mirror of https://github.com/acidanthera/audk.git
144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/** @file
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Support of memory test in PEI Phase.
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Copyright (c) 2006 - 2008, Intel Corporation. <BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "BaseMemoryTest.h"
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PEI_BASE_MEMORY_TEST_PPI mPeiBaseMemoryTestPpi = {
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BaseMemoryTest
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};
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EFI_PEI_PPI_DESCRIPTOR PpiListPeiBaseMemoryTest = {
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(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gPeiBaseMemoryTestPpiGuid,
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&mPeiBaseMemoryTestPpi
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};
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/**
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Entry point of BaseMemoryTestPei PEIM.
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This function is the entry point of BaseMemoryTestPei PEIM.
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It installs the PEI_BASE_MEMORY_TEST_PPI.
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@param FfsHeader Pointer to FFS File Header.
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@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
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@retval EFI_SUCCESS PEI_BASE_MEMORY_TEST_PPI is successfully installed.
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@retval Others PEI_BASE_MEMORY_TEST_PPI is not successfully installed.
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**/
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EFI_STATUS
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EFIAPI
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PeiBaseMemoryTestInit (
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IN EFI_FFS_FILE_HEADER *FfsHeader,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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return PeiServicesInstallPpi (&PpiListPeiBaseMemoryTest);
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}
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/**
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Test base memory.
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@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.
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@param This Pointer to this PPI instance.
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@param BeginAddress Beginning of the memory address to be checked.
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@param MemoryLength Bytes of memory range to be checked.
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@param Operation Type of memory check operation to be performed.
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@param ErrorAddress Pointer to address of the error memory returned.
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@retval EFI_SUCCESS Memory test passed.
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@retval EFI_DEVICE_ERROR Memory test failed.
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**/
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EFI_STATUS
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EFIAPI
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BaseMemoryTest (
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IN EFI_PEI_SERVICES **PeiServices,
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IN PEI_BASE_MEMORY_TEST_PPI *This,
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IN EFI_PHYSICAL_ADDRESS BeginAddress,
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IN UINT64 MemoryLength,
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IN PEI_MEMORY_TEST_OP Operation,
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OUT EFI_PHYSICAL_ADDRESS *ErrorAddress
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)
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{
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UINT32 TestPattern;
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EFI_PHYSICAL_ADDRESS TempAddress;
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UINT32 SpanSize;
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REPORT_STATUS_CODE (EFI_PROGRESS_CODE, PcdGet32 (PcdStatusCodeValueMemoryTestStarted));
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TestPattern = TEST_PATTERN;
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SpanSize = 0;
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//
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// Make sure we don't try and test anything above the max physical address range
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//
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ASSERT (BeginAddress + MemoryLength < EFI_MAX_ADDRESS);
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switch (Operation) {
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case Extensive:
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//
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// Extensive means full and detailed check,
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// so use small span size to cover the entire test range.
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//
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SpanSize = 0x4;
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break;
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case Sparse:
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case Quick:
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//
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// Sparse and Quick indicates quick test,
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// so use large span size for sample test.
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//
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SpanSize = COVER_SPAN;
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break;
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case Ignore:
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//
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// Ignore means no test.
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//
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goto Done;
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break;
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}
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//
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// Write the test pattern into memory range
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//
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TempAddress = BeginAddress;
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while (TempAddress < BeginAddress + MemoryLength) {
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(*(UINT32 *) (UINTN) TempAddress) = TestPattern;
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TempAddress += SpanSize;
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}
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//
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// Read pattern from memory and compare it
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//
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TempAddress = BeginAddress;
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while (TempAddress < BeginAddress + MemoryLength) {
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if ((*(UINT32 *) (UINTN) TempAddress) != TestPattern) {
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//
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// Value read back does not equal to the value written, so error is detected.
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//
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*ErrorAddress = TempAddress;
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REPORT_STATUS_CODE (EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED, PcdGet32 (PcdStatusCodeValueUncorrectableMemoryError));
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return EFI_DEVICE_ERROR;
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}
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TempAddress += SpanSize;
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}
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Done:
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return EFI_SUCCESS;
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}
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