| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * OpenSPARC T2 Processor File: n2_cmp_upk_pk_upk.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 | #define MAIN_PAGE_NUCLEUS_ALSO |
| 39 | #define MAIN_PAGE_HV_ALSO |
| 40 | |
| 41 | |
| 42 | #include "hboot.s" |
| 43 | #include "asi_s.h" |
| 44 | |
| 45 | #define L20 0x0000134000 |
| 46 | #define L21 0x0000134040 |
| 47 | |
| 48 | #define L22 0x0000134080 |
| 49 | #define L23 0x00001340c0 |
| 50 | |
| 51 | #define L24 0x0000134100 |
| 52 | #define L25 0x0000134140 |
| 53 | |
| 54 | #define L26 0x0000134180 |
| 55 | #define L27 0x00001341c0 |
| 56 | |
| 57 | .text |
| 58 | .global main |
| 59 | |
| 60 | |
| 61 | main: |
| 62 | ta T_CHANGE_HPRIV |
| 63 | nop |
| 64 | |
| 65 | get_th_id_o0: |
| 66 | ta T_RD_THID |
| 67 | |
| 68 | cmp %o1, 0x0 |
| 69 | be main_t0 |
| 70 | nop |
| 71 | |
| 72 | cmp %o1, 0x1 |
| 73 | be main_t1 |
| 74 | nop |
| 75 | |
| 76 | /************************************** |
| 77 | THREAD 0 |
| 78 | **************************************/ |
| 79 | |
| 80 | main_t0: |
| 81 | nop |
| 82 | nop |
| 83 | |
| 84 | unpark_thread1_t0: |
| 85 | wr %g0, ASI_CMP_CORE, %asi |
| 86 | set 0x2, %g4 |
| 87 | stxa %g4, [ASI_CMP_CORE_RUNNING_W1S]%asi ! Start thread1 |
| 88 | nop |
| 89 | |
| 90 | wait_for_th1_to_be_unparked_t0: |
| 91 | wr %g0, ASI_CMP_CORE, %asi |
| 92 | ldxa [ASI_CMP_CORE_RUNNING_STATUS]%asi, %l0 |
| 93 | set 0x3, %g1 |
| 94 | sub %l0, %g1, %i4 |
| 95 | brnz %i4, wait_for_th1_to_be_unparked_t0 |
| 96 | nop |
| 97 | |
| 98 | wait_for_th1_to_be_parked_t0: |
| 99 | !TH0 to park itself |
| 100 | wr %g0, ASI_CMP_CORE, %asi |
| 101 | ldxa [ASI_CMP_CORE_RUNNING_STATUS]%asi, %l0 |
| 102 | set 0x1, %g1 |
| 103 | sub %l0, %g1, %i4 |
| 104 | brnz %i4, wait_for_th1_to_be_parked_t0 |
| 105 | nop |
| 106 | |
| 107 | unpark_thread1_again_t0: |
| 108 | wr %g0, ASI_CMP_CORE, %asi |
| 109 | set 0x2, %g4 |
| 110 | stxa %g4, [ASI_CMP_CORE_RUNNING_W1S]%asi ! Start thread1 |
| 111 | nop |
| 112 | |
| 113 | wait_for_th1_to_be_unparked_again_t0: |
| 114 | wr %g0, ASI_CMP_CORE, %asi |
| 115 | ldxa [ASI_CMP_CORE_RUNNING_STATUS]%asi, %l0 |
| 116 | set 0x3, %g1 |
| 117 | sub %l0, %g1, %i4 |
| 118 | brnz %i4, wait_for_th1_to_be_parked_t0 |
| 119 | nop |
| 120 | |
| 121 | ba test_pass |
| 122 | nop |
| 123 | |
| 124 | |
| 125 | /************************************** |
| 126 | THREAD 1 |
| 127 | **************************************/ |
| 128 | main_t1: |
| 129 | nop |
| 130 | nop |
| 131 | nop |
| 132 | |
| 133 | park_itself_t1: |
| 134 | wr %g0, ASI_CMP_CORE, %asi |
| 135 | set 0x2, %g4 |
| 136 | stxa %g4, [ASI_CMP_CORE_RUNNING_W1C]%asi ! TH1 parks itself |
| 137 | ! membar 0x40 |
| 138 | |
| 139 | thread1_unparked_t1: |
| 140 | wr %g0, ASI_CMP_CORE, %asi |
| 141 | ldxa [ASI_CMP_CORE_RUNNING_STATUS]%asi, %l0 |
| 142 | set 0x3, %g1 |
| 143 | subcc %l0, %g1, %i4 |
| 144 | brnz %i4, test_fail |
| 145 | nop |
| 146 | |
| 147 | ba test_pass |
| 148 | nop |
| 149 | |
| 150 | |
| 151 | /****************************************************** |
| 152 | * Exit code |
| 153 | *******************************************************/ |
| 154 | |
| 155 | test_pass: |
| 156 | EXIT_GOOD |
| 157 | |
| 158 | test_fail: |
| 159 | EXIT_BAD |
| 160 | |