Security Termsο
Note
When describing system security, the security terminology introduced in this section will be used directly!
Termsο
Related predicates and abbreviations:
S
- Security world, which means the security world. It is a concept related to TrustZone.
NS
- Non-Security world, indicating a non-secure world. It is a concept related to TrustZone.
S/NS Aware
- specifically refers to devices that can perform security control based on S/NS signals.
P
- Privilege, indicating that M33 is running at the privileged level.
NP
- Non-Privilege, indicating that M33 is running at the non-privileged level.
M33
- ARM Cortex-M33 processor.
TZ
- TrustZone, a security mechanism introduced in M33, which isolates the CPU core into S/NS through TZ.
PPC
- Peripheral Protection Control, BK7236 peripheral security attribute configuration and controller.
MPC
- Memory Protection Control, BK7236 block storage security attribute configuration and controller.
BL1
- specifically refers to the BootROM solidified in the chip.
BL2
- Bootloader, specifically MCUBOOT in BK7236.
LCS
- Life Cycle State.