Subversion Repositories HelenOS

/*

 * Copyright (c) 2007 Michal Kebrt

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/** @addtogroup arm32boot

 * @{

 */

/** @file

 *  @brief Bootstrap.

 */ 

#include "main.h"

#include "asm.h"

#include "_components.h"

#include <printf.h>

#include <macros.h>

#include "mm.h"

/** Kernel entry point address. */

#define KERNEL_VIRTUAL_ADDRESS 0x80200000

char *release = STRING(RELEASE);

#ifdef REVISION

	char *revision = ", revision " STRING(REVISION);

#else

	char *revision = "";

#endif

#ifdef TIMESTAMP

	char *timestamp = "\nBuilt on " STRING(TIMESTAMP);

#else

	char *timestamp = "";

#endif

/** Prints bootloader version information. */

static void version_print(void)

{

	printf("HelenOS ARM32 Bootloader\nRelease %s%s%s\nCopyright (c) 2007 HelenOS project\n", 

		release, revision, timestamp);

}

/** Copies all images (kernel + user tasks) to #KERNEL_VIRTUAL_ADDRESS and jumps there. */

void bootstrap(void)

{

	mmu_start();

	version_print();

	component_t components[COMPONENTS];

	init_components(components);

	bootinfo_t bootinfo;

	printf("\nMemory statistics\n");

	printf(" kernel entry point at %L\n", KERNEL_VIRTUAL_ADDRESS);

	printf(" %L: boot info structure\n", &bootinfo);

	unsigned int i, j;

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

		printf(" %L: %s image (size %d bytes)\n", 

			components[i].start, components[i].name, components[i].size);

	}

	printf("\nCopying components\n");

	unsigned int top = 0;

	bootinfo.cnt = 0;

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

		printf(" %s...", components[i].name);

		top = ALIGN_UP(top, KERNEL_PAGE_SIZE);

		memcpy(((void *) KERNEL_VIRTUAL_ADDRESS) + top, components[i].start, components[i].size);

		if (i > 0) {

			bootinfo.tasks[bootinfo.cnt].addr = ((void *) KERNEL_VIRTUAL_ADDRESS) + top;

			bootinfo.tasks[bootinfo.cnt].size = components[i].size;

			bootinfo.cnt++;

		}

		top += components[i].size;

		printf("done.\n");

	}

	printf("\nBooting the kernel...\n");

	jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, &bootinfo, sizeof(bootinfo));

}

/** @}

 */