Re: [Qemu-devel] [PATCH v4 11/11] hw/m68k: define Macintosh Quadra 800

[Mark Cave-Ayland]

On 23/10/2018 14:16, Philippe Mathieu-Daudé wrote:

> Hi Laurent, Mark,
> 
> On 18/10/18 20:28, Mark Cave-Ayland wrote:
>> From: Laurent Vivier <address@hidden>
>>
>> Co-developed-by: Mark Cave-Ayland <address@hidden>
>> Signed-off-by: Mark Cave-Ayland <address@hidden>
>> Signed-off-by: Laurent Vivier <address@hidden>
>> ---
>>   MAINTAINERS                      |  19 ++
>>   default-configs/m68k-softmmu.mak |  14 ++
>>   hw/intc/Makefile.objs            |   1 +
>>   hw/intc/q800_irq.c               |  73 ++++++++
>>   hw/m68k/Makefile.objs            |   6 +-
>>   hw/m68k/bootinfo.h               | 100 +++++++++++
>>   hw/m68k/q800.c                   | 367 
>> +++++++++++++++++++++++++++++++++++++++
>>   include/hw/intc/q800_irq.h       |  39 +++++
>>   8 files changed, 617 insertions(+), 2 deletions(-)
>>   create mode 100644 hw/intc/q800_irq.c
>>   create mode 100644 hw/m68k/bootinfo.h
>>   create mode 100644 hw/m68k/q800.c
>>   create mode 100644 include/hw/intc/q800_irq.h
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 40672c4eba..552c53394b 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -718,6 +718,25 @@ F: hw/char/mcf_uart.c
>>   F: hw/net/mcf_fec.c
>>   F: include/hw/m68k/mcf*.h
>>   +q800
>> +M: Laurent Vivier <address@hidden>
>> +S: Maintained
>> +F: hw/audio/asc.c
>> +F: hw/block/swim.c
>> +F: hw/m68k/bootinfo.h
>> +F: hw/display/macfb-template.h
>> +F: hw/display/macfb.c
>> +F: hw/intc/q800_irq.c
>> +F: hw/m68k/q800.c
>> +F: hw/misc/mac_via.c
>> +F: hw/nubus/*
>> +F: include/hw/audio/asc.h
>> +F: include/hw/block/swim.h
>> +F: include/hw/display/macfb.h
>> +F: include/hw/intc/q800_irq.h
>> +F: include/hw/misc/mac_via.h
>> +F: include/hw/nubus/*
>> +
>>   MicroBlaze Machines
>>   -------------------
>>   petalogix_s3adsp1800
>> diff --git a/default-configs/m68k-softmmu.mak 
>> b/default-configs/m68k-softmmu.mak
>> index 60f7cdfbf2..993644aa42 100644
>> --- a/default-configs/m68k-softmmu.mak
>> +++ b/default-configs/m68k-softmmu.mak
>> @@ -2,3 +2,17 @@
>>     CONFIG_COLDFIRE=y
>>   CONFIG_PTIMER=y
>> +CONFIG_ESCC=y
>> +CONFIG_FRAMEBUFFER=y
>> +CONFIG_ADB=y
>> +CONFIG_MOS6522=y
>> +CONFIG_MAC_VIA=y
>> +CONFIG_Q800_IRQ=y
>> +CONFIG_MAC=y
>> +CONFIG_SCSI=y
>> +CONFIG_ESP=y
>> +CONFIG_ASC=y
>> +CONFIG_MACFB=y
>> +CONFIG_NUBUS=y
>> +CONFIG_DP8393X=y
>> +CONFIG_SWIM=y
>> diff --git a/hw/intc/Makefile.objs b/hw/intc/Makefile.objs
>> index 0e9963f5ee..030967a0b3 100644
>> --- a/hw/intc/Makefile.objs
>> +++ b/hw/intc/Makefile.objs
>> @@ -46,3 +46,4 @@ obj-$(CONFIG_ARM_GIC) += arm_gicv3_cpuif.o
>>   obj-$(CONFIG_MIPS_CPS) += mips_gic.o
>>   obj-$(CONFIG_NIOS2) += nios2_iic.o
>>   obj-$(CONFIG_OMPIC) += ompic.o
>> +obj-$(CONFIG_Q800_IRQ) += q800_irq.o
>> diff --git a/hw/intc/q800_irq.c b/hw/intc/q800_irq.c
>> new file mode 100644
>> index 0000000000..ec9d542d2e
>> --- /dev/null
>> +++ b/hw/intc/q800_irq.c
>> @@ -0,0 +1,73 @@
>> +/*
>> + * 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 "cpu.h"
>> +#include "hw/intc/q800_irq.h"
>> +
>> +
>> +static void q800_set_irq(void *opaque, int irq, int level)
>> +{
>> +    Q800IRQControllerState *s = opaque;
>> +    int i;
>> +
>> +
>> +    if (level) {
>> +        s->ipr |= 1 << irq;
>> +    } else {
>> +        s->ipr &= ~(1 << irq);
>> +    }
>> +
>> +    for (i = 7; i >= 0; i--) {
> 
> Please add definition for magic numbers,
> 
>> +        if ((s->ipr >> i) & 1) {
>> +            m68k_set_irq_level(s->cpu, i + 1, i + 25);
> 
> ditto.
> 
>> +            return;
>> +        }
>> +    }
>> +    m68k_set_irq_level(s->cpu, 0, 0);
>> +}
>> +
>> +static void q800_irq_init(Object *obj)
>> +{
>> +    Q800IRQControllerState *s = Q800_IRQC(obj);
>> +
>> +    qdev_init_gpio_in(DEVICE(obj), q800_set_irq, 8);
> 
> Ditto.

