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kernel/linux-imx6_3.14.28/arch/arm/mach-mmp/common.c 1.19 KB
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  /*
   *  linux/arch/arm/mach-mmp/common.c
   *
   *  Code common to PXA168 processor lines
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/module.h>
  
  #include <asm/page.h>
  #include <asm/mach/map.h>
  #include <asm/system_misc.h>
  #include <mach/addr-map.h>
  #include <mach/cputype.h>
  
  #include "common.h"
  
  #define MMP_CHIPID	(AXI_VIRT_BASE + 0x82c00)
  
  unsigned int mmp_chip_id;
  EXPORT_SYMBOL(mmp_chip_id);
  
  static struct map_desc standard_io_desc[] __initdata = {
  	{
  		.pfn		= __phys_to_pfn(APB_PHYS_BASE),
  		.virtual	= (unsigned long)APB_VIRT_BASE,
  		.length		= APB_PHYS_SIZE,
  		.type		= MT_DEVICE,
  	}, {
  		.pfn		= __phys_to_pfn(AXI_PHYS_BASE),
  		.virtual	= (unsigned long)AXI_VIRT_BASE,
  		.length		= AXI_PHYS_SIZE,
  		.type		= MT_DEVICE,
  	},
  };
  
  void __init mmp_map_io(void)
  {
  	iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
  
  	/* this is early, initialize mmp_chip_id here */
  	mmp_chip_id = __raw_readl(MMP_CHIPID);
  }
  
  void mmp_restart(enum reboot_mode mode, const char *cmd)
  {
  	soft_restart(0);
  }