/*
   * arch/sh/mm/cache-shx3.c - SH-X3 optimized cache ops
   *
   * Copyright (C) 2010  Paul Mundt
   *
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   */
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/io.h>
  #include <asm/cache.h>
  
  #define CCR_CACHE_SNM	0x40000		/* Hardware-assisted synonym avoidance */
  #define CCR_CACHE_IBE	0x1000000	/* ICBI broadcast */
  
  void __init shx3_cache_init(void)
  {
  	unsigned int ccr;

  	ccr = __raw_readl(SH_CCR);

  	/*
  	 * If we've got cache aliases, resolve them in hardware.
  	 */
  	if (boot_cpu_data.dcache.n_aliases || boot_cpu_data.icache.n_aliases) {

  		ccr |= CCR_CACHE_SNM;

  		boot_cpu_data.icache.n_aliases = 0;
  		boot_cpu_data.dcache.n_aliases = 0;
  
  		pr_info("Enabling hardware synonym avoidance
  ");
  	}

  #ifdef CONFIG_SMP
  	/*
  	 * Broadcast I-cache block invalidations by default.
  	 */
  	ccr |= CCR_CACHE_IBE;
  #endif

  	writel_uncached(ccr, SH_CCR);

  }