The interrupt "controller" here looks like a simple priority encoder - Laurent, 
is
this the case? If so, what would be a suitable name for this define?

>> +
>> +    object_property_add_link(obj, "cpu", TYPE_M68K_CPU,
>> +                             (Object **) &s->cpu,
>> +                             qdev_prop_allow_set_link_before_realize,
>> +                             0, NULL);
>> +}
>> +
>> +static const TypeInfo q800_irq_type_info = {
>> +    .name = TYPE_Q800_IRQC,
>> +    .parent = TYPE_SYS_BUS_DEVICE,
>> +    .instance_size = sizeof(Q800IRQControllerState),
>> +    .instance_init = q800_irq_init,
>> +};
>> +
>> +static void q800_irq_register_types(void)
>> +{
>> +    type_register_static(&q800_irq_type_info);
>> +}
>> +
>> +type_init(q800_irq_register_types);
>> diff --git a/hw/m68k/Makefile.objs b/hw/m68k/Makefile.objs
>> index d1f089c08a..18ebf1937a 100644
>> --- a/hw/m68k/Makefile.objs
>> +++ b/hw/m68k/Makefile.objs
>> @@ -1,2 +1,4 @@
>> -obj-y += an5206.o mcf5208.o
>> -obj-y += mcf5206.o mcf_intc.o
>> +obj-$(CONFIG_COLDFIRE) += an5206.o mcf5208.o
>> +obj-$(CONFIG_MAC) += q800.o
>> +
>> +obj-$(CONFIG_COLDFIRE) += mcf5206.o mcf_intc.o
>> diff --git a/hw/m68k/bootinfo.h b/hw/m68k/bootinfo.h
>> new file mode 100644
>> index 0000000000..6584775f6d
>> --- /dev/null
>> +++ b/hw/m68k/bootinfo.h
>> @@ -0,0 +1,100 @@
>> +struct bi_record {
>> +    uint16_t tag;        /* tag ID */
>> +    uint16_t size;       /* size of record */
>> +    uint32_t data[0];    /* data */
>> +};
>> +
>> +/* machine independent tags */
>> +
>> +#define BI_LAST         0x0000 /* last record */
>> +#define BI_MACHTYPE     0x0001 /* machine type (u_long) */
>> +#define BI_CPUTYPE      0x0002 /* cpu type (u_long) */
>> +#define BI_FPUTYPE      0x0003 /* fpu type (u_long) */
>> +#define BI_MMUTYPE      0x0004 /* mmu type (u_long) */
>> +#define BI_MEMCHUNK     0x0005 /* memory chunk address and size */
>> +                               /* (struct mem_info) */
>> +#define BI_RAMDISK      0x0006 /* ramdisk address and size */
>> +                               /* (struct mem_info) */
>> +#define BI_COMMAND_LINE 0x0007 /* kernel command line parameters */
>> +                               /* (string) */
>> +
>> +/*  Macintosh-specific tags (all u_long) */
>> +
>> +#define BI_MAC_MODEL    0x8000  /* Mac Gestalt ID (model type) */
>> +#define BI_MAC_VADDR    0x8001  /* Mac video base address */
>> +#define BI_MAC_VDEPTH   0x8002  /* Mac video depth */
>> +#define BI_MAC_VROW     0x8003  /* Mac video rowbytes */
>> +#define BI_MAC_VDIM     0x8004  /* Mac video dimensions */
>> +#define BI_MAC_VLOGICAL 0x8005  /* Mac video logical base */
>> +#define BI_MAC_SCCBASE  0x8006  /* Mac SCC base address */
>> +#define BI_MAC_BTIME    0x8007  /* Mac boot time */
>> +#define BI_MAC_GMTBIAS  0x8008  /* Mac GMT timezone offset */
>> +#define BI_MAC_MEMSIZE  0x8009  /* Mac RAM size (sanity check) */
>> +#define BI_MAC_CPUID    0x800a  /* Mac CPU type (sanity check) */
>> +#define BI_MAC_ROMBASE  0x800b  /* Mac system ROM base address */
>> +
>> +/*  Macintosh hardware profile data */
>> +
>> +#define BI_MAC_VIA1BASE 0x8010  /* Mac VIA1 base address (always present) */
>> +#define BI_MAC_VIA2BASE 0x8011  /* Mac VIA2 base address (type varies) */
>> +#define BI_MAC_VIA2TYPE 0x8012  /* Mac VIA2 type (VIA, RBV, OSS) */
>> +#define BI_MAC_ADBTYPE  0x8013  /* Mac ADB interface type */
>> +#define BI_MAC_ASCBASE  0x8014  /* Mac Apple Sound Chip base address */
>> +#define BI_MAC_SCSI5380 0x8015  /* Mac NCR 5380 SCSI (base address, multi) 
>> */
>> +#define BI_MAC_SCSIDMA  0x8016  /* Mac SCSI DMA (base address) */
