TF-M glossary of terms and abbreviations

Term	Abbrev.	Description
TF-M related
Trusted Firmware for M-class	TF-M	ARM TF-M provides a reference implementation of secure world software for ARMv8-M.
Trusted Firmware for M-class	TFM	ARM TF-M provides a reference implementation of secure world software for ARMv8-M.
Secure Processing Environment	SPE	PSA term. In TF-M this means the secure domain protected by TF-M
Non Secure Processing Enviroment	NSPE	PSA term. In TF-M this means non secure domain typically running an OS using services provided by TF-M
Secure Service	SS	A component within the TEE that is atomic from a security/trust point of view, i.e. which is viewed as a single entity from a TF-M point of view
Secure Partition	SP	A logical container for a single secure service
Secure Partition Manager	SPM	The TF-M component responsible for enumeration, management and isolation of multiple Secure Partitions within the TEE
Secure Function	SFN	An entry function to a secure service. Multiple SFN per SS are permitted
Secure Storage Service	SST	Secure storage service provided by TF-M
SSE-200 platform
Memory Protection Controller	MPC	Bus slave-side security controller for memory regions
Peripheral Protection Controller	PPC	Bus slave-side security controller for peripheral access
v8M-specific
Secure/Non-secure	S/NS	The separation provided by TrustZone hardware components in the system
Secure Attribution Unit	SAU	Hardware component providing isolation between Secure, Non-secure Callable and Non-secure addresses
M-class Generic
ARM Architecture Procedure Call Standard	AAPCS	The AAPCS defines how subroutines can be separately written, separately compiled, and separately assembled to work together. It describes a contract between a calling routine and a called routine
SuperVisor Call	SVC	ARMv7M assembly instruction to call a privileged handler function
Memory Protection Unit	MPU	Hardware component providing privilege control