windows-nt/Source/XPSP1/NT/base/efiutil/sdk/shell/bcfg/bcfg.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 1998 Intel Corporation
Module Name:
bcfg.c
Abstract:
Shell app "bcfg"
Boot time driver config
Revision History
--*/
#include "shell.h"
#define MAX_ENV_SIZE 1024
#define BCFG_NONE 0
#define BCFG_DUMP 1
#define BCFG_MOVE 2
#define BCFG_REMOVE 3
#define BCFG_ADD 4
#define BCFG_USAGE 5
typedef struct {
UINT32 Attributes;
CHAR16 *Description;
EFI_DEVICE_PATH *FilePath;
VOID *LoadOptions;
UINTN LoadOptionsSize;
CHAR16 *FilePathStr;
} BCFG_LOAD_OPTION;
/*
*
*/
EFI_STATUS
InitializeBCfg (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
VOID
DumpFileInfo (
IN SHELL_FILE_ARG *Arg
);
VOID
BCfgDumpBootList (
IN CHAR16 *BootOrder,
IN CHAR16 *BootOption
);
BCFG_LOAD_OPTION *
BCfgParseLoadOption (
UINT8 *Data,
UINTN DataSize
);
VOID
BCfgFreeLoadOption (
BCFG_LOAD_OPTION *Option
);
VOID
BCfgSetOperation (
UINTN *OldOper,
UINTN NewOper
);
VOID
BCfgUsage (
VOID
);
VOID
BCfgRemove (
IN UINTN Position
);
VOID
BCfgMove (
IN UINTN Src,
IN UINTN Dest
);
VOID
BCfgAdd (
IN UINTN Position,
IN CHAR16 *File,
IN CHAR16 *Desc
);
/*
*
*/
BOOLEAN BCfgVerbose = FALSE;
/*
* Selected list
*/
CHAR16 *BCfgSelOrder;
CHAR16 *BCfgSelOption;
CHAR16 *BCfgSelName;
UINT32 BCfgAttributes;
/*
* Scratch memory
*/
UINTN BCfgOrderCount;
UINT16 *BCfgOrder;
UINT8 *BCfgData;
/*
*
*/
EFI_DRIVER_ENTRY_POINT(InitializeBCfg)
EFI_STATUS
InitializeBCfg (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
CHAR16 **Argv;
UINTN Argc;
EFI_STATUS Status;
UINTN Index, BufferSize;
UINTN No1, No2;
CHAR16 *p, *File, *Desc;
UINTN Oper;
/*
* Check to see if the app is to install as a "internal command"
* to the shell
*/
InstallInternalShellCommand (
ImageHandle, SystemTable, InitializeBCfg,
L"bcfg", /* command */
L"bcfg -?", /* command syntax */
L"Configures boot driver & load options", /* 1 line descriptor */
NULL /* command help page */
);
/*
* We are not being installed as an internal command driver, initialize
* as an nshell app and run
*/
InitializeShellApplication (ImageHandle, SystemTable);
Argv = SI->Argv;
Argc = SI->Argc;
BCfgVerbose = FALSE;
BCfgSelName = NULL;
BCfgSelOrder = NULL;
BCfgOrderCount = 0;
No1 = 0;
No2 = 0;
File = NULL;
Desc = NULL;
BCfgOrder = AllocatePool(MAX_ENV_SIZE + 32);
BCfgData = AllocatePool(MAX_ENV_SIZE + 32);
/*
* Scan args for flags
*/
Oper = BCFG_NONE;
for (Index = 1; Index < Argc; Index += 1) {
p = Argv[Index];
if (StrCmp(p, L"?") == 0) {
BCfgSetOperation (&Oper, BCFG_USAGE);
} else if (StrCmp(p, L"driver") == 0) {
BCfgSelOrder = VarDriverOrder;
BCfgSelOption = VarDriverOption;
BCfgSelName = L"boot driver";
} else if (StrCmp(p, L"boot") == 0) {
BCfgSelOrder = VarBootOrder;
BCfgSelOption = VarBootOption;
BCfgSelName = L"boot option";
} else if (StrCmp(p, L"dump") == 0) {
BCfgSetOperation (&Oper, BCFG_DUMP);
} else if (StrCmp(p, L"v") == 0) {
BCfgVerbose = TRUE;
} else if (StrCmp(p, L"rm") == 0) {
Index += 1;
if (Index < Argc) {
No1 = Atoi(Argv[Index]);
}
BCfgSetOperation (&Oper, BCFG_REMOVE);
} else if (StrCmp(p, L"mv") == 0) {
Index += 1;
if (Index < Argc) {
No1 = Atoi(Argv[Index]);
}
Index += 1;
if (Index < Argc) {
No2 = Atoi(Argv[Index]);
}
BCfgSetOperation (&Oper, BCFG_MOVE);
