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lib/addr_map.c 1.36 KB
63240ba88   Kumar Gala   Introduce addr_ma...
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  /*
   * Copyright 2008 Freescale Semiconductor, Inc.
   *
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   * SPDX-License-Identifier:	GPL-2.0
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   */
  
  #include <common.h>
  #include <addr_map.h>
  
  static struct {
  	phys_addr_t paddr;
  	phys_size_t size;
  	unsigned long vaddr;
  } address_map[CONFIG_SYS_NUM_ADDR_MAP];
  
  phys_addr_t addrmap_virt_to_phys(void * vaddr)
  {
  	int i;
  
  	for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) {
  		u64 base, upper, addr;
  
  		if (address_map[i].size == 0)
  			continue;
  
  		addr = (u64)((u32)vaddr);
  		base = (u64)(address_map[i].vaddr);
  		upper = (u64)(address_map[i].size) + base - 1;
  
  		if (addr >= base && addr <= upper) {
  			return addr - address_map[i].vaddr + address_map[i].paddr;
  		}
  	}
  
  	return (phys_addr_t)(~0);
  }
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  void *addrmap_phys_to_virt(phys_addr_t paddr)
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  {
  	int i;
  
  	for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) {
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  		phys_addr_t base, upper;
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  		if (address_map[i].size == 0)
  			continue;
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  		base = address_map[i].paddr;
  		upper = address_map[i].size + base - 1;
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  		if (paddr >= base && paddr <= upper) {
  			phys_addr_t offset;
  
  			offset = address_map[i].paddr - address_map[i].vaddr;
  
  			return (void *)(unsigned long)(paddr - offset);
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  		}
  	}
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  	return (void *)(~0);
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  }
  
  void addrmap_set_entry(unsigned long vaddr, phys_addr_t paddr,
  			phys_size_t size, int idx)
  {
  	if (idx > CONFIG_SYS_NUM_ADDR_MAP)
  		return;
  
  	address_map[idx].vaddr = vaddr;
  	address_map[idx].paddr = paddr;
  	address_map[idx].size  = size;
  }