1 /* 2 * Copyright (c) 2017 Google, Inc 3 * Written by Simon Glass <sjg@chromium.org> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <command.h> 10 #include <dm.h> 11 #include <log.h> 12 13 static char log_fmt_chars[LOGF_COUNT] = "clFLfm"; 14 15 static int do_log_level(cmd_tbl_t *cmdtp, int flag, int argc, 16 char * const argv[]) 17 { 18 if (argc > 1) 19 gd->default_log_level = simple_strtol(argv[1], NULL, 10); 20 else 21 printf("Default log level: %d\n", gd->default_log_level); 22 23 return 0; 24 } 25 26 static int do_log_format(cmd_tbl_t *cmdtp, int flag, int argc, 27 char * const argv[]) 28 { 29 int i; 30 31 if (argc > 1) { 32 const char *str = argv[1]; 33 34 if (!strcmp(str, "default")) { 35 gd->log_fmt = LOGF_DEFAULT; 36 } else if (!strcmp(str, "all")) { 37 gd->log_fmt = LOGF_ALL; 38 } else { 39 gd->log_fmt = 0; 40 for (; *str; str++) { 41 char *ptr = strchr(log_fmt_chars, *str); 42 43 if (!ptr) { 44 printf("Invalid log char '%c'\n", *str); 45 return CMD_RET_FAILURE; 46 } 47 gd->log_fmt |= 1 << (ptr - log_fmt_chars); 48 } 49 } 50 } else { 51 printf("Log format: "); 52 for (i = 0; i < LOGF_COUNT; i++) { 53 if (gd->log_fmt & (1 << i)) 54 printf("%c", log_fmt_chars[i]); 55 } 56 printf("\n"); 57 } 58 59 return 0; 60 } 61 62 static int do_log_rec(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 63 { 64 enum log_category_t cat; 65 enum log_level_t level; 66 const char *file; 67 uint line; 68 const char *func; 69 const char *msg; 70 char *end; 71 72 if (argc < 7) 73 return CMD_RET_USAGE; 74 cat = log_get_cat_by_name(argv[1]); 75 level = simple_strtoul(argv[2], &end, 10); 76 if (end == argv[2]) { 77 level = log_get_level_by_name(argv[2]); 78 79 if (level == LOGL_NONE) { 80 printf("Invalid log level '%s'\n", argv[2]); 81 return CMD_RET_USAGE; 82 } 83 } 84 if (level >= LOGL_MAX) { 85 printf("Invalid log level %u\n", level); 86 return CMD_RET_USAGE; 87 } 88 file = argv[3]; 89 line = simple_strtoul(argv[4], NULL, 10); 90 func = argv[5]; 91 msg = argv[6]; 92 if (_log(cat, level, file, line, func, "%s\n", msg)) 93 return CMD_RET_FAILURE; 94 95 return 0; 96 } 97 98 static cmd_tbl_t log_sub[] = { 99 U_BOOT_CMD_MKENT(level, CONFIG_SYS_MAXARGS, 1, do_log_level, "", ""), 100 #ifdef CONFIG_LOG_TEST 101 U_BOOT_CMD_MKENT(test, 2, 1, do_log_test, "", ""), 102 #endif 103 U_BOOT_CMD_MKENT(format, CONFIG_SYS_MAXARGS, 1, do_log_format, "", ""), 104 U_BOOT_CMD_MKENT(rec, CONFIG_SYS_MAXARGS, 1, do_log_rec, "", ""), 105 }; 106 107 static int do_log(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 108 { 109 cmd_tbl_t *cp; 110 111 if (argc < 2) 112 return CMD_RET_USAGE; 113 114 /* drop initial "log" arg */ 115 argc--; 116 argv++; 117 118 cp = find_cmd_tbl(argv[0], log_sub, ARRAY_SIZE(log_sub)); 119 if (cp) 120 return cp->cmd(cmdtp, flag, argc, argv); 121 122 return CMD_RET_USAGE; 123 } 124 125 #ifdef CONFIG_SYS_LONGHELP 126 static char log_help_text[] = 127 "level - get/set log level\n" 128 #ifdef CONFIG_LOG_TEST 129 "log test - run log tests\n" 130 #endif 131 "log format <fmt> - set log output format. <fmt> is a string where\n" 132 "\teach letter indicates something that should be displayed:\n" 133 "\tc=category, l=level, F=file, L=line number, f=function, m=msg\n" 134 "\tor 'default', equivalent to 'fm', or 'all' for all\n" 135 "log rec <category> <level> <file> <line> <func> <message> - " 136 "output a log record" 137 ; 138 #endif 139 140 U_BOOT_CMD( 141 log, CONFIG_SYS_MAXARGS, 1, do_log, 142 "log system", log_help_text 143 ); 144