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71 lines
3.2 KiB
Plaintext
71 lines
3.2 KiB
Plaintext
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The ME blobs dumped in this directory come from the following link: https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t430/downloads/DS032435
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This provides latest ME version 8.1.72.3002, for which only BUP and ROMP regions will be kept as non-removable:
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Here is what Lenovo provides as a Summary of Changes:
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Version 8.1.72.3002 (G1RG24WW)
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(Fix) Fixed the following security vulnerabilites: CVE-2017-5711, CVE-2017-5712, CVE-2017-13077, CVE-2017-13078, CVE-2017-13080.
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1.0.0:Automatically extract and neuter me.bin
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download_clean_me.sh : Downloads latest ME from lenovo verify checksum, extract ME, neuters ME, relocate and trim it and place it into me.bin
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sha256sum:
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c140d04d792bed555e616065d48bdc327bb78f0213ccc54c0ae95f12b28896a4 blobs/xx30/me.bin
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1.0.1: Extract blobs from rom original and updated to 2.76 BIOS version:
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extract.sh: takes backup, unlocks ifd, apply me_cleaner to neuter, relocate, trim it, modify BIOS and ME region of IFD and place output files into this dir.
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sha256sum: will vary depending of IFD and ME extracted where IFD regions of BIOS and ME should be consistent.
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1.1: Manually generating blobs
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--------------------
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Manually generate me.bin:
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You can arrive to the same result of the following me.bin by doing the following manually:
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wget https://download.lenovo.com/pccbbs/mobiles/g1rg24ww.exe && innoextract g1rg24ww.exe && python ~/me_cleaner/me_cleaner.py -r -t -O ~/heads/blobs/xx30/me.bin app/ME8_5M_Production.bin
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sha256sums:
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f60e1990e2da2b7efa58a645502d22d50afd97b53a092781beee9b0322b61153 g1rg24ww.exe
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821c6fa16e62e15bc902ce2e958ffb61f63349a471685bed0dc78ce721a01bfa app/ME8_5M_Production.bin
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c140d04d792bed555e616065d48bdc327bb78f0213ccc54c0ae95f12b28896a4 blobs/xx30/me.bin
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ifd.bin was extracted from sacrificed X230 (dead motherboard) fron an external flashrom backup (no way found to be able to extract it from Lenovo firmware upgrades as of now):
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python ~/me_cleaner/me_cleaner.py -S -r -t -d -O /tmp/discarded.bin -D ~/heads/blobs/xx30/ifd.bin -M /tmp/temporary_me.bin dead_serving_a_purpose_x230_bottom_spi_backup.rom
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sha256sum:
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c96d19bbf5356b2b827e1ef52d79d0010884bfc889eab48835e4af9a634d129b ifd.bin
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ls -al blobs/xx30/*.bin
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-rw-r--r-- 1 user user 8192 Oct 25 14:07 gbe.bin
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-rw-r--r-- 1 user user 4096 Oct 28 16:19 ifd.bin
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-rw-r--r-- 1 user user 98304 Oct 28 16:15 me.bin
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Manually regenerate gbe.bin:
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blobs/x230/gbe.bin is generated per bincfg from the following coreboot patch: https://review.coreboot.org/c/coreboot/+/44510
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And then by following those instructions:
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# Use this target to generate GbE for X220/x230
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gen-gbe-82579LM:
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cd build/coreboot-*/util/bincfg/
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make
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./bincfg gbe-82579LM.spec gbe-82579LM.set gbe1.bin
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# duplicate binary as per spec
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cat gbe1.bin gbe1.bin > ../../../../blobs/xx30/gbe.bin
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rm -f gbe1.bin
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cd -
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sha256sum:
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9f72818e23290fb661e7899c953de2eb4cea96ff067b36348b3d061fd13366e5 blobs/xx30/gbe.bin
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------------------------
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Notes: as specified in first link, this ME can be deployed to:
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Helix (Type 3xxx)
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T430, T430i, T430s, T430si, T431s
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T530, T530i
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W530
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X1 Carbon (Type 34xx), X1 Helix (Type 3xxx), X1 Helix (Type 3xxx) 3G
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X230, X230i, X230 Tablet, X230i Tablet, X230s
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