Archipelago » qemu

/*

 * QEMU Sun4m & Sun4d & Sun4c System Emulator

 *

 * Copyright (c) 2003-2005 Fabrice Bellard

 *

 * 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 "sysbus.h"

#include "qemu-timer.h"

#include "sun4m.h"

#include "nvram.h"

#include "sparc32_dma.h"

#include "fdc.h"

#include "sysemu.h"

#include "net.h"

#include "boards.h"

#include "firmware_abi.h"

#include "esp.h"

#include "pc.h"

#include "isa.h"

#include "fw_cfg.h"

#include "escc.h"

#include "empty_slot.h"

#include "qdev-addr.h"

#include "loader.h"

#include "elf.h"

#include "blockdev.h"

//#define DEBUG_IRQ

/*

 * Sun4m architecture was used in the following machines:

 *

 * SPARCserver 6xxMP/xx

 * SPARCclassic (SPARCclassic Server)(SPARCstation LC) (4/15),

 * SPARCclassic X (4/10)

 * SPARCstation LX/ZX (4/30)

 * SPARCstation Voyager

 * SPARCstation 10/xx, SPARCserver 10/xx

 * SPARCstation 5, SPARCserver 5

 * SPARCstation 20/xx, SPARCserver 20

 * SPARCstation 4

 *

 * Sun4d architecture was used in the following machines:

 *

 * SPARCcenter 2000

 * SPARCserver 1000

 *

 * Sun4c architecture was used in the following machines:

 * SPARCstation 1/1+, SPARCserver 1/1+

 * SPARCstation SLC

 * SPARCstation IPC

 * SPARCstation ELC

 * SPARCstation IPX

 *

 * See for example: http://www.sunhelp.org/faq/sunref1.html

 */

#ifdef DEBUG_IRQ

#define DPRINTF(fmt, ...)                                       \

    do { printf("CPUIRQ: " fmt , ## __VA_ARGS__); } while (0)

#else

#define DPRINTF(fmt, ...)

#endif

#define KERNEL_LOAD_ADDR     0x00004000

#define CMDLINE_ADDR         0x007ff000

#define INITRD_LOAD_ADDR     0x00800000

#define PROM_SIZE_MAX        (1024 * 1024)

#define PROM_VADDR           0xffd00000

#define PROM_FILENAME        "openbios-sparc32"

#define CFG_ADDR             0xd00000510ULL

#define FW_CFG_SUN4M_DEPTH   (FW_CFG_ARCH_LOCAL + 0x00)

#define MAX_CPUS 16

#define MAX_PILS 16

#define MAX_VSIMMS 4

#define ESCC_CLOCK 4915200

struct sun4m_hwdef {

    target_phys_addr_t iommu_base, iommu_pad_base, iommu_pad_len, slavio_base;

    target_phys_addr_t intctl_base, counter_base, nvram_base, ms_kb_base;

    target_phys_addr_t serial_base, fd_base;

    target_phys_addr_t afx_base, idreg_base, dma_base, esp_base, le_base;

    target_phys_addr_t tcx_base, cs_base, apc_base, aux1_base, aux2_base;

    target_phys_addr_t bpp_base, dbri_base, sx_base;

    struct {

        target_phys_addr_t reg_base, vram_base;

    } vsimm[MAX_VSIMMS];

    target_phys_addr_t ecc_base;

    uint32_t ecc_version;

    uint8_t nvram_machine_id;

    uint16_t machine_id;

    uint32_t iommu_version;

    uint64_t max_mem;

    const char * const default_cpu_model;

};

#define MAX_IOUNITS 5

struct sun4d_hwdef {

    target_phys_addr_t iounit_bases[MAX_IOUNITS], slavio_base;

    target_phys_addr_t counter_base, nvram_base, ms_kb_base;

    target_phys_addr_t serial_base;

    target_phys_addr_t espdma_base, esp_base;

    target_phys_addr_t ledma_base, le_base;

    target_phys_addr_t tcx_base;

    target_phys_addr_t sbi_base;

    uint8_t nvram_machine_id;

    uint16_t machine_id;

    uint32_t iounit_version;

    uint64_t max_mem;

    const char * const default_cpu_model;

};

struct sun4c_hwdef {

    target_phys_addr_t iommu_base, slavio_base;

    target_phys_addr_t intctl_base, counter_base, nvram_base, ms_kb_base;

    target_phys_addr_t serial_base, fd_base;

    target_phys_addr_t idreg_base, dma_base, esp_base, le_base;

    target_phys_addr_t tcx_base, aux1_base;

    uint8_t nvram_machine_id;

    uint16_t machine_id;

    uint32_t iommu_version;

    uint64_t max_mem;

    const char * const default_cpu_model;

};

int DMA_get_channel_mode (int nchan)

{

    return 0;

}

int DMA_read_memory (int nchan, void *buf, int pos, int size)

{

    return 0;

}

int DMA_write_memory (int nchan, void *buf, int pos, int size)

{

    return 0;

}

void DMA_hold_DREQ (int nchan) {}

void DMA_release_DREQ (int nchan) {}

void DMA_schedule(int nchan) {}

void DMA_init(int high_page_enable, qemu_irq *cpu_request_exit)

{

}

void DMA_register_channel (int nchan,

                           DMA_transfer_handler transfer_handler,

                           void *opaque)

{

}

static int fw_cfg_boot_set(void *opaque, const char *boot_device)

{

    fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);

    return 0;

}

static void nvram_init(M48t59State *nvram, uint8_t *macaddr,

                       const char *cmdline, const char *boot_devices,

                       ram_addr_t RAM_size, uint32_t kernel_size,

                       int width, int height, int depth,

                       int nvram_machine_id, const char *arch)

