diff --git a/tools/firmware/hvmloader/config.h b/tools/firmware/hvmloader/config.h
index 57e6117b01..18b27e2fc2 100644
--- a/tools/firmware/hvmloader/config.h
+++ b/tools/firmware/hvmloader/config.h
@@ -41,6 +41,7 @@ extern unsigned long pci_mem_start, pci_mem_end;
 #define SMBIOS_PHYSICAL_ADDRESS       0x000EB000
 #define SMBIOS_MAXIMUM_SIZE           0x00005000
 #define ROMBIOS_PHYSICAL_ADDRESS      0x000F0000
+#define HVMLOADER_PHYSICAL_ADDRESS    0x00100000
 
 /* Offsets from E820_PHYSICAL_ADDRESS. */
 #define E820_NR_OFFSET                0x0
diff --git a/tools/firmware/hvmloader/hypercall.h b/tools/firmware/hvmloader/hypercall.h
index 2df7247359..2de0d828e1 100644
--- a/tools/firmware/hvmloader/hypercall.h
+++ b/tools/firmware/hvmloader/hypercall.h
@@ -39,7 +39,8 @@
  * NB. Hypercall address needs to be relative to a linkage symbol for
  * some version of ld to relocate the relative calls properly.
  */
-#define hypercall_pa "_start - " STR(HYPERCALL_PHYSICAL_ADDRESS)
+#define hypercall_pa "_start - " STR(HVMLOADER_PHYSICAL_ADDRESS) \
+                           " + " STR(HYPERCALL_PHYSICAL_ADDRESS)
 
 #define _hypercall0(type, name)						\
 ({									\