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 
kona_l2_cache_init(void)22 void __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