HelenOS sources

root/kernel/arch/arm64/include/arch/boot/boot.h

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/*
 * Copyright (c) 2015 Petr Pavlu
 * 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 kernel_arm64
 * @{
 */
/** @file
 * @brief Shared interface between the bootcode and the kernel.
 */

#ifndef KERN_arm64_BOOT_H_
#define KERN_arm64_BOOT_H_

#define BOOT_OFFSET  0x80000

#ifndef __ASSEMBLER__
#include <stddef.h>

#define BOOTINFO_TASK_NAME_BUFLEN  32
#define TASKMAP_MAX_RECORDS        32
#define MEMMAP_MAX_RECORDS        128

/** Task structure. */
typedef struct {
        /** Address where the task was placed. */
        void *addr;
        /** Size of the task's binary. */
        size_t size;
        /** Task name. */
        char name[BOOTINFO_TASK_NAME_BUFLEN];
} utask_t;

/** Task map structure. */
typedef struct {
        /** Number of boot tasks. */
        size_t cnt;
        /** Boot task data. */
        utask_t tasks[TASKMAP_MAX_RECORDS];
} taskmap_t;

/** Memory zone types. */
typedef enum {
        /** Unusuable memory. */
        MEMTYPE_UNUSABLE,
        /** Usable memory. */
        MEMTYPE_AVAILABLE,
        /** Memory that can be used after ACPI is enabled. */
        MEMTYPE_ACPI_RECLAIM
} memtype_t;

/** Memory area. */
typedef struct {
        /** Type of the memory. */
        memtype_t type;
        /** Address of the area. */
        void *start;
        /** Size of the area. */
        size_t size;
} memzone_t;

/** System memory map. */
typedef struct {
        /** Number of memory zones. */
        size_t cnt;
        /** Memory zones. */
        memzone_t zones[MEMMAP_MAX_RECORDS];
} memmap_t;

/** Bootinfo structure. */
typedef struct {
        /** Task map. */
        taskmap_t taskmap;
        /** Memory map. */
        memmap_t memmap;
} bootinfo_t;

#endif /* __ASSEMBLER__ */

#endif

/** @}
 */

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