dingusppc/machines/machinefactory.cpp
2021-02-03 12:19:18 +01:00

280 lines
8.6 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-20 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/** @file Factory for creating different machines.
Author: Max Poliakovski
*/
#include "machinefactory.h"
#include "devices/memctrlbase.h"
#include "memaccess.h"
#include "machineproperties.h"
#include <cinttypes>
#include <cstring>
#include <fstream>
#include <functional>
#include <iostream>
#include <iomanip>
#include <map>
#include <memory>
#include <vector>
#include <thirdparty/loguru/loguru.hpp>
using namespace std;
map<string, unique_ptr<BasicProperty>> gMachineSettings;
/**
Power Macintosh ROM identification map.
Maps Bootstrap string located at offset 0x30D064 (PCI Macs)
or 0x30C064 (Nubus Macs) to machine name and description.
*/
static const map<uint32_t, std::tuple<string, const char*>> rom_identity = {
{0x416C6368, {"pm6400", "Performa 6400"}}, // Alchemy
//{"Come", "PowerBook 2400"}, // Comet
{0x436F7264, {"pm5200", "Power Mac 5200/6200 series"}}, // Cordyceps
{0x47617A65, {"pm6500", "Power Mac 6500"}}, // Gazelle
{0x476F7373, {"pmg3", "Power Mac G3 Beige"}}, // Gossamer
{0x47525820, {"pbg3", "PowerBook G3 Wallstreet"}},
//{"Hoop", "PowerBook 3400"}, // Hooper
{0x50425820, {"pb-preg3", "PowerBook Pre-G3"}},
{0x50444D20, {"pm6100", "Nubus Power Mac"}}, // Piltdown Man (6100/7100/8100)
{0x50697020, {"pippin", "Bandai Pippin"}}, // Pippin
//{"Powe", "Generic Power Mac"}, // PowerMac?
{0x544E5420, {"pm7200", "Power Mac 7xxxx/8xxx series"}}, // Trinitrotoluene :-)
{0x5A616E7A, {"pm4400", "Power Mac 4400/7220"}}, // Zanzibar
};
static const PropMap GossamerSettings = {
{"rambank1_size",
new IntProperty(256, vector<uint32_t>({8, 16, 32, 64, 128, 256}))},
{"rambank2_size",
new IntProperty( 0, vector<uint32_t>({0, 8, 16, 32, 64, 128, 256}))},
{"rambank3_size",
new IntProperty( 0, vector<uint32_t>({0, 8, 16, 32, 64, 128, 256}))},
{"gfxmem_size",
new IntProperty( 2, vector<uint32_t>({2, 4, 6}))},
};
static const map<string, string> PropHelp = {
{"rambank1_size", "specifies RAM bank 1 size in MB"},
{"rambank2_size", "specifies RAM bank 2 size in MB"},
{"rambank3_size", "specifies RAM bank 3 size in MB"},
{"gfxmem_size", "specifies video memory size in MB"},
};
static const map<string, tuple<PropMap, function<int(void)>, string>> machines = {
{"pmg3", {GossamerSettings, create_gossamer, "Power Macintosh G3 (Beige)"}},
};
string machine_name_from_rom(string& rom_filepath) {
ifstream rom_file;
uint32_t file_size, config_info_offset, rom_id;
char rom_id_str[17];
string machine_name = "";
rom_file.open(rom_filepath, ios::in | ios::binary);
if (rom_file.fail()) {
LOG_F(ERROR, "Cound not open the specified ROM file.");
goto bail_out;
}
rom_file.seekg(0, rom_file.end);
file_size = rom_file.tellg();
rom_file.seekg(0, rom_file.beg);
if (file_size != 0x400000UL) {
LOG_F(ERROR, "Unxpected ROM File size. Expected size is 4 megabytes.");
goto bail_out;
}
/* read config info offset from file */
config_info_offset = 0;
rom_file.seekg(0x300080, ios::beg);
rom_file.read((char*)&config_info_offset, 4);
config_info_offset = READ_DWORD_BE_A(&config_info_offset);
/* rewind to ConfigInfo.BootstrapVersion field */
rom_file.seekg(0x300064 + config_info_offset, ios::beg);
/* read BootstrapVersion as C string */
rom_file.read(rom_id_str, 16);
rom_id_str[16] = 0;
LOG_F(INFO, "ROM BootstrapVersion: %s", rom_id_str);
if (strncmp(rom_id_str, "Boot", 4) != 0) {
