diff --git a/misc/acrn-config/board_config/board_cfg_gen.py b/misc/acrn-config/board_config/board_cfg_gen.py
index ba8c83e15..73b93b4f9 100755
--- a/misc/acrn-config/board_config/board_cfg_gen.py
+++ b/misc/acrn-config/board_config/board_cfg_gen.py
@@ -40,6 +40,7 @@ def main(args):
     common.BOARD_INFO_FILE = params['--board']
     common.SCENARIO_INFO_FILE = params['--scenario']
     common.get_vm_num(params['--scenario'])
+    common.get_vm_types()
 
     # get board name
     (err_dic, board) = common.get_board_name()
diff --git a/misc/acrn-config/board_config/misc_cfg_h.py b/misc/acrn-config/board_config/misc_cfg_h.py
index 8edf63ef6..68f24d9e0 100644
--- a/misc/acrn-config/board_config/misc_cfg_h.py
+++ b/misc/acrn-config/board_config/misc_cfg_h.py
@@ -48,27 +48,18 @@ def sos_bootarg_diff(sos_cmdlines, config):
 def parse_boot_info():
 
     err_dic = {}
-    vm_types = []
 
-    (err_dic, scenario_name) = common.get_scenario_name()
-    if err_dic:
-        return (err_dic, sos_cmdlines, sos_rootfs, vuart0_dic, vuart1_dic, vm_types)
-
-    if scenario_name != "logical_partition":
-        sos_cmdlines = common.get_sub_leaf_tag(common.SCENARIO_INFO_FILE, "board_private", "bootargs")
-        sos_rootfs = common.get_sub_leaf_tag(common.SCENARIO_INFO_FILE, "board_private", "rootfs")
+    if 'SOS_VM' in common.VM_TYPES.values():
+        sos_cmdlines = list(common.get_leaf_tag_map(common.SCENARIO_INFO_FILE, "board_private", "bootargs").values())
+        sos_rootfs = list(common.get_leaf_tag_map(common.SCENARIO_INFO_FILE, "board_private", "rootfs").values())
         (err_dic, vuart0_dic, vuart1_dic) = board_cfg_lib.get_board_private_vuart("board_private", "console")
     else:
-        sos_cmdlines = common.get_sub_leaf_tag(common.SCENARIO_INFO_FILE, "os_config", "bootargs")
+        sos_cmdlines = list(common.get_leaf_tag_map(common.SCENARIO_INFO_FILE, "os_config", "bootargs").values())
 
-        sos_rootfs = common.get_sub_leaf_tag(common.SCENARIO_INFO_FILE, "os_config", "rootfs")
+        sos_rootfs = list(common.get_leaf_tag_map(common.SCENARIO_INFO_FILE, "os_config", "rootfs").values())
         (err_dic, vuart0_dic, vuart1_dic) = board_cfg_lib.get_board_private_vuart("os_config", "console")
 
-    for i in range(common.VM_COUNT):
-        vm_type = board_cfg_lib.get_order_type_by_vmid(i)
-        vm_types.append(vm_type)
-
-    return (err_dic, sos_cmdlines, sos_rootfs, vuart0_dic, vuart1_dic, vm_types)
+    return (err_dic, sos_cmdlines, sos_rootfs, vuart0_dic, vuart1_dic)
 
 
 def find_hi_mmio_window(config):
@@ -129,7 +120,7 @@ def generate_file(config):
         return err_dic
 
     # parse sos_bootargs/rootfs/console
-    (err_dic, sos_cmdlines, sos_rootfs, vuart0_dic, vuart1_dic, vm_types) = parse_boot_info()
+    (err_dic, sos_cmdlines, sos_rootfs, vuart0_dic, vuart1_dic) = parse_boot_info()
     if err_dic:
         return err_dic
 
@@ -176,7 +167,7 @@ def generate_file(config):
 
     # sos rootfs and console
     print("", file=config)
-    if "SOS_VM" in vm_types:
+    if "SOS_VM" in common.VM_TYPES.values():
         print('#define SOS_ROOTFS\t\t"root={} "'.format(sos_rootfs[0]), file=config)
         if ttys_n:
             print('#define SOS_CONSOLE\t\t"console={} "'.format(ttys_n), file=config)
@@ -185,12 +176,12 @@ def generate_file(config):
 
     # sos com base/irq
     i_type = 0
-    for vm_type in vm_types:
+    for vm_i,vm_type in common.VM_TYPES.items():
         if vm_type == "SOS_VM":
+            i_type = vm_i
             break
-        i_type += 1
 
-    if "SOS_VM" in vm_types:
+    if "SOS_VM" in common.VM_TYPES.values():
         if vuart0_dic:
             print("#define SOS_COM1_BASE\t\t{}U".format(vuart0_port_base), file=config)
             print("#define SOS_COM1_IRQ\t\t{}U".format(vuart0_irq), file=config)
@@ -204,7 +195,7 @@ def generate_file(config):
 
     # sos boot command line
     print("", file=config)
-    if "SOS_VM" in vm_types:
+    if "SOS_VM" in common.VM_TYPES.values():
         sos_bootarg_diff(sos_cmdlines, config)
 
     # set macro for HIDDEN PTDEVS
diff --git a/misc/acrn-config/hv_config/board_defconfig.py b/misc/acrn-config/hv_config/board_defconfig.py
index f9f914a2d..db28a7c17 100644
--- a/misc/acrn-config/hv_config/board_defconfig.py
+++ b/misc/acrn-config/hv_config/board_defconfig.py
@@ -85,14 +85,10 @@ def get_serial_type():
     # Get ttySx information from board config file
     ttys_lines = board_cfg_lib.get_info(common.BOARD_INFO_FILE, "<TTYS_INFO>", "</TTYS_INFO>")
 
-    (err_dic, scenario_name) = common.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:
-            hv_cfg_lib.ERR_LIST.update(err_dic)
+    # Get ttySx from scenario config file which selected by user
+    (err_dic, ttyn) = board_cfg_lib.parser_vuart_console()
+    if err_dic:
+        hv_cfg_lib.ERR_LIST.update(err_dic)
 
     # query the serial type from board config file
     for line in ttys_lines:
@@ -189,7 +185,6 @@ def get_capacities(hv_info, config):
     print("CONFIG_MAX_IOAPIC_NUM={}".format(hv_info.cap.max_ioapic_num), file=config)
     print("CONFIG_MAX_IR_ENTRIES={}".format(hv_info.cap.max_ir_entries), file=config)
     print("CONFIG_MAX_PCI_DEV_NUM={}".format(hv_info.cap.max_pci_dev_num), file=config)
-    print("CONFIG_MAX_KATA_VM_NUM={}".format(hv_info.cap.max_kata_vm_num), file=config)
     print("CONFIG_MAX_IOAPIC_LINES={}".format(hv_info.cap.max_ioapic_lines), file=config)
     print("CONFIG_MAX_PT_IRQ_ENTRIES={}".format(hv_info.cap.max_pt_irq_entries), file=config)
     print("CONFIG_MAX_MSIX_TABLE_NUM={}".format(hv_info.cap.max_msix_table_num), file=config)
@@ -219,7 +214,6 @@ def generate_file(hv_info, config):
     if hv_info.log.release == 'y':
         print("CONFIG_RELEASE=y", file=config)
     print('CONFIG_BOARD="{}"'.format(board_name), file=config)
-    print("CONFIG_{}=y".format(scenario_name.upper()), file=config)
 
     get_memory(hv_info, config)
     get_miscfg(hv_info, config)
diff --git a/misc/acrn-config/launch_config/launch_cfg_gen.py b/misc/acrn-config/launch_config/launch_cfg_gen.py
index 39beff101..244c6acb4 100644
--- a/misc/acrn-config/launch_config/launch_cfg_gen.py
+++ b/misc/acrn-config/launch_config/launch_cfg_gen.py
@@ -164,6 +164,7 @@ def main(args):
     common.BOARD_INFO_FILE = board_info_file
     common.SCENARIO_INFO_FILE = scenario_info_file
     common.LAUNCH_INFO_FILE = launch_info_file
+    common.get_vm_types()
 
     # get post vm dic
     post_num_list = launch_cfg_lib.get_post_num_list()
diff --git a/misc/acrn-config/library/board_cfg_lib.py b/misc/acrn-config/library/board_cfg_lib.py
index 3fbf41b71..d7007061d 100644
--- a/misc/acrn-config/library/board_cfg_lib.py
+++ b/misc/acrn-config/library/board_cfg_lib.py
@@ -170,19 +170,6 @@ def clos_info_parser(board_info):
     return get_max_clos_mask(board_info)
 
 
-def get_order_type_by_vmid(idx):
-    """
-    This is get pre launched vm count
-    :param idx: index of vm id
-    :return: vm type of index to vmid
-    """
-    (err_dic, order_type) = common.get_load_order_by_vmid(common.SCENARIO_INFO_FILE, common.VM_COUNT, idx)
-    if err_dic:
-        ERR_LIST.update(err_dic)
-
-    return order_type
-
-
 def get_valid_irq(board_info):
     """
      This is get available irq from board info file
@@ -254,8 +241,7 @@ def parser_vuart_console():
     3. ttyS2
     """
     ttys_n = ''
-    (err_dic, scenario_name) = common.get_scenario_name()
-
+    err_dic = {}
     ttys = common.get_hv_item_tag(common.SCENARIO_INFO_FILE, "DEBUG_OPTIONS", "SERIAL_CONSOLE")
 
     if not ttys or ttys == None:
@@ -345,6 +331,9 @@ def get_vuart_info_id(config_file, idx):
     vm_id = 0
     root = common.get_config_root(config_file)
     for item in root:
+        if item.tag == "vm":
+            vm_id = int(item.attrib['id'])
+
         for sub in item:
             tmp_vuart = {}
             for leaf in sub:
@@ -355,9 +344,6 @@ def get_vuart_info_id(config_file, idx):
             if tmp_vuart and sub.tag == "vuart":
                 tmp_tag[vm_id] = tmp_vuart
 
-        if item.tag == "vm":
-            vm_id += 1
-
     return tmp_tag
 
 
diff --git a/misc/acrn-config/library/common.py b/misc/acrn-config/library/common.py
index 15cd13eed..058b607ed 100644
--- a/misc/acrn-config/library/common.py
+++ b/misc/acrn-config/library/common.py
@@ -31,6 +31,7 @@ VM_COUNT = 0
 BOARD_INFO_FILE = ""
 SCENARIO_INFO_FILE = ""
 LAUNCH_INFO_FILE = ""
+VM_TYPES = {}
 
 class MultiItem():
 
