From ae5c88f29a9d169f366ba7d3cb656d8cbcbd3c55 Mon Sep 17 00:00:00 2001
From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Date: Mon, 2 Nov 2015 08:09:32 +0100
Subject: nv-conf-systemd: cpu hot-plug configuration and startup

Systemd startup script for NVIDIA T30 CPU hot-plug configuration.
---
 recipes-core/nv-conf/files/nv-conf.service | 12 ++++++++++
 recipes-core/nv-conf/files/nv-conf.sh      | 35 ++++++++++++++++++++++++++++++
 recipes-core/nv-conf/nv-conf-systemd.bb    | 32 +++++++++++++++++++++++++++
 3 files changed, 79 insertions(+)
 create mode 100644 recipes-core/nv-conf/files/nv-conf.service
 create mode 100644 recipes-core/nv-conf/files/nv-conf.sh
 create mode 100644 recipes-core/nv-conf/nv-conf-systemd.bb

(limited to 'recipes-core')

diff --git a/recipes-core/nv-conf/files/nv-conf.service b/recipes-core/nv-conf/files/nv-conf.service
new file mode 100644
index 0000000..3226c6b
--- /dev/null
+++ b/recipes-core/nv-conf/files/nv-conf.service
@@ -0,0 +1,12 @@
+[Unit]
+Description=Enable NVIDIA T30 CPU Hot-Plugging
+DefaultDependencies=no
+After=sysinit.target
+ 
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/bin/nv-conf.sh
+ 
+[Install]
+WantedBy=sysinit.target
diff --git a/recipes-core/nv-conf/files/nv-conf.sh b/recipes-core/nv-conf/files/nv-conf.sh
new file mode 100644
index 0000000..6376c5d
--- /dev/null
+++ b/recipes-core/nv-conf/files/nv-conf.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+# NVIDIA specific init script
+
+# power state
+if [ -e /sys/power/state ]; then
+	chmod 0666 /sys/power/state
+fi
+
+# turn off low-power core migration for now
+if [ -e /sys/module/cpu_tegra3/parameters/no_lp ] ; then
+	echo Y > /sys/module/cpu_tegra3/parameters/no_lp
+fi
+
+# enable CPU hot-plugging
+if [ -e /sys/module/cpu_tegra3/parameters/auto_hotplug ] ; then
+	echo 1 > /sys/module/cpu_tegra3/parameters/auto_hotplug
+fi
+
+# lp2 idle state
+if [ -e /sys/module/cpuidle/parameters/lp2_in_idle ] ; then
+	echo "Y" > /sys/module/cpuidle/parameters/lp2_in_idle
+fi
+
+# mmc read ahead size
+if [ -e /sys/block/mmcblk0/queue/read_ahead_kb ]; then
+	echo 2048 > /sys/block/mmcblk0/queue/read_ahead_kb
+fi
+if [ -e /sys/block/mmcblk1/queue/read_ahead_kb ]; then
+	echo 2048 > /sys/block/mmcblk1/queue/read_ahead_kb
+fi
+if [ -e /sys/block/mmcblk2/queue/read_ahead_kb ]; then
+	echo 2048 > /sys/block/mmcblk2/queue/read_ahead_kb
+fi
+
+exit 0
diff --git a/recipes-core/nv-conf/nv-conf-systemd.bb b/recipes-core/nv-conf/nv-conf-systemd.bb
new file mode 100644
index 0000000..c592bc3
--- /dev/null
+++ b/recipes-core/nv-conf/nv-conf-systemd.bb
@@ -0,0 +1,32 @@
+SECTION = "sysinit"
+SUMMARY = "NVIDIA T30 CPU hot-plug configuration and startup"
+RDEPENDS_${PN} = ""
+# The license is meant for this recipe and the files it installs.
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COREBASE}/LICENSE;md5=4d92cd373abda3937c2bc47fbc49d690"
+
+PR = "r1"
+
+inherit allarch systemd
+
+SRC_URI = " \
+    file://nv-conf.sh \
+    file://nv-conf.service \
+"
+
+do_install() {
+    install -d ${D}/${bindir}
+    install -m 0755 ${WORKDIR}/nv-conf.sh ${D}/${bindir}/
+
+    install -d ${D}${systemd_unitdir}/system/
+    install -m 0644 ${WORKDIR}/nv-conf.service ${D}${systemd_unitdir}/system
+}
+
+FILES_${PN} += " \
+    ${systemd_unitdir}/system \
+"
+
+NATIVE_SYSTEMD_SUPPORT = "1"
+SYSTEMD_PACKAGES = "${PN}"
+SYSTEMD_SERVICE_${PN} = "nv-conf.service"
+
-- 
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