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https://github.com/projectacrn/acrn-hypervisor.git
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8e7a1ac7a0
The Service VM needs a 'serial.conf' file to recognize and use non-standard vUART with the 'setserial' package. The logic of create serial.conf should update after we move vUART connection to global and use endpoint to replace the target VM id. This patch select the new vUART connection and check whether one of the endpoint is Service VM, if yes, then check the io_port and record it when the vUART is non-standard. All these non-standard vUART will be written to the serial.conf. Tracked-On: #6690 Reviewed-by: Junjie Mao junjie.mao@intel.com Signed-off-by: Chenli Wei <chenli.wei@intel.com>
76 lines
3.1 KiB
Python
76 lines
3.1 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (C) 2021 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 common
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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):
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uart_list = []
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vmname = common.get_node("./name/text()", vm)
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connection_list = scenario_etree.xpath(f"//vuart_connection[endpoint/vm_name = '{vmname}']")
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for connection in connection_list:
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type = common.get_node(f"./type/text()", connection)
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if (type != "legacy") :
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continue
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port = common.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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uart_list.append(connection)
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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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vmname = common.get_node("./name/text()", vm)
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for connection in scenario_etree.xpath(f"//vuart_connection[endpoint/vm_name = '{vmname}']"):
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vm_name = common.get_node(f".//endpoint[vm_name != '{vmname}']/vm_name/text()", connection)
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for target_vm in scenario_etree.xpath(f"//vm[name = '{vm_name}']"):
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vuart_target_vmid[connection.find('name').text] = target_vm.attrib["id"]
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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)
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vmname = common.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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port = common.get_node(f".//endpoint[vm_name = '{vmname}']/io_port/text()", vuart)
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base = " port " + str(port)
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connection_name = vuart.find('name').text
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vm_id_note = "# User_VM_id: " + str(vuart_target_vmid[connection_name]) + '\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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