acrn-config: add support for P2SB bridge passthrough

This patch is to support direct assignment of P2SB bridge to one pre-launched
VM for EHL. User can configure this per-VM attribute in scenario xml:
    <mmio_resources desc="MMIO resources.">
         <p2sb>y</p2sb>
    </mmio_resources>

Set p2sb to y to passthru P2SB bridge to VM, and n otherwise.

Tracked-On: #5221
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>

misc/acrn-config/scenario_config/scenario_cfg_gen.py

@@ -52,6 +52,7 @@ def get_scenario_item_values(board_info, scenario_info):
     scenario_item_values["vm,clos,vcpu_clos"] = hw_info.get_clos_val()
     scenario_item_values["vm,pci_devs"] = scenario_cfg_lib.avl_pci_devs()
     scenario_item_values["vm,os_config,kern_type"] = scenario_cfg_lib.KERN_TYPE_LIST
+    scenario_item_values["vm,mmio_resources,p2sb"] = hv_cfg_lib.N_Y
     scenario_item_values.update(scenario_cfg_lib.avl_vuart_ui_select(scenario_info))
 
     # board

misc/acrn-config/scenario_config/scenario_item.py

@@ -272,6 +272,29 @@ class LoadOrderNum:
         self.sos_vm = scenario_cfg_lib.get_load_vm_cnt(load_vm, "SOS_VM")
         self.post_vm = scenario_cfg_lib.get_load_vm_cnt(load_vm, "POST_LAUNCHED_VM")
 
+
+class MmioResourcesInfo:
+    """ This is Abstract of class of mmio resource setting information """
+    p2sb = False
+
+    def __init__(self, scenario_file):
+        self.scenario_info = scenario_file
+
+    def get_info(self):
+        """
+        Get all items which belong to this class
+        :return: None
+        """
+        self.p2sb = common.get_leaf_tag_map_bool(self.scenario_info, "mmio_resources", "p2sb")
+
+    def check_item(self):
+        """
+        Check all items in this class
+        :return: None
+        """
+        scenario_cfg_lib.check_p2sb(self.p2sb)
+
+
 class VmInfo:
     """ This is Abstract of class of VM setting """
     name = {}
@@ -292,6 +315,8 @@ class VmInfo:
         self.cfg_pci = CfgPci(self.scenario_info)
         self.load_order_cnt = LoadOrderNum()
         self.shmem = ShareMem(self.scenario_info)
+        self.mmio_resource_info = MmioResourcesInfo(self.scenario_info)
+
 
     def get_info(self):
         """
@@ -313,6 +338,7 @@ class VmInfo:
         self.vuart.get_info()
         self.cfg_pci.get_info()
         self.load_order_cnt.get_info(self.load_vm)
+        self.mmio_resource_info.get_info()
 
     def set_ivshmem(self, ivshmem_regions):
         """
@@ -352,4 +378,5 @@ class VmInfo:
         self.cfg_pci.check_item()
         self.vuart.check_item()
         self.shmem.check_items()
+        self.mmio_resource_info.check_item()
         scenario_cfg_lib.ERR_LIST.update(err_dic)

misc/acrn-config/scenario_config/vm_configurations_c.py

@@ -357,6 +357,19 @@ def gen_pre_launch_vm(vm_type, vm_i, scenario_items, config):
         print("\t\t\t.size = VM0_TPM_BUFFER_SIZE,", file=config)
         print("\t\t},", file=config)
         print("#endif", file=config)
+
+    if (vm_i == 0 and vm_info.mmio_resource_info.p2sb.get(vm_i) is not None
+        and vm_info.mmio_resource_info.p2sb[vm_i]):
+        print("#ifdef P2SB_BAR_ADDR", file=config)
+        print("\t\t.pt_p2sb_bar = true,", file=config)
+        print("\t\t.mmiodevs[0] = {", file=config)
+        gpa = common.hpa2gpa(0, board_cfg_lib.find_p2sb_bar_addr(), 0x1000000)
+        print("\t\t\t.base_gpa = 0x{:X}UL,".format(gpa), file=config)
+        print("\t\t\t.base_hpa = P2SB_BAR_ADDR,", file=config)
+        print("\t\t\t.size = 0x1000000UL,", file=config)
+        print("\t\t},", file=config)
+        print("#endif", file=config)
+
     print("\t},", file=config)