diff --git a/misc/acrn-config/board_config/board_cfg_gen.py b/misc/acrn-config/board_config/board_cfg_gen.py
index 1633acf5e..44db88f96 100755
--- a/misc/acrn-config/board_config/board_cfg_gen.py
+++ b/misc/acrn-config/board_config/board_cfg_gen.py
@@ -22,6 +22,16 @@ ACRN_DEFAULT_PLATFORM = ACRN_PATH + "hypervisor/include/arch/x86/default_acpi_in
 GEN_FILE = ["pci_devices.h", "board.c", "_acpi_info.h", "misc_cfg.h", "ve820.c", ".config"]
 
 
+def need_gen_new_board_config(board_name):
+
+    # 1. if it is old board, they are already have the $(board_name).config, return and no need to generate it.
+
+    if board_name in board_cfg_lib.BOARD_NAMES:
+        return False
+    else:
+        return True
+
+
 def main(args):
     """
     This is main function to start generate source code related with board
@@ -103,7 +113,7 @@ def main(args):
             return err_dic
 
     # generate new board_name.config
-    if board not in board_cfg_lib.BOARD_NAMES:
+    if need_gen_new_board_config(board):
         with open(config_board_kconfig, 'w+') as config:
             err_dic = new_board_kconfig.generate_file(config)
             if err_dic:
diff --git a/misc/acrn-config/board_config/new_board_kconfig.py b/misc/acrn-config/board_config/new_board_kconfig.py
index 4a64a7996..75fecaaf1 100644
--- a/misc/acrn-config/board_config/new_board_kconfig.py
+++ b/misc/acrn-config/board_config/new_board_kconfig.py
@@ -64,6 +64,34 @@ def get_ram_range():
     return ram_range
 
 
+def get_serial_type():
+    """ Get the serial type of consle which set by user """
+    ttys_type = ''
+
+    # Get ttySx information from board config file
+    ttys_lines = board_cfg_lib.get_info(board_cfg_lib.BOARD_INFO_FILE, "<TTYS_INFO>", "</TTYS_INFO>")
+
+    scenario_name = board_cfg_lib.get_scenario_name()
+    if scenario_name == "logical_partition":
+        ttyn = 'ttyS0'
+    else:
+        # Get ttySx from scenario config file which selected by user
+        (err_dic, ttyn) = board_cfg_lib.parser_vuart_console()
+        if err_dic:
+            board_cfg_lib.ERR_LIST.update(err_dic)
+
+    # query the serial type from board config file
+    for line in ttys_lines:
+        if ttyn in line:
+            # line format:
+            # seri:/dev/ttyS0 type:portio base:0x3F8 irq:4
+            # seri:/dev/ttyS0 type:mmio base:0xB3640000 irq:4
+            ttys_type = line.split()[1].split(':')[1]
+            break
+
+    return ttys_type
+
+
 def generate_file(config):
     """Start to generate board.c
     :param config: it is a file pointer of board information for writing to
@@ -87,11 +115,17 @@ def generate_file(config):
     avl_start_addr = find_avl_memory(ram_range, str(total_size))
     hv_start_addr = int(avl_start_addr, 16) + int(hex(reserved_ram), 16)
 
-    print('CONFIG_BOARD="{}"'.format(board_cfg_lib.BOARD_NAME), file=config)
     print("{}".format(DESC), file=config)
+    print('CONFIG_BOARD="{}"'.format(board_cfg_lib.BOARD_NAME), file=config)
+
+    serial_type = get_serial_type()
+
+    if serial_type == "portio":
+        print("CONFIG_SERIAL_LEGACY=y", file=config)
+    if serial_type == "mmio":
+        print("CONFIG_SERIAL_PCI=y", file=config)
 
     print("CONFIG_HV_RAM_START={}".format(hex(hv_start_addr)), file=config)
-
     print("CONFIG_HV_RAM_SIZE={}".format(hex(hv_ram_size)), file=config)
 
     return err_dic
diff --git a/misc/acrn-config/library/board_cfg_lib.py b/misc/acrn-config/library/board_cfg_lib.py
index a8239b886..5375af51b 100644
--- a/misc/acrn-config/library/board_cfg_lib.py
+++ b/misc/acrn-config/library/board_cfg_lib.py
@@ -71,8 +71,8 @@ def get_scenario_name():
     Get scenario name from scenario.xml at fist line
     :param scenario_info: it is a file what contains board information for script to read from
     """
-    (err_dic, board) = common.get_xml_attrib(SCENARIO_INFO_FILE, "scenario")
-    return (err_dic, board)
+    (err_dic, scenario) = common.get_xml_attrib(SCENARIO_INFO_FILE, "scenario")
+    return (err_dic, scenario)
 
 
 def is_config_file_match():