Adding support for reporting service information

Cargo.toml

@@ -25,6 +25,7 @@ shared-bus = { version = "0.2.0-alpha.1", features = ["cortex-m"] }
 usb-device = "0.2.6"
 postcard = "0.5.1"
 crc-any = { version = "2.3.5", default-features = false }
+panic-persist = { git = "https://github.com/jamesmunns/panic-persist", branch = "master", features = ["custom-panic-handler"] }
 
 [dependencies.minimq]
 git = "https://github.com/quartiq/minimq"

README.md

@@ -232,3 +232,13 @@ Bootloader USB interface.
 ```
 dfu-util -a 0 -s 0x08000000:leave --download booster.bin
 ```
+
+# Generating Releases
+
+When a release is ready, `develop` must be merged into `master`.
+
+The corresponding merge commit is then tagged with the version in the form of `vX.Y.Z`, where X, Y,
+and Z are the semantic version major, minor, and patch versions. The tag must be pushed using `git
+push origin vX.Y.Z`. This will automatically trigger CI to generate the release.
+
+After the tag is generated, `master` must be merged back into `develop`.

build.rs

@@ -0,0 +1,55 @@
+//! Booster NGFW build script
+//!
+//! # Copyright
+//! Copyright (C) 2020 QUARTIQ GmbH - All Rights Reserved
+//! Unauthorized usage, editing, or copying is strictly prohibited.
+//! Proprietary and confidential.
+//!
+//! # Note
+//! This build script is run immediately before the build is completed and is used to inject
+//! environment variables into the build.
+use std::process::Command;
+
+fn main() {
+    // Inject the git revision into an environment variable for compilation.
+    let dirty_flag = if !Command::new("git")
+        .args(&["diff", "--quiet"])
+        .status()
+        .unwrap()
+        .success()
+    {
+        "-dirty"
+    } else {
+        ""
+    };
+
+    let output = Command::new("git")
+        .args(&["rev-parse", "HEAD"])
+        .output()
+        .unwrap();
+    let revision = String::from_utf8(output.stdout).unwrap();
+    println!(
+        "cargo:rustc-env=GIT_REVISION={}{}",
+        revision.trim(),
+        dirty_flag
+    );
+
+    let output = Command::new("git")
+        .args(&["describe", "--tags"])
+        .output()
+        .unwrap();
+    let version = String::from_utf8(output.stdout).unwrap();
+    println!("cargo:rustc-env=VERSION={}", version.trim());
+
+    // Collect all of the enabled features and inject them as an environment variable.
+    let mut features: Vec<String> = Vec::new();
+    for (key, _) in std::env::vars() {
+        let strings: Vec<&str> = key.split("CARGO_FEATURE_").collect();
+        if strings.len() > 1 {
+            println!("{}", strings[1]);
+            features.push(String::from(strings[1]));
+        }
+    }
+
+    println!("cargo:rustc-env=ALL_FEATURES={}", features.join(", "));
+}

memory.x

@@ -2,9 +2,13 @@ MEMORY
 {
   /* NOTE 1 K = 1 KiBi = 1024 bytes */
   FLASH : ORIGIN = 0x08000000, LENGTH = 1M
-  RAM : ORIGIN = 0x20000000, LENGTH = 128K
+  RAM : ORIGIN = 0x20000000, LENGTH = 127K
+  PANDUMP : ORIGIN = 0x2001FC00, LENGTH = 1K
 }
 
+_panic_dump_start = ORIGIN(PANDUMP);
+_panic_dump_end = ORIGIN(PANDUMP) + LENGTH(PANDUMP);
+
 /* This is where the call stack will be allocated. */
 /* The stack is of the full descending type. */
 /* You may want to use this variable to locate the call stack and static

src/main.rs

@@ -11,6 +11,8 @@
 #[macro_use]
 extern crate log;
 
+use panic_persist as _;
+
 use core::fmt::Write;
 
 use enum_iterator::IntoEnumIterator;
@@ -477,9 +479,6 @@ const APP: () = {
         c.schedule.usb(c.start).unwrap();
         c.schedule.fans(c.start).unwrap();
 
