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/** @file
Support of memory test in PEI Phase.
Copyright (c) 2006 - 2008, Intel Corporation. <BR>
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.
**/
#include "BaseMemoryTest.h"
PEI_BASE_MEMORY_TEST_PPI mPeiBaseMemoryTestPpi = {
BaseMemoryTest
};
EFI_PEI_PPI_DESCRIPTOR PpiListPeiBaseMemoryTest = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gPeiBaseMemoryTestPpiGuid,
&mPeiBaseMemoryTestPpi
};
/**
Entry point of BaseMemoryTestPei PEIM.
This function is the entry point of BaseMemoryTestPei PEIM.
It installs the PEI_BASE_MEMORY_TEST_PPI.
@param FileHandle Handle of the file being invoked.
@param PeiServices Describes the list of possible PEI Services.
@retval EFI_SUCCESS PEI_BASE_MEMORY_TEST_PPI is successfully installed.
@retval Others PEI_BASE_MEMORY_TEST_PPI is not successfully installed.
**/
EFI_STATUS
EFIAPI
PeiBaseMemoryTestInit (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
return PeiServicesInstallPpi (&PpiListPeiBaseMemoryTest);
}
/**
Test base memory.
@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
@param This Pointer to this PPI instance.
@param BeginAddress Beginning of the memory address to be checked.
@param MemoryLength Bytes of memory range to be checked.
@param Operation Type of memory check operation to be performed.
@param ErrorAddress Pointer to address of the error memory returned.
@retval EFI_SUCCESS Memory test passed.
@retval EFI_DEVICE_ERROR Memory test failed.
**/
EFI_STATUS
EFIAPI
BaseMemoryTest (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_BASE_MEMORY_TEST_PPI *This,
IN EFI_PHYSICAL_ADDRESS BeginAddress,
IN UINT64 MemoryLength,
IN PEI_MEMORY_TEST_OP Operation,
OUT EFI_PHYSICAL_ADDRESS *ErrorAddress
)
{
UINT32 TestPattern;
EFI_PHYSICAL_ADDRESS TempAddress;
UINT32 SpanSize;
REPORT_STATUS_CODE (EFI_PROGRESS_CODE, PcdGet32 (PcdStatusCodeValueMemoryTestStarted));
TestPattern = TEST_PATTERN;
SpanSize = 0;
//
// Make sure we don't try and test anything above the max physical address range
//
ASSERT (BeginAddress + MemoryLength < EFI_MAX_ADDRESS);
switch (Operation) {
case Extensive:
//
// Extensive means full and detailed check,
// so use small span size to cover the entire test range.
//
SpanSize = 0x4;
break;
case Sparse:
case Quick:
//
// Sparse and Quick indicates quick test,
// so use large span size for sample test.
//
SpanSize = COVER_SPAN;
break;
case Ignore:
//
// Ignore means no test.
//
goto Done;
break;
}
//
// Write the test pattern into memory range
//
TempAddress = BeginAddress;
while (TempAddress < BeginAddress + MemoryLength) {
(*(UINT32 *) (UINTN) TempAddress) = TestPattern;
TempAddress += SpanSize;
}
//
// Read pattern from memory and compare it
//
TempAddress = BeginAddress;
while (TempAddress < BeginAddress + MemoryLength) {
if ((*(UINT32 *) (UINTN) TempAddress) != TestPattern) {
//
// Value read back does not equal to the value written, so error is detected.
//
*ErrorAddress = TempAddress;
REPORT_STATUS_CODE (EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED, PcdGet32 (PcdStatusCodeValueUncorrectableMemoryError));
return EFI_DEVICE_ERROR;
}
TempAddress += SpanSize;
}
Done:
return EFI_SUCCESS;
}
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