mb/qemu-i440fx/memmap: Add warning when falling back to CMOS infos

Change-Id: Iefac6fd45791cf6a051450b41046f7e7ebc1dc41
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43446
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/emulation/qemu-i440fx/memmap.c

@@ -3,6 +3,7 @@
 #include <cbmem.h>
 #include <arch/io.h>
 #include <arch/romstage.h>
+#include <console/console.h>
 #include "memory.h"
 #include "fw_cfg.h"
 
@@ -44,8 +45,10 @@ void *cbmem_top_chipset(void)
 	uintptr_t top = 0;
 
 	top = fw_cfg_tolud();
-	if (!top)
+	if (!top) {
+		printk(BIOS_WARNING, "QEMU: Falling back to RAM info in CMOS\n");
 		top = (uintptr_t)qemu_get_memory_size() * 1024;
+	}
 
 	return (void *)top;
 }