Archipelago » qemu

/*

 * QEMU MIPS Jazz support

 *

 * Copyright (c) 2007-2008 Hervé Poussineau

 *

 * 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 "hw.h"

#include "mips.h"

#include "mips_cpudevs.h"

#include "pc.h"

#include "isa.h"

#include "fdc.h"

#include "sysemu.h"

#include "arch_init.h"

#include "boards.h"

#include "net.h"

#include "esp.h"

#include "mips-bios.h"

#include "loader.h"

#include "mc146818rtc.h"

#include "blockdev.h"

#include "sysbus.h"

#include "exec-memory.h"

enum jazz_model_e

{

    JAZZ_MAGNUM,

    JAZZ_PICA61,

};

static void main_cpu_reset(void *opaque)

{

    CPUState *env = opaque;

    cpu_reset(env);

}

static uint64_t rtc_read(void *opaque, target_phys_addr_t addr, unsigned size)

{

    return cpu_inw(0x71);

}

static void rtc_write(void *opaque, target_phys_addr_t addr,

                      uint64_t val, unsigned size)

{

    cpu_outw(0x71, val & 0xff);

}

static const MemoryRegionOps rtc_ops = {

    .read = rtc_read,

    .write = rtc_write,

    .endianness = DEVICE_NATIVE_ENDIAN,

};

static uint64_t dma_dummy_read(void *opaque, target_phys_addr_t addr,

                               unsigned size)

{

    /* Nothing to do. That is only to ensure that

     * the current DMA acknowledge cycle is completed. */

    return 0xff;

}

static void dma_dummy_write(void *opaque, target_phys_addr_t addr,

                            uint64_t val, unsigned size)

{

    /* Nothing to do. That is only to ensure that

     * the current DMA acknowledge cycle is completed. */

}

static const MemoryRegionOps dma_dummy_ops = {

    .read = dma_dummy_read,

    .write = dma_dummy_write,

    .endianness = DEVICE_NATIVE_ENDIAN,

};

#define MAGNUM_BIOS_SIZE_MAX 0x7e000

#define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)

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

{

    CPUState *env = cpu_single_env;

    if (env && level) {

        cpu_exit(env);

    }

}

static void mips_jazz_init(MemoryRegion *address_space,

                           MemoryRegion *address_space_io,

                           ram_addr_t ram_size,

                           const char *cpu_model,

                           enum jazz_model_e jazz_model)

{

    char *filename;

    int bios_size, n;

    CPUState *env;

    qemu_irq *rc4030, *i8259;

    rc4030_dma *dmas;

    void* rc4030_opaque;

    MemoryRegion *rtc = g_new(MemoryRegion, 1);

    MemoryRegion *i8042 = g_new(MemoryRegion, 1);

    MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);

    NICInfo *nd;

    DeviceState *dev;

    SysBusDevice *sysbus;

    ISABus *isa_bus;

    ISADevice *pit;

    DriveInfo *fds[MAX_FD];

    qemu_irq esp_reset, dma_enable;

    qemu_irq *cpu_exit_irq;

    MemoryRegion *ram = g_new(MemoryRegion, 1);

    MemoryRegion *bios = g_new(MemoryRegion, 1);

    MemoryRegion *bios2 = g_new(MemoryRegion, 1);

    /* init CPUs */

    if (cpu_model == NULL) {

#ifdef TARGET_MIPS64

        cpu_model = "R4000";

#else

        /* FIXME: All wrong, this maybe should be R3000 for the older JAZZs. */

        cpu_model = "24Kf";

#endif

    }

    env = cpu_init(cpu_model);

    if (!env) {

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

        exit(1);

    }

    qemu_register_reset(main_cpu_reset, env);

    /* allocate RAM */

    memory_region_init_ram(ram, "mips_jazz.ram", ram_size);

    vmstate_register_ram_global(ram);

    memory_region_add_subregion(address_space, 0, ram);

    memory_region_init_ram(bios, "mips_jazz.bios", MAGNUM_BIOS_SIZE);

    vmstate_register_ram_global(bios);

    memory_region_set_readonly(bios, true);

    memory_region_init_alias(bios2, "mips_jazz.bios", bios,

                             0, MAGNUM_BIOS_SIZE);

    memory_region_add_subregion(address_space, 0x1fc00000LL, bios);

    memory_region_add_subregion(address_space, 0xfff00000LL, bios2);

    /* load the BIOS image. */

    if (bios_name == NULL)

        bios_name = BIOS_FILENAME;

    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);

    if (filename) {

        bios_size = load_image_targphys(filename, 0xfff00000LL,

                                        MAGNUM_BIOS_SIZE);

        g_free(filename);

    } else {

        bios_size = -1;

    }

    if (bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) {

        fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n",

                bios_name);

        exit(1);

    }

    /* Init CPU internal devices */

    cpu_mips_irq_init_cpu(env);

    cpu_mips_clock_init(env);

    /* Chipset */

    rc4030_opaque = rc4030_init(env->irq[6], env->irq[3], &rc4030, &dmas,

                                address_space);

    memory_region_init_io(dma_dummy, &dma_dummy_ops, NULL, "dummy_dma", 0x1000);

    memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);

