100 lines
3.5 KiB
Python
100 lines
3.5 KiB
Python
# Copyright (c) 2017 Linaro Limited.
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#
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# SPDX-License-Identifier: Apache-2.0
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'''Runner for NIOS II, based on quartus-flash.py and GDB.'''
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from west import log
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from runners.core import ZephyrBinaryRunner, NetworkPortHelper
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class Nios2BinaryRunner(ZephyrBinaryRunner):
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'''Runner front-end for NIOS II.'''
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# From the original shell script:
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#
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# "XXX [flash] only support[s] cases where the .elf is sent
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# over the JTAG and the CPU directly boots from __start. CONFIG_XIP
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# and CONFIG_INCLUDE_RESET_VECTOR must be disabled."
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def __init__(self, cfg, quartus_py=None, cpu_sof=None, tui=False):
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super(Nios2BinaryRunner, self).__init__(cfg)
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self.hex_name = cfg.hex_file
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self.elf_name = cfg.elf_file
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self.cpu_sof = cpu_sof
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self.quartus_py = quartus_py
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self.gdb_cmd = [cfg.gdb] if cfg.gdb else None
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self.tui_arg = ['-tui'] if tui else []
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@classmethod
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def name(cls):
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return 'nios2'
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@classmethod
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def do_add_parser(cls, parser):
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# TODO merge quartus-flash.py script into this file.
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parser.add_argument('--quartus-flash', required=True)
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parser.add_argument('--cpu-sof', required=True,
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help='path to the the CPU .sof data')
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parser.add_argument('--tui', default=False, action='store_true',
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help='if given, GDB uses -tui')
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@classmethod
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def create(cls, cfg, args):
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return Nios2BinaryRunner(cfg,
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quartus_py=args.quartus_flash,
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cpu_sof=args.cpu_sof,
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tui=args.tui)
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def do_run(self, command, **kwargs):
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if command == 'flash':
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self.flash(**kwargs)
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else:
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self.debug_debugserver(command, **kwargs)
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def flash(self, **kwargs):
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if self.quartus_py is None:
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raise ValueError('Cannot flash; --quartus-flash not given.')
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if self.cpu_sof is None:
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raise ValueError('Cannot flash; --cpu-sof not given.')
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cmd = [self.quartus_py,
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'--sof', self.cpu_sof,
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'--kernel', self.hex_name]
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self.check_call(cmd)
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def print_gdbserver_message(self, gdb_port):
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log.inf('Nios II GDB server running on port {}'.format(gdb_port))
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def debug_debugserver(self, command, **kwargs):
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# Per comments in the shell script, the NIOSII GDB server
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# doesn't exit gracefully, so it's better to explicitly search
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# for an unused port. The script picks a random value in
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# between 1024 and 49151, but we'll start with the
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# "traditional" 3333 choice.
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gdb_start = 3333
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nh = NetworkPortHelper()
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gdb_port = nh.get_unused_ports([gdb_start])[0]
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server_cmd = (['nios2-gdb-server',
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'--tcpport', str(gdb_port),
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'--stop', '--reset-target'])
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if command == 'debugserver':
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self.print_gdbserver_message(gdb_port)
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self.check_call(server_cmd)
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else:
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if self.elf_name is None:
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raise ValueError('Cannot debug; elf is missing')
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if self.gdb_cmd is None:
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raise ValueError('Cannot debug; no gdb specified')
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gdb_cmd = (self.gdb_cmd +
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self.tui_arg +
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[self.elf_name,
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'-ex', 'target remote :{}'.format(gdb_port)])
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self.print_gdbserver_message(gdb_port)
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self.run_server_and_client(server_cmd, gdb_cmd)
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