ArmPlatformPkg/ArmJunoPkg: Added ACPI support

[mirror_edk2.git] / ArmPlatformPkg / ArmJunoPkg / Drivers / ArmJunoDxe / ArmJunoDxe.c

/** @file\r
*\r
*  Copyright (c) 2013-2014, ARM Limited. All rights reserved.\r
*\r
*  This program and the accompanying materials\r
*  are licensed and made available under the terms and conditions of the BSD License\r
*  which accompanies this distribution.  The full text of the license may be found at\r
*  http://opensource.org/licenses/bsd-license.php\r
*\r
*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
*\r
**/\r
\r
#include "ArmJunoDxeInternal.h"\r
#include <Library/ArmShellCmdLib.h>\r
\r
// This GUID must match the FILE_GUID in ArmPlatformPkg/ArmJunoPkg/AcpiTables/AcpiTables.inf\r
STATIC CONST EFI_GUID mJunoAcpiTableFile = { 0xa1dd808e, 0x1e95, 0x4399, { 0xab, 0xc0, 0x65, 0x3c, 0x82, 0xe8, 0x53, 0x0c } };\r
\r
EFI_STATUS\r
EFIAPI\r
ArmJunoEntryPoint (\r
  IN EFI_HANDLE         ImageHandle,\r
  IN EFI_SYSTEM_TABLE   *SystemTable\r
  )\r
{\r
  EFI_STATUS           Status;\r
  EFI_PHYSICAL_ADDRESS HypBase;\r
\r
  Status = PciEmulationEntryPoint ();\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // If a hypervisor has been declared then we need to make sure its region is protected at runtime\r
  //\r
  // Note: This code is only a workaround for our dummy hypervisor (ArmPkg/Extra/AArch64ToAArch32Shim/)\r
  //       that does not set up (yet) the stage 2 translation table to hide its own memory to EL1.\r
  //\r
  if (FixedPcdGet32 (PcdHypFvSize) != 0) {\r
    // Ensure the hypervisor region is strictly contained into a EFI_PAGE_SIZE-aligned region.\r
    // The memory must be a multiple of EFI_PAGE_SIZE to ensure we do not reserve more memory than the hypervisor itself.\r
    // A UEFI Runtime region size granularity cannot be smaller than EFI_PAGE_SIZE. If the hypervisor size is not rounded\r
    // to this size then there is a risk some non-runtime memory could be visible to the OS view.\r
    if (((FixedPcdGet32 (PcdHypFvSize) & EFI_PAGE_MASK) == 0) && ((FixedPcdGet32 (PcdHypFvBaseAddress) & EFI_PAGE_MASK) == 0)) {\r
      // The memory needs to be declared because the DXE core marked it as reserved and removed it from the memory space\r
      // as it contains the Firmware.\r
      Status = gDS->AddMemorySpace (\r
          EfiGcdMemoryTypeSystemMemory,\r
          FixedPcdGet32 (PcdHypFvBaseAddress), FixedPcdGet32 (PcdHypFvSize),\r
          EFI_MEMORY_WB | EFI_MEMORY_RUNTIME\r
          );\r
      if (!EFI_ERROR (Status)) {\r
        // We allocate the memory to ensure it is marked as runtime memory\r
        HypBase = FixedPcdGet32 (PcdHypFvBaseAddress);\r
        Status = gBS->AllocatePages (AllocateAddress, EfiRuntimeServicesCode,\r
                                     EFI_SIZE_TO_PAGES (FixedPcdGet32 (PcdHypFvSize)), &HypBase);\r
      }\r
    } else {\r
      // The hypervisor must be contained into a EFI_PAGE_SIZE-aligned region and its size must also be aligned\r
      // on a EFI_PAGE_SIZE boundary (ie: 4KB).\r
      Status = EFI_UNSUPPORTED;\r
      ASSERT_EFI_ERROR (Status);\r
    }\r
\r
    if (EFI_ERROR (Status)) {\r
      return Status;\r
    }\r
  }\r
\r
  // Install dynamic Shell command to run baremetal binaries.\r
  Status = ShellDynCmdRunAxfInstall (ImageHandle);\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((EFI_D_ERROR, "ArmJunoDxe: Failed to install ShellDynCmdRunAxf\n"));\r
  }\r
\r
  // Try to install the ACPI Tables\r
  Status = LocateAndInstallAcpiFromFv (&mJunoAcpiTableFile);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r

  // Try to install the Flat Device Tree (FDT). This function actually installs the\r
  // UEFI Driver Binding Protocol.\r
  Status = JunoFdtInstall (ImageHandle);\r
\r
  return Status;\r
}\r