bootsvcs.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_BOOTSVCS_H
#define _SYS_BOOTSVCS_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* Boot time configuration information objects
*
* The BS_VERSION version number should be incremented when adding
* new boot_syscalls entry points. The kernel can check the boot_syscalls
* version number by looking up the BS_VERSION_PROP property in the
* device tree. This version number allows the kernel to detect if the
* version of boot.bin that loaded it supports newer boot_syscalls entry
* points. This in turn allows the kernel to potentially support
* backward compatibility with older versions of boot.bin that don't
* support newer entry points.
*
* (Before we get too carried away with extending this interface,
* realize how broken it is. Even with a cleaner namespace than
* we used to have prior to S10, it is -extremely- difficult to
* interpose upon because the method pointer is NOT passed to the
* methods. We would do well to extend the bootops and EOL this
* interface as fast as possible, rather than to add more to it.)
*/
#define BS_VERSION 4
#define BS_VERSION_PROP "bs-version"
typedef struct boot_syscalls { /* offset */
int (*bsvc_getchar)(); /* 7 - getchar */
void (*bsvc_putchar)(int); /* 8 - putchar */
int (*bsvc_ischar)(); /* 9 - ischar */
} boot_syscalls_t;
#ifdef _KMDB
extern boot_syscalls_t *kmdb_sysp;
#define SYSP kmdb_sysp
#else /* !_KMDB */
extern boot_syscalls_t *sysp;
#define SYSP sysp
#endif
#define BSVC_GETCHAR(sysp) (((sysp)->bsvc_getchar)())
#define BSVC_PUTCHAR(sysp, c) (((sysp)->bsvc_putchar)(c))
#define BSVC_ISCHAR(sysp) (((sysp)->bsvc_ischar)())
#ifdef __cplusplus
}
#endif
#endif /* _SYS_BOOTSVCS_H */