>How I can reset or flush D-Cache on Arm?
>From an application, or in the kernel?
For the former, you need something like this (from glibc):
#define CLEAR_CACHE(BEG,END) \
{ \
register unsigned long _beg __asm ("a1") = (unsigned long)(BEG); \
register unsigned long _end __asm ("a2") = (unsigned long)(END); \
register unsigned long _flg __asm ("a3") = 0; \
__asm __volatile ("swi 0x9f0002 @ sys_cacheflush" \
: /* no outputs */ \
: /* no inputs */ \
: "a1"); \
}
For the latter, you need the flush_cache_xx() functions that are defined in
asm-arm/proc-xx/cache.h.
p.
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