1 /* 2 * Copyright (C) 2012-2013 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 #include <linux/of_platform.h> 15 #include <linux/init.h> 16 #include <linux/device.h> 17 #include <linux/platform_device.h> 18 #include <linux/clocksource.h> 19 20 #include <asm/mach/arch.h> 21 #include <asm/mach/time.h> 22 #include <asm/hardware/cache-l2x0.h> 23 24 #include "bcm_kona_smc.h" 25 #include "kona.h" 26 27 static int __init kona_l2_cache_init(void) 28 { 29 if (!IS_ENABLED(CONFIG_CACHE_L2X0)) 30 return 0; 31 32 if (bcm_kona_smc_init() < 0) { 33 pr_info("Kona secure API not available. Skipping L2 init\n"); 34 return 0; 35 } 36 37 bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0); 38 39 /* 40 * The aux_val and aux_mask have no effect since L2 cache is already 41 * enabled. Pass 0s for aux_val and 1s for aux_mask for default value. 42 */ 43 return l2x0_of_init(0, ~0); 44 } 45 46 static void bcm_board_setup_restart(void) 47 { 48 struct device_node *np; 49 50 np = of_find_compatible_node(NULL, NULL, "brcm,bcm11351"); 51 if (np) { 52 if (of_device_is_available(np)) 53 bcm_kona_setup_restart(); 54 of_node_put(np); 55 } 56 /* Restart setup for other boards goes here */ 57 } 58 59 static void __init board_init(void) 60 { 61 of_platform_populate(NULL, of_default_bus_match_table, NULL, 62 &platform_bus); 63 64 bcm_board_setup_restart(); 65 kona_l2_cache_init(); 66 } 67 68 static const char * const bcm11351_dt_compat[] = { "brcm,bcm11351", NULL, }; 69 70 DT_MACHINE_START(BCM11351_DT, "Broadcom Application Processor") 71 .init_machine = board_init, 72 .restart = bcm_kona_restart, 73 .dt_compat = bcm11351_dt_compat, 74 MACHINE_END 75