arch/arm/mach-kirkwood/board-dt.c

   1 /*
   2  * Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net>
   3  *
   4  * arch/arm/mach-kirkwood/board-dt.c
   5  *
   6  * Flattened Device Tree board initialization
   7  *
   8  * This file is licensed under the terms of the GNU General Public
   9  * License version 2.  This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/of.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/kexec.h>
  18 #include <asm/mach/arch.h>
  19 #include <asm/mach/map.h>
  20 #include <mach/bridge-regs.h>
  21 #include "common.h"
  22
  23 static struct of_device_id kirkwood_dt_match_table[] __initdata = {
  24         { .compatible = "simple-bus", },
  25         { }
  26 };
  27
  28 static void __init kirkwood_dt_init(void)
  29 {
  30         pr_info("Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk);
  31
  32         /*
  33          * Disable propagation of mbus errors to the CPU local bus,
  34          * as this causes mbus errors (which can occur for example
  35          * for PCI aborts) to throw CPU aborts, which we're not set
  36          * up to deal with.
  37          */
  38         writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG);
  39
  40         kirkwood_setup_cpu_mbus();
  41
  42 #ifdef CONFIG_CACHE_FEROCEON_L2
  43         kirkwood_l2_init();
  44 #endif
  45
  46         /* internal devices that every board has */
  47         kirkwood_wdt_init();
  48         kirkwood_xor0_init();
  49         kirkwood_xor1_init();
  50         kirkwood_crypto_init();
  51
  52 #ifdef CONFIG_KEXEC
  53         kexec_reinit = kirkwood_enable_pcie;
  54 #endif
  55
  56         if (of_machine_is_compatible("globalscale,dreamplug"))
  57                 dreamplug_init();
  58
  59         of_platform_populate(NULL, kirkwood_dt_match_table, NULL, NULL);
  60 }
  61
  62 static const char *kirkwood_dt_board_compat[] = {
  63         "globalscale,dreamplug",
  64         NULL
  65 };
  66
  67 DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
  68         /* Maintainer: Jason Cooper <jason@lakedaemon.net> */
  69         .map_io         = kirkwood_map_io,
  70         .init_early     = kirkwood_init_early,
  71         .init_irq       = kirkwood_init_irq,
  72         .timer          = &kirkwood_timer,
  73         .init_machine   = kirkwood_dt_init,
  74         .restart        = kirkwood_restart,
  75         .dt_compat      = kirkwood_dt_board_compat,
  76 MACHINE_END