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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 |