Add Bondi (iMac G3)

Co-Authored-By: Rairii <2650838+Wack0@users.noreply.github.com>

Author: dingusdev

machines/machinebondi.cpp

@@ -0,0 +1,101 @@
+/*
+ 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/ioctrl/macio.h>
+#include <devices/memctrl/mpc106.h>
+#include <devices/memctrl/spdram.h>
+#include <machines/machinebase.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_bondi(std::string& id) {
+    LOG_F(INFO, "Building machine Bondi...");
+
+    // get pointer to the memory controller/primary PCI bridge object
+    MPC106* grackle_obj = dynamic_cast<MPC106*>(gMachineObj->get_comp_by_name("Grackle"));
+
+    dynamic_cast<HeathrowIC*>(gMachineObj->get_comp_by_name("Heathrow"))->set_media_bay_id(0x30);
+
+    grackle_obj->pci_register_device(
+        DEV_FUN(0x10, 0), dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name("Heathrow")));
+
+    grackle_obj->pci_register_device(
+        DEV_FUN(0x12, 0), dynamic_cast<PCIDevice*>(gMachineObj->get_comp_by_name("AtiMach64Gx")));
+
+    // allocate ROM region
+    if (!grackle_obj->add_rom_region(0xFFF00000, 0x100000)) {
+        LOG_F(ERROR, "Could not allocate ROM region!");
+        return -1;
+    }
+
+    // configure RAM slots
+    // First ram slot is enumerated twice for some reason, the second slot is never enumerated, so
+    // put half the ram in each slot.
+    setup_ram_slot("RAM_DIMM_1", 0x50, GET_INT_PROP("rambank1_size") / 2);
+    setup_ram_slot("RAM_DIMM_2", 0x51, GET_INT_PROP("rambank1_size") / 2);
+
+    // 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 bondi_settings = {
+    {"rambank1_size", new IntProperty(128, vector<uint32_t>({32, 64, 128}))},
+    {"emmo", new BinProperty(0)},
+    {"hdd_config", new StrProperty("Ide0:0")},
+    {"cdr_config", new StrProperty("Ide1:0")},
+};
+
+static vector<string> bondi_devices = {
+    "Grackle", "BurgundySnd", "Heathrow", "AtiMach64Gx", "AtaHardDisk", "AtapiCdrom"};
+
+static const MachineDescription bondi_descriptor = {
+    .name        = "imacg3",
+    .description = "iMac G3 Bondi Blue",
+    .devices     = bondi_devices,
+    .settings    = bondi_settings,
+    .init_func   = &initialize_bondi};
+
+REGISTER_MACHINE(imacg3, bondi_descriptor);

machines/machinefactory.cpp

@@ -190,8 +190,8 @@ static rom_info rom_identity[] = {
 
     {     0x10f1, 1024, 0,        0,          0, 0, nullptr       , nullptr    , nullptr   , nullptr                      , "PowerBook G3 Lombard"                              }, // PowerBook1,1
     {     0x11f4, 1024, 0,        0,          0, 0, nullptr       , nullptr    , "pmg3nw"  , "Power Mac Yosemite"         , "Power Mac B&W G3"                                  }, // PowerMac1,1
-    {     0x13f2, 1024, 0,        0,          0, 0, nullptr       , nullptr    , nullptr   , nullptr                      , "iMac (233 MHz) (Bondi Blue)"                       }, // iMac,1
-    {     0x13f3, 1024, 0,        0,          0, 0, nullptr       , nullptr    , nullptr   , nullptr                      , "iMac (266,333 MHz) (Tray Loading)"                 }, // iMac,1
+    {     0x13f2, 1024, 0,        0,          0, 0, nullptr       , nullptr    , "imacg3"  , "iMac G3 Bondi"              , "iMac (233 MHz) (Bondi Blue)"                       }, // iMac,1
+    {     0x13f3, 1024, 0,        0,          0, 0, nullptr       , nullptr    , "imacg3"  , "iMac G3 Tray Loading"       , "iMac (266,333 MHz) (Tray Loading)"                 }, // iMac,1
 
     {          0, 1024, 0, 0x008100, 0x266f2e55, 0, "Kihei"       , "P7"       , nullptr   , nullptr                      , "iMac G3 (Slot Loading)"                            }, // PowerMac2,1 // 2001-09-14 419f1
     {          0, 1024, 0, 0x008100, 0x55402f54, 0, "Kihei"       , "P7"       , nullptr   , nullptr                      , "iMac G3 (Slot Loading)"                            }, // PowerMac2,1