} else if (StrCmp(p, L"add") == 0) {
Index += 1;
if (Index < Argc) {
No1 = Atoi(Argv[Index]);
}
Index += 1;
if (Index < Argc) {
File = Argv[Index];
}
Index += 1;
if (Index < Argc) {
Desc = Argv[Index];
}
BCfgSetOperation (&Oper, BCFG_ADD);
} else {
Print (L"bfg: unknown flag '%h'\n", p);
Oper = BCFG_USAGE;
break;
}
}
if (BCfgSelOrder) {
/*
* Read the boot order var
*/
BufferSize = MAX_ENV_SIZE;
Status = RT->GetVariable (
BCfgSelOrder,
&EfiGlobalVariable,
&BCfgAttributes,
&BufferSize,
BCfgOrder
);
if (EFI_ERROR(Status)) {
BufferSize = 0;
BCfgAttributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS;
if (BCfgSelOrder == VarBootOrder) {
BCfgAttributes = BCfgAttributes | EFI_VARIABLE_RUNTIME_ACCESS;
}
}
BCfgOrderCount = BufferSize / sizeof(UINT16);
}
if (Oper == BCFG_NONE) {
Oper = BCFG_USAGE;
}
if (Oper != BCFG_USAGE && !BCfgSelName) {
Print (L"bcfg: must supply 'driver' or 'boot'\n");
Oper = BCFG_NONE;
}
switch (Oper) {
case BCFG_NONE:
break;
case BCFG_USAGE:
BCfgUsage();
break;
case BCFG_DUMP:
Print (L"The %s list is:\n", BCfgSelName);
BCfgDumpBootList (BCfgSelOrder, BCfgSelOption);
break;
case BCFG_ADD:
BCfgAdd (No1, File, Desc);
break;
case BCFG_MOVE:
BCfgMove (No1, No2);
break;
case BCFG_REMOVE:
BCfgRemove (No1);
break;
}
/*
* Done
*/
if (BCfgOrder) {
FreePool (BCfgOrder);
}
if (BCfgData) {
FreePool (BCfgData);
}
return EFI_SUCCESS;
}
VOID
BCfgSetOperation (
UINTN *OldOper,
UINTN NewOper
)
{
if (*OldOper != BCFG_NONE && *OldOper != BCFG_USAGE) {
Print (L"bcfg: only one operation may be specified at a time\n");
*OldOper = BCFG_USAGE;
}
*OldOper = NewOper;
}
VOID
BCfgUsage (
VOID
)
{
Print (L"bcfg driver|boot [dump [-v]] [add # file \"desc\"] [rm #] [mv # #]\n");
Print (L" driver selects boot driver list\n");
Print (L" boot selects boot option list\n");
Print (L" dump dumps selected list\n");
Print (L" v dumps verbose (includes load options)\n");
Print (L" add add 'file' with 'desc' at position #\n");
Print (L" rm remove #\n");
Print (L" mv move # to #\n");
}
VOID
BCfgAdd (
IN UINTN Position,
IN CHAR16 *File,
IN CHAR16 *Desc
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH *DevicePath, *FilePath, *FileNode;
CHAR16 *Str, *p;
UINT8 *p8;
SHELL_FILE_ARG *Arg;
LIST_ENTRY FileList;
CHAR16 OptionStr[40];
UINTN DescSize, FilePathSize;
BOOLEAN Found;
UINTN Target, Index;
Str = NULL;
FilePath = NULL;
FileNode = NULL;
InitializeListHead (&FileList);
if (Position < 1) {
Position = 1;
}
Position = Position - 1;
if (Position > BCfgOrderCount) {
Position = BCfgOrderCount;
}
if (!File || !Desc) {
Print (L"bcfg: missing parameter for 'add' operation\n");
Print (L"cfg: driver|boot add # file \"desc\"\n");
goto Done;
}
/*
* Get file info
*/
ShellFileMetaArg (File, &FileList);
/*
* If filename expadned to multiple names, fail
*/
if (FileList.Flink->Flink != &FileList) {
Print (L"bcfg: too many source files\n");
goto Done;
}
Arg = CR(FileList.Flink, SHELL_FILE_ARG, Link, SHELL_FILE_ARG_SIGNATURE);
Status = Arg->Status;
if (EFI_ERROR(Status)) {
Print (L"bcfg: file %hs - %r\n", Arg->FileName, Status);
goto Done;
}
/*
* Build FilePath to the filename
*/
/* split full name at device string */
for(p=Arg->FullName; *p && *p != ':'; p++) ;
if (!*p) {
Print (L"bcfg: unsupported file name '%hs'\n", Arg->FullName);
