LXR linux/arch/arm/mach-bcm/kona_l2

   1/*
   2 * Copyright (C) 2012-2014 Broadcom Corporation
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License as
   6 * published by the Free Software Foundation version 2.
   7 *
   8 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   9 * kind, whether express or implied; without even the implied warranty
  10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 * GNU General Public License for more details.
  12 */
  13
  14
  15#include <linux/init.h>
  16#include <linux/printk.h>
  17#include <asm/hardware/cache-l2x0.h>
  18
  19#include "bcm_kona_smc.h"
  20#include "kona_l2_cache.h"
  21
  22void __init kona_l2_cache_init(void)
  23{
  24        unsigned int result;
  25        int ret;
  26
  27        ret = bcm_kona_smc_init();
  28        if (ret) {
  29                pr_info("Secure API not available (%d). Skipping L2 init.\n",
  30                        ret);
  31                return;
  32        }
  33
  34        result = bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
  35        if (result != SEC_ROM_RET_OK) {
  36                pr_err("Secure Monitor call failed (%u)! Skipping L2 init.\n",
  37                        result);
  38                return;
  39        }
  40
  41        /*
  42         * The aux_val and aux_mask have no effect since L2 cache is already
  43         * enabled.  Pass 0s for aux_val and 1s for aux_mask for default value.
  44         */
  45        ret = l2x0_of_init(0, ~0);
  46        if (ret)
  47                pr_err("Couldn't enable L2 cache: %d\n", ret);
  48}
  49