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bios.S revision 1.1 
      1 /*	$NetBSD: bios.S,v 1.1 2006/09/01 21:26:18 uwe Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005 NONAKA Kimihiro
      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 REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <machine/asm.h>
     30 
     31 /*
     32  * int bioscons_getc(void);
     33  */
     34 ENTRY(bioscons_getc)
     35 	mov	#0, r4
     36 	mov	#1, r0
     37 	trapa	#0x3f
     38 	rts
     39 	 nop
     40 
     41 /*
     42  * void bioscons_putc(int c);
     43  */
     44 ENTRY(bioscons_putc)
     45 	mov	#31, r0
     46 	trapa	#0x3f
     47 	rts
     48 	 nop
     49 
     50 /*
     51  * int biosdisk_read(int dev, uint32_t blkaddr, void *buf, size_t nblks);
     52  */
     53 ENTRY(biosdisk_read)
     54 	mov	#2, r0
     55 	trapa	#0x3f
     56 	rts
     57 	 nop
     58 
     59 /*
     60  * void cache_enable(void);
     61  * void cache_flush(void);
     62  */
     63 ENTRY(cache_enable)
     64 ENTRY(cache_flush)
     65 	mov     #0, r4
     66 	mov     #6, r0
     67 	trapa   #0x3f
     68 	rts
     69 	 nop
     70 
     71 /*
     72  * void cache_disable(void);
     73  */
     74 ENTRY(cache_disable)
     75 	mov     #1, r4
     76 	mov     #6, r0
     77 	trapa   #0x3f
     78 	rts
     79 	 nop
     80