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Annotation of Gnu-Mach/include/mach/boot.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Copyright (c) 1994 The University of Utah and
        !             3:  * the Computer Systems Laboratory at the University of Utah (CSL).
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * Permission to use, copy, modify and distribute this software is hereby
        !             7:  * granted provided that (1) source code retains these copyright, permission,
        !             8:  * and disclaimer notices, and (2) redistributions including binaries
        !             9:  * reproduce the notices in supporting documentation, and (3) all advertising
        !            10:  * materials mentioning features or use of this software display the following
        !            11:  * acknowledgement: ``This product includes software developed by the
        !            12:  * Computer Systems Laboratory at the University of Utah.''
        !            13:  *
        !            14:  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
        !            15:  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
        !            16:  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            17:  *
        !            18:  * CSL requests users of this software to return to [email protected] any
        !            19:  * improvements that they make and grant CSL redistribution rights.
        !            20:  *
        !            21:  *      Author: Bryan Ford, University of Utah CSL
        !            22:  */
        !            23: #ifndef _MACH_BOOT_
        !            24: #define _MACH_BOOT_
        !            25: 
        !            26: #include <mach/machine/boot.h>
        !            27: 
        !            28: #ifndef ASSEMBLER
        !            29: 
        !            30: #include <mach/machine/vm_types.h>
        !            31: 
        !            32: struct boot_image_info
        !            33: {
        !            34:        /* First of the chain of boot modules in the boot image.  */
        !            35:        struct boot_module *first_bmod;
        !            36: 
        !            37:        /* List of rendezvous points:
        !            38:           starts out 0; and bmods can add nodes as needed.  */
        !            39:        struct boot_rendezvous *first_rzv;
        !            40: 
        !            41:        /* These register the total virtual address extent of the boot image.  */
        !            42:        vm_offset_t start, end;
        !            43: 
        !            44:        /* Machine-dependent boot information.  */
        !            45:        struct machine_boot_image_info mboot;
        !            46: };
        !            47: 
        !            48: struct boot_module
        !            49: {
        !            50:        int magic;
        !            51:        int (*init)(struct boot_image_info *bii);
        !            52:        vm_offset_t text;
        !            53:        vm_offset_t etext;
        !            54:        vm_offset_t data;
        !            55:        vm_offset_t edata;
        !            56:        vm_offset_t bss;
        !            57:        vm_offset_t ebss;
        !            58: };
        !            59: #define BMOD_VALID(bmod) ((bmod)->magic == BMOD_MAGIC)
        !            60: #define BMOD_NEXT(bmod) ((struct boot_module*)((bmod)->edata))
        !            61: 
        !            62: struct boot_rendezvous
        !            63: {
        !            64:        struct boot_rendezvous *next;
        !            65:        int code;
        !            66: };
        !            67: 
        !            68: #endif !ASSEMBLER
        !            69: 
        !            70: 
        !            71: /* This is the magic value that must appear in boot_module.magic.  */
        !            72: #define BMOD_MAGIC             0x424d4f44      /* 'BMOD' */
        !            73: 
        !            74: 
        !            75: /* Following are the codes for boot_rendezvous.code.  */
        !            76: 
        !            77: /* This rendezvous is used for choosing a microkernel to start.
        !            78:    XX not used yet  */
        !            79: #define BRZV_KERNEL    'K'
        !            80: 
        !            81: /* Once the microkernel is fully initialized,
        !            82:    it starts one or more bootstrap services...  */
        !            83: #define BRZV_BOOTSTRAP 'B'
        !            84: 
        !            85: /* The bootstrap services might need other OS-dependent data,
        !            86:    such as initial programs to run, filesystem snapshots, etc.
        !            87:    These generic chunks of data are packaged up by the microkernel
        !            88:    and provided to the bootstrap services upon request.
        !            89:    XX When can they be deallocated?  */
        !            90: #define BRZV_DATA      'D'
        !            91: 
        !            92: 
        !            93: #endif _MACH_BOOT_

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