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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* LZMA compressed kernel loader for Atheros AR7XXX/AR9XXX based boards
*
* Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
*
* The cache manipulation routine has been taken from the U-Boot project.
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
*/
#include "cache.h"
#include "cacheops.h"
#include "config.h"
#include "printf.h"
#define cache_op(op,addr) \
__asm__ __volatile__( \
" .set push \n" \
" .set noreorder \n" \
" .set mips3\n\t \n" \
" cache %0, %1 \n" \
" .set pop \n" \
: \
: "i" (op), "R" (*(unsigned char *)(addr)))
void flush_cache(unsigned long start_addr, unsigned long size)
{
unsigned long lsize = CONFIG_CACHELINE_SIZE;
unsigned long addr = start_addr & ~(lsize - 1);
unsigned long aend = (start_addr + size + (lsize - 1)) & ~(lsize - 1);
printf("blasting from 0x%08x to 0x%08x (0x%08x - 0x%08x)\n", start_addr, size, addr, aend);
while (1) {
cache_op(Hit_Writeback_Inv_D, addr);
cache_op(Hit_Invalidate_I, addr);
if (addr == aend)
break;
addr += lsize;
}
}
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