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