1 /* 2 * Copyright (c) 2024-2025, Arm Limited and Contributors. All rights reserved. 3 * 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> 11 #include <cortex_a75.h> 12 #include <cortex_a520.h> 13 #include <cortex_a710.h> 14 #include <cortex_a715.h> 15 #include <cortex_a720.h> 16 #include <cortex_a720_ae.h> 17 #include <cortex_a725.h> 18 #include <cortex_x4.h> 19 #include <lib/cpus/cpu_ops.h> 20 #include <lib/cpus/errata.h> 21 22 #if ERRATA_A520_2938996 || ERRATA_X4_2726228 23 unsigned int check_if_affected_core(void) 24 { 25 uint32_t midr_val = read_midr(); 26 long rev_var = cpu_get_rev_var(); 27 28 if (EXTRACT_PARTNUM(midr_val) == EXTRACT_PARTNUM(CORTEX_A520_MIDR)) { 29 return check_erratum_cortex_a520_2938996(rev_var); 30 } else if (EXTRACT_PARTNUM(midr_val) == EXTRACT_PARTNUM(CORTEX_X4_MIDR)) { 31 return check_erratum_cortex_x4_2726228(rev_var); 32 } 33 34 return ERRATA_NOT_APPLIES; 35 } 36 #endif 37 38 #if ERRATA_A75_764081 39 bool errata_a75_764081_applies(void) 40 { 41 long rev_var = cpu_get_rev_var(); 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 49 bool errata_ich_vmcr_el2_applies(void) 50 { 51 switch (EXTRACT_PARTNUM(read_midr())) { 52 #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 59 #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 66 #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 73 #if ERRATA_A720_AE_3699562 74 case EXTRACT_PARTNUM(CORTEX_A720_AE_MIDR): 75 if (check_erratum_cortex_a720_ae_3699562(cpu_get_rev_var()) == ERRATA_APPLIES) 76 return true; 77 break; 78 #endif /* ERRATA_A720_AE_3699562 */ 79 80 #if ERRATA_A725_3699564 81 case EXTRACT_PARTNUM(CORTEX_A725_MIDR): 82 if (check_erratum_cortex_a725_3699564(cpu_get_rev_var()) == ERRATA_APPLIES) 83 return true; 84 break; 85 #endif /* ERRATA_A725_3699564 */ 86 default: 87 break; 88 } 89 90 return false; 91 } 92