Esempio n. 1
0
/**
  Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit
  value, followed a  bitwise inclusive OR with another 8-bit value.

  Reads the 8-bit PCI configuration register specified by Address, performs a
  bitwise AND between the read result and the value specified by AndData,
  performs a bitwise inclusive OR between the result of the AND operation and
  the value specified by OrData, and writes the result to the 8-bit PCI
  configuration register specified by Address. The value written to the PCI
  configuration register is returned. This function must guarantee that all PCI
  read and write operations are serialized.

  If Address > 0x0FFFFFFF, then ASSERT().

  @param  Address Address that encodes the PCI Bus, Device, Function and
                  Register.
  @param  AndData The value to AND with the PCI configuration register.
  @param  OrData  The value to OR with the result of the AND operation.

  @return The value written back to the PCI configuration register.

**/
UINT8
EFIAPI
PciExpressAndThenOr8 (
  IN      UINTN                     Address,
  IN      UINT8                     AndData,
  IN      UINT8                     OrData
  )
{
  ASSERT_INVALID_PCI_ADDRESS (Address);
  return MmioAndThenOr8 (
           (UINTN) GetPciExpressBaseAddress () + Address,
           AndData,
           OrData
           );
}
Esempio n. 2
0
/**
  Perform flash write operation with progress indicator.  The start and end
  completion percentage values are passed into this function.  If the requested
  flash write operation is broken up, then completion percentage between the
  start and end values may be passed to the provided Progress function.  The
  caller of this function is required to call the Progress function for the
  start and end completion percentage values.  This allows the Progress,
  StartPercentage, and EndPercentage parameters to be ignored if the requested
  flash write operation can not be broken up

  @param[in] FirmwareType      The type of firmware.
  @param[in] FlashAddress      The address of flash device to be accessed.
  @param[in] FlashAddressType  The type of flash device address.
  @param[in] Buffer            The pointer to the data buffer.
  @param[in] Length            The length of data buffer in bytes.
  @param[in] Progress          A function used report the progress of the
                               firmware update.  This is an optional parameter
                               that may be NULL.
  @param[in] StartPercentage   The start completion percentage value that may
                               be used to report progress during the flash
                               write operation.
  @param[in] EndPercentage     The end completion percentage value that may
                               be used to report progress during the flash
                               write operation.

  @retval EFI_SUCCESS           The operation returns successfully.
  @retval EFI_WRITE_PROTECTED   The flash device is read only.
  @retval EFI_UNSUPPORTED       The flash device access is unsupported.
  @retval EFI_INVALID_PARAMETER The input parameter is not valid.
**/
EFI_STATUS
EFIAPI
PerformFlashWriteWithProgress (
  IN PLATFORM_FIRMWARE_TYPE                         FirmwareType,
  IN EFI_PHYSICAL_ADDRESS                           FlashAddress,
  IN FLASH_ADDRESS_TYPE                             FlashAddressType,
  IN VOID                                           *Buffer,
  IN UINTN                                          Length,
  IN EFI_FIRMWARE_MANAGEMENT_UPDATE_IMAGE_PROGRESS  Progress,        OPTIONAL
  IN UINTN                                          StartPercentage,
  IN UINTN                                          EndPercentage
  )
{
  EFI_STATUS            Status = EFI_SUCCESS;
  UINTN               Index;
  EFI_PHYSICAL_ADDRESS  Address;
  UINTN                 CountOfBlocks;
  EFI_TPL               OldTpl;
  BOOLEAN               FlashError;
  UINT8                 *Buf;
  UINTN                 LpcBaseAddress;
  UINT8                 Data8Or;
  UINT8                 Data8And;
  UINT8                 BiosCntl;

  Index             = 0;
  Address           = 0;
  CountOfBlocks     = 0;
  FlashError        = FALSE;
  Buf               = Buffer;

  DEBUG((DEBUG_INFO | DEBUG_ERROR, "PerformFlashWrite - 0x%x(%x) - 0x%x\n", (UINTN)FlashAddress, (UINTN)FlashAddressType, Length));
  if (FlashAddressType == FlashAddressTypeRelativeAddress) {
    FlashAddress = FlashAddress + mInternalFdAddress;
  }

  CountOfBlocks = (UINTN) (Length / BLOCK_SIZE);
  Address = FlashAddress;

  LpcBaseAddress = MmPciAddress (0,
                    DEFAULT_PCI_BUS_NUMBER_PCH,
                    PCI_DEVICE_NUMBER_PCH_LPC,
                    PCI_FUNCTION_NUMBER_PCH_LPC,
                    0
                    );
  BiosCntl = MmioRead8 (LpcBaseAddress + R_PCH_LPC_BIOS_CNTL);
  if ((BiosCntl & B_PCH_LPC_BIOS_CNTL_SMM_BWP) == B_PCH_LPC_BIOS_CNTL_SMM_BWP) {
    ///
    /// Clear SMM_BWP bit (D31:F0:RegDCh[5])
    ///
    Data8And  = (UINT8) ~B_PCH_LPC_BIOS_CNTL_SMM_BWP;
    Data8Or   = 0x00;

    MmioAndThenOr8 (
      LpcBaseAddress + R_PCH_LPC_BIOS_CNTL,
      Data8And,
      Data8Or
      );
    DEBUG((DEBUG_INFO, "PerformFlashWrite Clear SMM_BWP bit\n"));
  }

    //
    // Raise TPL to TPL_NOTIFY to block any event handler,
    // while still allowing RaiseTPL(TPL_NOTIFY) within
    // output driver during Print()
    //
    OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
    for (Index = 0; Index < CountOfBlocks; Index++) {
      if (Progress != NULL) {
        Progress (StartPercentage + ((Index * (EndPercentage - StartPercentage)) / CountOfBlocks));
      }
      //
      // Handle block based on address and contents.
      //
      if (!EFI_ERROR (InternalCompareBlock (Address, Buf))) {
        DEBUG((DEBUG_INFO, "Skipping block at 0x%lx (already programmed)\n", Address));
      } else {
        //
        // Make updating process uninterruptable,
        // so that the flash memory area is not accessed by other entities
        // which may interfere with the updating process
        //
        Status  = InternalEraseBlock (Address);
        if (EFI_ERROR(Status)) {
          gBS->RestoreTPL (OldTpl);
          FlashError = TRUE;
          goto Done;
        }
        Status = InternalWriteBlock (
                  Address,
                  Buf,
                  (UINT32)(Length > BLOCK_SIZE ? BLOCK_SIZE : Length)
                  );
        if (EFI_ERROR(Status)) {
          gBS->RestoreTPL (OldTpl);
          FlashError = TRUE;
          goto Done;
        }
      }

      //
      // Move to next block to update.
      //
      Address += BLOCK_SIZE;
      Buf += BLOCK_SIZE;
      if (Length > BLOCK_SIZE) {
        Length -= BLOCK_SIZE;
      } else {
        Length = 0;
      }
    }
    gBS->RestoreTPL (OldTpl);

Done:
  if ((BiosCntl & B_PCH_LPC_BIOS_CNTL_SMM_BWP) == B_PCH_LPC_BIOS_CNTL_SMM_BWP) {
    //
    // Restore original control setting
    //
    MmioWrite8 (LpcBaseAddress + R_PCH_LPC_BIOS_CNTL, BiosCntl);
  }

  if (Progress != NULL) {
    Progress (EndPercentage);
  }

  return EFI_SUCCESS;
}