diff options
Diffstat (limited to 'Core/CORE_PEI/CORE_PEI_FRAMEWORK/Hob.c')
| -rw-r--r-- | Core/CORE_PEI/CORE_PEI_FRAMEWORK/Hob.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/Core/CORE_PEI/CORE_PEI_FRAMEWORK/Hob.c b/Core/CORE_PEI/CORE_PEI_FRAMEWORK/Hob.c new file mode 100644 index 0000000..cffbf6c --- /dev/null +++ b/Core/CORE_PEI/CORE_PEI_FRAMEWORK/Hob.c @@ -0,0 +1,198 @@ +/*++ + +Copyright (c) 2004 - 2006, 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: + + Hob.c + +Abstract: + + EFI PEI Core HOB services + +--*/ + +#include "Tiano.h" +#include "PeiCore.h" +#include "PeiLib.h" + +EFI_STATUS +EFIAPI +PeiGetHobList ( + IN EFI_PEI_SERVICES **PeiServices, + IN OUT VOID **HobList + ) +/*++ + +Routine Description: + + Gets the pointer to the HOB List. + +Arguments: + + PeiServices - The PEI core services table. + HobList - Pointer to the HOB List. + +Returns: + + EFI_SUCCESS - Get the pointer of HOB List + EFI_NOT_AVAILABLE_YET - the HOB List is not yet published + EFI_INVALID_PARAMETER - HobList is NULL (in debug mode) + +--*/ +{ + PEI_CORE_INSTANCE *PrivateData; + + + // + // Only check this parameter in debug mode + // + + PEI_DEBUG_CODE ( + if (HobList == NULL) { + return EFI_INVALID_PARAMETER; + } + ) + + PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices); + + *HobList = PrivateData->HobList.Raw; + + + return EFI_SUCCESS; +} + + +EFI_STATUS +EFIAPI +PeiCreateHob ( + IN EFI_PEI_SERVICES **PeiServices, + IN UINT16 Type, + IN UINT16 Length, + IN OUT VOID **Hob + ) +/*++ + +Routine Description: + + Add a new HOB to the HOB List. + +Arguments: + + PeiServices - The PEI core services table. + Type - Type of the new HOB. + Length - Length of the new HOB to allocate. + Hob - Pointer to the new HOB. + +Returns: + + Status - EFI_SUCCESS + - EFI_INVALID_PARAMETER if Hob is NULL + - EFI_NOT_AVAILABLE_YET if HobList is still not available. + - EFI_OUT_OF_RESOURCES if there is no more memory to grow the Hoblist. + +--*/ +{ + EFI_STATUS Status; + EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob; + EFI_HOB_GENERIC_HEADER *HobEnd; + EFI_PHYSICAL_ADDRESS FreeMemory; + + + Status = PeiGetHobList (PeiServices, Hob); + if (EFI_ERROR(Status)) { + return Status; + } + + HandOffHob = *Hob; + + Length = (UINT16)((Length + 0x7) & (~0x7)); + + FreeMemory = HandOffHob->EfiFreeMemoryTop - + HandOffHob->EfiFreeMemoryBottom; + + if (FreeMemory < Length) { + PEI_DEBUG_CODE ( + { + PEI_DEBUG ((PeiServices, EFI_D_ERROR, "PeiCreateHob fail: Length - 0x%08x\n", (UINTN)Length)); + PEI_DEBUG ((PeiServices, EFI_D_ERROR, " FreeMemoryTop - 0x%08x\n", (UINTN)HandOffHob->EfiFreeMemoryTop)); + PEI_DEBUG ((PeiServices, EFI_D_ERROR, " FreeMemoryBottom - 0x%08x\n", (UINTN)HandOffHob->EfiFreeMemoryBottom)); + } + ) + return EFI_OUT_OF_RESOURCES; + } + + *Hob = (VOID*) (UINTN) HandOffHob->EfiEndOfHobList; + ((EFI_HOB_GENERIC_HEADER*) *Hob)->HobType = Type; + ((EFI_HOB_GENERIC_HEADER*) *Hob)->HobLength = Length; + ((EFI_HOB_GENERIC_HEADER*) *Hob)->Reserved = 0; + + HobEnd = (EFI_HOB_GENERIC_HEADER*) ((UINTN) *Hob + Length); + HandOffHob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd; + + HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST; + HobEnd->HobLength = sizeof(EFI_HOB_GENERIC_HEADER); + HobEnd->Reserved = 0; + HobEnd++; + HandOffHob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd; + + + return EFI_SUCCESS; +} + + +EFI_STATUS +PeiCoreBuildHobHandoffInfoTable ( + IN EFI_BOOT_MODE BootMode, + IN EFI_PHYSICAL_ADDRESS MemoryBegin, + IN UINT64 MemoryLength + ) +/*++ + +Routine Description: + + Builds a Handoff Information Table HOB + +Arguments: + + BootMode - Current Bootmode + MemoryBegin - Start Memory Address. + MemoryLength - Length of Memory. + +Returns: + + EFI_SUCCESS + +--*/ +{ + EFI_HOB_HANDOFF_INFO_TABLE *Hob; + EFI_HOB_GENERIC_HEADER *HobEnd; + + Hob = (VOID *)(UINTN)MemoryBegin; + HobEnd = (EFI_HOB_GENERIC_HEADER*) (Hob+1); + Hob->Header.HobType = EFI_HOB_TYPE_HANDOFF; + Hob->Header.HobLength = sizeof(EFI_HOB_HANDOFF_INFO_TABLE); + Hob->Header.Reserved = 0; + + HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST; + HobEnd->HobLength = sizeof(EFI_HOB_GENERIC_HEADER); + HobEnd->Reserved = 0; + + Hob->Version = EFI_HOB_HANDOFF_TABLE_VERSION; + Hob->BootMode = BootMode; + + Hob->EfiMemoryTop = MemoryBegin + MemoryLength; + Hob->EfiMemoryBottom = MemoryBegin; + Hob->EfiFreeMemoryTop = MemoryBegin + MemoryLength; + Hob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) (HobEnd+1); + Hob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd; + + return EFI_SUCCESS; +} |