LOG_F(ERROR, "Invalid BootstrapVersion string.");
goto bail_out;
}
/* convert BootstrapVersion string to ROM ID */
rom_id = (rom_id_str[5] << 24) | (rom_id_str[6] << 16) |
(rom_id_str[7] << 8) | rom_id_str[8];
LOG_F(INFO, "The machine is identified as... %s\n",
std::get<1>(rom_identity.at(rom_id)));
machine_name = std::get<0>(rom_identity.at(rom_id));
bail_out:
rom_file.close();
return machine_name;
}
int get_machine_settings(string& id, map<string, string> &settings) {
try {
auto props = get<0>(machines.at(id));
gMachineSettings.clear();
for (auto& p : props) {
settings[p.first] = p.second->get_string();
/* populate dynamic machine settings from presets */
gMachineSettings[p.first] = unique_ptr<BasicProperty>(p.second->clone());
}
}
catch(out_of_range ex) {
LOG_F(ERROR, "Unknown machine id %s", id.c_str());
return -1;
}
return 0;
}
void set_machine_settings(map<string, string> &settings) {
for (auto& s : settings) {
gMachineSettings.at(s.first)->set_string(s.second);
}
/* print machine settings summary */
cout << endl << "Machine settings summary: " << endl;
for (auto& p : gMachineSettings) {
cout << p.first << " : " << p.second->get_string() << endl;
}
}
void list_machines() {
cout << endl << "Supported machines:" << endl << endl;
for (auto& mach : machines) {
cout << setw(13) << mach.first << "\t\t" << get<2>(mach.second) << endl;
}
cout << endl;
}
void list_properties() {
cout << endl;
for (auto& mach : machines) {
cout << get<2>(mach.second) << " supported properties:" << endl << endl;
for (auto& p : get<0>(mach.second)) {
cout << setw(13) << p.first << "\t\t" << PropHelp.at(p.first)
<< endl;
if (p.second->get_type() == PROP_TYPE_INTEGER) {
cout << setw(13) << "\t\t\t" "Valid values: " <<
dynamic_cast<IntProperty*>(p.second)->get_valid_values_as_str()
<< endl;
}
cout << endl;
}
}
cout << endl;
}
/* Read ROM file content and transfer it to the dedicated ROM region */
void load_rom(std::ifstream& rom_file, uint32_t file_size) {
unsigned char* sysrom_mem = new unsigned char[file_size];
rom_file.seekg(0, ios::beg);
rom_file.read((char*)sysrom_mem, file_size);
MemCtrlBase* mem_ctrl = dynamic_cast<MemCtrlBase*>(
gMachineObj->get_comp_by_type(HWCompType::MEM_CTRL));
mem_ctrl->set_data(0xFFC00000, sysrom_mem, file_size);
delete[] sysrom_mem;
}
/* Read ROM file content and transfer it to the dedicated ROM region */
int load_boot_rom(string& rom_filepath) {
ifstream rom_file;
size_t file_size;
int result;
rom_file.open(rom_filepath, ios::in | ios::binary);
if (rom_file.fail()) {
LOG_F(ERROR, "Cound not open the specified ROM file.");
rom_file.close();
return -1;
}
rom_file.seekg(0, rom_file.end);
file_size = rom_file.tellg();
rom_file.seekg(0, rom_file.beg);
if (file_size != 0x400000UL) {
LOG_F(ERROR, "Unxpected ROM File size. Expected size is 4 megabytes.");
result = -1;
} else {
unsigned char* sysrom_mem = new unsigned char[file_size];
rom_file.seekg(0, ios::beg);
rom_file.read((char*)sysrom_mem, file_size);
MemCtrlBase* mem_ctrl = dynamic_cast<MemCtrlBase*>(
gMachineObj->get_comp_by_type(HWCompType::MEM_CTRL));
mem_ctrl->set_data(0xFFC00000, sysrom_mem, file_size);
delete[] sysrom_mem;
result = 0;
}
rom_file.close();
return result;
}
int create_machine_for_id(string& id, string& rom_filepath) {
try {
auto machine = machines.at(id);
/* build machine and load boot ROM */
if (get<1>(machine)() < 0 || load_boot_rom(rom_filepath) < 0) {
return -1;
}
} catch(out_of_range ex) {
LOG_F(ERROR, "Unknown machine id %s", id.c_str());
return -1;
}
return 0;
}