一、准备合适的logo图片（比如 logo.png），进入Linux主线目录下，下载netpbm，由其制作成ppm文件
#cd <your_linux_dir>
#sudo apt-get install netpbm
#pngtopnm logo.png > logo_linux_clut2240.pnm
#pnmquant 224 logo_linux_clut2240.pnm > logo_linux_clut2241.pnm
#pnmtoplainpnm logo_linux_clut2241.pnm > logo_linux_clut224.ppm
二、 将生成的ppm文件替换驱动目录下的同名开机logo文件
#cp -a logo_linux_clut224.ppm drivers/video/logo/logo_linux_clut224.ppm
如logo尺寸较小，想要设置在屏幕居中显示：
A、修改drivers/video/fbmem.c中两行代码为如下：
image.dx = info->var.xres/2 - image.width/2; //image.dx=0;
image.dy = info->var.yres/2 - image.height/2; //image.dy=y;
B、修改driver/video/console/fbcon.c中fbcon_prepare_logo()函数中代码为如下：
logo_height = fb_preapare_logo(info, ops->rotate) + info->var.yres/2 - logo_height/2; //logo_height = fb_preapare_logo(info, ops->rotate);
三、修改内核配置参数
#make ARCH=arm menuconfig
使能 Device Drivers/Graphics support/Boot logo/Stardard 224-color Linux logo
使能 Device Drivers/Graphics support/Console display driver support/Framebuffer Console support
；保存退出
四、重新编译内核，假设编译链为arm-linux-gnueabi-gcc
#make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-
原文：https://www.cnblogs.com/asa-ben-clc/p/14831106.html