68 lines
2.8 KiB
Python
68 lines
2.8 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (C) 2021-2022 Intel Corporation.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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import sys, os
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sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'library'))
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import argparse
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import lxml.etree
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import acrn_config_utilities
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from acrn_config_utilities import get_node
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#vuart devices name is configured to start from /dev/ttyS8
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START_VUART_DEV_NAME_NO = 8
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VUART_DEV_NAME_NUM = 8
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stadard_uart_port = {'0x3F8', '0x2F8', '0x3E8', '0x2E8'}
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UART_IRQ_BAUD = " irq 0 uart 16550A baud_base 115200"
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def find_non_standard_uart(vm, scenario_etree, allocation_etree):
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uart_list = []
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vmname = get_node("./name/text()", vm)
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connection_list0 = scenario_etree.xpath(f"//vuart_connection[endpoint/vm_name = '{vmname}']")
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connection_list1 = allocation_etree.xpath(f"//vuart_connection[endpoint/vm_name = '{vmname}']")
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for connection in (connection_list0 + connection_list1):
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type = get_node(f"./type/text()", connection)
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if (type != "legacy") :
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continue
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port = get_node(f".//endpoint[vm_name = '{vmname}']/io_port/text()", connection)
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if port not in stadard_uart_port:
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target_vm_name = get_node(f".//endpoint[vm_name != '{vmname}']/vm_name/text()", connection)
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target_vm_id = get_node(f"//vm[name = '{target_vm_name}']/@id", scenario_etree)
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uart_list.append({"io_port" : port, "target_vm_id" : target_vm_id})
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return uart_list
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def main(args):
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"""
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Generate serial configuration file for service VM
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:param args: command line args
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"""
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scenario_etree = lxml.etree.parse(args.scenario)
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allocation_etree = lxml.etree.parse(args.allocation)
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vuart_target_vmid = {}
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vm_list = scenario_etree.xpath("//vm[load_order = 'SERVICE_VM']")
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for vm in vm_list:
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vuart_list = find_non_standard_uart(vm, scenario_etree, allocation_etree)
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vmname = get_node("./name/text()", vm)
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if len(vuart_list) != 0:
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with open(args.out, "w+") as config_f:
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for uart_start_num, vuart in enumerate(vuart_list, start=START_VUART_DEV_NAME_NO):
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base = " port " + vuart["io_port"]
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vm_id_note = "# User_VM_id: " + str(vuart["target_vm_id"])+ '\n'
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config_f.write(vm_id_note)
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conf = "/dev/ttyS" + str(uart_start_num) + base + UART_IRQ_BAUD + '\n'
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config_f.write(conf)
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument("--allocation", help="the XML file summarizing resource allocated by config tool")
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parser.add_argument("--scenario", help="the XML file specifying the scenario to be set up")
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parser.add_argument("--out", help="location of the output serial configuration file")
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args = parser.parse_args()
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main(args)
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