This section contains the approximate details of PMU firmware Memory Layout and also the Memory Footprint with various modules enabled.
In PMU RAM, some part is reserved for PBR leaving around 125.7 KB for PMU firmware. The following figure shows the memory layout of PMU RAM.
Figure 1. PMU Firmware Memory Layout
In PMU firmware, only PM module is enabled by default along with Base Firmware and all the other modules are disabled. See the PMU Firmware Build Flags section to know about the default setting of a module.
Note: All the metrics are with
compilation optimized for size -Os. This optimization setting is enabled by default
in the Vitis IDE. To disable the same, follow the steps mentioned in Enable/Disable Modules section.
| S.No | Feature/Component | Size Occupied (KB) | Free Space (KB) | Additional Notes | Remarks |
|---|---|---|---|---|---|
| 1 | PMU firmware without detailed debug prints enabled | 111.4 | 16.6 | This is with base PMU firmware and PM module. | |
| 2 | PMU firmware with detailed debug prints enabled | 115.4 | 12.6 | Detailed debug prints are enabled when XPFW_DEBUG_DETAILED flag is defined. | This estimation is with combination of (1) and (2) |
| 3 | PMU firmware with Error Management Module enabled | 114.4 | 13.6 | Error Management module is enabled when ENABLE_EM and ENABLE_SCHEDULER flags are defined. | This estimation is with combination of (1) and (3) |
| 4 | PMU firmware with Restart functionality enabled | 117.1 | 10.9 | Restart functionality is enabled when ENABLE_RECOVERY, ENABLE_ESCALATION and CHECK_HEALTHY_BOOT flags are defined along with EMABLE_EM and ENABLE_SCHEDULER flags. | This estimation is with combination of (1) and (4) |