EmbeddedPkg/Application/AndroidFastboot/Arm/BootAndroidBootImg.c

   1 /** @file
   2
   3   Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>
   4
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "AndroidFastbootApp.h"
  16
  17 #include <Protocol/DevicePath.h>
  18
  19 #include <Library/BdsLib.h>
  20 #include <Library/DevicePathLib.h>
  21
  22 #include <Guid/ArmGlobalVariableHob.h>
  23
  24 // Device Path representing an image in memory
  25 #pragma pack(1)
  26 typedef struct {
  27   MEMMAP_DEVICE_PATH                      Node1;
  28   EFI_DEVICE_PATH_PROTOCOL                End;
  29 } MEMORY_DEVICE_PATH;
  30 #pragma pack()
  31
  32 STATIC CONST MEMORY_DEVICE_PATH MemoryDevicePathTemplate =
  33 {
  34   {
  35     {
  36       HARDWARE_DEVICE_PATH,
  37       HW_MEMMAP_DP,
  38       {
  39         (UINT8)(sizeof (MEMMAP_DEVICE_PATH)),
  40         (UINT8)((sizeof (MEMMAP_DEVICE_PATH)) >> 8),
  41       },
  42     }, // Header
  43     0, // StartingAddress (set at runtime)
  44     0  // EndingAddress   (set at runtime)
  45   }, // Node1
  46   {
  47     END_DEVICE_PATH_TYPE,
  48     END_ENTIRE_DEVICE_PATH_SUBTYPE,
  49     sizeof (EFI_DEVICE_PATH_PROTOCOL),
  50     0
  51   } // End
  52 };
  53
  54 EFI_STATUS
  55 BootAndroidBootImg (
  56   IN UINTN    BufferSize,
  57   IN VOID    *Buffer
  58   )
  59 {
  60   EFI_DEVICE_PATH_PROTOCOL           *FdtDevicePath;
  61   EFI_STATUS                          Status;
  62   CHAR8                               KernelArgs[BOOTIMG_KERNEL_ARGS_SIZE];
  63   VOID                               *Kernel;
  64   UINTN                               KernelSize;
  65   VOID                               *Ramdisk;
  66   UINTN                               RamdiskSize;
  67   MEMORY_DEVICE_PATH                  KernelDevicePath;
  68   MEMORY_DEVICE_PATH*                 RamdiskDevicePath;
  69
  70   Status = ParseAndroidBootImg (
  71             Buffer,
  72             &Kernel,
  73             &KernelSize,
  74             &Ramdisk,
  75             &RamdiskSize,
  76             KernelArgs
  77             );
  78   if (EFI_ERROR (Status)) {
  79     return Status;
  80   }
  81
  82   KernelDevicePath = MemoryDevicePathTemplate;
  83
  84   // Have to cast to UINTN before casting to EFI_PHYSICAL_ADDRESS in order to
  85   // appease GCC.
  86   KernelDevicePath.Node1.StartingAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Kernel;
  87   KernelDevicePath.Node1.EndingAddress   = (EFI_PHYSICAL_ADDRESS)(UINTN) Kernel + KernelSize;
  88
  89   RamdiskDevicePath = NULL;
  90   if (RamdiskSize != 0) {
  91     RamdiskDevicePath = (MEMORY_DEVICE_PATH*)DuplicateDevicePath ((EFI_DEVICE_PATH_PROTOCOL*) &MemoryDevicePathTemplate);
  92
  93     RamdiskDevicePath->Node1.StartingAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Ramdisk;
  94     RamdiskDevicePath->Node1.EndingAddress   = ((EFI_PHYSICAL_ADDRESS)(UINTN) Ramdisk) + RamdiskSize;
  95   }
  96
  97   // Get the default FDT device path
  98   Status = GetEnvironmentVariable ((CHAR16 *)L"Fdt", &gArmGlobalVariableGuid,
  99              NULL, 0, (VOID **)&FdtDevicePath);
 100   if (Status == EFI_NOT_FOUND) {
 101     DEBUG ((EFI_D_ERROR, "Error: Please update FDT path in boot manager\n"));
 102     return EFI_DEVICE_ERROR;
 103   }
 104   ASSERT_EFI_ERROR (Status);
 105
 106   Status = BdsBootLinuxFdt (
 107               (EFI_DEVICE_PATH_PROTOCOL *) &KernelDevicePath,
 108               (EFI_DEVICE_PATH_PROTOCOL *) RamdiskDevicePath,
 109               KernelArgs,
 110               FdtDevicePath
 111               );
 112   if (EFI_ERROR (Status)) {
 113     DEBUG ((EFI_D_ERROR, "Couldn't Boot Linux: %d\n", Status));
 114     return EFI_DEVICE_ERROR;
 115   }
 116
 117   if (RamdiskDevicePath) {
 118     FreePool (RamdiskDevicePath);
 119   }
 120
 121   FreePool (FdtDevicePath);
 122
 123   // If we got here we do a confused face because BootLinuxFdt returned,
 124   // reporting success.
 125   DEBUG ((EFI_D_ERROR, "WARNING: BdsBootLinuxFdt returned EFI_SUCCESS.\n"));
 126   return EFI_SUCCESS;
 127 }