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/** @file
Copyright (C) 2013 - 2014, 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.
**/
#include <types.h>
#include <string.h>
#include "fspsupport.h"
/**
This function retrieves the top of usable low memory.
@param HobListPtr A HOB list pointer.
@retval Usable low memory top.
**/
UINT32
GetUsableLowMemTop (
CONST VOID *HobStart
)
{
EFI_PEI_HOB_POINTERS Hob;
UINT32 MemLen;
/*
* Get the HOB list for processing
*/
Hob.Raw = (VOID *)HobStart;
/*
* Collect memory ranges
*/
MemLen = 0x100000;
while (!END_OF_HOB_LIST (Hob)) {
if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
if (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) {
/*
* Need memory above 1MB to be collected here
*/
if (Hob.ResourceDescriptor->PhysicalStart >= 0x100000 &&
Hob.ResourceDescriptor->PhysicalStart < (EFI_PHYSICAL_ADDRESS) 0x100000000) {
MemLen += (UINT32) (Hob.ResourceDescriptor->ResourceLength);
}
}
}
Hob.Raw = GET_NEXT_HOB (Hob);
}
return MemLen;
}
/**
This function retrieves the top of usable high memory.
@param HobListPtr A HOB list pointer.
@retval Usable high memory top.
**/
UINT64
GetUsableHighMemTop (
CONST VOID *HobStart
)
{
EFI_PEI_HOB_POINTERS Hob;
UINT64 MemTop;
/*
* Get the HOB list for processing
*/
Hob.Raw = (VOID *)HobStart;
/*
* Collect memory ranges
*/
MemTop = 0x100000000;
while (!END_OF_HOB_LIST (Hob)) {
if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
if (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) {
/*
* Need memory above 1MB to be collected here
*/
if (Hob.ResourceDescriptor->PhysicalStart >= (EFI_PHYSICAL_ADDRESS) 0x100000000) {
MemTop += (UINT32) (Hob.ResourceDescriptor->ResourceLength);
}
}
}
Hob.Raw = GET_NEXT_HOB (Hob);
}
return MemTop;
}
/**
This function retrieves a special reserved memory region.
@param HobListPtr A HOB list pointer.
@param Length A pointer to the GUID HOB data buffer length. If the GUID HOB is
located, the length will be updated.
@param OwnerGuid A pointer to the owner guild.
@retval Reserved region start address. 0 if this region does not exist.
**/
VOID
GetFspReservedMemoryFromGuid (
CONST VOID *HobListPtr,
EFI_PHYSICAL_ADDRESS *Base,
UINT64 *Length,
EFI_GUID *OwnerGuid
)
{
EFI_PEI_HOB_POINTERS Hob;
/*
* Get the HOB list for processing
*/
Hob.Raw = (VOID *)HobListPtr;
/*
* Collect memory ranges
*/
while (!END_OF_HOB_LIST (Hob)) {
if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
if (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) {
if (CompareGuid(&Hob.ResourceDescriptor->Owner, OwnerGuid)) {
*Base = (EFI_PHYSICAL_ADDRESS) (Hob.ResourceDescriptor->PhysicalStart);
*Length = (UINT64) (Hob.ResourceDescriptor->ResourceLength);
break;
}
}
}
Hob.Raw = GET_NEXT_HOB (Hob);
}
}
/**
This function retrieves the TSEG reserved normal memory.
@param HobListPtr A HOB list pointer.
@param Length A pointer to the TSEG reserved memory length buffer. If the GUID HOB is
located, the length will be updated.
@param Guid A pointer to owner HOB GUID.
@retval NULL Failed to find the TSEG reserved memory.
@retval others TSEG reserved memory base.
**/
UINT32
GetTsegReservedMemory (
CONST VOID *HobListPtr,
UINT32 *Length
)
{
const EFI_GUID TsegOwnerHobGuid = FSP_HOB_RESOURCE_OWNER_TSEG_GUID;
UINT64 Length64 = 0;
EFI_PHYSICAL_ADDRESS Base = 0;
GetFspReservedMemoryFromGuid (HobListPtr, &Base, &Length64, (EFI_GUID *)&TsegOwnerHobGuid);
if ((Length != NULL) && (Base != 0)) {
*Length = (UINT32)Length64;
}
return (UINT32)Base;
}
/**
This function retrieves the FSP reserved normal memory.
@param HobListPtr A HOB list pointer.
@param Length A pointer to the FSP reserved memory length buffer. If the GUID HOB is
located, the length will be updated.
@param Guid A pointer to owner HOB GUID.
@retval NULL Failed to find the FSP reserved memory.
@retval others FSP reserved memory base.
**/
UINT32
GetFspReservedMemory (
CONST VOID *HobListPtr,
UINT32 *Length
)
{
const EFI_GUID FspOwnerHobGuid = FSP_HOB_RESOURCE_OWNER_FSP_GUID;
UINT64 Length64 = 0;
EFI_PHYSICAL_ADDRESS Base = 0;
GetFspReservedMemoryFromGuid (HobListPtr, &Base, &Length64, (EFI_GUID *)&FspOwnerHobGuid);
if ((Length != NULL) && (Base != 0)) {
*Length = (UINT32)Length64;
}
return (UINT32)Base;
}
/**
This function retrieves a GUIDed HOB data buffer and size.
@param HobListPtr A HOB list pointer.
@param Length A pointer to the GUID HOB data buffer length. If the
GUID HOB is located, the length will be updated.
@param Guid A pointer to HOB GUID.
@retval NULL Failed to find the GUID HOB.
@retval others GUID HOB data buffer pointer.
**/
VOID *
GetGuidHobDataBuffer (
CONST VOID *HobListPtr,
UINT32 *Length,
EFI_GUID *Guid
)
{
UINT8 *GuidHob;
/* FSP NVS DATA HOB */
GuidHob = GetNextGuidHob(Guid, HobListPtr);
if (GuidHob == NULL) {
return NULL;
} else {
if (Length) {
*Length = GET_GUID_HOB_DATA_SIZE (GuidHob);
}
return GET_GUID_HOB_DATA (GuidHob);
}
}
/**
This function retrieves FSP Non-volatile Storage HOB buffer and size.
@param HobListPtr A HOB list pointer.
@param Length A pointer to the NVS data buffer length. If the FSP NVS
HOB is located, the length will be updated.
@retval NULL Failed to find the NVS HOB.
@retval others FSP NVS data buffer pointer.
**/
VOID *
GetFspNvsDataBuffer (
CONST VOID *HobListPtr,
UINT32 *Length
)
{
const EFI_GUID FspNvsHobGuid = FSP_NON_VOLATILE_STORAGE_HOB_GUID;
return GetGuidHobDataBuffer (HobListPtr, Length, (EFI_GUID *)&FspNvsHobGuid);
}
/**
This function retrieves Bootloader temporary stack buffer and size.
@param HobListPtr A HOB list pointer.
@param Length A pointer to the Bootloader temporary stack length.
If the HOB is located, the length will be updated.
@retval NULL Failed to find the Bootloader temporary stack HOB.
@retval others Bootloader temporary stackbuffer pointer.
**/
VOID *
GetBootloaderTempMemoryBuffer (
CONST VOID *HobListPtr,
UINT32 *Length
)
{
const EFI_GUID FspBootloaderTemporaryMemoryHobGuid = FSP_BOOTLOADER_TEMPORARY_MEMORY_HOB_GUID;
return GetGuidHobDataBuffer (HobListPtr, Length, (EFI_GUID *)&FspBootloaderTemporaryMemoryHobGuid);
}
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