On Mon, 15 Apr 2019 at 02:52, Marcin Wojtas <m...@semihalf.com> wrote: > > Hi Ard, > > > pt., 12 kwi 2019 o 23:15 Ard Biesheuvel <ard.biesheu...@linaro.org> > napisał(a): > > > > On Fri, 12 Apr 2019 at 03:20, Marcin Wojtas <m...@semihalf.com> wrote: > > > > > > In order to provide special handling for DT environment, > > > implement custom version of DtLoaderLib, which registers > > > ExitBootServices event upon generic 'DtAcpiPref' variable. > > > The routine is responsible for disabling the PMU workaround, > > > that is valid only for UEFI and OS + APCI. > > > > > > Contributed-under: TianoCore Contribution Agreement 1.1 > > > Signed-off-by: Marcin Wojtas <m...@semihalf.com> > > > --- > > > Silicon/Marvell/Armada7k8k/Armada7k8k.dsc.inc > > > | 2 +- > > > > > > Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.inf > > > | 43 +++++++ > > > Silicon/Marvell/Include/IndustryStandard/MvSmc.h > > > | 2 + > > > > > > Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.c > > > | 130 ++++++++++++++++++++ > > > 4 files changed, 176 insertions(+), 1 deletion(-) > > > create mode 100644 > > > Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.inf > > > create mode 100644 > > > Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.c > > > > > > diff --git a/Silicon/Marvell/Armada7k8k/Armada7k8k.dsc.inc > > > b/Silicon/Marvell/Armada7k8k/Armada7k8k.dsc.inc > > > index 8291582..5ed742f 100644 > > > --- a/Silicon/Marvell/Armada7k8k/Armada7k8k.dsc.inc > > > +++ b/Silicon/Marvell/Armada7k8k/Armada7k8k.dsc.inc > > > @@ -200,7 +200,7 @@ > > > > > > PerformanceLib|MdeModulePkg/Library/DxePerformanceLib/DxePerformanceLib.inf > > > > > > MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf > > > > > > NonDiscoverableDeviceRegistrationLib|MdeModulePkg/Library/NonDiscoverableDeviceRegistrationLib/NonDiscoverableDeviceRegistrationLib.inf > > > - > > > DtPlatformDtbLoaderLib|EmbeddedPkg/Library/DxeDtPlatformDtbLoaderLibDefault/DxeDtPlatformDtbLoaderLibDefault.inf > > > + > > > DtPlatformDtbLoaderLib|Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.inf > > > > > > [LibraryClasses.common.UEFI_APPLICATION] > > > > > > PerformanceLib|MdeModulePkg/Library/DxePerformanceLib/DxePerformanceLib.inf > > > diff --git > > > a/Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.inf > > > > > > b/Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.inf > > > new file mode 100644 > > > index 0000000..ec3f3a5 > > > --- /dev/null > > > +++ > > > b/Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.inf > > > @@ -0,0 +1,43 @@ > > > +/** @file > > > +* > > > +* Copyright (c) 2017, Linaro, Ltd. All rights reserved. > > > +* Copyright (c) 2018, Marvell International Ltd. and its affiliates > > > +* > > > > Please fix the date here as well as below > > > > > +* This program and the accompanying materials > > > +* are licensed and made available under the terms and conditions of the > > > BSD License > > > +* which accompanies this distribution. The full text of the license > > > may be found at > > > +* http://opensource.org/licenses/bsd-license.php > > > +* > > > +* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > > > +* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR > > > IMPLIED. > > > +* > > > +**/ > > > + > > > +[Defines] > > > + INF_VERSION = 0x0001001A > > > + BASE_NAME = DxeDtPlatformDtbLoaderLibDefault > > > + FILE_GUID = dde55569-ad3f-421d-b94b-3be66bb916ce > > > + MODULE_TYPE = DXE_DRIVER > > > + VERSION_STRING = 1.0 > > > + LIBRARY_CLASS = DtPlatformDtbLoaderLib|DXE_DRIVER > > > + > > > +[Sources] > > > + DxeDtPlatformDtbLoaderLib.c > > > + > > > +[Packages] > > > + ArmPkg/ArmPkg.dec > > > + EmbeddedPkg/EmbeddedPkg.dec > > > + MdePkg/MdePkg.dec > > > + Silicon/Marvell/Marvell.dec > > > + > > > +[LibraryClasses] > > > + ArmSmcLib > > > + BaseLib > > > + DebugLib > > > + DxeServicesLib > > > + MemoryAllocationLib > > > + UefiRuntimeServicesTableLib > > > + > > > > Are you really using all of these? > > > > > +[Guids] > > > + gDtPlatformDefaultDtbFileGuid > > > + gDtPlatformFormSetGuid > > > > and these? > > > > > diff --git a/Silicon/Marvell/Include/IndustryStandard/MvSmc.h > > > b/Silicon/Marvell/Include/IndustryStandard/MvSmc.h > > > index 0c90f11..e5c89d9 100644 > > > --- a/Silicon/Marvell/Include/IndustryStandard/MvSmc.h > > > +++ b/Silicon/Marvell/Include/IndustryStandard/MvSmc.h > > > @@ -20,5 +20,7 @@ > > > #define MV_SMC_ID_COMPHY_POWER_OFF 0x82000002 > > > #define MV_SMC_ID_COMPHY_PLL_LOCK 0x82000003 > > > #define MV_SMC_ID_DRAM_SIZE 0x82000010 > > > +#define MV_SMC_ID_PMU_IRQ_ENABLE 0x82000012 > > > +#define MV_SMC_ID_PMU_IRQ_DISABLE 0x82000013 > > > > > > #endif //__MV_SMC_H__ > > > diff --git > > > a/Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.c > > > > > > b/Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.c > > > new file mode 100644 > > > index 0000000..b189f47 > > > --- /dev/null > > > +++ > > > b/Silicon/Marvell/Armada7k8k/Library/DxeDtPlatformDtbLoaderLib/DxeDtPlatformDtbLoaderLib.c > > > @@ -0,0 +1,130 @@ > > > +/** @file > > > +* > > > +* Copyright (c) 2017, Linaro, Ltd. All rights reserved. > > > +* Copyright (c) 2018, Marvell International Ltd. and its affiliates > > > +* > > > +* This program and the accompanying materials > > > +* are licensed and made available under the terms and conditions of the > > > BSD License > > > +* which accompanies this distribution. The full text of the license > > > may be found at > > > +* http://opensource.org/licenses/bsd-license.php > > > +* > > > +* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > > > +* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR > > > IMPLIED. > > > +* > > > +**/ > > > + > > > +#include <PiDxe.h> > > > + > > > +#include <IndustryStandard/MvSmc.h> > > > + > > > +#include <Library/ArmSmcLib.h> > > > +#include <Library/BaseLib.h> > > > +#include <Library/DebugLib.h> > > > +#include <Library/DxeServicesLib.h> > > > +#include <Library/MemoryAllocationLib.h> > > > +#include <Library/UefiBootServicesTableLib.h> > > > +#include <Library/UefiRuntimeServicesTableLib.h> > > > + > > > > Please make sure that all libraries you include are listed in the .inf > > > > > +STATIC EFI_EVENT mArmada7k8kExitBootServicesEvent; > > > + > > > +#define DT_ACPI_SELECT_DT 0x0 > > > +#define DT_ACPI_SELECT_ACPI 0x1 > > > + > > > +typedef struct { > > > + UINT8 Pref; > > > + UINT8 Reserved[3]; > > > +} DT_ACPI_VARSTORE_DATA; > > > + > > > +/** > > > + Disable extra EL3 handling of the PMU interrupts for DT world. > > > + > > > + @param[in] Event Event structure > > > + @param[in] Context Notification context > > > + > > > +**/ > > > +STATIC > > > +VOID > > > +Armada7k8kExitBootEvent ( > > > + IN EFI_EVENT Event, > > > + IN VOID *Context > > > + ) > > > +{ > > > + ARM_SMC_ARGS SmcRegs = {0}; > > > + > > > + SmcRegs.Arg0 = MV_SMC_ID_PMU_IRQ_DISABLE; > > > + ArmCallSmc (&SmcRegs); > > > + > > > + return; > > > +} > > > + > > > +/** > > > + Return a pool allocated copy of the DTB image that is appropriate for > > > + booting the current platform via DT. > > > + > > > + @param[out] Dtb Pointer to the DTB copy > > > + @param[out] DtbSize Size of the DTB copy > > > + > > > + @retval EFI_SUCCESS Operation completed successfully > > > + @retval EFI_NOT_FOUND No suitable DTB image could be > > > located > > > + @retval EFI_OUT_OF_RESOURCES No pool memory available > > > + > > > +**/ > > > +EFI_STATUS > > > +EFIAPI > > > +DtPlatformLoadDtb ( > > > + OUT VOID **Dtb, > > > + OUT UINTN *DtbSize > > > + ) > > > +{ > > > + DT_ACPI_VARSTORE_DATA DtAcpiPref; > > > + ARM_SMC_ARGS SmcRegs = {0}; > > > + EFI_STATUS Status; > > > + VOID *OrigDtb; > > > + VOID *CopyDtb; > > > + UINTN OrigDtbSize; > > > + UINTN BufferSize; > > > + > > > + Status = GetSectionFromAnyFv (&gDtPlatformDefaultDtbFileGuid, > > > + EFI_SECTION_RAW, > > > + 0, > > > + &OrigDtb, > > > + &OrigDtbSize); > > > + if (EFI_ERROR (Status)) { > > > + return EFI_NOT_FOUND; > > > + } > > > + > > > + CopyDtb = AllocateCopyPool (OrigDtbSize, OrigDtb); > > > + if (CopyDtb == NULL) { > > > + return EFI_OUT_OF_RESOURCES; > > > + } > > > + > > > + *Dtb = CopyDtb; > > > + *DtbSize = OrigDtbSize; > > > + > > > + /* Enable EL3 handler for regardless HW description */ > > > + SmcRegs.Arg0 = MV_SMC_ID_PMU_IRQ_ENABLE; > > > + ArmCallSmc (&SmcRegs); > > > + > > > + /* > > > + * Get the current DT/ACPI preference from the DtAcpiPref variable. > > > + * Register ExitBootServices event only in case the DT will be used. > > > + */ > > > + BufferSize = sizeof (DtAcpiPref); > > > + Status = gRT->GetVariable (L"DtAcpiPref", > > > + &gDtPlatformFormSetGuid, > > > + NULL, > > > + &BufferSize, > > > + &DtAcpiPref); > > > + if (EFI_ERROR (Status) || DtAcpiPref.Pref == DT_ACPI_SELECT_DT) { > > > + Status = gBS->CreateEvent (EVT_SIGNAL_EXIT_BOOT_SERVICES, > > > + TPL_NOTIFY, > > > + Armada7k8kExitBootEvent, > > > + NULL, > > > + &mArmada7k8kExitBootServicesEvent); > > > + if (EFI_ERROR (Status)) { > > > + DEBUG ((DEBUG_ERROR, "%a: Fail to register EBS event\n", > > > __FUNCTION__)); > > > + } > > > + } > > > + > > > + return EFI_SUCCESS; > > > +} > > > -- > > > 2.7.4 > > > > > > > Actually, looking at what you are trying to do, can you use the > > gEdkiiPlatformHasAcpiGuid protocol instead of looking at the variable > > directly? That will be installed by the DT platform driver when > > choosing ACPI mode. > > > > It would need to be another driver, but it is more appropriate in any > > case to wire this up in some platform DXE rather than the generic DTB > > loader. > > Ok, I'll move it to DXE. If possible, I'd prefer to use Armada's > PlatformInitDxe - would it be accepatble for you to check > gEdkiiPlatformHasAcpiGuid in ExitBootEvent? >
Yes, but using OnReadyToBoot is more idiomatic for things like this. -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#39116): https://edk2.groups.io/g/devel/message/39116 Mute This Topic: https://groups.io/mt/31056083/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
