971a2d520e
Replace the elaborate but awkward handling of FDT images using device paths and string PCDs initialized to 128 spaces with a simple scheme involving a set of builtin DTBs and a bit of runtime logic to select between them. This is sufficient for ordinary use, which makes it more suitable as reference code. Note that overriding the DTB presented to the OS can easily be done with a UEFI application that simply installs a new DTB image under the existing FDT configuration table GUID. For this module, this simply involves removing all code that is involved in deciding which platform we are running on, and for reasoning about FDT device paths. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org> Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/** @file
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Copyright (c) 2013-2015, ARM Ltd. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiDxe.h>
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#include <Library/ArmShellCmdLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/VirtioMmioDeviceLib.h>
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#include <VExpressMotherBoard.h>
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#define ARM_FVP_BASE_VIRTIO_BLOCK_BASE 0x1c130000
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#pragma pack(1)
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typedef struct {
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VENDOR_DEVICE_PATH Vendor;
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EFI_DEVICE_PATH_PROTOCOL End;
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} VIRTIO_BLK_DEVICE_PATH;
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#pragma pack()
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VIRTIO_BLK_DEVICE_PATH mVirtioBlockDevicePath =
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{
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{
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{
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HARDWARE_DEVICE_PATH,
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HW_VENDOR_DP,
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{
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(UINT8)( sizeof(VENDOR_DEVICE_PATH) ),
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(UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8)
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}
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},
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EFI_CALLER_ID_GUID,
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},
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{
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END_DEVICE_PATH_TYPE,
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END_ENTIRE_DEVICE_PATH_SUBTYPE,
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{
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sizeof (EFI_DEVICE_PATH_PROTOCOL),
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0
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}
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}
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};
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/**
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* Generic UEFI Entrypoint for 'ArmFvpDxe' driver
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* See UEFI specification for the details of the parameters
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*/
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EFI_STATUS
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EFIAPI
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ArmFvpInitialise (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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Status = gBS->InstallProtocolInterface (&ImageHandle,
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&gEfiDevicePathProtocolGuid, EFI_NATIVE_INTERFACE,
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&mVirtioBlockDevicePath);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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// Declare the Virtio BlockIo device
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Status = VirtioMmioInstallDevice (ARM_FVP_BASE_VIRTIO_BLOCK_BASE, ImageHandle);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "ArmFvpDxe: Failed to install Virtio block device\n"));
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}
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// Install dynamic Shell command to run baremetal binaries.
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Status = ShellDynCmdRunAxfInstall (ImageHandle);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "ArmFvpDxe: Failed to install ShellDynCmdRunAxf\n"));
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}
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return Status;
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}
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