{

    unsigned int i;

    uint32_t start, end;

    uint8_t image[0x1ff0];

    struct OpenBIOS_nvpart_v1 *part_header;

    memset(image, '\0', sizeof(image));

    start = 0;

    // OpenBIOS nvram variables

    // Variable partition

    part_header = (struct OpenBIOS_nvpart_v1 *)&image[start];

    part_header->signature = OPENBIOS_PART_SYSTEM;

    pstrcpy(part_header->name, sizeof(part_header->name), "system");

    end = start + sizeof(struct OpenBIOS_nvpart_v1);

    for (i = 0; i < nb_prom_envs; i++)

        end = OpenBIOS_set_var(image, end, prom_envs[i]);

    // End marker

    image[end++] = '\0';

    end = start + ((end - start + 15) & ~15);

    OpenBIOS_finish_partition(part_header, end - start);

    // free partition

    start = end;

    part_header = (struct OpenBIOS_nvpart_v1 *)&image[start];

    part_header->signature = OPENBIOS_PART_FREE;

    pstrcpy(part_header->name, sizeof(part_header->name), "free");

    end = 0x1fd0;

    OpenBIOS_finish_partition(part_header, end - start);

    Sun_init_header((struct Sun_nvram *)&image[0x1fd8], macaddr,

                    nvram_machine_id);

    for (i = 0; i < sizeof(image); i++)

        m48t59_write(nvram, i, image[i]);

}

static DeviceState *slavio_intctl;

void pic_info(Monitor *mon)

{

    if (slavio_intctl)

        slavio_pic_info(mon, slavio_intctl);

}

void irq_info(Monitor *mon)

{

    if (slavio_intctl)

        slavio_irq_info(mon, slavio_intctl);

}

void cpu_check_irqs(CPUState *env)

{

    if (env->pil_in && (env->interrupt_index == 0 ||

                        (env->interrupt_index & ~15) == TT_EXTINT)) {

        unsigned int i;

        for (i = 15; i > 0; i--) {

            if (env->pil_in & (1 << i)) {

                int old_interrupt = env->interrupt_index;

                env->interrupt_index = TT_EXTINT | i;

                if (old_interrupt != env->interrupt_index) {

                    DPRINTF("Set CPU IRQ %d\n", i);

                    cpu_interrupt(env, CPU_INTERRUPT_HARD);

                }

                break;

            }

        }

    } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {

        DPRINTF("Reset CPU IRQ %d\n", env->interrupt_index & 15);

        env->interrupt_index = 0;

        cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);

    }

}

static void cpu_set_irq(void *opaque, int irq, int level)

{

    CPUState *env = opaque;

    if (level) {

        DPRINTF("Raise CPU IRQ %d\n", irq);

        env->halted = 0;

        env->pil_in |= 1 << irq;

        cpu_check_irqs(env);

    } else {

        DPRINTF("Lower CPU IRQ %d\n", irq);

        env->pil_in &= ~(1 << irq);

        cpu_check_irqs(env);

    }

}

static void dummy_cpu_set_irq(void *opaque, int irq, int level)

{

}

static void main_cpu_reset(void *opaque)

{

    CPUState *env = opaque;

    cpu_reset(env);

    env->halted = 0;

}

static void secondary_cpu_reset(void *opaque)

{

    CPUState *env = opaque;

    cpu_reset(env);

    env->halted = 1;

}

static void cpu_halt_signal(void *opaque, int irq, int level)

{

    if (level && cpu_single_env)

        cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HALT);

}

static uint64_t translate_kernel_address(void *opaque, uint64_t addr)

{

    return addr - 0xf0000000ULL;

}

static unsigned long sun4m_load_kernel(const char *kernel_filename,

                                       const char *initrd_filename,

                                       ram_addr_t RAM_size)

{

    int linux_boot;

    unsigned int i;

    long initrd_size, kernel_size;

    uint8_t *ptr;

    linux_boot = (kernel_filename != NULL);

    kernel_size = 0;

    if (linux_boot) {

        int bswap_needed;

#ifdef BSWAP_NEEDED

        bswap_needed = 1;

#else

        bswap_needed = 0;

#endif

        kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,

                               NULL, NULL, NULL, 1, ELF_MACHINE, 0);

        if (kernel_size < 0)

            kernel_size = load_aout(kernel_filename, KERNEL_LOAD_ADDR,

                                    RAM_size - KERNEL_LOAD_ADDR, bswap_needed,

                                    TARGET_PAGE_SIZE);

        if (kernel_size < 0)

            kernel_size = load_image_targphys(kernel_filename,

                                              KERNEL_LOAD_ADDR,

                                              RAM_size - KERNEL_LOAD_ADDR);

        if (kernel_size < 0) {

            fprintf(stderr, "qemu: could not load kernel '%s'\n",

                    kernel_filename);

            exit(1);

        }

        /* load initrd */

        initrd_size = 0;

        if (initrd_filename) {

            initrd_size = load_image_targphys(initrd_filename,

                                              INITRD_LOAD_ADDR,

                                              RAM_size - INITRD_LOAD_ADDR);

            if (initrd_size < 0) {

                fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",

                        initrd_filename);

                exit(1);

            }

        }

        if (initrd_size > 0) {

            for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {

                ptr = rom_ptr(KERNEL_LOAD_ADDR + i);

                if (ldl_p(ptr) == 0x48647253) { // HdrS

                    stl_p(ptr + 16, INITRD_LOAD_ADDR);

                    stl_p(ptr + 20, initrd_size);

                    break;

                }

            }

        }

    }

    return kernel_size;

}

static void *iommu_init(target_phys_addr_t addr, uint32_t version, qemu_irq irq)

{

    DeviceState *dev;

    SysBusDevice *s;

    dev = qdev_create(NULL, "iommu");

    qdev_prop_set_uint32(dev, "version", version);

