BCM2835的资料不全,不过透露端倪:
The split between ARM and GPU memory is selected by installing one of the supplied
start*.elf files as start.elf in the FAT32 boot partition of the SD card. The minimum amount
of memory which can be given to the GPU is 32MB, but that will restrict the multimedia
performance; for example, 32MB does not provide enough buffering for the GPU to do
1080p30 video decoding.
我检查了启动文件,确实找到了.elf问题。FAT32格式不知道是不是唯一支持的格式。