3 ms·
I wonder whether the power button really directly starts the CPU. I wouldn't be surprised if the Intel Management Engine (or AMD equivalent), a CPU that's runni
by gblargg 1y ago
I wonder whether the power button really directly starts the CPU. I wouldn't be surprised if the Intel Management Engine (or AMD equivalent), a CPU that's running all the time, is what gets the power button signal and starts the CPU.
- panny 1y agoI think that is the job of the embedded controller, which is before the bootloader bringing up CPU. On Chromebooks, that part is open source along with the coreboot bootloader. https://chromium.googlesource.com/chromiumos/platform/ec/+/HEAD/docs/zephyr/README.md https://chromium.googlesource.com/chromiumos/platform/ec/+/H...