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https://github.com/dingusdev/dingusppc.git
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6d23e18c11
PCCard is used by PowerBook G3 Wallstreet in Open Firmware 2.0.1. CardBus is probed in New World Macs starting from at least Open Firmware 4.1.9f1 sometime after Open Firmware 3.1.1. - Create PCIBase from common stuff in PCIDevice. - Add PCIBridgeBase. These have a primary bus number, secondary bus number, and subordinate bus number which are used to determine if PCI type 1 config cycle should be passed. - Change PCIBridge to use PCIBridgeBase instead of PCIDevice. - Add PCICardBusBridge which uses PCIBridgeBase.
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, 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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