arch/arm/mach-bcm/board_bcm.c

   1 /*
   2  * Copyright (C) 2012 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
  25 #include "bcm_kona_smc.h"
  26
  27 static int __init kona_l2_cache_init(void)
  28 {
  29         if (!IS_ENABLED(CONFIG_CACHE_L2X0))
  30                 return 0;
  31
  32         bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
  33
  34         /*
  35          * The aux_val and aux_mask have no effect since L2 cache is already
  36          * enabled.  Pass 0s for aux_val and 1s for aux_mask for default value.
  37          */
  38         l2x0_of_init(0, ~0);
  39
  40         return 0;
  41 }
  42
  43 static void __init board_init(void)
  44 {
  45         of_platform_populate(NULL, of_default_bus_match_table, NULL,
  46                 &platform_bus);
  47
  48         bcm_kona_smc_init();
  49
  50         kona_l2_cache_init();
  51 }
  52
  53 static const char * const bcm11351_dt_compat[] = { "bcm,bcm11351", NULL, };
  54
  55 DT_MACHINE_START(BCM11351_DT, "Broadcom Application Processor")
  56         .init_time = clocksource_of_init,
  57         .init_machine = board_init,
  58         .dt_compat = bcm11351_dt_compat,
  59 MACHINE_END