Openbmc dev snapshot.

1 files changed, 133 insertions, 0 deletions

diff --git a/common/recipes-utils/openbmc-utils/files/openbmc-utils.sh b/common/recipes-utils/openbmc-utils/files/openbmc-utils.sh
new file mode 100644
index 0000000..885a6eb
--- /dev/null
+++ b/common/recipes-utils/openbmc-utils/files/openbmc-utils.sh
@@ -0,0 +1,133 @@
+# Copyright 2015-present Facebook. All Rights Reserved.
+#
+# This program file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program in a file named COPYING; if not, write to the
+# Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301 USA
+
+DEVMEM=/sbin/devmem
+SHADOW_GPIO=/tmp/gpionames
+
+devmem_set_bit() {
+    local addr
+    local val
+    addr=$1
+    val=$($DEVMEM $addr)
+    val=$((val | (0x1 << $2)))
+    $DEVMEM $addr 32 $val
+}
+
+devmem_clear_bit() {
+    local addr
+    local val
+    addr=$1
+    val=$($DEVMEM $addr)
+    val=$((val & ~(0x1 << $2)))
+    $DEVMEM $addr 32 $val
+}
+
+GPIODIR="/sys/class/gpio"
+GPIOEXPORT="$GPIODIR/export"
+
+gpio_dir() {
+    echo "$GPIODIR/gpio$1"
+}
+
+gpio_name2value() {
+    local first remaining base val
+    remaining=$1
+    base="${SHADOW_GPIO}/${remaining}"
+    if [ -L "${base}" ]; then
+        val=$(readlink -f ${base} 2>/dev/null)
+        if [ -n "${val}" ]; then
+            val=${val##*gpio}
+            if [ -n "${val}" ]; then
+                echo "$val"
+                return
+            fi
+        fi
+    fi
+    val=0
+    while [ -n "$remaining" ]; do
+        first=${remaining:0:1}
+        case "$first" in
+            [[:lower:]])
+                base=$(printf "%d" "'$first'")
+                base=$((base - 96))
+                val=$((val * 26 + base))
+                ;;
+            [[:upper:]])
+                base=$(printf "%d" "'$first'")
+                base=$((base - 64))
+                val=$((val * 26 + base))
+                ;;
+            *)
+                if [ $val -gt 0 ]; then
+                    val=$((val-1))
+                fi
+                val=$((val * 8 + $remaining))
+                break
+                ;;
+        esac
+        remaining=${remaining:1}
+    done
+    echo "$val"
+}
+
+gpio_export() {
+    local gpio
+    gpio=$(gpio_name2value $1)
+    dir=$(gpio_dir $gpio)
+    if [ ! -d ${dir} ]; then
+        echo $gpio > $GPIOEXPORT
+    fi
+    if [ $# -gt 1 ]; then
+        if [ ! -d  $SHADOW_GPIO ]; then
+            mkdir -p $SHADOW_GPIO
+        fi
+        ln -s $dir $SHADOW_GPIO/$2
+    fi
+}
+
+gpio_set() {
+    local gpio
+    local val
+    gpio=$(gpio_name2value $1)
+    val=$2
+    dir=$(gpio_dir $gpio)
+    if [ ! -d ${dir} ]; then
+        echo $gpio > $GPIOEXPORT
+    fi
+    echo $val > ${dir}/value
+    echo out > ${dir}/direction
+}
+
+gpio_get() {
+    local gpio
+    local val
+    gpio=$(gpio_name2value $1)
+    dir=$(gpio_dir $gpio)
+    if [ ! -d ${dir} ]; then
+        echo $gpio > $GPIOEXPORT
+    fi
+    echo in > ${dir}/direction
+    cat ${dir}/value
+}
+
+if [ -f "/usr/local/bin/soc-utils.sh" ]; then
+    source "/usr/local/bin/soc-utils.sh"
+fi
+
+if [ -f "/usr/local/bin/board-utils.sh" ]; then
+    source "/usr/local/bin/board-utils.sh"
+fi