arch/arm/mach-ux500/cpu-u8500.c

   1 /*
   2  * Copyright (C) 2008-2009 ST-Ericsson
   3  *
   4  * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  */
  11 #include <linux/types.h>
  12 #include <linux/init.h>
  13 #include <linux/device.h>
  14 #include <linux/amba/bus.h>
  15 #include <linux/irq.h>
  16 #include <linux/platform_device.h>
  17
  18 #include <asm/hardware/gic.h>
  19 #include <asm/mach/map.h>
  20 #include <mach/hardware.h>
  21
  22 /* add any platform devices here - TODO */
  23 static struct platform_device *platform_devs[] __initdata = {
  24         /* yet to be added, add i2c0, gpio.. */
  25 };
  26
  27 #define __IO_DEV_DESC(x, sz)    {               \
  28         .virtual        = IO_ADDRESS(x),        \
  29         .pfn            = __phys_to_pfn(x),     \
  30         .length         = sz,                   \
  31         .type           = MT_DEVICE,            \
  32 }
  33
  34 /* minimum static i/o mapping required to boot U8500 platforms */
  35 static struct map_desc u8500_io_desc[] __initdata = {
  36         __IO_DEV_DESC(U8500_GIC_CPU_BASE, SZ_4K),
  37         __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K),
  38         __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
  39         __IO_DEV_DESC(U8500_TWD_BASE, SZ_4K),
  40         __IO_DEV_DESC(U8500_SCU_BASE, SZ_4K),
  41         __IO_DEV_DESC(U8500_BACKUPRAM0_BASE, SZ_8K),
  42 };
  43
  44 void __init u8500_map_io(void)
  45 {
  46         iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
  47 }
  48
  49 void __init u8500_init_irq(void)
  50 {
  51         gic_dist_init(0, __io_address(U8500_GIC_DIST_BASE), 29);
  52         gic_cpu_init(0, __io_address(U8500_GIC_CPU_BASE));
  53 }
  54
  55 /*
  56  * This function is called from the board init
  57  */
  58 void __init u8500_init_devices(void)
  59 {
  60         /* Register the platform devices */
  61         platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
  62
  63         return ;
  64 }