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      1 /*	$NetBSD: pcr.h,v 1.2 2026/04/11 19:09:34 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2025 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _M68K_PCR_H_
     33 #define	_M68K_PCR_H_
     34 
     35 /* fields in the 68060 Processor Configuration Register */
     36 
     37 #define	PCR_ESS		__BIT(0)     /* enable superscalar dispatch */
     38 #define	PCR_DFP		__BIT(1)     /* disable floating point unit */
     39 #define	PCR_mbz		__BITS(2,6)  /* reserved - must be zero */
     40 #define	PCR_EDEBUG	__BIT(7)     /* enable debug features */
     41 #define	PCR_REVMASK	__BITS(8,15) /* revision number */
     42 #define	PCR_IDMASK	__BITS(16,31)/* identification */
     43 
     44 #define	PCR_REVISION(x)	__SHIFTOUT((x), PCR_REVMASK)
     45 #define	PCR_ID(x)	__SHIFTOUT((x), PCR_IDMASK)
     46 
     47 #define	PCR_ID_MC68060   0x0430
     48 #define	PCR_ID_MC68xC060 0x0431	/* MC68LC060 / MC60EC060 */
     49 
     50 #ifdef _KERNEL
     51 u_int	get_pcr(void);
     52 void	set_pcr(u_int);
     53 #endif
     54 
     55 #endif /* _M68K_PCR_H_ */
     56