xref: /titanic_44/usr/src/uts/common/io/tpm/tpm_hcall.s (revision 88ecc943b4eb72f7c4fbbd8435997b85ef171fc3)
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*
28 * Hypervisor calls used by tpm driver
29 */
30
31#include <sys/asm_linkage.h>
32
33#if defined(sun4v)
34#include <sys/hypervisor_api.h>
35
36#if defined(lint) || defined(__lint)
37
38/*ARGSUSED*/
39uint64_t
40hcall_tpm_get(uint64_t locality, uint64_t offset, uint64_t size,
41    uint64_t *value)
42{
43	return (0);
44}
45
46/*ARGSUSED*/
47uint64_t
48hcall_tpm_put(uint64_t locality, uint64_t offset, uint64_t size,
49    uint64_t value)
50{
51	return (0);
52}
53
54#else  /* lint || __lint */
55
56/*
57 * hcall_tpm_get(uint64_t locality, uint64_t offset, uint64_t size,
58 *     uint64_t *value)
59 */
60	ENTRY(hcall_tpm_get)
61	mov	%o3, %g1
62	mov	HV_TPM_GET, %o5
63	ta	FAST_TRAP
64	stx	%o1, [%g1]
65	retl
66	nop
67	SET_SIZE(hcall_tpm_get)
68
69/*
70 * uint64_t
71 * hcall_tpm_put(uint64_t locality, uint64_t offset, uint64_t size,
72 *     uint64_t value)
73 */
74	ENTRY(hcall_tpm_put)
75	mov	HV_TPM_PUT, %o5
76	ta	FAST_TRAP
77	retl
78	nop
79	SET_SIZE(hcall_tpm_put)
80
81#endif /* lint || __lint */
82
83#endif /* defined(sun4v) */
84