log.c 3.2 KB

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