Caleb Connolly
8400fffefb
Currently the initramfs is littered with various code snippets which read /proc/cmdline. This is error prone and results in more complicated code especially as we want to standardise all the pmos specific cmdline arguments, and where some arguments have the same behaviour as deviceinfo variables. Let's do the parsing correctly, once, and set global variables to enable/disable/configure parts of the initramfs. At the same time introduce namespaced and standard versions of the remaining arguments which haven't been standardised yet. Now (for example) to check if the splash is disabled, rather than grepping /proc/cmdline for PMOS_NOSPLASH AND checking if deviceinfo_no_framebuffer is true, you can just check if "$nosplash" = "y". This will drastically simplify the process of adding additional configuration options in the future. Most of the code here was taken from the Arch Linux initramfs and simplified/adjusted to better fix our use case. Signed-off-by: Caleb Connolly <caleb@postmarketos.org> Part-of: https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/6172
77 lines
1.9 KiB
Bash
77 lines
1.9 KiB
Bash
#!/bin/sh
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# shellcheck disable=SC1091
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# Export all variables so they're available in /init_2nd.sh
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set -a
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IN_CI="false"
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LOG_PREFIX="[pmOS-rd]"
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[ -e /hooks/10-verbose-initfs.sh ] && set -x
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[ -e /hooks/05-ci.sh ] && IN_CI="true"
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[ -e /etc/unudhcpd.conf ] && . /etc/unudhcpd.conf
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. ./init_functions.sh
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. /usr/share/misc/source_deviceinfo
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[ -e /etc/os-release ] && . /etc/os-release
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# provide a default for os-release's VERSION in case the file doesn't exist
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VERSION="${VERSION:-unknown}"
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# This is set during packaging and is used when triaging bug reports
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INITRAMFS_PKG_VERSION="<<INITRAMFS_PKG_VERSION>>"
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export PATH=/usr/bin:/bin:/usr/sbin:/sbin
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/bin/busybox --install -s
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/bin/busybox-extras --install -s
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# Mount everything, set up logging, modules, mdev
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mount_proc_sys_dev
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parse_cmdline < /proc/cmdline
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setup_log
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echo " ❬❬ PMOS STAGE 1 ❭❭"
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echo "initramfs version: $INITRAMFS_PKG_VERSION"
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setup_firmware_path
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# Jump straight to the 2nd stage init if available
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# (no separate -extra) or no-op otherwise
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jump_init_2nd
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echo "Loading initramfs-extra..."
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# We need mdev to find the boot partition
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setup_mdev
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load_modules /lib/modules/initramfs.load
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setup_usb_network
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start_unudhcpd
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if [ "$IN_CI" = "false" ]; then
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setup_framebuffer
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show_splash "Loading..."
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fi
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# Discover the partitions if they're "subpartitions"
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# (where the whole disk image is flashed to a partition)
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mount_subpartitions
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# Poll for the boot partition to become available or crash
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wait_boot_partition
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mount_boot_partition /boot
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extract_initramfs_extra /boot/initramfs-extra
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# /boot is mounted later into the rootfs
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umount /boot
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# Kill mdev, since it's replaced by udev in the
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# second stage init
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kill mdev 2>/dev/null
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# Now we can jump to the 2nd stage init
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jump_init_2nd
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# Somehow init_2nd.sh is missing
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echo "$LOG_PREFIX ERROR: /init_2nd.sh not found!"
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echo "$LOG_PREFIX For more information, see <https://postmarketos.org/debug-shell>"
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fail_halt_boot
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