diff options
Diffstat (limited to 'MdeModulePkg/Universal/FirmwareVolume')
| -rw-r--r-- | MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/FtwLite.inf | 12 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/Ia32/Ia32FtwMisc.c | 71 |
2 files changed, 75 insertions, 8 deletions
diff --git a/MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/FtwLite.inf b/MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/FtwLite.inf index 399febb..3ec4321 100644 --- a/MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/FtwLite.inf +++ b/MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/FtwLite.inf @@ -2,7 +2,7 @@ # Component description file for FtwLite module.
#
# This driver provides fault tolerant write capability for block devices.
-# Copyright (c) 2006 - 2008, Intel Corporation
+# Copyright (c) 2006 - 2007, Intel Corporation
#
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
@@ -49,10 +49,13 @@ [Sources.EBC]
Ia32/Ia32FtwMisc.c
+
[Packages]
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
+
+
[LibraryClasses]
UefiBootServicesTableLib
MemoryAllocationLib
@@ -69,6 +72,13 @@ gEfiFirmwareVolumeBlockProtocolGuid # PROTOCOL ALWAYS_CONSUMED
gEfiFaultTolerantWriteLiteProtocolGuid # PROTOCOL ALWAYS_PRODUCED
+[Protocols.IA32]
+ gEfiPciRootBridgeIoProtocolGuid # PROTOCOL ALWAYS_CONSUMED
+
+[Protocols.EBC]
+ gEfiPciRootBridgeIoProtocolGuid # PROTOCOL ALWAYS_CONSUMED
+
+
[Pcd.common]
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase
diff --git a/MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/Ia32/Ia32FtwMisc.c b/MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/Ia32/Ia32FtwMisc.c index 3893a6c..2c359b2 100644 --- a/MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/Ia32/Ia32FtwMisc.c +++ b/MdeModulePkg/Universal/FirmwareVolume/FaultTolerantWriteDxe/Ia32/Ia32FtwMisc.c @@ -35,7 +35,51 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. /**
- Get swap state.
+ Read PCI register value.
+ This is a internal function.
+
+
+ @param Offset Offset of the register
+
+ @return The pci register value.
+
+**/
+UINT32
+ReadPciRegister (
+ IN UINT32 Offset
+ )
+{
+ EFI_STATUS Status;
+ UINT32 Value;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
+
+ Value = 0;
+ Status = gBS->LocateProtocol (&gEfiPciRootBridgeIoProtocolGuid, NULL, (VOID **) &PciRootBridgeIo);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "FtwLite: Locate PCI root bridge io protocol - %r", Status));
+ return 0;
+ }
+
+ Status = PciRootBridgeIo->Pci.Read (
+ PciRootBridgeIo,
+ EfiPciWidthUint32,
+ EFI_PCI_ADDRESS (
+ LPC_BUS_NUMBER,
+ LPC_DEVICE_NUMBER,
+ LPC_IF,
+ Offset
+ ),
+ 1,
+ &Value
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+/**
+
+ Get swap state
This is a internal function.
@@ -51,13 +95,10 @@ GetSwapState ( OUT BOOLEAN *SwapState
)
{
- UINT32 Value;
- Value = PciRead32(EFI_PCI_ADDRESS (LPC_BUS_NUMBER, LPC_DEVICE_NUMBER, LPC_IF, GEN_STATUS))
-
//
// Top swap status is 13 bit
//
- *SwapState = (BOOLEAN) ((Value & TOP_SWAP_BIT) != 0);
+ *SwapState = (BOOLEAN) ((ReadPciRegister (GEN_STATUS) & TOP_SWAP_BIT) != 0);
return EFI_SUCCESS;
}
@@ -90,7 +131,7 @@ SetSwapState ( //
// Top-Swap bit (bit 13, D31: F0, Offset D4h)
//
- GenStatus = PciRead32(EFI_PCI_ADDRESS (LPC_BUS_NUMBER, LPC_DEVICE_NUMBER, LPC_IF, GEN_STATUS));
+ GenStatus = ReadPciRegister (GEN_STATUS);
//
// Set 13 bit, according to input NewSwapState
@@ -101,10 +142,26 @@ SetSwapState ( GenStatus &= ~TOP_SWAP_BIT;
}
+ Status = gBS->LocateProtocol (&gEfiPciRootBridgeIoProtocolGuid, NULL, (VOID **) &PciRootBridgeIo);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "FtwLite: Locate PCI root bridge io protocol - %r", Status));
+ return Status;
+ }
//
// Write back the GenStatus register
//
- PciWrite32(EFI_PCI_ADDRESS (LPC_BUS_NUMBER, LPC_DEVICE_NUMBER, LPC_IF, GEN_STATUS), GenStatus);
+ Status = PciRootBridgeIo->Pci.Write (
+ PciRootBridgeIo,
+ EfiPciWidthUint32,
+ EFI_PCI_ADDRESS (
+ LPC_BUS_NUMBER,
+ LPC_DEVICE_NUMBER,
+ LPC_IF,
+ GEN_STATUS
+ ),
+ 1,
+ &GenStatus
+ );
DEBUG_CODE_BEGIN ();
if (TopSwap) {
|