arch/arm/mach-mx5/cpu.c

   1 /*
   2  * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * The code contained herein is licensed under the GNU General Public
   5  * License. You may obtain a copy of the GNU General Public License
   6  * Version 2 or later at the following locations:
   7  *
   8  * http://www.opensource.org/licenses/gpl-license.html
   9  * http://www.gnu.org/copyleft/gpl.html
  10  *
  11  * This file contains the CPU initialization code.
  12  */
  13
  14 #include <linux/types.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <mach/hardware.h>
  18 #include <asm/io.h>
  19
  20 static int __init post_cpu_init(void)
  21 {
  22         unsigned int reg;
  23         void __iomem *base;
  24
  25         if (!cpu_is_mx51())
  26                 return 0;
  27
  28         base = MX51_IO_ADDRESS(MX51_AIPS1_BASE_ADDR);
  29         __raw_writel(0x0, base + 0x40);
  30         __raw_writel(0x0, base + 0x44);
  31         __raw_writel(0x0, base + 0x48);
  32         __raw_writel(0x0, base + 0x4C);
  33         reg = __raw_readl(base + 0x50) & 0x00FFFFFF;
  34         __raw_writel(reg, base + 0x50);
  35
  36         base = MX51_IO_ADDRESS(MX51_AIPS2_BASE_ADDR);
  37         __raw_writel(0x0, base + 0x40);
  38         __raw_writel(0x0, base + 0x44);
  39         __raw_writel(0x0, base + 0x48);
  40         __raw_writel(0x0, base + 0x4C);
  41         reg = __raw_readl(base + 0x50) & 0x00FFFFFF;
  42         __raw_writel(reg, base + 0x50);
  43
  44         return 0;
  45 }
  46
  47 postcore_initcall(post_cpu_init);