| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * OpenSPARC T2 Processor File: ifu_basic_bicc.s |
| 5 | * Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved |
| 6 | * 4150 Network Circle, Santa Clara, California 95054, U.S.A. |
| 7 | * |
| 8 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; version 2 of the License. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | * For the avoidance of doubt, and except that if any non-GPL license |
| 24 | * choice is available it will apply instead, Sun elects to use only |
| 25 | * the General Public License version 2 (GPLv2) at this time for any |
| 26 | * software where a choice of GPL license versions is made |
| 27 | * available with the language indicating that GPLv2 or any later version |
| 28 | * may be used, or where a choice of which version of the GPL is applied is |
| 29 | * otherwise unspecified. |
| 30 | * |
| 31 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 32 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 33 | * have any questions. |
| 34 | * |
| 35 | * |
| 36 | * ========== Copyright Header End ============================================ |
| 37 | */ |
| 38 | #include "defines.h" |
| 39 | #include "old_boot.s" |
| 40 | |
| 41 | !SECTION .MAIN TEXT_VA = 0xfffffffff0000000 |
| 42 | !attr_text { |
| 43 | ! Name=.MAIN, |
| 44 | ! hypervisor |
| 45 | !} |
| 46 | |
| 47 | .text |
| 48 | .global main |
| 49 | |
| 50 | main: |
| 51 | |
| 52 | ! 1st fetch should be from RSTVaddr+0x20 |
| 53 | |
| 54 | illtrap |
| 55 | illtrap |
| 56 | illtrap |
| 57 | illtrap |
| 58 | illtrap |
| 59 | illtrap |
| 60 | illtrap |
| 61 | illtrap |
| 62 | |
| 63 | ! First intsruction fetched should be from here RSTVaddr+0x20 |
| 64 | |
| 65 | ! First set up some registers with values .. |
| 66 | |
| 67 | |
| 68 | ! Now do some useful stuff .. |
| 69 | start: |
| 70 | add %g0, 0x0000, %g1 |
| 71 | add %g0, 0x0000, %g2 |
| 72 | add %g0, 0x0000, %g3 |
| 73 | add %g0, 0x0000, %g4 |
| 74 | add %g0, 0x0000, %g5 |
| 75 | add %g0, 0x0000, %g6 |
| 76 | add %g0, 0x0000, %g7 |
| 77 | addcc %g0, 0x0000, %g7 |
| 78 | B0: addcc %g0, 0x0001, %g2 |
| 79 | ba B1 |
| 80 | addcc %g0, 0x1fff, %g1 |
| 81 | inc %g7 |
| 82 | B1: addcc %g0, 0x0001, %g2 |
| 83 | bne B2 |
| 84 | addcc %g0, 0x1fff, %g1 |
| 85 | inc %g7 |
| 86 | B2: addcc %g0, 0x0000, %g2 |
| 87 | be B3 |
| 88 | addcc %g0, 0x1fff, %g1 |
| 89 | inc %g7 |
| 90 | B3: addcc %g0, 0x0001, %g2 |
| 91 | bg B4 |
| 92 | addcc %g0, 0x1fff, %g1 |
| 93 | inc %g7 |
| 94 | B4: addcc %g0, 0x0000, %g2 |
| 95 | dec %g2 |
| 96 | ble B5 |
| 97 | addcc %g0, 0x1fff, %g1 |
| 98 | inc %g7 |
| 99 | B5: addcc %g0, 0x0001, %g2 |
| 100 | bge B6 |
| 101 | addcc %g0, 0x1fff, %g1 |
| 102 | inc %g7 |
| 103 | B6: addcc %g0, 0x0000, %g2 |
| 104 | bge B7 |
| 105 | addcc %g0, 0x1fff, %g1 |
| 106 | inc %g7 |
| 107 | B7: addcc %g0, 0x0000, %g2 |
| 108 | dec %g2 |
| 109 | bl B8 |
| 110 | addcc %g0, 0x1fff, %g1 |
| 111 | inc %g7 |
| 112 | B8: addcc %g0, 0x0001, %g2 |
| 113 | bgu B9 |
| 114 | addcc %g0, 0x1fff, %g1 |
| 115 | inc %g7 |
| 116 | B9: addcc %g0, 0x0000, %g2 |
| 117 | bleu B10 |
| 118 | addcc %g0, 0x1fff, %g1 |
| 119 | inc %g7 |
| 120 | B10: addcc %g0, 0x0001, %g2 |
| 121 | dec %g2 |
| 122 | bcc B11 |
| 123 | addcc %g0, 0x1fff, %g1 |
| 124 | inc %g7 |
| 125 | B11: addcc %g0, 0x0002, %g2 |
| 126 | dec %g2 |
| 127 | bpos B12 |
| 128 | addcc %g0, 0x1fff, %g1 |
| 129 | inc %g7 |
| 130 | B12: addcc %g0, 0x0000, %g2 |
| 131 | dec %g2 |
| 132 | bneg B13 |
| 133 | addcc %g0, 0x1fff, %g1 |
| 134 | inc %g7 |
| 135 | B13: addcc %g0, 0x0001, %g2 |
| 136 | dec %g2 |
| 137 | bvc Bx |
| 138 | addcc %g0, 0x1fff, %g1 |
| 139 | inc %g7 |
| 140 | Bx: cmp %g7, 0x0 |
| 141 | nop |
| 142 | nop |
| 143 | nop |
| 144 | nop |
| 145 | nop |
| 146 | nop |
| 147 | !good_trap: |
| 148 | ! b good_trap |
| 149 | EXIT_GOOD |
| 150 | nop |
| 151 | nop |
| 152 | |
| 153 | !SECTION .DATA TEXT_VA = 0xffffff0000000000 |
| 154 | !attr_text { |
| 155 | ! Name=.DATA, |
| 156 | ! hypervisor |
| 157 | !} |
| 158 | |
| 159 | .data |
| 160 | .xword 0x0 |
| 161 | .xword 0x1 |
| 162 | .xword 0x2 |
| 163 | .xword 0x3 |
| 164 | .xword 0x4 |
| 165 | .xword 0x5 |
| 166 | .xword 0x6 |
| 167 | .xword 0x7 |
| 168 | |
| 169 | .end |
| 170 | |
| 171 | |