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author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2009-05-15 23:47:02 +0200 |
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committer | Wolfgang Denk <wd@denx.de> | 2009-06-12 20:39:48 +0200 |
commit | b54384e3ba6b5535751f317fcd3940a53eed0d3a (patch) | |
tree | 2a2027057af7b2bf1817d530b2ee33ca33e4d660 /cpu/arm920t/ks8695/interrupts.c | |
parent | 5b4bebe1d20c4f2b70d48b06aed1016785efcc25 (diff) | |
download | u-boot-imx-b54384e3ba6b5535751f317fcd3940a53eed0d3a.zip u-boot-imx-b54384e3ba6b5535751f317fcd3940a53eed0d3a.tar.gz u-boot-imx-b54384e3ba6b5535751f317fcd3940a53eed0d3a.tar.bz2 |
arm: timer and interrupt init rework
actually the timer init use the interrupt_init as init callback
which make the interrupt and timer implementation difficult to follow
so now rename it as int timer_init(void) and use interrupt_init for interrupt
btw also remane the corresponding file to the functionnality implemented
as ixp arch implement two timer - one based on interrupt - so all the timer
related code is moved to timer.c
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'cpu/arm920t/ks8695/interrupts.c')
-rw-r--r-- | cpu/arm920t/ks8695/interrupts.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/cpu/arm920t/ks8695/interrupts.c b/cpu/arm920t/ks8695/interrupts.c deleted file mode 100644 index 883d689..0000000 --- a/cpu/arm920t/ks8695/interrupts.c +++ /dev/null @@ -1,112 +0,0 @@ -/* - * (C) Copyright 2004-2005, Greg Ungerer <greg.ungerer@opengear.com> - * - * 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/arch/platform.h> - -/* - * Handy KS8695 register access functions. - */ -#define ks8695_read(a) *((volatile ulong *) (KS8695_IO_BASE + (a))) -#define ks8695_write(a,v) *((volatile ulong *) (KS8695_IO_BASE + (a))) = (v) - -int timer_inited; -ulong timer_ticks; - -int interrupt_init (void) -{ - /* nothing happens here - we don't setup any IRQs */ - return (0); -} - -/* - * Initial timer set constants. Nothing complicated, just set for a 1ms - * tick. - */ -#define TIMER_INTERVAL (TICKS_PER_uSEC * mSEC_1) -#define TIMER_COUNT (TIMER_INTERVAL / 2) -#define TIMER_PULSE TIMER_COUNT - -void reset_timer_masked(void) -{ - /* Set the hadware timer for 1ms */ - ks8695_write(KS8695_TIMER1, TIMER_COUNT); - ks8695_write(KS8695_TIMER1_PCOUNT, TIMER_PULSE); - ks8695_write(KS8695_TIMER_CTRL, 0x2); - timer_ticks = 0; - timer_inited++; -} - -void reset_timer(void) -{ - reset_timer_masked(); -} - -ulong get_timer_masked(void) -{ - /* Check for timer wrap */ - if (ks8695_read(KS8695_INT_STATUS) & KS8695_INTMASK_TIMERINT1) { - /* Clear interrupt condition */ - ks8695_write(KS8695_INT_STATUS, KS8695_INTMASK_TIMERINT1); - timer_ticks++; - } - return timer_ticks; -} - -ulong get_timer(ulong base) -{ - return (get_timer_masked() - base); -} - -void set_timer(ulong t) -{ - timer_ticks = t; -} - -void udelay(ulong usec) -{ - ulong start = get_timer_masked(); - ulong end; - - if (!timer_inited) - reset_timer(); - - /* Only 1ms resolution :-( */ - end = usec / 1000; - while (get_timer(start) < end) - ; -} - -void reset_cpu (ulong ignored) -{ - ulong tc; - - /* Set timer0 to watchdog, and let it timeout */ - tc = ks8695_read(KS8695_TIMER_CTRL) & 0x2; - ks8695_write(KS8695_TIMER_CTRL, tc); - ks8695_write(KS8695_TIMER0, ((10 << 8) | 0xff)); - ks8695_write(KS8695_TIMER_CTRL, (tc | 0x1)); - - /* Should only wait here till watchdog resets */ - for (;;) - ; -} |