[RFC PATCH v1 1/4] OvmfPkg/TPM PPI: Connect default consoles for user interaction


Stefan Berger
 

Activate the default console when user interaction is required for
the processing of TPM 2 physical presence interface opcodes.

Background:
TPM 2 physical presence interface (PPI) opcodes need to be handled before
the TPM 2 platform hierarchy is disabled. Due to this requirement we will
move the function call to handle the PPI opcodes into
PlatformBootManagerBeforeConsole() which runs before the initialization
of the consoles. However, since for interaction with the user we need
the console to be available, activate it now before displaying any message
to the user.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
---
.../Tcg2PhysicalPresenceLibQemu/DxeTcg2PhysicalPresenceLib.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/OvmfPkg/Library/Tcg2PhysicalPresenceLibQemu/DxeTcg2PhysicalPre=
senceLib.c b/OvmfPkg/Library/Tcg2PhysicalPresenceLibQemu/DxeTcg2PhysicalPre=
senceLib.c
index 00d76ba2c2..8834a71eff 100644
--- a/OvmfPkg/Library/Tcg2PhysicalPresenceLibQemu/DxeTcg2PhysicalPresenceLi=
b.c
+++ b/OvmfPkg/Library/Tcg2PhysicalPresenceLibQemu/DxeTcg2PhysicalPresenceLi=
b.c
@@ -32,6 +32,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Library/UefiBootServicesTableLib.h>=0D
#include <Library/UefiLib.h>=0D
#include <Library/UefiRuntimeServicesTableLib.h>=0D
+#include <Library/UefiBootManagerLib.h>=0D
=0D
#include <Library/Tcg2PhysicalPresenceLib.h>=0D
=0D
@@ -591,6 +592,9 @@ Tcg2UserConfirm (
return FALSE;=0D
}=0D
=0D
+ // Console for user interaction=0D
+ EfiBootManagerConnectAllDefaultConsoles ();=0D
+=0D
if (TpmPpCommand < TCG2_PHYSICAL_PRESENCE_STORAGE_MANAGEMENT_BEGIN) {=0D
if (CautionKey) {=0D
TmpStr1 =3D Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAU=
TION_KEY));=0D
--=20
2.31.1