@@ -204,36 +205,19 @@ def is_config_file_match():
         return (err_dic, False)
 
 
-def find_index_guest_flag(flag):
+def find_tmp_flag(flag):
     """
     Find the index in GUEST_FLAG by flag
     :param flag: flag contained by GUEST_FLAG
     :return: index of GUEST_FLAG
     """
-    if not flag or flag == '0':
-        return '0'
+    if flag == None or flag == '0':
+        return '0UL'
 
-    if not flag.isnumeric():
-        for i in range(len(GUEST_FLAG)):
-            if flag == GUEST_FLAG[i]:
-                flag_str = i
-                return flag_str
-
-def find_tmp_flag(leaf_text):
-    """
-    Get flag and append the value
-    :param leaf_text: it is a value of guest flag item
-    :return: a list of flag or none
-    """
-    tmp_flag = []
-    tmp_flag = find_index_guest_flag(leaf_text)
-    #flag_index = find_index_guest_flag(leaf_text)
-    #if flag_index == '0':
-    #    tmp_flag.append(0)
-    #else:
-    #    tmp_flag.append(flag_index)
-
-    return tmp_flag
+    flag_str = ''
+    for i in range(len(GUEST_FLAG)):
+        if flag == GUEST_FLAG[i]:
+            return flag_str
 
 
 def get_config_root(config_file):
@@ -266,67 +250,12 @@ def get_vm_num(config_file):
     VM_COUNT = vm_count
 
 
-# TODO: This will be abandonment in future
-def get_sub_leaf_tag(config_file, branch_tag, tag_str=''):
-    """
-     This is get tag value by tag_str from config file
-     :param config_file: it is a file what contains information for script to read from
-     :param branch_tag: it is key of patter to config file branch tag item
-     :param tag_str: it is key of pattern to config file leaf tag item
-     :return: value of tag_str item
-     """
-    tmp_tag = []
-    root = get_config_root(config_file)
-    for item in root:
-        # for each 2th level item
-        for sub in item:
-            tmp_flag = []
-            tmp_cpus = []
-            if sub.tag == branch_tag:
-                if not tag_str:
-                    tmp_tag.append(sub.text)
-                    continue
-
-                # for each 3rd level item
-                for leaf in sub:
-                    if leaf.tag == tag_str and tag_str not in MULTI_ITEM and sub.tag != "vuart":
-                        tmp_tag.append(leaf.text)
-                        continue
-
-                    # get guest flag for logical partition vm1
-                    if leaf.tag == "guest_flag" and tag_str == "guest_flag":
-                        t_flag = find_tmp_flag(leaf.text)
-                        tmp_flag.append(t_flag)
-                        #continue
-
-                    # get cpu for vm
-                    if leaf.tag == "pcpu_id" and tag_str == "pcpu_id":
-                        tmp_cpus.append(leaf.text)
-                        continue
-
-                    # get vcpu_clos for vm
-                    if leaf.tag == "vcpu_clos" and tag_str == "vcpu_clos":
-                        tmp_cpus.append(leaf.text)
-                        continue
-
-                # append guest flags for each vm
-                if tmp_flag and tag_str == "guest_flag":
-                    tmp_tag.append(tmp_flag)
-                    continue
-
-                # append cpus for vm
-                if tmp_cpus and tag_str == "pcpu_id":
-                    tmp_tag.append(tmp_cpus)
-                    continue
-
-    return tmp_tag
-
-
 def get_leaf_value(tmp, tag_str, leaf):
 
     # get guest flag for logical partition vm1
     if leaf.tag == "guest_flag" and tag_str == "guest_flag":
         t_flag = find_tmp_flag(leaf.text)
+        #print("--debug: tag:{},{}".format(tag_str), t_flag)
         tmp.multi.guest_flag.append(t_flag)
 
     # get cpu for vm
@@ -355,7 +284,6 @@ def get_sub_value(tmp, tag_str, vm_id):
     # append guest flags for each vm
     if tmp.multi.guest_flag and tag_str == "guest_flag":
         tmp.tag[vm_id] = tmp.multi.guest_flag
-        tmp.tag.append(tmp.multi.guest_flag)
 
     # append cpus for vm
     if tmp.multi.pcpu_id and tag_str == "pcpu_id":
@@ -442,37 +370,6 @@ def get_hv_item_tag(config_file, branch_tag, tag_str=''):
     return tmp
 
 
-def order_type_map_vmid(config_file, vm_count):
-    """
-    This is mapping table for {id:order type}
-    :param config_file: it is a file what contains information for script to read from
-    :param vm_count: vm number
-    :return: table of id:order type dictionary
-    """
-    order_id_dic = {}
-    load_type_list = get_sub_leaf_tag(config_file, "load_order")
-    for i in range(vm_count):
-        order_id_dic[i] = load_type_list[i]
-
-    return order_id_dic
-
-
-def get_load_order_by_vmid(config_file, vm_count, idx):
-    """
-    Get load order by vm id
-    :param config_file: it is a file what contains information for script to read from
-    :param vm_count: vm number
-    :param idx: index of vm id
-    :return: table of id:order type dictionary
-    """
-    err_dic = {}
-    order_id_dic = order_type_map_vmid(config_file, vm_count)
-    if idx >= vm_count or not order_id_dic:
-        err_dic['vm number: failue'] = "Toatal vm number is less than index number"
-
-    return (err_dic, order_id_dic[idx])
-
-
 def undline_name(name):
     """
     This convert name which has contain '-' to '_'
@@ -519,3 +416,8 @@ def num2int(str_value):
         val = int(str_value, 16)
 
     return val
+
+
+def get_vm_types():
+    global VM_TYPES
+    VM_TYPES = get_leaf_tag_map(SCENARIO_INFO_FILE, "load_order")
diff --git a/misc/acrn-config/library/launch_cfg_lib.py b/misc/acrn-config/library/launch_cfg_lib.py
index 18a021461..82cb7cb90 100644
--- a/misc/acrn-config/library/launch_cfg_lib.py
+++ b/misc/acrn-config/library/launch_cfg_lib.py
@@ -166,9 +166,8 @@ def post_vm_cnt(config_file):
     :return: number of post launched vm
     """
     post_launch_cnt = 0
-    load_type_list = common.get_sub_leaf_tag(config_file, "load_order")
 
-    for vm_type in load_type_list:
+    for vm_type in common.VM_TYPES.values():
         if vm_type == "POST_LAUNCHED_VM":
             post_launch_cnt += 1
 
diff --git a/misc/acrn-config/library/scenario_cfg_lib.py b/misc/acrn-config/library/scenario_cfg_lib.py
index 1bf2ed8ef..f4fa3f377 100644
--- a/misc/acrn-config/library/scenario_cfg_lib.py
+++ b/misc/acrn-config/library/scenario_cfg_lib.py
@@ -14,7 +14,6 @@ START_HPA_LIST = ['0', '0x100000000', '0x120000000']
 KERN_TYPE_LIST = ['KERNEL_BZIMAGE', 'KERNEL_ZEPHYR']
 KERN_BOOT_ADDR_LIST = ['0x100000']
 
-GUEST_FLAG = common.GUEST_FLAG
 VM_SEVERITY = ['SEVERITY_SAFETY_VM', 'SEVERITY_RTVM', 'SEVERITY_SOS', 'SEVERITY_STANDARD_VM']
 VUART_TYPE = ['VUART_LEGACY_PIO', 'VUART_PCI']
 VUART_BASE = ['SOS_COM1_BASE', 'SOS_COM2_BASE', 'COM1_BASE',
@@ -36,60 +35,25 @@ COMMUNICATE_VM_ID = []
 
 ERR_LIST = {}
 
-DEFAULT_VM_COUNT = {
-    'sdc':2,
-    'sdc2':4,
-    'industry':3,
-    'hybrid':3,
-    'logical_partition':2,
-}
 KATA_VM_COUNT = 0
 
 
-def get_board_private_info(config_file):
-
-    (err_dic, scenario_name) = common.get_scenario_name()
-
-    if scenario_name == "logical_partition":
-        branch_tag = "os_config"
-    else:
-        branch_tag = "board_private"
-
-    private_info = {}
-    dev_private_tags = ['rootfs', 'console']
-    for tag_str in dev_private_tags:
-        dev_setting = common.get_sub_leaf_tag(config_file, branch_tag, tag_str)
-        if not dev_setting and tag_str == "console":
-            continue
-
-        private_info[tag_str] = dev_setting
-
-    return (err_dic, private_info)
-
-
 def check_board_private_info():
 
-    (err_dic, private_info) = get_board_private_info(common.SCENARIO_INFO_FILE)
+    if 'SOS_VM' not in common.VM_TYPES.values():
+        return
+    branch_tag = "board_private"
+    private_info = {}
+    dev_private_tags = ['rootfs']
+    for tag_str in dev_private_tags:
+        dev_setting = common.get_leaf_tag_map(common.SCENARIO_INFO_FILE, branch_tag, tag_str)
+        private_info[tag_str] = dev_setting
 
     if not private_info['rootfs'] and err_dic:
         ERR_LIST['vm:id=0,boot_private,rootfs'] = "The board have to chose one rootfs partition"
         ERR_LIST.update(err_dic)
 
 
-def get_order_type_by_vmid(idx):
-    """
-     Get load order by vm id
-
-     :param idx: index of vm id
-     :return: load order type of index to vmid
-     """
-    (err_dic, order_type) = common.get_load_order_by_vmid(common.SCENARIO_INFO_FILE, common.VM_COUNT, idx)
-    if err_dic:
-        ERR_LIST.update(err_dic)
-
-    return order_type
-
-
 def vm_name_check(vm_names, item):
     """
     Check vm name
@@ -163,24 +127,13 @@ def get_load_order_cnt(load_orders, type_name):
     return type_cnt
 
 
-def guest_flag_check(guest_flag_idx, branch_tag, leaf_tag):
+def guest_flag_check(guest_flags, branch_tag, leaf_tag):
 
