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Generic udelay() with watchdog support

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According to the PPC reference implementation the udelay() function is
responsible for resetting the watchdog timer as frequently as needed.
Most other architectures do not meet that requirement, so long-running
operations might result in a watchdog reset.

This patch adds a generic udelay() function which takes care of
resetting the watchdog before calling an architecture-specific
__udelay().

Signed-off-by: Ingo van Lil <inguin@gmx.de>
This commit is contained in:
Ingo van Lil 2009-11-24 14:09:21 +01:00 • committed by Wolfgang Denk
parent 1c409bc710
commit 3eb90bad65
47 changed files with 98 additions and 62 deletions
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5
include/common.h
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@ -607,11 +607,14 @@ unsigned long long get_ticks(void);
void wait_ticks (unsigned long);
/* lib_$(ARCH)/time.c */
void udelay (unsigned long);
void __udelay (unsigned long);
ulong usec2ticks (unsigned long usec);
ulong ticks2usec (unsigned long ticks);
int init_timebase (void);
/* lib_generic/time.c */
void udelay (unsigned long);
/* lib_generic/vsprintf.c */
ulong simple_strtoul(const char *cp,char **endp,unsigned int base);
#ifdef CONFIG_SYS_64BIT_VSPRINTF