Re:What Happens When a CPU Starts
by trissylegs on Wednesday January 11, 2023 @03:27AM
(#34336349)
I think OpenPower has a fully open bootloader. But it's not exactly cheap to try.
Those systems startup into "Cache Contained" mode. Where the Boot ROM is copied to CPU Cache and there's no main memory yet. The code in the ROM has to initialized main memory before it can use it.
Those systems startup into "Cache Contained" mode. Where the Boot ROM is copied to CPU Cache and there's no main memory yet. The code in the ROM has to initialized main memory before it can use it.