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authoroliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524>2011-09-09 10:54:33 +0000
committeroliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524>2011-09-09 10:54:33 +0000
commit4aa2417061f832009b92aac786ed7307ce088503 (patch)
tree16e5e567b9462b6bbae1458944e64bb9bde32a22 /ArmPkg/Library
parent2755d844f9ccc57108b49d5f91f38085de01760a (diff)
downloadedk2-platforms-4aa2417061f832009b92aac786ed7307ce088503.tar.xz
ArmPkg/BdsLib: Move some functions used to create/update BDS Boot Entry from ArmPlatformPkg/Bds to ArmPkg/BdsLib
These functions can be reused by any EFI application to add/update a BDS Boot Entry. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12314 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Library')
-rw-r--r--ArmPkg/Library/BdsLib/BdsHelper.c53
-rw-r--r--ArmPkg/Library/BdsLib/BdsInternal.h26
-rw-r--r--ArmPkg/Library/BdsLib/BdsLib.inf2
3 files changed, 70 insertions, 11 deletions
diff --git a/ArmPkg/Library/BdsLib/BdsHelper.c b/ArmPkg/Library/BdsLib/BdsHelper.c
index a006e90db4..d971a76b71 100644
--- a/ArmPkg/Library/BdsLib/BdsHelper.c
+++ b/ArmPkg/Library/BdsLib/BdsHelper.c
@@ -289,3 +289,56 @@ PrintPerformance (
CharCount = AsciiSPrint (Buffer,sizeof (Buffer),"Total Time = %ld ms\n\n", DivU64x64Remainder (MultU64x32 (TimeStamp, 1000), TicksPerSecond, NULL));
SerialPortWrite ((UINT8 *) Buffer, CharCount);
}
+
+EFI_STATUS
+GetEnvironmentVariable (
+ IN CONST CHAR16* VariableName,
+ IN VOID* DefaultValue,
+ IN OUT UINTN* Size,
+ OUT VOID** Value
+ )
+{
+ EFI_STATUS Status;
+ UINTN VariableSize;
+
+ // Try to get the variable size.
+ *Value = NULL;
+ VariableSize = 0;
+ Status = gRT->GetVariable ((CHAR16 *) VariableName, &gEfiGlobalVariableGuid, NULL, &VariableSize, *Value);
+ if (Status == EFI_NOT_FOUND) {
+ if ((DefaultValue != NULL) && (Size != NULL) && (*Size != 0)) {
+ // If the environment variable does not exist yet then set it with the default value
+ Status = gRT->SetVariable (
+ (CHAR16*)VariableName,
+ &gEfiGlobalVariableGuid,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
+ *Size,
+ DefaultValue
+ );
+ *Value = DefaultValue;
+ } else {
+ return EFI_NOT_FOUND;
+ }
+ } else if (Status == EFI_BUFFER_TOO_SMALL) {
+ // Get the environment variable value
+ *Value = AllocatePool (VariableSize);
+ if (*Value == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = gRT->GetVariable ((CHAR16 *)VariableName, &gEfiGlobalVariableGuid, NULL, &VariableSize, *Value);
+ if (EFI_ERROR (Status)) {
+ FreePool(*Value);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Size) {
+ *Size = VariableSize;
+ }
+ } else {
+ *Value = DefaultValue;
+ return Status;
+ }
+
+ return EFI_SUCCESS;
+}
diff --git a/ArmPkg/Library/BdsLib/BdsInternal.h b/ArmPkg/Library/BdsLib/BdsInternal.h
index af69049576..d450e8e6b2 100644
--- a/ArmPkg/Library/BdsLib/BdsInternal.h
+++ b/ArmPkg/Library/BdsLib/BdsInternal.h
@@ -25,7 +25,10 @@
#include <Library/DebugLib.h>
#include <Library/BdsLib.h>
#include <Library/PerformanceLib.h>
+#include <Library/PrintLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Guid/GlobalVariable.h>
#include <Guid/FileInfo.h>
#include <Protocol/DevicePath.h>
@@ -37,19 +40,19 @@
typedef BOOLEAN (*BDS_FILE_LOADER_SUPPORT) (
- IN EFI_DEVICE_PATH *DevicePath,
- IN EFI_HANDLE Handle,
- IN EFI_DEVICE_PATH *RemainingDevicePath
- );
+ IN EFI_DEVICE_PATH *DevicePath,
+ IN EFI_HANDLE Handle,
+ IN EFI_DEVICE_PATH *RemainingDevicePath
+ );
typedef EFI_STATUS (*BDS_FILE_LOADER_LOAD_IMAGE) (
- IN EFI_DEVICE_PATH *DevicePath,
- IN EFI_HANDLE Handle,
- IN EFI_DEVICE_PATH *RemainingDevicePath,
- IN EFI_ALLOCATE_TYPE Type,
- IN OUT EFI_PHYSICAL_ADDRESS* Image,
- OUT UINTN *ImageSize
- );
+ IN EFI_DEVICE_PATH *DevicePath,
+ IN EFI_HANDLE Handle,
+ IN EFI_DEVICE_PATH *RemainingDevicePath,
+ IN EFI_ALLOCATE_TYPE Type,
+ IN OUT EFI_PHYSICAL_ADDRESS* Image,
+ OUT UINTN *ImageSize
+ );
typedef struct {
BDS_FILE_LOADER_SUPPORT Support;
@@ -78,6 +81,7 @@ VOID
PrintPerformance (
VOID
);
+
EFI_STATUS
BdsLoadImage (
IN EFI_DEVICE_PATH *DevicePath,
diff --git a/ArmPkg/Library/BdsLib/BdsLib.inf b/ArmPkg/Library/BdsLib/BdsLib.inf
index b9b20060c5..595e943fb7 100644
--- a/ArmPkg/Library/BdsLib/BdsLib.inf
+++ b/ArmPkg/Library/BdsLib/BdsLib.inf
@@ -24,6 +24,7 @@
BdsLinuxLoader.c
BdsAppLoader.c
BdsHelper.c
+ BdsLoadOption.c
[Packages]
MdePkg/MdePkg.dec
@@ -52,6 +53,7 @@
gEfiPxeBaseCodeProtocolGuid
gEfiDiskIoProtocolGuid
gEfiUsbIoProtocolGuid
+ gEfiLoadedImageProtocolGuid
[FeaturePcd]