1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/*
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Andreas Heppel <aheppel@sysgo.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* Date & Time support for the MK48T59 RTC
*/
#undef RTC_DEBUG
#include <common.h>
#include <command.h>
#include <config.h>
#include <rtc.h>
#include <mk48t59.h>
#if defined(CONFIG_RTC_MK48T59)
#if defined(CONFIG_BAB7xx)
static uchar rtc_read (short reg)
{
out8(RTC_PORT_ADDR0, reg & 0xFF);
out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF);
return in8(RTC_PORT_DATA);
}
static void rtc_write (short reg, uchar val)
{
out8(RTC_PORT_ADDR0, reg & 0xFF);
out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF);
out8(RTC_PORT_DATA, val);
}
#elif defined(CONFIG_PCIPPC2)
#include "../board/pcippc2/pcippc2.h"
static uchar rtc_read (short reg)
{
return in8(RTC(reg));
}
static void rtc_write (short reg, uchar val)
{
out8(RTC(reg),val);
}
#elif defined(CONFIG_AMIGAONEG3SE)
#include "../board/MAI/AmigaOneG3SE/via686.h"
#include "../board/MAI/AmigaOneG3SE/memio.h"
static uchar rtc_read (short reg)
{
out_byte(CMOS_ADDR, (uint8)reg);
return in_byte(CMOS_DATA);
}
static void rtc_write (short reg, uchar val)
{
out_byte(CMOS_ADDR, (uint8)reg);
out_byte(CMOS_DATA, (uint8)val);
}
#elif defined(CONFIG_EVAL5200)
static uchar rtc_read (short reg)
{
return in8(RTC(reg));
}
static void rtc_write (short reg, uchar val)
{
out8(RTC(reg),val);
}
#else
# error Board specific rtc access functions should be supplied
#endif
static unsigned bcd2bin (uchar n)
{
return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
}
static unsigned char bin2bcd (unsigned int n)
{
return (((n / 10) << 4) | (n % 10));
}
/* ------------------------------------------------------------------------- */
void *nvram_read(void *dest, const short src, size_t count)
{
uchar *d = (uchar *) dest;
short s = src;
while (count--)
*d++ = rtc_read(s++);
return dest;
}
void nvram_write(short dest, const void *src, size_t count)
{
short d = dest;
uchar *s = (uchar *) src;
while (count--)
rtc_write(d++, *s++);
}
#if (CONFIG_COMMANDS & CFG_CMD_DATE)
/* ------------------------------------------------------------------------- */
void rtc_get (struct rtc_time *tmp)
{
uchar save_ctrl_a;
uchar sec, min, hour, mday, wday, mon, year;
/* Simple: freeze the clock, read it and allow updates again */
save_ctrl_a = rtc_read(RTC_CONTROLA);
/* Set the register to read the value. */
save_ctrl_a |= RTC_CA_READ;
rtc_write(RTC_CONTROLA, save_ctrl_a);
sec = rtc_read (RTC_SECONDS);
min = rtc_read (RTC_MINUTES);
hour = rtc_read (RTC_HOURS);
mday = rtc_read (RTC_DAY_OF_MONTH);
wday = rtc_read (RTC_DAY_OF_WEEK);
mon = rtc_read (RTC_MONTH);
year = rtc_read (RTC_YEAR);
/* re-enable update */
save_ctrl_a &= ~RTC_CA_READ;
rtc_write(RTC_CONTROLA, save_ctrl_a);
#ifdef RTC_DEBUG
printf ( "Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
"hr: %02x min: %02x sec: %02x\n",
year, mon, mday, wday,
hour, min, sec );
#endif
tmp->tm_sec = bcd2bin (sec & 0x7F);
tmp->tm_min = bcd2bin (min & 0x7F);
tmp->tm_hour = bcd2bin (hour & 0x3F);
tmp->tm_mday = bcd2bin (mday & 0x3F);
tmp->tm_mon = bcd2bin (mon & 0x1F);
tmp->tm_year = bcd2bin (year);
tmp->tm_wday = bcd2bin (wday & 0x07);
if(tmp->tm_year<70)
tmp->tm_year+=2000;
else
tmp->tm_year+=1900;
tmp->tm_yday = 0;
tmp->tm_isdst= 0;
#ifdef RTC_DEBUG
printf ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif
}
void rtc_set (struct rtc_time *tmp)
{
uchar save_ctrl_a;
#ifdef RTC_DEBUG
printf ( "Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
#endif
save_ctrl_a = rtc_read(RTC_CONTROLA);
save_ctrl_a |= RTC_CA_WRITE;
rtc_write(RTC_CONTROLA, save_ctrl_a); /* disables the RTC to update the regs */
rtc_write (RTC_YEAR, bin2bcd(tmp->tm_year % 100));
rtc_write (RTC_MONTH, bin2bcd(tmp->tm_mon));
rtc_write (RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday));
rtc_write (RTC_DAY_OF_MONTH, bin2bcd(tmp->tm_mday));
rtc_write (RTC_HOURS, bin2bcd(tmp->tm_hour));
rtc_write (RTC_MINUTES, bin2bcd(tmp->tm_min ));
rtc_write (RTC_SECONDS, bin2bcd(tmp->tm_sec ));
save_ctrl_a &= ~RTC_CA_WRITE;
rtc_write(RTC_CONTROLA, save_ctrl_a); /* enables the RTC to update the regs */
}
void rtc_reset (void)
{
uchar control_b;
/*
* Start oscillator here.
*/
control_b = rtc_read(RTC_CONTROLB);
control_b &= ~RTC_CB_STOP;
rtc_write(RTC_CONTROLB, control_b);
}
void rtc_set_watchdog(short multi, short res)
{
uchar wd_value;
wd_value = RTC_WDS | ((multi & 0x1F) << 2) | (res & 0x3);
rtc_write(RTC_WATCHDOG, wd_value);
}
#endif /* (CONFIG_COMMANDS & CFG_CMD_DATE) */
#endif /* CONFIG_RTC_MK48T59 */
|
