I was working on making a custom recovery and things got sticky for a bit.
So I went looking for the UART.
It turns out, there are two missing zero ohm resistors.
You can bypass them, but you'll need a bit of wire in the solder blob.
The three larger dots on the left give you a connection point.
Be careful as those pads can rip off easily.
The signals are all 1.8V logic level, so make sure your USB UART handles that.
This only provides data before the system or recovery loads.
As far as what I was actually working on: I've got recovery working in SELinux permissive, with no authorization ADB, but I still have to root the ADB.
And yes, Secure Boot is verified to be off:
Code:
Format: Log Type - Time(microsec) - Message - Optional Info
Log Type: B - Since Boot(Power On Reset), D - Delta, S - Statistic
S - QC_IMAGE_VERSION_STRING=BOOT.XF.4.1-00297-KAMORTALAZ-1
S - IMAGE_VARIANT_STRING=AgattiPkgLAA
S - OEM_IMAGE_VERSION_STRING=huanggq-vm-1404
S - Boot Interface: eMMC
S - Secure Boot: Off