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IntelFrameworkModulePkg/GenericBdsLib: remove AcpiS3->S3Save() call

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The AcpiS3->S3Save() call needs to occur before the end-of-DXE event
is signalled. The end-of-DXE event needs to be signalled prior to
invoking any UEFI drivers, applications, or connecting consoles.

This means the call to S3Save() that occurs in BdsLibBootViaBootOption()
violates the ordering constraints, and should be removed. Since it is
the responsibility of the platform BDS to signal the end-of-DXE event,
it should also perform the AcpiS3->S3Save() call at an appropriate time.

Commit message update from Laszlo Ersek <lersek@redhat.com>:

Following Jiewen Yao's idea in

 http://thread.gmane.org/gmane.comp.bios.tianocore.devel/16088/focus=16146

platforms that
(1) use this exact instance of GenericBdsLib, *and*
(2) support S3

should now collect the S3 state
(3) in an End-of-Dxe callback in their AcpiS3SaveDxe drivers, *or*
(4) with an explicit AcpiS3->S3Save() call made to their AcpiS3SaveDxe
    drivers from their PlatformBdsLib instances.

OvmfPkg, which uses this GenericBdsLib instance, and has its own
AcpiS3SaveDxe fork, follows (3).

Vlv2TbltDevicePkg, which has a GenericBdsLib fork, and uses
IntelFrameworkModulePkg/Universal/Acpi/AcpiS3SaveDxe, follows (4).

There are no other platforms in the public edk2 repository that support
S3.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <Jiewen.Yao@intel.com>
[lersek@redhat.com: updated commit message]
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Jiewen Yao <Jiewen.Yao@intel.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18036 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel 2015-07-26 08:02:19 +00:00 committed by jljusten
parent 896352e5f2
commit 155f9d424c
3 changed files with 0 additions and 12 deletions
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10
IntelFrameworkModulePkg/Library/GenericBdsLib/BdsBoot.c
View File

@ -2233,22 +2233,12 @@ BdsLibBootViaBootOption (
EFI_DEVICE_PATH_PROTOCOL *FilePath;
EFI_LOADED_IMAGE_PROTOCOL *ImageInfo;
EFI_DEVICE_PATH_PROTOCOL *WorkingDevicePath;
EFI_ACPI_S3_SAVE_PROTOCOL *AcpiS3Save;
LIST_ENTRY TempBootLists;
EFI_BOOT_LOGO_PROTOCOL *BootLogo;
*ExitDataSize = 0;
*ExitData = NULL;
//
// Notes: this code can be remove after the s3 script table
// hook on the event EVT_SIGNAL_READY_TO_BOOT or
// EVT_SIGNAL_LEGACY_BOOT
//
Status = gBS->LocateProtocol (&gEfiAcpiS3SaveProtocolGuid, NULL, (VOID **) &AcpiS3Save);
if (!EFI_ERROR (Status)) {
AcpiS3Save->S3Save (AcpiS3Save, NULL);
}
//
// If it's Device Path that starts with a hard drive path, append it with the front part to compose a
// full device path

1
IntelFrameworkModulePkg/Library/GenericBdsLib/GenericBdsLib.inf
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@ -119,7 +119,6 @@
gEfiLegacyBiosProtocolGuid ## SOMETIMES_CONSUMES
gEfiCpuArchProtocolGuid ## CONSUMES
gEfiDevicePathProtocolGuid ## CONSUMES
gEfiAcpiS3SaveProtocolGuid ## SOMETIMES_CONSUMES
gEfiGraphicsOutputProtocolGuid ## SOMETIMES_CONSUMES
gEfiUgaDrawProtocolGuid |gEfiMdePkgTokenSpaceGuid.PcdUgaConsumeSupport ## SOMETIMES_CONSUMES
gEfiOEMBadgingProtocolGuid ## SOMETIMES_CONSUMES

1
IntelFrameworkModulePkg/Library/GenericBdsLib/InternalBdsLib.h
View File

@ -33,7 +33,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Protocol/SimpleNetwork.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/PciIo.h>
#include <Protocol/AcpiS3Save.h>
#include <Protocol/OEMBadging.h>
#include <Protocol/GraphicsOutput.h>
#include <Protocol/UgaDraw.h>