On 08/11/2022 19:04, Shao Miller wrote:
On 2022-11-08 10:45, Shao Miller wrote:On 2022-11-08 10:39, Nick Hudson wrote:[...] Do you need to access these special memory regions during early boot because both method above are aimed at this use case. [...]To answer the question: yes: 1. Framebuffer region
The memory for this is handled here: https://nxr.netbsd.org/xref/src/sys/arch/evbarm/fdt/fdt_machdep.c#260
2. Magical control area, such as for clock and reboots
Your platform DEVMAP might have to contain some / all of this depending on what's needed before configure runs.
Nick