>> +#define BI_MAC_SCSI5396 0x8017  /* Mac NCR 53C96 SCSI (base address, multi) 
>> */
>> +#define BI_MAC_IDETYPE  0x8018  /* Mac IDE interface type */
>> +#define BI_MAC_IDEBASE  0x8019  /* Mac IDE interface base address */
>> +#define BI_MAC_NUBUS    0x801a  /* Mac Nubus type (none, regular, pseudo) */
>> +#define BI_MAC_SLOTMASK 0x801b  /* Mac Nubus slots present */
>> +#define BI_MAC_SCCTYPE  0x801c  /* Mac SCC serial type (normal, IOP) */
>> +#define BI_MAC_ETHTYPE  0x801d  /* Mac builtin ethernet type (Sonic, MACE */
>> +#define BI_MAC_ETHBASE  0x801e  /* Mac builtin ethernet base address */
>> +#define BI_MAC_PMU      0x801f  /* Mac power management / poweroff hardware 
>> */
>> +#define BI_MAC_IOP_SWIM 0x8020  /* Mac SWIM floppy IOP */
>> +#define BI_MAC_IOP_ADB  0x8021  /* Mac ADB IOP */
>> +
>> +#define BOOTINFO0(as, base, id) \
>> +    do { \
>> +        stw_phys(as, base, id); \
>> +        base += 2; \
>> +        stw_phys(as, base, sizeof(struct bi_record)); \
>> +        base += 2; \
>> +    } while (0)
>> +
>> +#define BOOTINFO1(as, base, id, value) \
>> +    do { \
>> +        stw_phys(as, base, id); \
>> +        base += 2; \
>> +        stw_phys(as, base, sizeof(struct bi_record) + 4); \
>> +        base += 2; \
>> +        stl_phys(as, base, value); \
>> +        base += 4; \
>> +    } while (0)
>> +
>> +#define BOOTINFO2(as, base, id, value1, value2) \
>> +    do { \
>> +        stw_phys(as, base, id); \
>> +        base += 2; \
>> +        stw_phys(as, base, sizeof(struct bi_record) + 8); \
>> +        base += 2; \
>> +        stl_phys(as, base, value1); \
>> +        base += 4; \
>> +        stl_phys(as, base, value2); \
>> +        base += 4; \
>> +    } while (0)
>> +
>> +#define BOOTINFOSTR(as, base, id, string) \
>> +    do { \
>> +        int i; \
>> +        stw_phys(as, base, id); \
>> +        base += 2; \
>> +        stw_phys(as, base, \
>> +                 (sizeof(struct bi_record) + strlen(string) + 2) & ~1); \
>> +        base += 2; \
>> +        for (i = 0; string[i]; i++) { \
>> +            stb_phys(as, base++, string[i]); \
>> +        } \
>> +        stb_phys(as, base++, 0); \
>> +        base = (parameters_base + 1) & ~1; \
>> +    } while (0)
>> diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
>> new file mode 100644
>> index 0000000000..bbf34262f0
>> --- /dev/null
>> +++ b/hw/m68k/q800.c
>> @@ -0,0 +1,367 @@
>> +/*
>> + * 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 "sysemu/sysemu.h"
>> +#include "cpu.h"
>> +#include "hw/hw.h"
>> +#include "hw/boards.h"
>> +#include "elf.h"
>> +#include "hw/loader.h"
>> +#include "hw/display/framebuffer.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/audio/asc.h"
>> +#include "hw/nubus/mac-nubus-bridge.h"
>> +#include "hw/display/macfb.h"
>> +#include "hw/intc/q800_irq.h"
>> +#include "hw/block/swim.h"
>> +#include "net/net.h"
>> +#include "qapi/error.h"
>> +#include "sysemu/qtest.h"
>> +
>> +#define MACROM_ADDR     0x40000000
>> +#define MACROM_SIZE     0x00100000
>> +
>> +/*
>> + *              .ident          = MAC_MODEL_Q800,
>> + *              .name           = "Quadra 800",
>> + *              .adb_type       = MAC_ADB_II,
>> + *              .via_type       = MAC_VIA_QUADRA,
>> + *              .scsi_type      = MAC_SCSI_QUADRA,
>> + *              .scc_type       = MAC_SCC_QUADRA,
>> + *              .ether_type     = MAC_ETHER_SONIC,
>> + *              .nubus_type     = MAC_NUBUS
>> + */
> 
> =)
> 
>> +
>> +#define MACROM_FILENAME "MacROM.bin"
> 
> From the cover "it doesn't boot a MacROM" but hopefully one day it will ;)

