体系环境：ubuntu 10.04 +x86
$ sudo apt-get install netpbm
$ pngtopnm loongson.png > loongson.pnm
阐明：用来转化的图片有必要为 png 格局，不然会有如下提示：
pngtopnm: input file not a PNG file
$ pnmquant 224 loongson.pnm > loongson224.pnm
pnmcolormap: making histogram…
pnmcolormap: 5854 colors found
pnmcolormap: choosing 224 colors…
pnmremap: 222 colors found in colormap
留意：此处 pnmquant 有必要输出到另一个不同名的文件，不然会呈现如下过错提示
eg:$ pnmquant 224 loongson.pnm > loongson.pnm
pnmcolormap: EOF / read error reading magic number
pnmcolormap failed, rc=256
$ pnmtoplainpnm loongson224.pnm > loongson224.ppm
然后用转化好的 loongson224.ppm 替换 kernel
/drivers/video/logo/logo_linux_clut224.ppm(最好先做好备份)
,然后删去同一目
录下的 logo_linux_clut224.c 文件，从头编译内核即可
$ cd /home/work/kenrel/linux26_3210/drivers/video/logo
$ mv logo_linux_clut224.ppm{,-bk}
$ cp /home/loongson/Dowload/loongson224.ppm ./
$ mv loongson224.ppm logo_linux_clut224.ppm
$ rm logo_linux_clut224.c
$ cd ///
$ make menuconfig //在内核里边选上logo 支撑
Device Drivers —>
[*] Graphics support —>
[*] Bootup logo —>
[*] Standard black and white Linux logo
[*] Standard 16-color Linux logo
[*] Standard 224-color Linux logo
$ make
