sys/boot/ia64/libski/pal_stub.S

   1 /*
   2  * Copyright (c) 2003 Marcel Moolenaar
   3  * Copyright (c) 2001 Doug Rabson
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  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 AUTHOR 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 AUTHOR 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  * $FreeBSD: src/sys/boot/ia64/libski/pal_stub.S,v 1.3 2003/11/09 07:42:16 marcel Exp $
  29  * $DragonFly: src/sys/boot/ia64/libski/pal_stub.S,v 1.1 2003/11/10 06:08:37 dillon Exp $
  30  */
  31
  32 #include <machine/asm.h>
  33
  34         .text
  35 ENTRY(PalProc, 0)
  36         cmp.eq          p6,p0=6,r28             // PAL_PTCE_INFO
  37 (p6)    br.cond.dptk    pal_ptce_info
  38         ;;
  39         cmp.eq          p6,p0=8,r28             // PAL_VM_SUMMARY
  40 (p6)    br.cond.dptk    pal_vm_summary
  41         ;;
  42         cmp.eq          p6,p0=14,r28            // PAL_FREQ_RATIOS
  43 (p6)    br.cond.dptk    pal_freq_ratios
  44         ;;
  45         cmp.eq          p6,p0=29,r28            // PAL_HALT_LIGHT
  46 (p6)    br.cond.dptk    pal_halt_light
  47         ;;
  48         mov             r15=66                  // EXIT
  49         break.i         0x80000                 // SSC
  50         ;;
  51 pal_ptce_info:
  52         mov             r8=0
  53         mov             r9=0                    // base
  54         movl            r10=0x0000000100000001  // loop counts (outer|inner)
  55         mov             r11=0x0000000000000000  // loop strides (outer|inner)
  56         br.sptk         b0
  57 pal_vm_summary:
  58         mov             r8=0
  59         movl            r9=(8<<40)|(8<<32)      // VM info 1
  60         mov             r10=(18<<8)|(41<<0)     // VM info 2
  61         mov             r11=0
  62         br.sptk         b0
  63 pal_freq_ratios:
  64         mov             r8=0
  65         movl            r9=0x0000000B00000002   // processor ratio 11/2
  66         movl            r10=0x0000000100000001  // bus ratio 1/1
  67         movl            r11=0x0000000B00000002  // ITC ratio 11/2
  68         br.sptk         b0
  69 pal_halt_light:
  70         mov             r8=0
  71         mov             r9=0
  72         mov             r10=0
  73         mov             r11=0
  74         br.sptk         b0
  75 END(PalProc)