120 lines
4.1 KiB
C++
120 lines
4.1 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-22 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 Constructs the Gossamer machine.
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Author: Max Poliakovski
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*/
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#include <cpu/ppc/ppcemu.h>
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#include <devices/common/machineid.h>
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#include <devices/floppy/floppyimg.h>
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#include <devices/ioctrl/macio.h>
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#include <devices/memctrl/mpc106.h>
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#include <devices/memctrl/spdram.h>
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#include <devices/sound/soundserver.h>
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#include <devices/video/atirage.h>
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#include <loguru.hpp>
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#include <machines/machinebase.h>
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#include <machines/machinefactory.h>
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#include <machines/machineproperties.h>
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#include <memory>
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#include <string>
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static void setup_ram_slot(std::string name, int i2c_addr, int capacity_megs) {
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if (!capacity_megs)
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return;
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gMachineObj->add_device(name, std::unique_ptr<SpdSdram168>(new SpdSdram168(i2c_addr)));
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SpdSdram168* ram_dimm = dynamic_cast<SpdSdram168*>(gMachineObj->get_comp_by_name(name));
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ram_dimm->set_capacity(capacity_megs);
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// register RAM DIMM with the I2C bus
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I2CBus* i2c_bus = dynamic_cast<I2CBus*>(gMachineObj->get_comp_by_type(HWCompType::I2C_HOST));
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i2c_bus->register_device(i2c_addr, ram_dimm);
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}
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int initialize_gossamer(std::string& id)
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{
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// get pointer to the memory controller/PCI host bridge object
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MPC106* grackle_obj = dynamic_cast<MPC106*>(gMachineObj->get_comp_by_name("Grackle"));
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// add the machine ID register
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gMachineObj->add_device("MachineID", std::unique_ptr<GossamerID>(new GossamerID(0xBF3D)));
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grackle_obj->add_mmio_region(
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0xFF000004, 4096, dynamic_cast<MMIODevice*>(gMachineObj->get_comp_by_name("MachineID")));
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// register the Heathrow I/O controller with the PCI host bridge
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grackle_obj->pci_register_device(
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16, dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name("Heathrow")));
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// allocate ROM region
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if (!grackle_obj->add_rom_region(0xFFC00000, 0x400000)) {
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LOG_F(ERROR, "Could not allocate ROM region!\n");
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return -1;
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}
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// configure RAM slots
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setup_ram_slot("RAM_DIMM_1", 0x57, GET_INT_PROP("rambank1_size"));
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setup_ram_slot("RAM_DIMM_2", 0x56, GET_INT_PROP("rambank2_size"));
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setup_ram_slot("RAM_DIMM_3", 0x55, GET_INT_PROP("rambank3_size"));
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// select built-in GPU name
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std::string gpu_name = "AtiRageGT";
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if (id == "pmg3twr") {
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gpu_name = "AtiRagePro";
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}
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// register built-in ATI Rage GPU with the PCI host bridge
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grackle_obj->pci_register_device(
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18, dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name(gpu_name)));
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// initialize virtual CPU and request MPC750 CPU aka G3
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ppc_cpu_init(grackle_obj, PPC_VER::MPC750, 16705000ULL);
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return 0;
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}
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static const PropMap gossamer_settings = {
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{"rambank1_size",
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new IntProperty(256, vector<uint32_t>({8, 16, 32, 64, 128, 256}))},
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{"rambank2_size",
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new IntProperty( 0, vector<uint32_t>({0, 8, 16, 32, 64, 128, 256}))},
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{"rambank3_size",
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new IntProperty( 0, vector<uint32_t>({0, 8, 16, 32, 64, 128, 256}))},
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};
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static vector<string> pmg3_devices = {
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"Grackle", "Heathrow", "AtiRageGT"
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};
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static const MachineDescription pmg3dt_descriptor = {
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.name = "pmg3",
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.description = "Power Macintosh G3 (Beige) Desktop",
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.devices = pmg3_devices,
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.settings = gossamer_settings,
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.init_func = &initialize_gossamer
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};
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REGISTER_MACHINE(pmg3dt, pmg3dt_descriptor);
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