115 lines
4.1 KiB
C++
115 lines
4.1 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 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 Construct the Yosemite machine (Power Macintosh G3 Blue & White). */
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#include <cpu/ppc/ppcemu.h>
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#include <devices/common/pci/dec21154.h>
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#include <devices/memctrl/mpc106.h>
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#include <devices/memctrl/spdram.h>
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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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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_yosemite(std::string& id)
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{
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LOG_F(INFO, "Building machine Yosemite...");
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// get pointer to the memory controller/primary PCI bridge object
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MPC106* grackle_obj = dynamic_cast<MPC106*>(gMachineObj->get_comp_by_name("Grackle"));
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// get pointer to the bridge of the secondary PCI bus
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DecPciBridge *sec_bridge = dynamic_cast<DecPciBridge*>(gMachineObj->get_comp_by_name("Dec21154"));
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// connect PCI devices
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grackle_obj->pci_register_device(DEV_FUN(13,0),
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dynamic_cast<PCIBase*>(gMachineObj->get_comp_by_name("Dec21154")));
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sec_bridge->pci_register_device(DEV_FUN(5,0),
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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(0xFFF00000, 0x100000)) {
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LOG_F(ERROR, "Could not allocate ROM region!");
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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", 0x50, GET_INT_PROP("rambank1_size"));
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setup_ram_slot("RAM_DIMM_2", 0x51, GET_INT_PROP("rambank2_size"));
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setup_ram_slot("RAM_DIMM_3", 0x52, GET_INT_PROP("rambank3_size"));
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setup_ram_slot("RAM_DIMM_4", 0x53, GET_INT_PROP("rambank4_size"));
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// configure CPU clocks
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uint64_t bus_freq = 66820000ULL;
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uint64_t timebase_freq = bus_freq / 4;
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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, false, timebase_freq);
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// set CPU PLL ratio to 3.5
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ppc_state.spr[SPR::HID1] = 0xE << 28;
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return 0;
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}
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static const PropMap yosemite_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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{"rambank4_size",
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new IntProperty( 0, vector<uint32_t>({0, 8, 16, 32, 64, 128, 256}))},
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{"emmo",
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new BinProperty(0)},
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{"cdr_config",
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new StrProperty("Ide0:0")},
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};
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static vector<string> yosemite_devices = {
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"Grackle", "Dec21154", "BurgundySnd", "Heathrow", "AtapiCdrom"
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};
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static const MachineDescription yosemite_descriptor = {
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.name = "pmg3nw",
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.description = "Power Macintosh G3 Blue and White",
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.devices = yosemite_devices,
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.settings = yosemite_settings,
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.init_func = &initialize_yosemite
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};
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REGISTER_MACHINE(pmg3nw, yosemite_descriptor);
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