diff options
Diffstat (limited to 'ShellPkg/Library/UefiShellDebug1CommandsLib/UefiShellDebug1CommandsLib.c')
| -rw-r--r-- | ShellPkg/Library/UefiShellDebug1CommandsLib/UefiShellDebug1CommandsLib.c | 649 |
1 files changed, 649 insertions, 0 deletions
diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/UefiShellDebug1CommandsLib.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/UefiShellDebug1CommandsLib.c new file mode 100644 index 0000000000..c601abebcb --- /dev/null +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/UefiShellDebug1CommandsLib.c @@ -0,0 +1,649 @@ +/** @file
+ Main file for NULL named library for debug1 profile shell command functions.
+
+ Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
+ 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 "UefiShellDebug1CommandsLib.h"
+
+STATIC CONST CHAR16 mFileName[] = L"Debug1Commands";
+EFI_HANDLE gShellDebug1HiiHandle = NULL;
+
+/**
+ Gets the debug file name. This will be used if HII is not working.
+
+ @retval NULL No file is available.
+ @return The NULL-terminated filename to get help from.
+**/
+CONST CHAR16*
+EFIAPI
+ShellCommandGetManFileNameDebug1 (
+ VOID
+ )
+{
+ return (mFileName);
+}
+
+/**
+ Constructor for the Shell Debug1 Commands library.
+
+ @param ImageHandle the image handle of the process
+ @param SystemTable the EFI System Table pointer
+
+ @retval EFI_SUCCESS the shell command handlers were installed sucessfully
+ @retval EFI_UNSUPPORTED the shell level required was not found.
+**/
+EFI_STATUS
+EFIAPI
+UefiShellDebug1CommandsLibConstructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ //
+ // check our bit of the profiles mask
+ //
+ if ((PcdGet8(PcdShellProfileMask) & BIT1) == 0) {
+ return (EFI_SUCCESS);
+ }
+
+ //
+ // install the HII stuff.
+ //
+ gShellDebug1HiiHandle = HiiAddPackages (&gShellDebug1HiiGuid, gImageHandle, UefiShellDebug1CommandsLibStrings, NULL);
+ if (gShellDebug1HiiHandle == NULL) {
+ return (EFI_DEVICE_ERROR);
+ }
+
+ //
+ // install our shell command handlers that are always installed
+ //
+ ShellCommandRegisterCommandName(L"setsize", ShellCommandRunSetSize , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_SETSIZE) );
+ ShellCommandRegisterCommandName(L"comp", ShellCommandRunComp , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_COMP) );
+ ShellCommandRegisterCommandName(L"mode", ShellCommandRunMode , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_MODE) );
+ ShellCommandRegisterCommandName(L"memmap", ShellCommandRunMemMap , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_MEMMAP) );
+ ShellCommandRegisterCommandName(L"eficompress", ShellCommandRunEfiCompress , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_EFICOMPRESS) );
+ ShellCommandRegisterCommandName(L"efidecompress", ShellCommandRunEfiDecompress , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_EFIDCOMPRESS) );
+ ShellCommandRegisterCommandName(L"dmem", ShellCommandRunDmem , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_DMEM) );
+ ShellCommandRegisterCommandName(L"loadpcirom", ShellCommandRunLoadPciRom , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_LOAD_PCI_ROM) );
+ ShellCommandRegisterCommandName(L"mm", ShellCommandRunMm , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_MM) );
+ ShellCommandRegisterCommandName(L"setvar", ShellCommandRunSetVar , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_SETVAR) );
+ ShellCommandRegisterCommandName(L"sermode", ShellCommandRunSerMode , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_SERMODE) );
+ ShellCommandRegisterCommandName(L"pci", ShellCommandRunPci , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_PCI) );
+ ShellCommandRegisterCommandName(L"smbiosview", ShellCommandRunSmbiosView , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_SMBIOSVIEW) );
+ ShellCommandRegisterCommandName(L"dmpstore", ShellCommandRunDmpStore , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_DMPSTORE) );
+ ShellCommandRegisterCommandName(L"dblk", ShellCommandRunDblk , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_DBLK) );
+ ShellCommandRegisterCommandName(L"edit", ShellCommandRunEdit , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_EDIT) );
+ ShellCommandRegisterCommandName(L"hexedit", ShellCommandRunHexEdit , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_HEXEDIT) );
+
+ //
+ // check install profile bit of the profiles mask is set
+ //
+ if ((PcdGet8(PcdShellProfileMask) & BIT2) == 0) {
+ ShellCommandRegisterCommandName(L"bcfg", ShellCommandRunBcfg , ShellCommandGetManFileNameDebug1, 0, L"Debug1", TRUE, gShellDebug1HiiHandle, STRING_TOKEN(STR_GET_HELP_BCFG) );
+ }
+
+
+
+
+ ShellCommandRegisterAlias(L"dmem", L"mem");
+
+ return (EFI_SUCCESS);
+}
+
+/**
+ Destructor for the library. free any resources.
