* (C) Copyright 2000-2009
* Wolfgang Denk, DENX Software Engineering, wd@denx.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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <watchdog.h>
+#include <div64.h>
+#include <asm/io.h>
#ifndef CONFIG_WD_PERIOD
-# define CONFIG_WD_PERIOD (10 * 1000 * 1000) /* 10 seconds default*/
+# define CONFIG_WD_PERIOD (10 * 1000 * 1000) /* 10 seconds default */
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SYS_TIMER_RATE
+/* Returns tick rate in ticks per second */
+ulong notrace get_tbclk(void)
+{
+ return CONFIG_SYS_TIMER_RATE;
+}
+#endif
+
+#ifdef CONFIG_SYS_TIMER_COUNTER
+unsigned long notrace timer_read_counter(void)
+{
+#ifdef CONFIG_SYS_TIMER_COUNTS_DOWN
+ return ~readl(CONFIG_SYS_TIMER_COUNTER);
+#else
+ return readl(CONFIG_SYS_TIMER_COUNTER);
#endif
+}
+#else
+extern unsigned long __weak timer_read_counter(void);
+#endif
+
+uint64_t __weak notrace get_ticks(void)
+{
+ unsigned long now = timer_read_counter();
+
+ /* increment tbu if tbl has rolled over */
+ if (now < gd->timebase_l)
+ gd->timebase_h++;
+ gd->timebase_l = now;
+ return ((uint64_t)gd->timebase_h << 32) | gd->timebase_l;
+}
+
+/* Returns time in milliseconds */
+static uint64_t notrace tick_to_time(uint64_t tick)
+{
+ ulong div = get_tbclk();
+
+ tick *= CONFIG_SYS_HZ;
+ do_div(tick, div);
+ return tick;
+}
+
+int __weak timer_init(void)
+{
+ return 0;
+}
+
+/* Returns time in milliseconds */
+ulong __weak get_timer(ulong base)
+{
+ return tick_to_time(get_ticks()) - base;
+}
+
+unsigned long __weak notrace timer_get_us(void)
+{
+ return tick_to_time(get_ticks() * 1000);
+}
+
+static uint64_t usec_to_tick(unsigned long usec)
+{
+ uint64_t tick = usec;
+ tick *= get_tbclk();
+ do_div(tick, 1000000);
+ return tick;
+}
+
+void __weak __udelay(unsigned long usec)
+{
+ uint64_t tmp;
+
+ tmp = get_ticks() + usec_to_tick(usec); /* get current timestamp */
+
+ while (get_ticks() < tmp+1) /* loop till event */
+ /*NOP*/;
+}
/* ------------------------------------------------------------------------- */
usec -= kv;
} while(usec);
}
+
+void mdelay(unsigned long msec)
+{
+ while (msec--)
+ udelay(1000);
+}