/**
This function will register the new Boot####, Driver#### or SysPrep#### option.
After the *#### is updated, the *Order will also be updated.
@param Option Pointer to load option to add.
@param Position Position of the new load option to put in the ****Order variable.
@retval EFI_SUCCESS The *#### have been successfully registered.
@retval EFI_INVALID_PARAMETER The option number exceeds 0xFFFF.
@retval EFI_ALREADY_STARTED The option number of Option is being used already.
Note: this API only adds new load option, no replacement support.
@retval EFI_OUT_OF_RESOURCES There is no free option number that can be used when the
option number specified in the Option is LoadOptionNumberUnassigned.
@retval EFI_STATUS Return the status of gRT->SetVariable ().
**/
EFI_STATUS
EFIAPI
EfiBootManagerAddLoadOptionVariable (
IN EFI_BOOT_MANAGER_LOAD_OPTION *Option,
IN UINTN Position
)
{
EFI_STATUS Status;
UINT16 OptionNumber;
if (Option == NULL) {
return EFI_INVALID_PARAMETER;
}
if (Option->OptionType != LoadOptionTypeDriver &&
Option->OptionType != LoadOptionTypeSysPrep &&
Option->OptionType != LoadOptionTypeBoot
) {
return EFI_INVALID_PARAMETER;
}
//
// Get the free option number if the option number is unassigned
//
if (Option->OptionNumber == LoadOptionNumberUnassigned) {
Status = BmGetFreeOptionNumber (Option->OptionType, &OptionNumber);
if (EFI_ERROR (Status)) {
return Status;
}
Option->OptionNumber = OptionNumber;
}
if (Option->OptionNumber >= LoadOptionNumberMax) {
return EFI_INVALID_PARAMETER;
}
Status = BmAddOptionNumberToOrderVariable (mBmLoadOptionOrderName[Option->OptionType], (UINT16) Option->OptionNumber, Position);
if (!EFI_ERROR (Status)) {
//
// Save the Boot#### or Driver#### variable
//
Status = EfiBootManagerLoadOptionToVariable (Option);
if (EFI_ERROR (Status)) {
//
// Remove the #### from *Order variable when the Driver####/SysPrep####/Boot#### cannot be saved.
//
EfiBootManagerDeleteLoadOptionVariable (Option->OptionNumber, Option->OptionType);
}
}
return Status;
}
/**
Delete Boot Option that represent a Deleted state in BootOptionMenu.
@retval EFI_SUCCESS If all boot load option EFI Variables corresponding to
BM_LOAD_CONTEXT marked for deletion is deleted.
@retval EFI_NOT_FOUND If can not find the boot option want to be deleted.
@return Others If failed to update the "BootOrder" variable after deletion.
**/
EFI_STATUS
Var_DelBootOption (
VOID
)
{
BM_MENU_ENTRY *NewMenuEntry;
BM_LOAD_CONTEXT *NewLoadContext;
EFI_STATUS Status;
UINTN Index;
UINTN Index2;
Index2 = 0;
for (Index = 0; Index < BootOptionMenu.MenuNumber; Index++) {
NewMenuEntry = BOpt_GetMenuEntry (&BootOptionMenu, (Index - Index2));
if (NULL == NewMenuEntry) {
return EFI_NOT_FOUND;
}
NewLoadContext = (BM_LOAD_CONTEXT *) NewMenuEntry->VariableContext;
if (!NewLoadContext->Deleted) {
continue;
}
Status = EfiBootManagerDeleteLoadOptionVariable (NewMenuEntry->OptionNumber,LoadOptionTypeBoot);
if (EFI_ERROR (Status)) {
return Status;
}
Index2++;
//
// If current Load Option is the same as BootNext,
// must delete BootNext in order to make sure
// there will be no panic on next boot
//
if (NewLoadContext->IsBootNext) {
EfiLibDeleteVariable (L"BootNext", &gEfiGlobalVariableGuid);
}
RemoveEntryList (&NewMenuEntry->Link);
BOpt_DestroyMenuEntry (NewMenuEntry);
NewMenuEntry = NULL;
}
BootOptionMenu.MenuNumber -= Index2;
return EFI_SUCCESS;
}
/**
Delete Load Option that represent a Deleted state in DriverOptionMenu.