+
+ @param ImageHandle The image handle of the process.
+ @param SystemTable The EFI System Table pointer.
+**/
+EFI_STATUS
+EFIAPI
+UefiShellDebug1CommandsLibDestructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ if (gShellDebug1HiiHandle != NULL) {
+ HiiRemovePackages(gShellDebug1HiiHandle);
+ }
+ return (EFI_SUCCESS);
+}
+
+STATIC CONST CHAR8 Hex[] = {
+ '0',
+ '1',
+ '2',
+ '3',
+ '4',
+ '5',
+ '6',
+ '7',
+ '8',
+ '9',
+ 'A',
+ 'B',
+ 'C',
+ 'D',
+ 'E',
+ 'F'
+};
+
+/**
+ Dump some hexadecimal data to the screen.
+
+ @param[in] Indent How many spaces to indent the output.
+ @param[in] Offset The offset of the printing.
+ @param[in] DataSize The size in bytes of UserData.
+ @param[in] UserData The data to print out.
+**/
+VOID
+DumpHex (
+ IN UINTN Indent,
+ IN UINTN Offset,
+ IN UINTN DataSize,
+ IN VOID *UserData
+ )
+{
+ UINT8 *Data;
+
+ CHAR8 Val[50];
+
+ CHAR8 Str[20];
+
+ UINT8 TempByte;
+ UINTN Size;
+ UINTN Index;
+
+ Data = UserData;
+ while (DataSize != 0) {
+ Size = 16;
+ if (Size > DataSize) {
+ Size = DataSize;
+ }
+
+ for (Index = 0; Index < Size; Index += 1) {
+ TempByte = Data[Index];
+ Val[Index * 3 + 0] = Hex[TempByte >> 4];
+ Val[Index * 3 + 1] = Hex[TempByte & 0xF];
+ Val[Index * 3 + 2] = (CHAR8) ((Index == 7) ? '-' : ' ');
+ Str[Index] = (CHAR8) ((TempByte < ' ' || TempByte > 'z') ? '.' : TempByte);
+ }
+
+ Val[Index * 3] = 0;
+ Str[Index] = 0;
+ ShellPrintEx(-1, -1, L"%*a%08X: %-48a *%a*\r\n", Indent, "", Offset, Val, Str);
+
+ Data += Size;
+ Offset += Size;
+ DataSize -= Size;
+ }
+}
+
+/**
+ Convert a Unicode character to upper case only if
+ it maps to a valid small-case ASCII character.
+
+ This internal function only deal with Unicode character
+ which maps to a valid small-case ASCII character, i.e.
+ L'a' to L'z'. For other Unicode character, the input character
+ is returned directly.
+
+ @param Char The character to convert.
+
+ @retval LowerCharacter If the Char is with range L'a' to L'z'.
+ @retval Unchanged Otherwise.
+
+
+ //Stolen from MdePkg Baselib
+**/
+CHAR16
+EFIAPI
+CharToUpper (
+ IN CHAR16 Char
+ )
+{
+ if (Char >= L'a' && Char <= L'z') {
+ return (CHAR16) (Char - (L'a' - L'A'));
+ }
+
+ return Char;
+}
+
+/**
+ Function returns a system configuration table that is stored in the
+ EFI System Table based on the provided GUID.
+
+ @param[in] TableGuid A pointer to the table's GUID type.
+ @param[in, out] Table On exit, a pointer to a system configuration table.
+
+ @retval EFI_SUCCESS A configuration table matching TableGuid was found.
+ @retval EFI_NOT_FOUND A configuration table matching TableGuid was not found.
+**/
+EFI_STATUS
+EFIAPI
+GetSystemConfigurationTable (
+ IN EFI_GUID *TableGuid,
+ IN OUT VOID **Table
+ )
+{
+ UINTN Index;
+ ASSERT (Table != NULL);
+
+ for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {
+ if (CompareGuid (TableGuid, &(gST->ConfigurationTable[Index].VendorGuid))) {
+ *Table = gST->ConfigurationTable[Index].VendorTable;
+ return EFI_SUCCESS;
+ }
+ }
+
+ return EFI_NOT_FOUND;
+}
+
+/**
+ Convert a Unicode character to numerical value.
