common/log_console.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Logging support
   4  *
   5  * Copyright (c) 2017 Google, Inc
   6  * Written by Simon Glass <sjg@chromium.org>
   7  */
   8
   9 #include <log.h>
  10 #include <asm/global_data.h>
  11
  12 DECLARE_GLOBAL_DATA_PTR;
  13
  14 static int log_console_emit(struct log_device *ldev, struct log_rec *rec)
  15 {
  16         int fmt = gd->log_fmt;
  17         bool add_space = false;
  18
  19         /*
  20          * The output format is designed to give someone a fighting chance of
  21          * figuring out which field is which:
  22          *    - level is in CAPS
  23          *    - cat is lower case and ends with comma
  24          *    - file normally has a .c extension and ends with a colon
  25          *    - line is integer and ends with a -
  26          *    - function is an identifier and ends with ()
  27          *    - message has a space before it unless it is on its own
  28          */
  29         if (!(rec->flags & LOGRECF_CONT) && fmt != BIT(LOGF_MSG)) {
  30                 add_space = true;
  31                 if (fmt & BIT(LOGF_LEVEL))
  32                         printf("%s.", log_get_level_name(rec->level));
  33                 if (fmt & BIT(LOGF_CAT))
  34                         printf("%s,", log_get_cat_name(rec->cat));
  35                 if (fmt & BIT(LOGF_FILE))
  36                         printf("%s:", rec->file);
  37                 if (fmt & BIT(LOGF_LINE))
  38                         printf("%d-", rec->line);
  39                 if (fmt & BIT(LOGF_FUNC)) {
  40                         if (CONFIG_IS_ENABLED(USE_TINY_PRINTF)) {
  41                                 printf("%s()", rec->func);
  42                         } else {
  43                                 printf("%*s()", CONFIG_LOGF_FUNC_PAD,
  44                                        rec->func);
  45                         }
  46                 }
  47         }
  48         if (fmt & BIT(LOGF_MSG))
  49                 printf("%s%s", add_space ? " " : "", rec->msg);
  50
  51         return 0;
  52 }
  53
  54 LOG_DRIVER(console) = {
  55         .name   = "console",
  56         .emit   = log_console_emit,
  57         .flags  = LOGDF_ENABLE,
  58 };