Hi Ard,

I thought the R-b from Sunny was enough.

For what is worth, I briefly tested these changes for v4.
Thus:

On 2021.08.03 14:03, Ard Biesheuvel wrote:
On Tue, 3 Aug 2021 at 15:00, Samer El-Haj-Mahmoud
<samer.el-haj-mahm...@arm.com> wrote:

Ard,

Now that the EDK2 changes are merged (aaecef38b9440a65809cbdaf9d97029f4eeb), I 
think these RPi specific changes are ready to be merged as well.


I only see acks from Sunny though. This is why I asked Pete and Andrei
to chime in as well.

-----Original Message-----
From: Grzegorz Bernacki <g...@semihalf.com>
Sent: Monday, August 2, 2021 8:19 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;
p...@akeo.ie; jian.j.w...@intel.com; hao.a...@intel.com;
dandan...@intel.com; eric.d...@intel.com; Grzegorz Bernacki
<g...@semihalf.com>; Sunny Wang <sunny.w...@arm.com>
Subject: [edk2-platforms PATCH v5 1/2] Platform/RaspberryPi: Enable Boot
Discovery Policy.

This commit modify platform boot to check the value of
BootDiscoveryPolicy variable and use BootPolicyManager
Protocol to connect devices specified by the variable.

Signed-off-by: Grzegorz Bernacki <g...@semihalf.com>
Reviewed-by: Sunny Wang <sunny.w...@arm.com>
---
  Platform/RaspberryPi/RPi4/RPi4.dsc                                            
 |  3 +
  Platform/RaspberryPi/RPi4/RPi4.fdf                                            
 |  1 +

Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBootManag
erLib.inf |  5 ++
  Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBm.c
| 91 ++++++++++++++++++++
  4 files changed, 100 insertions(+)

diff --git a/Platform/RaspberryPi/RPi4/RPi4.dsc
b/Platform/RaspberryPi/RPi4/RPi4.dsc
index fd73c4d14b..8b9beac64a 100644
--- a/Platform/RaspberryPi/RPi4/RPi4.dsc
+++ b/Platform/RaspberryPi/RPi4/RPi4.dsc
@@ -555,6 +555,7 @@

gEfiMdeModulePkgTokenSpaceGuid.PcdConOutColumn|L"Columns"|gRasp
berryPiTokenSpaceGuid|0x0|80

gEfiMdeModulePkgTokenSpaceGuid.PcdSetupConOutRow|L"Rows"|gRaspb
erryPiTokenSpaceGuid|0x0|25

gEfiMdeModulePkgTokenSpaceGuid.PcdConOutRow|L"Rows"|gRaspberryPi
TokenSpaceGuid|0x0|25
+
gEfiMdeModulePkgTokenSpaceGuid.PcdBootDiscoveryPolicy|L"BootDiscove
ryPolicy"|gBootDiscoveryPolicyMgrFormsetGuid|0

  [PcdsDynamicDefault.common]
    #
@@ -682,6 +683,7 @@
    #
    # Bds
    #
+
MdeModulePkg/Universal/BootManagerPolicyDxe/BootManagerPolicyDxe.i
nf
    MdeModulePkg/Universal/DevicePathDxe/DevicePathDxe.inf
    MdeModulePkg/Universal/DisplayEngineDxe/DisplayEngineDxe.inf
    MdeModulePkg/Universal/SetupBrowserDxe/SetupBrowserDxe.inf
@@ -690,6 +692,7 @@
    Platform/RaspberryPi/Drivers/LogoDxe/LogoDxe.inf
    MdeModulePkg/Application/UiApp/UiApp.inf {
      <LibraryClasses>
+
NULL|MdeModulePkg/Library/BootDiscoveryPolicyUiLib/BootDiscoveryPolic
yUiLib.inf

NULL|MdeModulePkg/Library/DeviceManagerUiLib/DeviceManagerUiLib.inf
        NULL|MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf

NULL|Platform/RaspberryPi/Library/PlatformUiAppLib/PlatformUiAppLib.inf
diff --git a/Platform/RaspberryPi/RPi4/RPi4.fdf
b/Platform/RaspberryPi/RPi4/RPi4.fdf
index 1e13909a57..371197a93e 100644
--- a/Platform/RaspberryPi/RPi4/RPi4.fdf
+++ b/Platform/RaspberryPi/RPi4/RPi4.fdf
@@ -253,6 +253,7 @@ READ_LOCK_STATUS   = TRUE
    #
    # Bds
    #
+  INF
MdeModulePkg/Universal/BootManagerPolicyDxe/BootManagerPolicyDxe.i
nf
    INF MdeModulePkg/Universal/DevicePathDxe/DevicePathDxe.inf
    INF MdeModulePkg/Universal/DisplayEngineDxe/DisplayEngineDxe.inf
    INF MdeModulePkg/Universal/SetupBrowserDxe/SetupBrowserDxe.inf
diff --git
a/Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBootMan
agerLib.inf
b/Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBootMan
agerLib.inf
index fbf510ab96..4ef2f791ae 100644
---
a/Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBootMan
agerLib.inf
+++
b/Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBootMan
agerLib.inf
@@ -61,11 +61,13 @@
    gEfiMdePkgTokenSpaceGuid.PcdDefaultTerminalType

  [Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdBootDiscoveryPolicy
    gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut
    gRaspberryPiTokenSpaceGuid.PcdSdIsArasan
    gRaspberryPiTokenSpaceGuid.PcdBootPolicy

  [Guids]
+  gBootDiscoveryPolicyMgrFormsetGuid
    gEfiFileInfoGuid
    gEfiFileSystemInfoGuid
    gEfiFileSystemVolumeLabelInfoIdGuid
@@ -73,8 +75,11 @@
    gEfiTtyTermGuid
    gUefiShellFileGuid
    gEfiEventExitBootServicesGuid
+  gEfiBootManagerPolicyNetworkGuid
+  gEfiBootManagerPolicyConnectAllGuid

  [Protocols]
+  gEfiBootManagerPolicyProtocolGuid
    gEfiDevicePathProtocolGuid
    gEfiGraphicsOutputProtocolGuid
    gEfiLoadedImageProtocolGuid
diff --git
a/Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBm.c
b/Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBm.c
index d081fdae63..d944d1a38d 100644
--- a/Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBm.c
+++ b/Platform/RaspberryPi/Library/PlatformBootManagerLib/PlatformBm.c
@@ -6,6 +6,7 @@
   *  Copyright (c) 2015-2016, Red Hat, Inc.
   *  Copyright (c) 2014-2021, ARM Ltd. All rights reserved.
   *  Copyright (c) 2004-2016, Intel Corporation. All rights reserved.
+ *  Copyright (c) 2021, Semihalf All rights reserved.
   *
   *  SPDX-License-Identifier: BSD-2-Clause-Patent
   *
@@ -19,10 +20,12 @@
  #include <Library/UefiBootManagerLib.h>
  #include <Library/UefiLib.h>
  #include <Library/PrintLib.h>
+#include <Protocol/BootManagerPolicy.h>
  #include <Protocol/DevicePath.h>
  #include <Protocol/EsrtManagement.h>
  #include <Protocol/GraphicsOutput.h>
  #include <Protocol/LoadedImage.h>
+#include <Guid/BootDiscoveryPolicy.h>
  #include <Guid/EventGroup.h>
  #include <Guid/TtyTerm.h>
  #include <ConfigVars.h>
@@ -598,6 +601,89 @@ PlatformBootManagerBeforeConsole (
    FilterAndProcess (&gEfiUsb2HcProtocolGuid, NULL, Connect);
  }

+/**
+  Connect device specified by BootDiscoverPolicy variable and refresh
+  Boot order for newly discovered boot device.
+
+  @retval  EFI_SUCCESS  Devices connected succesfully 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));
+    DiscoveryPolicy = PcdGet32 (PcdBootDiscoveryPolicy);
+    if (Status == EFI_NOT_FOUND) {
+      return EFI_SUCCESS;
+    } else if (EFI_ERROR (Status)) {
+      return Status;
+    }
+  } 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_ERROR, "%a - Failed to locate
gEfiBootManagerPolicyProtocolGuid - %r\n", __FUNCTION__, Status));
+    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:
@@ -644,6 +730,11 @@ PlatformBootManagerAfterConsole (
      DEBUG ((DEBUG_INFO, "Boot Policy is Fast Boot. Skip connecting all
devices\n"));
    }

+  Status = BootDiscoveryPolicyHandler ();
+  if (EFI_ERROR(Status)) {
+    DEBUG ((DEBUG_INFO, "Error applying Boot Discovery Policy:%r\n",
Status));
+  }
+
    Status = gBS->LocateProtocol (&gEsrtManagementProtocolGuid, NULL,
(VOID**)&EsrtManagement);
    if (!EFI_ERROR (Status)) {
      EsrtManagement->SyncEsrtFmp ();
--
2.25.1

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medium. Thank you.

Reviewed-by: Pete Batard <p...@akeo.ie>
Tested-by: Pete Batard <p...@akeo.ie>


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