+#if CONFIG_IS_ENABLED(EFI_LOADER)
+ if (gd->bd->bi_dram[1].start) {
+ /*
+ * Only bank 0 is below board_get_usable_ram_top(), so all of
+ * bank 1 is not mapped by the U-Boot MMU configuration, and so
+ * we must prevent EFI from using it.
+ */
+ efi_add_memory_map(gd->bd->bi_dram[1].start,
+ gd->bd->bi_dram[1].size >> EFI_PAGE_SHIFT,
+ EFI_BOOT_SERVICES_DATA, false);
+ }
+#endif
+