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MdeModulePkg/BDS: Do not pass unnecessary option to boot option 

BDS puts a special GUID in boot option optional data for
auto-discovered boot option. But when launching that boot
option, the BDS core unconditionally pass the special GUID
to the executable.

A good written application/OS loader can ignore the unexpected
parameters, but BDS core should still avoid passing the
unnecessary GUID.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19007 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ruiyu Ni 2015-11-30 03:08:49 +00:00 committed by niruiyu
parent 81438fe8d0
commit 404bd44294
1 changed files with 27 additions and 5 deletions
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32
MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
View File

@ -52,6 +52,28 @@ EfiBootManagerRegisterLegacyBootSupport (
mBmLegacyBoot = LegacyBoot;
}
/**
Return TRUE when the boot option is auto-created instead of manually added.
@param BootOption Pointer to the boot option to check.
@retval TRUE The boot option is auto-created.
@retval FALSE The boot option is manually added.
**/
BOOLEAN
BmIsAutoCreateBootOption (
EFI_BOOT_MANAGER_LOAD_OPTION *BootOption
)
{
if ((BootOption->OptionalDataSize == sizeof (EFI_GUID)) &&
CompareGuid ((EFI_GUID *) BootOption->OptionalData, &mBmAutoCreateBootOptionGuid)
) {
return TRUE;
} else {
return FALSE;
}
}
/**
For a bootable Device path, return its boot type.
@ -1814,8 +1836,10 @@ EfiBootManagerBoot (
Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &ImageInfo);
ASSERT_EFI_ERROR (Status);
ImageInfo->LoadOptionsSize = BootOption->OptionalDataSize;
ImageInfo->LoadOptions = BootOption->OptionalData;
if (!BmIsAutoCreateBootOption (BootOption)) {
ImageInfo->LoadOptionsSize = BootOption->OptionalDataSize;
ImageInfo->LoadOptions = BootOption->OptionalData;
}
//
// Clean to NULL because the image is loaded directly from the firmwares boot manager.
@ -2231,9 +2255,7 @@ EfiBootManagerRefreshAllBootOption (
for (Index = 0; Index < NvBootOptionCount; Index++) {
if (((DevicePathType (NvBootOptions[Index].FilePath) != BBS_DEVICE_PATH) ||
(DevicePathSubType (NvBootOptions[Index].FilePath) != BBS_BBS_DP)
) &&
(NvBootOptions[Index].OptionalDataSize == sizeof (EFI_GUID)) &&
CompareGuid ((EFI_GUID *) NvBootOptions[Index].OptionalData, &mBmAutoCreateBootOptionGuid)
) && BmIsAutoCreateBootOption (&NvBootOptions[Index])
) {
//
// Only check those added by BDS