1 /* $OpenBSD: OSFpal.c,v 1.9 2023/01/16 07:29:32 deraadt Exp $ */
2 /* $NetBSD: OSFpal.c,v 1.8 2001/07/22 15:17:30 wiz Exp $ */
3
4 /*
5 * Copyright (c) 1994, 1996 Carnegie-Mellon University.
6 * All rights reserved.
7 *
8 * Author: Keith Bostic
9 *
10 * Permission to use, copy, modify and distribute this software and
11 * its documentation is hereby granted, provided that both the copyright
12 * notice and this permission notice appear in all copies of the
13 * software, derivative works or modified versions, and any portions
14 * thereof, and that both notices appear in supporting documentation.
15 *
16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19 *
20 * Carnegie Mellon requests users of this software to return to
21 *
22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23 * School of Computer Science
24 * Carnegie Mellon University
25 * Pittsburgh PA 15213-3890
26 *
27 * any improvements or extensions that they make and grant Carnegie the
28 * rights to redistribute these changes.
29 */
30
31 #include <sys/types.h>
32 #include <lib/libsa/stand.h>
33
34 #include <machine/prom.h>
35 #include <machine/rpb.h>
36 #include <machine/alpha_cpu.h>
37
38 paddr_t ptbr_save;
39
40 void switch_palcode(void);
41
42 void
OSFpal()43 OSFpal()
44 {
45 struct rpb *r;
46 struct pcs *p;
47
48 r = (struct rpb *)HWRPB_ADDR;
49 /*
50 * Note, cpu_number() is a VMS op, can't necessarily call it.
51 * Real fun: PAL_VMS_mfpr_whami == PAL_OSF1_rti...
52 * We might not be rpb_primary_cpu_id, but it is supposed to go
53 * first so the answer should apply to everyone.
54 */
55 p = LOCATE_PCS(r, r->rpb_primary_cpu_id);
56
57 printf("VMS PAL rev: 0x%lx\n", p->pcs_palrevisions[PALvar_OpenVMS]);
58 printf("OSF PAL rev: 0x%lx\n", p->pcs_palrevisions[PALvar_OSF1]);
59
60 if(p->pcs_pal_type==PAL_TYPE_OSF1) {
61 printf("OSF PAL code already running.\n");
62 ptbr_save = ((struct alpha_pcb *)p)->apcb_ptbr;
63 printf("PTBR is: 0x%lx\n", ptbr_save);
64 return;
65 }
66 switch_palcode();
67 memcpy(&p->pcs_pal_rev, &p->pcs_palrevisions[PALvar_OSF1],
68 sizeof(p->pcs_pal_rev));
69 printf("Switch to OSF PAL code succeeded.\n");
70 }
71
72