@retval EFI_SUCCESS Load Option is successfully updated.
@retval EFI_NOT_FOUND Fail to find the driver option want to be deleted.
@return Other value than EFI_SUCCESS if failed to update "Driver Order" EFI
Variable.
**/
EFI_STATUS
Var_DelDriverOption (
VOID
)
{
BM_MENU_ENTRY *NewMenuEntry;
BM_LOAD_CONTEXT *NewLoadContext;
EFI_STATUS Status;
UINTN Index;
UINTN Index2;
Index2 = 0;
for (Index = 0; Index < DriverOptionMenu.MenuNumber; Index++) {
NewMenuEntry = BOpt_GetMenuEntry (&DriverOptionMenu, (Index - Index2));
if (NULL == NewMenuEntry) {
return EFI_NOT_FOUND;
}
NewLoadContext = (BM_LOAD_CONTEXT *) NewMenuEntry->VariableContext;
if (!NewLoadContext->Deleted) {
continue;
}
Status = EfiBootManagerDeleteLoadOptionVariable (NewMenuEntry->OptionNumber,LoadOptionTypeDriver);
if (EFI_ERROR (Status)) {
return Status;
}
Index2++;
RemoveEntryList (&NewMenuEntry->Link);
BOpt_DestroyMenuEntry (NewMenuEntry);
NewMenuEntry = NULL;
}
DriverOptionMenu.MenuNumber -= Index2;
return EFI_SUCCESS;
}
EFIAPI
EfiBootManagerGetLoadOptions (
OUT UINTN *OptionCount,
IN EFI_BOOT_MANAGER_LOAD_OPTION_TYPE LoadOptionType
)
{
EFI_STATUS Status;
UINT16 *OptionOrder;
UINTN OptionOrderSize;
UINTN Index;
UINTN OptionIndex;
EFI_BOOT_MANAGER_LOAD_OPTION *Options;
CHAR16 OptionName[BM_OPTION_NAME_LEN];
UINT16 OptionNumber;
*OptionCount = 0;
if (LoadOptionType == LoadOptionTypeDriver || LoadOptionType == LoadOptionTypeSysPrep || LoadOptionType == LoadOptionTypeBoot) {
//
// Read the BootOrder, or DriverOrder variable.
//
GetEfiGlobalVariable2 (mBmLoadOptionOrderName[LoadOptionType], (VOID **) &OptionOrder, &OptionOrderSize);
if (OptionOrder == NULL) {
return NULL;
}
*OptionCount = OptionOrderSize / sizeof (UINT16);
Options = AllocatePool (*OptionCount * sizeof (EFI_BOOT_MANAGER_LOAD_OPTION));
ASSERT (Options != NULL);
OptionIndex = 0;
for (Index = 0; Index < *OptionCount; Index++) {
OptionNumber = OptionOrder[Index];
UnicodeSPrint (OptionName, sizeof (OptionName), L"%s%04x", mBmLoadOptionName[LoadOptionType], OptionNumber);
Status = EfiBootManagerVariableToLoadOption (OptionName, &Options[OptionIndex]);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_INFO, "[Bds] %s doesn't exist - Update ****Order variable to remove the reference!!", OptionName));
EfiBootManagerDeleteLoadOptionVariable (OptionNumber, LoadOptionType);
} else {
ASSERT (Options[OptionIndex].OptionNumber == OptionNumber);
OptionIndex++;
}
}
if (OptionOrder != NULL) {
FreePool (OptionOrder);
}
if (OptionIndex < *OptionCount) {
Options = ReallocatePool (*OptionCount * sizeof (EFI_BOOT_MANAGER_LOAD_OPTION), OptionIndex * sizeof (EFI_BOOT_MANAGER_LOAD_OPTION), Options);
ASSERT (Options != NULL);
*OptionCount = OptionIndex;
}
} else {
return NULL;
}
return Options;
}