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28da46a764
gates / gates (push) Successful in 2m54s
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
23 lines
1.5 KiB
Bash
23 lines
1.5 KiB
Bash
#!/bin/bash
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# Candidate 1 (R-836): UEFI BootNext. A copy of the signed loader in \EFI\felhomnext\ whose grub.cfg exports the target
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# entry, and a firmware entry "felhom-next" kept OUT of BootOrder. The firmware clears BootNext itself after one use.
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# Usage: spike-bootnext-setup.sh <target-entry-id> (re-run to change the target). Reversible: spike-bootnext-undo.sh
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set -euo pipefail
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TARGET=$1
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P=/boot/efi/EFI/proxmox; N=/boot/efi/EFI/felhomnext
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mkdir -p $N; cp -p $P/shimx64.efi $P/grubx64.efi $P/mmx64.efi $N/
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STUB=$(grep -v '^configfile' $P/grub.cfg)
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printf '%s\n' "set felhom_bn=$TARGET" "export felhom_bn" "$STUB" 'configfile $prefix/grub.cfg' > $N/grub.cfg
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# the main grub.cfg honours felhom_bn (set only when the felhomnext loader started GRUB)
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if ! grep -q felhom_bn /etc/grub.d/01_felhom_oneshot; then
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sed -i 's#^G$#if [ "${felhom_bn}" ]; then set default="${felhom_bn}"; fi\nG#' /etc/grub.d/01_felhom_oneshot
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update-grub 2>&1 | tail -1
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fi
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ORDER=$(efibootmgr | sed -n 's/^BootOrder: //p')
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if ! efibootmgr | grep -q ' felhom-next'; then
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DISK=/dev/$(lsblk -no PKNAME $(findmnt -n -o SOURCE /boot/efi)); PART=$(cat /sys/class/block/$(basename $(findmnt -n -o SOURCE /boot/efi))/partition)
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efibootmgr -q -c -d $DISK -p $PART -L felhom-next -l '\EFI\felhomnext\shimx64.efi'
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efibootmgr -q -o "$ORDER" # -c puts the new entry first; the normal order is restored
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fi
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efibootmgr | grep -E 'BootOrder|felhom-next|BootNext'; cat $N/grub.cfg; grep -n felhom_bn /boot/grub/grub.cfg
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