dingusppc/machines/machineyosemite.cpp

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/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-23 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 Construct the Yosemite machine (Power Macintosh G3 Blue & White). */
#include <cpu/ppc/ppcemu.h>
#include <devices/common/pci/dec21154.h>
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#include <devices/memctrl/mpc106.h>
#include <devices/memctrl/spdram.h>
#include <machines/machinebase.h>
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#include <machines/machinefactory.h>
#include <machines/machineproperties.h>
static void setup_ram_slot(std::string name, int i2c_addr, int capacity_megs) {
if (!capacity_megs)
return;
gMachineObj->add_device(name, std::unique_ptr<SpdSdram168>(new SpdSdram168(i2c_addr)));
SpdSdram168* ram_dimm = dynamic_cast<SpdSdram168*>(gMachineObj->get_comp_by_name(name));
ram_dimm->set_capacity(capacity_megs);
// register RAM DIMM with the I2C bus
I2CBus* i2c_bus = dynamic_cast<I2CBus*>(gMachineObj->get_comp_by_type(HWCompType::I2C_HOST));
i2c_bus->register_device(i2c_addr, ram_dimm);
}
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int initialize_yosemite(std::string& id)
{
LOG_F(INFO, "Building machine Yosemite...");
// 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"));
// get pointer to the bridge of the secondary PCI bus
DecPciBridge *sec_bridge = dynamic_cast<DecPciBridge*>(gMachineObj->get_comp_by_name("Dec21154"));
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// connect PCI devices
grackle_obj->pci_register_device(DEV_FUN(13,0),
dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name("Dec21154")));
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sec_bridge->pci_register_device(DEV_FUN(5,0),
dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name("Heathrow")));
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// allocate ROM region
if (!grackle_obj->add_rom_region(0xFFF00000, 0x100000)) {
LOG_F(ERROR, "Could not allocate ROM region!");
return -1;
}
// configure RAM slots
setup_ram_slot("RAM_DIMM_1", 0x50, GET_INT_PROP("rambank1_size"));
setup_ram_slot("RAM_DIMM_2", 0x51, GET_INT_PROP("rambank2_size"));
setup_ram_slot("RAM_DIMM_3", 0x52, GET_INT_PROP("rambank3_size"));
setup_ram_slot("RAM_DIMM_4", 0x53, GET_INT_PROP("rambank4_size"));
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// configure CPU clocks
uint64_t bus_freq = 66820000ULL;
uint64_t timebase_freq = bus_freq / 4;
// initialize virtual CPU and request MPC750 CPU aka G3
ppc_cpu_init(grackle_obj, PPC_VER::MPC750, timebase_freq);
// set CPU PLL ratio to 3.5
ppc_state.spr[SPR::HID1] = 0xE << 28;
return 0;
}
static const PropMap yosemite_settings = {
{"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}))},
{"rambank4_size",
new IntProperty( 0, vector<uint32_t>({0, 8, 16, 32, 64, 128, 256}))},
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{"emmo",
new BinProperty(0)},
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{"cdr_config",
new StrProperty("Ide0:0")},
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};
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static vector<string> yosemite_devices = {
"Grackle", "Dec21154", "BurgundySnd", "Heathrow", "AtapiCdrom"
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};
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static const MachineDescription yosemite_descriptor = {
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.name = "pmg3dt",
.description = "Power Macintosh G3 Blue and White",
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.devices = yosemite_devices,
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.settings = yosemite_settings,
.init_func = &initialize_yosemite
};
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REGISTER_MACHINE(pmg3nw, yosemite_descriptor);