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 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 /* 35 * Boot time configuration information objects 36 * 37 * The BS_VERSION version number should be incremented when adding 38 * new boot_syscalls entry points. The kernel can check the boot_syscalls 39 * version number by looking up the BS_VERSION_PROP property in the 40 * device tree. This version number allows the kernel to detect if the 41 * version of boot.bin that loaded it supports newer boot_syscalls entry 42 * points. This in turn allows the kernel to potentially support 43 * backward compatibility with older versions of boot.bin that don't 44 * support newer entry points. 45 * 46 * (Before we get too carried away with extending this interface, 47 * realize how broken it is. Even with a cleaner namespace than 48 * we used to have prior to S10, it is -extremely- difficult to 49 * interpose upon because the method pointer is NOT passed to the 50 * methods. We would do well to extend the bootops and EOL this 51 * interface as fast as possible, rather than to add more to it.) 52 */ 53 #define BS_VERSION 4 54 #define BS_VERSION_PROP "bs-version" 55 56 typedef struct boot_syscalls { /* offset */ 57 int (*bsvc_getchar)(); /* 7 - getchar */ 58 void (*bsvc_putchar)(int); /* 8 - putchar */ 59 int (*bsvc_ischar)(); /* 9 - ischar */ 60 } boot_syscalls_t; 61 62 #ifdef _KMDB 63 extern boot_syscalls_t *kmdb_sysp; 64 #define SYSP kmdb_sysp 65 #else /* !_KMDB */ 66 extern boot_syscalls_t *sysp; 67 #define SYSP sysp 68 #endif 69 70 #define BSVC_GETCHAR(sysp) (((sysp)->bsvc_getchar)()) 71 #define BSVC_PUTCHAR(sysp, c) (((sysp)->bsvc_putchar)(c)) 72 #define BSVC_ISCHAR(sysp) (((sysp)->bsvc_ischar)()) 73 74 #ifdef __cplusplus 75 } 76 #endif 77 78 #endif /* _SYS_BOOTSVCS_H */ 79