Enable testing without CAN hardwarequillback_16.93.0quillback_16.92.0quillback_16.91.1quillback_16.91.0quillback/16.93.0quillback/16.92.0quillback/16.91.1quillback/16.91.0pike_15.92.0pike_15.91.1pike_15.91.0pike/15.92.0pike/15.91.1pike/15.91.0octopus_14.94.0octopus_14.93.0octopus_14.92.0octopus_14.91.0octopus/14.94.0octopus/14.93.0octopus/14.92.0octopus/14.91.0needlefish_13.93.0needlefish_13.92.0needlefish_13.91.0needlefish/13.93.0needlefish/13.92.0needlefish/13.91.0marlin_12.93.0marlin_12.92.0marlin_12.91.0marlin_12.90.1marlin_12.90.0marlin/12.93.0marlin/12.92.0marlin/12.91.0marlin/12.90.1marlin/12.90.0lamprey_11.92.0lamprey_11.91.0lamprey/11.92.0lamprey/11.91.0koi_10.93.0koi_10.92.0koi_10.91.0koi/10.93.0koi/10.92.0koi/10.91.016.93.016.92.016.91.116.91.015.92.015.91.115.91.014.94.014.93.014.92.014.91.013.93.013.92.013.91.012.93.012.92.012.91.012.90.112.90.011.92.011.91.010.93.010.92.010.91.0

Changes:
- Add can-dev-mapping-helper support changes from meta-agl-demo.
  It is less than ideal to duplicate them, but the timing of the
  planned layer reorganization and slimming down of meta-agl makes
  this seem less hassle.  Once the shift to the new layout is done,
  things can be rationalized as necessary.
- Also add the simple_can_simulator.py script, since without any
  physical CAN connection something is needed to drive testing.

Bug-AGL: SPEC-3689

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I655409806026024c804942415ac476e59b916c28

5 files changed, 76 insertions, 0 deletions

diff --git a/recipes-apis/agl-service-can-low-level/agl-service-can-low-level_git.bbappend b/recipes-apis/agl-service-can-low-level/agl-service-can-low-level_git.bbappend
new file mode 100644
index 0000000..4f28210
--- /dev/null
+++ b/recipes-apis/agl-service-can-low-level/agl-service-can-low-level_git.bbappend
@@ -0,0 +1,10 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+
+SRC_URI += "file://can-dev-mapping-helper.conf"
+
+do_install_append() {
+    install -D -m 0644 ${WORKDIR}/can-dev-mapping-helper.conf \
+        ${D}${sysconfdir}/systemd/system/afm-service-agl-service-can-low-level-.service.d/can-dev-mapping-helper.conf
+}
+
+RDEPENDS_${PN} += "can-dev-mapping-helper"
diff --git a/recipes-apis/agl-service-can-low-level/can-dev-mapping-helper_1.0.bb b/recipes-apis/agl-service-can-low-level/can-dev-mapping-helper_1.0.bb
new file mode 100644
index 0000000..37793fd
--- /dev/null
+++ b/recipes-apis/agl-service-can-low-level/can-dev-mapping-helper_1.0.bb
@@ -0,0 +1,21 @@
+SUMMARY     = "Systemd unit for agl-service-can-low-level CAN device helper"
+LICENSE     = "MIT"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+inherit systemd allarch
+
+SRC_URI = "file://can-dev-mapping-helper.service \
+           file://can-dev-mapping-helper.sh \
+"
+
+do_configure[noexec] = "1"
+do_compile[noexec] = "1"
+
+do_install() {
+    install -D -m 0644 ${WORKDIR}/${BPN}.service ${D}${systemd_system_unitdir}/${BPN}.service
+    install -D -m 0755 ${WORKDIR}/${BPN}.sh ${D}${sbindir}/${BPN}.sh
+}
+
+FILES_${PN} += "${systemd_system_unitdir}"
+
+RDEPENDS_${PN} += "bash"
diff --git a/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.conf b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.conf
new file mode 100644
index 0000000..c89cc4d
--- /dev/null
+++ b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.conf
@@ -0,0 +1,3 @@
+[Unit]
+Wants=can-dev-mapping-helper.service
+After=can-dev-mapping-helper.service
diff --git a/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.service b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.service
new file mode 100644
index 0000000..0436716
--- /dev/null
+++ b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=CAN interface helper
+
+[Service]
+ExecStart=/usr/sbin/can-dev-mapping-helper.sh
+Type=oneshot
diff --git a/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh
new file mode 100644
index 0000000..c81014f
--- /dev/null
+++ b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+#
+# Script to bring up CAN interfaces configured in /etc/dev-mapping.conf
+# as vcan interfaces if no physical interface is present.
+#
+
+vcan_up() {
+    if [ -n "$1" ]; then
+        echo "Bringing up $1 as virtual CAN device"
+        ip link add dev $1 type vcan
+        ip link set up $1
+    fi
+}
+
+if [ ! -f /etc/dev-mapping.conf ]; then
+    exit 0
+fi
+
+hs=$(grep ^hs= /etc/dev-mapping.conf |cut -d= -f2 |tr -d '"')
+ls=$(grep ^ls= /etc/dev-mapping.conf |cut -d= -f2 |tr -d '"')
+
+if [ -n "$hs" ]; then
+    echo "Checking $hs"
+    if ! ifconfig $hs >/dev/null 2>&1; then
+        vcan_up $hs
+    fi
+fi
+if [ -n "$ls" -a "$ls" != "$hs" ]; then
+    echo "Checking $ls"
+    if ! ifconfig $ls >/dev/null 2>&1; then
+        vcan_up $ls
+    fi
+fi
+
+exit 0