xref: /xnu-12377.41.6/tests/arm_comm_page.c (revision bbb1b6f9e71b8cdde6e5cd6f4841f207dee3d828)
1*bbb1b6f9SApple OSS Distributions /*
2*bbb1b6f9SApple OSS Distributions  * Copyright (c) 2019 Apple Computer, Inc. All rights reserved.
3*bbb1b6f9SApple OSS Distributions  *
4*bbb1b6f9SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*bbb1b6f9SApple OSS Distributions  *
6*bbb1b6f9SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*bbb1b6f9SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*bbb1b6f9SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*bbb1b6f9SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*bbb1b6f9SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*bbb1b6f9SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*bbb1b6f9SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*bbb1b6f9SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*bbb1b6f9SApple OSS Distributions  *
15*bbb1b6f9SApple OSS Distributions  * Please obtain a copy of the License at
16*bbb1b6f9SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*bbb1b6f9SApple OSS Distributions  *
18*bbb1b6f9SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*bbb1b6f9SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*bbb1b6f9SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*bbb1b6f9SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*bbb1b6f9SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*bbb1b6f9SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*bbb1b6f9SApple OSS Distributions  * limitations under the License.
25*bbb1b6f9SApple OSS Distributions  *
26*bbb1b6f9SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*bbb1b6f9SApple OSS Distributions  */
28*bbb1b6f9SApple OSS Distributions 
29*bbb1b6f9SApple OSS Distributions #include <darwintest.h>
30*bbb1b6f9SApple OSS Distributions #include <pthread.h>
31*bbb1b6f9SApple OSS Distributions #include <machine/cpu_capabilities.h>
32*bbb1b6f9SApple OSS Distributions #include <sys/types.h>
33*bbb1b6f9SApple OSS Distributions 
34*bbb1b6f9SApple OSS Distributions T_GLOBAL_META(
35*bbb1b6f9SApple OSS Distributions 	T_META_NAMESPACE("xnu.arm"),
36*bbb1b6f9SApple OSS Distributions 	T_META_RADAR_COMPONENT_NAME("xnu"),
37*bbb1b6f9SApple OSS Distributions 	T_META_RADAR_COMPONENT_VERSION("arm"),
38*bbb1b6f9SApple OSS Distributions 	T_META_OWNER("jharmening"),
39*bbb1b6f9SApple OSS Distributions 	T_META_RUN_CONCURRENTLY(true));
40*bbb1b6f9SApple OSS Distributions 
41*bbb1b6f9SApple OSS Distributions T_DECL(arm_comm_page_sanity,
42*bbb1b6f9SApple OSS Distributions     "Test that arm comm page values are sane.")
43*bbb1b6f9SApple OSS Distributions {
44*bbb1b6f9SApple OSS Distributions #if !defined(__arm64__)
45*bbb1b6f9SApple OSS Distributions 	T_SKIP("Running on non-arm target, skipping...");
46*bbb1b6f9SApple OSS Distributions #else
47*bbb1b6f9SApple OSS Distributions 	uint8_t page_shift = COMM_PAGE_READ(uint8_t, KERNEL_PAGE_SHIFT_LEGACY);
48*bbb1b6f9SApple OSS Distributions 	T_QUIET; T_ASSERT_NE(page_shift, 0, "check that legacy kernel page shift is non-zero");
49*bbb1b6f9SApple OSS Distributions 	T_QUIET; T_ASSERT_EQ(COMM_PAGE_READ(uint8_t, KERNEL_PAGE_SHIFT), page_shift,
50*bbb1b6f9SApple OSS Distributions 	    "check that 'new' and 'legacy' page shifts are identical");
51*bbb1b6f9SApple OSS Distributions 	T_QUIET; T_ASSERT_EQ(COMM_PAGE_READ(uint32_t, DEV_FIRM_LEGACY), COMM_PAGE_READ(uint32_t, DEV_FIRM),
52*bbb1b6f9SApple OSS Distributions 	    "check that 'new' and 'legacy' DEV_FIRM fields are identical");
53*bbb1b6f9SApple OSS Distributions #endif
54*bbb1b6f9SApple OSS Distributions }
55