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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.
#

include ../../../../version
include ../../../Makefile.config

## Toolchain configuration
#

ifndef CROSS_PREFIX
    CROSS_PREFIX = /usr/local
endif

BFD_NAME = elf32-powerpc
BFD_ARCH = powerpc:common
TARGET = ppc-linux-gnu
TOOLCHAIN_DIR = $(CROSS_PREFIX)/ppc/bin

ifeq ($(COMPILER),gcc_native)
    CC = gcc
    AS = as
    LD = ld
    OBJCOPY = objcopy
    OBJDUMP = objdump
endif

ifeq ($(COMPILER),gcc_cross)
    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 = -DRELEASE=\"$(RELEASE)\" -I. -I../../../generic -I../../../genarch -nostdinc -nostdlib -fno-builtin -Werror-implicit-function-declaration -Wmissing-prototypes -Werror -O3 -mcpu=powerpc -msoft-float -m32

ifdef REVISION
    CFLAGS += "-DREVISION=\"$(REVISION)\""
endif

ifdef TIMESTAMP
    CFLAGS += "-DTIMESTAMP=\"$(TIMESTAMP)\""
endif

SOURCES = \
    main.c \
    ofwarch.c \
    _components.c \
    ../../../genarch/ofw.c \
    ../../../generic/printf.c \
    asm.S \
    boot.S

COMPONENTS = \
    $(KERNELDIR)/kernel.bin \
    $(USPACEDIR)/srv/ns/ns \
    $(USPACEDIR)/srv/loader/loader \
    $(USPACEDIR)/app/init/init \
    $(USPACEDIR)/srv/devmap/devmap \
    $(USPACEDIR)/srv/rd/rd \
    $(USPACEDIR)/srv/vfs/vfs 
ifeq ($(RDFMT),tmpfs)
    COMPONENTS += $(USPACEDIR)/srv/fs/tmpfs/tmpfs
endif
ifeq ($(RDFMT),fat)
    COMPONENTS += $(USPACEDIR)/srv/fs/fat/fat
endif

RD_TASKS = \
    $(USPACEDIR)/srv/fb/fb \
    $(USPACEDIR)/srv/kbd/kbd \
    $(USPACEDIR)/srv/console/console \
    $(USPACEDIR)/srv/fs/tmpfs/tmpfs \
    $(USPACEDIR)/srv/fs/fat/fat \
    $(USPACEDIR)/app/tetris/tetris \
    $(USPACEDIR)/app/tester/tester \
    $(USPACEDIR)/app/klog/klog \
    $(USPACEDIR)/app/bdsh/bdsh

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

.PHONY: all clean depend

all: image.boot

-include Makefile.depend

image.boot: depend _components.h _link.ld $(COMPONENT_OBJECTS) initrd.o $(OBJECTS)
    $(LD) -no-check-sections -N -T _link.ld $(COMPONENT_OBJECTS) initrd.o $(OBJECTS) -o $@

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

clean:
    -for task in $(RD_TASKS) ; do \
        rm -f $(USPACEDIR)/dist/sbin/`basename $$task` ; \
    done
    -rm -f _components.h _components.c _link.ld $(COMPONENT_OBJECTS) initrd.o $(OBJECTS) initrd.img image.boot Makefile.depend

_components.h _components.c _link.ld $(COMPONENT_OBJECTS) initrd.o: $(COMPONENTS) $(RD_TASKS) _link.ld.in
    for task in $(RD_TASKS) ; do \
        cp $$task $(USPACEDIR)/dist/sbin/ ; \
    done
ifeq ($(RDFMT),tmpfs)
    ../../../../tools/mktmpfs.py $(USPACEDIR)/dist/ initrd.fs
endif
ifeq ($(RDFMT),fat)
    ../../../../tools/mkfat.sh $(USPACEDIR)/dist/ initrd.fs
endif
    ../../../../tools/mkhord.py 4096 initrd.fs initrd.img
    rm initrd.fs
    ../../../tools/pack.py $(OBJCOPY) $(BFD_NAME) $(BFD_ARCH) 4096 "unsigned int" $(COMPONENTS) ./initrd.img

%.o: %.S
    $(CC) $(DEFS) $(CFLAGS) -D__ASM__ -c $< -o $@

%.o: %.c
    $(CC) $(DEFS) $(CFLAGS) -c $< -o $@