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bootloader/u-boot_2015_04/common/malloc_simple.c 675 Bytes
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  /*
   * Simple malloc implementation
   *
   * Copyright (c) 2014 Google, Inc
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <malloc.h>
  #include <asm/io.h>
  
  DECLARE_GLOBAL_DATA_PTR;
  
  void *malloc_simple(size_t bytes)
  {
  	ulong new_ptr;
  	void *ptr;
  
  	new_ptr = gd->malloc_ptr + bytes;
  	if (new_ptr > gd->malloc_limit)
  		return NULL;
  	ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes);
  	gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
  	return ptr;
  }
  
  #ifdef CONFIG_SYS_MALLOC_SIMPLE
  void *calloc(size_t nmemb, size_t elem_size)
  {
  	size_t size = nmemb * elem_size;
  	void *ptr;
  
  	ptr = malloc(size);
  	memset(ptr, '\0', size);
  
  	return ptr;
  }
  #endif