/* * QEMU Motorla 680x0 Macintosh hardware System Emulator * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "qemu/osdep.h" #include "qemu/units.h" #include "qemu-common.h" #include "sysemu/sysemu.h" #include "cpu.h" #include "hw/hw.h" #include "hw/boards.h" #include "hw/irq.h" #include "elf.h" #include "hw/loader.h" #include "ui/console.h" #include "exec/address-spaces.h" #include "hw/char/escc.h" #include "hw/sysbus.h" #include "hw/scsi/esp.h" #include "bootinfo.h" #include "hw/misc/mac_via.h" #include "hw/input/adb.h" #include "hw/nubus/mac-nubus-bridge.h" #include "hw/display/macfb.h" #include "hw/block/swim.h" #include "net/net.h" #include "qapi/error.h" #include "sysemu/qtest.h" #include "sysemu/runstate.h" #include "sysemu/reset.h" #define MACROM_ADDR 0x40800000 #define MACROM_SIZE 0x00100000 #define MACROM_FILENAME "MacROM.bin" #define Q800_MACHINE_ID 35 #define Q800_CPU_ID (1 << 2) #define Q800_FPU_ID (1 << 2) #define Q800_MMU_ID (1 << 2) #define MACH_MAC 3 #define Q800_MAC_CPU_ID 2 #define IO_BASE 0x50000000 #define IO_SLICE 0x00040000 #define IO_SIZE 0x04000000 #define VIA_BASE (IO_BASE + 0x00000) #define SONIC_PROM_BASE (IO_BASE + 0x08000) #define SONIC_BASE (IO_BASE + 0x0a000) #define SCC_BASE (IO_BASE + 0x0c020) #define ESP_BASE (IO_BASE + 0x10000) #define ESP_PDMA (IO_BASE + 0x10100) #define ASC_BASE (IO_BASE + 0x14000) #define SWIM_BASE (IO_BASE + 0x1E000) #define NUBUS_SUPER_SLOT_BASE 0x60000000 #define NUBUS_SLOT_BASE 0xf0000000 /* * the video base, whereas it a Nubus address, * is needed by the kernel to have early display and * thus provided by the bootloader */ #define VIDEO_BASE 0xf9001000 #define MAC_CLOCK 3686418 /* * The GLUE (General Logic Unit) is an Apple custom integrated circuit chip * that performs a variety of functions (RAM management, clock generation, ...). * The GLUE chip receives interrupt requests from various devices, * assign priority to each, and asserts one or more interrupt line to the * CPU. */ typedef struct { M68kCPU *cpu; uint8_t ipr; } GLUEState; static void GLUE_set_irq(void *opaque, int irq, int level) { GLUEState *s = opaque; int i; if (level) { s->ipr |= 1 << irq; } else { s->ipr &= ~(1 << irq); } for (i = 7; i >= 0; i--) { if ((s->ipr >> i) & 1) { m68k_set_irq_level(s->cpu, i + 1, i + 25); return; } } m68k_set_irq_level(s->cpu, 0, 0); } static void main_cpu_reset(void *opaque) { M68kCPU *cpu = opaque; CPUState *cs = CPU(cpu); cpu_reset(cs); cpu->env.aregs[7] = ldl_phys(cs->as, 0); cpu->env.pc = ldl_phys(cs->as, 4); } static uint8_t fake_mac_rom[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* offset: 0xa - mac_reset */ /* via2[vDirB] |= VIA2B_vPower */ 0x20, 0x7C, 0x50, 0xF0, 0x24, 0x00, /* moveal VIA2_BASE+vDirB,%a0 */ 0x10, 0x10, /* moveb %a0@,%d0 */ 0x00, 0x00, 0x00, 0x04, /* orib #4,%d0 */ 0x10, 0x80, /* moveb %d0,%a0@ */ /* via2[vBufB] &= ~VIA2B_vPower */ 0x20, 0x7C, 0x50, 0xF0, 0x20, 0x00, /* moveal VIA2_BASE+vBufB,%a0 */ 0x10, 0x10, /* moveb %a0@,%d0 */ 0x02, 0x00, 0xFF, 0xFB, /* andib #-5,%d0 */ 0x10, 0x80, /* moveb %d0,%a0@ */ /* while (true) ; */ 0x60, 0xFE /* bras [self] */ }; static void q800_init(MachineState *machine) { M68kCPU *cpu = NULL; int linux_boot; int32_t kernel_size; uint64_t elf_entry; char *filename; int bios_size; ram_addr_t initrd_base; int32_t initrd_size; MemoryRegion *rom; MemoryRegion *io; const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1; int i; ram_addr_t ram_size = machine->ram_size; const char *kernel_filename = machine->kernel_filename; const char *initrd_filename = machine->initrd_filename; const char *kernel_cmdline = machine->kernel_cmdline; hwaddr parameters_base; CPUState *cs; DeviceState *dev; DeviceState *via_dev; SysBusESPState *sysbus_esp; ESPState *esp; SysBusDevice *sysbus; BusState *adb_bus; NubusBus *nubus; GLUEState *irq; qemu_irq *pic; DriveInfo *dinfo; linux_boot = (kernel_filename != NULL); if (ram_size > 1 * GiB) { error_report("Too much memory for this machine: %" PRId64 " MiB, " "maximum 1024 MiB", ram_size / MiB); exit(1); } /* init CPUs */ cpu = M68K_CPU(cpu_create(machine->cpu_type)); qemu_register_reset(main_cpu_reset, cpu); /* RAM */ memory_region_add_subregion(get_system_memory(), 0, machine->ram); /* * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated * from IO_BASE + IO_SLICE to IO_BASE + IO_SIZE */ io = g_new(MemoryRegion, io_slice_nb); for (i = 0; i < io_slice_nb; i++) { char *name = g_strdup_printf("mac_m68k.io[%d]", i + 1); memory_region_init_alias(&io[i], NULL, name, get_system_memory(), IO_BASE, IO_SLICE); memory_region_add_subregion(get_system_memory(), IO_BASE + (i + 1) * IO_SLICE, &io[i]); g_free(name); } /* IRQ Glue */ irq = g_new0(GLUEState, 1); irq->cpu = cpu; pic = qemu_allocate_irqs(GLUE_set_irq, irq, 8); /* VIA */ via_dev = qdev_new(TYPE_MAC_VIA); dinfo = drive_get(IF_MTD, 0, 0); if (dinfo) { qdev_prop_set_drive(via_dev, "drive", blk_by_legacy_dinfo(dinfo), &error_abort); } sysbus = SYS_BUS_DEVICE(via_dev); sysbus_realize_and_unref(sysbus, &error_fatal); sysbus_mmio_map(sysbus, 0, VIA_BASE); qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0, pic[0]); qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1, pic[1]); adb_bus = qdev_get_child_bus(via_dev, "adb.0"); dev = qdev_new(TYPE_ADB_KEYBOARD); qdev_realize_and_unref(dev, adb_bus, &error_fatal); dev = qdev_new(TYPE_ADB_MOUSE); qdev_realize_and_unref(dev, adb_bus, &error_fatal); /* MACSONIC */ if (nb_nics > 1) { error_report("q800 can only have one ethernet interface"); exit(1); } qemu_check_nic_model(&nd_table[0], "dp83932"); /* * MacSonic driver needs an Apple MAC address * Valid prefix are: * 00:05:02 Apple * 00:80:19 Dayna Communications, Inc. * 00:A0:40 Apple * 08:00:07 Apple * (Q800 use the last one) */ nd_table[0].macaddr.a[0] = 0x08; nd_table[0].macaddr.a[1] = 0x00; nd_table[0].macaddr.a[2] = 0x07; dev = qdev_new("dp8393x"); qdev_set_nic_properties(dev, &nd_table[0]); qdev_prop_set_uint8(dev, "it_shift", 2); qdev_prop_set_bit(dev, "big_endian", true); object_property_set_link(OBJECT(dev), OBJECT(get_system_memory()), "dma_mr", &error_abort); sysbus = SYS_BUS_DEVICE(dev); sysbus_realize_and_unref(sysbus, &error_fatal); sysbus_mmio_map(sysbus, 0, SONIC_BASE); sysbus_mmio_map(sysbus, 1, SONIC_PROM_BASE); sysbus_connect_irq(sysbus, 0, pic[2]); /* SCC */ dev = qdev_new(TYPE_ESCC); qdev_prop_set_uint32(dev, "disabled", 0); qdev_prop_set_uint32(dev, "frequency", MAC_CLOCK); qdev_prop_set_uint32(dev, "it_shift", 1); qdev_prop_set_bit(dev, "bit_swap", true); qdev_prop_set_chr(dev, "chrA", serial_hd(0)); qdev_prop_set_chr(dev, "chrB", serial_hd(1)); qdev_prop_set_uint32(dev, "chnBtype", 0); qdev_prop_set_uint32(dev, "chnAtype", 0); sysbus = SYS_BUS_DEVICE(dev); sysbus_realize_and_unref(sysbus, &error_fatal); sysbus_connect_irq(sysbus, 0, pic[3]); sysbus_connect_irq(sysbus, 1, pic[3]); sysbus_mmio_map(sysbus, 0, SCC_BASE); /* SCSI */ dev = qdev_new(TYPE_ESP); sysbus_esp = ESP_STATE(dev); esp = &sysbus_esp->esp; esp->dma_memory_read = NULL; esp->dma_memory_write = NULL; esp->dma_opaque = NULL; sysbus_esp->it_shift = 4; esp->dma_enabled = 1; sysbus = SYS_BUS_DEVICE(dev); sysbus_realize_and_unref(sysbus, &error_fatal); sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in_named(via_dev, "via2-irq", VIA2_IRQ_SCSI_BIT)); sysbus_connect_irq(sysbus, 1, qdev_get_gpio_in_named(via_dev, "via2-irq", VIA2_IRQ_SCSI_DATA_BIT)); sysbus_mmio_map(sysbus, 0, ESP_BASE); sysbus_mmio_map(sysbus, 1, ESP_PDMA); scsi_bus_legacy_handle_cmdline(&esp->bus); /* SWIM floppy controller */ dev = qdev_new(TYPE_SWIM); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, SWIM_BASE); /* NuBus */ dev = qdev_new(TYPE_MAC_NUBUS_BRIDGE); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, NUBUS_SUPER_SLOT_BASE); sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, NUBUS_SLOT_BASE); nubus = MAC_NUBUS_BRIDGE(dev)->bus; /* framebuffer in nubus slot #9 */ dev = qdev_new(TYPE_NUBUS_MACFB); qdev_prop_set_uint32(dev, "width", graphic_width); qdev_prop_set_uint32(dev, "height", graphic_height); qdev_prop_set_uint8(dev, "depth", graphic_depth); qdev_realize_and_unref(dev, BUS(nubus), &error_fatal); cs = CPU(cpu); if (linux_boot) { uint64_t high; kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry, NULL, &high, NULL, 1, EM_68K, 0, 0); if (kernel_size < 0) { error_report("could not load kernel '%s'", kernel_filename); exit(1); } stl_phys(cs->as, 4, elf_entry); /* reset initial PC */ parameters_base = (high + 1) & ~1; BOOTINFO1(cs->as, parameters_base, BI_MACHTYPE, MACH_MAC); BOOTINFO1(cs->as, parameters_base, BI_FPUTYPE, Q800_FPU_ID); BOOTINFO1(cs->as, parameters_base, BI_MMUTYPE, Q800_MMU_ID); BOOTINFO1(cs->as, parameters_base, BI_CPUTYPE, Q800_CPU_ID); BOOTINFO1(cs->as, parameters_base, BI_MAC_CPUID, Q800_MAC_CPU_ID); BOOTINFO1(cs->as, parameters_base, BI_MAC_MODEL, Q800_MACHINE_ID); BOOTINFO1(cs->as, parameters_base, BI_MAC_MEMSIZE, ram_size >> 20); /* in MB */ BOOTINFO2(cs->as, parameters_base, BI_MEMCHUNK, 0, ram_size); BOOTINFO1(cs->as, parameters_base, BI_MAC_VADDR, VIDEO_BASE); BOOTINFO1(cs->as, parameters_base, BI_MAC_VDEPTH, graphic_depth); BOOTINFO1(cs->as, parameters_base, BI_MAC_VDIM, (graphic_height << 16) | graphic_width); BOOTINFO1(cs->as, parameters_base, BI_MAC_VROW, (graphic_width * graphic_depth + 7) / 8); BOOTINFO1(cs->as, parameters_base, BI_MAC_SCCBASE, SCC_BASE); rom = g_malloc(sizeof(*rom)); memory_region_init_ram_ptr(rom, NULL, "m68k_fake_mac.rom", sizeof(fake_mac_rom), fake_mac_rom); memory_region_set_readonly(rom, true); memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom); if (kernel_cmdline) { BOOTINFOSTR(cs->as, parameters_base, BI_COMMAND_LINE, kernel_cmdline); } /* load initrd */ if (initrd_filename) { initrd_size = get_image_size(initrd_filename); if (initrd_size < 0) { error_report("could not load initial ram disk '%s'", initrd_filename); exit(1); } initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK; load_image_targphys(initrd_filename, initrd_base, ram_size - initrd_base); BOOTINFO2(cs->as, parameters_base, BI_RAMDISK, initrd_base, initrd_size); } else { initrd_base = 0; initrd_size = 0; } BOOTINFO0(cs->as, parameters_base, BI_LAST); } else { uint8_t *ptr; /* allocate and load BIOS */ rom = g_malloc(sizeof(*rom)); memory_region_init_rom(rom, NULL, "m68k_mac.rom", MACROM_SIZE, &error_abort); if (bios_name == NULL) { bios_name = MACROM_FILENAME; } filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom); /* Load MacROM binary */ if (filename) { bios_size = load_image_targphys(filename, MACROM_ADDR, MACROM_SIZE); g_free(filename); } else { bios_size = -1; } /* Remove qtest_enabled() check once firmware files are in the tree */ if (!qtest_enabled()) { if (bios_size < 0 || bios_size > MACROM_SIZE) { error_report("could not load MacROM '%s'", bios_name); exit(1); } ptr = rom_ptr(MACROM_ADDR, MACROM_SIZE); stl_phys(cs->as, 0, ldl_p(ptr)); /* reset initial SP */ stl_phys(cs->as, 4, MACROM_ADDR + ldl_p(ptr + 4)); /* reset initial PC */ } } } static void q800_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); mc->desc = "Macintosh Quadra 800"; mc->init = q800_init; mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040"); mc->max_cpus = 1; mc->block_default_type = IF_SCSI; mc->default_ram_id = "m68k_mac.ram"; } static const TypeInfo q800_machine_typeinfo = { .name = MACHINE_TYPE_NAME("q800"), .parent = TYPE_MACHINE, .class_init = q800_machine_class_init, }; static void q800_machine_register_types(void) { type_register_static(&q800_machine_typeinfo); } type_init(q800_machine_register_types)