# References

Source: [https://docs.qualcomm.com/doc/80-70015-12/topic/references.html](https://docs.qualcomm.com/doc/80-70015-12/topic/references.html)

## Related documents

Source: [https://docs.qualcomm.com/doc/80-70015-12/topic/references.html](https://docs.qualcomm.com/doc/80-70015-12/topic/references.html)

| Title | Number |
| --- | --- |
| **Qualcomm Technologies,                                Inc.** | **Qualcomm Technologies,                                Inc.** |
| [Qualcomm Linux Security<br>                                    Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-11) | 80-70015-11 |
| [Qualcomm Linux Boot<br>                                Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-4) | 80-70015-4 |
| [Qualcomm Linux Kernel<br>                                    Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-3) | 80-70015-3 |
| [Qualcomm Linux Yocto<br>                                Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-27/intro_yocto_linux_qualcomm.html) | 80-70015-27 |
| **Resources** | **Resources** |
| [Qualcomm® Package Manager 3<br>                                    Documentation](https://qpm.qualcomm.com/assets/userguide/external/book/0.UserGuide/UserGuide.html) | [Qualcomm® Package Manager 3<br>                                    Documentation](https://qpm.qualcomm.com/assets/userguide/external/book/0.UserGuide/UserGuide.html) |
| [Arm System Memory Management Unit<br>                                    Architecture Specification, IHI0062D](https://developer.arm.com/documentation/ihi0062/dc) | [Arm System Memory Management Unit<br>                                    Architecture Specification, IHI0062D](https://developer.arm.com/documentation/ihi0062/dc) |
| [https://docs.kernel.org/trace/coresight/coresight-perf.html](https://docs.kernel.org/trace/coresight/coresight-perf.html) | [https://docs.kernel.org/trace/coresight/coresight-perf.html](https://docs.kernel.org/trace/coresight/coresight-perf.html) |
| [https://docs.kernel.org/trace/coresight/index.html](https://docs.kernel.org/trace/coresight/index.html) | [https://docs.kernel.org/trace/coresight/index.html](https://docs.kernel.org/trace/coresight/index.html) |
| [https://perf.wiki.kernel.org/index.php/Tutorial](https://perf.wiki.kernel.org/index.php/Tutorial) | [https://perf.wiki.kernel.org/index.php/Tutorial](https://perf.wiki.kernel.org/index.php/Tutorial) |
| [https://man7.org/linux/man-pages/man1/ltrace.1.html](https://man7.org/linux/man-pages/man1/ltrace.1.html) | [https://man7.org/linux/man-pages/man1/ltrace.1.html](https://man7.org/linux/man-pages/man1/ltrace.1.html) |
| [https://man7.org/linux/man-pages/man1/gdb.1.html](https://man7.org/linux/man-pages/man1/gdb.1.html) | [https://man7.org/linux/man-pages/man1/gdb.1.html](https://man7.org/linux/man-pages/man1/gdb.1.html) |
| [https://man7.org/linux/man-pages/man5/core.5.html](https://man7.org/linux/man-pages/man5/core.5.html) | [https://man7.org/linux/man-pages/man5/core.5.html](https://man7.org/linux/man-pages/man5/core.5.html) |
| [https://man7.org/linux/man-pages/man1/gdbserver.1.html](https://man7.org/linux/man-pages/man1/gdbserver.1.html) | [https://man7.org/linux/man-pages/man1/gdbserver.1.html](https://man7.org/linux/man-pages/man1/gdbserver.1.html) |
| [https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-system-cpu](https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-system-cpu) | [https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-system-cpu](https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-system-cpu) |
| [https://man7.org/linux/man-pages/man8/crash.8.html](https://man7.org/linux/man-pages/man8/crash.8.html) | [https://man7.org/linux/man-pages/man8/crash.8.html](https://man7.org/linux/man-pages/man8/crash.8.html) |

## Acronyms and terms

Source: [https://docs.qualcomm.com/doc/80-70015-12/topic/references.html](https://docs.qualcomm.com/doc/80-70015-12/topic/references.html)

| Acronym or term | Definition |
| --- | --- |
| aDSP | Application digital signal processor |
| AHB | Advanced High-performance Bus |
| AOP | Always-on-processor |
| APSS | Application processor subsystem |
| cDSP | Compute DSP |
| CMA | Contiguous memory allocator |
| CNoC | Config network-on-chip |
| DCC | Data capture and compare |
| DDR | Double data rate |
| FAR | Fault address register |
| FIQ | Fast interrupt request |
| FSR | Fault status register |
| GDB | GNU debugger |
| GFP | Get free pages |
| HLOS | High-level OS |
| KASLR | Kernel address space layout randomization |
| LPASS | Low-power audio subsystem |
| NoC | Network-on-chip<br>It is a bus connecting subsystems on the SoC. There<br>                                are various types of NoCs such as System NoC (SNoC), Config NoC<br>                                (CNoC), Multimedia NoC (MMNoC). |
| PCB | Printed circuit board |
| PMIC | Power management IC<br>PMIC is the power supply block of the<br>                                chipset. |
| PS\_HOLD | Power-supply hold signal line from the SoC to the PMIC |
| QCAP | Qualcomm crash analysis portal |
| SNoC | System network-on-chip |
| SPM | Subsystem power manager |
| SMMU | System memory management unit |
| SS | Subsystem |
| TRACE32 | Lauterbach TRACE32 software |
| TBU | Translation buffer unit. Arm^®^ SMMU IP component. |
| TCM | Tightly coupled memory |
| TEE | Trusted execution environment |
| TSENS | Temperature sensor<br>This sensor captures the junction temperature of<br>                                the chipset. |
| TZ | TrustZone |
| WD | Watchdog <br>A watchdog is a fixed-length counter that enables a<br>                                system to recover from an unexpected hardware or software<br>                                catastrophe. |
| WD Bark | Watchdog timeout that results in a bark interrupt and a kernel<br>                            panic. |
| WB Bite | Watchdog timeout that occurs if a watchdog is not petted even after<br>                            WD Bark, resulting in a bite interrupt in secure mode. This issue<br>                            further leads to a system reset. |
| WPSS | Wireless local area network processor subsystem |
| XBL | eXtensible Boot Loader |
| xPU | External protection unit<br>It is a module in the Qualcomm TEE and is<br>                                meant for protecting memory regions, addresses, and<br>                            registers. |

Last Published: Oct 14, 2024

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