src/dev/arm/VExpressFastmodel.py

# Copyright 2019 Google, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

from m5.objects.FastModelGIC import FastModelGIC, SCFastModelGIC
from m5.objects.Gic import ArmSPI
from m5.objects.RealView import VExpress_GEM5_Base, HDLcd
from m5.objects.SubSystem import SubSystem

class VExpressFastmodel(VExpress_GEM5_Base):
    gic = FastModelGIC(
        sc_gic=SCFastModelGIC(
            reg_base=0x2c000000,
            reg_base_per_redistributor="0.0.0.0=0x2c010000",
            spi_count=988,
        ))

    hdlcd = HDLcd(
        pxl_clk=VExpress_GEM5_Base.dcc.osc_pxl, pio_addr=0x2b000000,
        interrupt=ArmSPI(num=95))

    # Remove original timer to prevent from possible conflict with Fastmodel
    # timer.
    generic_timer = SubSystem()
    generic_timer_mem = SubSystem()
    sys_counter = SubSystem()

    def _on_chip_devices(self):
        return [
            self.gic,
            self.hdlcd,
            self.system_watchdog,
            self.trusted_watchdog,
        ]

    def setupBootLoader(self, cur_sys, loc, boot_loader=None):
        if boot_loader is None:
            boot_loader = [ loc('boot_v2.arm64') ]
        super().setupBootLoader(cur_sys, boot_loader)