Add patches for bios_extract

This updates the dell_inspiron_1100.py script from Python 2 to 3 for
better compatibility (some distros have dropped Python 2), and adds
special handling so that it works with the Latitude E6400 BIOS.

These have also been sent upstream, so these patches can be dropped
once they are merged:
https://review.coreboot.org/c/bios_extract/+/74975/
https://review.coreboot.org/c/bios_extract/+/74976/
https://review.coreboot.org/c/bios_extract/+/74977/

1 files changed, 105 insertions, 0 deletions

diff --git a/resources/bios_extract/patches/0002-dell_inspiron_1100_unpacker-Convert-from-python-2-to.patch b/resources/bios_extract/patches/0002-dell_inspiron_1100_unpacker-Convert-from-python-2-to.patch
new file mode 100644
index 0000000..f49c8db
--- /dev/null
+++ b/resources/bios_extract/patches/0002-dell_inspiron_1100_unpacker-Convert-from-python-2-to.patch
@@ -0,0 +1,105 @@
+From 34ecbda8cc75eecb747004520c9e0bd6de3c7723 Mon Sep 17 00:00:00 2001
+From: Nicholas Chin <nic.c3.14@gmail.com>
+Date: Fri, 5 May 2023 19:35:45 -0600
+Subject: [PATCH 2/3] dell_inspiron_1100_unpacker: Convert from python 2 to 3
+
+TEST: The output of the script is the same as the python 2 version when
+run against the Inspiron 1100 BIOS
+
+Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
+Change-Id: I2ab9a72bc65121b1106e9867b7d58d1eefb0eb3d
+---
+ dell_inspiron_1100_unpacker.py | 34 +++++++++++++++++-----------------
+ 1 file changed, 17 insertions(+), 17 deletions(-)
+
+diff --git a/dell_inspiron_1100_unpacker.py b/dell_inspiron_1100_unpacker.py
+index b12059b..5e43813 100755
+--- a/dell_inspiron_1100_unpacker.py
++++ b/dell_inspiron_1100_unpacker.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python2
++#!/usr/bin/env python3
+ # Dell/Phoenix ROM BIOS PLUS unpacker
+ # 2012-09-12 version 0.1
+ # 2012-10-10 version 0.2 added support for older BIOSes with 16-bit length (Dell Inspiron 1100)
+@@ -61,16 +61,16 @@ def dell_unpack(indata):
+             dstoff += count
+             srcoff += count
+ 
+-    return dst.tostring()
++    return dst
+ 
+ mod_types = {
+     0x01: "Main ROM",
+     0x0C: "Microcode update",
+ }
+ 
+-print "Dell/Phoenix ROM BIOS PLUS unpacker"
++print("Dell/Phoenix ROM BIOS PLUS unpacker")
+ if len(sys.argv) < 2:
+-    print "Usage: dell_unpack.py bios.bin [offset]"
++    print("Usage: dell_unpack.py bios.bin [offset]")
+     sys.exit(1)
+ fname = sys.argv[1]
+ offs = 0
+@@ -78,32 +78,32 @@ f = open(fname, "rb").read()
+ if len(sys.argv) > 2:
+     offs = int(sys.argv[2], 16)
+ else:
+-    offs = f.find("\xF0\x00Copyright 1985-\x02\x04\xF0\x0F8 Phoenix Technologies Ltd.")
++    offs = f.find(b"\xF0\x00Copyright 1985-\x02\x04\xF0\x0F8 Phoenix Technologies Ltd.")
+     if offs == -1:
+-        print "Does not look like a Dell/Phoenix ROM BIOS PLUS"
++        print("Does not look like a Dell/Phoenix ROM BIOS PLUS")
+         sys.exit(2)
+-    if f[offs-5] == '\x01':
++    if f[offs-5] == 0x01:
+         hlen = 5 # 32-bit length
+         offs -= 5
+         fmt = "<BI"
+-    elif f[offs-3] == '\x01':
++    elif f[offs-3] == 0x01:
+         hlen = 3 # 16-bit length
+         offs -= 3
+         fmt = "<BH"
+     else:
+-        print "Unhandled format!"
++        print("Unhandled format!")
+         sys.exit(1)
+-    print "Found compressed module at %08X" % offs
++    print("Found compressed module at %08X" % offs)
+ if offs > 0:
+     fn = "EC.bin"
+-    print "%08X EC code, %08X  %s" % (0, offs, fn)
++    print("%08X EC code, %08X  %s" % (0, offs, fn))
+     open(fn, "wb").write(f[:offs])
+ while True:
+     type_id, leng = struct.unpack(fmt, f[offs:offs+hlen])
+-    print "%08X type %02X" % (offs, type_id),
++    print("%08X type %02X" % (offs, type_id), end=" ")
+     offs += hlen
+     if type_id == 0xFF:
+-        print "<end of chain>"
++        print("<end of chain>")
+         break
+     data = f[offs:offs+leng]
+     offs += leng
+@@ -111,11 +111,11 @@ while True:
+         odata = dell_unpack(data)
+     else:
+         odata = data
+-    print " %08X -> %08X" % (leng, len(odata)),
++    print(" %08X -> %08X" % (leng, len(odata)), end=" ")
+     fn = "mod_%02X.bin" % type_id
+-    print " %s" % fn,
++    print(" %s" % fn, end=" ")
+     if type_id in mod_types:
+-        print "(%s)" % mod_types[type_id]
++        print("(%s)" % mod_types[type_id])
+     else:
+-        print ""
++        print("")
+     open(fn, "wb").write(odata)
+-- 
+2.40.1
+