diff options
Diffstat (limited to 'src/vendorcode/intel/fsp/rangeley/srx/fsphob.c')
| -rw-r--r-- | src/vendorcode/intel/fsp/rangeley/srx/fsphob.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/src/vendorcode/intel/fsp/rangeley/srx/fsphob.c b/src/vendorcode/intel/fsp/rangeley/srx/fsphob.c new file mode 100644 index 0000000..4986d52 --- /dev/null +++ b/src/vendorcode/intel/fsp/rangeley/srx/fsphob.c @@ -0,0 +1,204 @@ +/****************************************************************************** + +Copyright (C) 2013, Intel Corporation + +Redistribution and use in source and binary forms, with or without modification, +are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. +* Redistributions in binary form must reproduce the above copyright notice, this + list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. +* Neither the name of Intel Corporation nor the names of its contributors may + be used to endorse or promote products derived from this software without + specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + THE POSSIBILITY OF SUCH DAMAGE. + + ******************************************************************************/ + +/*********************************************************************** + * + * fsphob.c + * + * HOB infrastructure code. + * + **********************************************************************/ +#include <string.h> + +#include "fsptypes.h" +#include "fsphob.h" + +// +// Pointer to the HOB should be initialized with the output of FSP INIT PARAMS +// +#ifndef __PRE_RAM__ +extern volatile void *FspHobListPtr; +#endif + +/** + Reads a 64-bit value from memory that may be unaligned. + + This function returns the 64-bit value pointed to by Buffer. The function + guarantees that the read operation does not produce an alignment fault. + + If the Buffer is NULL, then ASSERT(). + + @param Buffer Pointer to a 64-bit value that may be unaligned. + + @return The 64-bit value read from Buffer. + +**/ +UINT64 +EFIAPI +ReadUnaligned64 ( + CONST UINT64 *Buffer + ) +{ + ASSERT (Buffer != NULL); + + return *Buffer; +} + +/** + Compares two GUIDs. + + This function compares Guid1 to Guid2. If the GUIDs are identical then TRUE is returned. + If there are any bit differences in the two GUIDs, then FALSE is returned. + + If Guid1 is NULL, then ASSERT(). + If Guid2 is NULL, then ASSERT(). + + @param Guid1 A pointer to a 128 bit GUID. + @param Guid2 A pointer to a 128 bit GUID. + + @retval TRUE Guid1 and Guid2 are identical. + @retval FALSE Guid1 and Guid2 are not identical. + +**/ +BOOLEAN +EFIAPI +CompareGuid ( + CONST EFI_GUID *Guid1, + CONST EFI_GUID *Guid2 + ) +{ + UINT64 LowPartOfGuid1; + UINT64 LowPartOfGuid2; + UINT64 HighPartOfGuid1; + UINT64 HighPartOfGuid2; + + LowPartOfGuid1 = ReadUnaligned64 ((CONST UINT64*) Guid1); + LowPartOfGuid2 = ReadUnaligned64 ((CONST UINT64*) Guid2); + HighPartOfGuid1 = ReadUnaligned64 ((CONST UINT64*) Guid1 + 1); + HighPartOfGuid2 = ReadUnaligned64 ((CONST UINT64*) Guid2 + 1); + + return (BOOLEAN) (LowPartOfGuid1 == LowPartOfGuid2 && HighPartOfGuid1 == HighPartOfGuid2); +} + +/** + Returns the pointer to the HOB list. +**/ +VOID * +EFIAPI +GetHobList ( + VOID + ) +{ +#ifndef __PRE_RAM__ + ASSERT (FspHobListPtr != NULL); + return ((VOID *)FspHobListPtr); +#else + return ((VOID *)NULL); +#endif +} + +/** + Returns the next instance of a HOB type from the starting HOB. +**/ +VOID * +EFIAPI +GetNextHob ( + UINT16 Type, + CONST VOID *HobStart + ) +{ + EFI_PEI_HOB_POINTERS Hob; + + ASSERT (HobStart != NULL); + + Hob.Raw = (UINT8 *) HobStart; + // + // Parse the HOB list until end of list or matching type is found. + // + while (!END_OF_HOB_LIST (Hob)) { + if (Hob.Header->HobType == Type) { + return Hob.Raw; + } + Hob.Raw = GET_NEXT_HOB (Hob); + } + return NULL; +} + +/** + Returns the first instance of a HOB type among the whole HOB list. +**/ +VOID * +EFIAPI +GetFirstHob ( + UINT16 Type + ) +{ + VOID *HobList; + + HobList = GetHobList (); + return GetNextHob (Type, HobList); +} + +/** + Returns the next instance of the matched GUID HOB from the starting HOB. +**/ +VOID * +EFIAPI +GetNextGuidHob ( + CONST EFI_GUID *Guid, + CONST VOID *HobStart + ) +{ + EFI_PEI_HOB_POINTERS GuidHob; + + GuidHob.Raw = (UINT8 *) HobStart; + while ((GuidHob.Raw = GetNextHob (EFI_HOB_TYPE_GUID_EXTENSION, GuidHob.Raw)) != NULL) { + if (CompareGuid (Guid, &GuidHob.Guid->Name)) { + break; + } + GuidHob.Raw = GET_NEXT_HOB (GuidHob); + } + return GuidHob.Raw; +} + +/** + Returns the first instance of the matched GUID HOB among the whole HOB list. +**/ +VOID * +EFIAPI +GetFirstGuidHob ( + CONST EFI_GUID *Guid + ) +{ + VOID *HobList; + + HobList = GetHobList (); + return GetNextGuidHob (Guid, HobList); +} |
