josh
a88e24bef4
Host boots past kernel init and then stalls silently. ACPI DSDT error about TXHC.RHUB.SS01 is benign noise (Tiger Lake firmware bug) — the actual problem is that nothing between kernel handoff and (maybe) systemd is visible on the console. Two changes: 1. Replace the /init → sbin/init symlink with a real shell script (live-image/mkosi.extra/init) that mounts /proc /sys /dev /dev/pts /dev/shm /run before execing systemd. Systemd has fallback mount code for these, but when it fails the failure is silent. Doing it explicitly in /init keeps failures visible and avoids the fragile symlink-resolution trick. 2. Drop 'quiet' from the kernel cmdline and add loglevel=7 plus systemd.log_target=kmsg + journald.forward_to_console=1 so every early-boot message reaches both tty0 and ttyS0. Will be dialed back once boot is stable. Also: .gitattributes pins LF on live-image/, .gitea/, Makefile, and *.sh so Windows checkouts don't break shell scripts and Makefile recipes with CRLF. /init also gets chmod 0755 in repack-initrd as a belt-and-braces against mode loss on non-Linux checkouts.
32 lines
1.3 KiB
Bash
Executable File
32 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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# /init — PID 1 entry point for the everything-in-initramfs live image.
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#
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# The kernel unpacks our cpio.zst into a ramfs, sees no root= parameter,
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# and execs /init. Classic initramfs-tools has an elaborate /init that
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# mounts a real rootfs and pivot_roots into it; we don't do that —
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# there IS no other rootfs, the initramfs IS the rootfs. All we need
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# to do is set up the api-vfs mounts systemd expects before PID 1 and
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# hand off.
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#
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# Running systemd directly as PID 1 from kernel /init works (systemd
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# detects it's PID 1 and boots normally), but only if /proc, /sys, /dev
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# are pre-mounted. Systemd has fallback mount code for these, but it's
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# fragile in the ramfs-rootfs case — doing it here explicitly makes
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# first-boot failures easier to see and harder to hit.
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set -e
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echo "vetting-init: bootstrapping api-vfs"
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mount -t proc -o nosuid,noexec,nodev proc /proc
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mount -t sysfs -o nosuid,noexec,nodev sysfs /sys
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mount -t devtmpfs -o mode=0755,nosuid devtmpfs /dev
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mkdir -p /dev/pts /dev/shm /run
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mount -t devpts -o gid=5,mode=620,nosuid,noexec devpts /dev/pts
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mount -t tmpfs -o mode=1777,nosuid,nodev tmpfs /dev/shm
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mount -t tmpfs -o mode=0755,nosuid,nodev tmpfs /run
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echo "vetting-init: handing off to systemd"
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exec /lib/systemd/systemd
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