diff options
Diffstat (limited to 'package/boot/uboot-oxnas/files/arch/arm/cpu/arm1136/nas782x/timer.c')
-rw-r--r-- | package/boot/uboot-oxnas/files/arch/arm/cpu/arm1136/nas782x/timer.c | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/package/boot/uboot-oxnas/files/arch/arm/cpu/arm1136/nas782x/timer.c b/package/boot/uboot-oxnas/files/arch/arm/cpu/arm1136/nas782x/timer.c deleted file mode 100644 index 5e876080db..0000000000 --- a/package/boot/uboot-oxnas/files/arch/arm/cpu/arm1136/nas782x/timer.c +++ /dev/null @@ -1,129 +0,0 @@ -/* - * (C) Copyright 2004 - * Texas Instruments - * Richard Woodruff <r-woodruff2@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> - -#define TIMER_CLOCK (CONFIG_SYS_CLK_FREQ / (1 << (CONFIG_TIMER_PRESCALE * 4))) -#define TIMER_LOAD_VAL 0xFFFFFF - -/* macro to read the 32 bit timer */ -#define READ_TIMER (TIMER_LOAD_VAL - readl(CONFIG_SYS_TIMERBASE + TIMER_CURR)) \ - / (TIMER_CLOCK / CONFIG_SYS_HZ) - -#define READ_TIMER_HW (TIMER_LOAD_VAL - readl(CONFIG_SYS_TIMERBASE + TIMER_CURR)) - -DECLARE_GLOBAL_DATA_PTR; - -int timer_init (void) -{ - int32_t val; - - /* Start the counter ticking up */ - writel(TIMER_LOAD_VAL, CONFIG_SYS_TIMERBASE + TIMER_LOAD); /* reload value on overflow*/ - - val = (CONFIG_TIMER_PRESCALE << TIMER_PRESCALE_SHIFT) | - (TIMER_MODE_PERIODIC << TIMER_MODE_SHIFT) | - (TIMER_ENABLE << TIMER_ENABLE_SHIFT); /* mask to enable timer*/ - writel(val, CONFIG_SYS_TIMERBASE + TIMER_CTRL); /* start timer */ - - /* reset time */ - gd->arch.lastinc = READ_TIMER; /* capture current incrementer value */ - gd->arch.tbl = 0; /* start "advancing" time stamp */ - - return(0); -} -/* - * timer without interrupts - */ -ulong get_timer (ulong base) -{ - return get_timer_masked () - base; -} - -/* delay x useconds AND preserve advance timestamp value */ -void __udelay (unsigned long usec) -{ - ulong tmo, tmp; - - if (usec > 100000) { /* if "big" number, spread normalization to seconds */ - tmo = usec / 1000; /* start to normalize for usec to ticks per sec */ - tmo *= CONFIG_SYS_HZ; /* find number of "ticks" to wait to achieve target */ - tmo /= 1000; /* finish normalize. */ - - tmp = get_timer (0); /* get current timestamp */ - while (get_timer (tmp) < tmo)/* loop till event */ - /*NOP*/; - } else { /* else small number, convert to hw ticks */ - tmo = usec * (TIMER_CLOCK / 1000) / 1000; - /* timeout is no more than 0.1s, and the hw timer will roll over at most once */ - tmp = READ_TIMER_HW; - while (((READ_TIMER_HW -tmp) & TIMER_LOAD_VAL) < tmo)/* loop till event */ - /*NOP*/; - } -} - -ulong get_timer_masked (void) -{ - ulong now = READ_TIMER; /* current tick value */ - - if (now >= gd->arch.lastinc) { /* normal mode (non roll) */ - /* move stamp fordward with absoulte diff ticks */ - gd->arch.tbl += (now - gd->arch.lastinc); - } else { - /* we have rollover of incrementer */ - gd->arch.tbl += ((TIMER_LOAD_VAL / (TIMER_CLOCK / CONFIG_SYS_HZ)) - - gd->arch.lastinc) + now; - } - gd->arch.lastinc = now; - return gd->arch.tbl; -} - - -/* - * 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) -{ - ulong tbclk; - tbclk = CONFIG_SYS_HZ; - return tbclk; -} |