1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_BOOTSVCS_H 28 #define _SYS_BOOTSVCS_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Boot time configuration information objects 38 * 39 * The BS_VERSION version number should be incremented when adding 40 * new boot_syscalls entry points. The kernel can check the boot_syscalls 41 * version number by looking up the BS_VERSION_PROP property in the 42 * device tree. This version number allows the kernel to detect if the 43 * version of boot.bin that loaded it supports newer boot_syscalls entry 44 * points. This in turn allows the kernel to potentially support 45 * backward compatibility with older versions of boot.bin that don't 46 * support newer entry points. 47 * 48 * (Before we get too carried away with extending this interface, 49 * realize how broken it is. Even with a cleaner namespace than 50 * we used to have prior to S10, it is -extremely- difficult to 51 * interpose upon because the method pointer is NOT passed to the 52 * methods. We would do well to extend the bootops and EOL this 53 * interface as fast as possible, rather than to add more to it.) 54 */ 55 #define BS_VERSION 4 56 #define BS_VERSION_PROP "bs-version" 57 58 typedef struct boot_syscalls { /* offset */ 59 int (*bsvc_getchar)(); /* 7 - getchar */ 60 void (*bsvc_putchar)(int); /* 8 - putchar */ 61 int (*bsvc_ischar)(); /* 9 - ischar */ 62 } boot_syscalls_t; 63 64 #ifdef _KMDB 65 extern boot_syscalls_t *kmdb_sysp; 66 #define SYSP kmdb_sysp 67 #else /* !_KMDB */ 68 extern boot_syscalls_t *sysp; 69 #define SYSP sysp 70 #endif 71 72 #define BSVC_GETCHAR(sysp) (((sysp)->bsvc_getchar)()) 73 #define BSVC_PUTCHAR(sysp, c) (((sysp)->bsvc_putchar)(c)) 74 #define BSVC_ISCHAR(sysp) (((sysp)->bsvc_ischar)()) 75 76 #ifdef __cplusplus 77 } 78 #endif 79 80 #endif /* _SYS_BOOTSVCS_H */ 81