mirror of
https://github.com/dingusdev/dingusppc.git
synced 2024-11-18 22:05:51 +00:00
114 lines
4.1 KiB
C++
114 lines
4.1 KiB
C++
/*
|
|
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>
|
|
#include <devices/memctrl/mpc106.h>
|
|
#include <devices/memctrl/spdram.h>
|
|
#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);
|
|
}
|
|
|
|
int initialize_yosemite(std::string& id)
|
|
{
|
|
LOG_F(INFO, "Building machine Yosemite...");
|
|
|
|
// get pointer to the memory controller/primary PCI bridge object
|
|
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"));
|
|
|
|
// connect PCI devices
|
|
grackle_obj->pci_register_device(DEV_FUN(13,0),
|
|
dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name("Dec21154")));
|
|
|
|
sec_bridge->pci_register_device(DEV_FUN(5,0),
|
|
dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name("Heathrow")));
|
|
|
|
// 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"));
|
|
|
|
// 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}))},
|
|
{"emmo",
|
|
new BinProperty(0)},
|
|
{"cdr_config",
|
|
new StrProperty("Ide0:0")},
|
|
};
|
|
|
|
static vector<string> yosemite_devices = {
|
|
"Grackle", "Dec21154", "BurgundySnd", "Heathrow", "AtapiCdrom"
|
|
};
|
|
|
|
static const MachineDescription yosemite_descriptor = {
|
|
.name = "pmg3dt",
|
|
.description = "Power Macintosh G3 Blue and White",
|
|
.devices = yosemite_devices,
|
|
.settings = yosemite_settings,
|
|
.init_func = &initialize_yosemite
|
|
};
|
|
|
|
REGISTER_MACHINE(pmg3nw, yosemite_descriptor);
|