102 lines
3.6 KiB
C++
102 lines
3.6 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 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/atirage.h"
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#include "devices/machineid.h"
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#include "devices/macio.h"
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#include "devices/mpc106.h"
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#include "devices/spdram.h"
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#include "devices/viacuda.h"
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#include "machinebase.h"
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#include <thirdparty/loguru/loguru.hpp>
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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_component(name, 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 create_gossamer() {
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if (gMachineObj) {
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LOG_F(ERROR, "Global machine object not empty!");
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return -1;
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}
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LOG_F(INFO, "Initializing the Gossamer hardware...");
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/* initialize the global machine object */
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gMachineObj.reset(new MachineBase("Gossamer"));
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/* register MPC106 aka Grackle as memory controller and PCI host */
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gMachineObj->add_component("Grackle", new MPC106);
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gMachineObj->add_alias("Grackle", "PCI_Host");
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/* get raw pointer to MPC106 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_component("MachineID", new GossamerID(0x3d8c));
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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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/* add the Heathrow I/O controller */
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gMachineObj->add_component("Heathrow", new HeathrowIC);
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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, 64); /* RAM slot 1 -> 64MB by default */
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setup_ram_slot("RAM_DIMM_2", 0x56, 0); /* RAM slot 2 -> empty by default */
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setup_ram_slot("RAM_DIMM_3", 0x55, 0); /* RAM slot 3 -> empty by default */
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/* register ATI 3D Rage Pro video card with the PCI host bridge */
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gMachineObj->add_component("ATIRage", new ATIRage(ATI_RAGE_PRO_DEV_ID));
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grackle_obj->pci_register_device(
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18, dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name("ATIRage")));
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/* Init virtual CPU and request MPC750 CPU aka G3 */
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ppc_cpu_init(grackle_obj, PPC_VER::MPC750);
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LOG_F(INFO, "Initialization complete.\n");
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return 0;
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}
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