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-rw-r--r--arch/arm/cpu/arm1176/s3c64xx/timer.c160
1 files changed, 0 insertions, 160 deletions
diff --git a/arch/arm/cpu/arm1176/s3c64xx/timer.c b/arch/arm/cpu/arm1176/s3c64xx/timer.c
deleted file mode 100644
index f16a37b53c..0000000000
--- a/arch/arm/cpu/arm1176/s3c64xx/timer.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * (C) Copyright 2003
- * Texas Instruments <www.ti.com>
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Alex Zuepke <azu@sysgo.de>
- *
- * (C) Copyright 2002-2004
- * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
- *
- * (C) Copyright 2004
- * Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
- *
- * (C) Copyright 2008
- * Guennadi Liakhovetki, DENX Software Engineering, <lg@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/proc-armv/ptrace.h>
-#include <asm/arch/s3c6400.h>
-#include <div64.h>
-
-static ulong timer_load_val;
-
-#define PRESCALER 167
-
-static s3c64xx_timers *s3c64xx_get_base_timers(void)
-{
- return (s3c64xx_timers *)ELFIN_TIMER_BASE;
-}
-
-/* macro to read the 16 bit timer */
-static inline ulong read_timer(void)
-{
- s3c64xx_timers *const timers = s3c64xx_get_base_timers();
-
- return timers->TCNTO4;
-}
-
-/* Internal tick units */
-/* Last decremneter snapshot */
-static unsigned long lastdec;
-/* Monotonic incrementing timer */
-static unsigned long long timestamp;
-
-int timer_init(void)
-{
- s3c64xx_timers *const timers = s3c64xx_get_base_timers();
-
- /* use PWM Timer 4 because it has no output */
- /*
- * We use the following scheme for the timer:
- * Prescaler is hard fixed at 167, divider at 1/4.
- * This gives at PCLK frequency 66MHz approx. 10us ticks
- * The timer is set to wrap after 100s, at 66MHz this obviously
- * happens after 10,000,000 ticks. A long variable can thus
- * keep values up to 40,000s, i.e., 11 hours. This should be
- * enough for most uses:-) Possible optimizations: select a
- * binary-friendly frequency, e.g., 1ms / 128. Also calculate
- * the prescaler automatically for other PCLK frequencies.
- */
- timers->TCFG0 = PRESCALER << 8;
- if (timer_load_val == 0) {
- timer_load_val = get_PCLK() / PRESCALER * (100 / 4); /* 100s */
- timers->TCFG1 = (timers->TCFG1 & ~0xf0000) | 0x20000;
- }
-
- /* load value for 10 ms timeout */
- lastdec = timers->TCNTB4 = timer_load_val;
- /* auto load, manual update of Timer 4 */
- timers->TCON = (timers->TCON & ~0x00700000) | TCON_4_AUTO |
- TCON_4_UPDATE;
-
- /* auto load, start Timer 4 */
- timers->TCON = (timers->TCON & ~0x00700000) | TCON_4_AUTO | COUNT_4_ON;
- timestamp = 0;
-
- return 0;
-}
-
-/*
- * timer without interrupts
- */
-
-/*
- * 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)
-{
- ulong now = read_timer();
-
- if (lastdec >= now) {
- /* normal mode */
- timestamp += lastdec - now;
- } else {
- /* we have an overflow ... */
- timestamp += lastdec + timer_load_val - now;
- }
- lastdec = now;
-
- return timestamp;
-}
-
-/*
- * 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)
-{
- /* We overrun in 100s */
- return (ulong)(timer_load_val / 100);
-}
-
-ulong get_timer_masked(void)
-{
- unsigned long long res = get_ticks();
- do_div (res, (timer_load_val / (100 * CONFIG_SYS_HZ)));
- return res;
-}
-
-ulong get_timer(ulong base)
-{
- return get_timer_masked() - base;
-}
-
-void __udelay(unsigned long usec)
-{
- unsigned long long tmp;
- ulong tmo;
-
- tmo = (usec + 9) / 10;
- tmp = get_ticks() + tmo; /* get current timestamp */
-
- while (get_ticks() < tmp)/* loop till event */
- /*NOP*/;
-}
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