+ Sami for ArmPkg review
> -----Original Message-----
> From: Grzegorz Bernacki <g...@semihalf.com>
> Sent: Monday, August 16, 2021 6:09 AM
> To: devel@edk2.groups.io
> Cc: l...@nuviainc.com; ardb+tianoc...@kernel.org; Samer El-Haj-Mahmoud
> <samer.el-haj-mahm...@arm.com>; Sunny Wang
> <sunny.w...@arm.com>; m...@semihalf.com; upstr...@semihalf.com;
> Grzegorz Bernacki <g...@semihalf.com>
> Subject: [edk2-platforms PATCH v2] ArmPkg: Enable boot discovery policy for
> ARM package.
>
> This commit adds code which check BootDiscoveryPolicy variable and
> calls Boot Policy Manager Protocol to connect device specified by
> the variable. To enable that mechanism for platform
> EfiMdeModulePkgTokenSpaceGuid.PcdBootDiscoveryPolicy PCD must be
> added to DSC file and BootDiscoveryPolicyUiLib should be added to
> UiApp libraries.
>
> Signed-off-by: Grzegorz Bernacki <g...@semihalf.com>
> ---
> ArmPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf | 5
> +
> ArmPkg/Library/PlatformBootManagerLib/PlatformBm.c | 96
> +++++++++++++++++++-
> 2 files changed, 100 insertions(+), 1 deletion(-)
>
> diff --git
> a/ArmPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> b/ArmPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> index 353d7a967b..86751b45f8 100644
> --- a/ArmPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> +++
> b/ArmPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> @@ -65,11 +65,15 @@
>
> [Pcd]
> gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut
> + gEfiMdeModulePkgTokenSpaceGuid.PcdBootDiscoveryPolicy
>
> [Guids]
> + gBootDiscoveryPolicyMgrFormsetGuid
> gEdkiiNonDiscoverableEhciDeviceGuid
> gEdkiiNonDiscoverableUhciDeviceGuid
> gEdkiiNonDiscoverableXhciDeviceGuid
> + gEfiBootManagerPolicyNetworkGuid
> + gEfiBootManagerPolicyConnectAllGuid
> gEfiFileInfoGuid
> gEfiFileSystemInfoGuid
> gEfiFileSystemVolumeLabelInfoIdGuid
> @@ -79,6 +83,7 @@
>
> [Protocols]
> gEdkiiNonDiscoverableDeviceProtocolGuid
> + gEfiBootManagerPolicyProtocolGuid
> gEfiDevicePathProtocolGuid
> gEfiGraphicsOutputProtocolGuid
> gEfiLoadedImageProtocolGuid
> diff --git a/ArmPkg/Library/PlatformBootManagerLib/PlatformBm.c
> b/ArmPkg/Library/PlatformBootManagerLib/PlatformBm.c
> index 5ceb23d822..ef5c323743 100644
> --- a/ArmPkg/Library/PlatformBootManagerLib/PlatformBm.c
> +++ b/ArmPkg/Library/PlatformBootManagerLib/PlatformBm.c
> @@ -2,9 +2,10 @@
> Implementation for PlatformBootManagerLib library class interfaces.
>
> Copyright (C) 2015-2016, Red Hat, Inc.
> - Copyright (c) 2014 - 2019, ARM Ltd. All rights reserved.<BR>
> + Copyright (c) 2014 - 2021, ARM Ltd. All rights reserved.<BR>
> Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
> Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
> + Copyright (c) 2021, Semihalf All rights reserved.<BR>
>
> SPDX-License-Identifier: BSD-2-Clause-Patent
>
> @@ -19,6 +20,7 @@
> #include <Library/UefiBootManagerLib.h>
> #include <Library/UefiLib.h>
> #include <Library/UefiRuntimeServicesTableLib.h>
> +#include <Protocol/BootManagerPolicy.h>
> #include <Protocol/DevicePath.h>
> #include <Protocol/EsrtManagement.h>
> #include <Protocol/GraphicsOutput.h>
> @@ -27,6 +29,7 @@
> #include <Protocol/PciIo.h>
> #include <Protocol/PciRootBridgeIo.h>
> #include <Protocol/PlatformBootManager.h>
> +#include <Guid/BootDiscoveryPolicy.h>
> #include <Guid/EventGroup.h>
> #include <Guid/NonDiscoverableDevice.h>
> #include <Guid/TtyTerm.h>
> @@ -703,6 +706,91 @@ HandleCapsules (
>
> #define VERSION_STRING_PREFIX L"Tianocore/EDK2 firmware version "
>
> +/**
> + This functions checks the value of BootDiscoverPolicy variable and
> + connect devices of class specified by that variable. Then it refreshes
> + Boot order for newly discovered boot device.
