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

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Tuomas Tynkkynen
   4  */
   5
   6 #include <common.h>
   7 #include <dm.h>
   8 #include <fdtdec.h>
   9 #include <virtio_types.h>
  10 #include <virtio.h>
  11
  12 #ifdef CONFIG_ARM64
  13 #include <asm/armv8/mmu.h>
  14
  15 static struct mm_region qemu_arm64_mem_map[] = {
  16         {
  17                 /* Flash */
  18                 .virt = 0x00000000UL,
  19                 .phys = 0x00000000UL,
  20                 .size = 0x08000000UL,
  21                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  22                          PTE_BLOCK_INNER_SHARE
  23         }, {
  24                 /* Lowmem peripherals */
  25                 .virt = 0x08000000UL,
  26                 .phys = 0x08000000UL,
  27                 .size = 0x38000000,
  28                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  29                          PTE_BLOCK_NON_SHARE |
  30                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  31         }, {
  32                 /* RAM */
  33                 .virt = 0x40000000UL,
  34                 .phys = 0x40000000UL,
  35                 .size = 255UL * SZ_1G,
  36                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  37                          PTE_BLOCK_INNER_SHARE
  38         }, {
  39                 /* Highmem PCI-E ECAM memory area */
  40                 .virt = 0x4010000000ULL,
  41                 .phys = 0x4010000000ULL,
  42                 .size = 0x10000000,
  43                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  44                          PTE_BLOCK_NON_SHARE |
  45                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  46         }, {
  47                 /* Highmem PCI-E MMIO memory area */
  48                 .virt = 0x8000000000ULL,
  49                 .phys = 0x8000000000ULL,
  50                 .size = 0x8000000000ULL,
  51                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  52                          PTE_BLOCK_NON_SHARE |
  53                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  54         }, {
  55                 /* List terminator */
  56                 0,
  57         }
  58 };
  59
  60 struct mm_region *mem_map = qemu_arm64_mem_map;
  61 #endif
  62
  63 int board_init(void)
  64 {
  65         /*
  66          * Make sure virtio bus is enumerated so that peripherals
  67          * on the virtio bus can be discovered by their drivers
  68          */
  69         virtio_init();
  70
  71         return 0;
  72 }
  73
  74 int dram_init(void)
  75 {
  76         if (fdtdec_setup_mem_size_base() != 0)
  77                 return -EINVAL;
  78
  79         return 0;
  80 }
  81
  82 int dram_init_banksize(void)
  83 {
  84         fdtdec_setup_memory_banksize();
  85
  86         return 0;
  87 }
  88
  89 void *board_fdt_blob_setup(void)
  90 {
  91         /* QEMU loads a generated DTB for us at the start of RAM. */
  92         return (void *)CONFIG_SYS_SDRAM_BASE;
  93 }