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rpi-update: Improve check and warning message for initramfs

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Previously we were checking for an explicit ramfsfile= entry in config.txt,
but these days using auto_initramfs=1 is more common and not checked for.

Use device tree for check instead which should handle any scheme.
This commit is contained in:
Dom Cobley
2025-03-07 12:33:29 +00:00
committed by Phil Elwell
parent 5114bb59da
commit 0407f61fc3
1 changed files with 7 additions and 6 deletions
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13
rpi-update
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@@ -419,17 +419,18 @@ function check_partition {
function check_initramfs {
local INITRAMFS=""
if command -v vcgencmd > /dev/null; then
INITRAMFS="$(echo =$(vcgencmd get_config ramfsfile) | cut -d'=' -f3)"
fi
if [ "$INITRAMFS" == "" ]; then
if ! [[ -f "/proc/device-tree/chosen/linux,initrd-start" ]]; then
return
fi
if [[ ${SKIP_WARNING} -ne 0 ]]; then
return
fi
echo "Updating a system with initramfs configured is not supported by rpi-update"
echo "This could result in a system that will not boot."
echo ""
echo "Updating a system with initramfs configured is not supported by rpi-update."
echo "If your system relies on drivers provided by the initramfs (e.g. custom filesystem options)"
echo "it may not boot without regenerating the initramfs."
echo "If you are unsure, test if your system boots with initramfs options disabled from config.txt"
echo ""
read -p "Would you like to proceed? (y/N)" -n 1 -r -s
echo ""
if ! [[ $REPLY =~ ^[Yy]$ ]]; then