Makefile.inc

# This Makefile is included by src/mainboards/VENDOR/BOARD/Makefile
TOP         = $(abspath $(CURDIR)/../../../..)
VENDOR      = $(notdir $(shell dirname $(CURDIR)))
BOARD       = $(notdir $(CURDIR))
MODE       ?= release
FIXED_DTFS  = fixed-dtfs.dtb
TOOLS_DIR   = $(TOP)/tools
FLASHROM_PROGRAMMER ?= dediprog
# Cargo will build the tools using the target from the .cargo directory which
# does not work so well if you are cross-compiling. This shell one-liner gets
# the target of the current system which can be passed via --target for
# building tools
TOOLS_TARGET = $(shell rustc -Z unstable-options --print target-spec-json | sed -n -e 's/.*llvm-target": "\([^"]\+\).*/\1/p')
CARGO_FLAGS = --verbose

# Override variables depending on the build.
include $(TOP)/Makefile.mode.$(MODE).inc

# ELF and BOOTBLOB are intermediate files while IMAGE is the final firmware
# image ready to be flashed onto the machine.
ELF      = $(TARGET_DIR)/$(BOARD)
BOOTBLOB = $(TARGET_DIR)/bootblob.bin
IMAGE    = $(TARGET_DIR)/image.bin

$(info ***** Oreboot Build Config *****)
$(info TOP          = $(TOP))
$(info VENDOR       = $(VENDOR))
$(info BOARD        = $(BOARD))
$(info MODE         = $(MODE))
$(info TARGET       = $(TARGET))
$(info TARGET_DIR   = $(TARGET_DIR))
$(info TOOLS_TARGET = $(TOOLS_TARGET))
$(info cargo --version  = $(shell cargo --version))
$(info rustc --version  = $(shell rustc --version))
$(info rustup --version = $(shell rustup --version))
$(info **********)

$(TARGET_DIR)/%.dtb: %.dts
	dtc $< -O dtb -o $@

$(IMAGE): $(BOOTBLOB) $(TARGET_DIR)/$(FIXED_DTFS)
	TARGET_DIR=$(TARGET_DIR) cargo run --target $(TOOLS_TARGET) --manifest-path $(TOOLS_DIR)/layoutflash/Cargo.toml -- $(TARGET_DIR)/$(FIXED_DTFS) $@
	@printf "**\n** Output: $@\n**\n"

$(TARGET_DIR)/bootblob.bin: $(ELF)
	rust-objcopy -O binary -R .bss $< $@

# Re-run cargo every time.
.PHONY: $(ELF)
$(ELF):
	RUST_TARGET_PATH=$(TOP)/src/custom_targets cargo xbuild $(CARGO_FLAGS)

clean:
	rm -rf target/

# The rest of this file are conveniences for debugging.
objdump: $(ELF)
	cargo objdump -- -d $(ELF)

flash: $(IMAGE)
	sudo $(which flashrom) -V -w $(IMAGE) -p $(FLASHROM_PROGRAMMER)