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_connect_irq(s, 0, irq);

    sysbus_mmio_map(s, 0, addr);

    return s;

}

static void *sparc32_dma_init(target_phys_addr_t daddr, qemu_irq parent_irq,

                              void *iommu, qemu_irq *dev_irq)

{

    DeviceState *dev;

    SysBusDevice *s;

    dev = qdev_create(NULL, "sparc32_dma");

    qdev_prop_set_ptr(dev, "iommu_opaque", iommu);

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_connect_irq(s, 0, parent_irq);

    *dev_irq = qdev_get_gpio_in(dev, 0);

    sysbus_mmio_map(s, 0, daddr);

    return s;

}

static void lance_init(NICInfo *nd, target_phys_addr_t leaddr,

                       void *dma_opaque, qemu_irq irq)

{

    DeviceState *dev;

    SysBusDevice *s;

    qemu_irq reset;

    qemu_check_nic_model(&nd_table[0], "lance");

    dev = qdev_create(NULL, "lance");

    qdev_set_nic_properties(dev, nd);

    qdev_prop_set_ptr(dev, "dma", dma_opaque);

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_mmio_map(s, 0, leaddr);

    sysbus_connect_irq(s, 0, irq);

    reset = qdev_get_gpio_in(dev, 0);

    qdev_connect_gpio_out(dma_opaque, 0, reset);

}

static DeviceState *slavio_intctl_init(target_phys_addr_t addr,

                                       target_phys_addr_t addrg,

                                       qemu_irq **parent_irq)

{

    DeviceState *dev;

    SysBusDevice *s;

    unsigned int i, j;

    dev = qdev_create(NULL, "slavio_intctl");

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    for (i = 0; i < MAX_CPUS; i++) {

        for (j = 0; j < MAX_PILS; j++) {

            sysbus_connect_irq(s, i * MAX_PILS + j, parent_irq[i][j]);

        }

    }

    sysbus_mmio_map(s, 0, addrg);

    for (i = 0; i < MAX_CPUS; i++) {

        sysbus_mmio_map(s, i + 1, addr + i * TARGET_PAGE_SIZE);

    }

    return dev;

}

#define SYS_TIMER_OFFSET      0x10000ULL

#define CPU_TIMER_OFFSET(cpu) (0x1000ULL * cpu)

static void slavio_timer_init_all(target_phys_addr_t addr, qemu_irq master_irq,

                                  qemu_irq *cpu_irqs, unsigned int num_cpus)

{

    DeviceState *dev;

    SysBusDevice *s;

    unsigned int i;

    dev = qdev_create(NULL, "slavio_timer");

    qdev_prop_set_uint32(dev, "num_cpus", num_cpus);

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_connect_irq(s, 0, master_irq);

    sysbus_mmio_map(s, 0, addr + SYS_TIMER_OFFSET);

    for (i = 0; i < MAX_CPUS; i++) {

        sysbus_mmio_map(s, i + 1, addr + (target_phys_addr_t)CPU_TIMER_OFFSET(i));

        sysbus_connect_irq(s, i + 1, cpu_irqs[i]);

    }

}

#define MISC_LEDS 0x01600000

#define MISC_CFG  0x01800000

#define MISC_DIAG 0x01a00000

#define MISC_MDM  0x01b00000

#define MISC_SYS  0x01f00000

static void slavio_misc_init(target_phys_addr_t base,

                             target_phys_addr_t aux1_base,

                             target_phys_addr_t aux2_base, qemu_irq irq,

                             qemu_irq fdc_tc)

{

    DeviceState *dev;

    SysBusDevice *s;

    dev = qdev_create(NULL, "slavio_misc");

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    if (base) {

        /* 8 bit registers */

        /* Slavio control */

        sysbus_mmio_map(s, 0, base + MISC_CFG);

        /* Diagnostics */

        sysbus_mmio_map(s, 1, base + MISC_DIAG);

        /* Modem control */

        sysbus_mmio_map(s, 2, base + MISC_MDM);

        /* 16 bit registers */

        /* ss600mp diag LEDs */

        sysbus_mmio_map(s, 3, base + MISC_LEDS);

        /* 32 bit registers */

        /* System control */

        sysbus_mmio_map(s, 4, base + MISC_SYS);

    }

    if (aux1_base) {

        /* AUX 1 (Misc System Functions) */

        sysbus_mmio_map(s, 5, aux1_base);

    }

    if (aux2_base) {

        /* AUX 2 (Software Powerdown Control) */

        sysbus_mmio_map(s, 6, aux2_base);

    }

    sysbus_connect_irq(s, 0, irq);

    sysbus_connect_irq(s, 1, fdc_tc);

    qemu_system_powerdown = qdev_get_gpio_in(dev, 0);

}

static void ecc_init(target_phys_addr_t base, qemu_irq irq, uint32_t version)

{

    DeviceState *dev;

    SysBusDevice *s;

    dev = qdev_create(NULL, "eccmemctl");

    qdev_prop_set_uint32(dev, "version", version);

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_connect_irq(s, 0, irq);

    sysbus_mmio_map(s, 0, base);

    if (version == 0) { // SS-600MP only

        sysbus_mmio_map(s, 1, base + 0x1000);

    }

}

static void apc_init(target_phys_addr_t power_base, qemu_irq cpu_halt)

{

    DeviceState *dev;

    SysBusDevice *s;

    dev = qdev_create(NULL, "apc");

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    /* Power management (APC) XXX: not a Slavio device */

    sysbus_mmio_map(s, 0, power_base);

    sysbus_connect_irq(s, 0, cpu_halt);

}

static void tcx_init(target_phys_addr_t addr, int vram_size, int width,

                     int height, int depth)

{

    DeviceState *dev;

