🔧 更改为使用bochs虚拟机（qemu暂时没法正常显示画面）

bochsrc

@@ -1,13 +1,13 @@
 # configuration file generated by Bochs
 plugin_ctrl: unmapped=1, biosdev=1, speaker=1, extfpuirq=1, parallel=1, serial=1, iodebug=1
 config_interface: textconfig
-display_library: sdl
+# display_library: x11
 #memory: host=2048, guest=2048
 romimage: file="/usr/local/share/bochs/BIOS-bochs-latest"
 vgaromimage: file="/usr/local/share/bochs/VGABIOS-lgpl-latest"
 boot: floppy
 floppy_bootsig_check: disabled=0
-floppya: type=1_44, 1_44="./bin/boot.img", status=inserted, write_protected=0
+floppya: type=1_44, 1_44="bin/boot.img", status=inserted, write_protected=0
 # no floppyb
 ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
 ata0-master: type=none
@@ -51,3 +51,4 @@ com4: enabled=0
 
 megs: 2048
 
+ # gdbstub: enabled=1, port=1234, text_base=0, data_base=0, bss_base=0;

bootloader/Makefile

@@ -4,7 +4,7 @@ boot.bin: boot.asm
 	nasm boot.asm -o ../bin/bootloader/boot.bin
 
 loader.bin: loader.asm
-	nasm loader.asm -o ../bin/bootloader/lodaer.bin
+	nasm loader.asm -o ../bin/bootloader/loader.bin
 
 
 clean:

kernel/main.c

@@ -1,8 +1,41 @@
 //
 // Created by longjin on 2022/1/20.
 //
+int *address = (int *)0xffff800000a00000; //帧缓存区的地址
 
+void show_color_band(int width, int height, char a, char b, char c, char d)
+{
+    /** 向帧缓冲区写入像素值
+     * @param address: 帧缓存区的地址
+     * @param val:像素值
+     */
+
+    for (int i = 0; i < width * height; ++i)
+    {
+
+        *((char *)address + 0) = d;
+        *((char *)address + 1) = c;
+        *((char *)address + 2) = b;
+        *((char *)address + 3) = a;
+        ++address;
+    }
+}
+
+//操作系统内核从这里开始执行
 void Start_Kernel(void)
 {
-    while(1);
+    
+
+    
+
+    show_color_band(1440, 20, 0x00, 0xff, 0x00, 0x00);
+
+    show_color_band(1440, 20, 0x00, 0x00, 0xff, 0x00);
+
+    show_color_band(1440, 20, 0x00, 0x00, 0x00, 0xff);
+
+    show_color_band(1440, 20, 0x00, 0xff, 0xff, 0xff);
+
+    while (1)
+        ;
 }

run_in_bochs.sh

@@ -0,0 +1,79 @@
+# ======检查是否以sudo运行=================
+uid=`id -u`
+if [ ! $uid == "0" ];then
+  echo "请以sudo权限运行"
+  exit
+fi
+
+# 第一个参数如果是--notbuild 那就不构建，直接运行
+if [ ! "$1" == "--nobuild" ]; then
+    echo "开始构建..."
+    make all
+    make clean
+fi
+
+# ==============检查文件是否齐全================
+if [ ! -x "bin/bootloader/boot.bin" ]; then
+  echo "bin/bootloader/boot.bin 不存在！"
+  exit
+fi
+if [ ! -x "bin/bootloader/loader.bin" ]; then
+  echo "bin/bootloader/loader.bin 不存在！"
+  exit
+fi
+if [ ! -x "bin/boot.img" ]; then
+  echo "bin/boot.img 不存在！"
+  exit
+fi
+# ===============文件检查完毕===================
+
+
+# =========将引导程序写入boot.img=============
+dd if=bin/bootloader/boot.bin of=bin/boot.img bs=512 count=1 conv=notrunc
+
+# =========创建临时文件夹==================
+# 判断临时文件夹是否存在，若不存在则创建新的
+if [ ! -d "tmp/" ]; then
+  mkdir tmp/
+  echo "创建了tmp文件夹"
+fi
+
+# ==============挂载boot.img=============
+  mkdir tmp/boot
+  mount bin/boot.img tmp/boot -t vfat -o loop
+
+  # 检查是否挂载成功
+  if  mountpoint -q tmp/boot
+   then
+      echo "成功挂载 boot.img 到 tmp/boot"
+      # ========把loader.bin复制到boot.img==========
+      cp bin/bootloader/loader.bin tmp/boot
+      # ========把内核程序复制到boot.img======
+      cp bin/kernel/kernel.bin tmp/boot
+      sync
+      # 卸载磁盘
+      umount tmp/boot
+  else
+    echo "挂载 boot.img 失败！"
+  fi
+
+
+
+# 运行结束后删除tmp文件夹
+rm -rf tmp
+
+# 进行启动前检查
+flag_can_run=0
+
+if [ -d "tmp/" ]; then
+  flag_can_run=0
+  echo "tmp文件夹未删除！"
+else
+  flag_can_run=1
+fi
+
+if [ $flag_can_run -eq 1 ]; then
+  bochs -f ./bochsrc -q
+else
+  echo "不满足运行条件"
+fi

run_in_qemu.sh

@@ -6,7 +6,7 @@ if [ ! $uid == "0" ];then
 fi
 
 # 第一个参数如果是--notbuild 那就不构建，直接运行
-if [ ! "$1" == "--notbuild" ]; then
+if [ ! "$1" == "--nobuild" ]; then
     echo "开始构建..."
     make all
     make clean
@@ -73,7 +73,7 @@ else
 fi
 
 if [ $flag_can_run -eq 1 ]; then
-  qemu-system-x86_64 -s -S -m 2048 -fda bin/boot.img
+  qemu-system-x86_64 -s -S -m 2048 -fda bin/boot.img  
 else
   echo "不满足运行条件"
 fi