int rom_add_file(const char *file, const char *fw_dir,
                 hwaddr addr, int32_t bootindex,
                 bool option_rom, MemoryRegion *mr,
                 AddressSpace *as)
{
    MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
    Rom *rom;
    int rc, fd = -1;
    char devpath[100];

    if (as && mr) {
        fprintf(stderr, "Specifying an Address Space and Memory Region is " \
                "not valid when loading a rom\n");
        /* We haven't allocated anything so we don't need any cleanup */
        return -1;
    }

    rom = g_malloc0(sizeof(*rom));
    rom->name = g_strdup(file);
    rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
    rom->as = as;
    if (rom->path == NULL) {
        rom->path = g_strdup(file);
    }

    fd = open(rom->path, O_RDONLY | O_BINARY);
    if (fd == -1) {
        fprintf(stderr, "Could not open option rom '%s': %s\n",
                rom->path, strerror(errno));
        goto err;
    }

    if (fw_dir) {
        rom->fw_dir  = g_strdup(fw_dir);
        rom->fw_file = g_strdup(file);
    }
    rom->addr     = addr;
    rom->romsize  = lseek(fd, 0, SEEK_END);
    if (rom->romsize == -1) {
        fprintf(stderr, "rom: file %-20s: get size error: %s\n",
                rom->name, strerror(errno));
        goto err;
    }

    rom->datasize = rom->romsize;
    rom->data     = g_malloc0(rom->datasize);
    lseek(fd, 0, SEEK_SET);
    rc = read(fd, rom->data, rom->datasize);
    if (rc != rom->datasize) {
        fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
                rom->name, rc, rom->datasize);
        goto err;
    }
    close(fd);
    rom_insert(rom);
    if (rom->fw_file && fw_cfg) {
        const char *basename;
        char fw_file_name[FW_CFG_MAX_FILE_PATH];
        void *data;

        basename = strrchr(rom->fw_file, '/');
        if (basename) {
            basename++;
        } else {
            basename = rom->fw_file;
        }
        snprintf(fw_file_name, sizeof(fw_file_name), "%s/%s", rom->fw_dir,
                 basename);
        snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);

        if ((!option_rom || mc->option_rom_has_mr) && mc->rom_file_has_mr) {
            data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, true);
        } else {
            data = rom->data;
        }

        fw_cfg_add_file(fw_cfg, fw_file_name, data, rom->romsize);
    } else {
        if (mr) {
            rom->mr = mr;
            snprintf(devpath, sizeof(devpath), "/rom@%s", file);
        } else {
            snprintf(devpath, sizeof(devpath), "/rom@" TARGET_FMT_plx, addr);
        }
    }

    add_boot_device_path(bootindex, NULL, devpath);
    return 0;

err:
    if (fd != -1)
        close(fd);

    rom_free(rom);
    return -1;
}
Unknown