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6 * mailto:info@wawnet.biz
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 * S3C44B0 CPU specific code
33 #include <asm/hardware.h>
35 static void s3c44b0_flush_cache(void)
39 for(i=0x10002000;i<0x10004800;i+=16)
53 int cleanup_before_linux (void)
56 cache memory should be enabled before calling
57 Linux to make the kernel uncompression faster
61 disable_interrupts ();
66 void reset_cpu (ulong addr)
69 reset the cpu using watchdog
72 /* Disable the watchdog.*/
75 /* set the timeout value to a short time... */
78 /* Enable the watchdog. */
87 int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
89 disable_interrupts ();
96 void icache_enable (void)
100 s3c44b0_flush_cache();
104 Non-cacheable area (everything outside RAM)
105 0x0000:0000 - 0x0C00:0000
107 NCACHBE0 = 0xC0000000;
108 NCACHBE1 = 0x00000000;
114 reg |= 0x00000006; /* 8kB */
118 void icache_disable (void)
123 reg &= ~0x00000006; /* 8kB */
127 int icache_status (void)
132 void dcache_enable (void)
137 void dcache_disable (void)
142 int dcache_status (void)
144 return dcache_status();
152 #define BCD2HEX(n) ((n>>4)*10+(n&0x0f))
155 #define HEX2BCD(x) ((((x) / 10) << 4) + (x) % 10)
158 int rtc_get (struct rtc_time* tm)
161 tm->tm_year = BCD2HEX(BCDYEAR);
162 tm->tm_mon = BCD2HEX(BCDMON);
163 tm->tm_wday = BCD2HEX(BCDDATE);
164 tm->tm_mday = BCD2HEX(BCDDAY);
165 tm->tm_hour = BCD2HEX(BCDHOUR);
166 tm->tm_min = BCD2HEX(BCDMIN);
167 tm->tm_sec = BCD2HEX(BCDSEC);
170 /* we have to re-read the rtc data because of the "one second deviation" problem */
171 /* see RTC datasheet for more info about it */
172 tm->tm_year = BCD2HEX(BCDYEAR);
173 tm->tm_mon = BCD2HEX(BCDMON);
174 tm->tm_mday = BCD2HEX(BCDDAY);
175 tm->tm_wday = BCD2HEX(BCDDATE);
176 tm->tm_hour = BCD2HEX(BCDHOUR);
177 tm->tm_min = BCD2HEX(BCDMIN);
178 tm->tm_sec = BCD2HEX(BCDSEC);
183 if(tm->tm_year >= 70)
191 int rtc_set (struct rtc_time* tm)
193 if(tm->tm_year < 2000)
199 BCDYEAR = HEX2BCD(tm->tm_year);
200 BCDMON = HEX2BCD(tm->tm_mon);
201 BCDDAY = HEX2BCD(tm->tm_mday);
202 BCDDATE = HEX2BCD(tm->tm_wday);
203 BCDHOUR = HEX2BCD(tm->tm_hour);
204 BCDMIN = HEX2BCD(tm->tm_min);
205 BCDSEC = HEX2BCD(tm->tm_sec);
211 void rtc_reset (void)