Arm: Secure software guidelines
doc
Arm: Secure software guidelines
secure & non-secure 状态切换
SG: secure gateway. 从non-secure到secure
BXNS: branch with exchange to non-secure state. secure software 可以 branch/return non-secure program
BLXNS: branch with link and exchange to non-secure state. secure software 调用 non-secure function
Data validation and prevention of information leakage
Memory Protection Unit (MPU) is banked between the security states
