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/irqchip.h>
  19 #include <linux/clocksource.h>
  20
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/time.h>
  23 #include <asm/hardware/cache-l2x0.h>
  24
  25
  26 #include "bcm_kona_smc.h"
  27
  28 static int __init kona_l2_cache_init(void)
  29 {
  30         if (!IS_ENABLED(CONFIG_CACHE_L2X0))
  31                 return 0;
  32
  33         bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
  34
  35         /*
  36          * The aux_val and aux_mask have no effect since L2 cache is already
  37          * enabled.  Pass 0s for aux_val and 1s for aux_mask for default value.
  38          */
  39         l2x0_of_init(0, ~0);
  40
  41         return 0;
  42 }
  43
  44 static void __init board_init(void)
  45 {
  46         of_platform_populate(NULL, of_default_bus_match_table, NULL,
  47                 &platform_bus);
  48
  49         bcm_kona_smc_init();
  50
  51         kona_l2_cache_init();
  52 }
  53
  54 static const char * const bcm11351_dt_compat[] = { "bcm,bcm11351", NULL, };
  55
  56 DT_MACHINE_START(BCM11351_DT, "Broadcom Application Processor")
  57         .init_irq = irqchip_init,
  58         .init_time = clocksource_of_init,
  59         .init_machine = board_init,
  60         .dt_compat = bcm11351_dt_compat,
  61 MACHINE_END