meta-ibm: use ibm-ac-server MACHINEOVERRIDE

Use an override in bbappends in meta-witherspoon as described and
recommended in the "following best practices when creating layers"
section of the the Yocto development tasks manual.

ibm-ac-server represents common machine configuration shared by all of
IBMs "Accelerated Compute" class of servers.  Apply it wherever any
variables are un-bounded by any override.

This enables more flexible use of meta-witherspoon in build
configurations, and easy addition of machines to the layer.

(From meta-ibm rev: bb0e1d0699a4b9905c053c94af7d882cd71779fc)

Change-Id: I82f7338b0d7a64b5e7a67e19bcdff07f48a332d4
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/meta-ibm/meta-witherspoon/recipes-phosphor/chassis/vrm-control/ibm-ac-server/ir35221-unbind-bind.sh b/meta-ibm/meta-witherspoon/recipes-phosphor/chassis/vrm-control/ibm-ac-server/ir35221-unbind-bind.sh
new file mode 100644
index 000000000..85d77412d
--- /dev/null
+++ b/meta-ibm/meta-witherspoon/recipes-phosphor/chassis/vrm-control/ibm-ac-server/ir35221-unbind-bind.sh
@@ -0,0 +1,81 @@
+#!/bin/bash
+# #########################################################
+# Script to run on witherspoon BMC to unbind/bind the ir35221
+# driver's devices
+
+status=0
+max_retries=3
+driver_path="/sys/bus/i2c/drivers/ir35221/"
+platform_path="/sys/devices/platform/ahb/ahb:apb/ahb:apb:bus@1e78a000/"
+
+unbind_driver () {
+    echo $1 > $driver_path/unbind
+}
+
+bind_driver () {
+    device=$1
+    tries=0
+
+    until [ $tries -ge $max_retries ]; do
+        tries=$((tries+1))
+        ret=0
+        echo $device > $driver_path/bind || ret=$?
+        if [ $ret -ne 0 ]; then
+            echo "VRM $1 bind failed. Try $tries"
+            sleep 1
+        else
+            tries=$((max_retries+1))
+        fi
+    done
+
+    #Script will return a nonzero value if any binds fail.
+    if [ $ret -ne 0 ]; then
+        status=$ret
+    fi
+}
+
+if [ "$1" = "unbind" ]
+then
+    if [ -e $driver_path/4-0070 ]
+    then
+        unbind_driver "4-0070"
+    fi
+
+    if [ -e $driver_path/4-0071 ]
+    then
+        unbind_driver "4-0071"
+    fi
+
+    if [ -e $driver_path/5-0070 ]
+    then
+        unbind_driver "5-0070"
+    fi
+
+    if [ -e $driver_path/5-0071 ]
+    then
+        unbind_driver "5-0071"
+    fi
+elif [ "$1" = "bind" ]
+then
+    if [ -e $platform_path/1e78a140.i2c-bus/i2c-4/4-0070 ]
+    then
+        bind_driver "4-0070"
+    fi
+
+    if [ -e $platform_path/1e78a140.i2c-bus/i2c-4/4-0071 ]
+    then
+        bind_driver "4-0071"
+    fi
+
+    if [ -e $platform_path/1e78a180.i2c-bus/i2c-5/5-0070 ]
+    then
+        bind_driver "5-0070"
+    fi
+
+    if [ -e $platform_path/1e78a180.i2c-bus/i2c-5/5-0071 ]
+    then
+        bind_driver "5-0071"
+    fi
+fi
+
+exit $status