    /* ISA devices */

    isa_bus = isa_bus_new(NULL, address_space_io);

    i8259 = i8259_init(isa_bus, env->irq[4]);

    isa_bus_irqs(isa_bus, i8259);

    cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);

    DMA_init(0, cpu_exit_irq);

    pit = pit_init(isa_bus, 0x40, 0);

    pcspk_init(pit);

    /* ISA IO space at 0x90000000 */

    isa_mmio_init(0x90000000, 0x01000000);

    isa_mem_base = 0x11000000;

    /* Video card */

    switch (jazz_model) {

    case JAZZ_MAGNUM:

        dev = qdev_create(NULL, "sysbus-g364");

        qdev_init_nofail(dev);

        sysbus = sysbus_from_qdev(dev);

        sysbus_mmio_map(sysbus, 0, 0x60080000);

        sysbus_mmio_map(sysbus, 1, 0x40000000);

        sysbus_connect_irq(sysbus, 0, rc4030[3]);

        {

            /* Simple ROM, so user doesn't have to provide one */

            MemoryRegion *rom_mr = g_new(MemoryRegion, 1);

            memory_region_init_ram(rom_mr, "g364fb.rom", 0x80000);

            vmstate_register_ram_global(rom_mr);

            memory_region_set_readonly(rom_mr, true);

            uint8_t *rom = memory_region_get_ram_ptr(rom_mr);

            memory_region_add_subregion(address_space, 0x60000000, rom_mr);

            rom[0] = 0x10; /* Mips G364 */

        }

        break;

    case JAZZ_PICA61:

        isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());

        break;

    default:

        break;

    }

    /* Network controller */

    for (n = 0; n < nb_nics; n++) {

        nd = &nd_table[n];

        if (!nd->model)

            nd->model = g_strdup("dp83932");

        if (strcmp(nd->model, "dp83932") == 0) {

            dp83932_init(nd, 0x80001000, 2, get_system_memory(), rc4030[4],

                         rc4030_opaque, rc4030_dma_memory_rw);

            break;

        } else if (strcmp(nd->model, "?") == 0) {

            fprintf(stderr, "qemu: Supported NICs: dp83932\n");

            exit(1);

        } else {

            fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);

            exit(1);

        }

    }

    /* SCSI adapter */

    esp_init(0x80002000, 0,

             rc4030_dma_read, rc4030_dma_write, dmas[0],

             rc4030[5], &esp_reset, &dma_enable);

    /* Floppy */

    if (drive_get_max_bus(IF_FLOPPY) >= MAX_FD) {

        fprintf(stderr, "qemu: too many floppy drives\n");

        exit(1);

    }

    for (n = 0; n < MAX_FD; n++) {

        fds[n] = drive_get(IF_FLOPPY, 0, n);

    }

    fdctrl_init_sysbus(rc4030[1], 0, 0x80003000, fds);

    /* Real time clock */

    rtc_init(isa_bus, 1980, NULL);

    memory_region_init_io(rtc, &rtc_ops, NULL, "rtc", 0x1000);

    memory_region_add_subregion(address_space, 0x80004000, rtc);

    /* Keyboard (i8042) */

    i8042_mm_init(rc4030[6], rc4030[7], i8042, 0x1000, 0x1);

    memory_region_add_subregion(address_space, 0x80005000, i8042);

    /* Serial ports */

    if (serial_hds[0]) {

        serial_mm_init(address_space, 0x80006000, 0, rc4030[8], 8000000/16,

                       serial_hds[0], DEVICE_NATIVE_ENDIAN);

    }

    if (serial_hds[1]) {

        serial_mm_init(address_space, 0x80007000, 0, rc4030[9], 8000000/16,

                       serial_hds[1], DEVICE_NATIVE_ENDIAN);

    }

    /* Parallel port */

    if (parallel_hds[0])

        parallel_mm_init(address_space, 0x80008000, 0, rc4030[0],

                         parallel_hds[0]);

    /* Sound card */

    /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */

    audio_init(isa_bus, NULL);

    /* NVRAM */

    dev = qdev_create(NULL, "ds1225y");

    qdev_init_nofail(dev);

    sysbus = sysbus_from_qdev(dev);

    sysbus_mmio_map(sysbus, 0, 0x80009000);

    /* LED indicator */

    jazz_led_init(address_space, 0x8000f000);

}

static

void mips_magnum_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)

{

        mips_jazz_init(get_system_memory(), get_system_io(),

                       ram_size, cpu_model, JAZZ_MAGNUM);

}

static

void mips_pica61_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)

{

    mips_jazz_init(get_system_memory(), get_system_io(),

                   ram_size, cpu_model, JAZZ_PICA61);

}

static QEMUMachine mips_magnum_machine = {

    .name = "magnum",

    .desc = "MIPS Magnum",

    .init = mips_magnum_init,

    .use_scsi = 1,

};

static QEMUMachine mips_pica61_machine = {

    .name = "pica61",

    .desc = "Acer Pica 61",

    .init = mips_pica61_init,

    .use_scsi = 1,

};

static void mips_jazz_machine_init(void)

{

    qemu_register_machine(&mips_magnum_machine);

    qemu_register_machine(&mips_pica61_machine);

}

machine_init(mips_jazz_machine_init);