mirror of
https://github.com/lingble/meta-tegra.git
synced 2025-10-28 19:12:39 +00:00
3fdf6ce5dc
This update adds a check for a missing UDC (USB Device Controller) variable to prevent errors related to uninitialized or absent UDCs, stopping the execution of the boot process if none is found. A missing UDC can result from various issues, such as an incorrect Device Tree Blob (DTB) configuration or misconfigured power regulators. By exiting early with a clear error message, this change helps diagnose and address the root cause more effectively. Signed-off-by: Pablo Rodriguez Quesada <pablo.aarch64@gmail.com>
257 lines
6.9 KiB
Bash
257 lines
6.9 KiB
Bash
#!/bin/sh
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PATH=/sbin:/bin:/usr/sbin:/usr/bin
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mount -t proc proc -o nosuid,nodev,noexec /proc
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mount -t devtmpfs none -o nosuid /dev
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mkdir -m 1777 /dev/shm
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mkdir -m 0755 /dev/pts
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mount -t devpts devpts /dev/pts
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mount -t sysfs sysfs -o nosuid,nodev,noexec /sys
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find /lib/modules -name 'usb_f_*.ko' -type f | while read m; do
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modprobe -v "$m"
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done
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find /sys -name modalias | while read m; do
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modalias=$(cat "$m")
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modprobe -v "$modalias" 2> /dev/null
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done
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MODULES_TO_LOAD="nvme typec ucsi-ccg tegra-mce watchdog-tegra-t18x"
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for m in $MODULES_TO_LOAD; do
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modprobe -v "$m"
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done
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mount -t configfs configfs -o nosuid,nodev,noexec /sys/kernel/config
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[ ! -e /usr/sbin/wd_keepalive ] || /usr/sbin/wd_keepalive &
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sernum=$(cat /proc/device-tree/serial-number)
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if [ -n "$sernum" ]; then
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# Restricted to 8 characters for the ID_MODEL tag
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sernum=$(printf "%x" "$sernum" | tail -c8)
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fi
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[ -n "$sernum" ] || sernum="UNKNOWN"
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echo "Serial number: $sernum"
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UDC=$(ls -1 /sys/class/udc | head -n 1)
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if [ -z "$UDC" ]; then
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echo "Error: No UDC found in /sys/class/udc" >&2
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exit 1
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fi
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wait_for_storage() {
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local file_or_dev="$1"
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local message="Waiting for $file_or_dev..."
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local tries
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for tries in $(seq 1 15); do
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if [ -e "$file_or_dev" ]; then
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if [ "$message" = "." ]; then
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echo "[OK]"
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else
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echo "Found $file_or_dev"
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fi
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break
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fi
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echo -n "$message"
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message="."
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sleep 1
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done
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if [ $tries -ge 15 ]; then
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echo "[FAIL]"
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return 1
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fi
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return 0
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}
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setup_usb_export() {
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local storage_export="$1"
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local export_name="$2"
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wait_for_storage "$storage_export" || return 1
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if [ -e /sys/kernel/config/usb_gadget/l4t ]; then
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gadget-vid-pid-remove 1d6b:104
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fi
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sed -e"s,@SERIALNUMBER@,$sernum," -e"s,@STORAGE_EXPORT@,$storage_export," /etc/initrd-flash/initrd-flash.scheme.in > /run/initrd-flash.scheme
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chmod 0644 /run/initrd-flash.scheme
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gadget-import l4t /run/initrd-flash.scheme
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printf "%-8s%-16s" "$export_name" "$sernum" > /sys/kernel/config/usb_gadget/l4t/functions/mass_storage.l4t_storage/lun.0/inquiry_string
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echo "$UDC" > /sys/kernel/config/usb_gadget/l4t/UDC
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if [ -e /sys/class/usb_role/usb2-0-role-switch/role ]; then
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echo "device" > /sys/class/usb_role/usb2-0-role-switch/role
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fi
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echo "Exported $storage_export as $export_name"
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return 0
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}
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wait_for_connect() {
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local configured
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local count=0
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echo -n "Waiting for host to connect..."
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while true; do
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configured=$(cat /sys/class/udc/$UDC/state)
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if [ "$configured" = "configured" ]; then
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echo "[connected]"
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break
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fi
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sleep 1
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count=$(expr $count \+ 1)
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if [ $count -ge 5 ]; then
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echo -n "."
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count=0
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fi
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done
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return 0
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}
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wait_for_disconnect() {
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local configured
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local count=0
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echo -n "Waiting for host to disconnect..."
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while true; do
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configured=$(cat /sys/class/udc/$UDC/state)
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if [ "$configured" != "configured" ]; then
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echo "[disconnected]"
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break
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fi
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sleep 1
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count=$(expr $count \+ 1)
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if [ $count -ge 5 ]; then
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echo -n "."
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count=0
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fi
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done
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echo "" > /sys/kernel/config/usb_gadget/l4t/UDC
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return 0
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}
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get_flash_package() {
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rm -rf /tmp/flashpkg_tree
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mkdir -p /tmp/flashpkg_tree/flashpkg/logs
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# Top of mount point on host will only be writable by root, so
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# create a world-writable subdirectory so a user can send us
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# the commands and content.