    SysBusDevice *s;

    dev = qdev_create(NULL, "SUNW,tcx");

    qdev_prop_set_taddr(dev, "addr", addr);

    qdev_prop_set_uint32(dev, "vram_size", vram_size);

    qdev_prop_set_uint16(dev, "width", width);

    qdev_prop_set_uint16(dev, "height", height);

    qdev_prop_set_uint16(dev, "depth", depth);

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    /* 8-bit plane */

    sysbus_mmio_map(s, 0, addr + 0x00800000ULL);

    /* DAC */

    sysbus_mmio_map(s, 1, addr + 0x00200000ULL);

    /* TEC (dummy) */

    sysbus_mmio_map(s, 2, addr + 0x00700000ULL);

    /* THC 24 bit: NetBSD writes here even with 8-bit display: dummy */

    sysbus_mmio_map(s, 3, addr + 0x00301000ULL);

    if (depth == 24) {

        /* 24-bit plane */

        sysbus_mmio_map(s, 4, addr + 0x02000000ULL);

        /* Control plane */

        sysbus_mmio_map(s, 5, addr + 0x0a000000ULL);

    } else {

        /* THC 8 bit (dummy) */

        sysbus_mmio_map(s, 4, addr + 0x00300000ULL);

    }

}

/* NCR89C100/MACIO Internal ID register */

static const uint8_t idreg_data[] = { 0xfe, 0x81, 0x01, 0x03 };

static void idreg_init(target_phys_addr_t addr)

{

    DeviceState *dev;

    SysBusDevice *s;

    dev = qdev_create(NULL, "macio_idreg");

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_mmio_map(s, 0, addr);

    cpu_physical_memory_write_rom(addr, idreg_data, sizeof(idreg_data));

}

static int idreg_init1(SysBusDevice *dev)

{

    ram_addr_t idreg_offset;

    idreg_offset = qemu_ram_alloc(NULL, "sun4m.idreg", sizeof(idreg_data));

    sysbus_init_mmio(dev, sizeof(idreg_data), idreg_offset | IO_MEM_ROM);

    return 0;

}

static SysBusDeviceInfo idreg_info = {

    .init = idreg_init1,

    .qdev.name  = "macio_idreg",

    .qdev.size  = sizeof(SysBusDevice),

};

static void idreg_register_devices(void)

{

    sysbus_register_withprop(&idreg_info);

}

device_init(idreg_register_devices);

/* SS-5 TCX AFX register */

static void afx_init(target_phys_addr_t addr)

{

    DeviceState *dev;

    SysBusDevice *s;

    dev = qdev_create(NULL, "tcx_afx");

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_mmio_map(s, 0, addr);

}

static int afx_init1(SysBusDevice *dev)

{

    ram_addr_t afx_offset;

    afx_offset = qemu_ram_alloc(NULL, "sun4m.afx", 4);

    sysbus_init_mmio(dev, 4, afx_offset | IO_MEM_RAM);

    return 0;

}

static SysBusDeviceInfo afx_info = {

    .init = afx_init1,

    .qdev.name  = "tcx_afx",

    .qdev.size  = sizeof(SysBusDevice),

};

static void afx_register_devices(void)

{

    sysbus_register_withprop(&afx_info);

}

device_init(afx_register_devices);

/* Boot PROM (OpenBIOS) */

static uint64_t translate_prom_address(void *opaque, uint64_t addr)

{

    target_phys_addr_t *base_addr = (target_phys_addr_t *)opaque;

    return addr + *base_addr - PROM_VADDR;

}

static void prom_init(target_phys_addr_t addr, const char *bios_name)

{

    DeviceState *dev;

    SysBusDevice *s;

    char *filename;

    int ret;

    dev = qdev_create(NULL, "openprom");

    qdev_init_nofail(dev);

    s = sysbus_from_qdev(dev);

    sysbus_mmio_map(s, 0, addr);

    /* load boot prom */

    if (bios_name == NULL) {

        bios_name = PROM_FILENAME;

    }

    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);

    if (filename) {

        ret = load_elf(filename, translate_prom_address, &addr, NULL,

                       NULL, NULL, 1, ELF_MACHINE, 0);

        if (ret < 0 || ret > PROM_SIZE_MAX) {

            ret = load_image_targphys(filename, addr, PROM_SIZE_MAX);

        }

        qemu_free(filename);

    } else {

        ret = -1;

    }

    if (ret < 0 || ret > PROM_SIZE_MAX) {

        fprintf(stderr, "qemu: could not load prom '%s'\n", bios_name);

        exit(1);

    }

}

static int prom_init1(SysBusDevice *dev)

{

    ram_addr_t prom_offset;

    prom_offset = qemu_ram_alloc(NULL, "sun4m.prom", PROM_SIZE_MAX);

    sysbus_init_mmio(dev, PROM_SIZE_MAX, prom_offset | IO_MEM_ROM);

    return 0;

}

static SysBusDeviceInfo prom_info = {

    .init = prom_init1,

    .qdev.name  = "openprom",

    .qdev.size  = sizeof(SysBusDevice),

    .qdev.props = (Property[]) {

        {/* end of property list */}

    }

};

static void prom_register_devices(void)

{

    sysbus_register_withprop(&prom_info);

}

device_init(prom_register_devices);

typedef struct RamDevice

{

    SysBusDevice busdev;

    uint64_t size;

} RamDevice;

/* System RAM */

static int ram_init1(SysBusDevice *dev)

{

    ram_addr_t RAM_size, ram_offset;

    RamDevice *d = FROM_SYSBUS(RamDevice, dev);

    RAM_size = d->size;

    ram_offset = qemu_ram_alloc(NULL, "sun4m.ram", RAM_size);

    sysbus_init_mmio(dev, RAM_size, ram_offset);

    return 0;

}

static void ram_init(target_phys_addr_t addr, ram_addr_t RAM_size,

                     uint64_t max_mem)

