5.2 Firmware Volumes
Stage III finalizes silicon and prepares DXE/BDS services. Additional firmware volumes include:
Name |
Content |
Compressed |
Parent FV |
|---|---|---|---|
| FvUefiBoot | Common DXE/BDS Services | Yes | None |
Table 27 Stage III Firmware Volumes
Which yields this example extension of the flash map for MMIO storage (add to Stage I + II map):
Binary |
FV |
Components |
Purpose |
|---|---|---|---|
| Stage III | FvUefiBoot.fv | DxeCore.efi | DXE services and dispatcher |
| PcdDxe.efi | Provides PCD services | ||
| ReportStatusCodeRouterDxe.efi | Provides status code infrastructure | ||
| StatusCodeHandlerRuntimeDxe.efi | Provides status code listeners | ||
| BdsDxe.efi | Provides Boot Device Selection phase | ||
| CpuDxe.efi | Provides processor services | ||
| Metronome.efi | Provides metronome HW abstraction | ||
| MonotonicCounterRuntimeDxe.efi | Provides monotonic counter service | ||
| PcatRealTimeClockRuntimeDxe.efi | Provides RTC abstraction | ||
| WatchdogTimer.efi | Provides watchdog timer service | ||
| RuntimeDxe.efi | Provides UEFI runtime service functionality | ||
| HpetTimerDxe.efi | Provide timer service | ||
| EmuVariableRuntimeDxe.efi | Provides UEFI variable service | ||
| CapsuleRuntimeDxe.efi | Provides capsule service | ||
| PciBusDxe.efi | PCI bus driver | ||
| GraphicsOutputDxe.efi | Provides graphics support | ||
| TerminalDxe.efi | Provides terminal services | ||
| GraphicsConsoleDxe.efi | Provides graphics console | ||
| ConSplitterDxe.efi | Provides multi console support | ||
| EnglishDxe.efi | Provides Unicode collation services | ||
| GenericMemoryTestDxe.efi | Provide memory test | ||
| DevicePathDxe.efi | Provides device path services | ||
| DiskIo.efi | Provides disk IO services | ||
| Partition.efi | Provides disk partition services | ||
| Fat.efi | Provides FAT filesystem services | ||
| Additional Components | Additional post-memory components required for Stage III boot |
Table 28 Stage III FV and Component Layout
See Appendix: Full FV Map for a more complete example Firmware Volume layout.