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Maurice Ma
134 lines
2.7 KiB
C
134 lines
2.7 KiB
C
/** @file
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Shell command `mmap` to display the memory map.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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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 <Library/ShellLib.h>
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#include <Library/HobLib.h>
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#include <Guid/MemoryMapInfoGuid.h>
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#include <Library/DebugLib.h>
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/**
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Display memory map.
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@param[in] Shell shell instance
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@param[in] Argc number of command line arguments
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@param[in] Argv command line arguments
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@retval EFI_SUCCESS
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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ShellCommandMmapFunc (
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IN SHELL *Shell,
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IN UINTN Argc,
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IN CHAR16 *Argv[]
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);
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CONST SHELL_COMMAND ShellCommandMmap = {
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L"mmap",
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L"Display memory map",
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&ShellCommandMmapFunc
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};
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/**
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Get string description of memory type.
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@param[in] Type Numeric memory type
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@retval Type string
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**/
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STATIC
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CONST CHAR16 *
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EFIAPI
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MemTypeToStr (
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IN UINTN Type
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)
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{
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switch (Type) {
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case 0x01:
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return L"System Memory";
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case 0x02:
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return L"Reserved";
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case 0x03:
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return L"ACPI NVS";
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case 0x04:
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return L"ACPI Reclaim";
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default:
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return L"Unknown";
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}
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}
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/**
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Get string description of MTRR type.
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@param[in] Type Numeric MTRR type
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@retval Memory Map Info pointer
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**/
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STATIC
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MEMORY_MAP_INFO *
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EFIAPI
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GetMemoryMapInfo (
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VOID
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)
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{
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EFI_HOB_GUID_TYPE *GuidHob;
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GuidHob = GetNextGuidHob (&gLoaderMemoryMapInfoGuid, GetHobList());
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if (GuidHob == NULL) {
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ASSERT (GuidHob);
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return NULL;
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}
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return (MEMORY_MAP_INFO *)GET_GUID_HOB_DATA (GuidHob);
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}
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/**
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Display memory map.
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@param[in] Shell shell instance
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@param[in] Argc number of command line arguments
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@param[in] Argv command line arguments
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@retval EFI_SUCCESS
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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ShellCommandMmapFunc (
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IN SHELL *Shell,
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IN UINTN Argc,
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IN CHAR16 *Argv[]
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)
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{
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UINT32 Index;
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MEMORY_MAP_INFO *MemoryMapInfo;
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MemoryMapInfo = GetMemoryMapInfo();
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ASSERT (MemoryMapInfo != NULL);
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for (Index = 0; Index < MemoryMapInfo->Count; Index++) {
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ShellPrint (L"[0x%09llx-0x%09llx] %s\n",
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MemoryMapInfo->Entry[Index].Base,
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MemoryMapInfo->Entry[Index].Base + MemoryMapInfo->Entry[Index].Size - 1,
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MemTypeToStr (MemoryMapInfo->Entry[Index].Type));
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}
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return EFI_SUCCESS;
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}
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