1767877a31
In preparation for introducing an SMM interface to this driver, move the following traits to separate files, so that we can replace them in the new SMM INF file: - Protocol installations. The SMM driver will install protocol interfaces in the SMM protocol database, using SMM services. - Virtual address change handler and pointer conversions. SMM drivers run with physical mappings and pointers must not be converted. There are further restrictions and changes for an SMM driver, but the rest of the code either complies with those already, or will handle the changes transparently. For example: - SMM drivers have access to both UEFI and SMM protocols in their entry points (see the PI spec 1.4, "1.7 SMM Driver Initialization"), - MemoryAllocationLib has an SMM instance that serves allocation requests with the gSmst->SmmAllocatePool() service transparently, allocating runtime-marked SMRAM. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18671 6f19259b-4bc3-4df7-8a09-765794883524
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/** @file
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OVMF support for QEMU system firmware flash device
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Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __QEMU_FLASH_H__
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#define __QEMU_FLASH_H__
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#include <Protocol/FirmwareVolumeBlock.h>
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extern UINT8 *mFlashBase;
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/**
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Read from QEMU Flash
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@param[in] Lba The starting logical block index to read from.
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@param[in] Offset Offset into the block at which to begin reading.
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@param[in] NumBytes On input, indicates the requested read size. On
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output, indicates the actual number of bytes read
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@param[in] Buffer Pointer to the buffer to read into.
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**/
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EFI_STATUS
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QemuFlashRead (
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN UINTN *NumBytes,
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IN UINT8 *Buffer
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);
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/**
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Write to QEMU Flash
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@param[in] Lba The starting logical block index to write to.
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@param[in] Offset Offset into the block at which to begin writing.
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@param[in] NumBytes On input, indicates the requested write size. On
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output, indicates the actual number of bytes written
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@param[in] Buffer Pointer to the data to write.
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**/
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EFI_STATUS
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QemuFlashWrite (
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN UINTN *NumBytes,
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IN UINT8 *Buffer
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);
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/**
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Erase a QEMU Flash block
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@param Lba The logical block index to erase.
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**/
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EFI_STATUS
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QemuFlashEraseBlock (
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IN EFI_LBA Lba
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);
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/**
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Initializes QEMU flash memory support
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@retval EFI_WRITE_PROTECTED The QEMU flash device is not present.
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@retval EFI_SUCCESS The QEMU flash device is supported.
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**/
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EFI_STATUS
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QemuFlashInitialize (
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VOID
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);
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VOID
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QemuFlashConvertPointers (
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VOID
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);
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#endif
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