-    guest_flag_len = len(common.GUEST_FLAG)
-    guest_num = len(guest_flag_idx)
-
-    for vm_i in range(guest_num):
-        flag_len = len(guest_flag_idx[vm_i])
-        if flag_len <= guest_flag_len:
-            continue
-        else:
-            key = "vm:id={},{},{}".format(vm_i, branch_tag, leaf_tag)
-            ERR_LIST[key] = "Unknow guest flag"
-    #    for flag_i in range(flag_len):
-    #        if guest_flag_idx[vm_i][flag_i] in common.GUEST_FLAG:
-    #            continue
-    #        else:
-    #            key = "vm:id={},{},{}".format(vm_i, branch_tag, leaf_tag)
-    #            ERR_LIST[key] = "Invalid guest flag"
+    for vm_i, flags in guest_flags.items():
+        for guest_flag in flags:
+            if guest_flag and guest_flag not in common.GUEST_FLAG:
+                key = "vm:id={},{},{}".format(vm_i, branch_tag, leaf_tag)
+                ERR_LIST[key] = "Unknow guest flag"
 
 
 def uuid_format_check(uuid_dic, item):
@@ -215,13 +168,19 @@ def cpus_per_vm_check(id_cpus_per_vm_dic, item):
     :param item: vm pcpu_id item in xml
     :return: None
     """
+    for vm_i, vm_type in common.VM_TYPES.items():
+        if vm_i not in id_cpus_per_vm_dic.keys() and vm_type == "SOS_VM":
+            continue
+        elif vm_i not in id_cpus_per_vm_dic.keys() and vm_type in ("PRE_LAUNCHED_VM", "POST_LAUNCHED"):
+            key = "vm:id={},{}".format(vm_i, item)
+            ERR_LIST[key] = "Pre launched_vm and Post launched vm should have cpus assignment"
+            return
 
-    for id_key in id_cpus_per_vm_dic.keys():
-        vm_type = get_order_type_by_vmid(id_key)
-        cpus_vm_i = id_cpus_per_vm_dic[id_key]
-        if not cpus_vm_i and vm_type == "PRE_LAUNCHED_VM":
-            key = "vm:id={},{}".format(id_key, item)
-            ERR_LIST[key] = "VM have no assignment cpus"
+        cpus_vm_i = id_cpus_per_vm_dic[vm_i]
+        if not cpus_vm_i:
+            key = "vm:id={},{}".format(vm_i, item)
+            ERR_LIST[key] = "{} VM have no assignment cpus".format(vm_type)
+            return
 
 
 def mem_start_hpa_check(id_start_hpa_dic, prime_item, item):
@@ -327,11 +286,12 @@ def os_kern_args_check(id_kern_args_dic, prime_item, item):
     :return: None
     """
 
-    for id_key, kern_args in id_kern_args_dic.items():
-        vm_type = get_order_type_by_vmid(id_key)
-
+    for vm_i,vm_type in common.VM_TYPES.items():
+        if vm_i not in id_kern_args_dic.keys():
+            continue
+        kern_args = id_kern_args_dic[vm_i]
         if vm_type == "SOS_VM" and kern_args != "SOS_VM_BOOTARGS":
-            key = "vm:id={},{},{}".format(id_key, prime_item, item)
+            key = "vm:id={},{},{}".format(vm_i, prime_item, item)
             ERR_LIST[key] = "VM os config kernel service os should be SOS_VM_BOOTARGS"
 
 
@@ -409,12 +369,13 @@ def pci_dev_num_check(id_dev_num_dic, item):
     :return: None
     """
 
-    for id_key, pci_dev_num in id_dev_num_dic.items():
-
-        vm_type = get_order_type_by_vmid(id_key)
+    for vm_i,vm_type in common.VM_TYPES.items():
+        if vm_i not in id_dev_num_dic.keys():
+            continue
+        pci_dev_num = id_dev_num_dic[vm_i]
         if vm_type != "POST_LAUNCHED_VM" and pci_dev_num:
             if pci_dev_num not in PCI_DEV_NUM_LIST:
-                key = "vm:id={},{}".format(id_key, item)
+                key = "vm:id={},{}".format(vm_i, item)
                 ERR_LIST[key] = "VM pci device number  shoud be one of {}".format(PCI_DEV_NUM_LIST)
 
 def pci_devs_check(id_devs_dic, item):
@@ -424,12 +385,13 @@ def pci_devs_check(id_devs_dic, item):
     :return: None
     """
 
-    for id_key, pci_dev in id_devs_dic.items():
-
-        vm_type = get_order_type_by_vmid(id_key)
+    for vm_i,vm_type in common.VM_TYPES.items():
+        if vm_i not in id_devs_dic.keys():
+            continue
+        pci_dev = id_devs_dic[vm_i]
         if vm_type != "POST_LAUNCHED_VM" and pci_dev:
             if pci_dev not in PCI_DEVS_LIST:
-                key = "vm:id={},{}".format(id_key, item)
+                key = "vm:id={},{}".format(vm_i, item)
                 ERR_LIST[key] = "VM pci device shoud be one of {}".format(PCI_DEVS_LIST)
 
 
@@ -440,7 +402,7 @@ def get_vuart1_vmid(vm_vuart1):
     :return: dictionary of vmid:vuart1
     """
     vm_id_dic = {}
-    for i in range(common.VM_COUNT):
+    for i in list(common.VM_TYPES.keys()):
         for key in vm_vuart1[i].keys():
             if key == "target_vm_id":
                 vm_id_dic[i] = vm_vuart1[i][key]
@@ -510,8 +472,7 @@ def clos_assignment(clos_per_vm, index):
 
 def avl_vuart_ui_select(scenario_info):
     tmp_vuart = {}
-    for vm_i in range(common.VM_COUNT):
-        vm_type = get_order_type_by_vmid(vm_i)
+    for vm_i,vm_type in common.VM_TYPES.items():
 
         if vm_type == "SOS_VM":
             key = "vm={},vuart=0,base".format(vm_i)
@@ -529,9 +490,10 @@ def avl_vuart_ui_select(scenario_info):
 
 def get_first_post_vm():
 
-    for i in range(common.VM_COUNT):
-        (err_dic, vm_type) = common.get_load_order_by_vmid(common.SCENARIO_INFO_FILE, common.VM_COUNT, i)
+    i = 0
+    for vm_i,vm_type in common.VM_TYPES.items():
         if vm_type == "POST_LAUNCHED_VM":
+            i = vm_i
             break
 
     return (err_dic, i)
diff --git a/misc/acrn-config/scenario_config/pci_dev_c.py b/misc/acrn-config/scenario_config/pci_dev_c.py
index 280d71662..f4eafffbe 100644
--- a/misc/acrn-config/scenario_config/pci_dev_c.py
+++ b/misc/acrn-config/scenario_config/pci_dev_c.py
@@ -29,7 +29,7 @@ def generate_file(config):
     print(" * The memory range of vBAR should exactly match with the e820 layout of VM.",
           file=config)
     print(" */", file=config)
-    for i in range(common.VM_COUNT):
+    for i in list(common.VM_TYPES.keys()):
         print("", file=config)
         print("struct acrn_vm_pci_dev_config " +
               "vm{}_pci_devs[VM{}_CONFIG_PCI_DEV_NUM] = {{".format(i, i), file=config)
diff --git a/misc/acrn-config/scenario_config/scenario_cfg_gen.py b/misc/acrn-config/scenario_config/scenario_cfg_gen.py
index 6b1cb2b8a..9896c40e4 100755
--- a/misc/acrn-config/scenario_config/scenario_cfg_gen.py
+++ b/misc/acrn-config/scenario_config/scenario_cfg_gen.py
@@ -38,9 +38,10 @@ def get_scenario_item_values(board_info, scenario_info):
     common.BOARD_INFO_FILE = board_info
     common.SCENARIO_INFO_FILE = scenario_info
     common.get_vm_num(scenario_info)
+    common.get_vm_types()
 
     # pre scenario
-    guest_flags = copy.deepcopy(scenario_cfg_lib.GUEST_FLAG)
+    guest_flags = copy.deepcopy(common.GUEST_FLAG)
     guest_flags.remove('0UL')
     scenario_item_values["vm,vcpu_affinity"] = hw_info.get_processor_val()
     scenario_item_values["vm,guest_flags"] = guest_flags
@@ -125,6 +126,7 @@ def main(args):
     common.SCENARIO_INFO_FILE = params['--scenario']
     common.ACRN_CONFIG_TARGET= os.path.abspath(params['--out']) + '/'
     common.get_vm_num(params['--scenario'])
+    common.get_vm_types()
 
     # get board name
     (err_dic, board_name) = common.get_board_name()
@@ -174,16 +176,16 @@ def main(args):
 
     # generate vm_configuration.h
     with open(vm_config_h, 'w') as config:
-        vm_configurations_h.generate_file(scenario, scenario_items['vm'], config)
+        vm_configurations_h.generate_file(scenario_items, config)
 
     # generate vm_configuration.c
     with open(vm_config_c, 'w') as config:
-        err_dic = vm_configurations_c.generate_file(scenario, scenario_items['vm'], config)
+        err_dic = vm_configurations_c.generate_file(scenario_items['vm'], config)
         if err_dic:
             return err_dic
 
-    # generate pci_dev.c if scenario is logical_partition
-    if scenario == 'logical_partition':
+    # generate pci_dev.c
+    if scenario_items['vm'].load_order_cnt.pre_vm >= 2:
         with open(pci_config_c, 'w') as config:
             pci_dev_c.generate_file(config)
 
diff --git a/misc/acrn-config/scenario_config/scenario_item.py b/misc/acrn-config/scenario_config/scenario_item.py
index d1cab98fd..6a7d149c0 100644
--- a/misc/acrn-config/scenario_config/scenario_item.py
+++ b/misc/acrn-config/scenario_config/scenario_item.py
@@ -249,7 +249,7 @@ class VmInfo:
     load_order = {}
     uuid = {}
     clos_per_vm = {}
-    guest_flag_idx = {}
+    guest_flags = {}
     cpus_per_vm = {}
     severity = {}
 
