static struct efivars generic_efivars;
static struct efivar_operations generic_ops;
+static bool generic_ops_supported(void)
+{
+ unsigned long name_size;
+ efi_status_t status;
+ efi_char16_t name;
+ efi_guid_t guid;
+
+ name_size = sizeof(name);
+
+ status = efi.get_next_variable(&name_size, &name, &guid);
+ if (status == EFI_UNSUPPORTED)
+ return false;
+
+ return true;
+}
+
static int generic_ops_register(void)
{
+ if (!generic_ops_supported())
+ return 0;
+
generic_ops.get_variable = efi.get_variable;
generic_ops.get_next_variable = efi.get_next_variable;
generic_ops.query_variable_store = efi_query_variable_store;
static void generic_ops_unregister(void)
{
+ if (!generic_ops.get_variable)
+ return;
+
efivars_unregister(&generic_efivars);
}