9ec39d0745
Signed-off-by: Xin Shi <shixin21@huawei.com> (cherry picked from commit decc956d9cea842432cea9e6d6f03e520b9b9414)
171 lines
5.5 KiB
Diff
171 lines
5.5 KiB
Diff
From 0b43b9daeb0b194cd064830728b36a8cccbbea9b Mon Sep 17 00:00:00 2001
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From: Xin Shi <shixin21@huawei.com>
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Date: Thu, 24 Aug 2023 10:02:32 +0800
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Subject: [PATCH 5/5] embedded: use yocto configs
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Signed-off-by: Xin Shi <shixin21@huawei.com>
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---
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embedded/00-create-volatile.conf | 12 ++++
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embedded/init | 104 +++++++++++++++++++++++++++++++
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embedded/touchscreen.rules | 18 ++++++
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3 files changed, 134 insertions(+)
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create mode 100644 embedded/00-create-volatile.conf
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create mode 100644 embedded/init
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create mode 100644 embedded/touchscreen.rules
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diff --git a/embedded/00-create-volatile.conf b/embedded/00-create-volatile.conf
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new file mode 100644
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index 0000000..55333b6
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--- /dev/null
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+++ b/embedded/00-create-volatile.conf
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@@ -0,0 +1,12 @@
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+#This goes hand-in-hand with the base-files of OE-Core. The file must
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+# be sorted before 'systemd.conf' because this attempts to create a file
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+# inside /var/log.
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+
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+
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+d /var/volatile/log - - - -
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+d /var/volatile/tmp 1777 - -
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+d /var/log 0750 root root -
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+f /var/log/wtmp 0640 root root -
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+f /var/log/btmp 0600 root root -
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+f /var/log/lastlog 0600 root root -
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+f /var/log/faillog 0600 root root -
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diff --git a/embedded/init b/embedded/init
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new file mode 100644
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index 0000000..4931b77
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--- /dev/null
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+++ b/embedded/init
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@@ -0,0 +1,104 @@
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+#!/bin/sh
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+
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+### BEGIN INIT INFO
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+# Provides: udev
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+# Required-Start: mountvirtfs
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+# Required-Stop:
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+# Default-Start: S
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+# Default-Stop:
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+# Short-Description: Start udevd, populate /dev and load drivers.
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+### END INIT INFO
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+
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+. /etc/init.d/functions
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+
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+export TZ=/etc/localtime
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+
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+[ -d /sys/class ] || exit 1
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+[ -r /proc/mounts ] || exit 1
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+[ -x @UDEVD@ ] || exit 1
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+[ -f /etc/default/udev-cache ] && . /etc/default/udev-cache
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+[ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
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+
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+readfile () {
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+ filename=$1
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+ READDATA=""
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+ if [ -r $filename ]; then
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+ while read line; do
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+ READDATA="$READDATA$line"
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+ done < $filename
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+ fi
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+}
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+
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+case "$1" in
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+ start)
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+ export ACTION=add
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+ # propagate /dev from /sys
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+ echo "Starting udev"
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+
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+ # mount the devtmpfs on /dev, if not already done
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+ LANG=C awk '$2 == "/dev" && ($3 == "devtmpfs") { exit 1 }' /proc/mounts && {
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+ mount -n -o mode=0755 -t devtmpfs none "/dev"
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+ }
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+ [ -e /dev/pts ] || mkdir -m 0755 /dev/pts
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+ [ -e /dev/shm ] || mkdir -m 1777 /dev/shm
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+ mount -a -t tmpfs 2>/dev/null
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+
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+ # cache handling
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+ if [ "$DEVCACHE" != "" ]; then
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+ readfile /proc/version
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+ VERSION="$READDATA"
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+ readfile /proc/cmdline
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+ CMDLINE="$READDATA"
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+ readfile /proc/devices
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+ DEVICES="$READDATA"
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+ readfile /proc/atags
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+ ATAGS="$READDATA"
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+
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+ if [ -e $DEVCACHE ]; then
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+ readfile /etc/udev/cache.data
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+ if [ "$READDATA" = "$VERSION$CMDLINE$DEVICES$ATAGS" ]; then
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+ (cd /; tar xf $DEVCACHE > /dev/null 2>&1)
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+ not_first_boot=1
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+ [ "$VERBOSE" != "no" ] && echo "udev: using cache file $DEVCACHE"
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+ [ -e /dev/shm/udev.cache ] && rm -f /dev/shm/udev.cache
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+ else
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+ echo "$VERSION$CMDLINE$DEVICES$ATAGS" > /dev/shm/udev.cache
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+ fi
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+ else
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+ echo "$VERSION$CMDLINE$DEVICES$ATAGS" > /dev/shm/udev.cache
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+ fi
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+ fi
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+
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+ # make_extra_nodes
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+ killproc systemd-udevd > "/dev/null" 2>&1
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+
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+ # trigger the sorted events
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+ echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug
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+ @UDEVD@ -d
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+
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+ udevadm control --env=STARTUP=1
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+ if [ "$not_first_boot" != "" ]; then
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+ udevadm trigger --action=add --subsystem-nomatch=tty --subsystem-nomatch=mem --subsystem-nomatch=vc --subsystem-nomatch=vtconsole --subsystem-nomatch=misc --subsystem-nomatch=dcon --subsystem-nomatch=pci_bus --subsystem-nomatch=graphics --subsystem-nomatch=backlight --subsystem-nomatch=video4linux --subsystem-nomatch=platform
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+ (udevadm settle --timeout=3; udevadm control --env=STARTUP=)&
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+ else
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+ udevadm trigger --action=add
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+ udevadm settle
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+ fi
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+ ;;
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+ stop)
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+ echo "Stopping udevd"
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+ start-stop-daemon --stop --name systemd-udevd --quiet
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+ ;;
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+ restart)
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+ $0 stop
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+ sleep 1
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+ $0 start
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+ ;;
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+ status)
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+ status systemd-udevd
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+ ;;
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+ *)
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+ echo "Usage: $0 {start|stop|status|restart}"
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+ exit 1
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+esac
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+exit 0
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diff --git a/embedded/touchscreen.rules b/embedded/touchscreen.rules
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new file mode 100644
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index 0000000..d83fd16
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--- /dev/null
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+++ b/embedded/touchscreen.rules
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@@ -0,0 +1,18 @@
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+# There are a number of modifiers that are allowed to be used in some
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+# of the different fields. They provide the following subsitutions:
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+#
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+# %n the "kernel number" of the device.
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+# For example, 'sda3' has a "kernel number" of '3'
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+# %e the smallest number for that name which does not matches an existing node
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+# %k the kernel name for the device
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+# %M the kernel major number for the device
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+# %m the kernel minor number for the device
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+# %b the bus id for the device
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+# %c the string returned by the PROGRAM
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+# %s{filename} the content of a sysfs attribute
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+# %% the '%' char itself
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+#
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+
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+# Create a symlink to any touchscreen input device
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+SUBSYSTEM=="input", KERNEL=="event[0-9]*", ATTRS{modalias}=="input:*-e0*,3,*a0,1,*18,*", SYMLINK+="input/touchscreen0"
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+SUBSYSTEM=="input", KERNEL=="event[0-9]*", ATTRS{modalias}=="ads7846", SYMLINK+="input/touchscreen0"
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--
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2.27.0
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