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 "mm.h"

/** Kernel entry point address. */

#define KERNEL_VIRTUAL_ADDRESS 0x80200000

char *release = RELEASE;

#ifdef REVISION

    char *revision = ", revision " REVISION;

#else

    char *revision = "";

#endif

#ifdef TIMESTAMP

    char *timestamp = "\nBuilt on " 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));

}

/** @}

 */