arch/arm/mach-spear/spear1310.c

   1 /*
   2  * arch/arm/mach-spear13xx/spear1310.c
   3  *
   4  * SPEAr1310 machine source file
   5  *
   6  * Copyright (C) 2012 ST Microelectronics
   7  * Viresh Kumar <vireshk@kernel.org>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2. This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 #define pr_fmt(fmt) "SPEAr1310: " fmt
  15
  16 #include <linux/amba/pl022.h>
  17 #include <linux/of_platform.h>
  18 #include <linux/pata_arasan_cf_data.h>
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/map.h>
  21 #include "generic.h"
  22 #include <mach/spear.h>
  23
  24 /* Base addresses */
  25 #define SPEAR1310_RAS_GRP1_BASE                 UL(0xD8000000)
  26 #define VA_SPEAR1310_RAS_GRP1_BASE              UL(0xFA000000)
  27
  28 static void __init spear1310_dt_init(void)
  29 {
  30         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  31         platform_device_register_simple("spear-cpufreq", -1, NULL, 0);
  32 }
  33
  34 static const char * const spear1310_dt_board_compat[] = {
  35         "st,spear1310",
  36         "st,spear1310-evb",
  37         NULL,
  38 };
  39
  40 /*
  41  * Following will create 16MB static virtual/physical mappings
  42  * PHYSICAL             VIRTUAL
  43  * 0xD8000000           0xFA000000
  44  */
  45 static struct map_desc spear1310_io_desc[] __initdata = {
  46         {
  47                 .virtual        = VA_SPEAR1310_RAS_GRP1_BASE,
  48                 .pfn            = __phys_to_pfn(SPEAR1310_RAS_GRP1_BASE),
  49                 .length         = SZ_16M,
  50                 .type           = MT_DEVICE
  51         },
  52 };
  53
  54 static void __init spear1310_map_io(void)
  55 {
  56         iotable_init(spear1310_io_desc, ARRAY_SIZE(spear1310_io_desc));
  57         spear13xx_map_io();
  58 }
  59
  60 DT_MACHINE_START(SPEAR1310_DT, "ST SPEAr1310 SoC with Flattened Device Tree")
  61         .smp            =       smp_ops(spear13xx_smp_ops),
  62         .map_io         =       spear1310_map_io,
  63         .init_time      =       spear13xx_timer_init,
  64         .init_machine   =       spear1310_dt_init,
  65         .restart        =       spear_restart,
  66         .dt_compat      =       spear1310_dt_board_compat,
  67 MACHINE_END