uboot/cmd/log.c
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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
   7#include <common.h>
   8#include <command.h>
   9#include <dm.h>
  10#include <log.h>
  11
  12static char log_fmt_chars[LOGF_COUNT] = "clFLfm";
  13
  14static 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
  25static 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
  61static 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
  97static 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
 106static 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
 125static 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
 139U_BOOT_CMD(
 140        log, CONFIG_SYS_MAXARGS, 1, do_log,
 141        "log system", log_help_text
 142);
 143