diff options
Diffstat (limited to 'EdkModulePkg/Universal/FirmwareVolume/FaultTolerantWriteLite/Dxe/Ia32/Ia32FtwMisc.c')
| -rw-r--r-- | EdkModulePkg/Universal/FirmwareVolume/FaultTolerantWriteLite/Dxe/Ia32/Ia32FtwMisc.c | 403 |
1 files changed, 0 insertions, 403 deletions
diff --git a/EdkModulePkg/Universal/FirmwareVolume/FaultTolerantWriteLite/Dxe/Ia32/Ia32FtwMisc.c b/EdkModulePkg/Universal/FirmwareVolume/FaultTolerantWriteLite/Dxe/Ia32/Ia32FtwMisc.c deleted file mode 100644 index 6425f29b2c..0000000000 --- a/EdkModulePkg/Universal/FirmwareVolume/FaultTolerantWriteLite/Dxe/Ia32/Ia32FtwMisc.c +++ /dev/null @@ -1,403 +0,0 @@ -/*++
-
-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
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-Module Name:
-
- Ia32FtwMisc.c
-
-Abstract:
-
- Ia32 platform related code to support FtwLite..
-
-Revision History
-
---*/
-
-
-#include <FtwLite.h>
-
-//
-// MACROs for boot block update
-//
-#define BOOT_BLOCK_BASE 0xFFFF0000
-
-//
-// (LPC -- D31:F0)
-//
-#define LPC_BUS_NUMBER 0x00
-#define LPC_DEVICE_NUMBER 0x1F
-#define LPC_IF 0xF0
-//
-// Top swap
-//
-#define GEN_STATUS 0xD4
-#define TOP_SWAP_BIT (1 << 13)
-
-STATIC
-UINT32
-ReadPciRegister (
- IN UINT32 Offset
- )
-/*++
-
-Routine Description:
-
- Read PCI register value.
-
-Arguments:
-
- Offset - Offset of the register
-
-Returns:
-
- The value.
-
---*/
-{
- 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;
-}
-
-STATIC
-EFI_STATUS
-GetSwapState (
- IN EFI_FTW_LITE_DEVICE *FtwLiteDevice,
- OUT BOOLEAN *SwapState
- )
-/*++
-
-Routine Description:
-
- Get swap state
-
-Arguments:
-
- FtwLiteDevice - Calling context
- SwapState - Swap state
-
-Returns:
-
- EFI_SUCCESS - State successfully got
-
---*/
-{
- //
- // Top swap status is 13 bit
- //
- *SwapState = (BOOLEAN) ((ReadPciRegister (GEN_STATUS) & TOP_SWAP_BIT) != 0);
-
- return EFI_SUCCESS;
-}
-
-STATIC
-EFI_STATUS
-SetSwapState (
- IN EFI_FTW_LITE_DEVICE *FtwLiteDevice,
- IN BOOLEAN TopSwap
- )
-/*++
-
-Routine Description:
- Set swap state.
-
-Arguments:
- FtwLiteDevice - Indicates a pointer to the calling context.
- TopSwap - New swap state
-
-Returns:
- EFI_SUCCESS - The function completed successfully
-
-Note:
- the Top-Swap bit (bit 13, D31: F0, Offset D4h). Note that
- software will not be able to clear the Top-Swap bit until the system is
- rebooted without GNT[A]# being pulled down.
-
---*/
-{
- UINT32 GenStatus;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
- EFI_STATUS Status;
-
- //
- // Top-Swap bit (bit 13, D31: F0, Offset D4h)
- //
- GenStatus = ReadPciRegister (GEN_STATUS);
-
- //
- // Set 13 bit, according to input NewSwapState
- //
- if (TopSwap) {
- GenStatus |= TOP_SWAP_BIT;
- } else {
- 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
- //
- 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) {
- DEBUG ((EFI_D_ERROR, "SAR: Set top swap\n"));
- } else {
- DEBUG ((EFI_D_ERROR, "SAR: Clear top swap\n"));
- }
- DEBUG_CODE_END ();
-
- return EFI_SUCCESS;
-}
-
-BOOLEAN
-IsBootBlock (
- EFI_FTW_LITE_DEVICE *FtwLiteDevice,
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock,
- EFI_LBA Lba
- )
-/*++
-
-Routine Description:
-
- Check whether the block is a boot block.
-
-Arguments:
-
- FtwLiteDevice - Calling context
- FvBlock - Fvb protocol instance
- Lba - Lba value
-
-Returns:
-
- Is a boot block or not
-
---*/
-{
- EFI_STATUS Status;
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *BootFvb;
-
- Status = GetFvbByAddress (BOOT_BLOCK_BASE, &BootFvb);
- if (EFI_ERROR (Status)) {
- return FALSE;
- }
- //
- // Compare the Fvb
- //
- return (BOOLEAN) (FvBlock == BootFvb);
-}
-
-EFI_STATUS
-FlushSpareBlockToBootBlock (
- EFI_FTW_LITE_DEVICE *FtwLiteDevice
- )
-/*++
-
-Routine Description:
- Copy the content of spare block to a boot block. Size is FTW_BLOCK_SIZE.
