--- /dev/null
+/*
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * RTC, Date & Time support: get and set date & time
+ */
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+#include <i2c.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const char * const weekdays[] = {
+ "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
+};
+
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+#define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off))
+#else
+#define RELOC(a) a
+#endif
+
+int mk_date (const char *, struct rtc_time *);
+
+static int do_date(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ struct rtc_time tm;
+ int rcode = 0;
+ int old_bus;
+
+ /* switch to correct I2C bus */
+#ifdef CONFIG_SYS_I2C
+ old_bus = i2c_get_bus_num();
+ i2c_set_bus_num(CONFIG_SYS_RTC_BUS_NUM);
+#else
+ old_bus = I2C_GET_BUS();
+ I2C_SET_BUS(CONFIG_SYS_RTC_BUS_NUM);
+#endif
+
+ switch (argc) {
+ case 2: /* set date & time */
+ if (strcmp(argv[1],"reset") == 0) {
+ puts ("Reset RTC...\n");
+ rtc_reset ();
+ } else {
+ /* initialize tm with current time */
+ rcode = rtc_get (&tm);
+
+ if(!rcode) {
+ /* insert new date & time */
+ if (mk_date (argv[1], &tm) != 0) {
+ puts ("## Bad date format\n");
+ break;
+ }
+ /* and write to RTC */
+ rcode = rtc_set (&tm);
+ if(rcode)
+ puts("## Set date failed\n");
+ } else {
+ puts("## Get date failed\n");
+ }
+ }
+ /* FALL TROUGH */
+ case 1: /* get date & time */
+ rcode = rtc_get (&tm);
+
+ if (rcode) {
+ puts("## Get date failed\n");
+ break;
+ }
+
+ printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n",
+ tm.tm_year, tm.tm_mon, tm.tm_mday,
+ (tm.tm_wday<0 || tm.tm_wday>6) ?
+ "unknown " : RELOC(weekdays[tm.tm_wday]),
+ tm.tm_hour, tm.tm_min, tm.tm_sec);
+
+ break;
+ default:
+ rcode = CMD_RET_USAGE;
+ }
+
+ /* switch back to original I2C bus */
+#ifdef CONFIG_SYS_I2C
+ i2c_set_bus_num(old_bus);
+#else
+ I2C_SET_BUS(old_bus);
+#endif
+
+ return rcode;
+}
+
+/*
+ * simple conversion of two-digit string with error checking
+ */
+static int cnvrt2 (const char *str, int *valp)
+{
+ int val;
+
+ if ((*str < '0') || (*str > '9'))
+ return (-1);
+
+ val = *str - '0';
+
+ ++str;
+
+ if ((*str < '0') || (*str > '9'))
+ return (-1);
+
+ *valp = 10 * val + (*str - '0');
+
+ return (0);
+}
+
+/*
+ * Convert date string: MMDDhhmm[[CC]YY][.ss]
+ *
+ * Some basic checking for valid values is done, but this will not catch
+ * all possible error conditions.
+ */
+int mk_date (const char *datestr, struct rtc_time *tmp)
+{
+ int len, val;
+ char *ptr;
+
+ ptr = strchr (datestr,'.');
+ len = strlen (datestr);
+
+ /* Set seconds */
+ if (ptr) {
+ int sec;
+
+ *ptr++ = '\0';
+ if ((len - (ptr - datestr)) != 2)
+ return (-1);
+
+ len = strlen (datestr);
+
+ if (cnvrt2 (ptr, &sec))
+ return (-1);
+
+ tmp->tm_sec = sec;
+ } else {
+ tmp->tm_sec = 0;
+ }
+
+ if (len == 12) { /* MMDDhhmmCCYY */
+ int year, century;
+
+ if (cnvrt2 (datestr+ 8, ¢ury) ||
+ cnvrt2 (datestr+10, &year) ) {
+ return (-1);
+ }
+ tmp->tm_year = 100 * century + year;
+ } else if (len == 10) { /* MMDDhhmmYY */
+ int year, century;
+
+ century = tmp->tm_year / 100;
+ if (cnvrt2 (datestr+ 8, &year))
+ return (-1);
+ tmp->tm_year = 100 * century + year;
+ }
+
+ switch (len) {
+ case 8: /* MMDDhhmm */
+ /* fall thru */
+ case 10: /* MMDDhhmmYY */
+ /* fall thru */
+ case 12: /* MMDDhhmmCCYY */
+ if (cnvrt2 (datestr+0, &val) ||
+ val > 12) {
+ break;
+ }
+ tmp->tm_mon = val;
+ if (cnvrt2 (datestr+2, &val) ||
+ val > ((tmp->tm_mon==2) ? 29 : 31)) {
+ break;
+ }
+ tmp->tm_mday = val;
+
+ if (cnvrt2 (datestr+4, &val) ||
+ val > 23) {
+ break;
+ }
+ tmp->tm_hour = val;
+
+ if (cnvrt2 (datestr+6, &val) ||
+ val > 59) {
+ break;
+ }
+ tmp->tm_min = val;
+
+ /* calculate day of week */
+ GregorianDay (tmp);
+
+ return (0);
+ default:
+ break;
+ }
+
+ return (-1);
+}
+
+/***************************************************/
+
+U_BOOT_CMD(
+ date, 2, 1, do_date,
+ "get/set/reset date & time",
+ "[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n"
+ " - without arguments: print date & time\n"
+ " - with numeric argument: set the system date & time\n"
+ " - with 'reset' argument: reset the RTC"
+);
Code Review / kvmfornfv.git / blobdiff