--- /dev/null
+/*
+ * 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)
projects / mirror_qemu.git / commitdiff