The global registers serve several purposes.
- Triple module redundant MicroBlaze™ processor controls, QoS for PPU on AXI
- Storage registers (regular and persistent) and error storage for PLM firmware
- Multiboot control
- Mutex registers for processor software
- Isolation and power supply storage
- Power, isolation, reset, wake-up, and PL interrupt registers
- DONE signal control, reset controls
- Error management, firmware error storage registers
- System error registers for PMC EAM
- System interrupt registers
- Soft error mitigation (SEM) in the PL configuration RAM (CRAM)
The platform service request registers allow system software to make power-up, power-down, isolation, and software reset requests by setting bits in the trigger registers.
The PMC global register set is accessed via a 32-bit APB programming interface that can be accessed by any permitted processor.