Status = EFI_UNSUPPORTED;
goto Done;
}
/* get the device path */
*p = 0;
DevicePath = (EFI_DEVICE_PATH *) ShellGetMap(Arg->FullName);
if (!DevicePath) {
Print (L"bcfg: no device path for %s\n", Arg->FullName);
Status = EFI_UNSUPPORTED;
goto Done;
}
/* append the file */
FileNode = FileDevicePath(NULL, p+1);
FilePath = AppendDevicePath(DevicePath, FileNode);
/*
* Find a free target # (bugbug: brute force implementation)
*/
Found = FALSE;
for (Target=1; Target < 0xFFFF; Target += 1) {
Found = TRUE;
for (Index=0; Index < BCfgOrderCount; Index += 1) {
if (BCfgOrder[Index] == Target) {
Found = FALSE;
break;
}
}
if (Found) {
break;
}
}
if (Target == 0xFFFF) {
Print (L"bcfg: Failed to find available variable name\n");
goto Done;
}
Print (L"Target = %d\n", Target);
/*
* Add the option
*/
DescSize = StrSize(Desc);
FilePathSize = DevicePathSize(FilePath);
p8 = BCfgData;
*((UINT32 *) p8) = 0; /* Attributes */
p8 += sizeof (UINT32);
CopyMem (p8, Desc, DescSize);
p8 += DescSize;
CopyMem (p8, FilePath, FilePathSize);
SPrint (OptionStr, sizeof(OptionStr), BCfgSelOption, Target);
Status = RT->SetVariable (
OptionStr,
&EfiGlobalVariable,
BCfgAttributes,
sizeof(UINT32) + DescSize + FilePathSize,
BCfgData
);
if (EFI_ERROR(Status)) {
Print (L"bcfg: failed to add %hs - %hr\n", OptionStr, Status);
goto Done;
}
/*
* Insert target into order list
*/
BCfgOrderCount += 1;
for (Index=BCfgOrderCount-1; Index > Position; Index -= 1) {
BCfgOrder[Index] = BCfgOrder[Index-1];
}
BCfgOrder[Position] = (UINT16) Target;
Status = RT->SetVariable (
BCfgSelOrder,
&EfiGlobalVariable,
BCfgAttributes,
BCfgOrderCount * sizeof(UINT16),
BCfgOrder
);
if (EFI_ERROR(Status)) {
Print (L"bcfg: failed to update %hs - %hr\n", BCfgSelOrder, Status);
goto Done;
}
/*
* Done
*/
Print (L"bcfg: %s added as %d\n", BCfgSelName, Position+1);
Done:
if (FileNode) {
FreePool (FileNode);
}
if (FilePath) {
FreePool (FilePath);
}
if (Str) {
FreePool(Str);
}
ShellFreeFileList (&FileList);
}
VOID
BCfgRemove (
IN UINTN Position
)
{
CHAR16 OptionStr[40];
EFI_STATUS Status;
UINTN Index;
UINT16 Target;
if (Position < 1 || Position > BCfgOrderCount) {
Print (L"bcfg: %hd not removed. Value is out of range\n", Position);
return ;
}
Target = BCfgOrder[Position-1];
/*
* remove from order list
*/
BCfgOrderCount = BCfgOrderCount - 1;
for (Index=Position-1; Index < BCfgOrderCount; Index += 1) {
BCfgOrder[Index] = BCfgOrder[Index+1];
}
Status = RT->SetVariable (
BCfgSelOrder,
&EfiGlobalVariable,
BCfgAttributes,
BCfgOrderCount * sizeof(UINT16),
BCfgOrder
);
/*
* Remove the option
*/
SPrint (OptionStr, sizeof(OptionStr), BCfgSelOption, Target);
RT->SetVariable (OptionStr, &EfiGlobalVariable, BCfgAttributes, 0, NULL);
/*
* Done
*/
if (EFI_ERROR(Status)) {
Print (L"bcfg: failed to remove - %hr\n", Status);
} else {
Print (L"bcfg: %s %d removed\n", BCfgSelName, Position);
}
}
VOID
BCfgMove (
IN UINTN Src,
IN UINTN Dest
)
{
UINT16 Target;
UINTN Index;
EFI_STATUS Status;
if (Src < 1 || Src > BCfgOrderCount) {
Print (L"bcfg: %hd not moved. Value is out of range\n", Src);
return ;
}
if (Dest < 1) {
Dest = 1;
}
if (Dest > BCfgOrderCount) {
Dest = BCfgOrderCount;
}
/*
*
*/
Src = Src - 1;
Dest = Dest - 1;
Target = BCfgOrder[Src];
/*
* Remove the item
*/