{

    DeviceState *dev;

    SysBusDevice *s;

    RamDevice *d;

    /* allocate RAM */

    if ((uint64_t)RAM_size > max_mem) {

        fprintf(stderr,

                "qemu: Too much memory for this machine: %d, maximum %d\n",

                (unsigned int)(RAM_size / (1024 * 1024)),

                (unsigned int)(max_mem / (1024 * 1024)));

        exit(1);

    }

    dev = qdev_create(NULL, "memory");

    s = sysbus_from_qdev(dev);

    d = FROM_SYSBUS(RamDevice, s);

    d->size = RAM_size;

    qdev_init_nofail(dev);

    sysbus_mmio_map(s, 0, addr);

}

static SysBusDeviceInfo ram_info = {

    .init = ram_init1,

    .qdev.name  = "memory",

    .qdev.size  = sizeof(RamDevice),

    .qdev.props = (Property[]) {

        DEFINE_PROP_UINT64("size", RamDevice, size, 0),

        DEFINE_PROP_END_OF_LIST(),

    }

};

static void ram_register_devices(void)

{

    sysbus_register_withprop(&ram_info);

}

device_init(ram_register_devices);

static void cpu_devinit(const char *cpu_model, unsigned int id,

                        uint64_t prom_addr, qemu_irq **cpu_irqs)

{

    CPUState *env;

    env = cpu_init(cpu_model);

    if (!env) {

        fprintf(stderr, "qemu: Unable to find Sparc CPU definition\n");

        exit(1);

    }

    cpu_sparc_set_id(env, id);

    if (id == 0) {

        qemu_register_reset(main_cpu_reset, env);

    } else {

        qemu_register_reset(secondary_cpu_reset, env);

        env->halted = 1;

    }

    *cpu_irqs = qemu_allocate_irqs(cpu_set_irq, env, MAX_PILS);

    env->prom_addr = prom_addr;

}

static void sun4m_hw_init(const struct sun4m_hwdef *hwdef, ram_addr_t RAM_size,

                          const char *boot_device,

                          const char *kernel_filename,

                          const char *kernel_cmdline,

                          const char *initrd_filename, const char *cpu_model)

{

    unsigned int i;

    void *iommu, *espdma, *ledma, *nvram;

    qemu_irq *cpu_irqs[MAX_CPUS], slavio_irq[32], slavio_cpu_irq[MAX_CPUS],

        espdma_irq, ledma_irq;

    qemu_irq esp_reset;

    qemu_irq fdc_tc;

    qemu_irq *cpu_halt;

    unsigned long kernel_size;

    DriveInfo *fd[MAX_FD];

    void *fw_cfg;

    unsigned int num_vsimms;

    /* init CPUs */

    if (!cpu_model)

        cpu_model = hwdef->default_cpu_model;

    for(i = 0; i < smp_cpus; i++) {

        cpu_devinit(cpu_model, i, hwdef->slavio_base, &cpu_irqs[i]);

    }

    for (i = smp_cpus; i < MAX_CPUS; i++)

        cpu_irqs[i] = qemu_allocate_irqs(dummy_cpu_set_irq, NULL, MAX_PILS);

    /* set up devices */

    ram_init(0, RAM_size, hwdef->max_mem);

    /* models without ECC don't trap when missing ram is accessed */

    if (!hwdef->ecc_base) {

        empty_slot_init(RAM_size, hwdef->max_mem - RAM_size);

    }

    prom_init(hwdef->slavio_base, bios_name);

    slavio_intctl = slavio_intctl_init(hwdef->intctl_base,

                                       hwdef->intctl_base + 0x10000ULL,

                                       cpu_irqs);

    for (i = 0; i < 32; i++) {

        slavio_irq[i] = qdev_get_gpio_in(slavio_intctl, i);

    }

    for (i = 0; i < MAX_CPUS; i++) {

        slavio_cpu_irq[i] = qdev_get_gpio_in(slavio_intctl, 32 + i);

    }

    if (hwdef->idreg_base) {

        idreg_init(hwdef->idreg_base);

    }

    if (hwdef->afx_base) {

        afx_init(hwdef->afx_base);

    }

    iommu = iommu_init(hwdef->iommu_base, hwdef->iommu_version,

                       slavio_irq[30]);

    if (hwdef->iommu_pad_base) {

        /* On the real hardware (SS-5, LX) the MMU is not padded, but aliased.

           Software shouldn't use aliased addresses, neither should it crash

           when does. Using empty_slot instead of aliasing can help with

           debugging such accesses */

        empty_slot_init(hwdef->iommu_pad_base,hwdef->iommu_pad_len);

    }

    espdma = sparc32_dma_init(hwdef->dma_base, slavio_irq[18],

                              iommu, &espdma_irq);

    ledma = sparc32_dma_init(hwdef->dma_base + 16ULL,

                             slavio_irq[16], iommu, &ledma_irq);

    if (graphic_depth != 8 && graphic_depth != 24) {

        fprintf(stderr, "qemu: Unsupported depth: %d\n", graphic_depth);

        exit (1);

    }

    num_vsimms = 0;

    if (num_vsimms == 0) {

        tcx_init(hwdef->tcx_base, 0x00100000, graphic_width, graphic_height,

                 graphic_depth);

    }

    for (i = num_vsimms; i < MAX_VSIMMS; i++) {

        /* vsimm registers probed by OBP */

        if (hwdef->vsimm[i].reg_base) {

            empty_slot_init(hwdef->vsimm[i].reg_base, 0x2000);

        }

    }

    if (hwdef->sx_base) {

        empty_slot_init(hwdef->sx_base, 0x2000);

