mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
102 lines
1.9 KiB
C
102 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Alex Zuepke <azu@sysgo.de>
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*
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* (C) Copyright 2002
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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
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*/
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#include <common.h>
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#if defined (CONFIG_IMX)
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#include <asm/arch/imx-regs.h>
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int timer_init (void)
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{
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int i;
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/* setup GP Timer 1 */
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TCTL1 = TCTL_SWR;
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for ( i=0; i<100; i++) TCTL1 = 0; /* We have no udelay by now */
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TPRER1 = get_PERCLK1() / 1000000; /* 1 MHz */
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TCTL1 |= TCTL_FRR | (1<<1); /* Freerun Mode, PERCLK1 input */
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/* Reset the timer */
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TCTL1 &= ~TCTL_TEN;
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TCTL1 |= TCTL_TEN; /* Enable timer */
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return (0);
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}
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/*
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* timer without interrupts
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*/
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ulong get_timer (ulong base)
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{
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return get_timer_masked() - base;
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}
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ulong get_timer_masked (void)
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{
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return TCN1;
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}
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void udelay_masked (unsigned long usec)
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{
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ulong endtime = get_timer_masked() + usec;
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signed long diff;
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do {
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ulong now = get_timer_masked ();
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diff = endtime - now;
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} while (diff >= 0);
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}
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void __udelay (unsigned long usec)
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{
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udelay_masked(usec);
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}
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/*
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* This function is derived from PowerPC code (read timebase as long long).
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* On ARM it just returns the timer value.
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*/
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unsigned long long get_ticks(void)
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{
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return get_timer(0);
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}
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/*
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* This function is derived from PowerPC code (timebase clock frequency).
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* On ARM it returns the number of timer ticks per second.
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*/
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ulong get_tbclk (void)
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{
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return CONFIG_SYS_HZ;
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}
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/*
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* Reset the cpu by setting up the watchdog timer and let him time out
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*/
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void reset_cpu (ulong ignored)
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{
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/* Disable watchdog and set Time-Out field to 0 */
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WCR = 0x00000000;
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/* Write Service Sequence */
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WSR = 0x00005555;
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WSR = 0x0000AAAA;
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/* Enable watchdog */
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WCR = 0x00000001;
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while (1);
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/*NOTREACHED*/
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}
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#endif /* defined (CONFIG_IMX) */
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