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/** @file
*
* Copyright (c) 2011-2014, ARM Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/HobLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Guid/ArmMpCoreInfo.h>
ARM_PROCESSOR_TABLE mArmProcessorTableTemplate = {
{
EFI_ARM_PROCESSOR_TABLE_SIGNATURE,
0,
EFI_ARM_PROCESSOR_TABLE_REVISION,
EFI_ARM_PROCESSOR_TABLE_OEM_ID,
EFI_ARM_PROCESSOR_TABLE_OEM_TABLE_ID,
EFI_ARM_PROCESSOR_TABLE_OEM_REVISION,
EFI_ARM_PROCESSOR_TABLE_CREATOR_ID,
EFI_ARM_PROCESSOR_TABLE_CREATOR_REVISION,
{ 0 },
0
}, //ARM Processor table header
0, // Number of entries in ARM processor Table
NULL // ARM Processor Table
};
/** Publish ARM Processor Data table in UEFI SYSTEM Table.
* @param: HobStart Pointer to the beginning of the HOB List from PEI.
*
* Description : This function iterates through HOB list and finds ARM processor Table Entry HOB.
* If the ARM processor Table Entry HOB is found, the HOB data is copied to run-time memory
* and a pointer is assigned to it in ARM processor table. Then the ARM processor table is
* installed in EFI configuration table.
**/
VOID
EFIAPI
PublishArmProcessorTable (
VOID
)
{
EFI_PEI_HOB_POINTERS Hob;
Hob.Raw = GetHobList ();
// Iterate through the HOBs and find if there is ARM PROCESSOR ENTRY HOB
for (; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {
// Check for Correct HOB type
if ((GET_HOB_TYPE (Hob)) == EFI_HOB_TYPE_GUID_EXTENSION) {
// Check for correct GUID type
if (CompareGuid(&(Hob.Guid->Name), &gArmMpCoreInfoGuid)) {
ARM_PROCESSOR_TABLE *ArmProcessorTable;
EFI_STATUS Status;
// Allocate Runtime memory for ARM processor table
ArmProcessorTable = (ARM_PROCESSOR_TABLE*)AllocateRuntimePool(sizeof(ARM_PROCESSOR_TABLE));
// Check if the memory allocation is successful or not
ASSERT(NULL != ArmProcessorTable);
// Set ARM processor table to default values
CopyMem(ArmProcessorTable,&mArmProcessorTableTemplate,sizeof(ARM_PROCESSOR_TABLE));
// Fill in Length fields of ARM processor table
ArmProcessorTable->Header.Length = sizeof(ARM_PROCESSOR_TABLE);
ArmProcessorTable->Header.DataLen = GET_GUID_HOB_DATA_SIZE(Hob);
// Fill in Identifier(ARM processor table GUID)
ArmProcessorTable->Header.Identifier = gArmMpCoreInfoGuid;
// Set Number of ARM core entries in the Table
ArmProcessorTable->NumberOfEntries = GET_GUID_HOB_DATA_SIZE(Hob)/sizeof(ARM_CORE_INFO);
// Allocate runtime memory for ARM processor Table entries
ArmProcessorTable->ArmCpus = (ARM_CORE_INFO*)AllocateRuntimePool (
ArmProcessorTable->NumberOfEntries * sizeof(ARM_CORE_INFO));
// Check if the memory allocation is successful or not
ASSERT(NULL != ArmProcessorTable->ArmCpus);
// Copy ARM Processor Table data from HOB list to newly allocated memory
CopyMem(ArmProcessorTable->ArmCpus,GET_GUID_HOB_DATA(Hob), ArmProcessorTable->Header.DataLen);
// Install the ARM Processor table into EFI system configuration table
Status = gBS->InstallConfigurationTable (&gArmMpCoreInfoGuid, ArmProcessorTable);
ASSERT_EFI_ERROR (Status);
}
}
}
}
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