    }

    lance_init(&nd_table[0], hwdef->le_base, ledma, ledma_irq);

    nvram = m48t59_init(slavio_irq[0], hwdef->nvram_base, 0, 0x2000, 8);

    slavio_timer_init_all(hwdef->counter_base, slavio_irq[19], slavio_cpu_irq, smp_cpus);

    slavio_serial_ms_kbd_init(hwdef->ms_kb_base, slavio_irq[14],

                              display_type == DT_NOGRAPHIC, ESCC_CLOCK, 1);

    // Slavio TTYA (base+4, Linux ttyS0) is the first Qemu serial device

    // Slavio TTYB (base+0, Linux ttyS1) is the second Qemu serial device

    escc_init(hwdef->serial_base, slavio_irq[15], slavio_irq[15],

              serial_hds[0], serial_hds[1], ESCC_CLOCK, 1);

    cpu_halt = qemu_allocate_irqs(cpu_halt_signal, NULL, 1);

    slavio_misc_init(hwdef->slavio_base, hwdef->aux1_base, hwdef->aux2_base,

                     slavio_irq[30], fdc_tc);

    if (hwdef->apc_base) {

        apc_init(hwdef->apc_base, cpu_halt[0]);

    }

    if (hwdef->fd_base) {

        /* there is zero or one floppy drive */

        memset(fd, 0, sizeof(fd));

        fd[0] = drive_get(IF_FLOPPY, 0, 0);

        sun4m_fdctrl_init(slavio_irq[22], hwdef->fd_base, fd,

                          &fdc_tc);

    }

    if (drive_get_max_bus(IF_SCSI) > 0) {

        fprintf(stderr, "qemu: too many SCSI bus\n");

        exit(1);

    }

    esp_reset = qdev_get_gpio_in(espdma, 0);

    esp_init(hwdef->esp_base, 2,

             espdma_memory_read, espdma_memory_write,

             espdma, espdma_irq, &esp_reset);

    if (hwdef->cs_base) {

        sysbus_create_simple("SUNW,CS4231", hwdef->cs_base,

                             slavio_irq[5]);

    }

    if (hwdef->dbri_base) {

        /* ISDN chip with attached CS4215 audio codec */

        /* prom space */

        empty_slot_init(hwdef->dbri_base+0x1000, 0x30);

        /* reg space */

        empty_slot_init(hwdef->dbri_base+0x10000, 0x100);

    }

    if (hwdef->bpp_base) {

        /* parallel port */

        empty_slot_init(hwdef->bpp_base, 0x20);

    }

    kernel_size = sun4m_load_kernel(kernel_filename, initrd_filename,

                                    RAM_size);

    nvram_init(nvram, (uint8_t *)&nd_table[0].macaddr, kernel_cmdline,

               boot_device, RAM_size, kernel_size, graphic_width,

               graphic_height, graphic_depth, hwdef->nvram_machine_id,

               "Sun4m");

    if (hwdef->ecc_base)

        ecc_init(hwdef->ecc_base, slavio_irq[28],

                 hwdef->ecc_version);

    fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);

    fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);

    fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);

    fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, hwdef->machine_id);

    fw_cfg_add_i16(fw_cfg, FW_CFG_SUN4M_DEPTH, graphic_depth);

    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, KERNEL_LOAD_ADDR);

    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);

    if (kernel_cmdline) {

        fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, CMDLINE_ADDR);

        pstrcpy_targphys("cmdline", CMDLINE_ADDR, TARGET_PAGE_SIZE, kernel_cmdline);

        fw_cfg_add_bytes(fw_cfg, FW_CFG_CMDLINE_DATA,

                         (uint8_t*)strdup(kernel_cmdline),

                         strlen(kernel_cmdline) + 1);

        fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,

                       strlen(kernel_cmdline) + 1);

    } else {

        fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);

        fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, 0);

    }

    fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, INITRD_LOAD_ADDR);

    fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, 0); // not used

    fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, boot_device[0]);

    qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);

}

enum {

    ss2_id = 0,

    ss5_id = 32,

    vger_id,

    lx_id,

    ss4_id,

    scls_id,

    sbook_id,

    ss10_id = 64,

    ss20_id,

    ss600mp_id,

    ss1000_id = 96,

    ss2000_id,

};

