u-boot/arch/riscv/lib/cache.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017 Andes Technology Corporation
* Rick Chen, Andes Technology Corporation <rick@andestech.com>
*/
#include <common.h>
void invalidate_icache_all(void)
{
asm volatile ("fence.i" ::: "memory");
}
__weak void flush_dcache_all(void)
{
}
__weak void flush_dcache_range(unsigned long start, unsigned long end)
{
}
void invalidate_icache_range(unsigned long start, unsigned long end)
{
/*
* RISC-V does not have an instruction for invalidating parts of the
* instruction cache. Invalidate all of it instead.
*/
invalidate_icache_all();
}
__weak void invalidate_dcache_range(unsigned long start, unsigned long end)
{
}
void cache_flush(void)
{
invalidate_icache_all();
flush_dcache_all();
}
void flush_cache(unsigned long addr, unsigned long size)
{
invalidate_icache_range(addr, addr + size);
flush_dcache_range(addr, addr + size);
}
__weak void icache_enable(void)
{
}
__weak void icache_disable(void)
{
}
__weak int icache_status(void)
{
return 0;
}
__weak void dcache_enable(void)
{
}
__weak void dcache_disable(void)
{
}
__weak int dcache_status(void)
{
return 0;
}