for (Index=Src; Index < BCfgOrderCount-1; Index += 1) {
BCfgOrder[Index] = BCfgOrder[Index+1];
}
/*
* Insert it
*/
for (Index=BCfgOrderCount-1; Index > Dest; Index -= 1) {
BCfgOrder[Index] = BCfgOrder[Index-1];
}
BCfgOrder[Dest] = Target;
/*
* Update the order
*/
Status = RT->SetVariable (
BCfgSelOrder,
&EfiGlobalVariable,
BCfgAttributes,
BCfgOrderCount * sizeof(UINT16),
BCfgOrder
);
/*
* Done
*/
if (EFI_ERROR(Status)) {
Print (L"bcfg: failed to move option - %hr\n", Status);
} else {
Print (L"bcfg: %s %d moved to %d\n", BCfgSelName, Src+1, Dest+1);
}
}
VOID
BCfgDumpBootList (
IN CHAR16 *BootOrder,
IN CHAR16 *BootOption
)
{
EFI_STATUS Status;
UINTN DataSize;
UINT32 Attributes;
CHAR16 OptionStr[40];
BCFG_LOAD_OPTION *Option;
UINTN Index;
for (Index=0; Index < BCfgOrderCount; Index++) {
SPrint (OptionStr, sizeof(OptionStr), BootOption, BCfgOrder[Index]);
DataSize = MAX_ENV_SIZE;
Status = RT->GetVariable (
OptionStr,
&EfiGlobalVariable,
&Attributes,
&DataSize,
BCfgData
);
Print (L"%02x. ", Index+1);
if (!EFI_ERROR(Status)) {
Option = BCfgParseLoadOption ((UINT8 *) BCfgData, DataSize);
if (!Option) {
Print (L"%Hcould not parse option%N\n");
continue;
}
Print (L"%s %H\"%ns\"%s%N\n",
Option->FilePathStr,
Option->Description,
Option->LoadOptionsSize ? L" OPT" : L""
);
BCfgFreeLoadOption (Option);
} else {
Print (L"%hr\n", Status);
}
}
}
BCFG_LOAD_OPTION *
BCfgParseLoadOption (
UINT8 *Data,
UINTN DataSize
)
{
BCFG_LOAD_OPTION *Option;
BOOLEAN Valid;
UINT8 *End;
EFI_DEVICE_PATH *DevicePathNode;
Valid = FALSE;
Option = AllocateZeroPool(sizeof(BCFG_LOAD_OPTION));
/*
* Parse the load option into the Option structure
*/
if (DataSize < 10) {
goto Done;
}
/*
* First 32 bits are the load option attributes
*/
CopyMem (&Option->Attributes, Data, sizeof(UINT32));
Data += sizeof(UINT32);
DataSize -= sizeof(UINT32);
/*
* Next is a null terminated string
*/
Option->Description = AllocatePool(DataSize);
CopyMem (Option->Description, Data, DataSize);
/* find the string terminator */
Data = (UINT8 *) Option->Description;
End = Data + DataSize;
while (*((CHAR16 *) Data)) {
if (Data > End - sizeof(CHAR16) - 1) {
goto Done;
}
Data += sizeof(UINT16);
}
Data += sizeof(UINT16);
DataSize = End - Data;
/*
* Next is the file path
*/
Option->FilePath = AllocatePool (DataSize);
CopyMem (Option->FilePath, Data, DataSize);
/* find the end of path terminator */
DevicePathNode = (EFI_DEVICE_PATH *) Data;
while (!IsDevicePathEnd (DevicePathNode)) {
DevicePathNode = NextDevicePathNode (DevicePathNode);
if ((UINT8 *) DevicePathNode > End - sizeof(EFI_DEVICE_PATH)) {
goto Done;
}
}
Data = ((UINT8 *) DevicePathNode) + sizeof(EFI_DEVICE_PATH);
DataSize = End - Data;
/*
* Next is the load options
*/
if (DataSize) {
Option->LoadOptions = Data;
Option->LoadOptionsSize = DataSize;
}
/*
* Expand the FilePath to a string
*/
Option->FilePathStr = DevicePathToStr(Option->FilePath);
Valid = TRUE;
Done:
if (!Valid && Option) {
BCfgFreeLoadOption (Option);
Option = NULL;
}
return Option;
}
VOID
BCfgFreeLoadOption (
BCFG_LOAD_OPTION *Option
)
{
if (Option->Description) {
FreePool (Option->Description);
}
if (Option->FilePath) {
FreePool (Option->FilePath);
}
if (Option->FilePathStr) {
FreePool (Option->FilePathStr);
}
FreePool (Option);
}