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Arvind Ram Prakash10cd41d2024-08-05 16:11:42 -05001/*
Govindraj Raja8c6068f2025-01-29 15:01:10 -06002 * Copyright (c) 2024-2025, Arm Limited and Contributors. All rights reserved.
Arvind Ram Prakash10cd41d2024-08-05 16:11:42 -05003 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7/* Runtime C routines for errata workarounds and common routines */
8
9#include <arch.h>
10#include <arch_helpers.h>
Sona Mathew578d3572024-07-10 18:04:40 -050011#include <cortex_a75.h>
Govindraj Raja8c6068f2025-01-29 15:01:10 -060012#include <cortex_a520.h>
Govindraj Rajac32e3a32025-01-21 12:32:14 -060013#include <cortex_a710.h>
Govindraj Raja3b8a3ad2025-01-21 17:00:11 -060014#include <cortex_a715.h>
Govindraj Rajac7d5de92025-01-21 17:12:33 -060015#include <cortex_a720.h>
Govindraj Raja2296df62025-01-21 18:02:51 -060016#include <cortex_x2.h>
Arvind Ram Prakash10cd41d2024-08-05 16:11:42 -050017#include <cortex_x4.h>
18#include <lib/cpus/cpu_ops.h>
19#include <lib/cpus/errata.h>
20
21#if ERRATA_A520_2938996 || ERRATA_X4_2726228
22unsigned int check_if_affected_core(void)
23{
24 uint32_t midr_val = read_midr();
25 long rev_var = cpu_get_rev_var();
26
27 if (EXTRACT_PARTNUM(midr_val) == EXTRACT_PARTNUM(CORTEX_A520_MIDR)) {
28 return check_erratum_cortex_a520_2938996(rev_var);
29 } else if (EXTRACT_PARTNUM(midr_val) == EXTRACT_PARTNUM(CORTEX_X4_MIDR)) {
30 return check_erratum_cortex_x4_2726228(rev_var);
31 }
32
33 return ERRATA_NOT_APPLIES;
34}
35#endif
Sona Mathew578d3572024-07-10 18:04:40 -050036
37#if ERRATA_A75_764081
38bool errata_a75_764081_applies(void)
39{
40 long rev_var = cpu_get_rev_var();
41
42 if (check_erratum_cortex_a75_764081(rev_var) == ERRATA_APPLIES) {
43 return true;
44 }
45 return false;
46}
47#endif /* ERRATA_A75_764081 */
48
Govindraj Raja8c6068f2025-01-29 15:01:10 -060049bool errata_ich_vmcr_el2_applies(void)
50{
51 switch (EXTRACT_PARTNUM(read_midr())) {
Govindraj Rajac32e3a32025-01-21 12:32:14 -060052#if ERRATA_A710_3701772
53 case EXTRACT_PARTNUM(CORTEX_A710_MIDR):
54 if (check_erratum_cortex_a710_3701772(cpu_get_rev_var()) == ERRATA_APPLIES)
55 return true;
56 break;
57#endif /* ERRATA_A710_3701772 */
58
Govindraj Raja3b8a3ad2025-01-21 17:00:11 -060059#if ERRATA_A715_3699560
60 case EXTRACT_PARTNUM(CORTEX_A715_MIDR):
61 if (check_erratum_cortex_a715_3699560(cpu_get_rev_var()) == ERRATA_APPLIES)
62 return true;
63 break;
64#endif /* ERRATA_A715_3699560 */
65
Govindraj Rajac7d5de92025-01-21 17:12:33 -060066#if ERRATA_A720_3699561
67 case EXTRACT_PARTNUM(CORTEX_A720_MIDR):
68 if (check_erratum_cortex_a720_3699561(cpu_get_rev_var()) == ERRATA_APPLIES)
69 return true;;
70 break;
71#endif /* ERRATA_A720_3699561 */
72
Govindraj Raja2296df62025-01-21 18:02:51 -060073#if ERRATA_X2_3701772
74 case EXTRACT_PARTNUM(CORTEX_X2_MIDR):
75 if (check_erratum_cortex_x2_3701772(cpu_get_rev_var()) == ERRATA_APPLIES)
76 return true;
77 break;
78#endif /* ERRATA_X2_3701772 */
79
Govindraj Raja8c6068f2025-01-29 15:01:10 -060080 default:
81 break;
82 }
83
84 return false;
85}