diff --git a/src/soc/intel/xeon_sp/chip_common.c b/src/soc/intel/xeon_sp/chip_common.c
index 0cddec1..a5062fc 100644
--- a/src/soc/intel/xeon_sp/chip_common.c
+++ b/src/soc/intel/xeon_sp/chip_common.c
@@ -403,9 +403,16 @@
 
 static uint8_t is_pci64bit_alloc(void)
 {
+/*
+ * For SPR-SP FSP which supports SOC_INTEL_PCIE_64BITS_ALLOC,
+ * Pci64BitResourceAllocation field does not exist in IIO_UDS HOB.
+ */
+#if CONFIG(SOC_INTEL_PCIE_64BIT_ALLOC)
+	return 1;
+#else
 	const IIO_UDS *hob = get_iio_uds();
-
 	return hob->PlatformData.Pci64BitResourceAllocation;
+#endif
 }
 
 static void xeonsp_pci_domain_read_resources(struct device *dev)