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      1 /* $NetBSD: ofw_machdep.h,v 1.7 2025/09/21 13:51:50 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2021 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _POWERPC_OFW_MACHDEP_H_
     30 #define _POWERPC_OFW_MACHDEP_H_
     31 
     32 #ifdef _KERNEL
     33 #include <machine/powerpc.h>
     34 
     35 /*
     36  * The general format of an OpenFirmware virtual translation record is:
     37  *
     38  *	cell(s)		virt
     39  *	cell(s)		size
     40  *	cell(s)		phys
     41  *	cell		mode
     42  *
     43  * "mode" contains PTE WIMG bits.
     44  *
     45  * We define this structure to describe these translations that's independent
     46  * of the number of cells each field consumes.
     47  */
     48 struct OF_translation {
     49 	vaddr_t		virt;
     50 	vsize_t		size;
     51 	paddr_t		phys;
     52 	uint32_t	mode;
     53 };
     54 
     55 #define	OFW_MAX_TRANSLATIONS	48
     56 
     57 extern bool ofwbootcons_suppress; /* suppress OF console I/O */
     58 
     59 extern int ofw_chosen;		/* cached handle for "/chosen" */
     60 extern struct OF_translation ofw_translations[OFW_MAX_TRANSLATIONS];
     61 
     62 void	ofw_bootstrap(void);
     63 void	ofw_device_register(device_t dev, void *aux);
     64 void 	ofprint(const char *, ...);
     65 
     66 #endif /* _KERNEL */
     67 
     68 #endif /* _POWERPC_OFW_MACHDEP_H_ */
     69