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Makefile.mips64
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Makefile.mips64
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# Copyright (C) 2015 Gan Quan <[email protected]>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
# Makefile for MIPS64
######## BEGIN CONFIG ########
# Cross-platform toolchain prefix.
# E.g. if
# CROSS_COMPILE = mips64-linux-gnu-
# then the cross-compiler should be
# mips64-linux-gnu-gcc
# The linker should be
# mips64-linux-gnu-ld
# etc.
CROSS_COMPILE = mips64el-n64-linux-uclibc-
# Machine name.
MACH = loongson3a
# Target device for kernel & bootloader installation.
#
# IMPORTANT:
# Make sure you select the correct device, or your own hard disk may become
# corrupted!
# I hadn't write the backup mechanism for kernel installation yet, but one
# can recover MBR in case of accidents. Refer to boot/Makefile.mips64 for
# more information.
INSTALLDEV = /dev/sdb
CCOMPILER = gcc
# Only needed if the installation needs sudo privileges
SUDO = sudo
# The partition number. DO NOT CHANGE THIS.
PARTNO = 2
######## END CONFIG ########
# Retrieve root directory.
# The expression $(shell <command>) executes the shell command and returns
# the output.
ROOTDIR = $(shell pwd)
# Capitalize $MACH, this is to be used for defining machine-specific
# macro MACH_$(UPPERMACH).
# E.g. if
# MACH = loongson3a
# then gcc compiles source code with
# MACH_LOONGSON3A
# defined.
UPPERMACH = $(shell echo $(MACH) | tr a-z- A-Z_)
# Cross-platform versions of GNU toolchain
CC = $(CROSS_COMPILE)$(CCOMPILER)
CPP = $(CROSS_COMPILE)cpp
LD = $(CROSS_COMPILE)ld
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
# Specify all absolute include path, prepending each with -I (the include
# directory flag for gcc)
INCFLAG = -I. -I./include
INCFLAG += -I./include/arch/$(ARCH)
INCFLAG += -I./include/arch/$(ARCH)/asm/mach-$(MACH)
DEFS = -DMACH_$(UPPERMACH) -DELF64
# Compiling flags for GCC, see gcc(1) for details of each option.
CFLAGS = -O2 -G 0 -mno-abicalls -fno-pic -Wall -mabi=64 -fno-builtin
CFLAGS += -nostdinc -nostdlib -ggdb -mips64r2 -gstabs -EL -mno-mips16
CFLAGS += $(INCFLAG) $(DEFS)
# Linker script for ld(1)
LDSCRIPT = kern/arch/$(ARCH)/ldscript.ld
# Linker flag for ld(1)
LDFLAGS = -EL -N
# All object files
OBJS = kern/arch/$(ARCH)/start.o \
kern/arch/$(ARCH)/setup.o \
kern/init/main.o \
drivers/serial/uart16550.o \
drivers/serial/uart.o \
drivers/serial/uart-printf.o \
drivers/clock/mc146818.o \
lib/libc/stdio/snprintf.o \
lib/libc/string/memset.o
TEST_OBJS =
# Final program
BINARY = bootstrap
# Disassembly
DISASSEMBLY = $(BINARY).s
# Export all variables above to child make processes, which will
# spawn when compiling bootloader and userspace programs
export
# all: the default target when no target is specified in command
# line.
#
# Makes kernel and bootloader.
all: $(BINARY) boot tools
# elf: Make kernel by linking the object files and disassembling
# the binary program after all object files are compiled.
$(BINARY): $(OBJS) $(TEST_OBJS)
$(LD) $(LDFLAGS) -T $(LDSCRIPT) -o $(BINARY) $(OBJS) $(TEST_OBJS)
$(OBJDUMP) -S $(BINARY) >$(DISASSEMBLY)
# boot: Make bootloader.
# Change into boot/ directory and build there.
boot:
cd boot && make -f Makefile.$(ARCH)
# tools: Make tools
tools:
cd tools/stab && make
# install: Perform kernel and bootloader installation.
#
# First install bootloader by changing into boot/ directory and
# perform bootloader installation, then invoke the kernel installation
# perl script.
install: all
cd boot && make -f Makefile.$(ARCH) install
$(SUDO) dd if=$(BINARY) of=$(INSTALLDEV)$(PARTNO) conv=notrunc
# clean: Remove all files generated by make.
clean:
cd boot && make -f Makefile.$(ARCH) clean
cd tools/stab && make clean
rm -rf $(OBJS) $(BINARY)
# make by default doesn't know how to compile assemblies. So we specify
# the procedure here.
.S.o:
$(CC) $(CFLAGS) -c $< -o $*.o
.PHONY: all boot tools clean install test