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chmod 777 /tmp/flashpkg_tree/flashpkg
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echo "PENDING: expecting command sequence from host" > /tmp/flashpkg_tree/flashpkg/status
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dd if=/dev/zero of=/tmp/flashpkg.ext4 bs=1M count=128 > /dev/null || return 1
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mke2fs -t ext4 -d /tmp/flashpkg_tree /tmp/flashpkg.ext4 > /dev/null || return 1
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setup_usb_export /tmp/flashpkg.ext4 flashpkg || return 1
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wait_for_connect || return 1
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wait_for_disconnect || return 1
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return 0
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}
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process_bootloader_package() {
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rm -f /run/bootloader-status
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if program-boot-device /tmp/flashpkg/flashpkg/bootloader; then
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echo "SUCCESS" > /run/bootloader-status
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else
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echo "FAILED" > /run/bootloader-status
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fi
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}
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skip_status_report=
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reboot_type=
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final_status="FAILED"
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wait_for_bootloader=
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if ! get_flash_package; then
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echo "Error retrieving flashing package" >&2
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skip_status_report=yes
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else
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mkdir -p /tmp/flashpkg
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mount -t ext4 /tmp/flashpkg.ext4 /tmp/flashpkg
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fi
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if [ ! -e /tmp/flashpkg/flashpkg/conf/command_sequence ]; then
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echo "No command sequence in flash package, nothing to do"
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else
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exit_early=
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while read cmd args; do
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[ -z "$exit_early" ] || break
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echo "Processing: $cmd $args"
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case "$cmd" in
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bootloader)
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process_bootloader_package 2>&1 > /tmp/flashpkg/flashpkg/logs/bootloader.log &
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wait_for_bootloader=yes
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;;
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extra-pre-wipe)
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if [ -f "/init-extra-pre-wipe" ]; then
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./init-extra-pre-wipe
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else
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echo "No init-extra-pre-wipe was found" >&2
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fi
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;;
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erase-mmc)
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if [ -b /dev/mmcblk0 ]; then
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blkdiscard -f /dev/mmcblk0 2>&1 > /tmp/flashpkg/flashpkg/logs/erase-mmc.log
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else
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echo "/dev/mmcblk0 does not exist, skipping" > /tmp/flashpkg/flashpkg/logs/erase-mmc.log
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fi
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;;
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erase-nvme)
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if [ -b /dev/nvme0n1 ]; then
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blkdiscard -f /dev/nvme0n1 2>&1 > /tmp/flashpkg/flashpkg/logs/erase-nvme.log
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else
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echo "/dev/nvme0n1 does not exist, skipping" > /tmp/flashpkg/flashpkg/logs/erase-nvme.log
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fi
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;;
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export-devices)
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for dev in $args; do
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if setup_usb_export /dev/$dev $dev 2>&1 > /tmp/flashpkg/flashpkg/logs/export-$dev.log; then
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if wait_for_connect 2>&1 >> /tmp/flashpkg/flashpkg/logs/export-$dev.log; then
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if wait_for_disconnect 2>&1 >> /tmp/flashpkg/flashpkg/logs/export-$dev.log; then
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sgdisk /dev/$dev --verify 2>&1 >> /tmp/flashpkg/flashpkg/logs/export-$dev.log
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sgdisk /dev/$dev --print 2>&1 >> /tmp/flashpkg/flashpkg/logs/export-$dev.log
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continue
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fi
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fi
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fi
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echo "Export of $dev failed" >&2
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exit_early=yes
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break
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done
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;;
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extra)
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if [ -f "/init-extra" ]; then
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./init-extra
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else
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echo "No init-extra was found" >&2
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fi
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;;
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reboot)
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reboot_type="$args"
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final_status="SUCCESS"
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# reboot command is expected to be the last in the sequence, if present
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break
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;;
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*)
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echo "Unrecognized command: $cmd $args" > /tmp/flashpkg/flashpkg/logs/commandloop.log
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exit_early="yes"
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;;
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esac
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done < /tmp/flashpkg/flashpkg/conf/command_sequence
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fi
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if [ -n "$wait_for_bootloader" ]; then
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message="Waiting for boot device programming to complete..."
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while [ ! -e /run/bootloader-status ]; do
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echo -n "$message"
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message="."
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sleep 1
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done
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blstatus=$(cat /run/bootloader-status)
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if [ "$blstatus" = "FAILED" ]; then
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final_status="FAILED"
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fi
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fi
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echo "$final_status" > /tmp/flashpkg/flashpkg/status
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if [ -z "$skip_status_report" ]; then
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umount /tmp/flashpkg && setup_usb_export /tmp/flashpkg.ext4 flashpkg && wait_for_connect && wait_for_disconnect
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fi
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if [ "$reboot_type" = "forced-recovery" ]; then
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reboot-recovery
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else
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reboot -f
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fi
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