内存分配有三种模式可选。 如果用不着XBMC,开机的时候
sudo cp /boot/arm128_start.elf /boot/start.elf 就行了
这时候内存:显存的分配为 224:32
参见
http://elinux.org/R-Pi_Troublesh ... .2FGPU_memory_split
Choosing the right ARM/GPU memory split
There is a choice of how the 256M of RAM is divided between the ARM and GPU:
arm224_start.elf : 224M ARM, 32M GPU split : Maximum ARM memory. Good for ARM desktop use. No accelerated video or 3D possible.
arm192_start.elf : 192M ARM, 64M GPU split : Reasonable ARM memory. Simple video (omxplayer) or 3D (quake) is possible. This is the default.
arm128_start.elf : 128M ARM, 128M GPU split : Use this for heavy 3D work, or 3D plus video. Needed for XBMC.