(www.linaro.org)

242 points denysvitali | 1 comments | 30 Jun 25 18:34 UTC | HN request time: 0.514s | source

Show context

dazhbog ◴[30 Jun 25 20:28 UTC] No.44427489[source]▶

So 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!

replies(2): >>44427681 #>>44429958 #

1. indrora ◴[30 Jun 25 20:46 UTC] No.44427681[source]▶

>>44427489 #

Just wait until you find out about Apple's magical USB shenanigans like the Chimp Cable https://www.theiphonewiki.com/wiki/Chimp_Cable

↑

The hidden JTAG in a Qualcomm/Snapdragon device’s USB port