#!/bin/bash
# rc.local for the OneFinity Pi, "fast" variant.
#
# What changed vs. scripts/rc.local:
#   - bbserial unbind/rebind moved to bbserial-rebind.service (runs
#     once, before bbctrl, instead of after bbctrl is already
#     listening on the serial port).
#   - startx moved to kiosk.service so chromium starts in parallel
#     with bbctrl rather than blocking on rc.local.
#   - rc.local no longer keeps the Pi in 'starting' state forever,
#     which fixes systemd-analyze.

set -e

# Mount /boot read only
mount -o remount,ro /boot 2>/dev/null || true

# Set SPI GPIO mode
gpio mode 27 alt3 || true

# Create browser memory limited cgroup
if [ -d /sys/fs/cgroup/memory ]; then
    CGROUP=/sys/fs/cgroup/memory/chrome
    [ -d "$CGROUP" ] || mkdir -p "$CGROUP"
    chown -R pi:pi "$CGROUP"
    echo 650000000 > "$CGROUP/memory.soft_limit_in_bytes"
    echo 750000000 > "$CGROUP/memory.limit_in_bytes"
fi

# Stop boot splash; harmless if plymouth already gone.
plymouth quit 2>/dev/null || true

# Start X (chromium kiosk) in the background so rc.local can exit and
# late-boot units (bbctrl logrotate, etc.) don't block on it. Output
# is redirected so the journal doesn't fill up with X warnings.
cd /home/pi
# `-- -nocursor` hides the X pointer; this is a touchscreen kiosk and
# the mouse cursor only gets in the way.
nohup sudo -u pi startx -- -nocursor >/var/log/onefin-x.log 2>&1 &
disown

exit 0