blob: 13e5931ed24f0533eece52d0b16c5b9c3f1228b0 [file] [log] [blame]
Achin Gupta7c88f3f2014-02-18 18:09:12 +00001/*
2 * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 *
10 * Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 *
14 * Neither the name of ARM nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without specific
16 * prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <tsp.h>
32
33 .globl tsp_get_magic
34
35 .section .text, "ax"; .align 3
36
37
38/*
39 * This function raises an SMC to retrieve arguments from secure
40 * monitor/dispatcher, saves the returned arguments the array received in x0,
41 * and then returns to the caller
42 */
43tsp_get_magic:
44 /* Save address to stack */
45 stp x0, xzr, [sp, #-16]!
46
47 /* Load arguments */
48 ldr w0, _tsp_fid_get_magic
49
50 /* Raise SMC */
51 smc #0
52
53 /* Restore address from stack */
54 ldp x4, xzr, [sp], #16
55
56 /* Store returned arguments to the array */
57 stp x0, x1, [x4, #0]
Achin Gupta7c88f3f2014-02-18 18:09:12 +000058
59 ret
60
61 .align 2
62_tsp_fid_get_magic:
63 .word TSP_GET_ARGS