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/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/* for now: just dummy functions to satisfy the linker */
#include <common.h>
__weak void flush_cache(unsigned long start, unsigned long size)
{
#if defined(CONFIG_ARM1136)
#if !defined(CONFIG_SYS_ICACHE_OFF)
asm("mcr p15, 0, r1, c7, c5, 0"); /* invalidate I cache */
#endif
#if !defined(CONFIG_SYS_DCACHE_OFF)
asm("mcr p15, 0, r1, c7, c14, 0"); /* Clean+invalidate D cache */
#endif
#endif /* CONFIG_ARM1136 */
#ifdef CONFIG_ARM926EJS
/* test and clean, page 2-23 of arm926ejs manual */
asm("0: mrc p15, 0, r15, c7, c10, 3\n\t" "bne 0b\n" : : : "memory");
/* disable write buffer as well (page 2-22) */
asm("mcr p15, 0, %0, c7, c10, 4" : : "r" (0));
#endif /* CONFIG_ARM926EJS */
return;
}
/*
* Default implementation:
* do a range flush for the entire range
*/
__weak void flush_dcache_all(void)
{
flush_cache(0, ~0);
}
/*
* Default implementation of enable_caches()
* Real implementation should be in platform code
*/
__weak void enable_caches(void)
{
puts("WARNING: Caches not enabled\n");
}
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