diff --git a/meta-gbs/recipes-phosphor/ipmi/phosphor-ipmi-flash_%.bbappend b/meta-gbs/recipes-phosphor/ipmi/phosphor-ipmi-flash_%.bbappend
new file mode 100644
index 0000000..9f4c890
--- /dev/null
+++ b/meta-gbs/recipes-phosphor/ipmi/phosphor-ipmi-flash_%.bbappend
@@ -0,0 +1,5 @@
+NUVOTON_FLASH_PCIMBOX = "0xF0848000"
+
+EXTRA_OECONF_append_gbs = " --enable-nuvoton-p2a-mbox"
+
+IPMI_FLASH_BMC_ADDRESS_gbs = "${NUVOTON_FLASH_PCIMBOX}"