Quectel LTE Module Series

LTE Module Series
SC20 Secure Boot User Guide
SC20_Secure_Boot_User_Guide Confidential / Released 15 / 15
7 Appendix A Reference
Table 3: Terms and Abbreviations
Abbreviation
Description
AP
Application Processor
APPSBL
Applications Boot Loader
APPS PBL
Applications Primary Boot Loader
BP
Baseband Processor
CA
Certificate Authority
HLOS
High-Level Operating System
mba
Modem Boot Authentication
PIL
Peripheral Image Loading
QFIL
Quelcomm Flash Image Loader
QSEE
Qualcomm Secure Execution Environment
RPM
Resource Power Manager
SBL
Secondary Boot Loader
TCM
Tightly Coupled Memory
TZ
Trustzone
Quectel
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