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Annotation of kernel/machdep/ppc/kernBootStruct.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * kernBootStruct.h
        !            27:  * What the booter leaves behind for the kernel.
        !            28:  */
        !            29: 
        !            30: #define GRAPHICS_MODE  1
        !            31: #define TEXT_MODE 0
        !            32: 
        !            33: #define KERNBOOTMAGIC 0xa7a7a7a7
        !            34: 
        !            35: /* The config table has room for 12 drivers if their config files
        !            36:  * are the maximum size allowed.
        !            37:  */
        !            38: #define CONFIG_SIZE (12 * 4096)
        !            39: 
        !            40: /* Maximum number of boot drivers supported, assuming their
        !            41:  * config files fit in the bootstruct.
        !            42:  */
        !            43: #define NDRIVERS               64
        !            44: 
        !            45: #ifndef __ASSEMBLER__
        !            46: 
        !            47: typedef struct {
        !            48:     char    *address;                  // address where driver was loaded
        !            49:     int            size;                       // entry point for driver
        !            50: } driver_config_t;
        !            51: 
        !            52: typedef struct {
        !            53:     short   version;
        !            54:     char    bootString[160];           // string we booted with
        !            55:     int            magicCookie;                // KERNBOOTMAGIC if struct valid
        !            56:     int            rootdev;                    // booters guess as to rootdev
        !            57:     int            convmem;                    // conventional memory
        !            58:     char    boot_file[128];            // name of the kernel we booted
        !            59:     int            first_addr0;                // first address for kern convmem
        !            60:     int            graphicsMode;               // did we boot in graphics mode?
        !            61:     int            kernDev;                    // device kernel was fetched from
        !            62:     int     numBootDrivers;            // number of drivers loaded by booter    
        !            63:     char    *configEnd;                        // pointer to end of config files
        !            64:     int            kaddr;                      // kernel load address
        !            65:     int     ksize;                     // size of kernel
        !            66:     void    *rld_entry;                        // entry point for standalone rld
        !            67: 
        !            68:     driver_config_t driverConfig[NDRIVERS];    // ??
        !            69:     
        !            70:     char   _reserved[4052 - sizeof(driver_config_t) * NDRIVERS];
        !            71: 
        !            72:     char   config[CONFIG_SIZE];                // the config file contents
        !            73: } KERNBOOTSTRUCT;
        !            74: 
        !            75: #ifdef KERNEL
        !            76: #define static_KERNBOOTSTRUCT (*KERNSTRUCT_ADDR)
        !            77: extern KERNBOOTSTRUCT *KERNSTRUCT_ADDR;
        !            78: #else  
        !            79: /* The assumption is that the booter is the only other consumer of this */
        !            80: extern KERNBOOTSTRUCT *kernBootStruct;
        !            81: #undef KERNSTRUCT_ADDR
        !            82: // #define KERNSTRUCT_ADDR ((KERNBOOTSTRUCT *) BOOTSTRUCT_ADDR)
        !            83: #endif
        !            84: 
        !            85: #endif /* __ASSEMBLER__ */

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