@@ -273,7 +273,7 @@ class VmInfo:
         self.name = common.get_leaf_tag_map(self.scenario_info, "name")
         self.load_order = common.get_leaf_tag_map(self.scenario_info, "load_order")
         self.uuid = common.get_leaf_tag_map(self.scenario_info, "uuid")
-        self.guest_flag_idx = common.get_sub_leaf_tag(
+        self.guest_flags = common.get_leaf_tag_map(
             self.scenario_info, "guest_flags", "guest_flag")
         self.cpus_per_vm = common.get_leaf_tag_map(
             self.scenario_info, "vcpu_affinity", "pcpu_id")
@@ -310,7 +310,7 @@ class VmInfo:
         scenario_cfg_lib.vm_name_check(self.name, "name")
         scenario_cfg_lib.load_order_check(self.load_order, "load_order")
         scenario_cfg_lib.uuid_format_check(self.uuid, "uuid")
-        scenario_cfg_lib.guest_flag_check(self.guest_flag_idx, "guest_flags", "guest_flag")
+        scenario_cfg_lib.guest_flag_check(self.guest_flags, "guest_flags", "guest_flag")
         scenario_cfg_lib.cpus_per_vm_check(self.cpus_per_vm, "pcpu_id")
 
         self.mem_info.check_item()
diff --git a/misc/acrn-config/scenario_config/vm_configurations_c.py b/misc/acrn-config/scenario_config/vm_configurations_c.py
index 00260ad69..4ee8c055b 100644
--- a/misc/acrn-config/scenario_config/vm_configurations_c.py
+++ b/misc/acrn-config/scenario_config/vm_configurations_c.py
@@ -75,7 +75,7 @@ def vuart0_output(i, vm_type, vm_info, config):
 def vuart_map_enable(vm_info):
 
     map_dic = {}
-    for i in range(common.VM_COUNT):
+    for i,vm_type in common.VM_TYPES.items():
         base_i = vm_info.vuart.v1_vuart[i]['base']
         src_t_vm_i = vm_info.vuart.v1_vuart[i]['target_vm_id']
         src_t_vuart_i = vm_info.vuart.v1_vuart[i]['target_uart_id']
@@ -124,8 +124,7 @@ def vuart1_output(i, vm_type, vuart1_vmid_dic, vm_info, config):
             print("\t\t\t.t_vuart.vuart_id = {0}U,".format(
                 vm_info.vuart.v1_vuart[i]['target_uart_id']), file=config)
 
-
-def vuart_output(i, vm_info, config):
+def vuart_output(vm_type, i, vm_info, config):
     """
     This is generate vuart setting
     :param i: vm id number
@@ -135,7 +134,6 @@ def vuart_output(i, vm_info, config):
     """
     vuart1_vmid_dic = {}
     vuart1_vmid_dic = scenario_cfg_lib.get_vuart1_vmid(vm_info.vuart.v1_vuart)
-    vm_type = scenario_cfg_lib.get_order_type_by_vmid(i)
 
     vuart0_output(i, vm_type, vm_info, config)
     vuart1_output(i, vm_type, vuart1_vmid_dic, vm_info, config)
@@ -148,8 +146,6 @@ def vuart_output(i, vm_info, config):
         if vm_info.cfg_pci.pci_devs[i] and vm_info.cfg_pci.pci_devs[i] != None:
             print("\t\t.pci_devs = {},".format(vm_info.cfg_pci.pci_devs[i]), file=config)
 
-    print("\t},", file=config)
-
 
 def is_need_epc(epc_section, i, config):
     """
@@ -160,7 +156,9 @@ def is_need_epc(epc_section, i, config):
     :return: None
     """
     # SOS_VM have not set epc section
-    vm_type = scenario_cfg_lib.get_order_type_by_vmid(i)
+    if i not in common.VM_TYPES.keys():
+        return
+    vm_type = list(common.VM_TYPES.keys())[i]
     if vm_type == "SOS_VM":
         return
 
@@ -204,34 +202,34 @@ def clos_output(vm_info, i, config):
     if len(rdt_res) != 0 and common_clos_max !=0 and i in vm_info.clos_per_vm:
         print("\t\t.clos = VM{}_VCPU_CLOS,".format(i), file=config)
 
-def get_guest_flag(flag_index):
+def get_guest_flag(flags):
     """
     This is get flag index list
-    :param flag_index:
+    :param flags:
     :return: flag index list in GUEST_FLAGS
     """
     err_dic = {}
     flag_str = ''
-    if not flag_index:
-        err_dic['guest flags'] = "No assign flag to the guest"
-        return (err_dic, flag_str)
+    for flag in flags:
+        if flags.count(flag) >= 2:
+            return (err_dic, flag)
 
-    for i in range(len(flag_index)):
+    for i in range(len(flags)):
         if i == 0:
-            if len(flag_index) == 1:
+            if len(flags) == 1:
                 # get the guest flag 0UL
-                if flag_index[0] == 0:
-                    return (err_dic, common.GUEST_FLAG[flag_index[0]])
-                flag_str = "{0}".format(common.GUEST_FLAG[int(flag_index[0])])
+                if flags[0] == '0UL':
+                    return (err_dic, flags[0])
+                flag_str = "{0}".format(flags[0])
             else:
-                flag_str = "({0}".format(common.GUEST_FLAG[int(flag_index[0])])
+                flag_str = "({0}".format(flags[0])
 
         else:
-            # flag_index lenght already minus 1
-            if i == len(flag_index) - 1:
-                flag_str = flag_str + " | {0})".format(common.GUEST_FLAG[int(flag_index[i])])
+            # flags lenght already minus 1
+            if i == len(flags) - 1:
+                flag_str = flag_str + " | {0})".format(flags[i])
             else:
-                flag_str = flag_str + " | {0}".format(common.GUEST_FLAG[int(flag_index[i])])
+                flag_str = flag_str + " | {0}".format(flags[i])
 
     return (err_dic, flag_str)
 
@@ -245,194 +243,119 @@ def gen_source_header(config):
     print("{0}".format(C_HEADER), file=config)
 
 
-def gen_sdc_source(vm_info, config):
-    """
-    Generate vm_configuration.c of sdc scenario
-    :param vm_info: it is the class which contain all user setting information
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    uuid_0 = uuid2str(vm_info.uuid[0])
-    uuid_1 = uuid2str(vm_info.uuid[1])
+def gen_sos_vm(vm_type, vm_i, vm_info, config):
 
-    (err_dic, sos_guest_flags) = get_guest_flag(vm_info.guest_flag_idx[0])
+    (err_dic, sos_guest_flags) = get_guest_flag(vm_info.guest_flags[vm_i])
     if err_dic:
         return err_dic
+    uuid_str = uuid2str(vm_info.uuid[vm_i])
 
-    gen_source_header(config)
-    # VM0
-    print("struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM] = {", file=config)
-    print("\t{", file=config)
+    print("\t{{\t/* VM{} */".format(vm_i), file=config)
     print("\t\t.load_order = {0},".format(
-        vm_info.load_order[0]), file=config)
-    print('\t\t.name = "{0}",'.format(vm_info.name[0]), file=config)
+        vm_info.load_order[vm_i]), file=config)
+    print('\t\t.name = "{0}",'.format(vm_info.name[vm_i]), file=config)
     # UUID
-    uuid_output(uuid_0, vm_info.uuid[0], config)
+    uuid_output(uuid_str, vm_info.uuid[vm_i], config)
     print("", file=config)
     print("\t\t/* Allow SOS to reboot the host since " +
           "there is supposed to be the highest severity guest */", file=config)
-    print("\t\t.guest_flags = {0},".format(sos_guest_flags), file=config)
-    vcpu_affinity_output(vm_info, 0, config)
-    print("\t\t.severity = {0},".format(vm_info.severity[0].strip()), file=config)
+    if sos_guest_flags:
+        print("\t\t.guest_flags = {0},".format(sos_guest_flags), file=config)
+    vcpu_affinity_output(vm_info, vm_i, config)
+    print("\t\t.severity = {0},".format(vm_info.severity[vm_i].strip()), file=config)
     print("\t\t.memory = {", file=config)
-    print("\t\t\t.start_hpa = {}UL,".format(vm_info.mem_info.mem_start_hpa[0]), file=config)
+    print("\t\t\t.start_hpa = {}UL,".format(vm_info.mem_info.mem_start_hpa[vm_i]), file=config)
     print("\t\t\t.size = {0},".format("CONFIG_SOS_RAM_SIZE"), file=config)
     print("\t\t},", file=config)
     print("\t\t.os_config = {", file=config)
-    print('\t\t\t.name = "{0}",'.format(vm_info.os_cfg.kern_name[0]), file=config)
-    print('\t\t\t.kernel_type = {0},'.format(vm_info.os_cfg.kern_type[0]), file=config)
+    print('\t\t\t.name = "{0}",'.format(vm_info.os_cfg.kern_name[vm_i]), file=config)
+    print('\t\t\t.kernel_type = {0},'.format(vm_info.os_cfg.kern_type[vm_i]), file=config)
     print('\t\t\t.kernel_mod_tag = "{0}",'.format(
-        vm_info.os_cfg.kern_mod[0]), file=config)
-    print('\t\t\t.bootargs = {0},'.format(vm_info.os_cfg.kern_args[0]), file=config)
-    if (vm_info.os_cfg.ramdisk_mod[0].strip()):
+        vm_info.os_cfg.kern_mod[vm_i]), file=config)
+    print('\t\t\t.bootargs = {0},'.format(vm_info.os_cfg.kern_args[vm_i]), file=config)
+    if (vm_info.os_cfg.ramdisk_mod[vm_i].strip()):
         print('\t\t\t.ramdisk_mod_tag = "{0}",'.format(
-            vm_info.os_cfg.ramdisk_mod[0]), file=config)
+            vm_info.os_cfg.ramdisk_mod[vm_i]), file=config)
     print("\t\t},", file=config)
     # VUART
-    err_dic = vuart_output(0, vm_info, config)
-    if err_dic:
-        return err_dic
-    # VM1
-    print("\t{", file=config)
-    print("\t\t.load_order = {0},".format(vm_info.load_order[1]), file=config)
-    # UUID
-    uuid_output(uuid_1, vm_info.uuid[1], config)
-    is_need_epc(vm_info.epc_section, 1, config)
-
-    vm1_id = 1
-    vm1_cpu_num = len(vm_info.cpus_per_vm[vm1_id])
-    print("\t\t.vcpu_num = {}U,".format(vm1_cpu_num), file=config)
-    print("\t\t.vcpu_affinity = VM{}_CONFIG_VCPU_AFFINITY,".format(vm1_id), file=config)
-    print("\t\t.severity = {0},".format(vm_info.severity[1].strip()), file=config)
-    # VUART
-    err_dic = vuart_output(1, vm_info, config)
+    err_dic = vuart_output(vm_type, vm_i, vm_info, config)
     if err_dic:
         return err_dic
 
