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721249b0c0
This patch checks if the Errata 2938996(Cortex-A520) , 2726228(Cortex-X4) applies to cores and if affected applies the errata workaround which disables TRBE. Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com> Change-Id: I53b037839820c8b3a869f393588302a365d5b97c
30 lines
799 B
C
30 lines
799 B
C
/*
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* Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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/* Runtime C routines for errata workarounds and common routines */
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#include <arch.h>
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#include <arch_helpers.h>
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#include <cortex_a520.h>
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#include <cortex_x4.h>
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#include <lib/cpus/cpu_ops.h>
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#include <lib/cpus/errata.h>
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#if ERRATA_A520_2938996 || ERRATA_X4_2726228
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unsigned int check_if_affected_core(void)
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{
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uint32_t midr_val = read_midr();
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long rev_var = cpu_get_rev_var();
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if (EXTRACT_PARTNUM(midr_val) == EXTRACT_PARTNUM(CORTEX_A520_MIDR)) {
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return check_erratum_cortex_a520_2938996(rev_var);
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} else if (EXTRACT_PARTNUM(midr_val) == EXTRACT_PARTNUM(CORTEX_X4_MIDR)) {
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return check_erratum_cortex_x4_2726228(rev_var);
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}
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return ERRATA_NOT_APPLIES;
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}
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#endif
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