1 // 2 // Copyright (c) 2010-2024 Antmicro 3 // 4 // This file is licensed under the MIT License. 5 // Full license text is available in 'licenses/MIT.txt'. 6 // 7 8 using System.Linq; 9 using System.Text; 10 using Antmicro.Renode.Core; 11 using Antmicro.Renode.Logging; 12 using Antmicro.Renode.Peripherals.Bus; 13 14 namespace Antmicro.Renode.Peripherals.CPU 15 { 16 public class SampleStateAwarePeripheral : IDoubleWordPeripheral, IKnownSize 17 { SampleStateAwarePeripheral(IMachine machine, long size)18 public SampleStateAwarePeripheral(IMachine machine, long size) 19 { 20 this.size = size; 21 sysbus = machine.GetSystemBus(this); 22 } 23 Reset()24 public void Reset() 25 { 26 } 27 ReadDoubleWord(long offset)28 public uint ReadDoubleWord(long offset) 29 { 30 if(!sysbus.TryGetCurrentContextState<CortexM.ContextState>(out var initiator, out var cpuState)) 31 { 32 this.WarningLog("No context"); 33 return 0; 34 } 35 var peripheralName = initiator.GetName().Split('.')[1]; 36 bool privileged = (bool)cpuState.Privileged, cpuSecure = (bool)cpuState.CpuSecure, attributionSecure = (bool)cpuState.AttributionSecure; 37 this.WarningLog("Read from context: {0} state.Privileged: {1}, state.CpuSecure: {2}, state.AttributionSecure: {3}", peripheralName, privileged, cpuSecure, attributionSecure); 38 var peripheralNameBytes = Encoding.UTF8.GetBytes(peripheralName).Take(3).Aggregate(0U, (v, b) => (v << 8) | b); 39 return (peripheralNameBytes << 8) | ((privileged ? 1u : 0) << 0) | ((cpuSecure ? 1u : 0) << 1) | ((attributionSecure ? 1u : 0) << 2); 40 } 41 WriteDoubleWord(long offset, uint value)42 public void WriteDoubleWord(long offset, uint value) 43 { 44 } 45 46 public long Size => size; 47 48 private readonly long size; 49 private readonly IBusController sysbus; 50 } 51 } 52
