temp stage

os/Makefile

@@ -105,6 +105,18 @@ fdt:
 	@qemu-system-riscv64 -M 128m -machine virt,dumpdtb=virt.out
 	fdtdump virt.out
 
+debug-none: build
+	@tmux new-session -d \
+		"qemu-system-riscv64 -machine virt -nographic -bios none -kernel $(KERNEL_ELF) \
+		-drive file=$(FS_IMG),if=none,format=raw,id=x0 \
+        -device virtio-blk-device,drive=x0 \
+		-device virtio-keyboard-device  \
+		-device virtio-mouse-device \
+		-serial stdio \		
+		 -s -S" && \
+		tmux split-window -h "riscv64-unknown-elf-gdb -ex 'file $(KERNEL_ELF)' -ex 'set arch riscv:rv64' -ex 'target remote localhost:1234'" && \
+		tmux -2 attach-session -d
+
 debug: build
 	@tmux new-session -d \
 		"qemu-system-riscv64 -machine virt -nographic -bios $(BOOTLOADER) -device loader,file=$(KERNEL_BIN),addr=$(KERNEL_ENTRY_PA) -s -S" && \