RTEMS: bsps/arm/include/bsp/arm-errata.h Source File

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arm-errata.h
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1
9/*
10 * Copyright (c) 2014 embedded brains GmbH. All rights reserved.
11 *
12 * embedded brains GmbH
13 * Dornierstr. 4
14 * 82178 Puchheim
15 * Germany
16 * <rtems@embedded-brains.de>
17 *
18 * The license and distribution terms for this file may be
19 * found in the file LICENSE in this distribution or at
20 * http://www.rtems.org/license/LICENSE.
21 */
22
23#ifndef ARM_ERRATA_H_
24#define ARM_ERRATA_H_
25
26#include <bsp/arm-release-id.h>
27#include <libcpu/arm-cp15.h>
28
29#ifdef __cplusplus
30extern "C" {
31#endif /* __cplusplus */
32
33static inline arm_release_id arm_errata_get_processor_release(void)
34{
35 const uint32_t MIDR = arm_cp15_get_id_code();
36 const uint8_t REVISION = (MIDR & 0xF00000U) >> 20;
37 const uint8_t PATCH_LEVEL = (MIDR & 0xFU);
38
39 return ARM_RELEASE_ID_FROM_NUMBER_AND_PATCH_LEVEL(
40 REVISION,
41 PATCH_LEVEL
42 );
43}
44
45static inline bool arm_errata_is_applicable_processor_errata_764369(void)
46{
47#if defined(RTEMS_SMP)
48 const arm_release_id RELEASE = arm_errata_get_processor_release();
49 bool is_applicable = false;
50
51 /* Errata information for Cortex-A9 processors.
52 * Information taken from ARMs
53 * "Cortex-A series processors
54 * - Cortex-A9
55 * - Software Developers Errata Notice
56 * - Revision r4 revisions
57 * - ARM Cortex-A9 processors r4 release Software Developers Errata Notice"
58 * The corresponding link is: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0360f/BABJFIBA.html
59 * Please see this document for more information on these erratas */
60
61 switch( RELEASE ) {
62 case ARM_RELEASE_ID_R4_P1:
63 case ARM_RELEASE_ID_R4_P4:
64 case ARM_RELEASE_ID_R3_P0:
65 case ARM_RELEASE_ID_R2_P10:
66 case ARM_RELEASE_ID_R2_P8:
67 case ARM_RELEASE_ID_R2_P6:
68 case ARM_RELEASE_ID_R2_P4:
69 case ARM_RELEASE_ID_R2_P3:
70 case ARM_RELEASE_ID_R2_P2:
71 case ARM_RELEASE_ID_R2_P0:
72 is_applicable = true;
73 break;
74 default:
75 is_applicable = false;
76 break;
77 }
78
79 return is_applicable;
80#else
81 return false;
82#endif
83}
84
85static inline bool arm_errata_is_applicable_processor_errata_775420(void)
86{
87 const arm_release_id RELEASE = arm_errata_get_processor_release();
88 bool is_applicable = false;
89
90 /* Errata information for Cortex-A9 processors.
91 * Information taken from ARMs
92 * "Cortex-A series processors
93 * - Cortex-A9
94 * - Software Developers Errata Notice
95 * - Revision r4 revisions
96 * - ARM Cortex-A9 processors r4 release Software Developers Errata Notice"
97 * The corresponding link is: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0360f/BABJFIBA.html
98 * Please see this document for more information on these erratas */
99
100 switch( RELEASE ) {
101 case ARM_RELEASE_ID_R2_P10:
102 case ARM_RELEASE_ID_R2_P8:
103 case ARM_RELEASE_ID_R2_P6:
104 case ARM_RELEASE_ID_R2_P4:
105 case ARM_RELEASE_ID_R2_P3:
106 case ARM_RELEASE_ID_R2_P2:
107 is_applicable = true;
108 break;
109 default:
110 is_applicable = false;
111 break;
112 }
113
114 return is_applicable;
115}
116
117#ifdef __cplusplus
118}
119#endif /* __cplusplus */
120
121#endif /* ARM_ERRATA_H_ */
arm-cp15.h
ARM co-processor 15 (CP15) API.
arm-release-id.h
Create #defines for release IDs.