lib/addr_map.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright 2008 Freescale Semiconductor, Inc.
   4  */
   5
   6 #include <common.h>
   7 #include <addr_map.h>
   8
   9 static struct {
  10         phys_addr_t paddr;
  11         phys_size_t size;
  12         unsigned long vaddr;
  13 } address_map[CONFIG_SYS_NUM_ADDR_MAP];
  14
  15 phys_addr_t addrmap_virt_to_phys(void * vaddr)
  16 {
  17         int i;
  18
  19         for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) {
  20                 u64 base, upper, addr;
  21
  22                 if (address_map[i].size == 0)
  23                         continue;
  24
  25                 addr = (u64)((u32)vaddr);
  26                 base = (u64)(address_map[i].vaddr);
  27                 upper = (u64)(address_map[i].size) + base - 1;
  28
  29                 if (addr >= base && addr <= upper) {
  30                         return addr - address_map[i].vaddr + address_map[i].paddr;
  31                 }
  32         }
  33
  34         return (phys_addr_t)(~0);
  35 }
  36
  37 void *addrmap_phys_to_virt(phys_addr_t paddr)
  38 {
  39         int i;
  40
  41         for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++) {
  42                 phys_addr_t base, upper;
  43
  44                 if (address_map[i].size == 0)
  45                         continue;
  46
  47                 base = address_map[i].paddr;
  48                 upper = address_map[i].size + base - 1;
  49
  50                 if (paddr >= base && paddr <= upper) {
  51                         phys_addr_t offset;
  52
  53                         offset = address_map[i].paddr - address_map[i].vaddr;
  54
  55                         return (void *)(unsigned long)(paddr - offset);
  56                 }
  57         }
  58
  59         return (void *)(~0);
  60 }
  61
  62 void addrmap_set_entry(unsigned long vaddr, phys_addr_t paddr,
  63                         phys_size_t size, int idx)
  64 {
  65         if (idx > CONFIG_SYS_NUM_ADDR_MAP)
  66                 return;
  67
  68         address_map[idx].vaddr = vaddr;
  69         address_map[idx].paddr = paddr;
  70         address_map[idx].size  = size;
  71 }