3 ms·
On Qualcomm SoCs, a chunk of the memory area is reserved for the baseband, and another section is reserved for TrustZone kernel, but it does the same as an inte
by biktor_gj 8y ago
On Qualcomm SoCs, a chunk of the memory area is reserved for the baseband, and another section is reserved for TrustZone kernel, but it does the same as an integrated GPU in a PC. Then it connects via a pseudo tty with a kernel driver, but as the baseband has more privilleges than the main cpu, it really could do whatever it wants, just like TrustZone.