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-rw-r--r--config/me_cleaner/patches/0001-Add-a-p-option-skip-FPTR-checks.patch71
1 files changed, 71 insertions, 0 deletions
diff --git a/config/me_cleaner/patches/0001-Add-a-p-option-skip-FPTR-checks.patch b/config/me_cleaner/patches/0001-Add-a-p-option-skip-FPTR-checks.patch
new file mode 100644
index 00000000..0689f0a6
--- /dev/null
+++ b/config/me_cleaner/patches/0001-Add-a-p-option-skip-FPTR-checks.patch
@@ -0,0 +1,71 @@
+From e9ceef92dc53501d8d6debc9f5ac9580149eb3dc Mon Sep 17 00:00:00 2001
+From: Leah Rowe <leah@libreboot.org>
+Date: Sat, 27 Sep 2025 22:52:45 +0100
+Subject: [PATCH 1/1] Add a -p option (skip FPTR checks)
+
+if you pass -k (keep fptr modules), don't use -r, don't
+use -t, you can essentially just use me_cleaner to
+extract a ME image without changing it. this is useful
+when for example, you just want to set the HAP bit.
+
+however, me_cleaner still performs a FPTR check.
+
+on some newer ME versions, it's always invalid according
+to me_cleaner, because for example it doesn't handle
+ME16 very well yet.
+
+this patch adds an option to override the FPTR check
+
+either pass -p or --pass-fptr
+
+Signed-off-by: Leah Rowe <leah@libreboot.org>
+---
+ me_cleaner.py | 14 ++++++++++----
+ 1 file changed, 10 insertions(+), 4 deletions(-)
+
+diff --git a/me_cleaner.py b/me_cleaner.py
+index 473e761..36760fb 100755
+--- a/me_cleaner.py
++++ b/me_cleaner.py
+@@ -276,8 +276,10 @@ def check_partition_signature(f, offset):
+ return "{:#x}".format(decrypted_sig).endswith(sha256.hexdigest()) # FIXME
+
+
+-def print_check_partition_signature(f, offset):
+- if check_partition_signature(f, offset):
++def print_check_partition_signature(f, offset, pass_fptr):
++ if pass_fptr:
++ print("Skipping FPTR checks because the user told us to")
++ elif check_partition_signature(f, offset):
+ print("VALID")
+ else:
+ print("INVALID!!")
+@@ -517,6 +519,8 @@ if __name__ == "__main__":
+ "--extract-me)", action="store_true")
+ parser.add_argument("-k", "--keep-modules", help="don't remove the FTPR "
+ "modules, even when possible", action="store_true")
++ parser.add_argument("-p", "--pass-fptr", help="skip FTPR signature checks"
++ "regardless of other operations", action="store_true")
+ bw_list.add_argument("-w", "--whitelist", metavar="whitelist",
+ help="Comma separated list of additional partitions "
+ "to keep in the final image. This can be used to "
+@@ -1024,12 +1028,14 @@ if __name__ == "__main__":
+ print("Checking the FTPR RSA signature of the extracted ME "
+ "image... ", end="")
+ print_check_partition_signature(mef_copy,
+- ftpr_offset + ftpr_mn2_offset)
++ ftpr_offset + ftpr_mn2_offset,
++ args.pass_fptr)
+ mef_copy.close()
+
+ if not me6_ignition:
+ print("Checking the FTPR RSA signature... ", end="")
+- print_check_partition_signature(mef, ftpr_offset + ftpr_mn2_offset)
++ print_check_partition_signature(mef, ftpr_offset + ftpr_mn2_offset,
++ args.pass_fptr)
+
+ f.close()
+
+--
+2.47.3
+