123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
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/*
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* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Runtime firmware routines to report errata status for the current CPU. */
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#include <arch_helpers.h>
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#include <assert.h>
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#include <cpu_data.h>
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#include <debug.h>
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#include <errata_report.h>
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#include <spinlock.h>
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#include <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(AARCH32) && defined(IMAGE_BL32)
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# define BL_STRING "BL32"
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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: errata 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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int report_now;
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/* If already reported, return false. */
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if (*reported)
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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);
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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(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 >= 0 && status < ARRAY_SIZE(errata_status_str));
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assert(cpu);
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assert(id);
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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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