static const struct sun4m_hwdef sun4m_hwdefs[] = {

    /* SS-5 */

    {

        .iommu_base   = 0x10000000,

        .iommu_pad_base = 0x10004000,

        .iommu_pad_len  = 0x0fffb000,

        .tcx_base     = 0x50000000,

        .cs_base      = 0x6c000000,

        .slavio_base  = 0x70000000,

        .ms_kb_base   = 0x71000000,

        .serial_base  = 0x71100000,

        .nvram_base   = 0x71200000,

        .fd_base      = 0x71400000,

        .counter_base = 0x71d00000,

        .intctl_base  = 0x71e00000,

        .idreg_base   = 0x78000000,

        .dma_base     = 0x78400000,

        .esp_base     = 0x78800000,

        .le_base      = 0x78c00000,

        .apc_base     = 0x6a000000,

        .afx_base     = 0x6e000000,

        .aux1_base    = 0x71900000,

        .aux2_base    = 0x71910000,

        .nvram_machine_id = 0x80,

        .machine_id = ss5_id,

        .iommu_version = 0x05000000,

        .max_mem = 0x10000000,

        .default_cpu_model = "Fujitsu MB86904",

    },

    /* SS-10 */

    {

        .iommu_base   = 0xfe0000000ULL,

        .tcx_base     = 0xe20000000ULL,

        .slavio_base  = 0xff0000000ULL,

        .ms_kb_base   = 0xff1000000ULL,

        .serial_base  = 0xff1100000ULL,

        .nvram_base   = 0xff1200000ULL,

        .fd_base      = 0xff1700000ULL,

        .counter_base = 0xff1300000ULL,

        .intctl_base  = 0xff1400000ULL,

        .idreg_base   = 0xef0000000ULL,

        .dma_base     = 0xef0400000ULL,

        .esp_base     = 0xef0800000ULL,

        .le_base      = 0xef0c00000ULL,

        .apc_base     = 0xefa000000ULL, // XXX should not exist

        .aux1_base    = 0xff1800000ULL,

        .aux2_base    = 0xff1a01000ULL,

        .ecc_base     = 0xf00000000ULL,

        .ecc_version  = 0x10000000, // version 0, implementation 1

        .nvram_machine_id = 0x72,

        .machine_id = ss10_id,

        .iommu_version = 0x03000000,

        .max_mem = 0xf00000000ULL,

        .default_cpu_model = "TI SuperSparc II",

    },

    /* SS-600MP */

    {

        .iommu_base   = 0xfe0000000ULL,

        .tcx_base     = 0xe20000000ULL,

        .slavio_base  = 0xff0000000ULL,

        .ms_kb_base   = 0xff1000000ULL,

        .serial_base  = 0xff1100000ULL,

        .nvram_base   = 0xff1200000ULL,

        .counter_base = 0xff1300000ULL,

        .intctl_base  = 0xff1400000ULL,

        .dma_base     = 0xef0081000ULL,

        .esp_base     = 0xef0080000ULL,

        .le_base      = 0xef0060000ULL,

        .apc_base     = 0xefa000000ULL, // XXX should not exist

        .aux1_base    = 0xff1800000ULL,

        .aux2_base    = 0xff1a01000ULL, // XXX should not exist

        .ecc_base     = 0xf00000000ULL,

        .ecc_version  = 0x00000000, // version 0, implementation 0

        .nvram_machine_id = 0x71,

        .machine_id = ss600mp_id,

        .iommu_version = 0x01000000,

        .max_mem = 0xf00000000ULL,

        .default_cpu_model = "TI SuperSparc II",

    },

    /* SS-20 */

    {

        .iommu_base   = 0xfe0000000ULL,

        .tcx_base     = 0xe20000000ULL,

        .slavio_base  = 0xff0000000ULL,

        .ms_kb_base   = 0xff1000000ULL,

        .serial_base  = 0xff1100000ULL,

        .nvram_base   = 0xff1200000ULL,

        .fd_base      = 0xff1700000ULL,

        .counter_base = 0xff1300000ULL,

        .intctl_base  = 0xff1400000ULL,

        .idreg_base   = 0xef0000000ULL,

        .dma_base     = 0xef0400000ULL,

        .esp_base     = 0xef0800000ULL,

        .le_base      = 0xef0c00000ULL,

        .bpp_base     = 0xef4800000ULL,

        .apc_base     = 0xefa000000ULL, // XXX should not exist

        .aux1_base    = 0xff1800000ULL,

        .aux2_base    = 0xff1a01000ULL,

        .dbri_base    = 0xee0000000ULL,

        .sx_base      = 0xf80000000ULL,

        .vsimm        = {

            {

                .reg_base  = 0x9c000000ULL,

                .vram_base = 0xfc000000ULL

            }, {

                .reg_base  = 0x90000000ULL,

                .vram_base = 0xf0000000ULL

            }, {

                .reg_base  = 0x94000000ULL

            }, {

                .reg_base  = 0x98000000ULL

            }

        },

        .ecc_base     = 0xf00000000ULL,

        .ecc_version  = 0x20000000, // version 0, implementation 2

        .nvram_machine_id = 0x72,

        .machine_id = ss20_id,

        .iommu_version = 0x13000000,

        .max_mem = 0xf00000000ULL,

        .default_cpu_model = "TI SuperSparc II",

    },

    /* Voyager */

    {

        .iommu_base   = 0x10000000,

        .tcx_base     = 0x50000000,

        .slavio_base  = 0x70000000,

        .ms_kb_base   = 0x71000000,

        .serial_base  = 0x71100000,

        .nvram_base   = 0x71200000,

        .fd_base      = 0x71400000,

        .counter_base = 0x71d00000,

        .intctl_base  = 0x71e00000,

        .idreg_base   = 0x78000000,

        .dma_base     = 0x78400000,

        .esp_base     = 0x78800000,

        .le_base      = 0x78c00000,

        .apc_base     = 0x71300000, // pmc

        .aux1_base    = 0x71900000,

        .aux2_base    = 0x71910000,

        .nvram_machine_id = 0x80,

        .machine_id = vger_id,

        .iommu_version = 0x05000000,

        .max_mem = 0x10000000,

        .default_cpu_model = "Fujitsu MB86904",

    },

    /* LX */

    {

        .iommu_base   = 0x10000000,

        .iommu_pad_base = 0x10004000,

        .iommu_pad_len  = 0x0fffb000,

        .tcx_base     = 0x50000000,

        .slavio_base  = 0x70000000,

        .ms_kb_base   = 0x71000000,

        .serial_base  = 0x71100000,

        .nvram_base   = 0x71200000,

        .fd_base      = 0x71400000,

        .counter_base = 0x71d00000,

        .intctl_base  = 0x71e00000,

        .idreg_base   = 0x78000000,

        .dma_base     = 0x78400000,

        .esp_base     = 0x78800000,

        .le_base      = 0x78c00000,

        .aux1_base    = 0x71900000,

        .aux2_base    = 0x71910000,

