29 lines
2.0 KiB
Markdown
29 lines
2.0 KiB
Markdown
The SoC has several onboard accelerator units, this is a useful list of the names and what they refer to. Most of the accelerators run firmware that can be found in the pre-boot partition `/System/Volumes/Preboot/[UUID]/restore/Firmware`, packaged as im4p files which may be extracted with <https://github.com/19h/ftab-dump/blob/master/rkos.py> and some dd.
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*Update none of the ANE, AVE, ADT im4p's extract with that. I'm not sure which ones do. You are better off following the im4p extraction steps in [ADT](FW-ADT.md). Can we make a progress matrix regarding firmware?
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## Names
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Names can be formatted the following ways depending on their official-ness:
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* Names in quotes with a question mark like: "<name>?" are inventions/uncertain in origin.
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* Names in **bold** like: **<name>** are found in Apple official documentation.
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* Names in *italics* like: *<name>* are either common unofficial names or have uncertain but safe sources.
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### A
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* **AGX**: "Apple Graphics? Accel(x)lerator?" (via `gfx`) The internal name for Apple's GPU series.
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* **AMX**: *Apple Matrix eXtensions*. A matrix coprocessor partially integrated into the ISA.
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* **ANE**: **Apple Neural Engine** Neural network execution acceleration based on convolutions. Think of Google's TPU
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* **AOP**: **Always On Processor**. "hey siri" activation and "other sensor stuff"
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* **APR**: **APR ProRes**. Handles ProRes video encoding + decoding.
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* **AVE**: **AVE Video Encoder**. Handles video encoding. Ostensibly the A is for Apple [citation needed], but I see a recursive acronym.
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* **AVD**: **AVD Video Decoder**. Handles video decoding. ^
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### D
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* **DCP**: "Display Compression Processor?"/"Display Control Processor?". Displayport/Display control of some sort.
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### P
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* **PMP**: "Power Management Processor?". Handles power functionality
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### S
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* **SEP**: **Secure Enclave Processor**. The M1's built-in HSM/TPM/etc device. Handles Touch ID and most crypto, as well as boot policy decisions. Harmless to Linux, but we can use its features if we want to. Contrast to AP.
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