-    # VM2
-    if scenario_cfg_lib.KATA_VM_COUNT == 1:
-        # Setup Kata vm configurations if more than 3 VMs in SDC config file
-        uuid_2 = uuid2str(vm_info.uuid[2])
-        print("#if CONFIG_MAX_KATA_VM_NUM > 0", file=config)
-        print("\t{", file=config)
-        print("\t\t.load_order = POST_LAUNCHED_VM,", file=config)
-        uuid_output(uuid_2, vm_info.uuid[2], config)
-        vcpu_affinity_output(vm_info, 2, config)
-        print("\t\t.severity = {0},".format(vm_info.severity[2].strip()), file=config)
-        is_need_epc(vm_info.epc_section, 2, config)
-        print("\t\t.vuart[0] = {", file=config)
-        print("\t\t\t.type = VUART_LEGACY_PIO,", file=config)
-        print("\t\t\t.addr.port_base = INVALID_COM_BASE,", file=config)
-        print("\t\t},", file=config)
-        print("\t\t.vuart[1] = {", file=config)
-        print("\t\t\t.type = VUART_LEGACY_PIO,", file=config)
-        print("\t\t\t.addr.port_base = INVALID_COM_BASE,", file=config)
-        print("\t\t}", file=config)
-        print("\t},", file=config)
-        print("#endif", file=config)
-
-    print("};", file=config)
-    return err_dic
-
-
-def gen_sdc2_source(vm_info, config):
-    """
-    Generate vm_configuration.c of sdc2 scenario
-    :param vm_info: it is the class which contain all user setting information
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    uuid_0 = uuid2str(vm_info.uuid[0])
-    uuid_1 = uuid2str(vm_info.uuid[1])
-    uuid_2 = uuid2str(vm_info.uuid[2])
-    uuid_3 = uuid2str(vm_info.uuid[3])
-
-    (err_dic, sos_guest_flags) = get_guest_flag(vm_info.guest_flag_idx[0])
-    if err_dic:
-        return err_dic
-
-    gen_source_header(config)
-
-    # VM0
-    print("struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM] = {", file=config)
-    print("\t{", file=config)
-    print("\t\t.load_order = {0},".format(
-        vm_info.load_order[0]), file=config)
-    print('\t\t.name = "{0}",'.format(vm_info.name[0]), file=config)
-    # UUID
-    uuid_output(uuid_0, vm_info.uuid[0], config)
-    print("", file=config)
-    print("\t\t/* Allow SOS to reboot the host since " +
-          "there is supposed to be the highest severity guest */", file=config)
-    print("\t\t.guest_flags = {0},".format(sos_guest_flags), file=config)
-    vcpu_affinity_output(vm_info, 0, config)
-    clos_output(vm_info, 0, config)
-    print("\t\t.severity = {0},".format(vm_info.severity[0].strip()), file=config)
-    print("\t\t.memory = {", file=config)
-    print("\t\t\t.start_hpa = {}UL,".format(vm_info.mem_info.mem_start_hpa[0]), file=config)
-    print("\t\t\t.size = {0},".format("CONFIG_SOS_RAM_SIZE"), file=config)
-    print("\t\t},", file=config)
-    print("\t\t.os_config = {", file=config)
-    print('\t\t\t.name = "{0}",'.format(vm_info.os_cfg.kern_name[0]), file=config)
-    print('\t\t\t.kernel_type = {0},'.format(vm_info.os_cfg.kern_type[0]), file=config)
-    print('\t\t\t.kernel_mod_tag = "{0}",'.format(
-        vm_info.os_cfg.kern_mod[0]), file=config)
-    print('\t\t\t.bootargs = {0},'.format(vm_info.os_cfg.kern_args[0]), file=config)
-    if (vm_info.os_cfg.ramdisk_mod[0].strip()):
-        print('\t\t\t.ramdisk_mod_tag = "{0}",'.format(
-            vm_info.os_cfg.ramdisk_mod[0]), file=config)
-    print("\t\t},", file=config)
-    # VUART
-    err_dic = vuart_output(0, vm_info, config)
-    if err_dic:
-        return err_dic
-
-    # VM1
-    print("\t{", file=config)
-    print("\t\t.load_order = {0},".format(vm_info.load_order[1]), file=config)
-    # UUID
-    uuid_output(uuid_1, vm_info.uuid[1], config)
-    vcpu_affinity_output(vm_info, 1, config)
-    print("\t\t.severity = {0},".format(vm_info.severity[1].strip()), file=config)
-    is_need_epc(vm_info.epc_section, 1, config)
-    # VUART
-    err_dic = vuart_output(1, vm_info, config)
-    if err_dic:
-        return err_dic
-
-    # VM2
-    print("\t{", file=config)
-    print("\t\t.load_order = {0},".format(vm_info.load_order[1]), file=config)
-    # UUID
-    uuid_output(uuid_2, vm_info.uuid[2], config)
-    vcpu_affinity_output(vm_info, 2, config)
-    print("\t\t.severity = {0},".format(vm_info.severity[2].strip()), file=config)
-    is_need_epc(vm_info.epc_section, 2, config)
-    # VUART
-    err_dic = vuart_output(1, vm_info, config)
-    if err_dic:
-        return err_dic
-    print("", file=config)
-
-    # VM3
-    print("\t{", file=config)
-    print("\t\t.load_order = POST_LAUNCHED_VM,", file=config)
-    uuid_output(uuid_3, vm_info.uuid[3], config)
-    is_need_epc(vm_info.epc_section, 3, config)
-    vcpu_affinity_output(vm_info, 3, config)
-    print("\t\t.severity = {0},".format(vm_info.severity[3].strip()), file=config)
-    print("\t\t.vuart[0] = {", file=config)
-    print("\t\t\t.type = VUART_LEGACY_PIO,", file=config)
-    print("\t\t\t.addr.port_base = INVALID_COM_BASE,", file=config)
-    print("\t\t},", file=config)
-    print("\t\t.vuart[1] = {", file=config)
-    print("\t\t\t.type = VUART_LEGACY_PIO,", file=config)
-    print("\t\t\t.addr.port_base = INVALID_COM_BASE,", file=config)
-    print("\t\t}", file=config)
     print("\t},", file=config)
-    print("};", file=config)
 
-    return err_dic
+
+def gen_pre_launch_vm(vm_type, vm_i, vm_info, config):
+
+    # guest flags
+    (err_dic, guest_flags) = get_guest_flag(vm_info.guest_flags[vm_i])
+    if err_dic:
+        return err_dic
+    uuid_str = uuid2str(vm_info.uuid[vm_i])
+
+    print("\t{{\t/* VM{} */".format(vm_i), file=config)
+    print("\t\t.load_order = {0},".format(vm_info.load_order[vm_i]), file=config)
+    print('\t\t.name = "{0}",'.format(vm_info.name[vm_i]), file=config)
+    # UUID
+    uuid_output(uuid_str, vm_info.uuid[vm_i], config)
+    vcpu_affinity_output(vm_info, vm_i, config)
+    if vm_i in vm_info.severity.keys():
+        print("\t\t.severity = {0},".format(vm_info.severity[vm_i].strip()), file=config)
+    if guest_flags:
+        print("\t\t.guest_flags = {0},".format(guest_flags), file=config)
+    clos_output(vm_info, vm_i, config)
+    print("\t\t.memory = {", file=config)
+    print("\t\t\t.start_hpa = VM{0}_CONFIG_MEM_START_HPA,".format(vm_i), file=config)
+    print("\t\t\t.size = VM{0}_CONFIG_MEM_SIZE,".format(vm_i), file=config)
+    print("\t\t\t.start_hpa2 = VM{0}_CONFIG_MEM_START_HPA2,".format(vm_i), file=config)
+    print("\t\t\t.size_hpa2 = VM{0}_CONFIG_MEM_SIZE_HPA2,".format(vm_i), file=config)
+    print("\t\t},", file=config)
+    is_need_epc(vm_info.epc_section, vm_i, config)
+    print("\t\t.os_config = {", file=config)
+    print('\t\t\t.name = "{0}",'.format(vm_info.os_cfg.kern_name[vm_i]), file=config)
+    print("\t\t\t.kernel_type = {0},".format(
+        vm_info.os_cfg.kern_type[vm_i]), file=config)
+    print('\t\t\t.kernel_mod_tag = "{0}",'.format(
+        vm_info.os_cfg.kern_mod[vm_i]), file=config)
+    if (vm_info.os_cfg.ramdisk_mod[vm_i].strip()):
+        print('\t\t\t.ramdisk_mod_tag = "{0}",'.format(
+            vm_info.os_cfg.ramdisk_mod[vm_i]), file=config)
+
+    if vm_i in vm_info.os_cfg.kern_load_addr.keys() and vm_info.os_cfg.kern_entry_addr[vm_i]:
+        print("\t\t\t.kernel_load_addr = {0},".format(vm_info.os_cfg.kern_load_addr[vm_i]), file=config)
+    if vm_i in vm_info.os_cfg.kern_entry_addr.keys() and vm_info.os_cfg.kern_entry_addr[vm_i]:
+        print("\t\t\t.kernel_entry_addr = {0},".format(vm_info.os_cfg.kern_entry_addr[vm_i]), file=config)
+
+    if vm_i in vm_info.os_cfg.kern_args.keys() and vm_info.os_cfg.kern_args[vm_i]:
+        print("\t\t\t.bootargs = VM{0}_CONFIG_OS_BOOTARG_CONSOLE\t\\".format(vm_i), file=config)
+        print("\t\t\t\tVM{0}_CONFIG_OS_BOOTARG_MAXCPUS\t\t\\".format(vm_i), file=config)
+        print("\t\t\t\tVM{0}_CONFIG_OS_BOOTARG_ROOT\t\t\\".format(vm_i), file=config)
+        split_cmdline(vm_info.os_cfg.kern_args[vm_i].strip(), config)
+    print("\t\t},", file=config)
+    # VUART
+    err_dic = vuart_output(vm_type, vm_i, vm_info, config)
+    if err_dic:
+        return err_dic
+
+    print("\t},", file=config)
+
+
+def gen_post_launch_vm(vm_type, vm_i, vm_info, config):
+
+    uuid_str = uuid2str(vm_info.uuid[vm_i])
+    print("\t{{\t/* VM{} */".format(vm_i), file=config)
+    print("\t\t.load_order = {0},".format(vm_info.load_order[vm_i]), file=config)
+    # UUID
+    uuid_output(uuid_str, vm_info.uuid[vm_i], config)
+    vcpu_affinity_output(vm_info, vm_i, config)
+    print("\t\t.severity = {0},".format(vm_info.severity[vm_i].strip()), file=config)
+    is_need_epc(vm_info.epc_section, vm_i, config)
+    # VUART
+    err_dic = vuart_output(vm_type, vm_i, vm_info, config)
+    if err_dic:
+        return err_dic
+
+    print("\t},", file=config)
 
 
 def split_cmdline(cmd_str, config):
@@ -458,233 +381,34 @@ def split_cmdline(cmd_str, config):
                 print('"', file=config)
 