        .nvram_machine_id = 0x80,

        .machine_id = lx_id,

        .iommu_version = 0x04000000,

        .max_mem = 0x10000000,

        .default_cpu_model = "TI MicroSparc I",

    },

    /* SS-4 */

    {

        .iommu_base   = 0x10000000,

        .tcx_base     = 0x50000000,

        .cs_base      = 0x6c000000,

        .slavio_base  = 0x70000000,

        .ms_kb_base   = 0x71000000,

        .serial_base  = 0x71100000,

        .nvram_base   = 0x71200000,

        .fd_base      = 0x71400000,

        .counter_base = 0x71d00000,

        .intctl_base  = 0x71e00000,

        .idreg_base   = 0x78000000,

        .dma_base     = 0x78400000,

        .esp_base     = 0x78800000,

        .le_base      = 0x78c00000,

        .apc_base     = 0x6a000000,

        .aux1_base    = 0x71900000,

        .aux2_base    = 0x71910000,

        .nvram_machine_id = 0x80,

        .machine_id = ss4_id,

        .iommu_version = 0x05000000,

        .max_mem = 0x10000000,

        .default_cpu_model = "Fujitsu MB86904",

    },

    /* SPARCClassic */

    {

        .iommu_base   = 0x10000000,

        .tcx_base     = 0x50000000,

        .slavio_base  = 0x70000000,

        .ms_kb_base   = 0x71000000,

        .serial_base  = 0x71100000,

        .nvram_base   = 0x71200000,

        .fd_base      = 0x71400000,

        .counter_base = 0x71d00000,

        .intctl_base  = 0x71e00000,

        .idreg_base   = 0x78000000,

        .dma_base     = 0x78400000,

        .esp_base     = 0x78800000,

        .le_base      = 0x78c00000,

        .apc_base     = 0x6a000000,

        .aux1_base    = 0x71900000,

        .aux2_base    = 0x71910000,

        .nvram_machine_id = 0x80,

        .machine_id = scls_id,

        .iommu_version = 0x05000000,

        .max_mem = 0x10000000,

        .default_cpu_model = "TI MicroSparc I",

    },

    /* SPARCbook */

    {

        .iommu_base   = 0x10000000,

        .tcx_base     = 0x50000000, // XXX

        .slavio_base  = 0x70000000,

        .ms_kb_base   = 0x71000000,

        .serial_base  = 0x71100000,

        .nvram_base   = 0x71200000,

        .fd_base      = 0x71400000,

        .counter_base = 0x71d00000,

        .intctl_base  = 0x71e00000,

        .idreg_base   = 0x78000000,

        .dma_base     = 0x78400000,

        .esp_base     = 0x78800000,

        .le_base      = 0x78c00000,

        .apc_base     = 0x6a000000,

        .aux1_base    = 0x71900000,

        .aux2_base    = 0x71910000,

        .nvram_machine_id = 0x80,

        .machine_id = sbook_id,

        .iommu_version = 0x05000000,

        .max_mem = 0x10000000,

        .default_cpu_model = "TI MicroSparc I",

    },

};

/* SPARCstation 5 hardware initialisation */

static void ss5_init(ram_addr_t RAM_size,

                     const char *boot_device,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    sun4m_hw_init(&sun4m_hwdefs[0], RAM_size, boot_device, kernel_filename,

                  kernel_cmdline, initrd_filename, cpu_model);

}

/* SPARCstation 10 hardware initialisation */

static void ss10_init(ram_addr_t RAM_size,

                      const char *boot_device,

                      const char *kernel_filename, const char *kernel_cmdline,

                      const char *initrd_filename, const char *cpu_model)

{

    sun4m_hw_init(&sun4m_hwdefs[1], RAM_size, boot_device, kernel_filename,

                  kernel_cmdline, initrd_filename, cpu_model);

}

/* SPARCserver 600MP hardware initialisation */

static void ss600mp_init(ram_addr_t RAM_size,

                         const char *boot_device,

                         const char *kernel_filename,

                         const char *kernel_cmdline,

                         const char *initrd_filename, const char *cpu_model)

{

    sun4m_hw_init(&sun4m_hwdefs[2], RAM_size, boot_device, kernel_filename,

                  kernel_cmdline, initrd_filename, cpu_model);

}

/* SPARCstation 20 hardware initialisation */

static void ss20_init(ram_addr_t RAM_size,

                      const char *boot_device,

                      const char *kernel_filename, const char *kernel_cmdline,

                      const char *initrd_filename, const char *cpu_model)

{

    sun4m_hw_init(&sun4m_hwdefs[3], RAM_size, boot_device, kernel_filename,

                  kernel_cmdline, initrd_filename, cpu_model);

}

/* SPARCstation Voyager hardware initialisation */

static void vger_init(ram_addr_t RAM_size,

                      const char *boot_device,

                      const char *kernel_filename, const char *kernel_cmdline,

                      const char *initrd_filename, const char *cpu_model)

{

    sun4m_hw_init(&sun4m_hwdefs[4], RAM_size, boot_device, kernel_filename,

                  kernel_cmdline, initrd_filename, cpu_model);

}

/* SPARCstation LX hardware initialisation */

static void ss_lx_init(ram_addr_t RAM_size,

                       const char *boot_device,

                       const char *kernel_filename, const char *kernel_cmdline,

                       const char *initrd_filename, const char *cpu_model)

{

    sun4m_hw_init(&sun4m_hwdefs[5], RAM_size, boot_device, kernel_filename,

                  kernel_cmdline, initrd_filename, cpu_model);

}

/* SPARCstation 4 hardware initialisation */

static void ss4_init(ram_addr_t RAM_size,

                     const char *boot_device,

                     const char *kernel_filename, const char *kernel_cmdline,

                     const char *initrd_filename, const char *cpu_model)

{

    sun4m_hw_init(&sun4m_hwdefs[6], RAM_size, boot_device, kernel_filename,

                  kernel_cmdline, initrd_filename, cpu_model);

}

/* SPARCClassic hardware initialisation */

static void scls_init(ram_addr_t RAM_size,

                      const char *boot_device,

                      const char *kernel_filename, const char *kernel_cmdline,

                      const char *initrd_filename, const char *cpu_model)