You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
2.2 KiB
100 lines
2.2 KiB
/*
|
|
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
/* Runtime firmware routines to report errata status for the current CPU. */
|
|
|
|
#include <arch_helpers.h>
|
|
#include <assert.h>
|
|
#include <cpu_data.h>
|
|
#include <debug.h>
|
|
#include <errata_report.h>
|
|
#include <spinlock.h>
|
|
#include <utils.h>
|
|
|
|
#ifdef IMAGE_BL1
|
|
# define BL_STRING "BL1"
|
|
#elif defined(AARCH64) && defined(IMAGE_BL31)
|
|
# define BL_STRING "BL31"
|
|
#elif defined(AARCH32) && defined(IMAGE_BL32)
|
|
# define BL_STRING "BL32"
|
|
#elif defined(IMAGE_BL2) && BL2_AT_EL3
|
|
# define BL_STRING "BL2"
|
|
#else
|
|
# error This image should not be printing errata status
|
|
#endif
|
|
|
|
/* Errata format: BL stage, CPU, errata ID, message */
|
|
#define ERRATA_FORMAT "%s: %s: CPU workaround for %s was %s\n"
|
|
|
|
/*
|
|
* Returns whether errata needs to be reported. Passed arguments are private to
|
|
* a CPU type.
|
|
*/
|
|
int errata_needs_reporting(spinlock_t *lock, uint32_t *reported)
|
|
{
|
|
int report_now;
|
|
|
|
/* If already reported, return false. */
|
|
if (*reported)
|
|
return 0;
|
|
|
|
/*
|
|
* Acquire lock. Determine whether status needs reporting, and then mark
|
|
* report status to true.
|
|
*/
|
|
spin_lock(lock);
|
|
report_now = !(*reported);
|
|
if (report_now)
|
|
*reported = 1;
|
|
spin_unlock(lock);
|
|
|
|
return report_now;
|
|
}
|
|
|
|
/*
|
|
* Print errata status message.
|
|
*
|
|
* Unknown: WARN
|
|
* Missing: WARN
|
|
* Applied: INFO
|
|
* Not applied: VERBOSE
|
|
*/
|
|
void errata_print_msg(unsigned int status, const char *cpu, const char *id)
|
|
{
|
|
/* Errata status strings */
|
|
static const char *const errata_status_str[] = {
|
|
[ERRATA_NOT_APPLIES] = "not applied",
|
|
[ERRATA_APPLIES] = "applied",
|
|
[ERRATA_MISSING] = "missing!"
|
|
};
|
|
static const char *const __unused bl_str = BL_STRING;
|
|
const char *msg __unused;
|
|
|
|
|
|
assert(status < ARRAY_SIZE(errata_status_str));
|
|
assert(cpu);
|
|
assert(id);
|
|
|
|
msg = errata_status_str[status];
|
|
|
|
switch (status) {
|
|
case ERRATA_NOT_APPLIES:
|
|
VERBOSE(ERRATA_FORMAT, bl_str, cpu, id, msg);
|
|
break;
|
|
|
|
case ERRATA_APPLIES:
|
|
INFO(ERRATA_FORMAT, bl_str, cpu, id, msg);
|
|
break;
|
|
|
|
case ERRATA_MISSING:
|
|
WARN(ERRATA_FORMAT, bl_str, cpu, id, msg);
|
|
break;
|
|
|
|
default:
|
|
WARN(ERRATA_FORMAT, bl_str, cpu, id, "unknown");
|
|
break;
|
|
}
|
|
}
|
|
|