feat(core): allow bootloader unlock on U5 in non-production builds

[no changelog]

core/embed/bootloader/main.c

@@ -222,7 +222,7 @@ static usb_result_t bootloader_usb_loop(const vendor_header *const vhdr,
       case MessageType_MessageType_GetFeatures:
         process_msg_GetFeatures(USB_IFACE_NUM, msg_size, buf, vhdr, hdr);
         break;
-#if defined USE_OPTIGA && !defined STM32U5
+#if defined USE_OPTIGA && ((!defined STM32U5) || !PRODUCTION)
       case MessageType_MessageType_UnlockBootloader:
         response = ui_screen_unlock_bootloader_confirm();
         if (INPUT_CANCEL == response) {

core/embed/bootloader/messages.c

@@ -837,7 +837,7 @@ void process_msg_unknown(uint8_t iface_num, uint32_t msg_size, uint8_t *buf) {
   MSG_SEND(Failure);
 }
 
-#if defined USE_OPTIGA && !defined STM32U5
+#if defined USE_OPTIGA && ((!defined STM32U5) || !PRODUCTION)
 void process_msg_UnlockBootloader(uint8_t iface_num, uint32_t msg_size,
                                   uint8_t *buf) {
   secret_erase();

core/embed/rust/src/ui/model_mercury/bootloader/mod.rs

@@ -216,11 +216,33 @@ impl UIFeaturesBootloader for ModelMercuryFeatures {
     }
 
     fn screen_unlock_bootloader_confirm() -> u32 {
-        unimplemented!();
+        let icon = Icon::new(WARNING40);
+
+        let msg = Label::centered(
+            "Are you sure you want to unlock bootloader?".into(),
+            TEXT_WIPE_NORMAL,
+        );
+        let alert = Label::centered("This action cannot be undone!".into(), TEXT_WIPE_BOLD);
+
+        let right = Button::with_text("UNLOCK".into()).styled(button_wipe_confirm());
+        let left = Button::with_text("CANCEL".into()).styled(button_wipe_cancel());
+
+        let mut frame = Confirm::new(BLD_WIPE_COLOR, left, right, ConfirmTitle::Icon(icon), msg)
+            .with_alert(alert);
+
+        run(&mut frame)
     }
 
     fn screen_unlock_bootloader_success() {
-        unimplemented!();
+        let mut frame = ResultScreen::new(
+            &RESULT_WIPE,
+            Icon::new(CHECK40),
+            "Bootloader unlocked\nsuccessfully".into(),
+            Label::centered(RECONNECT_MESSAGE.into(), RESULT_WIPE.title_style())
+                .vertically_centered(),
+            true,
+        );
+        show(&mut frame, true);
     }
 
     fn screen_menu(firmware_present: secbool) -> u32 {