This is xnu-8019. See this file in:
/*
 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#include <console/video_console.h>
#include <pexpert/GearImage.h>

struct boot_progress_element {
	unsigned int        width;
	unsigned int        height;
	int                 yOffset;
	unsigned int        res[5];
	unsigned char       data[0];
};
typedef struct boot_progress_element boot_progress_element;

static const unsigned char * default_noroot_data;

static const unsigned char * default_progress_data1x = gGearPict;
static const unsigned char * default_progress_data2x = gGearPict2x;
#if !PEXPERT_NO_3X_IMAGES
static const unsigned char * default_progress_data3x = gGearPict3x;
#else
static const unsigned char * default_progress_data3x = NULL;
#endif

static vc_progress_element default_progress =
{   0, 4 | 1, 1000 / kGearFPS, kGearFrames, {0, 0, 0},
    kGearWidth, kGearHeight, 0, kGearOffset,
    0, {0, 0, 0} };

static vc_progress_element default_noroot =
{   0, 1, 0, 0, {0, 0, 0},
    128, 128, 0, 0,
    -1, {0, 0, 0} };