system tables foo

Author: phip1611

uefi/src/table/mod.rs

@@ -42,7 +42,10 @@ pub unsafe fn set_system_table(ptr: *const uefi_raw::table::system::SystemTable)
 /// [`exit_boot_services`]: SystemTable::exit_boot_services
 pub fn system_table_boot() -> Option<SystemTable<Boot>> {
     let st = SYSTEM_TABLE.load(Ordering::Acquire);
-    assert!(!st.is_null());
+
+    if st.is_null() {
+        return None;
+    }
 
     // SAFETY: the system table is valid per the requirements of `set_system_table`.
     unsafe {
@@ -62,7 +65,10 @@ pub fn system_table_boot() -> Option<SystemTable<Boot>> {
 /// Panics if the system table has not been set with [`set_system_table`].
 pub fn system_table_runtime() -> Option<SystemTable<Runtime>> {
     let st = SYSTEM_TABLE.load(Ordering::Acquire);
-    assert!(!st.is_null());
+
+    if st.is_null() {
+        return None;
+    }
 
     // SAFETY: the system table is valid per the requirements of `set_system_table`.
     unsafe {