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From aa2b66b18a62d652bdbefae7b5732297294306ca Mon Sep 17 00:00:00 2001
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From: Philippe Mathieu-Daude <philmd@redhat.com>
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Date: Thu, 1 Aug 2019 20:43:48 +0200
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Subject: OvmfPkg: QemuRamfbDxe: Do not report DXE failure on Aarch64 silent
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builds (RH only)
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Notes about the RHEL-8.1/20190308-89910a39dcfd [edk2-stable201903] ->
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RHEL-8.2/20190904-37eef91017ad [edk2-stable201908] rebase:
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- We have to carry this downstream-only patch -- committed originally as
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aaaedc1e2cfd -- indefinitely.
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- To avoid confusion, remove the tags from the commit message that had
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been added by the downstream maintainer scripts, such as: Message-id,
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Patchwork-id, O-Subject, Acked-by. These remain available on the
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original downstream commit. The Bugzilla line is preserved, as it
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doesn't relate to a specific posting, but to the problem.
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Bugzilla: 1714446
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To suppress an error message on the silent build when ramfb is
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not configured, change QemuRamfbDxe to return EFI_SUCCESS even
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when it fails.
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Some memory is wasted (driver stays resident without
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any good use), but it is mostly harmless, as the memory
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is released by the OS after ExitBootServices().
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Suggested-by: Laszlo Ersek <lersek@redhat.com>
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Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com>
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(cherry picked from commit aaaedc1e2cfd55ef003fb1b5a37c73a196b26dc7)
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Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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---
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OvmfPkg/QemuRamfbDxe/QemuRamfb.c | 14 ++++++++++++++
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OvmfPkg/QemuRamfbDxe/QemuRamfbDxe.inf | 1 +
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2 files changed, 15 insertions(+)
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diff --git a/OvmfPkg/QemuRamfbDxe/QemuRamfb.c b/OvmfPkg/QemuRamfbDxe/QemuRamfb.c
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index 0d49d8bbab..dbf9bcbe16 100644
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--- a/OvmfPkg/QemuRamfbDxe/QemuRamfb.c
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+++ b/OvmfPkg/QemuRamfbDxe/QemuRamfb.c
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@@ -13,6 +13,7 @@
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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+#include <Library/DebugPrintErrorLevelLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/FrameBufferBltLib.h>
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#include <Library/MemoryAllocationLib.h>
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@@ -242,6 +243,19 @@ InitializeQemuRamfb (
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Status = QemuFwCfgFindFile ("etc/ramfb", &mRamfbFwCfgItem, &FwCfgSize);
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if (EFI_ERROR (Status)) {
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+#if defined (MDE_CPU_AARCH64)
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+ //
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+ // RHBZ#1714446
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+ // If no ramfb device was configured, this platform DXE driver should
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+ // returns EFI_NOT_FOUND, so the DXE Core can unload it. However, even
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+ // using a silent build, an error message is issued to the guest console.
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+ // Since this confuse users, return success and stay resident. The wasted
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+ // guest RAM still gets freed later after ExitBootServices().
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+ //
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+ if (GetDebugPrintErrorLevel () == DEBUG_ERROR) {
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+ return EFI_SUCCESS;
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+ }
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+#endif
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return EFI_NOT_FOUND;
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}
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if (FwCfgSize != sizeof (RAMFB_CONFIG)) {
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diff --git a/OvmfPkg/QemuRamfbDxe/QemuRamfbDxe.inf b/OvmfPkg/QemuRamfbDxe/QemuRamfbDxe.inf
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index e3890b8c20..6ffee5acb2 100644
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--- a/OvmfPkg/QemuRamfbDxe/QemuRamfbDxe.inf
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+++ b/OvmfPkg/QemuRamfbDxe/QemuRamfbDxe.inf
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@@ -29,6 +29,7 @@
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BaseLib
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BaseMemoryLib
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DebugLib
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+ DebugPrintErrorLevelLib
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DevicePathLib
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FrameBufferBltLib
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MemoryAllocationLib
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--
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2.18.1
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