mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-16 17:44:19 +00:00
402b3cf876
NOTE: AARCH32/AARCH64 macros are now deprecated in favor of __aarch64__. All common C compilers pre-define the same macros to signal which architecture the code is being compiled for: __arm__ for AArch32 (or earlier versions) and __aarch64__ for AArch64. There's no need for TF-A to define its own custom macros for this. In order to unify code with the export headers (which use __aarch64__ to avoid another dependency), let's deprecate the AARCH32 and AARCH64 macros and switch the code base over to the pre-defined standard macro. (Since it is somewhat unintuitive that __arm__ only means AArch32, let's standardize on only using __aarch64__.) Change-Id: Ic77de4b052297d77f38fc95f95f65a8ee70cf200 Signed-off-by: Julius Werner <jwerner@chromium.org>
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/*
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* Copyright (c) 2017-2018, 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 firmware routines to report errata status for the current CPU. */
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#include <assert.h>
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#include <stdbool.h>
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#include <arch_helpers.h>
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#include <common/debug.h>
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#include <lib/cpus/errata_report.h>
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#include <lib/el3_runtime/cpu_data.h>
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#include <lib/spinlock.h>
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#include <lib/utils.h>
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#ifdef IMAGE_BL1
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# define BL_STRING "BL1"
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#elif defined(__aarch64__) && defined(IMAGE_BL31)
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# define BL_STRING "BL31"
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#elif !defined(__arch64__) && defined(IMAGE_BL32)
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# define BL_STRING "BL32"
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#elif defined(IMAGE_BL2) && BL2_AT_EL3
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# define BL_STRING "BL2"
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#else
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# error This image should not be printing errata status
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#endif
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/* Errata format: BL stage, CPU, errata ID, message */
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#define ERRATA_FORMAT "%s: %s: CPU workaround for %s was %s\n"
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/*
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* Returns whether errata needs to be reported. Passed arguments are private to
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* a CPU type.
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*/
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int errata_needs_reporting(spinlock_t *lock, uint32_t *reported)
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{
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bool report_now;
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/* If already reported, return false. */
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if (*reported != 0U)
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return 0;
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/*
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* Acquire lock. Determine whether status needs reporting, and then mark
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* report status to true.
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*/
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spin_lock(lock);
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report_now = (*reported == 0U);
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if (report_now)
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*reported = 1;
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spin_unlock(lock);
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return report_now;
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}
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/*
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* Print errata status message.
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*
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* Unknown: WARN
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* Missing: WARN
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* Applied: INFO
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* Not applied: VERBOSE
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*/
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void errata_print_msg(unsigned int status, const char *cpu, const char *id)
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{
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/* Errata status strings */
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static const char *const errata_status_str[] = {
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[ERRATA_NOT_APPLIES] = "not applied",
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[ERRATA_APPLIES] = "applied",
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[ERRATA_MISSING] = "missing!"
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};
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static const char *const __unused bl_str = BL_STRING;
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const char *msg __unused;
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assert(status < ARRAY_SIZE(errata_status_str));
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assert(cpu != NULL);
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assert(id != NULL);
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msg = errata_status_str[status];
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switch (status) {
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case ERRATA_NOT_APPLIES:
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VERBOSE(ERRATA_FORMAT, bl_str, cpu, id, msg);
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break;
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case ERRATA_APPLIES:
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INFO(ERRATA_FORMAT, bl_str, cpu, id, msg);
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break;
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case ERRATA_MISSING:
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WARN(ERRATA_FORMAT, bl_str, cpu, id, msg);
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break;
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default:
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WARN(ERRATA_FORMAT, bl_str, cpu, id, "unknown");
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break;
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}
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}
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