Hardware Reference
In-Depth Information
Memory
This section summarizes configuration settings pertaining to memory.
Disable GPU L2 Cache
The disable_l2cache option allows the ARM CPU access to the GPU L2 cache to be
disabled. This needs the corresponding L2 disabled in the kernel.
disable_l2cache
Description
0
Enable GPU L2 cache access (default)
1
Disable GPU L2 cache access
GPU Memory (All)
The gpu_mem option allows configuration of the GPU memory for all Raspberry Pi board
revisions (unless gpu_mem_256 or gpu_mem_512 is supplied).
gpu_mem
Description
gpu_mem=64
Default is 64 MB
gpu_mem=128
128 MB
GPU Memory (256)
The gpu_mem_256 option allows configuration of the GPU memory for the 256 MB
Raspberry Pi boards. When specified, it overrides the gpu_mem option setting.
gpu_mem_256
Description
unspecified
Defined by gpu_mem option
gpu_mem_256=128
128 MB (example)
 
 
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