| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * OpenSPARC T2 Processor File: watchdog_reset_handler.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 | mov 0xf, %g1 |
| 39 | stxa %g1, [%g0] ASI_LSU_CTL_REG |
| 40 | stxa %g0, [%g0] ASI_ERROR_INJECT |
| 41 | ! Read (H)PSTATE/PC/nPC from Trap Stack @maxtl |
| 42 | rdhpr %htstate, %g1 |
| 43 | rdpr %tstate, %g2 |
| 44 | rdpr %tpc, %g3 |
| 45 | rdpr %tnpc, %g4 |
| 46 | ! Lower the Trap Level |
| 47 | wrpr %g0, 1, %tl |
| 48 | ! Write (H)PSTATE/PC/nPC to Trap Stack @new TL |
| 49 | wrhpr %g1, %htstate |
| 50 | wrpr %g2, %tstate |
| 51 | wrpr %g3, %tpc |
| 52 | wrpr %g4, %tnpc |
| 53 | retry |