 
+def pre_launch_definiation(vm_info, config):
 
-def gen_logical_partition_source(vm_info, config):
-    """
-    Generate vm_configuration.c of logical_partition scenario
-    :param vm_info: it is the class which contain all user setting information
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    err_dic = {}
-    gen_source_header(config)
-    for i in range(common.VM_COUNT):
+    for vm_i,vm_type in common.VM_TYPES.items():
+        if vm_type != "PRE_LAUNCHED_VM":
+            continue
         print("extern struct acrn_vm_pci_dev_config " +
-              "vm{0}_pci_devs[VM{1}_CONFIG_PCI_DEV_NUM];".format(i, i), file=config)
+              "vm{0}_pci_devs[VM{1}_CONFIG_PCI_DEV_NUM];".format(vm_i, vm_i), file=config)
     print("", file=config)
-    print("struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM] = {", file=config)
 
-    for i in range(common.VM_COUNT):
-        uuid = uuid2str(vm_info.uuid[i])
-        print("\t{{\t/* VM{0} */".format(i), file=config)
-        print("\t\t.load_order = {0},".format(vm_info.load_order[i]), file=config)
-        print('\t\t.name = "{0}",'.format(vm_info.name[i]), file=config)
-        # UUID
-        uuid_output(uuid, vm_info.uuid[i], config)
-        vcpu_affinity_output(vm_info, i, config)
-        # skip the vm0 for guest flag
-
-        # guest flags
-        (err_dic, guest_flags) = get_guest_flag(vm_info.guest_flag_idx[i])
-        if err_dic:
-            return err_dic
-
-        print("\t\t.guest_flags = {0},".format(guest_flags), file=config)
-        clos_output(vm_info, i, config)
-        print("\t\t.memory = {", file=config)
-        print("\t\t\t.start_hpa = VM{0}_CONFIG_MEM_START_HPA,".format(i), file=config)
-        print("\t\t\t.size = VM{0}_CONFIG_MEM_SIZE,".format(i), file=config)
-        print("\t\t\t.start_hpa2 = VM{0}_CONFIG_MEM_START_HPA2,".format(i), file=config)
-        print("\t\t\t.size_hpa2 = VM{0}_CONFIG_MEM_SIZE_HPA2,".format(i), file=config)
-        print("\t\t},", file=config)
-        is_need_epc(vm_info.epc_section, i, config)
-        print("\t\t.os_config = {", file=config)
-        print('\t\t\t.name = "{0}",'.format(vm_info.os_cfg.kern_name[i]), file=config)
-        print("\t\t\t.kernel_type = {0},".format(
-            vm_info.os_cfg.kern_type[i]), file=config)
-        print('\t\t\t.kernel_mod_tag = "{0}",'.format(
-            vm_info.os_cfg.kern_mod[i]), file=config)
-        if (vm_info.os_cfg.ramdisk_mod[i].strip()):
-            print('\t\t\t.ramdisk_mod_tag = "{0}",'.format(
-                vm_info.os_cfg.ramdisk_mod[i]), file=config)
-        print("\t\t\t.bootargs = VM{0}_CONFIG_OS_BOOTARG_CONSOLE\t\\".format(i), file=config)
-        print("\t\t\t\tVM{0}_CONFIG_OS_BOOTARG_MAXCPUS\t\t\\".format(i), file=config)
-        print("\t\t\t\tVM{0}_CONFIG_OS_BOOTARG_ROOT\t\t\\".format(i), file=config)
-        #print("\t\t\t\t{0}".format(vm_info.os_cfg.kern_args_append[i].strip()), file=config)
-        split_cmdline(vm_info.os_cfg.kern_args[i].strip(), config)
-        print("\t\t},", file=config)
-        # VUART
-        err_dic = vuart_output(i, vm_info, config)
-        if err_dic:
-            return err_dic
-
-    print("};", file=config)
-
-    return err_dic
-
-
-def gen_industry_source(vm_info, config):
-    """
-    Generate vm_configuration.c of industry scenario
-    :param vm_info: it is the class which contain all user setting information
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    err_dic = {}
-    gen_source_header(config)
-    print("struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM] = {", file=config)
-    for i in range(common.VM_COUNT):
-        uuid = uuid2str(vm_info.uuid[i])
-        print("\t{", file=config)
-        print("\t\t.load_order = {0},".format(vm_info.load_order[i]), file=config)
-        if i == 0:
-            print('\t\t.name = "{0}",'.format(vm_info.name[i]), file=config)
-
-        # UUID
-        uuid_output(uuid, vm_info.uuid[i], config)
-        is_need_epc(vm_info.epc_section, i, config)
-
-        if i == 0:
-            (err_dic, sos_guest_flags) = get_guest_flag(vm_info.guest_flag_idx[i])
-            if err_dic:
-                return err_dic
-            print("\t\t")
-            print("\t\t.guest_flags = {0},".format(sos_guest_flags), file=config)
-
-        vcpu_affinity_output(vm_info, i, config)
-        print("\t\t.severity = {0},".format(vm_info.severity[i].strip()), file=config)
-        clos_output(vm_info, i, config)
-
-        if i == 0:
-            print("\t\t.memory = {", file=config)
-            print("\t\t\t.start_hpa = 0UL,", file=config)
-            print("\t\t\t.size = CONFIG_SOS_RAM_SIZE,", file=config)
-            print("\t\t},", file=config)
-            print("\t\t.os_config = {", file=config)
-            print('\t\t\t.name = "{0}",'.format(vm_info.os_cfg.kern_name[i]), file=config)
-            print('\t\t\t.kernel_type = {0},'.format(
-                vm_info.os_cfg.kern_type[i]), file=config)
-            print('\t\t\t.kernel_mod_tag = "{0}",'.format(
-                vm_info.os_cfg.kern_mod[i]), file=config)
-            if (vm_info.os_cfg.ramdisk_mod[i].strip()):
-                print('\t\t\t.ramdisk_mod_tag = "{0}",'.format(
-                    vm_info.os_cfg.ramdisk_mod[i]), file=config)
-            print("\t\t\t.bootargs = {0}".format(
-               vm_info.os_cfg.kern_args[i]), file=config)
-            print("\t\t},", file=config)
-
-        if i == 2:
-            print("\t\t/* The hard RTVM must be launched as VM2 */", file=config)
-            (err_dic, vm_guest_flags) = get_guest_flag(vm_info.guest_flag_idx[i])
-            if err_dic:
-                return err_dic
-            print("\t\t.guest_flags = {0},".format(vm_guest_flags), file=config)
-        # VUART
-        err_dic = vuart_output(i, vm_info, config)
-        if err_dic:
-            return err_dic
-
-    print("};", file=config)
-
-    return err_dic
-
-
-def gen_hybrid_source(vm_info, config):
-    """
-    Generate vm_configuration.c of hybrid scenario
-    :param vm_info: it is the class which contain all user setting information
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    err_dic = {}
-    (err_dic, post_vm_i) = scenario_cfg_lib.get_first_post_vm()
-    if err_dic:
-        return err_dic
-
-    gen_source_header(config)
-    print("struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM] = {", file=config)
-
-    for i in range(common.VM_COUNT):
-        uuid = uuid2str(vm_info.uuid[i])
-        print("\t{{\t/* VM{0} */".format(i), file=config)
-        print("\t\t.load_order = {0},".format(vm_info.load_order[i]), file=config)
-        if i != 2:
-            print('\t\t.name = "{0}",'.format(vm_info.name[i]), file=config)
-
-        # UUID
-        uuid_output(uuid, vm_info.uuid[i], config)
-
-        if i != 2:
-            (err_dic, sos_guest_flags) = get_guest_flag(vm_info.guest_flag_idx[i])
-            if err_dic:
-                return err_dic
-            print("\t\t.guest_flags = {0},".format(sos_guest_flags), file=config)
-
-        vcpu_affinity_output(vm_info, i, config)
-        print("\t\t.severity = {0},".format(vm_info.severity[i].strip()), file=config)
-
-        if i != 2:
-            clos_output(vm_info, i, config)
-            print("\t\t.memory = {", file=config)
-            if i == 0:
-                print("\t\t\t.start_hpa = VM0_CONFIG_MEM_START_HPA,", file=config)
-                print("\t\t\t.size = VM0_CONFIG_MEM_SIZE,", file=config)
-                print("\t\t\t.start_hpa2 = VM0_CONFIG_MEM_START_HPA2,", file=config)
-                print("\t\t\t.size_hpa2 = VM0_CONFIG_MEM_SIZE_HPA2,", file=config)
-            elif i == 1:
-                print("\t\t\t.start_hpa = 0UL,", file=config)
-                print("\t\t\t.size = CONFIG_SOS_RAM_SIZE,", file=config)
-            print("\t\t},", file=config)
-            is_need_epc(vm_info.epc_section, i, config)
-            print("\t\t.os_config = {", file=config)
-            print('\t\t\t.name = "{0}",'.format(vm_info.os_cfg.kern_name[i]), file=config)
-            print('\t\t\t.kernel_type = {0},'.format(
-                vm_info.os_cfg.kern_type[i]), file=config)
-            print('\t\t\t.kernel_mod_tag = "{0}",'.format(
-                vm_info.os_cfg.kern_mod[i]), file=config)
-            if (vm_info.os_cfg.ramdisk_mod[i].strip()):
-                print('\t\t\t.ramdisk_mod_tag = "{0}",'.format(
-                vm_info.os_cfg.ramdisk_mod[i]), file=config)
-
-            if i < post_vm_i:
-                if not vm_info.os_cfg.kern_args[i] or not vm_info.os_cfg.kern_args[i].strip():
-                    print('\t\t\t.bootargs = "",', file=config)
-                else:
-                    print("\t\t\t.bootargs = {0},".format(
-                        vm_info.os_cfg.kern_args[i]), file=config)
-            if i == 0:
-                print("\t\t\t.kernel_load_addr = {0},".format(
-                    vm_info.os_cfg.kern_load_addr[i]), file=config)
-                print("\t\t\t.kernel_entry_addr = {0},".format(
-                    vm_info.os_cfg.kern_entry_addr[i]), file=config)
-
-            print("\t\t},", file=config)
-
-        # VUART
-        err_dic = vuart_output(i, vm_info, config)
-        if err_dic:
-            return err_dic
-    print("};", file=config)
-
-    return err_dic
-
-
-def generate_file(scenario, vm_info, config):
+def generate_file(vm_info, config):
     """
     Start to generate vm_configurations.c
     :param config: it is a file pointer of board information for writing to
     """
     err_dic = {}
-    if scenario == 'sdc':
-        err_dic = gen_sdc_source(vm_info, config)
-    elif scenario == 'sdc2':
-        err_dic = gen_sdc2_source(vm_info, config)
-    elif scenario == 'logical_partition':
-        err_dic = gen_logical_partition_source(vm_info, config)
-    elif scenario == 'industry':
-        err_dic = gen_industry_source(vm_info, config)
-    else:
-        # scenario is 'hybrid'
-        err_dic = gen_hybrid_source(vm_info, config)
+    gen_source_header(config)
+    if vm_info.load_order_cnt.pre_vm >= 2:
+        pre_launch_definiation(vm_info, config)
 
