mirror of
https://github.com/dingusdev/dingusppc.git
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128 lines
4.7 KiB
C++
128 lines
4.7 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-26 The DingusPPC Development Team
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(See CREDITS.MD for more details)
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(You may also contact divingkxt or powermax2286 on Discord)
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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 Bondi machine (iMac G3). */
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#include <cpu/ppc/ppcemu.h>
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#include <devices/deviceregistry.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 <machines/machine.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 const std::vector<PciIrqMap> grackle_irq_map = {
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{nullptr , DEV_FUN(0x00,0), }, // Grackle
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{"pci_A1" , DEV_FUN(0x0D,0), IntSrc::PCI_A },
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{"pci_B1" , DEV_FUN(0x0E,0), IntSrc::PCI_B },
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{"pci_C1" , DEV_FUN(0x0F,0), IntSrc::PCI_C },
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{nullptr , DEV_FUN(0x10,0), }, // Paddington I/O controller
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{"pci_GPU" , DEV_FUN(0x12,0), IntSrc::PCI_GPU },
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{"pci_PERCH", DEV_FUN(0x14,0), IntSrc::PCI_PERCH},
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};
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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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class MachineBondi : public Machine {
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public:
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int initialize(const std::string &id);
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};
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int MachineBondi::initialize(const std::string &id) {
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LOG_F(INFO, "Building machine Bondi...");
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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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grackle_obj->set_irq_map(grackle_irq_map);
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MacIoTwo* mio_obj = dynamic_cast<MacIoTwo*>(gMachineObj->get_comp_by_name("Paddington"));
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mio_obj->set_media_bay_id(0x30);
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grackle_obj->pci_register_device(DEV_FUN(0x10,0), mio_obj);
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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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// First ram slot is enumerated twice for some reason, the second slot is never
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// enumerated, so make sure both slots have the same RAM.
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uint32_t bank_1_size = GET_INT_PROP("rambank1_size");
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uint32_t bank_2_size = GET_INT_PROP("rambank2_size");
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if (bank_1_size != bank_2_size)
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LOG_F(ERROR, "rambank1_size and rambank2_size should have equal size");
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setup_ram_slot("RAM_DIMM_1", 0x50, bank_1_size);
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setup_ram_slot("RAM_DIMM_2", 0x51, bank_2_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 bondi_settings = {
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{"rambank1_size", new IntProperty(128, std::vector<uint32_t>({8, 16, 32, 64, 128, 256, 512}))},
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{"rambank2_size", new IntProperty(128, std::vector<uint32_t>({8, 16, 32, 64, 128, 256, 512}))},
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{"emmo", new BinProperty(0)},
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{"hdd_config", new StrProperty("Ide0:0")},
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{"cdr_config", new StrProperty("Ide1:0")},
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{"pci_GPU", new StrProperty("AtiRagePro")},
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};
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static std::vector<std::string> bondi_devices = {
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"Grackle", "BurgundySnd", "Paddington", "AtaHardDisk", "AtapiCdrom"};
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static const DeviceDescription MachineBondi_descriptor = {
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Machine::create<MachineBondi>, bondi_devices, bondi_settings
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};
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REGISTER_DEVICE(MachineBondi, MachineBondi_descriptor);
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static const MachineDescription bondi_descriptor = {
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.name = "imacg3",
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.description = "iMac G3 Bondi Blue",
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.machine_root = "MachineBondi",
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};
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REGISTER_MACHINE(imacg3, bondi_descriptor);
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