/* * QEMU Eyetech AmigaOne/Mai Logic Teron emulation * * Copyright (c) 2023 BALATON Zoltan * * This work is licensed under the GNU GPL license version 2 or later. * */ #include "qemu/osdep.h" #include "qemu/units.h" #include "qemu/datadir.h" #include "qemu/log.h" #include "qemu/error-report.h" #include "qapi/error.h" #include "hw/ppc/ppc.h" #include "hw/boards.h" #include "hw/loader.h" #include "hw/pci-host/articia.h" #include "hw/isa/vt82c686.h" #include "hw/ide/pci.h" #include "hw/i2c/smbus_eeprom.h" #include "hw/ppc/ppc.h" #include "sysemu/qtest.h" #include "sysemu/reset.h" #include "kvm_ppc.h" #define BUS_FREQ_HZ 100000000 /* * Firmware binary available at * https://www.hyperion-entertainment.com/index.php/downloads?view=files&parent=28 * then "tail -c 524288 updater.image >u-boot-amigaone.bin" * * BIOS emulator in firmware cannot run QEMU vgabios and hangs on it, use * -device VGA,romfile=VGABIOS-lgpl-latest.bin * from http://www.nongnu.org/vgabios/ instead. */ #define PROM_FILENAME "u-boot-amigaone.bin" #define PROM_ADDR 0xfff00000 #define PROM_SIZE (512 * KiB) static void amigaone_cpu_reset(void *opaque) { PowerPCCPU *cpu = opaque; cpu_reset(CPU(cpu)); cpu_ppc_tb_reset(&cpu->env); } static void fix_spd_data(uint8_t *spd) { uint32_t bank_size = 4 * MiB * spd[31]; uint32_t rows = bank_size / spd[13] / spd[17]; spd[3] = ctz32(rows) - spd[4]; } static void amigaone_init(MachineState *machine) { PowerPCCPU *cpu; CPUPPCState *env; MemoryRegion *rom, *pci_mem, *mr; const char *fwname = machine->firmware ?: PROM_FILENAME; char *filename; ssize_t sz; PCIBus *pci_bus; Object *via; DeviceState *dev; I2CBus *i2c_bus; uint8_t *spd_data; int i; /* init CPU */ cpu = POWERPC_CPU(cpu_create(machine->cpu_type)); env = &cpu->env; if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) { error_report("Incompatible CPU, only 6xx bus supported"); exit(1); } cpu_ppc_tb_init(env, BUS_FREQ_HZ / 4); qemu_register_reset(amigaone_cpu_reset, cpu); /* RAM */ if (machine->ram_size > 2 * GiB) { error_report("RAM size more than 2 GiB is not supported"); exit(1); } memory_region_add_subregion(get_system_memory(), 0, machine->ram); if (machine->ram_size < 1 * GiB + 32 * KiB) { /* Firmware uses this area for startup */ mr = g_new(MemoryRegion, 1); memory_region_init_ram(mr, NULL, "init-cache", 32 * KiB, &error_fatal); memory_region_add_subregion(get_system_memory(), 0x40000000, mr); } /* allocate and load firmware */ filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, fwname); if (filename) { rom = g_new(MemoryRegion, 1); memory_region_init_rom(rom, NULL, "rom", PROM_SIZE, &error_fatal); memory_region_add_subregion(get_system_memory(), PROM_ADDR, rom); sz = load_image_targphys(filename, PROM_ADDR, PROM_SIZE); if (sz <= 0 || sz > PROM_SIZE) { error_report("Could not load firmware '%s'", filename); exit(1); } g_free(filename); } else if (!qtest_enabled()) { error_report("Could not find firmware '%s'", fwname); exit(1); } /* Articia S */ dev = sysbus_create_simple(TYPE_ARTICIA, 0xfe000000, NULL); i2c_bus = I2C_BUS(qdev_get_child_bus(dev, "smbus")); if (machine->ram_size > 512 * MiB) { spd_data = spd_data_generate(SDR, machine->ram_size / 2); } else { spd_data = spd_data_generate(SDR, machine->ram_size); } fix_spd_data(spd_data); smbus_eeprom_init_one(i2c_bus, 0x51, spd_data); if (machine->ram_size > 512 * MiB) { smbus_eeprom_init_one(i2c_bus, 0x52, spd_data); } pci_mem = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); mr = g_new(MemoryRegion, 1); memory_region_init_alias(mr, OBJECT(dev), "pci-mem-low", pci_mem, 0, 0x1000000); memory_region_add_subregion(get_system_memory(), 0xfd000000, mr); mr = g_new(MemoryRegion, 1); memory_region_init_alias(mr, OBJECT(dev), "pci-mem-high", pci_mem, 0x80000000, 0x7d000000); memory_region_add_subregion(get_system_memory(), 0x80000000, mr); pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci.0")); /* VIA VT82c686B South Bridge (multifunction PCI device) */ via = OBJECT(pci_create_simple_multifunction(pci_bus, PCI_DEVFN(7, 0), TYPE_VT82C686B_ISA)); object_property_add_alias(OBJECT(machine), "rtc-time", object_resolve_path_component(via, "rtc"), "date"); qdev_connect_gpio_out(DEVICE(via), 0, qdev_get_gpio_in(DEVICE(cpu), PPC6xx_INPUT_INT)); for (i = 0; i < PCI_NUM_PINS; i++) { qdev_connect_gpio_out(dev, i, qdev_get_gpio_in_named(DEVICE(via), "pirq", i)); } pci_ide_create_devs(PCI_DEVICE(object_resolve_path_component(via, "ide"))); pci_vga_init(pci_bus); } static void amigaone_machine_init(MachineClass *mc) { mc->desc = "Eyetech AmigaOne/Mai Logic Teron"; mc->init = amigaone_init; mc->block_default_type = IF_IDE; mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("7457_v1.2"); mc->default_display = "std"; mc->default_ram_id = "ram"; mc->default_ram_size = 512 * MiB; } DEFINE_MACHINE("amigaone", amigaone_machine_init)