+
+ This internal function only deal with Unicode character
+ which maps to a valid hexadecimal ASII character, i.e.
+ L'0' to L'9', L'a' to L'f' or L'A' to L'F'. For other
+ Unicode character, the value returned does not make sense.
+
+ @param Char The character to convert.
+
+ @return The numerical value converted.
+
+**/
+UINTN
+EFIAPI
+HexCharToUintn (
+ IN CHAR16 Char
+ )
+{
+ if (Char >= L'0' && Char <= L'9') {
+ return Char - L'0';
+ }
+
+ return (UINTN) (10 + CharToUpper (Char) - L'A');
+}
+
+/**
+ Convert a string representation of a guid to a Guid value.
+
+ @param[in] StringGuid The pointer to the string of a guid.
+ @param[in, out] Guid The pointer to the GUID structure to populate.
+
+ @retval EFI_INVALID_PARAMETER A parameter was invalid.
+ @retval EFI_SUCCESS The conversion was successful.
+**/
+EFI_STATUS
+EFIAPI
+ConvertStringToGuid (
+ IN CONST CHAR16 *StringGuid,
+ IN OUT EFI_GUID *Guid
+ )
+{
+ CHAR16 *TempCopy;
+ CHAR16 *TempSpot;
+ CHAR16 *Walker;
+ UINT64 TempVal;
+ EFI_STATUS Status;
+
+ if (StringGuid == NULL) {
+ return (EFI_INVALID_PARAMETER);
+ } else if (StrLen(StringGuid) != 36) {
+ return (EFI_INVALID_PARAMETER);
+ }
+ TempCopy = NULL;
+ TempCopy = StrnCatGrow(&TempCopy, NULL, StringGuid, 0);
+ if (TempCopy == NULL) {
+ return (EFI_OUT_OF_RESOURCES);
+ }
+ Walker = TempCopy;
+ TempSpot = StrStr(Walker, L"-");
+ if (TempSpot != NULL) {
+ *TempSpot = CHAR_NULL;
+ }
+ Status = ShellConvertStringToUint64(Walker, &TempVal, TRUE, FALSE);
+ if (EFI_ERROR(Status)) {
+ FreePool(TempCopy);
+ return (Status);
+ }
+ Guid->Data1 = (UINT32)TempVal;
+ Walker += 9;
+ TempSpot = StrStr(Walker, L"-");
+ if (TempSpot != NULL) {
+ *TempSpot = CHAR_NULL;
+ }
+ Status = ShellConvertStringToUint64(Walker, &TempVal, TRUE, FALSE);
+ if (EFI_ERROR(Status)) {
+ FreePool(TempCopy);
+ return (Status);
+ }
+ Guid->Data2 = (UINT16)TempVal;
+ Walker += 5;
+ TempSpot = StrStr(Walker, L"-");
+ if (TempSpot != NULL) {
+ *TempSpot = CHAR_NULL;
+ }
+ Status = ShellConvertStringToUint64(Walker, &TempVal, TRUE, FALSE);
+ if (EFI_ERROR(Status)) {
+ FreePool(TempCopy);
+ return (Status);
+ }
+ Guid->Data3 = (UINT16)TempVal;
+ Walker += 5;
+ Guid->Data4[0] = (UINT8)(HexCharToUintn(Walker[0]) * 16);
+ Guid->Data4[0] = (UINT8)(Guid->Data4[0]+ (UINT8)HexCharToUintn(Walker[1]));
+ Walker += 2;
+ Guid->Data4[1] = (UINT8)(HexCharToUintn(Walker[0]) * 16);
+ Guid->Data4[1] = (UINT8)(Guid->Data4[1] + (UINT8)HexCharToUintn(Walker[1]));
+ Walker += 3;
+ Guid->Data4[2] = (UINT8)(HexCharToUintn(Walker[0]) * 16);
+ Guid->Data4[2] = (UINT8)(Guid->Data4[2] + (UINT8)HexCharToUintn(Walker[1]));
+ Walker += 2;
+ Guid->Data4[3] = (UINT8)(HexCharToUintn(Walker[0]) * 16);
+ Guid->Data4[3] = (UINT8)(Guid->Data4[3] + (UINT8)HexCharToUintn(Walker[1]));
+ Walker += 2;
+ Guid->Data4[4] = (UINT8)(HexCharToUintn(Walker[0]) * 16);
+ Guid->Data4[4] = (UINT8)(Guid->Data4[4] + (UINT8)HexCharToUintn(Walker[1]));
+ Walker += 2;
+ Guid->Data4[5] = (UINT8)(HexCharToUintn(Walker[0]) * 16);
+ Guid->Data4[5] = (UINT8)(Guid->Data4[5] + (UINT8)HexCharToUintn(Walker[1]));
+ Walker += 2;
+ Guid->Data4[6] = (UINT8)(HexCharToUintn(Walker[0]) * 16);
+ Guid->Data4[6] = (UINT8)(Guid->Data4[6] + (UINT8)HexCharToUintn(Walker[1]));
+ Walker += 2;
+ Guid->Data4[7] = (UINT8)(HexCharToUintn(Walker[0]) * 16);
+ Guid->Data4[7] = (UINT8)(Guid->Data4[7] + (UINT8)HexCharToUintn(Walker[1]));
+ FreePool(TempCopy);
+ return (EFI_SUCCESS);
+}
+
+/**
+ Clear the line at the specified Row.
