i still dont know what im doing

2020-03-01 16:43:23 +00:00 · 2020-03-01 16:43:23 +00:00 · bc238a3bf9
commit bc238a3bf9
parent 4847eb4d88
19 changed files with 203 additions and 1099 deletions
--- a/86
+++ b/86
@ -1,17 +1,81 @@
-.PHONY: default
+FLOPPY = 360

-cp437.bin: src/cp437.bmp scripts/bmp2font
-	scripts/bmp2font $< $@
+PROGRAMS = $(patsubst %.asm,%.com,$(wildcard com/*.asm))
+DISTFILES = $(PROGRAMS)
+ROMS =

-vga11.bin: src/vga11.asm cp437.bin
-	nasm -o $@ $<
+QEMU_ARCH = $(shell uname -m)
+QEMU = qemu-system-$(QEMU_ARCH)
+QEMU_ARGS = $(addprefix --option-rom ,$(ROMS))

-forth.bin: src/forth.asm
-	nasm -o $@ $<
+NASM = nasm
+NASM_ARGS = -s -Ilib -Plib/nasmcomp.asm -w-macro-params

-scripts/%: src/scripts/%.c
-	mkdir -p scripts
-	gcc -o $@ $<
+EMUL = utils/emul
+
+ifdef KVM
+QEMU_ARGS += --enable-kvm
+endif
+
+ifdef DEBUG
+ROMS += rom/debug.rom
+NASM_ARGS += -l $(basename $@).lst
+endif
+
+ifndef DISPLAY
+QEMU_ARGS += --display curses
+endif
+
+.PHONY: default bootstrap clean qemu-rom qemu-floppy qemu-pxe
+
+default: fdimage.img
+
+# Host utils
+utils/%: src/utils/%.c
+	mkdir -p utils
+	$(CC) -o $@ $<
+
+cp437.bin: src/cp437.bmp utils/bmp2font
+	utils/bmp2font $< $@
+
+# BIOS option roms
+rom/%.rom: rom/%.asm utils/fix-rom
+	$(NASM) $(NASM_ARGS) -o $@ $< && utils/fix-rom $@
+
+# COM programs
+%.com: %.asm
+	$(NASM) $(NASM_ARGS) -DCOM -DBASE=0x0100 -o $@ $<
+
+# Bootloaders, first sector on partition
+%.bs: %.asm
+	$(NASM) $(NASM_ARGS) -DBOOT -DBASE=0x7C00 -o $@ $<
+	: check boot signature
+	test "$$(echo $$(xxd -p -l 2 -s 510 pxe.bs))" == 55aa
+
+# Network bootstrap protocol as used for PXE
+%.0: %.asm
+	$(NASM) $(NASM_ARGS) -DNBP -DBASE=0x7C00 -o $@ $<
+
+fdimage.img: boot/fat.bs $(BDOSIMG) $(BIOSIMG) $(DISTFILES)
+	mformat -R 9 -C -i $@ -f $(FLOPPY) -B boot/fat.bs ::
+	dd if=$(BDOSIMG) bs=512 seek=1 count=4 conv=notrunc of=$@
+	dd if=$(BIOSIMG) bs=512 seek=5 count=4 conv=notrunc of=$@
+	mcopy -i $@ $(DISTFILES) ::
+
+hdimage.img: boot/mbr.bs fdimage.img
+	cat boot/mbr.bs fdimage.img >$@

 clean:
-	rm -f *.bin scripts/*
+	rm -f *.com *.bs *.0 *.lst *.img *.bin *.rom
+
+qemu-floppy: fdimage.img $(ROMS)
+	$(QEMU) $(QEMU_ARGS) -boot a -fda fdimage.img
+
+qemu-hdd: hdimage.img $(ROMS)
+	$(QEMU) $(QEMU_ARGS) -boot c -hda hdimage.img
+
+qemu-pxe: pxe.bs $(ROMS)
+	$(QEMU) $(QEMU_ARGS) -boot n \
+		-option-rom /usr/share/qemu/pxe-rtl8139.rom \
+		-device e1000,netdev=mynet0,mac=52:54:00:12:34:56 \
+		-netdev user,id=mynet0,net=192.168.76.0/24,dhcpstart=192.168.76.9,tftp=$(CURDIR),bootfile=pxe.bs