board/emulation/qemu-arm/qemu-arm.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Tuomas Tynkkynen
   4  */
   5 #include <common.h>
   6 #include <fdtdec.h>
   7
   8 #ifdef CONFIG_ARM64
   9 #include <asm/armv8/mmu.h>
  10
  11 static struct mm_region qemu_arm64_mem_map[] = {
  12         {
  13                 /* Flash */
  14                 .virt = 0x00000000UL,
  15                 .phys = 0x00000000UL,
  16                 .size = 0x08000000UL,
  17                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  18                          PTE_BLOCK_INNER_SHARE
  19         }, {
  20                 /* Peripherals */
  21                 .virt = 0x08000000UL,
  22                 .phys = 0x08000000UL,
  23                 .size = 0x38000000,
  24                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  25                          PTE_BLOCK_NON_SHARE |
  26                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  27         }, {
  28                 /* RAM */
  29                 .virt = 0x40000000UL,
  30                 .phys = 0x40000000UL,
  31                 .size = 255UL * SZ_1G,
  32                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  33                          PTE_BLOCK_INNER_SHARE
  34         }, {
  35                 /* List terminator */
  36                 0,
  37         }
  38 };
  39
  40 struct mm_region *mem_map = qemu_arm64_mem_map;
  41 #endif
  42
  43 int board_init(void)
  44 {
  45         return 0;
  46 }
  47
  48 int dram_init(void)
  49 {
  50         if (fdtdec_setup_mem_size_base() != 0)
  51                 return -EINVAL;
  52
  53         return 0;
  54 }
  55
  56 int dram_init_banksize(void)
  57 {
  58         fdtdec_setup_memory_banksize();
  59
  60         return 0;
  61 }
  62
  63 void *board_fdt_blob_setup(void)
  64 {
  65         /* QEMU loads a generated DTB for us at the start of RAM. */
  66         return (void *)CONFIG_SYS_SDRAM_BASE;
  67 }