1 /* 2 * QEMU Eyetech AmigaOne/Mai Logic Teron emulation 3 * 4 * Copyright (c) 2023 BALATON Zoltan 5 * 6 * This work is licensed under the GNU GPL license version 2 or later. 7 * 8 */ 9 10 #include "qemu/osdep.h" 11 #include "qemu/units.h" 12 #include "qemu/datadir.h" 13 #include "qemu/log.h" 14 #include "qemu/error-report.h" 15 #include "qapi/error.h" 16 #include "hw/ppc/ppc.h" 17 #include "hw/boards.h" 18 #include "hw/loader.h" 19 #include "hw/pci-host/articia.h" 20 #include "hw/isa/vt82c686.h" 21 #include "hw/ide/pci.h" 22 #include "hw/i2c/smbus_eeprom.h" 23 #include "hw/ppc/ppc.h" 24 #include "sysemu/qtest.h" 25 #include "sysemu/reset.h" 26 #include "kvm_ppc.h" 27 28 #define BUS_FREQ_HZ 100000000 29 30 /* 31 * Firmware binary available at 32 * https://www.hyperion-entertainment.com/index.php/downloads?view=files&parent=28 33 * then "tail -c 524288 updater.image >u-boot-amigaone.bin" 34 * 35 * BIOS emulator in firmware cannot run QEMU vgabios and hangs on it, use 36 * -device VGA,romfile=VGABIOS-lgpl-latest.bin 37 * from http://www.nongnu.org/vgabios/ instead. 38 */ 39 #define PROM_FILENAME "u-boot-amigaone.bin" 40 #define PROM_ADDR 0xfff00000 41 #define PROM_SIZE (512 * KiB) 42 43 static void amigaone_cpu_reset(void *opaque) 44 { 45 PowerPCCPU *cpu = opaque; 46 47 cpu_reset(CPU(cpu)); 48 cpu_ppc_tb_reset(&cpu->env); 49 } 50 51 static void fix_spd_data(uint8_t *spd) 52 { 53 uint32_t bank_size = 4 * MiB * spd[31]; 54 uint32_t rows = bank_size / spd[13] / spd[17]; 55 spd[3] = ctz32(rows) - spd[4]; 56 } 57 58 static void amigaone_init(MachineState *machine) 59 { 60 PowerPCCPU *cpu; 61 CPUPPCState *env; 62 MemoryRegion *rom, *pci_mem, *mr; 63 const char *fwname = machine->firmware ?: PROM_FILENAME; 64 char *filename; 65 ssize_t sz; 66 PCIBus *pci_bus; 67 Object *via; 68 DeviceState *dev; 69 I2CBus *i2c_bus; 70 uint8_t *spd_data; 71 int i; 72 73 /* init CPU */ 74 cpu = POWERPC_CPU(cpu_create(machine->cpu_type)); 75 env = &cpu->env; 76 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) { 77 error_report("Incompatible CPU, only 6xx bus supported"); 78 exit(1); 79 } 80 cpu_ppc_tb_init(env, BUS_FREQ_HZ / 4); 81 qemu_register_reset(amigaone_cpu_reset, cpu); 82 83 /* RAM */ 84 if (machine->ram_size > 2 * GiB) { 85 error_report("RAM size more than 2 GiB is not supported"); 86 exit(1); 87 } 88 memory_region_add_subregion(get_system_memory(), 0, machine->ram); 89 if (machine->ram_size < 1 * GiB + 32 * KiB) { 90 /* Firmware uses this area for startup */ 91 mr = g_new(MemoryRegion, 1); 92 memory_region_init_ram(mr, NULL, "init-cache", 32 * KiB, &error_fatal); 93 memory_region_add_subregion(get_system_memory(), 0x40000000, mr); 94 } 95 96 /* allocate and load firmware */ 97 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, fwname); 98 if (filename) { 99 rom = g_new(MemoryRegion, 1); 100 memory_region_init_rom(rom, NULL, "rom", PROM_SIZE, &error_fatal); 101 memory_region_add_subregion(get_system_memory(), PROM_ADDR, rom); 102 sz = load_image_targphys(filename, PROM_ADDR, PROM_SIZE); 103 if (sz <= 0 || sz > PROM_SIZE) { 104 error_report("Could not load firmware '%s'", filename); 105 exit(1); 106 } 107 g_free(filename); 108 } else if (!qtest_enabled()) { 109 error_report("Could not find firmware '%s'", fwname); 110 exit(1); 111 } 112 113 /* Articia S */ 114 dev = sysbus_create_simple(TYPE_ARTICIA, 0xfe000000, NULL); 115 116 i2c_bus = I2C_BUS(qdev_get_child_bus(dev, "smbus")); 117 if (machine->ram_size > 512 * MiB) { 118 spd_data = spd_data_generate(SDR, machine->ram_size / 2); 119 } else { 120 spd_data = spd_data_generate(SDR, machine->ram_size); 121 } 122 fix_spd_data(spd_data); 123 smbus_eeprom_init_one(i2c_bus, 0x51, spd_data); 124 if (machine->ram_size > 512 * MiB) { 125 smbus_eeprom_init_one(i2c_bus, 0x52, spd_data); 126 } 127 128 pci_mem = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); 129 mr = g_new(MemoryRegion, 1); 130 memory_region_init_alias(mr, OBJECT(dev), "pci-mem-low", pci_mem, 131 0, 0x1000000); 132 memory_region_add_subregion(get_system_memory(), 0xfd000000, mr); 133 mr = g_new(MemoryRegion, 1); 134 memory_region_init_alias(mr, OBJECT(dev), "pci-mem-high", pci_mem, 135 0x80000000, 0x7d000000); 136 memory_region_add_subregion(get_system_memory(), 0x80000000, mr); 137 pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci.0")); 138 139 /* VIA VT82c686B South Bridge (multifunction PCI device) */ 140 via = OBJECT(pci_create_simple_multifunction(pci_bus, PCI_DEVFN(7, 0), 141 TYPE_VT82C686B_ISA)); 142 object_property_add_alias(OBJECT(machine), "rtc-time", 143 object_resolve_path_component(via, "rtc"), 144 "date"); 145 qdev_connect_gpio_out(DEVICE(via), 0, 146 qdev_get_gpio_in(DEVICE(cpu), PPC6xx_INPUT_INT)); 147 for (i = 0; i < PCI_NUM_PINS; i++) { 148 qdev_connect_gpio_out(dev, i, qdev_get_gpio_in_named(DEVICE(via), 149 "pirq", i)); 150 } 151 pci_ide_create_devs(PCI_DEVICE(object_resolve_path_component(via, "ide"))); 152 pci_vga_init(pci_bus); 153 } 154 155 static void amigaone_machine_init(MachineClass *mc) 156 { 157 mc->desc = "Eyetech AmigaOne/Mai Logic Teron"; 158 mc->init = amigaone_init; 159 mc->block_default_type = IF_IDE; 160 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("7457_v1.2"); 161 mc->default_display = "std"; 162 mc->default_ram_id = "ram"; 163 mc->default_ram_size = 512 * MiB; 164 } 165 166 DEFINE_MACHINE("amigaone", amigaone_machine_init) 167