These files have not been provided by Espressif. Instead, they have been created by the Rust Embedded community, either by extracting from the ESP-IDF (licensed under the Apache 2.0 license), or manually filling in the rest that could not be extracted automatically.
- esp32.svd: copied from the file at https://github.com/esp-rs/esp32/blob/master/svd/esp32.svd
- esp8266.svd: generated using
makefrom the repo: https://github.com/esp-rs/esp8266