# References

Source: [https://docs.qualcomm.com/doc/80-70014-4/topic/references.html](https://docs.qualcomm.com/doc/80-70014-4/topic/references.html)

**Related documents:**

| **Title** | **Document number** |
| --- | --- |
| **Document** | **Document** |
| *[Qualcomm Linux Build                                        Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-254/introduction.html)* | 80-70015-254 |
| *[Dev Kit User                                Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-251/introduction.html)* | 80-70015-251 |
| *[Qualcomm Linux Security                                        Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-11/overview.html)* | 80-70015-11 |
| **Resources** | **Resources** |
| TianocoreEDK2 open-source implementation | [https://github.com/tianocore/tianocore.github.io/wiki/EDK-II/](https://github.com/tianocore/tianocore.github.io/wiki/EDK-II/) |
| systemd-boot | [https://www.freedesktop.org/software/systemd/man/latest/systemd-boot.html](https://www.freedesktop.org/software/systemd/man/latest/systemd-boot.html) |
| EFI boot stub | [https://docs.kernel.org/admin-guide/efi-stub.html](https://docs.kernel.org/admin-guide/efi-stub.html) |
| UEFI specification – DXE phase | [https://uefi.org/specs/PI/1.8/V2_Overview.html](https://uefi.org/specs/PI/1.8/V2_Overview.html) |
| Qualcomm package manager (QPM) | [https://qpm.qualcomm.com/#/main/tools/details/QPM3](https://qpm.qualcomm.com/#/main/tools/details/QPM3) |

Table : Acronyms

| **Acronym** | **Definition** |
| --- | --- |
| AOP | Always-on processor |
| APPS | Applications |
| cDSP | Compute DSP |
| CDT | Configuration data table |
| CLK | Clock |
| CPUCP | CPU subsystem control processor |
| DDR | Double data rate |
| DEVCFG | Device configuration |
| DSC | Description |
| DT | Device Tree |
| DXE | Driver execution environment |
| EDL | Emergency download |
| EFI | Extensible firmware interface |
| ESP | EFI system partition |
| FDF | Forms data format |
| GPIO | General-purpose input/output |
| IMEM | Internal memory |
| Initrd | Initial RAM disk |
| ISP | Image signal processor |
| LPASS | Low-power audio subsystem |
| MMU | Memory management unit |
| NPU | Neural processing unit |
| NSP | Neural signal processor |
| PBL | Primary boot loader |
| PCAT | Product configuration assistant tool |
| PCD | Platform configuration database |
| PMIC | Power management integrated circuit |
| QDTE | Qualcomm Device Tree editor |
| QSC | Qualcomm Software Center |
| Qualcomm TEE | Qualcomm® Trusted Execution Environment (TEE) |
| RoT | Root of trust |
| TZ | TrustZone |
| UART | Universal asynchronous receiver/transmitter |
| UEFI | Unified extensible Firmware interface |
| UFS | Universal flash storage |
| XBL | eXtensible Boot Loader, referred as secondary boot loader (SBL) and<br>                            SBL1 occasionally in this guide |
| XBL\_CFG | XBL configuration |
| XBOOTLDR | Extended Boot Loader partition |
| xPU | eXternal protection unit |

Last Published: Feb 02, 2026

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