mirror of
https://gitlab.alpinelinux.org/alpine/aports.git
synced 2026-02-10 18:31:50 +01:00
59 lines
1.7 KiB
Bash
59 lines
1.7 KiB
Bash
#!/bin/sh
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if grep -q '^disable_trigger=1' /etc/update-raspberrypi-bootloader.conf 2>/dev/null; then
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exit 0
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fi
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# see https://www.raspberrypi.com/documentation/computers/config_txt.html#kernel
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# use the last found kernel for for example vmlinuz-rpi16k gets preference over
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# vmlinuz-rpi
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for i in /boot/vmlinuz* /boot/vmlinuz-lts /boot/vmlinuz-rpi /boot/vmlinuz-rpi*; do
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if [ -e "$i" ]; then
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kernel="${i#/boot/}"
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initramfs="initramfs${kernel#vmlinuz}"
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fi
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done
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if [ -z "$kernel" ]; then
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echo "$0: WARNING: no kernel found" >&2
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exit
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fi
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case "$(uname -m)" in
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aarch64) arm_64bit=1;;
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*) arm_64bit=0;;
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esac
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# busybox sed has no q command support so use grep to test pattern first
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if grep -q '^kernel=' /boot/config.txt 2>/dev/null && \
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grep -q '^initramfs' /boot/config.txt && \
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grep -q '^arm_64bit=' /boot/config.txt; then
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cp -fa /boot/config.txt /boot/config.txt.new
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sed -i -e "s/^kernel=.*/kernel=$kernel/" \
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-e "s/^initramfs.*/initramfs $initramfs/" \
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-e "s/^arm_64bit=.*/arm_64bit=$arm_64bit/" /boot/config.txt.new
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else
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cat > /boot/config.txt.new <<-EOF
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# do not modify this file as it will be overwritten on upgrade.
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# create and/or modify usercfg.txt instead.
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# https://www.raspberrypi.com/documentation/computers/config_txt.html
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#
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kernel=$kernel
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initramfs $initramfs
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arm_64bit=$arm_64bit
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include usercfg.txt
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EOF
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fi
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if diff -bBN /boot/config.txt.new /boot/config.txt >/dev/null; then
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rm -f /boot/config.txt.new
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else
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mv -f /boot/config.txt /boot/config.txt.old 2>/dev/null
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mv -f /boot/config.txt.new /boot/config.txt
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echo "$0: INFO: replaced config.txt and saved config.txt.old, with following changes:"
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diff -bBN /boot/config.txt.old /boot/config.txt 2>/dev/null
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fi
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echo "Configured kernel $kernel / $initramfs"
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