cmd/log.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Google, Inc
   4  * Written by Simon Glass <sjg@chromium.org>
   5  */
   6
   7 #include <common.h>
   8 #include <command.h>
   9 #include <dm.h>
  10 #include <log.h>
  11
  12 static char log_fmt_chars[LOGF_COUNT] = "clFLfm";
  13
  14 static int do_log_level(struct cmd_tbl *cmdtp, int flag, int argc,
  15                         char *const argv[])
  16 {
  17         if (argc > 1) {
  18                 long log_level = simple_strtol(argv[1], NULL, 10);
  19
  20                 if (log_level < 0 || log_level > _LOG_MAX_LEVEL) {
  21                         printf("Only log levels <= %d are supported\n",
  22                                _LOG_MAX_LEVEL);
  23                         return CMD_RET_FAILURE;
  24                 }
  25                 gd->default_log_level = log_level;
  26         } else {
  27                 printf("Default log level: %d\n", gd->default_log_level);
  28         }
  29
  30         return 0;
  31 }
  32
  33 static int do_log_format(struct cmd_tbl *cmdtp, int flag, int argc,
  34                          char *const argv[])
  35 {
  36         int i;
  37
  38         if (argc > 1) {
  39                 const char *str = argv[1];
  40
  41                 if (!strcmp(str, "default")) {
  42                         gd->log_fmt = log_get_default_format();
  43                 } else if (!strcmp(str, "all")) {
  44                         gd->log_fmt = LOGF_ALL;
  45                 } else {
  46                         gd->log_fmt = 0;
  47                         for (; *str; str++) {
  48                                 char *ptr = strchr(log_fmt_chars, *str);
  49
  50                                 if (!ptr) {
  51                                         printf("Invalid log char '%c'\n", *str);
  52                                         return CMD_RET_FAILURE;
  53                                 }
  54                                 gd->log_fmt |= 1 << (ptr - log_fmt_chars);
  55                         }
  56                 }
  57         } else {
  58                 printf("Log format: ");
  59                 for (i = 0; i < LOGF_COUNT; i++) {
  60                         if (gd->log_fmt & (1 << i))
  61                                 printf("%c", log_fmt_chars[i]);
  62                 }
  63                 printf("\n");
  64         }
  65
  66         return 0;
  67 }
  68
  69 static int do_log_rec(struct cmd_tbl *cmdtp, int flag, int argc,
  70                       char *const argv[])
  71 {
  72         enum log_category_t cat;
  73         enum log_level_t level;
  74         const char *file;
  75         uint line;
  76         const char *func;
  77         const char *msg;
  78         char *end;
  79
  80         if (argc < 7)
  81                 return CMD_RET_USAGE;
  82         cat = log_get_cat_by_name(argv[1]);
  83         level = simple_strtoul(argv[2], &end, 10);
  84         if (end == argv[2]) {
  85                 level = log_get_level_by_name(argv[2]);
  86
  87                 if (level == LOGL_NONE) {
  88                         printf("Invalid log level '%s'\n", argv[2]);
  89                         return CMD_RET_USAGE;
  90                 }
  91         }
  92         if (level >= LOGL_MAX) {
  93                 printf("Invalid log level %u\n", level);
  94                 return CMD_RET_USAGE;
  95         }
  96         file = argv[3];
  97         line = simple_strtoul(argv[4], NULL, 10);
  98         func = argv[5];
  99         msg = argv[6];
 100         if (_log(cat, level, file, line, func, "%s\n", msg))
 101                 return CMD_RET_FAILURE;
 102
 103         return 0;
 104 }
 105
 106 #ifdef CONFIG_SYS_LONGHELP
 107 static char log_help_text[] =
 108         "level - get/set log level\n"
 109         "log format <fmt> - set log output format. <fmt> is a string where\n"
 110         "\teach letter indicates something that should be displayed:\n"
 111         "\tc=category, l=level, F=file, L=line number, f=function, m=msg\n"
 112         "\tor 'default', or 'all' for all\n"
 113         "log rec <category> <level> <file> <line> <func> <message> - "
 114                 "output a log record"
 115         ;
 116 #endif
 117
 118 U_BOOT_CMD_WITH_SUBCMDS(log, "log system", log_help_text,
 119         U_BOOT_SUBCMD_MKENT(level, 2, 1, do_log_level),
 120         U_BOOT_SUBCMD_MKENT(format, 2, 1, do_log_format),
 121         U_BOOT_SUBCMD_MKENT(rec, 7, 1, do_log_rec),
 122 );