1 /* 2 * Copyright (c) 2024, 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_a520.h> 12 #include <cortex_x4.h> 13 #include <lib/cpus/cpu_ops.h> 14 #include <lib/cpus/errata.h> 15 16 #if ERRATA_A520_2938996 || ERRATA_X4_2726228 17 unsigned int check_if_affected_core(void) 18 { 19 uint32_t midr_val = read_midr(); 20 long rev_var = cpu_get_rev_var(); 21 22 if (EXTRACT_PARTNUM(midr_val) == EXTRACT_PARTNUM(CORTEX_A520_MIDR)) { 23 return check_erratum_cortex_a520_2938996(rev_var); 24 } else if (EXTRACT_PARTNUM(midr_val) == EXTRACT_PARTNUM(CORTEX_X4_MIDR)) { 25 return check_erratum_cortex_x4_2726228(rev_var); 26 } 27 28 return ERRATA_NOT_APPLIES; 29 } 30 #endif 31