arch/arm/mach-bcm/kona_l2_cache.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 // Copyright (C) 2012-2014 Broadcom Corporation
   3
   4
   5 #include <linux/init.h>
   6 #include <linux/printk.h>
   7 #include <asm/hardware/cache-l2x0.h>
   8
   9 #include "bcm_kona_smc.h"
  10 #include "kona_l2_cache.h"
  11
  12 void __init kona_l2_cache_init(void)
  13 {
  14         unsigned int result;
  15         int ret;
  16
  17         ret = bcm_kona_smc_init();
  18         if (ret) {
  19                 pr_info("Secure API not available (%d). Skipping L2 init.\n",
  20                         ret);
  21                 return;
  22         }
  23
  24         result = bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
  25         if (result != SEC_ROM_RET_OK) {
  26                 pr_err("Secure Monitor call failed (%u)! Skipping L2 init.\n",
  27                         result);
  28                 return;
  29         }
  30
  31         /*
  32          * The aux_val and aux_mask have no effect since L2 cache is already
  33          * enabled.  Pass 0s for aux_val and 1s for aux_mask for default value.
  34          */
  35         ret = l2x0_of_init(0, ~0);
  36         if (ret)
  37                 pr_err("Couldn't enable L2 cache: %d\n", ret);
  38 }