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11#undef RTC_DEBUG
12
13#include <common.h>
14#include <command.h>
15#include <config.h>
16#include <rtc.h>
17#include <mk48t59.h>
18
19#if defined(CONFIG_BAB7xx)
20
21static uchar rtc_read (short reg)
22{
23 out8(RTC_PORT_ADDR0, reg & 0xFF);
24 out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF);
25 return in8(RTC_PORT_DATA);
26}
27
28static void rtc_write (short reg, uchar val)
29{
30 out8(RTC_PORT_ADDR0, reg & 0xFF);
31 out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF);
32 out8(RTC_PORT_DATA, val);
33}
34
35#elif defined(CONFIG_EVAL5200)
36
37static uchar rtc_read (short reg)
38{
39 return in8(RTC(reg));
40}
41
42static void rtc_write (short reg, uchar val)
43{
44 out8(RTC(reg),val);
45}
46
47#else
48# error Board specific rtc access functions should be supplied
49#endif
50
51
52
53void *nvram_read(void *dest, const short src, size_t count)
54{
55 uchar *d = (uchar *) dest;
56 short s = src;
57
58 while (count--)
59 *d++ = rtc_read(s++);
60
61 return dest;
62}
63
64void nvram_write(short dest, const void *src, size_t count)
65{
66 short d = dest;
67 uchar *s = (uchar *) src;
68
69 while (count--)
70 rtc_write(d++, *s++);
71}
72
73#if defined(CONFIG_CMD_DATE)
74
75
76
77int rtc_get (struct rtc_time *tmp)
78{
79 uchar save_ctrl_a;
80 uchar sec, min, hour, mday, wday, mon, year;
81
82
83 save_ctrl_a = rtc_read(RTC_CONTROLA);
84
85
86 save_ctrl_a |= RTC_CA_READ;
87 rtc_write(RTC_CONTROLA, save_ctrl_a);
88
89 sec = rtc_read (RTC_SECONDS);
90 min = rtc_read (RTC_MINUTES);
91 hour = rtc_read (RTC_HOURS);
92 mday = rtc_read (RTC_DAY_OF_MONTH);
93 wday = rtc_read (RTC_DAY_OF_WEEK);
94 mon = rtc_read (RTC_MONTH);
95 year = rtc_read (RTC_YEAR);
96
97
98 save_ctrl_a &= ~RTC_CA_READ;
99 rtc_write(RTC_CONTROLA, save_ctrl_a);
100
101#ifdef RTC_DEBUG
102 printf ( "Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
103 "hr: %02x min: %02x sec: %02x\n",
104 year, mon, mday, wday,
105 hour, min, sec );
106#endif
107 tmp->tm_sec = bcd2bin (sec & 0x7F);
108 tmp->tm_min = bcd2bin (min & 0x7F);
109 tmp->tm_hour = bcd2bin (hour & 0x3F);
110 tmp->tm_mday = bcd2bin (mday & 0x3F);
111 tmp->tm_mon = bcd2bin (mon & 0x1F);
112 tmp->tm_year = bcd2bin (year);
113 tmp->tm_wday = bcd2bin (wday & 0x07);
114 if(tmp->tm_year<70)
115 tmp->tm_year+=2000;
116 else
117 tmp->tm_year+=1900;
118 tmp->tm_yday = 0;
119 tmp->tm_isdst= 0;
120#ifdef RTC_DEBUG
121 printf ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
122 tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
123 tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
124#endif
125
126 return 0;
127}
128
129int rtc_set (struct rtc_time *tmp)
130{
131 uchar save_ctrl_a;
132
133#ifdef RTC_DEBUG
134 printf ( "Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
135 tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
136 tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
137#endif
138 save_ctrl_a = rtc_read(RTC_CONTROLA);
139
140 save_ctrl_a |= RTC_CA_WRITE;
141 rtc_write(RTC_CONTROLA, save_ctrl_a);
142
143 rtc_write (RTC_YEAR, bin2bcd(tmp->tm_year % 100));
144 rtc_write (RTC_MONTH, bin2bcd(tmp->tm_mon));
145
146 rtc_write (RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday));
147 rtc_write (RTC_DAY_OF_MONTH, bin2bcd(tmp->tm_mday));
148 rtc_write (RTC_HOURS, bin2bcd(tmp->tm_hour));
149 rtc_write (RTC_MINUTES, bin2bcd(tmp->tm_min ));
150 rtc_write (RTC_SECONDS, bin2bcd(tmp->tm_sec ));
151
152 save_ctrl_a &= ~RTC_CA_WRITE;
153 rtc_write(RTC_CONTROLA, save_ctrl_a);
154
155 return 0;
156}
157
158void rtc_reset (void)
159{
160 uchar control_b;
161
162
163
164
165 control_b = rtc_read(RTC_CONTROLB);
166
167 control_b &= ~RTC_CB_STOP;
168 rtc_write(RTC_CONTROLB, control_b);
169}
170
171void rtc_set_watchdog(short multi, short res)
172{
173 uchar wd_value;
174
175 wd_value = RTC_WDS | ((multi & 0x1F) << 2) | (res & 0x3);
176 rtc_write(RTC_WATCHDOG, wd_value);
177}
178
179#endif
180