first commit

2026-02-26 00:06:36 +01:00
commit 115b4c88a1
16 changed files with 750 additions and 0 deletions
--- a/27
+++ b/27
@@ -0,0 +1,27 @@
+build: prepare copygrub
+	nasm -felf32 src/bootload/boot.asm -o build/boot.o	# entrypoint for grub
+
+	gcc -c src/kernel/entry.c -o build/kernel.o -ffreestanding -O2 -Wall -Wextra -m32 # kernel
+	gcc -c src/kernel/registrar.c -o build/registrar.o -ffreestanding -O2 -Wall -Wextra -m32 # registrar
+	
+	gcc -c initrd/vga/main.c -o build/initrddir/vga_graph -ffreestanding -O2 -Wall -Wextra -m32 # initrd/vga driver
+
+	tar -czf build/initrd build/initrddir/* # build initrd
+
+	gcc -m32 -T linker.ld -o build/linked -ffreestanding -O2 -nostdlib build/boot.o build/kernel.o build/registrar.o -fno-pie -fno-pic -no-pie # link
+
+	cp build/linked build/grub/boot/kernel # copy kernel over to grub template
+	cp build/initrd build/grub/boot/JPOS.initrd # copy initrd to grub template
+
+	grub-mkrescue /usr/lib/grub/i386-pc -o build/live.iso build/grub # create final image
+test: build
+	qemu-system-i386 \
+		-boot d \
+		-cdrom build/live.iso	
+copygrub:
+	cp grubtemplate -r build/grub
+prepare: clean
+	mkdir build
+	mkdir build/initrddir
+clean:
+	-rm -rf build