#Makefile for boot

#programs , flags, etc

ENTRYPOINT  = 0x30400

ENTRYOFFSET = 0X400


ASM     = nasm
DASM        = ndisasm
CC      = gcc
LD      = ld
ASMBFLAGS   = -I boot/include/
ASMKFLAGS   = -I include/ -f elf
CFLAGS      = -I include/ -m32 -c -fno-builtin
LDFLAGS     = -s -Ttext $(ENTRYPOINT)
DASMFLAGS   = -u -o $(ENTRYPOINT) -e $(ENTRYPOINT)


#this Program
ORANGESBOOT = boot/boot.bin boot/loader.bin
ORANGESKERNEL   = kernel.bin
OBJS        = kernel/kernel.o kernel/start.o lib/kliba.o lib/string.o
DASMOUTPUT  = kernel.bin.asm

#all Phony Targets
.PHONY : everything final image clean realclean disasm all buildimg

# Default starting position
everything : $(ORANGESBOOT) $(ORANGESKERNEL)

all : realclean everything

final : all clean

image : final buildimg

clean :
    rm -f $(OBJS)

realclean :
    rm -f $(OBJS) $(ORANGESBOOT) $(ORANGESKERNEL)

disasm :
    $(DASM) $(DASMFLAGS) $(ORANGESKERNEL) > $(DASMOUTPUT)

# We assume that "a.img" exists in current folder
buildimg :
    dd if=boot/boot.bin of=a.img bs=512 count=1 conv=notrunc
    sudo mount -o loop a.img /mnt/floppy/
    sudo cp -fv boot/loader.bin /mnt/floppy/
    sudo cp -fv kernel.bin /mnt/floppy
    sudo umount /mnt/floppy

boot/boot.bin : boot/boot.asm boot/include/load.inc boot/include/fat12hdr.inc
    $(ASM) $(ASMBFLAGS) -o $@ $<

boot/loader.bin : boot/loader.asm boot/include/load.inc \
            boot/include/fat12hdr.inc boot/include/pm.inc \
            boot/include/lib.inc
    $(ASM) $(ASMBFLAGS) -o $@ $<

$(ORANGESKERNEL) : $(OBJS)
    $(LD) -m elf_i386  $(LDFLAGS) -o $(ORANGESKERNEL) $(OBJS)

kernel/kernel.o : kernel/kernel.asm
    $(ASM) $(ASMKFLAGS) -o $@ $<

kernel/start.o : kernel/start.c include/type.h include/const.h include/protect.h
    $(CC) $(CFLAGS) -o $@ $<

lib/kliba.o : lib/kliba.asm
    $(ASM) $(ASMKFLAGS) -o $@ $<

lib/string.o : lib/string.asm
    $(ASM) $(ASMKFLAGS) -o $@ $<