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                 /* Lowmem 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                 /* Highmem PCI-E ECAM memory area */
  36                 .virt = 0x4010000000ULL,
  37                 .phys = 0x4010000000ULL,
  38                 .size = 0x10000000,
  39                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  40                          PTE_BLOCK_NON_SHARE |
  41                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  42         }, {
  43                 /* Highmem PCI-E MMIO memory area */
  44                 .virt = 0x8000000000ULL,
  45                 .phys = 0x8000000000ULL,
  46                 .size = 0x8000000000ULL,
  47                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  48                          PTE_BLOCK_NON_SHARE |
  49                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  50         }, {
  51                 /* List terminator */
  52                 0,
  53         }
  54 };
  55
  56 struct mm_region *mem_map = qemu_arm64_mem_map;
  57 #endif
  58
  59 int board_init(void)
  60 {
  61         return 0;
  62 }
  63
  64 int dram_init(void)
  65 {
  66         if (fdtdec_setup_mem_size_base() != 0)
  67                 return -EINVAL;
  68
  69         return 0;
  70 }
  71
  72 int dram_init_banksize(void)
  73 {
  74         fdtdec_setup_memory_banksize();
  75
  76         return 0;
  77 }
  78
  79 void *board_fdt_blob_setup(void)
  80 {
  81         /* QEMU loads a generated DTB for us at the start of RAM. */
  82         return (void *)CONFIG_SYS_SDRAM_BASE;
  83 }