soft_panic: log error message

src/runtime/src/panic.rs

@@ -6,6 +6,7 @@ use unwind::backtrace;
 #[cfg(feature = "target_kasli_soc")]
 use libboard_zynq::error_led::ErrorLED;
 use crate::comms::soft_panic_main;
+use log::error;
 use libboard_zynq::timer::GlobalTimer;
 use libconfig::Config;
 
@@ -15,15 +16,8 @@ static mut SOFT_PANICKED: bool = false;
 #[panic_handler]
 fn panic(info: &core::panic::PanicInfo) -> ! {
     let id = MPIDR.read().cpu_id() as usize;
-    print!("Core {} ", id);
-    #[cfg(feature = "target_kasli_soc")]
-    {
-        let mut err_led = ErrorLED::error_led();
-        err_led.toggle(true);
-    }
     let soft_panicked = unsafe { SOFT_PANICKED };
-
-    print!("panic at ");
+    print!("Core {} panic at ", id);
     if let Some(location) = info.location() {
         print!("{}:{}:{}", location.file(), location.line(), location.column());
     } else {
@@ -35,6 +29,7 @@ fn panic(info: &core::panic::PanicInfo) -> ! {
         println!("");
     }
     unsafe {
+        // soft panics only allowed for core 0
         if PANICKED[id] && (SOFT_PANICKED || id == 1) {
             println!("nested panic!");
             loop {}
@@ -42,9 +37,13 @@ fn panic(info: &core::panic::PanicInfo) -> ! {
         SOFT_PANICKED = true;
         PANICKED[id] = true;
     }
-
     if !soft_panicked && id == 0 {
-        soft_panic();
+        soft_panic(info);
+    }
+    #[cfg(feature = "target_kasli_soc")]
+    {
+        let mut err_led = ErrorLED::error_led();
+        err_led.toggle(true);
     }
     println!("Backtrace: ");
     let _ = backtrace(|ip| {
@@ -56,8 +55,16 @@ fn panic(info: &core::panic::PanicInfo) -> ! {
     loop {}
 }
 
-fn soft_panic() -> ! {
-    
+fn soft_panic(info: &core::panic::PanicInfo) -> ! {
+    // log panic info to log (prints not visible in coremgmt logs)
+    if let Some(location) = info.location() {
+        error!("panic at {}:{}:{}", location.file(), location.line(), location.column());
+    } else {
+        error!("panic at unknown location");
+    }
+    if let Some(message) = info.message() {
+        error!("panic message: {}", message);
+    }
     let timer = GlobalTimer::start();
     let cfg = match Config::new() {
         Ok(cfg) => cfg,