin:$(PATH) srcdir := $(dir $(realpath $(lastword $(MAKEFILE_LIST)))) srcdir := $(srcdir:/=) confdir := $(srcdir)/conf wrkdir := $(CURDIR)/work toolchain_srcdir := $(srcdir)/riscv-gnu-toolchain toolchain_wrkdir := $(wrkdir)/riscv-gnu-toolchain toolchain_dest := $(CURDIR)/toolchain 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 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 target := riscv64-unknown-linux-gnu .PHONY: all all: $(hex) @echo @echo Find the SD-card image in work/bbl.bin @echo Program it with: dd if=work/bbl.bin of=/dev/sd-your-card bs=1M @echo $(toolchain_dest)/bin/$(target)-gcc: $(toolchain_srcdir) mkdir -p $(toolchain_wrkdir) cd $(toolchain_wrkdir); $(toolchain_srcdir)/configure --prefix=$(toolchain_dest) $(MAKE) -C $(toolchain_wrkdir) linux $(buildroot_tar): $(buildroot_srcdir) $(RISCV)/bin/$(target)-gcc $(MAKE) -C $< RISCV=$(RISCV) PATH=$(PATH) O=$(buildroot_wrkdir) riscv64_defconfig $(MAKE) -C $< RISCV=$(RISCV) PATH=$(PATH) O=$(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 --exclude ./usr/share/locale touch $@ $(linux_wrkdir)/.config: $(linux_defconfig) $(linux_srcdir) mkdir -p $(dir $@) cp -p $< $@ $(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) && $ $@ .PHONY: sysroot vmlinux bbl sysroot: $(sysroot) vmlinux: $(vmlinux) bbl: $(bbl) .PHONY: clean clean: rm -rf -- $(wrkdir) $(toolchain_dest)