Indeed that is my understanding too :)

> Which makes me think the notes in the cover about how to run the machine 
> should be in
> this patch description.

I've added these into the description for the next version.

>> +
>> +#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 VIA_BASE              0x50f00000
>> +#define SONIC_PROM_BASE       0x50f08000
>> +#define SONIC_BASE            0x50f0a000
>> +#define SCC_BASE              0x50f0c020
>> +#define ESP_BASE              0x50f10000
>> +#define ESP_PDMA              0x50f10100
>> +#define ASC_BASE              0x50F14000
>> +#define SWIM_BASE             0x50F1E000
>> +#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
>> +
>> +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 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 *ram;
>> +    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, *pic_dev;
>> +    SysBusESPState *sysbus_esp;
>> +    ESPState *esp;
>> +    SysBusDevice *sysbus;
>> +    BusState *adb_bus;
>> +    NubusBus *nubus;
>> +
>> +    linux_boot = (kernel_filename != NULL);
>> +
>> +    /* init CPUs */
>> +    cpu = M68K_CPU(cpu_create(machine->cpu_type));
>> +    qemu_register_reset(main_cpu_reset, cpu);
>> +
>> +    ram = g_malloc(sizeof(*ram));
>> +    memory_region_init_ram(ram, NULL, "m68k_mac.ram", ram_size, 
>> &error_abort);
>> +    memory_region_add_subregion(get_system_memory(), 0, ram);
>> +
>> +    /* IRQ controller */
>> +
>> +    pic_dev = qdev_create(NULL, TYPE_Q800_IRQC);
>> +    object_property_set_link(OBJECT(pic_dev), OBJECT(cpu), "cpu",
>> +                             &error_abort);
>> +    qdev_init_nofail(pic_dev);
>> +
>> +    /* VIA */
>> +
>> +    via_dev = qdev_create(NULL, TYPE_MAC_VIA);
>> +    qdev_init_nofail(via_dev);
>> +    sysbus = SYS_BUS_DEVICE(via_dev);
>> +    sysbus_mmio_map(sysbus, 0, VIA_BASE);
>> +    qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0,
>> +                                qdev_get_gpio_in(pic_dev, 0));
>> +    qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1,
>> +                                qdev_get_gpio_in(pic_dev, 1));
>> +
>> +    adb_bus = qdev_get_child_bus(via_dev, "adb.0");
>> +    dev = qdev_create(adb_bus, TYPE_ADB_KEYBOARD);
>> +    qdev_init_nofail(dev);
>> +    dev = qdev_create(adb_bus, TYPE_ADB_MOUSE);
>> +    qdev_init_nofail(dev);
>> +
>> +    /* 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_create(NULL, "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);
>> +    qdev_prop_set_ptr(dev, "dma_mr", get_system_memory());
>> +    qdev_init_nofail(dev);
>> +    sysbus = SYS_BUS_DEVICE(dev);
>> +    sysbus_mmio_map(sysbus, 0, SONIC_BASE);
>> +    sysbus_mmio_map(sysbus, 1, SONIC_PROM_BASE);
>> +    sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(pic_dev, 2));
>> +
>> +    /* SCC */
>> +
>> +    dev = qdev_create(NULL, 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);
>> +    qdev_init_nofail(dev);
>> +    sysbus = SYS_BUS_DEVICE(dev);
>> +    sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(pic_dev, 3));
