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 21 void __init kona_l2_cache_init(void) 22 { 23 unsigned int result; 24 int ret; 25 26 ret = bcm_kona_smc_init(); 27 if (ret) { 28 pr_info("Secure API not available (%d). Skipping L2 init.\n", 29 ret); 30 return; 31 } 32 33 result = bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0); 34 if (result != SEC_ROM_RET_OK) { 35 pr_err("Secure Monitor call failed (%u)! Skipping L2 init.\n", 36 result); 37 return; 38 } 39 40 /* 41 * The aux_val and aux_mask have no effect since L2 cache is already 42 * enabled. Pass 0s for aux_val and 1s for aux_mask for default value. 43 */ 44 ret = l2x0_of_init(0, ~0); 45 if (ret) 46 pr_err("Couldn't enable L2 cache: %d\n", ret); 47 } 48