235 lines
7.3 KiB
C++
235 lines
7.3 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-20 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** @file Factory for creating different machines.
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Author: Max Poliakovski
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*/
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#include "machinefactory.h"
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#include "devices/memctrlbase.h"
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#include "memreadwrite.h"
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#include "machineproperties.h"
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#include <cinttypes>
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#include <cstring>
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#include <fstream>
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#include <iostream>
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#include <map>
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#include <thirdparty/loguru/loguru.hpp>
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using namespace std;
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/**
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Power Macintosh ROM identification map.
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Maps Bootstrap string located at offset 0x30D064 (PCI Macs)
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or 0x30C064 (Nubus Macs) to machine name and description.
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*/
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static const map<uint32_t, std::tuple<string, const char*>> rom_identity = {
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{0x416C6368, {"pm6400", "Performa 6400"}}, // Alchemy
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//{"Come", "PowerBook 2400"}, // Comet
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{0x436F7264, {"pm5200", "Power Mac 5200/6200 series"}}, // Cordyceps
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{0x47617A65, {"pm6500", "Power Mac 6500"}}, // Gazelle
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{0x476F7373, {"pmg3", "Power Mac G3 Beige"}}, // Gossamer
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{0x47525820, {"pbg3", "PowerBook G3 Wallstreet"}},
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//{"Hoop", "PowerBook 3400"}, // Hooper
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{0x50425820, {"pb-preg3", "PowerBook Pre-G3"}},
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{0x50444D20, {"pm6100", "Nubus Power Mac"}}, // Piltdown Man (6100/7100/8100)
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{0x50697020, {"pippin", "Bandai Pippin"}}, // Pippin
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//{"Powe", "Generic Power Mac"}, // PowerMac?
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//{"Spar", "20th Anniversay Mac"}, // Spartacus
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{0x544E5420, {"pm7200", "Power Mac 7xxxx/8xxx series"}}, // Trinitrotoluene :-)
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{0x5A616E7A, {"pm4400", "Power Mac 4400/7220"}}, // Zanzibar
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};
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typedef std::map<std::string, StrProperty> Settings;
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static const Settings GossamerSettings = {
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{"rambank1_size", StrProperty("256MB")},
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{"rambank2_size", StrProperty("0") },
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{"rambank3_size", StrProperty("0") },
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{"gfxmem_size", StrProperty("2MB") }
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};
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static const map<string, Settings> machines = {
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{"pmg3", GossamerSettings}
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};
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string machine_name_from_rom(string& rom_filepath) {
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ifstream rom_file;
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uint32_t file_size, config_info_offset, rom_id;
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char rom_id_str[17];
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string machine_name = "";
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rom_file.open(rom_filepath, ios::in | ios::binary);
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if (rom_file.fail()) {
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LOG_F(ERROR, "Cound not open the specified ROM file.");
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goto bail_out;
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}
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rom_file.seekg(0, rom_file.end);
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file_size = rom_file.tellg();
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rom_file.seekg(0, rom_file.beg);
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if (file_size != 0x400000UL) {
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LOG_F(ERROR, "Unxpected ROM File size. Expected size is 4 megabytes.");
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goto bail_out;
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}
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/* read config info offset from file */
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config_info_offset = 0;
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rom_file.seekg(0x300080, ios::beg);
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rom_file.read((char*)&config_info_offset, 4);
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config_info_offset = READ_DWORD_BE_A(&config_info_offset);
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/* rewind to ConfigInfo.BootstrapVersion field */
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rom_file.seekg(0x300064 + config_info_offset, ios::beg);
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/* read BootstrapVersion as C string */
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rom_file.read(rom_id_str, 16);
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rom_id_str[16] = 0;
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LOG_F(INFO, "ROM BootstrapVersion: %s", rom_id_str);
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if (strncmp(rom_id_str, "Boot", 4) != 0) {
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LOG_F(ERROR, "Invalid BootstrapVersion string.");
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goto bail_out;
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}
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/* convert BootstrapVersion string to ROM ID */
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rom_id = (rom_id_str[5] << 24) | (rom_id_str[6] << 16) |
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(rom_id_str[7] << 8) | rom_id_str[8];
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LOG_F(INFO, "The machine is identified as... %s\n",
