arch/arm/mach-ux500/cpu.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2010
   3  *
   4  * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
   5  * License terms: GNU General Public License (GPL) version 2
   6  */
   7
   8 #include <linux/platform_device.h>
   9 #include <linux/io.h>
  10 #include <linux/clk.h>
  11 #include <linux/mfd/db8500-prcmu.h>
  12 #include <linux/mfd/db5500-prcmu.h>
  13
  14 #include <asm/hardware/gic.h>
  15 #include <asm/mach/map.h>
  16 #include <asm/localtimer.h>
  17
  18 #include <plat/mtu.h>
  19 #include <mach/hardware.h>
  20 #include <mach/setup.h>
  21 #include <mach/devices.h>
  22
  23 #include "clock.h"
  24
  25 void __iomem *_PRCMU_BASE;
  26
  27 void __init ux500_init_irq(void)
  28 {
  29         void __iomem *dist_base;
  30         void __iomem *cpu_base;
  31
  32         if (cpu_is_u5500()) {
  33                 dist_base = __io_address(U5500_GIC_DIST_BASE);
  34                 cpu_base = __io_address(U5500_GIC_CPU_BASE);
  35         } else if (cpu_is_u8500()) {
  36                 dist_base = __io_address(U8500_GIC_DIST_BASE);
  37                 cpu_base = __io_address(U8500_GIC_CPU_BASE);
  38         } else
  39                 ux500_unknown_soc();
  40
  41         gic_init(0, 29, dist_base, cpu_base);
  42
  43         /*
  44          * Init clocks here so that they are available for system timer
  45          * initialization.
  46          */
  47         if (cpu_is_u5500())
  48                 db5500_prcmu_early_init();
  49         if (cpu_is_u8500())
  50                 prcmu_early_init();
  51         clk_init();
  52 }
  53
  54 static void __init ux500_timer_init(void)
  55 {
  56 #ifdef CONFIG_LOCAL_TIMERS
  57         /* Setup the local timer base */
  58         if (cpu_is_u5500())
  59                 twd_base = __io_address(U5500_TWD_BASE);
  60         else if (cpu_is_u8500())
  61                 twd_base = __io_address(U8500_TWD_BASE);
  62         else
  63                 ux500_unknown_soc();
  64 #endif
  65         if (cpu_is_u5500())
  66                 mtu_base = __io_address(U5500_MTU0_BASE);
  67         else if (cpu_is_u8500ed())
  68                 mtu_base = __io_address(U8500_MTU0_BASE_ED);
  69         else if (cpu_is_u8500())
  70                 mtu_base = __io_address(U8500_MTU0_BASE);
  71         else
  72                 ux500_unknown_soc();
  73
  74         nmdk_timer_init();
  75 }
  76
  77 struct sys_timer ux500_timer = {
  78         .init   = ux500_timer_init,
  79 };