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

   1 /*
   2  * Copyright (c) 2017 Tuomas Tynkkynen
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6 #include <common.h>
   7 #include <fdtdec.h>
   8
   9 #ifdef CONFIG_ARM64
  10 #include <asm/armv8/mmu.h>
  11
  12 static struct mm_region qemu_arm64_mem_map[] = {
  13         {
  14                 /* Flash */
  15                 .virt = 0x00000000UL,
  16                 .phys = 0x00000000UL,
  17                 .size = 0x08000000UL,
  18                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  19                          PTE_BLOCK_INNER_SHARE
  20         }, {
  21                 /* Peripherals */
  22                 .virt = 0x08000000UL,
  23                 .phys = 0x08000000UL,
  24                 .size = 0x38000000,
  25                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  26                          PTE_BLOCK_NON_SHARE |
  27                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  28         }, {
  29                 /* RAM */
  30                 .virt = 0x40000000UL,
  31                 .phys = 0x40000000UL,
  32                 .size = 0xc0000000UL,
  33                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  34                          PTE_BLOCK_INNER_SHARE
  35         }, {
  36                 /* List terminator */
  37                 0,
  38         }
  39 };
  40
  41 struct mm_region *mem_map = qemu_arm64_mem_map;
  42 #endif
  43
  44 int board_init(void)
  45 {
  46         return 0;
  47 }
  48
  49 int dram_init(void)
  50 {
  51         if (fdtdec_setup_memory_size() != 0)
  52                 return -EINVAL;
  53
  54         return 0;
  55 }
  56
  57 int dram_init_banksize(void)
  58 {
  59         fdtdec_setup_memory_banksize();
  60
  61         return 0;
  62 }
  63
  64 void *board_fdt_blob_setup(void)
  65 {
  66         /* QEMU loads a generated DTB for us at the start of RAM. */
  67         return (void *)CONFIG_SYS_SDRAM_BASE;
  68 }