arch/arm/mach-uniphier/arm64/mem_map.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
   4  */
   5
   6 #include <linux/types.h>
   7 #include <asm/armv8/mmu.h>
   8
   9 #include "../init.h"
  10
  11 static struct mm_region uniphier_mem_map[] = {
  12         {
  13                 .virt = 0x00000000,
  14                 .phys = 0x00000000,
  15                 .size = 0x80000000,
  16                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  17                          PTE_BLOCK_NON_SHARE |
  18                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  19         },
  20         {
  21                 .virt = 0x80000000,
  22                 .phys = 0x80000000,
  23                 .size = 0xc0000000,
  24                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  25                          PTE_BLOCK_INNER_SHARE
  26         },
  27         { /* sentinel */ }
  28 };
  29
  30 struct mm_region *mem_map = uniphier_mem_map;
  31
  32 void uniphier_mem_map_init(unsigned long dram_base, unsigned long dram_size)
  33 {
  34         uniphier_mem_map[0].size = dram_base;
  35         uniphier_mem_map[1].virt = dram_base;
  36         uniphier_mem_map[1].phys = dram_base;
  37         uniphier_mem_map[1].size = dram_size;
  38 }