On 2017-09-13 13:00, Allan Jude wrote: > Author: allanjude > Date: Wed Sep 13 17:00:02 2017 > New Revision: 323554 > URL: https://svnweb.freebsd.org/changeset/base/323554 > > Log: > Increase EFI boot file size frok 128k to 384k > > generate_fat.sh does the following: > - create an 800kb zero-filled file > - create an md device backed by this file > - format the device fat12 > - mount the filesystem > - create the EFI ESP directory structure > - create the EFI boot file (BOOTx64 for amd64, BOOTaa64 for aarch64, etc) > - Adds a marker to the beginning of the file, and pad it to 384kb > - 384kb was chosen as it is less than half of 800kb, thus allowing > users to keep a backup of their older boot file in the small partition > - Unmount the filesystem > - Scan the image and find the offset where the marker was inserted > - The process requires root, to make image generation easier, images for > each architecture are pregenerated, compressed with xz, and checked > into svn. > > The Makefile that generates boot1.efifat does the following: > - Ensure the compiled boot1.efi file is no larger than the generated image > - Decompress the template created by generate-fat.sh > - dd the contents of boot1.efi into boot1.efifat starting at the offset > where the marker is found. This allows any file less than the maximum > size to be written into the fat filesystem without having to mount it, > so no root privileges are required. > > Later work by imp and myself makes bsdinstall create a 200mb fat16 instead > of using this process, but it is retained to make image generation easier. > > Submitted by: Eric McCorkle (original version) > Reviewed by: emaste, tsoome, Eric McCorkle > MFC after: 1 month > Differential Revision: https://reviews.freebsd.org/D9680 > > Added: > head/sys/boot/efi/boot1/fat-amd64.tmpl.xz (contents, props changed) > head/sys/boot/efi/boot1/fat-arm.tmpl.xz (contents, props changed) > head/sys/boot/efi/boot1/fat-arm64.tmpl.xz (contents, props changed) > head/sys/boot/efi/boot1/fat-i386.tmpl.xz (contents, props changed) > Deleted: > head/sys/boot/efi/boot1/fat-amd64.tmpl.bz2.uu > head/sys/boot/efi/boot1/fat-arm.tmpl.bz2.uu > head/sys/boot/efi/boot1/fat-arm64.tmpl.bz2.uu > head/sys/boot/efi/boot1/fat-i386.tmpl.bz2.uu > Modified: > head/sys/boot/efi/boot1/Makefile > head/sys/boot/efi/boot1/Makefile.fat > head/sys/boot/efi/boot1/generate-fat.sh >
I forgot to mention: I did away with uuencoding the binary files, because svn and git can handle binary files just fine, and it was just silly. I switched from bzip to xzip, as we are getting away from using bzip as a part of the toolchain. -- Allan Jude
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