How Android disable JTAG via software method

Here's how:(1) Burn the efuse as follows Enable_sw_jtag_con bit.
[Security Control]
; If Enable_sw_jtag_con = 1, Enable SW control to JTAG
Enable_sw_jtag_con = 1

(2) in the alps\mediatek\custom\$ (project) \securit\chip_config\s\cfg\secre_jtag_config.ini file
Secure_jtag_enable set to FALSE, rebuild build image

Notes:

(1) The above method is not a permanent disable JTAG, if you want to re-restore the JTAG function, you can set the secure_jtag_enable true;

(2) If you want to permanently disable JTAG function, you need to set the h/w control bit bit of JTAG in eFUSE register

How Android disable JTAG via software method