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bd97f83a62
The project has been renamed from "Arm Trusted Firmware (ATF)" to "Trusted Firmware-A (TF-A)" long ago. A few references to the old project name that still remained in various places have now been removed. This change doesn't affect any platform files. Any "ATF" references inside platform files, still remain. Change-Id: Id97895faa5b1845e851d4d50f5750de7a55bf99e Signed-off-by: John Tsichritzis <john.tsichritzis@arm.com>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/*
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* Copyright (c) 2017-2019, 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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#include <stdarg.h>
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#include <assert.h>
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#include <stdio.h>
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#include <common/debug.h>
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#include <plat/common/platform.h>
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/* Set the default maximum log level to the `LOG_LEVEL` build flag */
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static unsigned int max_log_level = LOG_LEVEL;
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/*
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* The common log function which is invoked by TF-A code.
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* This function should not be directly invoked and is meant to be
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* only used by the log macros defined in debug.h. The function
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* expects the first character in the format string to be one of the
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* LOG_MARKER_* macros defined in debug.h.
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*/
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void tf_log(const char *fmt, ...)
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{
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unsigned int log_level;
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va_list args;
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const char *prefix_str;
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/* We expect the LOG_MARKER_* macro as the first character */
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log_level = fmt[0];
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/* Verify that log_level is one of LOG_MARKER_* macro defined in debug.h */
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assert((log_level > 0U) && (log_level <= LOG_LEVEL_VERBOSE));
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assert((log_level % 10U) == 0U);
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if (log_level > max_log_level)
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return;
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prefix_str = plat_log_get_prefix(log_level);
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while (*prefix_str != '\0') {
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(void)putchar(*prefix_str);
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prefix_str++;
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}
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va_start(args, fmt);
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(void)vprintf(fmt + 1, args);
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va_end(args);
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}
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/*
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* The helper function to set the log level dynamically by platform. The
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* maximum log level is determined by `LOG_LEVEL` build flag at compile time
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* and this helper can set a lower (or equal) log level than the one at compile.
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*/
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void tf_log_set_max_level(unsigned int log_level)
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{
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assert(log_level <= LOG_LEVEL_VERBOSE);
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assert((log_level % 10U) == 0U);
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/* Cap log_level to the compile time maximum. */
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if (log_level <= (unsigned int)LOG_LEVEL)
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max_log_level = log_level;
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}
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