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| author | Ruiyu Ni <ruiyu.ni@intel.com> | 2016-11-15 18:02:32 +0800 |
|---|---|---|
| committer | Ruiyu Ni <ruiyu.ni@intel.com> | 2016-11-18 10:42:04 +0800 |
| commit | 0dc3fb06b270ee8b370c5b219ce590fcfe66d551 (patch) | |
| tree | 9dba67cde2a1097e7cfab8ad1abb0e772bc24cbd /MdeModulePkg/Universal/BdsDxe | |
| parent | de67c35c8a074500e1db86829e9aa164b7cf4b9d (diff) | |
| download | edk2-0dc3fb06b270ee8b370c5b219ce590fcfe66d551.tar.gz edk2-0dc3fb06b270ee8b370c5b219ce590fcfe66d551.tar.bz2 edk2-0dc3fb06b270ee8b370c5b219ce590fcfe66d551.zip | |
MdeModulePkg/BdsDxe: Avoid overwriting PlatformRecovery####
Current implementation always creates PlatformRecovery0000
pointing to \EFI\BOOT\BOOT$(ARCH).efi but it may overwrite
PlatformRecovery#### created before (maybe by a DXE driver).
The patch only uses the smallest unused option number for
the \EFI\BOOT\BOOT$(ARCH).efi PlatformRecovery#### to avoid
overwriting already-created PlatformRecovery####.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jie Lin <jie.lin@intel.com>
Reviewed-by: Sunny Wang <sunnywang@hpe.com>
Diffstat (limited to 'MdeModulePkg/Universal/BdsDxe')
| -rw-r--r-- | MdeModulePkg/Universal/BdsDxe/BdsEntry.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/MdeModulePkg/Universal/BdsDxe/BdsEntry.c b/MdeModulePkg/Universal/BdsDxe/BdsEntry.c index 32bcbf342e..98b3931093 100644 --- a/MdeModulePkg/Universal/BdsDxe/BdsEntry.c +++ b/MdeModulePkg/Universal/BdsDxe/BdsEntry.c @@ -837,7 +837,7 @@ BdsEntry ( FilePath = FileDevicePath (NULL, EFI_REMOVABLE_MEDIA_FILE_NAME);
Status = EfiBootManagerInitializeLoadOption (
&LoadOption,
- 0,
+ LoadOptionNumberUnassigned,
LoadOptionTypePlatformRecovery,
LOAD_OPTION_ACTIVE,
L"Default PlatformRecovery",
@@ -846,9 +846,24 @@ BdsEntry ( 0
);
ASSERT_EFI_ERROR (Status);
- EfiBootManagerLoadOptionToVariable (&LoadOption);
+ LoadOptions = EfiBootManagerGetLoadOptions (&LoadOptionCount, LoadOptionTypePlatformRecovery);
+ if (EfiBootManagerFindLoadOption (&LoadOption, LoadOptions, LoadOptionCount) == -1) {
+ for (Index = 0; Index < LoadOptionCount; Index++) {
+ //
+ // The PlatformRecovery#### options are sorted by OptionNumber.
+ // Find the the smallest unused number as the new OptionNumber.
+ //
+ if (LoadOptions[Index].OptionNumber != Index) {
+ break;
+ }
+ }
+ LoadOption.OptionNumber = Index;
+ Status = EfiBootManagerLoadOptionToVariable (&LoadOption);
+ ASSERT_EFI_ERROR (Status);
+ }
EfiBootManagerFreeLoadOption (&LoadOption);
FreePool (FilePath);
+ EfiBootManagerFreeLoadOptions (LoadOptions, LoadOptionCount);
//
// Report Status Code to indicate connecting drivers will happen
|