+
+ @param[in] Row The row number to be cleared ( start from 1 )
+ @param[in] LastCol The last printable column.
+ @param[in] LastRow The last printable row.
+**/
+VOID
+EFIAPI
+EditorClearLine (
+ IN UINTN Row,
+ IN UINTN LastCol,
+ IN UINTN LastRow
+ )
+{
+ CHAR16 Line[200];
+
+ if (Row == 0) {
+ Row = 1;
+ }
+
+ //
+ // prepare a blank line
+ //
+ SetMem16(Line, LastCol*sizeof(CHAR16), L' ');
+
+ if (Row == LastRow) {
+ //
+ // if CHAR_NULL is still at position 80, it will cause first line error
+ //
+ Line[LastCol - 1] = CHAR_NULL;
+ } else {
+ Line[LastCol] = CHAR_NULL;
+ }
+
+ //
+ // print out the blank line
+ //
+ ShellPrintEx (0, ((INT32)Row) - 1, Line);
+}
+
+/**
+ Determine if the character is valid for a filename.
+
+ @param[in] Ch The character to test.
+
+ @retval TRUE The character is valid.
+ @retval FALSE The character is not valid.
+**/
+BOOLEAN
+EFIAPI
+IsValidFileNameChar (
+ IN CONST CHAR16 Ch
+ )
+{
+ //
+ // See if there are any illegal characters within the name
+ //
+ if (Ch < 0x20 || Ch == L'\"' || Ch == L'*' || Ch == L'/' || Ch == L'<' || Ch == L'>' || Ch == L'?' || Ch == L'|') {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/**
+ Check if file name has illegal characters.
+
+ @param Name The filename to check.
+
+ @retval TRUE The filename is ok.
+ @retval FALSE The filename is not ok.
+**/
+BOOLEAN
+EFIAPI
+IsValidFileName (
+ IN CONST CHAR16 *Name
+ )
+{
+
+ UINTN Index;
+ UINTN Len;
+
+ //
+ // check the length of Name
+ //
+ for (Len = 0, Index = StrLen (Name) - 1; Index + 1 != 0; Index--, Len++) {
+ if (Name[Index] == '\\' || Name[Index] == ':') {
+ break;
+ }
+ }
+
+ if (Len == 0 || Len > 255) {
+ return FALSE;
+ }
+ //
+ // check whether any char in Name not appears in valid file name char
+ //
+ for (Index = 0; Index < StrLen (Name); Index++) {
+ if (!IsValidFileNameChar (Name[Index])) {
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+/**
+ Find a filename that is valid (not taken) with the given extension.
+
+ @param[in] Extension The file extension.
+
+ @retval NULL Something went wrong.
+ @return the valid filename.
+**/
+CHAR16 *
+EFIAPI
+EditGetDefaultFileName (
+ IN CONST CHAR16 *Extension
+ )
+{
+ EFI_STATUS Status;
+ UINTN Suffix;
+ CHAR16 *FileNameTmp;
+
+ Suffix = 0;
+
+ do {
+ FileNameTmp = CatSPrint (NULL, L"NewFile%d.%s", Suffix, Extension);
+
+ //
+ // after that filename changed to path
+ //
+ Status = ShellFileExists (FileNameTmp);
+
+ if (Status == EFI_NOT_FOUND) {
+ return FileNameTmp;
+ }
+
+ FreePool (FileNameTmp);
+ FileNameTmp = NULL;
+ Suffix++;
+ } while (Suffix != 0);
+
+ FreePool (FileNameTmp);
+ return NULL;
+}
+
+/**
+ Read a file into an allocated buffer. The buffer is the responsibility
+ of the caller to free.
