diff --git a/src/mainboard/intel/harcuvar/Makefile.inc b/src/mainboard/intel/harcuvar/Makefile.inc
index ba88569..d100688 100644
--- a/src/mainboard/intel/harcuvar/Makefile.inc
+++ b/src/mainboard/intel/harcuvar/Makefile.inc
@@ -2,6 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ## Copyright (C) 2014 - 2017 Intel Corporation.
+## Copyright (C) 2017 Online SAS.
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -16,9 +17,11 @@
 subdirs-$(CONFIG_ENABLE_FSP_MEMORY_DOWN) += spd
 
 romstage-y += boardid.c
+romstage-y += hsio.c
 
 ramstage-y += ramstage.c
 ramstage-y += boardid.c
+ramstage-y += hsio.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi_tables.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += fadt.c
 
diff --git a/src/mainboard/intel/harcuvar/hsio.c b/src/mainboard/intel/harcuvar/hsio.c
new file mode 100644
index 0000000..fa17130
--- /dev/null
+++ b/src/mainboard/intel/harcuvar/hsio.c
@@ -0,0 +1,36 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Intel Corporation.
+ * Copyright (C) 2017 Online SAS.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <harcuvar_boardid.h>
+#include <hsio.h>
+#include <soc/fiamux.h>
+
+size_t mainboard_get_hsio_config(BL_HSIO_INFORMATION **p_hsio_config)
+{
+    uint8_t boardid = board_id();
+    size_t num;
+    switch (boardid) {
+    case BoardIdHarcuvar:
+        num = ARRAY_SIZE(harcuvar_hsio_config);
+        (*p_hsio_config) = (BL_HSIO_INFORMATION *)harcuvar_hsio_config;
+        break;
+    default:
+        num = 0;
+        (*p_hsio_config) = NULL;
+        break;
+    }
+    return num;
+}