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authorLeah Rowe <leah@libreboot.org>2023-04-14 01:36:54 +0100
committerLeah Rowe <leah@libreboot.org>2023-04-14 01:41:07 +0100
commit668de6d81f66c336c7a780edfd8af6550c50a057 (patch)
tree7a0d5bc72ed766a8318e4ca0c28343205e3aacbe /blobs/xx20/gbe.bin
parent9df1a1774fdcf37bf363db20b75dad2eeef2b405 (diff)
blobutil: support extracting ME from full ROMs
In cases where the vendor update file contains a full ROM image encompassing IFD+GbE+ME+BIOS, blobutil was saving the *entire* ROM containing those, as me.bin. For example, if it's an 8MB ROM, blobutil would create a me.bin file that is actually the whole ROM containing: * Vendor IFD region * Vendor GbE(if it has one) * Vendor ME region * Vendor BIOS region This fix tries with -M and -O first. In this combination, me_cleaner shall extract me.bin (neutered) and save it. If that fails, then the normal method with just -O is tried, which by this logic would always be a lone ME image if it succeeds. I tested downloading ME images on existing boards with this, and it didn't break them, and this fixes the bug. This is done for HP 8200 SFF which Riku_V is adding to lbmk. I'm on IRC with Riku_V as I write this commit message! Super hot hotfix patch.
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