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tz-normal.h
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1/*
2 * Copyright (c) 2026, RISE Research Institutes of Sweden
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 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * 3. Neither the name of the copyright holder nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
31 * OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/**
35 * \file
36 * Normal-world TrustZone API hooks.
37 */
38
39#ifndef TZ_NORMAL_H
40#define TZ_NORMAL_H
41
42#include <stdbool.h>
43
44/**
45 * \brief Request a poll of the normal-world TrustZone process.
46 *
47 * Safe to call from any context, including NS interrupt
48 * handlers. The platform NS-side wake handler invokes this
49 * when the secure side has signalled that it has work for
50 * the normal world to drain.
51 */
52bool tz_normal_request_poll(void);
53
54/**
55 * \brief Initialize the platform-specific mechanism that delivers
56 * secure-side wake-up requests to the normal world.
57 *
58 * Called once during normal-world TrustZone initialization.
59 * Weakly defined as a no-op so platforms without a wake
60 * mechanism still link; in that case secure-only events do
61 * not autonomously wake the normal world.
62 */
63void tz_arch_init_ns_signal(void);
64
65#endif /* TZ_NORMAL_H */
bool tz_normal_request_poll(void)
Request a poll of the normal-world TrustZone process.
Definition tz-normal.c:57
void tz_arch_init_ns_signal(void)
Initialize the platform-specific mechanism that delivers secure-side wake-up requests to the normal w...
Definition tz-normal.c:65