mirror of https://github.com/acidanthera/audk.git
124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
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/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this 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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Module Name:
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UnixFwh.c
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Abstract:
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PEIM to abstract construction of firmware volume in an Unix environment.
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Revision History
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--*/
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#include <FlashLayout.h>
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EFI_STATUS
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EFIAPI
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PeimInitializeUnixFwh (
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IN EFI_FFS_FILE_HEADER *FfsHeader,
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IN EFI_PEI_SERVICES **PeiServices
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)
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/*++
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Routine Description:
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Perform a call-back into the SEC simulator to get address of the Firmware Hub
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Arguments:
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FfsHeader - Ffs Header availible to every PEIM
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PeiServices - General purpose services available to every PEIM.
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Returns:
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None
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--*/
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{
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EFI_STATUS Status;
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EFI_PEI_PPI_DESCRIPTOR *PpiDescriptor;
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UNIX_FWH_PPI *FwhPpi;
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EFI_PHYSICAL_ADDRESS FdBase;
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EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
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UINT64 FdSize;
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UINTN Index;
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DEBUG ((EFI_D_ERROR, "Unix Firmware Volume PEIM Loaded\n"));
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//
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// Get the Fwh Information PPI
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//
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Status = (**PeiServices).LocatePpi (
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PeiServices,
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&gUnixFwhPpiGuid, // GUID
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0, // INSTANCE
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&PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
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(VOID **)&FwhPpi // PPI
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);
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ASSERT_EFI_ERROR (Status);
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Index = 0;
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do {
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//
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// Get information about all the FD's in the system
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//
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Status = FwhPpi->UnixFwh (Index, &FdBase, &FdSize);
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if (!EFI_ERROR (Status)) {
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//
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// Assume the FD starts with an FV header
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//
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FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) FdBase;
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//
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// Make an FV Hob for the first FV in the FD
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//
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BuildFvHob (FdBase, FvHeader->FvLength);
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if (Index == 0) {
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//
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// Assume the first FD was produced by the NT32.DSC
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// All these strange offests are needed to keep in
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// sync with the FlashMap and NT32.dsc file
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//
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BuildResourceDescriptorHob (
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EFI_RESOURCE_FIRMWARE_DEVICE,
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(EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE),
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FdBase,
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(FvHeader->FvLength + EFI_WINNT_RUNTIME_UPDATABLE_LENGTH + EFI_WINNT_FTW_SPARE_BLOCK_LENGTH)
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);
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//
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// Hard code the address of the spare block and variable services.
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// Assume it's a hard coded offset from FV0 in FD0.
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//
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FdBase = FdBase + EFI_WINNT_RUNTIME_UPDATABLE_OFFSET;
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FdSize = EFI_WINNT_RUNTIME_UPDATABLE_LENGTH + EFI_WINNT_FTW_SPARE_BLOCK_LENGTH;
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BuildFvHob (FdBase, FdSize);
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} else {
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//
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// For other FD's just map them in.
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//
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BuildResourceDescriptorHob (
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EFI_RESOURCE_FIRMWARE_DEVICE,
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(EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE),
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FdBase,
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FdSize
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);
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}
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}
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Index++;
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} while (!EFI_ERROR (Status));
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return Status;
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}
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