1 // SPDX-License-Identifier: GPL-2.0+
8  * RTC, Date & Time support: get and set date & time
23 #define RELOC(a)	((typeof(a))((unsigned long)(a) + gd->reloc_off))
56 	case 2:			/* set date & time */  in do_date()
57 		if (strcmp(argv[1],"reset") == 0) {  in do_date()
58 			puts ("Reset RTC...\n");  in do_date()
68 				puts("## Failed to set date after RTC reset\n");  in do_date()
70 			/* initialize tm with current time */  in do_date()
77 				/* insert new date & time */  in do_date()
97 	case 1:			/* get date & time */  in do_date()
108 		printf ("Date: %4d-%02d-%02d (%sday)    Time: %2d:%02d:%02d\n",  in do_date()
130  * simple conversion of two-digit string with error checking
137 		return (-1);  in cnvrt2()
139 	val = *str - '0';  in cnvrt2()
144 		return (-1);  in cnvrt2()
146 	*valp = 10 * val + (*str - '0');  in cnvrt2()
167 		int sec;  in mk_date()  local
170 		if ((len - (ptr - datestr)) != 2)  in mk_date()
171 			return (-1);  in mk_date()
173 		len -= 3;  in mk_date()
175 		if (cnvrt2 (ptr, &sec))  in mk_date()
176 			return (-1);  in mk_date()
178 		tmp->tm_sec = sec;  in mk_date()
180 		tmp->tm_sec = 0;  in mk_date()
188 			return (-1);  in mk_date()
190 		tmp->tm_year = 100 * century + year;  in mk_date()
194 		century = tmp->tm_year / 100;  in mk_date()
196 			return (-1);  in mk_date()
197 		tmp->tm_year = 100 * century + year;  in mk_date()
210 		tmp->tm_mon  = val;  in mk_date()
212 		    val > ((tmp->tm_mon==2) ? 29 : 31)) {  in mk_date()
215 		tmp->tm_mday = val;  in mk_date()
221 		tmp->tm_hour = val;  in mk_date()
227 		tmp->tm_min  = val;  in mk_date()
237 	return (-1);  in mk_date()
244 	"get/set/reset date & time",
245 	"[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n"
246 	"  - without arguments: print date & time\n"
247 	"  - with numeric argument: set the system date & time\n"
248 	"  - with 'reset' argument: reset the RTC"