1 files changed, 132 insertions, 0 deletions
diff --git a/gnu-efi/gnu-efi-3.0/lib/hw.c b/gnu-efi/gnu-efi-3.0/lib/hw.c
new file mode 100644
index 0000000..3d651ad
--- /dev/null
+++ b/gnu-efi/gnu-efi-3.0/lib/hw.c
@@ -0,0 +1,132 @@
+/*++
+
+Copyright (c) 1998  Intel Corporation
+
+Module Name:
+
+    hw.c
+
+Abstract:
+
+    Debug library functions for Hardware IO access
+
+
+
+Revision History
+
+--*/
+
+#include "lib.h"
+
+
+EFI_STATUS
+InitializeGlobalIoDevice (
+        IN  EFI_DEVICE_PATH             *DevicePath,
+        IN  EFI_GUID                    *Protocol,
+        IN  CHAR8                       *ErrorStr,
+        OUT EFI_DEVICE_IO_INTERFACE     **GlobalIoFncs 
+        )
+/*++
+
+Routine Description:
+
+    Check to see if DevicePath exists for a given Protocol. Return Error if it 
+    exists. Return GlobalIoFuncs set match the DevicePath
+
+  Arguments:
+
+    DevicePath      - to operate on
+    Protocol        - to check the DevicePath against
+    ErrorStr        - ASCII string to display on error
+    GlobalIoFncs    - Returned with DeviceIoProtocol for the DevicePath
+
+Returns:
+
+    Pass or Fail based on  wether GlobalIoFncs where found
+
+--*/
+{
+    EFI_STATUS      Status;
+    EFI_HANDLE      Handle;
+
+    //
+    // Check to see if this device path already has Protocol on it.
+    //  if so we are loading recursivly and should exit with an error
+    //
+    Status = uefi_call_wrapper(BS->LocateDevicePath, 3, Protocol, &DevicePath, &Handle);
+    if (!EFI_ERROR(Status)) {
+        DEBUG ((D_INIT, "Device Already Loaded for %a device\n", ErrorStr));
+        return EFI_LOAD_ERROR;
+    }
+
+    Status = uefi_call_wrapper(BS->LocateDevicePath, 3, &DeviceIoProtocol, &DevicePath, &Handle);
+    if (!EFI_ERROR(Status)) {
+        Status = uefi_call_wrapper(BS->HandleProtocol, 3, Handle, &DeviceIoProtocol, (VOID*)GlobalIoFncs);
+    }
+
+    ASSERT (!EFI_ERROR(Status));
+    return Status;
+}
+
+UINT32 
+ReadPort (
+        IN  EFI_DEVICE_IO_INTERFACE     *GlobalIoFncs, 
+        IN  EFI_IO_WIDTH                Width,
+        IN  UINTN                       Port
+        )
+{
+    UINT32       Data;
+    EFI_STATUS  Status;
+
+    Status = uefi_call_wrapper(GlobalIoFncs->Io.Read, 5, GlobalIoFncs, Width, (UINT64)Port, 1, &Data);
+    ASSERT(!EFI_ERROR(Status));
+    return Data;
+}
+
+UINT32 
+WritePort (
+        IN  EFI_DEVICE_IO_INTERFACE     *GlobalIoFncs, 
+        IN  EFI_IO_WIDTH                Width,
+        IN  UINTN                       Port,
+        IN  UINTN                       Data
+        )
+{
+    EFI_STATUS  Status;
+
+    Status = uefi_call_wrapper(GlobalIoFncs->Io.Write, 5, GlobalIoFncs, Width, (UINT64)Port, 1, &Data);
+    ASSERT(!EFI_ERROR(Status));
+    return (UINT32)Data;
+}
+
+UINT32 
+ReadPciConfig (
+        IN  EFI_DEVICE_IO_INTERFACE     *GlobalIoFncs, 
+        IN  EFI_IO_WIDTH                Width,
+        IN  UINTN                       Address
+        )
+{
+    UINT32       Data;
+    EFI_STATUS  Status;
+
+    Status = uefi_call_wrapper(GlobalIoFncs->Pci.Read, 5, GlobalIoFncs, Width, (UINT64)Address, 1, &Data);
+    ASSERT(!EFI_ERROR(Status));
+    return Data;
+}
+
+UINT32 
+WritePciConfig (
+        IN  EFI_DEVICE_IO_INTERFACE     *GlobalIoFncs, 
+        IN  EFI_IO_WIDTH                Width,
+        IN  UINTN                       Address,
+        IN  UINTN                       Data
+        )
+{
+    EFI_STATUS  Status;
+
+    Status = uefi_call_wrapper(GlobalIoFncs->Pci.Write, 5, GlobalIoFncs, Width, (UINT64)Address, 1, &Data);
+    ASSERT(!EFI_ERROR(Status));
+    return (UINT32)Data;
+}
+
+
+