+    print("struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM] = {", file=config)
+    for vm_i, vm_type in common.VM_TYPES.items():
+
+        if vm_type == "SOS_VM":
+            gen_sos_vm(vm_type, vm_i, vm_info, config)
+        elif vm_type == "PRE_LAUNCHED_VM":
+            gen_pre_launch_vm(vm_type, vm_i, vm_info, config)
+        elif vm_type == "POST_LAUNCHED_VM":
+            gen_post_launch_vm(vm_type, vm_i, vm_info, config)
+
+    print("};", file=config)
     return err_dic
diff --git a/misc/acrn-config/scenario_config/vm_configurations_h.py b/misc/acrn-config/scenario_config/vm_configurations_h.py
index bfaf97a5e..ce77ab1e1 100644
--- a/misc/acrn-config/scenario_config/vm_configurations_h.py
+++ b/misc/acrn-config/scenario_config/vm_configurations_h.py
@@ -56,256 +56,104 @@ def clos_config_output(vm_info, i, config):
     clos_config = vm_info.get_clos_bitmap(i)
     print("#define VM{0}_VCPU_CLOS\t\t{1}".format(i, clos_config['clos_map']), file=config)
 
-def scenario_vm_num(load_type_cnt, config):
+def scenario_vm_num(scenario_items, config):
 
+    load_type_cnt = scenario_items['vm'].load_order_cnt
+    kata_vm_num = scenario_items['hv'].cap.max_kata_vm_num
     print("#define PRE_VM_NUM\t\t{}U".format(load_type_cnt.pre_vm), file=config)
     print("#define SOS_VM_NUM\t\t{}U".format(load_type_cnt.sos_vm), file=config)
     print("#define MAX_POST_VM_NUM\t\t{}U".format(load_type_cnt.post_vm), file=config)
-
-def gen_sdc_header(vm_info, config):
-    """
-    Generate vm_configuration.h of sdc scenario
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    gen_common_header(config)
-    print("#include <misc_cfg.h>\n", file=config)
-
-    scenario_vm_num(vm_info.load_order_cnt, config)
-    print("", file=config)
-    print("/* Bits mask of guest flags that can be programmed by device model." +
-          " Other bits are set by hypervisor only */", file=config)
-    print("#define DM_OWNED_GUEST_FLAG_MASK\t" +
-          "(GUEST_FLAG_SECURE_WORLD_ENABLED | GUEST_FLAG_LAPIC_PASSTHROUGH | \\\n" +
-          "\t\t\t\t\t\tGUEST_FLAG_RT | GUEST_FLAG_IO_COMPLETION_POLLING)", file=config)
-
-    print("", file=config)
-    print("#define SOS_VM_BOOTARGS\t\t\tSOS_ROOTFS\t\\", file=config)
-    print("\t\t\t\t\tSOS_CONSOLE\t\\", file=config)
-    print("\t\t\t\t\tSOS_BOOTARGS_DIFF", file=config)
-    print("", file=config)
-
-    # POST LAUNCHED VM
-    if scenario_cfg_lib.KATA_VM_COUNT == 1:
-        print("#if CONFIG_MAX_KATA_VM_NUM > 0", file=config)
-        # Set VM1 vcpu
-        cpu_affinity_output(vm_info, 1, config)
-        clos_config_output(vm_info, 1, config)
-        # KATA VM
-        cpu_affinity_output(vm_info, 2, config)
-        clos_config_output(vm_info, 2, config)
-        #else:
-        print("#else", file=config)
-        # Only two VMs in SDC config, setup vcpu affinity for VM1
-        cpu_affinity_output(vm_info, 1, config)
-        clos_config_output(vm_info, 1, config)
-        print("#endif", file=config)
-    else:
-        cpu_affinity_output(vm_info, 1, config)
-        clos_config_output(vm_info, 1, config)
-    print("", file=config)
-    print("{0}".format(VM_END_DEFINE), file=config)
+    print("#define CONFIG_MAX_KATA_VM_NUM\t\t{}U".format(kata_vm_num), file=config)
 
 
-def gen_sdc2_header(vm_info, config):
-    """
-    Generate vm_configuration.h of sdc2 scenario
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    gen_common_header(config)
-    print("#include <misc_cfg.h>\n", file=config)
-    scenario_vm_num(vm_info.load_order_cnt, config)
-    print("", file=config)
-    print("/* Bits mask of guest flags that can be programmed by device model." +
-          " Other bits are set by hypervisor only */", file=config)
-    print("#define DM_OWNED_GUEST_FLAG_MASK\t" +
-          "(GUEST_FLAG_SECURE_WORLD_ENABLED | GUEST_FLAG_LAPIC_PASSTHROUGH | \\\n" +
-          "\t\t\t\t\t\tGUEST_FLAG_RT | GUEST_FLAG_IO_COMPLETION_POLLING)", file=config)
+def gen_pre_launch_vm(vm_info, config):
 
-    print("", file=config)
-    print("#define SOS_VM_BOOTARGS\t\t\tSOS_ROOTFS\t\\", file=config)
-    print("\t\t\t\t\tSOS_CONSOLE\t\\", file=config)
-    print("\t\t\t\t\tSOS_BOOTARGS_DIFF", file=config)
+    vm_i = 0
+    for vm_type in common.VM_TYPES.values():
+        if vm_type != "PRE_LAUNCHED_VM":
+            vm_i += 1
+            continue
 
