From 4761724dcade44a1fdbf8030b0a6896e90d7cde2 Mon Sep 17 00:00:00 2001
From: catfood <protonphantem@gmail.com>
Date: Wed, 22 Nov 2023 22:07:31 +0800
Subject: [PATCH] enable uart output

---
 Makefile        | 3 +++
 include/proto.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/Makefile b/Makefile
index 1a64f96..b89027e 100644
--- a/Makefile
+++ b/Makefile
@@ -145,11 +145,13 @@ run: $(IMAGE)
 	@qemu-system-i386		\
 	-boot order=a			\
 	-drive file=$<,format=raw	\
+	-serial stdio \
 
 gdb: $(IMAGE)
 	@qemu-system-i386		\
 	-boot order=a			\
 	-drive file=$<,format=raw	\
+	-serial stdio \
 	-s -S				\
 
 gdb-no-graphic: $(IMAGE)
@@ -157,6 +159,7 @@ gdb-no-graphic: $(IMAGE)
 	-nographic			\
 	-boot order=a			\
 	-drive file=$<,format=raw	\
+	-serial stdio \
 	-s -S				\
 
 # 调试的内核代码elf
diff --git a/include/proto.h b/include/proto.h
index 6d03253..0295714 100644
--- a/include/proto.h
+++ b/include/proto.h
@@ -12,6 +12,7 @@ int vga_get_disppos();
 void vga_write_char(const char ch, u8 color);
 void vga_write_str(const char * str);
 void vga_write_str_color(const char * str, u8 color);
+int uart_kprintf(const char *fmt, ...);
 
 //added by zcr
 void	disable_irq(int irq);