summaryrefslogtreecommitdiffstats
path: root/cpu/arm_cortexa8/omap3/timer.c
diff options
context:
space:
mode:
Diffstat (limited to 'cpu/arm_cortexa8/omap3/timer.c')
-rw-r--r--cpu/arm_cortexa8/omap3/timer.c138
1 files changed, 0 insertions, 138 deletions
diff --git a/cpu/arm_cortexa8/omap3/timer.c b/cpu/arm_cortexa8/omap3/timer.c
deleted file mode 100644
index 401bfe6d09..0000000000
--- a/cpu/arm_cortexa8/omap3/timer.c
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * (C) Copyright 2008
- * Texas Instruments
- *
- * Richard Woodruff <r-woodruff2@ti.com>
- * Syed Moahmmed Khasim <khasim@ti.com>
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- * Alex Zuepke <azu@sysgo.de>
- *
- * (C) Copyright 2002
- * Gary Jennejohn, DENX Software Engineering, <garyj@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 <asm/io.h>
-
-static ulong timestamp;
-static ulong lastinc;
-static struct gptimer *timer_base = (struct gptimer *)CONFIG_SYS_TIMERBASE;
-
-/*
- * Nothing really to do with interrupts, just starts up a counter.
- * We run the counter with 13MHz, divided by 8, resulting in timer
- * frequency of 1.625MHz. With 32bit counter register, counter
- * overflows in ~44min
- */
-
-/* 13MHz / 8 = 1.625MHz */
-#define TIMER_CLOCK (V_SCLK / (2 << CONFIG_SYS_PTV))
-#define TIMER_LOAD_VAL 0xffffffff
-
-int timer_init(void)
-{
- /* start the counter ticking up, reload value on overflow */
- writel(TIMER_LOAD_VAL, &timer_base->tldr);
- /* enable timer */
- writel((CONFIG_SYS_PTV << 2) | TCLR_PRE | TCLR_AR | TCLR_ST,
- &timer_base->tclr);
-
- reset_timer_masked(); /* init the timestamp and lastinc value */
-
- return 0;
-}
-
-/*
- * timer without interrupts
- */
-void reset_timer(void)
-{
- reset_timer_masked();
-}
-
-ulong get_timer(ulong base)
-{
- return get_timer_masked() - base;
-}
-
-void set_timer(ulong t)
-{
- timestamp = t;
-}
-
-/* delay x useconds */
-void __udelay(unsigned long usec)
-{
- long tmo = usec * (TIMER_CLOCK / 1000) / 1000;
- unsigned long now, last = readl(&timer_base->tcrr);
-
- while (tmo > 0) {
- now = readl(&timer_base->tcrr);
- if (last > now) /* count up timer overflow */
- tmo -= TIMER_LOAD_VAL - last + now;
- else
- tmo -= now - last;
- last = now;
- }
-}
-
-void reset_timer_masked(void)
-{
- /* reset time, capture current incrementer value time */
- lastinc = readl(&timer_base->tcrr) / (TIMER_CLOCK / CONFIG_SYS_HZ);
- timestamp = 0; /* start "advancing" time stamp from 0 */
-}
-
-ulong get_timer_masked(void)
-{
- /* current tick value */
- ulong now = readl(&timer_base->tcrr) / (TIMER_CLOCK / CONFIG_SYS_HZ);
-
- if (now >= lastinc) /* normal mode (non roll) */
- /* move stamp fordward with absoulte diff ticks */
- timestamp += (now - lastinc);
- else /* we have rollover of incrementer */
- timestamp += ((TIMER_LOAD_VAL / (TIMER_CLOCK / CONFIG_SYS_HZ))
- - lastinc) + now;
- lastinc = now;
- return timestamp;
-}
-
-/*
- * This function is derived from PowerPC code (read timebase as long long).
- * On ARM it just returns the timer value.
- */
-unsigned long long get_ticks(void)
-{
- return get_timer(0);
-}
-
-/*
- * This function is derived from PowerPC code (timebase clock frequency).
- * On ARM it returns the number of timer ticks per second.
- */
-ulong get_tbclk(void)
-{
- return CONFIG_SYS_HZ;
-}
OpenPOWER on IntegriCloud