-        // Clear the reset flags now that initialization has completed.
-        platform::clear_reset_flags();
-
         init::LateResources {
             // Note that these share a resource because they both exist on the same I2C bus.
             main_bus: MainBus { fans, channels },

src/platform.rs

@@ -13,12 +13,15 @@ use embedded_hal::{blocking::delay::DelayUs, digital::v2::OutputPin};
 pub const MAXIMUM_REFLECTED_POWER_DBM: f32 = 30.0;
 
 #[panic_handler]
-fn panic(_info: &core::panic::PanicInfo) -> ! {
+fn panic(info: &core::panic::PanicInfo) -> ! {
     cortex_m::interrupt::disable();
 
     // Shutdown all of the RF channels.
     shutdown_channels();
 
+    // Write panic info to RAM.
+    panic_persist::report_panic_info(info);
+
     // Reset the device in `release` configuration.
     #[cfg(not(debug_assertions))]
     cortex_m::peripheral::SCB::sys_reset();

src/serial_terminal.rs

@@ -57,6 +57,9 @@ enum Token {
 
     #[regex(r"[a-zA-Z0-9]+")]
     DeviceIdentifier,
+
+    #[token("service")]
+    ServiceInfo,
 }
 
 #[derive(PartialEq)]
@@ -74,6 +77,7 @@ pub enum Request {
     ResetBootloader,
     Help,
     Read(Property),
+    ServiceInfo,
     WriteIpAddress(Property, Ipv4Addr),
     WriteIdentifier(String<consts::U32>),
 }
@@ -152,6 +156,61 @@ impl SerialTerminal {
                     );
                 }
 
+                Request::ServiceInfo => {
+                    let mut msg: String<consts::U256> = String::new();
+                    write!(&mut msg, "{:<20}: {}\n", "Version", env!("VERSION")).unwrap_or_else(
+                        |_| {
+                            msg = String::from("Version: too long");
+                        },
+                    );
+                    self.write(msg.as_bytes());
+
+                    msg.clear();
+                    write!(
+                        &mut msg,
+                        "{:<20}: {}\n",
+                        "Git revision",
+                        env!("GIT_REVISION")
+                    )
+                    .unwrap_or_else(|_| {
+                        msg = String::from("Git revision: too long");
+                    });
+                    self.write(msg.as_bytes());
+
+                    msg.clear();
+                    write!(&mut msg, "{:<20}: {}\n", "Features", env!("ALL_FEATURES"))
+                        .unwrap_or_else(|_| {
+                            msg = String::from("Features: too long");
+                        });
+                    self.write(msg.as_bytes());
+
+                    msg.clear();
+                    // Note(unwrap): The msg size is long enough to always contain the provided
+                    // string.
+                    write!(&mut msg, "{:<20}: ", "Panic Info").unwrap();
+                    self.write(msg.as_bytes());
+                    self.write(
+                        panic_persist::get_panic_message_bytes().unwrap_or("None".as_bytes()),
+                    );
+                    self.write("\n".as_bytes());
+
+                    msg.clear();
+                    // Note(unwrap): The msg size is long enough to be sufficient for all possible
+                    // formats.
+                    write!(
+                        &mut msg,
+                        "{:<20}: {}\n",
+                        "Watchdog Detected",
+                        platform::watchdog_detected()
+                    )
+                    .unwrap();
+                    self.write(msg.as_bytes());
+
+                    // Reading the panic message above clears the panic message, so similarly, we
+                    // should also clear the watchdog once read.
+                    platform::clear_reset_flags();
+                }
+
                 Request::WriteIpAddress(prop, addr) => match prop {
                     Property::SelfAddress => self.settings.set_ip_address(addr),
                     Property::BrokerAddress => self.settings.set_broker(addr),
@@ -312,6 +371,7 @@ gateway, netmask]
 netmask, gateway] and <IP> must be an IP address (e.g.  192.168.1.1)
 * `write id <ID>` - Write the MQTT client ID of the device. <ID> must be 23 or less ASCII \
 characters.
+* `service` - Read the service information. Service infromation clears once read.
 ".as_bytes(),
         );
     }
@@ -335,6 +395,7 @@ characters.
             Token::Reset => Request::Reset,
             Token::Dfu => Request::ResetBootloader,
             Token::Help => Request::Help,
+            Token::ServiceInfo => Request::ServiceInfo,
             Token::Read => {
                 // Validate that there is one valid token following.
                 let property_token = lex.next().ok_or("Malformed command")?;