- Spare block is accessed by FTW backup FVB protocol interface. LBA is
- FtwLiteDevice->FtwSpareLba.
- Boot block is accessed by BootFvb protocol interface. LBA is 0.
-
-Arguments:
- FtwLiteDevice - The private data of FTW_LITE driver
-
-Returns:
- EFI_SUCCESS - Spare block content is copied to boot block
- EFI_INVALID_PARAMETER - Input parameter error
- EFI_OUT_OF_RESOURCES - Allocate memory error
- EFI_ABORTED - The function could not complete successfully
-
-Notes:
- FTW will do extra work on boot block update.
- FTW should depend on a protocol of EFI_ADDRESS_RANGE_SWAP_PROTOCOL,
- which is produced by a chipset driver.
-
- FTW updating boot block steps:
- 1. Erase top swap block (0xFFFE-0xFFFEFFFF) and write data to it ready
- 2. Read data from top swap block to memory buffer
- 3. SetSwapState(EFI_SWAPPED)
- 4. Erasing boot block (0xFFFF-0xFFFFFFFF)
- 5. Programming boot block until the boot block is ok.
- 6. SetSwapState(UNSWAPPED)
-
- Notes:
- 1. Since the SwapState bit is saved in CMOS, FTW can restore and continue
- even in the scenario of power failure.
- 2. FTW shall not allow to update boot block when battery state is error.
-
---*/
-{
- EFI_STATUS Status;
- UINTN Length;
- UINT8 *Buffer;
- UINTN Count;
- UINT8 *Ptr;
- UINTN Index;
- BOOLEAN TopSwap;
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *BootFvb;
- EFI_LBA BootLba;
-
- //
- // Allocate a memory buffer
- //
- Length = FtwLiteDevice->SpareAreaLength;
- Buffer = AllocatePool (Length);
- if (Buffer == NULL) {
- }
- //
- // Get TopSwap bit state
- //
- Status = GetSwapState (FtwLiteDevice, &TopSwap);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "FtwLite: Get Top Swapped status - %r\n", Status));
- FreePool (Buffer);
- return EFI_ABORTED;
- }
-
- if (TopSwap) {
- //
- // Get FVB of current boot block
- //
- Status = GetFvbByAddress (FtwLiteDevice->SpareAreaAddress + FTW_BLOCK_SIZE, &BootFvb);
- if (EFI_ERROR (Status)) {
- FreePool (Buffer);
- return Status;
- }
- //
- // Read data from current boot block
- //
- BootLba = 0;
- Ptr = Buffer;
- for (Index = 0; Index < FtwLiteDevice->NumberOfSpareBlock; Index += 1) {
- Count = FtwLiteDevice->SizeOfSpareBlock;
- Status = BootFvb->Read (
- BootFvb,
- BootLba + Index,
- 0,
- &Count,
- Ptr
- );
- if (EFI_ERROR (Status)) {
- FreePool (Buffer);
- return Status;
- }
-
- Ptr += Count;
- }
-
- } else {
- //
- // Read data from spare block
- //
- Ptr = Buffer;
- for (Index = 0; Index < FtwLiteDevice->NumberOfSpareBlock; Index += 1) {
- Count = FtwLiteDevice->SizeOfSpareBlock;
- Status = FtwLiteDevice->FtwBackupFvb->Read (
- FtwLiteDevice->FtwBackupFvb,
- FtwLiteDevice->FtwSpareLba + Index,
- 0,
- &Count,
- Ptr
- );
- if (EFI_ERROR (Status)) {
- FreePool (Buffer);
- return Status;
- }
-
- Ptr += Count;
- }
- //
- // Set TopSwap bit
- //
- Status = SetSwapState (FtwLiteDevice, TRUE);
- DEBUG ((EFI_D_ERROR, "FtwLite: Set Swap State - %r\n", Status));
- ASSERT_EFI_ERROR (Status);
- }
- //
- // Erase boot block. After setting TopSwap bit, it's spare block now!
- //
- Status = FtwEraseSpareBlock (FtwLiteDevice);
- if (EFI_ERROR (Status)) {
- FreePool (Buffer);
- return EFI_ABORTED;
- }
- //
- // Write memory buffer to currenet spare block
- //
- Ptr = Buffer;
- for (Index = 0; Index < FtwLiteDevice->NumberOfSpareBlock; Index += 1) {
- Count = FtwLiteDevice->SizeOfSpareBlock;
- Status = FtwLiteDevice->FtwBackupFvb->Write (
- FtwLiteDevice->FtwBackupFvb,
- FtwLiteDevice->FtwSpareLba + Index,
- 0,
- &Count,
- Ptr
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_FTW_LITE, "FtwLite: FVB Write boot block - %r\n", Status));
- FreePool (Buffer);
- return Status;
- }
-
- Ptr += Count;
- }
-
- FreePool (Buffer);
-
- //
- // Clear TopSwap bit
- //
- Status = SetSwapState (FtwLiteDevice, FALSE);
- DEBUG ((EFI_D_ERROR, "FtwLite: Clear Swap State - %r\n", Status));
- ASSERT_EFI_ERROR (Status);
-
- return EFI_SUCCESS;
-}
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