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48 lines
1.7 KiB
48 lines
1.7 KiB
9 months ago
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From f2aeff31924f6d070d7f8b87550dc6d9820531ad Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Tue, 16 Jan 2024 18:11:04 +0100
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Subject: [PATCH 15/18] OvmfPkg/VirtNorFlashDxe: ValidateFvHeader: unwritten
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state is EOL too
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RH-Author: Gerd Hoffmann <None>
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RH-MergeRequest: 43: OvmfPkg/VirtNorFlashDxe backport
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RH-Jira: RHEL-17587
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Commit: [17/20] 37220c700ea816c815e0612031e10b7d466b71a2
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It is possible to find variable entries with State being 0xff, i.e. not
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updated since flash block erase. This indicates the variable driver
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could not complete the header write while appending a new entry, and
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therefore State was not set to VAR_HEADER_VALID_ONLY.
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This can only happen at the end of the variable list, so treat this as
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additional "end of variable list" condition.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Reviewed-by: Laszlo Ersek <lersek@redhat.com>
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Message-Id: <20240116171105.37831-6-kraxel@redhat.com>
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(cherry picked from commit 735d0a5e2e25c1577bf9bea7826da937ca38169d)
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---
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OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c b/OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c
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index acc4a413ee..f8e71f88c1 100644
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--- a/OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c
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+++ b/OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c
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@@ -302,6 +302,11 @@ ValidateFvHeader (
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break;
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}
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+ if (VarHeader->State == 0xff) {
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+ DEBUG ((DEBUG_INFO, "%a: end of var list (unwritten state)\n", __func__));
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+ break;
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+ }
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+
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VarName = NULL;
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switch (VarHeader->State) {
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// usage: State = VAR_HEADER_VALID_ONLY
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--
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2.41.0
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