93 lines
2.0 KiB
C++
93 lines
2.0 KiB
C++
/*!
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\file Memory.h
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\brief Basic TLM-2 memory model
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\author Màrius Montón
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\date August 2018
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*/
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// SPDX-License-Identifier: GPL-3.0-or-later
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#ifndef __MEMORY_H__
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#define __MEMORY_H__
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#include <iostream>
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#include <fstream>
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#define SC_INCLUDE_DYNAMIC_PROCESSES
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#include "systemc"
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#include "tlm.h"
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#include "tlm_utils/simple_target_socket.h"
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#include "spdlog/spdlog.h"
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#include "spdlog/sinks/basic_file_sink.h"
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/**
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* @brief Basic TLM-2 memory
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*/
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class Memory: sc_core::sc_module {
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public:
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// TLM-2 socket, defaults to 32-bits wide, base protocol
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tlm_utils::simple_target_socket<Memory> socket;
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/* 16 MBytes */
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enum {
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SIZE = 0x1000000
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};
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const sc_core::sc_time LATENCY;
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Memory(sc_core::sc_module_name const &name, std::string const &filename);
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explicit Memory(const sc_core::sc_module_name& name);
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~Memory() override;
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/**
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* @brief Returns Program Counter read from hexfile
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* @return Initial PC
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*/
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virtual std::uint32_t getPCfromHEX();
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// TLM-2 blocking transport method
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virtual void b_transport(tlm::tlm_generic_payload &trans,
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sc_core::sc_time &delay);
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// *********************************************
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// TLM-2 forward DMI method
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// *********************************************
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virtual bool get_direct_mem_ptr(tlm::tlm_generic_payload &trans,
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tlm::tlm_dmi &dmi_data);
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// *********************************************
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// TLM-2 debug transport method
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// *********************************************
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virtual unsigned int transport_dbg(tlm::tlm_generic_payload &trans);
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private:
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/**
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* @brief Memory array in bytes
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*/
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std::array<uint8_t, Memory::SIZE> mem{};
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/**
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* @brief Log class
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*/
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std::shared_ptr<spdlog::logger> logger;
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/**
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* @brief Program counter (PC) read from hex file
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*/
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std::uint32_t program_counter;
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/**
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* @brief DMI can be used?
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*/
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bool dmi_allowed;
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/**
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* @brief Read Intel hex file
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* @param filename file name to read
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*/
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void readHexFile(const std::string& filename);
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};
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#endif /* __MEMORY_H__ */
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