ArmPlatformPkg/ArmFvpDxe: Added Virtio Block support

Right now the ARM Platform driver does not do much, but
I expect to move most platform specific code into platform
specific driver in the future.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>

v5:
- ensure / document that the VIRTIO_BLK_DEVICE_PATH structure must be
  packed
- fix whitespace damage in definition of "mVirtioBlockDevicePath"
- the platform driver is added to all platform DSC and FDF files in the
  previous patch; this patch focuses on virtio only

Change-Id: I3505bfc5b31085b8017bd9e6895a155bd7a2eee9
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-By: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14981 6f19259b-4bc3-4df7-8a09-765794883524

2 files changed, 53 insertions, 1 deletions

diff --git a/ArmPlatformPkg/ArmVExpressPkg/ArmFvpDxe/ArmFvpDxe.c b/ArmPlatformPkg/ArmVExpressPkg/ArmFvpDxe/ArmFvpDxe.c
index 527a5b6731..15b5f429a9 100644
--- a/ArmPlatformPkg/ArmVExpressPkg/ArmFvpDxe/ArmFvpDxe.c
+++ b/ArmPlatformPkg/ArmVExpressPkg/ArmFvpDxe/ArmFvpDxe.c
@@ -13,6 +13,41 @@
 **/
 
 #include <Library/UefiLib.h>
+#include <Library/VirtioMmioDeviceLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#define ARM_FVP_BASE_VIRTIO_BLOCK_BASE    0x1c130000
+
+#pragma pack(1)
+typedef struct {
+  VENDOR_DEVICE_PATH                  Vendor;
+  EFI_DEVICE_PATH_PROTOCOL            End;
+} VIRTIO_BLK_DEVICE_PATH;
+#pragma pack()
+
+VIRTIO_BLK_DEVICE_PATH mVirtioBlockDevicePath =
+{
+  {
+    {
+      HARDWARE_DEVICE_PATH,
+      HW_VENDOR_DP,
+      {
+        (UINT8)( sizeof(VENDOR_DEVICE_PATH) ),
+        (UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8)
+      }
+    },
+    EFI_CALLER_ID_GUID,
+  },
+  {
+    END_DEVICE_PATH_TYPE,
+    END_ENTIRE_DEVICE_PATH_SUBTYPE,
+    {
+      sizeof (EFI_DEVICE_PATH_PROTOCOL),
+      0
+    }
+  }
+};
 
 EFI_STATUS
 EFIAPI
@@ -21,6 +56,20 @@ ArmFvpInitialise (
   IN EFI_SYSTEM_TABLE   *SystemTable
   )
 {
+  EFI_STATUS              Status;
+
+  Status = gBS->InstallProtocolInterface (&ImageHandle,
+                 &gEfiDevicePathProtocolGuid, EFI_NATIVE_INTERFACE,
+                 &mVirtioBlockDevicePath);
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  // Declare the Virtio BlockIo device
+  Status = VirtioMmioInstallDevice (ARM_FVP_BASE_VIRTIO_BLOCK_BASE, ImageHandle);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((EFI_D_ERROR, "ArmFvpDxe: Failed to install Virtio block device\n"));
+  }
 
-  return EFI_SUCCESS;
+  return Status;
 }
diff --git a/ArmPlatformPkg/ArmVExpressPkg/ArmFvpDxe/ArmFvpDxe.inf b/ArmPlatformPkg/ArmVExpressPkg/ArmFvpDxe/ArmFvpDxe.inf
index e39e6b6b53..893fd8d41d 100644
--- a/ArmPlatformPkg/ArmVExpressPkg/ArmFvpDxe/ArmFvpDxe.inf
+++ b/ArmPlatformPkg/ArmVExpressPkg/ArmFvpDxe/ArmFvpDxe.inf
@@ -26,7 +26,10 @@
 [Packages]
   MdePkg/MdePkg.dec
   ArmPlatformPkg/ArmPlatformPkg.dec
+  OvmfPkg/OvmfPkg.dec
 
 [LibraryClasses]
   UefiDriverEntryPoint
   UefiBootServicesTableLib
+  VirtioMmioDeviceLib
+  BaseMemoryLib