diff --git a/host/lib/crossystem.c b/host/lib/crossystem.c
index 692eb612b1..70f39ddb2f 100644
--- a/host/lib/crossystem.c
+++ b/host/lib/crossystem.c
@@ -61,6 +61,7 @@
 #define ACPI_BINF_PATH ACPI_BASE_PATH "/BINF"
 #define ACPI_CHNV_PATH ACPI_BASE_PATH "/CHNV"
 #define ACPI_CHSW_PATH ACPI_BASE_PATH "/CHSW"
+#define ACPI_FMAP_PATH ACPI_BASE_PATH "/FMAP"
 #define ACPI_GPIO_PATH ACPI_BASE_PATH "/GPIO"
 
 /* Base name for GPIO files */
@@ -395,6 +396,8 @@ int VbGetSystemPropertyInt(const char* name) {
   /* Other parameters */
   else if (!strcasecmp(name,"recovery_reason")) {
     return VbGetRecoveryReason();
+  } else if (!strcasecmp(name,"fmap_base")) {
+    value = ReadFileInt(ACPI_FMAP_PATH);
   }
 
   /* TODO: implement the following properties:
diff --git a/utility/crossystem_main.c b/utility/crossystem_main.c
index 23a9779dea..acf39e28ce 100644
--- a/utility/crossystem_main.c
+++ b/utility/crossystem_main.c
@@ -31,6 +31,7 @@ const Param sys_param_list[] = {
   {"recovery_reason",  0, 0, "Recovery mode reason for current boot"},
   {"savedmem_base", 0, 0, "RAM debug data area physical address"},
   {"savedmem_size", 0, 0, "RAM debug data area size in bytes"},
+  {"fmap_base", 0, 0, "Main firmware flashmap physical address"},
   /* Read-only strings */
   {"hwid", 1, 0, "Hardware ID"},
   {"fwid", 1, 0, "Active firmware ID"},