sal_stub.c revision 110211 
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 * $FreeBSD: head/sys/boot/ia64/ski/sal_stub.c 110211 2003-02-01 22:50:09Z marcel $
27 */
28
29#include <sys/types.h>
30#include <machine/md_var.h>
31#include <machine/sal.h>
32#include <stand.h>
33#include "libski.h"
34
35extern void PalProc(void);
36static sal_entry_t SalProc;
37
38struct {
39	struct sal_system_table header;
40	struct sal_entrypoint_descriptor entry;
41	struct sal_ap_wakeup_descriptor wakeup;
42} sal_systab = {
43	/* Header. */
44	{
45		SAL_SIGNATURE,
46		sizeof(sal_systab),
47		{ 00, 03 },		/* Revision 3.0. */
48		2,			/* Number of decsriptors. */
49		0,			/* XXX checksum. */
50		{ 0 },
51		{ 00, 00 },		/* XXX SAL_A version. */
52		{ 00, 00 },		/* XXX SAL_B version. */
53		"FreeBSD",
54		"Ski loader",
55		{ 0 }
56	},
57	/* Entrypoint. */
58	{
59		0,			/* Type=entrypoint descr. */
60		{ 0 },
61		0,			/* XXX PalProc. */
62		0,			/* XXX SalProc. */
63		0,			/* XXX SalProc GP. */
64		{ 0 }
65	},
66	/* AP wakeup. */
67	{
68		5,			/* Type=AP wakeup descr. */
69		0,			/* External interrupt. */
70		{ 0 },
71		255			/* Wakeup vector. */
72	}
73};
74
75static inline void
76puts(const char *s)
77{
78	s = (const char *)((7UL << 61) | (u_long)s);
79	while (*s)
80		ski_cons_putchar(*s++);
81}
82
83static struct ia64_sal_result
84SalProc(u_int64_t a1, u_int64_t a2, u_int64_t a3, u_int64_t a4, u_int64_t a5,
85    u_int64_t a6, u_int64_t a7, u_int64_t a8)
86{
87	struct ia64_sal_result res;
88
89	res.sal_status = -3;
90	res.sal_result[0] = 0;
91	res.sal_result[1] = 0;
92	res.sal_result[2] = 0;
93
94	if (a1 == SAL_FREQ_BASE) {
95		res.sal_status = 0;
96		res.sal_result[0] = 133338184;
97	} else if (a1 == SAL_SET_VECTORS) {
98		/* XXX unofficial SSC function. */
99		ssc(a2, a3, a4, a5, SSC_SAL_SET_VECTORS);
100	} else if (a1 != SAL_GET_STATE_INFO_SIZE) {
101		puts("SAL: unimplemented function called\n");
102	}
103
104	return (res);
105}
106
107void
108sal_stub_init(void)
109{
110	struct ia64_fdesc *fd;
111
112	fd = (void*)PalProc;
113	sal_systab.entry.sale_pal_proc = fd->func;
114	fd = (void*)SalProc;
115	sal_systab.entry.sale_sal_proc = fd->func;
116	sal_systab.entry.sale_sal_gp = fd->gp;
117}
118