-    print("", file=config)
-    for i in range(common.VM_COUNT):
-        cpu_affinity_output(vm_info, i, config)
-        clos_config_output(vm_info, i, config)
-    print("", file=config)
-    print("{0}".format(VM_END_DEFINE), file=config)
-
-
-def logic_max_vm_num(vm_info, config):
-    """
-    This is logical max vm number comment
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    print("", file=config)
-    scenario_vm_num(vm_info.load_order_cnt, config)
-    print("", file=config)
-    print("/* The VM CONFIGs like:", file=config)
-    print(" *\tVMX_CONFIG_VCPU_AFFINITY", file=config)
-    print(" *\tVMX_CONFIG_MEM_START_HPA", file=config)
-    print(" *\tVMX_CONFIG_MEM_SIZE", file=config)
-    print(" *\tVMX_CONFIG_MEM_START_HPA2", file=config)
-    print(" *\tVMX_CONFIG_MEM_SIZE_HPA2", file=config)
-    print(" *\tVMX_CONFIG_OS_BOOTARG_ROOT", file=config)
-    print(" *\tVMX_CONFIG_OS_BOOTARG_MAX_CPUS", file=config)
-    print(" *\tVMX_CONFIG_OS_BOOTARG_CONSOLE", file=config)
-    print(" * might be different on your board, please modify them per your needs.", file=config)
-    print(" */", file=config)
-    print("", file=config)
-
-
-def gen_logical_partition_header(vm_info, config):
-    """
-    Generate vm_configuration.h of logical_partition scenario
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    gen_common_header(config)
-    # map all the needed pci sub class
-    print("#include <pci_devices.h>", file=config)
-    print("#include <misc_cfg.h>", file=config)
-    print("", file=config)
-    print("/* Bits mask of guest flags that can be programmed by device model." +
-          " Other bits are set by hypervisor only */", file=config)
-    print("#define DM_OWNED_GUEST_FLAG_MASK\t0UL", file=config)
-
-    logic_max_vm_num(vm_info, config)
-
-    for i in range(common.VM_COUNT):
-
-        cpu_bits = vm_info.get_cpu_bitmap(i)
-        cpu_affinity_output(vm_info, i, config)
-        clos_config_output(vm_info, i, config)
+        cpu_bits = vm_info.get_cpu_bitmap(vm_i)
+        cpu_affinity_output(vm_info, vm_i, config)
+        clos_config_output(vm_info, vm_i, config)
         print("#define VM{0}_CONFIG_MEM_START_HPA\t\t{1}UL".format(
-            i, vm_info.mem_info.mem_start_hpa[i]), file=config)
+            vm_i, vm_info.mem_info.mem_start_hpa[vm_i]), file=config)
         print("#define VM{0}_CONFIG_MEM_SIZE\t\t\t{1}UL".format(
-            i, vm_info.mem_info.mem_size[i]), file=config)
-        print("#define VM{0}_CONFIG_MEM_START_HPA2\t\t{1}UL".format(
-            i, vm_info.mem_info.mem_start_hpa2[i]), file=config)
-        print("#define VM{0}_CONFIG_MEM_SIZE_HPA2\t\t{1}UL".format(
-            i, vm_info.mem_info.mem_size_hpa2[i]), file=config)
-        print('#define VM{0}_CONFIG_OS_BOOTARG_ROOT\t\t"root={1} "'.format(
-            i, vm_info.os_cfg.kern_root_dev[i]), file=config)
-        print('#define VM{0}_CONFIG_OS_BOOTARG_MAXCPUS\t\t"maxcpus={1} "'.format(
-            i, cpu_bits['cpu_num']), file=config)
-        print('#define VM{0}_CONFIG_OS_BOOTARG_CONSOLE\t\t"console={1} "'.format(
-            i, vm_info.os_cfg.kern_console.strip('/dev/')), file=config)
+            vm_i, vm_info.mem_info.mem_size[vm_i]), file=config)
+        if vm_info.mem_info.mem_start_hpa2[vm_i] not in (None, ''):
+            print("#define VM{0}_CONFIG_MEM_START_HPA2\t\t{1}UL".format(
+                vm_i, vm_info.mem_info.mem_start_hpa2[vm_i]), file=config)
+            print("#define VM{0}_CONFIG_MEM_SIZE_HPA2\t\t{1}UL".format(
+                vm_i, vm_info.mem_info.mem_size_hpa2[vm_i]), file=config)
+        if vm_info.os_cfg.kern_root_dev:
+            print('#define VM{0}_CONFIG_OS_BOOTARG_ROOT\t\t"root={1} "'.format(
+                vm_i, vm_info.os_cfg.kern_root_dev[vm_i]), file=config)
+
+        print('#define VM{0}_CONFIG_OS_BOOTARG_MAXCPUS\t\t"maxcpus={1} "'.format(vm_i, cpu_bits['cpu_num']), file=config)
+        if vm_info.os_cfg.kern_console:
+            print('#define VM{0}_CONFIG_OS_BOOTARG_CONSOLE\t\t"console={1} "'.format(vm_i, vm_info.os_cfg.kern_console.strip('/dev/')), file=config)
         print("", file=config)
-
-    print('/* VM pass-through devices assign policy:', file=config)
-    print(' * VM0: one Mass Storage controller, one Network controller;', file=config)
-    print(' * VM1: one Mass Storage controller, one Network controller' +
-          '(if a secondary Network controller class device exist);', file=config)
-    print(' */', file=config)
-    print('#define VM0_STORAGE_CONTROLLER\t\t\tSATA_CONTROLLER_0', file=config)
-    print('#define VM0_NETWORK_CONTROLLER\t\t\tETHERNET_CONTROLLER_0', file=config)
-    print('#define VM0_CONFIG_PCI_DEV_NUM\t\t\t3U', file=config)
-    print('', file=config)
-    print('#define VM1_STORAGE_CONTROLLER\t\t\tUSB_CONTROLLER_0', file=config)
-    print('#if defined(ETHERNET_CONTROLLER_1)', file=config)
-    print('/* if a secondary Ethernet controller subclass exist, assign to VM1 */', file=config)
-    print('#define VM1_NETWORK_CONTROLLER\t\t\tETHERNET_CONTROLLER_1', file=config)
-    print('#elif defined(NETWORK_CONTROLLER_0)', file=config)
-    print('/* if a Network controller subclass exist' +
-          '(usually it is a wireless network card), assign to VM1 */', file=config)
-    print('#define VM1_NETWORK_CONTROLLER\t\t\tNETWORK_CONTROLLER_0', file=config)
-    print('#endif', file=config)
-    print('', file=config)
-    print('#if defined(VM1_NETWORK_CONTROLLER)', file=config)
-    print('#define VM1_CONFIG_PCI_DEV_NUM\t\t\t3U', file=config)
-    print('#else', file=config)
-    print('/* no network controller could be assigned to VM1 */', file=config)
-    print('#define VM1_CONFIG_PCI_DEV_NUM\t\t\t2U', file=config)
-    print('#endif', file=config)
-    print("", file=config)
-    print("{0}".format(VM_END_DEFINE), file=config)
+        vm_i += 1
 
 
-def gen_industry_header(vm_info, config):
-    """
-    Generate vm_configuration.h of industry scenario
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    gen_common_header(config)
-    print("#include <misc_cfg.h>", file=config)
-    print("", file=config)
-    scenario_vm_num(vm_info.load_order_cnt, config)
-    print("", file=config)
-    print("/* Bits mask of guest flags that can be programmed by device model." +
-          " Other bits are set by hypervisor only */", file=config)
-    print("#define DM_OWNED_GUEST_FLAG_MASK\t(GUEST_FLAG_SECURE_WORLD_ENABLED | " +
-          "GUEST_FLAG_LAPIC_PASSTHROUGH | \\", file=config)
-    print("\t\t\t\t\t\tGUEST_FLAG_RT | GUEST_FLAG_IO_COMPLETION_POLLING)", file=config)
-    print("", file=config)
-    print("#define SOS_VM_BOOTARGS\t\t\tSOS_ROOTFS\t\\", file=config)
-    print("\t\t\t\t\tSOS_CONSOLE\t\\", file=config)
-    print("\t\t\t\t\tSOS_BOOTARGS_DIFF", file=config)
-    print("", file=config)
-    for i in range(common.VM_COUNT):
-        cpu_affinity_output(vm_info, i, config)
-        clos_config_output(vm_info, i, config)
-    print("", file=config)
-    print("{0}".format(VM_END_DEFINE), file=config)
+def gen_post_launch_header(vm_info, config):
+    vm_i = 0
+    for vm_type in common.VM_TYPES.values():
+        if vm_type != "POST_LAUNCHED_VM":
+            vm_i += 1
+            continue
+        cpu_affinity_output(vm_info, vm_i, config)
+        clos_config_output(vm_info, vm_i, config)
+        vm_i += 1
 
+def gen_sos_header(vm_info, config):
 
-def gen_hybrid_header(vm_info, config):
-    """
-    Generate vm_configuration.h of hybrid scenario
-    :param vm_info: it is the class which contain all user setting information
-    :param config: it is the pointer which file write to
-    :return: None
-    """
-    gen_common_header(config)
-    print("#include <misc_cfg.h>\n", file=config)
-    print("/* Bits mask of guest flags that can be programmed by device model." +
-          " Other bits are set by hypervisor only */", file=config)
-    print("#define DM_OWNED_GUEST_FLAG_MASK\t" +
-          "(GUEST_FLAG_SECURE_WORLD_ENABLED | GUEST_FLAG_LAPIC_PASSTHROUGH | \\\n" +
-          "\t\t\t\t\t\tGUEST_FLAG_RT | GUEST_FLAG_IO_COMPLETION_POLLING)", file=config)
-
-    print("", file=config)
-    scenario_vm_num(vm_info.load_order_cnt, config)
-    print("", file=config)
-    for i in range(common.VM_COUNT):
-        cpu_affinity_output(vm_info, i, config)
-        clos_config_output(vm_info, i, config)
-
-    print("#define VM0_CONFIG_MEM_START_HPA\t{0}UL".format(
-        vm_info.mem_info.mem_start_hpa[0]), file=config)
-    print("#define VM0_CONFIG_MEM_SIZE\t\t{0}UL".format(vm_info.mem_info.mem_size[0]), file=config)
-    print("#define VM0_CONFIG_MEM_START_HPA2\t{0}UL".format(
-        vm_info.mem_info.mem_start_hpa2[0]), file=config)
-    print("#define VM0_CONFIG_MEM_SIZE_HPA2\t{0}UL".format(vm_info.mem_info.mem_size_hpa2[0]), file=config)
+    if 'SOS_VM' not in common.VM_TYPES.values():
+        return
     print("", file=config)
     print("#define SOS_VM_BOOTARGS\t\t\tSOS_ROOTFS\t\\", file=config)
     print("\t\t\t\t\tSOS_CONSOLE\t\\", file=config)
     print("\t\t\t\t\tSOS_BOOTARGS_DIFF", file=config)
 
+
+def gen_header_file(vm_info, config):
+
+    gen_post_launch_header(vm_info, config)
+    gen_pre_launch_vm(vm_info, config)
+    gen_sos_header(vm_info, config)
+
+
+def get_dm_owned_guest_flag_mask(vm_info, config):
+
+    if vm_info.load_order_cnt.pre_vm >= 2:
+        print("#define DM_OWNED_GUEST_FLAG_MASK\t0UL", file=config)
+    else:
+        print("/* Bits mask of guest flags that can be programmed by device model." +
+              " Other bits are set by hypervisor only */", file=config)
+        print("#define DM_OWNED_GUEST_FLAG_MASK\t" +
+              "(GUEST_FLAG_SECURE_WORLD_ENABLED | GUEST_FLAG_LAPIC_PASSTHROUGH | \\\n" +
+              "\t\t\t\t\t\tGUEST_FLAG_RT | GUEST_FLAG_IO_COMPLETION_POLLING)", file=config)
+
     print("", file=config)
-    print("{0}".format(VM_END_DEFINE), file=config)
 
 
-def generate_file(scenario, vm_info, config):
+def generate_file(scenario_items, config):
     """
     Start to generate vm_configurations.h
-    :param scenario: it is scenario name
-    :param vm_info: it is the class which contain all user setting information
+    :param scenario_items: it is the class which contain all user setting information
     :param config: it is a file pointer of board information for writing to
     """
-    if scenario == 'sdc':
-        gen_sdc_header(vm_info, config)
-    elif scenario == 'sdc2':
-        gen_sdc2_header(vm_info, config)
-    elif scenario == 'logical_partition':
-        gen_logical_partition_header(vm_info, config)
-    elif scenario == 'industry':
-        gen_industry_header(vm_info, config)
-    else:
-        # scenario is 'hybrid'
-        gen_hybrid_header(vm_info, config)
+    vm_info = scenario_items['vm']
+    gen_common_header(config)
+
+    print("#include <misc_cfg.h>\n", file=config)
+    if 'PRE_LAUNCHED_VM' in common.VM_TYPES.values():
+        print("#include <pci_devices.h>", file=config)
+    get_dm_owned_guest_flag_mask(vm_info, config)
+    scenario_vm_num(scenario_items, config)
+    print("", file=config)
+
+    gen_header_file(vm_info, config)
+    print("", file=config)
+    print("{0}".format(VM_END_DEFINE), file=config)