boot.h (2978B)
1 /* $Id: //depot/blt/include/boot.h#3 $ 2 ** 3 ** Copyright 1998 Brian J. Swetland 4 ** All rights reserved. 5 ** 6 ** Redistribution and use in source and binary forms, with or without 7 ** modification, are permitted provided that the following conditions 8 ** are met: 9 ** 1. Redistributions of source code must retain the above copyright 10 ** notice, this list of conditions, and the following disclaimer. 11 ** 2. Redistributions in binary form must reproduce the above copyright 12 ** notice, this list of conditions, and the following disclaimer in the 13 ** documentation and/or other materials provided with the distribution. 14 ** 3. The name of the author may not be used to endorse or promote products 15 ** derived from this software without specific prior written permission. 16 ** 17 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _BOOT_H_ 30 #define _BOOT_H_ 31 32 #define BOOTDIR_NAMELEN 32 33 #define BOOTDIR_MAX_ENTRIES 64 34 #define BOOTDIR_DIRECTORY "SBBB/Directory" 35 36 typedef struct { 37 char be_name[BOOTDIR_NAMELEN]; /* name of loaded object, zero terminated */ 38 int be_offset; /* offset of object relative to the start of boot_dir */ 39 int be_type; /* object type designator */ 40 int be_size; /* size of loaded object (pages) */ 41 int be_vsize; /* size loaded object should occupy when mapped in */ 42 int be_extra0; 43 int be_extra1; 44 int be_extra2; 45 int be_extra3; 46 } boot_entry; 47 48 typedef struct { 49 boot_entry bd_entry[BOOTDIR_MAX_ENTRIES]; 50 } boot_dir; 51 52 /* void _start(uint32 mem, char *params, boot_dir *bd); */ 53 54 #define BE_TYPE_NONE 0 /* empty entry */ 55 #define BE_TYPE_DIRECTORY 1 /* directory (entry 0) */ 56 #define BE_TYPE_BOOTSTRAP 2 /* bootstrap code object (entry 1) */ 57 #define BE_TYPE_CODE 3 /* executable code object */ 58 #define BE_TYPE_DATA 4 /* raw data object */ 59 #define BE_TYPE_ELF32 5 /* 32bit ELF object */ 60 61 /* for BE_TYPE_CODE */ 62 #define be_code_vaddr be_extra0 /* virtual address (rel offset 0) */ 63 #define be_code_ventr be_extra1 /* virtual entry point (rel offset 0) */ 64 65 #endif 66