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#####################
# #
# FoolOS Build Sys. #
# #
#####################
# main phony targets
.PHONY: all new run newrun stick clean
############ some constants ############
#submodules
SUBDIRS=boot1 boot2 font userspace
FOOLOS=FoolOS.img
FOOLOS_VDI=FoolOS.vdi
#take care to set this properly!
USB_STICK=/dev/sdf
#use our cross compiler
CC=i686-foolos-gcc
############ compiler flags ############
CFLAGS=
CFLAGS+=-fstack-protector-all
CFLAGS+=-Werror-implicit-function-declaration
CFLAGS+=-w
CFLAGS+=-ffreestanding
CFLATS+=-Wall
CFLAGS+=-Wextra
#CFLAGS+=-O3
CFLAGS+=-O0
#CFLAGS+=-nostdlib
CFLAGS+=-std=gnu11
CFLAGS+=-I.
CFLAGS+=-I/home/miguel/temp/fool-os-stuff/newlib-2.1.0/newlib/libc/include
#CFLAGS+=-lgcc
#CFLAGS+=-fno-zero-initialized-in-bss
#CFLAGS+= -O4
#CFLAGS+=-fdata-sections -ffunction-sections
#CFLAGS+= -Werror
LDFLAGS=
LDFLAGS+=-nostdlib
LDFLAGS+=-lgcc
#verbosity
#V = 0
#CC = @echo "Compiling $<..."; i686-foolos-gcc
#CC_1 = $(CCC)
#CC = $(CC_$(V))
############ source and object files and their deps ############
#kernel sources (asm and c)
SOURCES=
SOURCES+=$(wildcard ./kernel/*.c)
SOURCES+=$(wildcard ./video/*.c)
SOURCES+=$(wildcard ./lib/*/*.c)
SOURCES+=$(wildcard ./fs/*.c)
#derive kernel object files
OBJECTS=$(patsubst %.c, %.o, $(SOURCES))
#derive deps
DEPS=$(patsubst %.c, %.d, $(SOURCES))
####### ASM STUFF #####
ASM_SOURCES=$(wildcard ./asm/*.asm)
ASM_OBJECTS=$(patsubst %.asm, %.o, $(ASM_SOURCES))
KERNEL_ENTRY=./asm/kernel_entry.o
############ Final Targets ############
all: FoolOS.vdi FoolOS.img
new: clean all
########### INCLUDES ###################3
include Makefile.common
-include $(DEPS)
#### BINARIES AND SUBMODULES ########
BIN_KERNEL=kernel.bin
BIN_MBR=./boot1/mbr.bin
BIN_STAGE2=./boot2/stage2.bin
BIN_MP=./boot2/mp.bin
BIN_FOOLFONT=./font/binfont.bin
IMG_FILLUP=fill.img
IMG_USERSPACE=./userspace/ext2.img
######### RECURSIVE MAKES ########################
CLEANDIRS=$(SUBDIRS:%=clean-%)
.PHONY: $(SUBDIRS) $(CLEANDIRS)
$(SUBDIRS):
$(MAKE) -C $@
$(CLEANDIRS):
$(MAKE) -C $(@:clean-%=%) clean
############ linking kernel binary ############
# the kernel_entry.o needs to be FIRST!!
$(BIN_KERNEL): $(KERNEL_ENTRY) $(ASM_OBJECTS) $(OBJECTS)
$(CC) $(CFLAGS) $(LDFLAGS) -T linker.ld -o $@ $^
############ assembling of final image ############
# master boot record, kernel binary and fool-font
$(FOOLOS): $(BIN_KERNEL) $(SUBDIRS)
dd if=$(BIN_MBR) of=$@ bs=512 seek=0 conv=notrunc
dd if=$(BIN_STAGE2) of=$@ bs=512 seek=1 conv=notrunc
# kernel will start at 0x100000 in ram (this is what the booloader starts loading secotr: 10)
dd if=$(BIN_KERNEL) of=$@ bs=512 seek=10 conv=notrunc # kernel can be about 128KB (incl bss)
# the data will starts at 0x120000 in ram
dd if=$(IMG_USERSPACE) of=$@ bs=512 seek=266 conv=notrunc
############ virtual machines stuff ############
# vdi image for VirtualBox
$(FOOLOS_VDI): $(FOOLOS)
-rm FoolOS.vdi
VBoxManage convertfromraw $< $@ --uuid 2f11ca11-c35d-4240-b77e-79e37d32616c
# run in our local bochs (we need cirrus support for our vesa mode)
run-bochs: all
~/opt/bochs-2.6.6/bochs -q -f bochs/bochsrc -rc bochs/bochsdebug
run-qemu: all
qemu-system-i386 $(FOOLOS)
run: run-bochs
newrun: clean run
############ create bootable usb image ############
stick: $(FOOLOS)
cat $< > $(USB_STICK) && sync
xxd $(USB_STICK) | head -n 50
############ cleanup ############
clean: $(CLEANDIRS)
-rm *.bin $(FOOLOS) $(FOOLOS_VDI) $(KERNEL_ENTRY) $(ASM_OBJECTS) $(OBJECTS) $(IMG_FILLUP) $(BIN_MBR) $(BIN_MP) $(BIN_STAGE2) $(DEPS) bochs.out bochs.log ne2k-tx.log ne2k-txdump.txt
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