https://github.com/qca/open-ath9k-htc-firmware
jonsmirl wrote:Qualcom ATH9K also uses Xtensa.
https://github.com/qca/open-ath9k-htc-firmware
BTW, it looks like there are redistributable (MIT license) xtos sources in there:
https://github.com/qca/open-ath9k-htc-f ... s/src/xtos