>> +    sysbus_connect_irq(sysbus, 1, qdev_get_gpio_in(pic_dev, 3));
>> +    sysbus_mmio_map(sysbus, 0, SCC_BASE);
>> +
>> +    /* SCSI */
>> +
>> +    dev = qdev_create(NULL, 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;
>> +    qdev_init_nofail(dev);
>> +
>> +    sysbus = SYS_BUS_DEVICE(dev);
>> +    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);
>> +
>> +    /* Apple Sound Chip */
>> +
>> +    dev = qdev_create(NULL, TYPE_ASC);
>> +    qdev_prop_set_uint8(dev, "asctype", ASC_TYPE_ASC);
>> +    qdev_init_nofail(dev);
>> +    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, ASC_BASE);
>> +    sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
>> +                       qdev_get_gpio_in_named(via_dev, "via2-irq",
>> +                                              VIA2_IRQ_ASC_BIT));
>> +
>> +    /* SWIM floppy controller */
>> +
>> +    dev = qdev_create(NULL, TYPE_SWIM);
>> +    qdev_init_nofail(dev);
>> +    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, SWIM_BASE);
>> +
>> +    /* NuBus */
>> +
>> +    dev = qdev_create(NULL, TYPE_MAC_NUBUS_BRIDGE);
>> +    qdev_init_nofail(dev);
>> +    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_create(BUS(nubus), 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_init_nofail(dev);
>> +
>> +    cs = CPU(cpu);
>> +    if (linux_boot) {
>> +        uint64_t high;
>> +        kernel_size = load_elf(kernel_filename, NULL, NULL,
>> +                               &elf_entry, NULL, &high, 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);
>> +
>> +        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_ram(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_set_readonly(rom, true);
>> +        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_init(MachineClass *mc)
>> +{
>> +    mc->desc = "Macintosh Quadra 800";
>> +    mc->init = q800_init;
>> +    mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040");
>> +    mc->max_cpus = 1;
>> +    mc->is_default = 0;
>> +    mc->block_default_type = IF_SCSI;
>> +}
>> +
>> +DEFINE_MACHINE("q800", q800_machine_init)
>> diff --git a/include/hw/intc/q800_irq.h b/include/hw/intc/q800_irq.h
>> new file mode 100644
>> index 0000000000..91c2de1cc5
>> --- /dev/null
>> +++ b/include/hw/intc/q800_irq.h
>> @@ -0,0 +1,39 @@
>> +/*
>> + * QEMU Motorla 680x0 Macintosh hardware System Emulator
> 
> If possible, link to the datasheet (backup'd on QEMU wiki).
> 
>> + *
>> + * 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.
>> + */
>> +
>> +#ifndef Q800_IRQ_H
>> +#define Q800_IRQ_H
>> +
>> +#include "hw/sysbus.h"
>> +
>> +#define TYPE_Q800_IRQC "q800-irq-controller"
>> +#define Q800_IRQC(obj) OBJECT_CHECK(Q800IRQControllerState, (obj), \
>> +                                    TYPE_Q800_IRQC)
>> +
>> +typedef struct Q800IRQControllerState {
>> +    SysBusDevice parent_obj;
>> +
>> +    M68kCPU *cpu;
>> +    uint8_t ipr;
>> +} Q800IRQControllerState;
>> +
>> +#endif
>>
> 
> Patch looks good otherwise.

ATB,

Mark.