+// SPDX-License-Identifier: GPL-2.0+
/*
* (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
*/
#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <timer.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
+}
+
+ulong timer_get_boot_us(void)
+{
+ ulong count = timer_read_counter();
+
+#if CONFIG_SYS_TIMER_RATE == 1000000
+ return count;
+#elif CONFIG_SYS_TIMER_RATE > 1000000
+ return lldiv(count, CONFIG_SYS_TIMER_RATE / 1000000);
+#elif defined(CONFIG_SYS_TIMER_RATE)
+ return (unsigned long long)count * 1000000 / CONFIG_SYS_TIMER_RATE;
+#else
+ /* Assume the counter is in microseconds */
+ return count;
+#endif
+}
+
+#else
+extern unsigned long __weak timer_read_counter(void);
+#endif
+
+#if CONFIG_IS_ENABLED(TIMER)
+ulong notrace get_tbclk(void)
+{
+ if (!gd->timer) {
+#ifdef CONFIG_TIMER_EARLY
+ return timer_early_get_rate();
+#else
+ int ret;
+
+ ret = dm_timer_init();
+ if (ret)
+ return ret;
+#endif
+ }
+
+ return timer_get_rate(gd->timer);
+}
+
+uint64_t notrace get_ticks(void)
+{
+ u64 count;
+ int ret;
+
+ if (!gd->timer) {
+#ifdef CONFIG_TIMER_EARLY
+ return timer_early_get_count();
+#else
+ int ret;
+
+ ret = dm_timer_init();
+ if (ret)
+ return ret;
+#endif
+ }
+
+ ret = timer_get_count(gd->timer, &count);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+#else /* !CONFIG_TIMER */
+
+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;
+}
+
+#endif /* CONFIG_TIMER */
+
+/* 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;
+}
+
+static uint64_t notrace tick_to_time_us(uint64_t tick)
+{
+ ulong div = get_tbclk() / 1000;
+
+ tick *= CONFIG_SYS_HZ;
+ do_div(tick, div);
+ return tick;
+}
+
+uint64_t __weak get_timer_us(uint64_t base)
+{
+ return tick_to_time_us(get_ticks()) - base;
+}
+
+unsigned long __weak notrace timer_get_us(void)
+{
+ return tick_to_time(get_ticks() * 1000);
+}
+
+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*/;
+}
+
/* ------------------------------------------------------------------------- */
void udelay(unsigned long usec)
usec -= kv;
} while(usec);
}
-
-void mdelay(unsigned long msec)
-{
- while (msec--)
- udelay(1000);
-}
-
-ulong __timer_get_boot_us(void)
-{
- static ulong base_time;
-
- /*
- * We can't implement this properly. Return 0 on the first call and
- * larger values after that.
- */
- if (base_time)
- return get_timer(base_time) * 1000;
- base_time = get_timer(0);
- return 0;
-}
-
-ulong timer_get_boot_us(void)
- __attribute__((weak, alias("__timer_get_boot_us")));
projects / oweals / u-boot.git / blobdiff