metalsvm/arch/x86/kernel/multiboot.c

/* 
 * Copyright 2010 Stefan Lankes, Chair for Operating Systems,
 *                               RWTH Aachen University
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * This file is part of MetalSVM.
 */

/**
 * @author Stefan Lankes
 * @file arch/x86/kernel/multiboot.c
 * @brief Multiboot structure initialization
 *
 * This file just contains a global multiboot 
 * information pointer and a tiny initialization procedure.
 */

#include <metalsvm/stddef.h>

#ifdef CONFIG_MULTIBOOT
#include <asm/multiboot.h>

/* 
 * MetalSVM is able to use Multiboot (http://www.gnu.org/software/grub/manual/multiboot/),
 * which specifies an interface between a boot loader and a operating system
 */

/** Global multiboot information structure pointer */
multiboot_info_t*	mb_info __attribute__ ((section (".data"))) = NULL;
#endif

/** @brief initialization procedure for Multiboot information structure
 *
 * @param mb Pointer to the multiboot information structure.
 * 					 Will be set as global multiboot information.
 */
void multiboot_init(void* mb)
{
#ifdef CONFIG_MULTIBOOT
	mb_info = (multiboot_info_t*) mb;
#endif
}