mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-10 21:26:19 +09:00
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>
105 lines
2.0 KiB
C
105 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2000-2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2003
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* Gleb Natapov <gnatapov@mrv.com>
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*/
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#include <common.h>
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#include <asm/processor.h>
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#include <watchdog.h>
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#ifdef CONFIG_LED_STATUS
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#include <status_led.h>
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#endif
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#ifdef CONFIG_SHOW_ACTIVITY
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void board_show_activity (ulong) __attribute__((weak, alias("__board_show_activity")));
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void __board_show_activity (ulong dummy)
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{
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return;
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}
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#endif /* CONFIG_SHOW_ACTIVITY */
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#ifndef CONFIG_SYS_WATCHDOG_FREQ
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#define CONFIG_SYS_WATCHDOG_FREQ (CONFIG_SYS_HZ / 2)
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#endif
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static unsigned decrementer_count; /* count value for 1e6/HZ microseconds */
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static __inline__ unsigned long get_dec (void)
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{
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unsigned long val;
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asm volatile ("mfdec %0":"=r" (val):);
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return val;
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}
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static __inline__ void set_dec (unsigned long val)
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{
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if (val)
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asm volatile ("mtdec %0"::"r" (val));
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}
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void enable_interrupts (void)
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{
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set_msr (get_msr () | MSR_EE);
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}
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/* returns flag if MSR_EE was set before */
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int disable_interrupts (void)
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{
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ulong msr = get_msr ();
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set_msr (msr & ~MSR_EE);
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return ((msr & MSR_EE) != 0);
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}
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int interrupt_init (void)
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{
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/* call cpu specific function from $(CPU)/interrupts.c */
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interrupt_init_cpu (&decrementer_count);
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set_dec (decrementer_count);
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set_msr (get_msr () | MSR_EE);
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return (0);
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}
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static volatile ulong timestamp = 0;
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void timer_interrupt (struct pt_regs *regs)
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{
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/* call cpu specific function from $(CPU)/interrupts.c */
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timer_interrupt_cpu (regs);
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/* Restore Decrementer Count */
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set_dec (decrementer_count);
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timestamp++;
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#if defined(CONFIG_WATCHDOG) || defined (CONFIG_HW_WATCHDOG)
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if ((timestamp % (CONFIG_SYS_WATCHDOG_FREQ)) == 0)
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WATCHDOG_RESET ();
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#endif /* CONFIG_WATCHDOG || CONFIG_HW_WATCHDOG */
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#ifdef CONFIG_LED_STATUS
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status_led_tick (timestamp);
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#endif /* CONFIG_LED_STATUS */
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#ifdef CONFIG_SHOW_ACTIVITY
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board_show_activity (timestamp);
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#endif /* CONFIG_SHOW_ACTIVITY */
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}
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ulong get_timer (ulong base)
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{
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return (timestamp - base);
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}
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