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(cmd_tbl_t *cmdtp, int flag, int argc,
  15                         char * const argv[])
  16 {
  17         if (argc > 1)
  18                 gd->default_log_level = simple_strtol(argv[1], NULL, 10);
  19         else
  20                 printf("Default log level: %d\n", gd->default_log_level);
  21
  22         return 0;
  23 }
  24
  25 static int do_log_format(cmd_tbl_t *cmdtp, int flag, int argc,
  26                          char * const argv[])
  27 {
  28         int i;
  29
  30         if (argc > 1) {
  31                 const char *str = argv[1];
  32
  33                 if (!strcmp(str, "default")) {
  34                         gd->log_fmt = LOGF_DEFAULT;
  35                 } else if (!strcmp(str, "all")) {
  36                         gd->log_fmt = LOGF_ALL;
  37                 } else {
  38                         gd->log_fmt = 0;
  39                         for (; *str; str++) {
  40                                 char *ptr = strchr(log_fmt_chars, *str);
  41
  42                                 if (!ptr) {
  43                                         printf("Invalid log char '%c'\n", *str);
  44                                         return CMD_RET_FAILURE;
  45                                 }
  46                                 gd->log_fmt |= 1 << (ptr - log_fmt_chars);
  47                         }
  48                 }
  49         } else {
  50                 printf("Log format: ");
  51                 for (i = 0; i < LOGF_COUNT; i++) {
  52                         if (gd->log_fmt & (1 << i))
  53                                 printf("%c", log_fmt_chars[i]);
  54                 }
  55                 printf("\n");
  56         }
  57
  58         return 0;
  59 }
  60
  61 static int do_log_rec(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  62 {
  63         enum log_category_t cat;
  64         enum log_level_t level;
  65         const char *file;
  66         uint line;
  67         const char *func;
  68         const char *msg;
  69         char *end;
  70
  71         if (argc < 7)
  72                 return CMD_RET_USAGE;
  73         cat = log_get_cat_by_name(argv[1]);
  74         level = simple_strtoul(argv[2], &end, 10);
  75         if (end == argv[2]) {
  76                 level = log_get_level_by_name(argv[2]);
  77
  78                 if (level == LOGL_NONE) {
  79                         printf("Invalid log level '%s'\n", argv[2]);
  80                         return CMD_RET_USAGE;
  81                 }
  82         }
  83         if (level >= LOGL_MAX) {
  84                 printf("Invalid log level %u\n", level);
  85                 return CMD_RET_USAGE;
  86         }
  87         file = argv[3];
  88         line = simple_strtoul(argv[4], NULL, 10);
  89         func = argv[5];
  90         msg = argv[6];
  91         if (_log(cat, level, file, line, func, "%s\n", msg))
  92                 return CMD_RET_FAILURE;
  93
  94         return 0;
  95 }
  96
  97 static cmd_tbl_t log_sub[] = {
  98         U_BOOT_CMD_MKENT(level, CONFIG_SYS_MAXARGS, 1, do_log_level, "", ""),
  99 #ifdef CONFIG_LOG_TEST
 100         U_BOOT_CMD_MKENT(test, 2, 1, do_log_test, "", ""),
 101 #endif
 102         U_BOOT_CMD_MKENT(format, CONFIG_SYS_MAXARGS, 1, do_log_format, "", ""),
 103         U_BOOT_CMD_MKENT(rec, CONFIG_SYS_MAXARGS, 1, do_log_rec, "", ""),
 104 };
 105
 106 static int do_log(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 107 {
 108         cmd_tbl_t *cp;
 109
 110         if (argc < 2)
 111                 return CMD_RET_USAGE;
 112
 113         /* drop initial "log" arg */
 114         argc--;
 115         argv++;
 116
 117         cp = find_cmd_tbl(argv[0], log_sub, ARRAY_SIZE(log_sub));
 118         if (cp)
 119                 return cp->cmd(cmdtp, flag, argc, argv);
 120
 121         return CMD_RET_USAGE;
 122 }
 123
 124 #ifdef CONFIG_SYS_LONGHELP
 125 static char log_help_text[] =
 126         "level - get/set log level\n"
 127 #ifdef CONFIG_LOG_TEST
 128         "log test - run log tests\n"
 129 #endif
 130         "log format <fmt> - set log output format. <fmt> is a string where\n"
 131         "\teach letter indicates something that should be displayed:\n"
 132         "\tc=category, l=level, F=file, L=line number, f=function, m=msg\n"
 133         "\tor 'default', equivalent to 'fm', or 'all' for all\n"
 134         "log rec <category> <level> <file> <line> <func> <message> - "
 135                 "output a log record"
 136         ;
 137 #endif
 138
 139 U_BOOT_CMD(
 140         log, CONFIG_SYS_MAXARGS, 1, do_log,
 141         "log system", log_help_text
 142 );