alt Hacker NewsSo just to get this straight, Qualcomm has a piece of custom silicon, as a peripheral controlled by registers, that when enabled reroutes the ARMs USB pins through it (adding a USB hub in the middle), and on that hub it adds a SWD programmer and a serial port that connect back to the ARM core's IOs? Amazing!
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indrora • yesterday at 8:46 PM
Just wait until you find out about Apple's magical USB shenanigans like the Chimp Cable https://www.theiphonewiki.com/wiki/Chimp_Cable
This USB-based debug approach is becoming standard practice across SoC vendors (MediaTek's preloader, Apple's special cables) as it eliminates dedicated debug headers while maintaining controlled access through eFuse-gated authentication.