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std::get<1>(rom_identity.at(rom_id)));
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machine_name = std::get<0>(rom_identity.at(rom_id));
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bail_out:
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rom_file.close();
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return machine_name;
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}
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int get_machine_settings(string& id, map<string, string> &settings) {
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try {
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Settings props = machines.at(id);
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for (auto& p : props) {
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settings[p.first] = p.second.get_string();
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}
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}
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catch(out_of_range ex) {
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LOG_F(ERROR, "Unknown machine id %s", id.c_str());
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return -1;
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}
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return 0;
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}
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void set_machine_settings(map<string, string> &settings) {
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for (auto& s : settings) {
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cout << s.first << " : " << s.second << endl;
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}
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}
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int create_machine_for_id(uint32_t id, uint32_t* grab_ram_size, uint32_t gfx_size) {
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switch (id) {
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case 0x476F7373:
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create_gossamer(grab_ram_size, gfx_size);
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break;
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default:
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LOG_F(ERROR, "Unknown machine ID: %X", id);
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return -1;
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}
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return 0;
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}
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/* Read ROM file content and transfer it to the dedicated ROM region */
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void load_rom(std::ifstream& rom_file, uint32_t file_size) {
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unsigned char* sysrom_mem = new unsigned char[file_size];
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rom_file.seekg(0, ios::beg);
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rom_file.read((char*)sysrom_mem, file_size);
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MemCtrlBase* mem_ctrl = dynamic_cast<MemCtrlBase*>(
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gMachineObj->get_comp_by_type(HWCompType::MEM_CTRL));
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mem_ctrl->set_data(0xFFC00000, sysrom_mem, file_size);
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delete[] sysrom_mem;
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}
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int create_machine_for_rom(const char* rom_filepath, uint32_t* grab_ram_size, uint32_t gfx_size) {
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ifstream rom_file;
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uint32_t file_size, config_info_offset, rom_id;
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char rom_id_str[17];
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rom_file.open(rom_filepath, ios::in | ios::binary);
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if (rom_file.fail()) {
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LOG_F(ERROR, "Cound not open the specified ROM file.");
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rom_file.close();
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return -1;
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}
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rom_file.seekg(0, rom_file.end);
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file_size = rom_file.tellg();
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rom_file.seekg(0, rom_file.beg);
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if (file_size != 0x400000UL) {
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LOG_F(ERROR, "Unxpected ROM File size. Expected size is 4 megabytes.");
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rom_file.close();
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return -1;
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}
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/* read config info offset from file */
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config_info_offset = 0;
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rom_file.seekg(0x300080, ios::beg);
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rom_file.read((char*)&config_info_offset, 4);
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config_info_offset = READ_DWORD_BE_A(&config_info_offset);
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/* rewind to ConfigInfo.BootstrapVersion field */
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rom_file.seekg(0x300064 + config_info_offset, ios::beg);
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/* read BootstrapVersion as C string */
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rom_file.read(rom_id_str, 16);
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rom_id_str[16] = 0;
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LOG_F(INFO, "ROM BootstrapVersion: %s", rom_id_str);
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if (strncmp(rom_id_str, "Boot", 4) != 0) {
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LOG_F(ERROR, "Invalid BootstrapVersion string.");
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rom_file.close();
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return -1;
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}
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/* convert BootstrapVersion string to ROM ID */
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rom_id = (rom_id_str[5] << 24) | (rom_id_str[6] << 16) | (rom_id_str[7] << 8) | rom_id_str[8];
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LOG_F(INFO, "The machine is identified as... %s\n", std::get<1>(rom_identity.at(rom_id)));
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create_machine_for_id(rom_id, grab_ram_size, gfx_size);
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load_rom(rom_file, file_size);
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rom_file.close();
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return 0;
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}
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