Add missing feature documentation for embassy-boot

2 files changed, 17 insertions, 1 deletions

diff --git a/embassy-boot/Cargo.toml b/embassy-boot/Cargo.toml
index 8c5c1f633..754c6e5f1 100644
--- a/embassy-boot/Cargo.toml
+++ b/embassy-boot/Cargo.toml
@@ -26,6 +26,7 @@ features = ["defmt"]
 [dependencies]
 defmt = { version = "1.0.1", optional = true }
 digest = "0.10"
+document-features = "0.2.7"
 log = { version = "0.4", optional = true }
 ed25519-dalek = { version = "2", default-features = false, features = ["digest"], optional = true }
 embassy-embedded-hal = { version = "0.5.0", path = "../embassy-embedded-hal" }
@@ -45,11 +46,22 @@ critical-section = { version = "1.1.1", features = ["std"] }
 ed25519-dalek = { version = "2", default-features = false, features = ["std", "rand_core", "digest"]  }
 
 [features]
+## Use [`defmt`](https://docs.rs/defmt/latest/defmt/) for logging
 defmt = ["dep:defmt"]
+## Use log for logging
 log = ["dep:log"]
+
+## Enable for devices that set erased flash bytes to `0x00` instead of the usual `0xFF`
+flash-erase-zero = []
+
+#! ## Firmware Signing
+#! Enable one of these features to allow verification of DFU signatures with
+#! `FirmwareUpdater::verify_and_mark_updated`.
+
+## Use the `ed25519-dalek` package to verify DFU signatures.
 ed25519-dalek = ["dep:ed25519-dalek", "_verify"]
+## Use the `salty` package to verify DFU signatures.
 ed25519-salty = ["dep:salty", "_verify"]
-flash-erase-zero = []
 
 #Internal features
 _verify = []
diff --git a/embassy-boot/src/lib.rs b/embassy-boot/src/lib.rs
index 7dc811f66..3e61d6036 100644
--- a/embassy-boot/src/lib.rs
+++ b/embassy-boot/src/lib.rs
@@ -3,6 +3,10 @@
 #![allow(unsafe_op_in_unsafe_fn)]
 #![warn(missing_docs)]
 #![doc = include_str!("../README.md")]
+
+//! ## Feature flags
+#![doc = document_features::document_features!(feature_label = r#"<span class="stab portability"><code>{feature}</code></span>"#)]
+
 mod fmt;
 
 mod boot_loader;