Four 32-bit persistent global storage registers are available for general use. Their values are preserved after software reboot. See Global Storage Registers for more information.
The following registers are reserved.
Recommended:
Xilinx recommends that you do not use reserved
registers.
| Register | Description |
|---|---|
| PMC_GLOBAL_GLOBAL_GEN_STORAGE0, PMC_GLOBAL_GLOBAL_GEN_STORAGE1 | Contains the ROM execution time stamp. When PLM is active, it reads these two registers to obtain the execution time of ROM. Registers can be used after loading boot PDI. |
| PMC_GLOBAL_GLOBAL_GEN_STORAGE2 | Contains device security status, updated by ROM. PLM uses this register to determine if KAT needs to be performed. |
| PMC_GLOBAL_GLOBAL_GEN_STORAGE4 | Used by PLM to store the TF-A handoff parameter address pointer. |
| PMC_GLOBAL_PERS_GLOB_GEN_STORAGE0 | Reserved for XilPM to save the status of each power domain initialization. |
| PMC_GLOBAL_PERS_GLOB_GEN_STORAGE1 | Not yet used in PLM but intended for data sharing between PLM and debugger. |