diff --git a/rialto/src/main.rs b/rialto/src/main.rs
index 5e693c8..e7b6386 100644
--- a/rialto/src/main.rs
+++ b/rialto/src/main.rs
@@ -104,8 +104,8 @@
             error!("Failed to initialize dynamically shared pool.");
             e
         })?;
-    } else {
-        let range = SwiotlbInfo::new_from_fdt(fdt)?.fixed_range().ok_or_else(|| {
+    } else if let Ok(swiotlb_info) = SwiotlbInfo::new_from_fdt(fdt) {
+        let range = swiotlb_info.fixed_range().ok_or_else(|| {
             error!("Pre-shared pool range not specified in swiotlb node");
             Error::from(FdtError::BadValue)
         })?;
@@ -113,6 +113,12 @@
             error!("Failed to initialize pre-shared pool.");
             e
         })?;
+    } else {
+        info!("No MEM_SHARE capability detected or swiotlb found: allocating buffers from heap.");
+        MEMORY.lock().as_mut().unwrap().init_heap_shared_pool().map_err(|e| {
+            error!("Failed to initialize heap-based pseudo-shared pool.");
+            e
+        })?;
     }
 
     let pci_info = PciInfo::from_fdt(fdt)?;