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#

# Copyright (C) 2006 Martin Decky

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#

# - Redistributions of source code must retain the above copyright

#   notice, this list of conditions and the following disclaimer.

# - Redistributions in binary form must reproduce the above copyright

#   notice, this list of conditions and the following disclaimer in the

#   documentation and/or other materials provided with the distribution.

# - The name of the author may not be used to endorse or promote products

#   derived from this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#

## Toolchain configuration

#

TARGET = ppc-linux-gnu

TOOLCHAIN_DIR = /usr/local/ppc/bin

ifeq ($(COMPILER),native)

	CC = gcc

	AS = as

	LD = ld

	OBJCOPY = objcopy

	OBJDUMP = objdump

else

	CC = $(TOOLCHAIN_DIR)/$(TARGET)-gcc

	AS = $(TOOLCHAIN_DIR)/$(TARGET)-as

	LD = $(TOOLCHAIN_DIR)/$(TARGET)-ld

	OBJCOPY = $(TOOLCHAIN_DIR)/$(TARGET)-objcopy

	OBJDUMP = $(TOOLCHAIN_DIR)/$(TARGET)-objdump

endif

CFLAGS = -nostdinc -nostdlib -fno-builtin -Werror-implicit-function-declaration -Wmissing-prototypes -Werror -O3 -mcpu=powerpc -msoft-float -m32

DEFS = 

SOURCES = \

	main.c \

	ofw.c \

	printf.c \

	asm.S \

	boot.S

OBJECTS := $(addsuffix .o,$(basename $(SOURCES)))

.PHONY: all clean depend

all: image.boot

-include Makefile.depend

image.boot: depend $(OBJECTS) kernel.o init.o

	$(LD) -no-check-sections -N -T _link.ld $(OBJECTS) kernel.o init.o -o $@

depend:

	-makedepend $(DEFS) $(CFLAGS) -f - $(SOURCES) > Makefile.depend 2> /dev/null

clean:

	-rm -f $(OBJECTS) image.boot kernel.o init.o Makefile.depend

kernel.o: $(KERNEL)

	$(OBJCOPY) -I binary -O elf32-powerpc -B powerpc:common --rename-section .data=.kernel_image $(KERNEL) $@

init.o: $(INIT)

	$(OBJCOPY) -I binary -O elf32-powerpc -B powerpc:common --rename-section .data=.init_image $(INIT) $@

%.o: %.S

	$(CC) $(DEFS) $(CFLAGS) -D__ASM__ -c $< -o $@

%.o: %.c

	$(CC) $(DEFS) $(CFLAGS) -c $< -o $@