> +
> + @retval EFI_SUCCESS Devices connected successfully or connection
> + not required.
> + @retval others Return values from GetVariable(), LocateProtocol()
> + and ConnectDeviceClass().
> +**/
> +STATIC
> +EFI_STATUS
> +BootDiscoveryPolicyHandler (
> + VOID
> + )
> +{
> + EFI_STATUS Status;
> + UINT32 DiscoveryPolicy;
> + UINTN Size;
> + EFI_BOOT_MANAGER_POLICY_PROTOCOL *BMPolicy;
> + EFI_GUID *Class;
> +
> + Size = sizeof (DiscoveryPolicy);
> + Status = gRT->GetVariable (
> + BOOT_DISCOVERY_POLICY_VAR,
> + &gBootDiscoveryPolicyMgrFormsetGuid,
> + NULL,
> + &Size,
> + &DiscoveryPolicy
> + );
> + if (Status == EFI_NOT_FOUND) {
> + Status = PcdSet32S (PcdBootDiscoveryPolicy, PcdGet32
> (PcdBootDiscoveryPolicy));
> + if (Status == EFI_NOT_FOUND) {
> + return EFI_SUCCESS;
> + } else if (EFI_ERROR (Status)) {
> + return Status;
> + }
> + DiscoveryPolicy = PcdGet32 (PcdBootDiscoveryPolicy);
> + } else if (EFI_ERROR (Status)) {
> + return Status;
> + }
> +
> + if (DiscoveryPolicy == BDP_CONNECT_MINIMAL) {
> + return EFI_SUCCESS;
> + }
> +
> + switch (DiscoveryPolicy) {
> + case BDP_CONNECT_NET:
> + Class = &gEfiBootManagerPolicyNetworkGuid;
> + break;
> + case BDP_CONNECT_ALL:
> + Class = &gEfiBootManagerPolicyConnectAllGuid;
> + break;
> + default:
> + DEBUG ((
> + DEBUG_INFO,
> + "%a - Unexpected DiscoveryPolicy (0x%x). Run Minimal Discovery
> Policy\n",
> + __FUNCTION__,
> + DiscoveryPolicy
> + ));
> + return EFI_SUCCESS;
> + }
> +
> + Status = gBS->LocateProtocol (
> + &gEfiBootManagerPolicyProtocolGuid,
> + NULL,
> + (VOID **)&BMPolicy
> + );
> + if (EFI_ERROR (Status)) {
> + DEBUG ((DEBUG_INFO, "%a - Failed to locate
> gEfiBootManagerPolicyProtocolGuid."
> + "Driver connect will be skipped.\n", __FUNCTION__));
> + return Status;
> + }
> +
> + Status = BMPolicy->ConnectDeviceClass (BMPolicy, Class);
> + if (EFI_ERROR (Status)){
> + DEBUG ((DEBUG_ERROR, "%a - ConnectDeviceClass returns - %r\n",
> __FUNCTION__, Status));
> + return Status;
> + }
> +
> + EfiBootManagerRefreshAllBootOption();
> +
> + return EFI_SUCCESS;
> +}
> +
> /**
> Do the platform specific action after the console is ready
> Possible things that can be done in PlatformBootManagerAfterConsole:
> @@ -753,6 +841,12 @@ PlatformBootManagerAfterConsole (
> }
> }
>
> + //
> + // Connect device specified by BootDiscoverPolicy variable and
> + // refresh Boot order for newly discovered boot devices
> + //
> + BootDiscoveryPolicyHandler ();
> +
> //
> // On ARM, there is currently no reason to use the phased capsule
> // update approach where some capsules are dispatched before EndOfDxe
> --
> 2.25.1
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