linux 启动logo

1：准备png图片；

2：安装netpbm

apt-get install netpbm

3：制作 ppm图片

保存一个png图片logo.png，按如下方式操作:

#pngtopnm logo.png > linuxlogo.pnm

# pnmquant 224 linuxlogo.pnm > linuxlogo224.pnm

# pnmtoplainpnm linuxlogo224.pnm > logo_linux_clut224.ppm

将logo_linux_clut224.ppm 拷贝至drivers/video/logo/目录下

4：配置内核

Device Drivers ->

Graphics Support ->

[*] Support for frame buffer devices

[*] VESA VGA graphics support

Console display driver support ->

[*] Video mode selection support

[*] Framebuffer Console support

[*]Select compiled-in fonts

[*]VGA 8x16 font

Logo configuration->

[*]Bootup logo

5：修改内核代码

修改drivers/video/fbmem.c : 471-474行

image.dx = 0;

image.dy = y;

image.width = logo->width;

image.height = logo->height;

为

//image.dx = 0;

//image.dy = y;

image.width = logo->width;

image.height = logo->height;

image.dx=(info->var.xres - image.width)/2;

image.dy=(info->var.yres - image.height)/2;

修改drivers/video/console/fbcon.c, 在582行

logo_height = fb_prepare_logo(info, ops->rotate);

后面加入

logo_height += (info->var.yres - logo_height)/2;

重新编译内核即可；

http://hi.baidu.com/steven926/blog/item/4724adfcdbd6163b5d6008b5.html