/*
   * OMAP Secure API infrastructure.
   *
   * Copyright (C) 2011 Texas Instruments, Inc.
   *	Santosh Shilimkar <santosh.shilimkar@ti.com>
   *
   *
   * 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/kernel.h>
  #include <linux/init.h>
  #include <linux/io.h>

  #include <linux/memblock.h>

  
  #include <asm/cacheflush.h>

  #include <asm/memblock.h>

  
  #include <mach/omap-secure.h>

  static phys_addr_t omap_secure_memblock_base;

  /**
   * omap_sec_dispatcher: Routine to dispatch low power secure
   * service routines
   * @idx: The HAL API index
   * @flag: The flag indicating criticality of operation
   * @nargs: Number of valid arguments out of four.
   * @arg1, arg2, arg3 args4: Parameters passed to secure API
   *
   * Return the non-zero error value on failure.
   */
  u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, u32 arg1, u32 arg2,
  							 u32 arg3, u32 arg4)
  {
  	u32 ret;
  	u32 param[5];
  
  	param[0] = nargs;
  	param[1] = arg1;
  	param[2] = arg2;
  	param[3] = arg3;
  	param[4] = arg4;
  
  	/*
  	 * Secure API needs physical address
  	 * pointer for the parameters
  	 */
  	flush_cache_all();
  	outer_clean_range(__pa(param), __pa(param + 5));
  	ret = omap_smc2(idx, flag, __pa(param));
  
  	return ret;
  }

  
  /* Allocate the memory to save secure ram */
  int __init omap_secure_ram_reserve_memblock(void)
  {

  	u32 size = OMAP_SECURE_RAM_STORAGE;
  
  	size = ALIGN(size, SZ_1M);

  	omap_secure_memblock_base = arm_memblock_steal(size, SZ_1M);

  
  	return 0;
  }
  
  phys_addr_t omap_secure_ram_mempool_base(void)
  {
  	return omap_secure_memblock_base;
  }