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https://codeberg.org/libreboot/lbmk.git
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80be5ce87e
Using the same ME image as the 3050 Micro. This fixes the lack of a backup download URL for the ME and speeds up boot time, since MRC caching is working with ME (unlike SPS). Unfortunately, since the MFS partition must be preserved, this does mean we need a larger ME region than with me_cleaned SPS.
43 lines
1.6 KiB
Diff
43 lines
1.6 KiB
Diff
From 47c561cfa7b3970608543f8f2cb7d08b2d1e0e4d Mon Sep 17 00:00:00 2001
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From: Ron Nazarov <ron@noisytoot.org>
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Date: Sat, 14 Feb 2026 19:05:18 +0000
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Subject: [PATCH 3/4] lib/image.py: Disable $FPT checksum check
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I don't actually understand what this does, but it doesn't seem to be
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doing anything useful. It seems to be just checking that some range
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of bytes is all zero, which isn't a checksum.
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On my OptiPlex 5050 SFF image (which passes), this range of bytes is
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empty, because self.data[self.HDRLEN_OFF] is 0. On my Supermicro
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X11SSH-F/LN4F image, self.data[self.HDRLEN_OFF] is 19, which means
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that self.data[self.HEADER_OFF:self.data[self.HDRLEN_OFF]] is
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bytearray(b'$FP'), which makes the check fail.
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Without this check, it can generate a working delta for the Supermicro
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X11SSH-F/LN4F.
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Change-Id: I16735676fd4ae2a4e065886aeb7a06cead721cdf
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Signed-off-by: Ron Nazarov <ron@noisytoot.org>
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---
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lib/image.py | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/lib/image.py b/lib/image.py
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index 21db448..e303e8f 100644
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--- a/lib/image.py
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+++ b/lib/image.py
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@@ -84,8 +84,8 @@ class MeImage:
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# Verify magic and checksum
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if self.data[self.MARKER_OFF:self.MARKER_OFF+4] != self.MARKER:
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raise ValueError("Invalid $FPT magic")
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- if sum(self.data[self.HEADER_OFF:self.data[self.HDRLEN_OFF]]) != 0:
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- raise ValueError("Invalid $FPT checksum")
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+ # if sum(self.data[self.HEADER_OFF:self.data[self.HDRLEN_OFF]]) != 0:
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+ # raise ValueError("Invalid $FPT checksum")
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# Parse entries
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self.entries = {}
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--
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2.52.0
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