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 ); 143