From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001 From: James <> Date: Wed, 4 Nov 2015 11:49:21 +0000 Subject: trunk-47381 --- .../linux/brcm63xx/image/lzma-loader/src/cache.c | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 target/linux/brcm63xx/image/lzma-loader/src/cache.c (limited to 'target/linux/brcm63xx/image/lzma-loader/src/cache.c') diff --git a/target/linux/brcm63xx/image/lzma-loader/src/cache.c b/target/linux/brcm63xx/image/lzma-loader/src/cache.c new file mode 100644 index 0000000..93751c3 --- /dev/null +++ b/target/linux/brcm63xx/image/lzma-loader/src/cache.c @@ -0,0 +1,46 @@ +/* + * LZMA compressed kernel loader for Atheros AR7XXX/AR9XXX based boards + * + * Copyright (C) 2011 Gabor Juhos + * + * The cache manipulation routine has been taken from the U-Boot project. + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ + +#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; + } +} -- cgit v1.2.3