sal_stub.c revision 225736 
1/*-
2 * Copyright (c) 2003 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/9/sys/boot/ia64/ski/sal_stub.c 139738 2005-01-05 22:16:58Z imp $");
29
30#include <sys/types.h>
31#include <machine/md_var.h>
32#include <machine/sal.h>
33#include <stand.h>
34#include "libski.h"
35
36extern void PalProc(void);
37static sal_entry_t SalProc;
38
39struct {
40	struct sal_system_table header;
41	struct sal_entrypoint_descriptor entry;
42	struct sal_ap_wakeup_descriptor wakeup;
43} sal_systab = {
44	/* Header. */
45	{
46		SAL_SIGNATURE,
47		sizeof(sal_systab),
48		{ 00, 03 },		/* Revision 3.0. */
49		2,			/* Number of decsriptors. */
50		0,			/* XXX checksum. */
51		{ 0 },
52		{ 00, 00 },		/* XXX SAL_A version. */
53		{ 00, 00 },		/* XXX SAL_B version. */
54		"FreeBSD",
55		"Ski loader",
56		{ 0 }
57	},
58	/* Entrypoint. */
59	{
60		0,			/* Type=entrypoint descr. */
61		{ 0 },
62		0,			/* XXX PalProc. */
63		0,			/* XXX SalProc. */
64		0,			/* XXX SalProc GP. */
65		{ 0 }
66	},
67	/* AP wakeup. */
68	{
69		5,			/* Type=AP wakeup descr. */
70		0,			/* External interrupt. */
71		{ 0 },
72		255			/* Wakeup vector. */
73	}
74};
75
76static inline void
77puts(const char *s)
78{
79	s = (const char *)((7UL << 61) | (u_long)s);
80	while (*s)
81		ski_cons_putchar(*s++);
82}
83
84static struct ia64_sal_result
85SalProc(u_int64_t a1, u_int64_t a2, u_int64_t a3, u_int64_t a4, u_int64_t a5,
86    u_int64_t a6, u_int64_t a7, u_int64_t a8)
87{
88	struct ia64_sal_result res;
89
90	res.sal_status = -3;
91	res.sal_result[0] = 0;
92	res.sal_result[1] = 0;
93	res.sal_result[2] = 0;
94
95	if (a1 == SAL_FREQ_BASE) {
96		res.sal_status = 0;
97		res.sal_result[0] = 133338184;
98	} else if (a1 == SAL_SET_VECTORS) {
99		/* XXX unofficial SSC function. */
100		ssc(a2, a3, a4, a5, SSC_SAL_SET_VECTORS);
101	} else if (a1 != SAL_GET_STATE_INFO_SIZE) {
102		puts("SAL: unimplemented function called\n");
103	}
104
105	return (res);
106}
107
108void
109sal_stub_init(void)
110{
111	struct ia64_fdesc *fd;
112
113	fd = (void*)PalProc;
114	sal_systab.entry.sale_pal_proc = fd->func;
115	fd = (void*)SalProc;
116	sal_systab.entry.sale_sal_proc = fd->func;
117	sal_systab.entry.sale_sal_gp = fd->gp;
118}
119