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Makefile

## SPDX-License-Identifier: MIT OR Apache-2.0
##
## Copyright (c) 2018-2020 Andre Richter <andre.o.richter@gmail.com>
# Default to the RPi3
ifndef BSP
BSP = rpi3
endif
# BSP-specific arguments
ifeq ($(BSP),rpi3)
TARGET = aarch64-unknown-none-softfloat
OUTPUT = kernel8.img
QEMU_BINARY = qemu-system-aarch64
QEMU_MACHINE_TYPE = raspi3
QEMU_RELEASE_ARGS = -d in_asm -display none
LINKER_FILE = src/bsp/raspberrypi/link.ld
RUSTC_MISC_ARGS = -C target-cpu=cortex-a53
else ifeq ($(BSP),rpi4)
TARGET = aarch64-unknown-none-softfloat
OUTPUT = kernel8.img
# QEMU_BINARY = qemu-system-aarch64
# QEMU_MACHINE_TYPE =
# QEMU_RELEASE_ARGS = -d in_asm -display none
LINKER_FILE = src/bsp/raspberrypi/link.ld
RUSTC_MISC_ARGS = -C target-cpu=cortex-a72
endif
SOURCES = $(wildcard **/*.rs) $(wildcard **/*.S) $(wildcard **/*.ld)
RUSTFLAGS = -C link-arg=-T$(LINKER_FILE) $(RUSTC_MISC_ARGS)
RUSTFLAGS_PEDANTIC = $(RUSTFLAGS) -D warnings -D missing_docs
COMPILER_ARGS = --target=$(TARGET) \
--features bsp_$(BSP) \
--release
RUSTC_CMD = cargo rustc $(COMPILER_ARGS)
DOC_CMD = cargo doc $(COMPILER_ARGS)
CLIPPY_CMD = cargo clippy $(COMPILER_ARGS)
OBJCOPY_CMD = cargo objcopy \
-- \
--strip-all \
-O binary
KERNEL_ELF = target/$(TARGET)/release/kernel
DOCKER_IMAGE = rustembedded/osdev-utils
DOCKER_CMD = docker run -it --rm -v $(shell pwd):/work/tutorial -w /work/tutorial
DOCKER_QEMU = $(DOCKER_CMD) $(DOCKER_IMAGE)
EXEC_QEMU = $(QEMU_BINARY) -M $(QEMU_MACHINE_TYPE)
.PHONY: all doc qemu clippy clean readelf objdump nm
all: clean $(OUTPUT)
$(KERNEL_ELF): $(SOURCES)
RUSTFLAGS="$(RUSTFLAGS_PEDANTIC)" $(RUSTC_CMD)
$(OUTPUT): $(KERNEL_ELF)
cp $< .
$(OBJCOPY_CMD) $< $(OUTPUT)
doc:
$(DOC_CMD) --document-private-items --open
ifeq ($(QEMU_MACHINE_TYPE),)
qemu:
@echo "This board is not yet supported for QEMU."
else
qemu: all
@$(DOCKER_QEMU) $(EXEC_QEMU) $(QEMU_RELEASE_ARGS) -kernel $(OUTPUT)
endif
clippy:
RUSTFLAGS="$(RUSTFLAGS_PEDANTIC)" $(CLIPPY_CMD)
clean:
rm -rf target
readelf:
readelf -a kernel
objdump:
cargo objdump --target $(TARGET) -- -disassemble -no-show-raw-insn -print-imm-hex kernel
nm:
cargo nm --target $(TARGET) -- -print-size kernel | sort