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The Pinephones modem is interesting, as it actually has it's own Android OS that is stacked on top of Qualcomm's OS (I want to call it "Hexagon"? But I don't th

by kop316 5y ago

The Pinephones modem is interesting, as it actually has it's own Android OS that is stacked on top of Qualcomm's OS (I want to call it "Hexagon"? But I don't think that's right). The folks that are freeing the Pinephone modem are focusing on the Android OS, not the underlying firmware. The project is here: https://github.com/Biktorgj/pinephone_modem_sdk/ https://github.com/Biktorgj/pinephone_modem_sdk/

megous 5y ago
Code for the large parts of the modem's OS running on the hexagon DSP cores are available on github, if you search long enough. A few mil. lines of code. Not everything though.
- newhouseb 5y ago
  This is surprising, is this intentional? If so, what would one search for?
  - kop316 5y ago
    I'm a bit surprised too, as I assumed that is VERY proprietary.
  - megous 5y ago
    Search for unique enough symbol names from the firmware blob.
comex 5y ago
Hexagon is the architecture of the DSP cores included in the modem, running in parallel with the ARM cores that run Linux/Android. https://en.wikipedia.org/wiki/Qualcomm_Hexagon https://en.wikipedia.org/wiki/Qualcomm_Hexagon