+
+ @param[in] FileName The filename of the file to open.
+ @param[out] Buffer Upon successful return, the pointer to the
+ address of the allocated buffer.
+ @param[out] BufferSize If not NULL, then the pointer to the size
+ of the allocated buffer.
+ @param[out] ReadOnly Upon successful return TRUE if the file is
+ read only. FALSE otherwise.
+
+ @retval EFI_NOT_FOUND The filename did not represent a file in the
+ file system.
+ @retval EFI_SUCCESS The file was read into the buffer.
+ @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
+ @retval EFI_LOAD_ERROR The file read operation failed.
+ @retval EFI_INVALID_PARAMETER A parameter was invalid.
+ @retval EFI_INVALID_PARAMETER FileName was NULL.
+ @retval EFI_INVALID_PARAMETER FileName was a directory.
+**/
+EFI_STATUS
+EFIAPI
+ReadFileIntoBuffer (
+ IN CONST CHAR16 *FileName,
+ OUT VOID **Buffer,
+ OUT UINTN *BufferSize OPTIONAL,
+ OUT BOOLEAN *ReadOnly
+ )
+{
+ VOID *InternalBuffer;
+ UINTN FileSize;
+ SHELL_FILE_HANDLE FileHandle;
+ BOOLEAN CreateFile;
+ EFI_STATUS Status;
+ EFI_FILE_INFO *Info;
+
+ InternalBuffer = NULL;
+ FileSize = 0;
+ FileHandle = NULL;
+ CreateFile = FALSE;
+ Status = EFI_SUCCESS;
+ Info = NULL;
+
+ if (FileName == NULL || Buffer == NULL || ReadOnly == NULL) {
+ return (EFI_INVALID_PARAMETER);
+ }
+
+ //
+ // try to open the file
+ //
+ Status = ShellOpenFileByName (FileName, &FileHandle, EFI_FILE_MODE_READ, 0);
+
+ if (!EFI_ERROR(Status)) {
+ ASSERT(CreateFile == FALSE);
+ if (FileHandle == NULL) {
+ return EFI_LOAD_ERROR;
+ }
+
+ Info = ShellGetFileInfo(FileHandle);
+
+ if (Info->Attribute & EFI_FILE_DIRECTORY) {
+ FreePool (Info);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Info->Attribute & EFI_FILE_READ_ONLY) {
+ *ReadOnly = TRUE;
+ } else {
+ *ReadOnly = FALSE;
+ }
+ //
+ // get file size
+ //
+ FileSize = (UINTN) Info->FileSize;
+
+ FreePool (Info);
+ } else if (Status == EFI_NOT_FOUND) {
+ //
+ // file not exists. add create and try again
+ //
+ Status = ShellOpenFileByName (FileName, &FileHandle, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE|EFI_FILE_MODE_CREATE, 0);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ } else {
+ //
+ // it worked. now delete it and move on with the name (now validated)
+ //
+ Status = ShellDeleteFile (&FileHandle);
+ if (Status == EFI_WARN_DELETE_FAILURE) {
+ Status = EFI_ACCESS_DENIED;
+ }
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ }
+ //
+ // file doesn't exist, so set CreateFile to TRUE and can't be read-only
+ //
+ CreateFile = TRUE;
+ *ReadOnly = FALSE;
+ }
+
+ //
+ // the file exists
+ //
+ if (!CreateFile) {
+ //
+ // allocate buffer to read file
+ //
+ InternalBuffer = AllocateZeroPool (FileSize);
+ if (InternalBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ //
+ // read file into InternalBuffer
+ //
+ Status = ShellReadFile (FileHandle, &FileSize, InternalBuffer);
+ ShellCloseFile(&FileHandle);
+ FileHandle = NULL;
+ if (EFI_ERROR (Status)) {
+ SHELL_FREE_NON_NULL (InternalBuffer);
+ return EFI_LOAD_ERROR;
+ }
+ }
+ *Buffer = InternalBuffer;
+ if (BufferSize != NULL) {
+ *BufferSize = FileSize;
+ }
+ return (EFI_SUCCESS);
+
+}
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