From 2a7348129a42f21095fcd62e47a035f78d254130 Mon Sep 17 00:00:00 2001
From: Adrian Dudau <adrian.dudau@enea.com>
Date: Thu, 12 Dec 2013 17:36:38 +0100
Subject: initial commit of Enea Linux 3.1

Migrated from the internal git server on the dora-enea branch

Signed-off-by: Adrian Dudau <adrian.dudau@enea.com>
---
 recipes-kernel/pramfs-init/files/pramfs_init | 80 ++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 recipes-kernel/pramfs-init/files/pramfs_init

(limited to 'recipes-kernel/pramfs-init/files')

diff --git a/recipes-kernel/pramfs-init/files/pramfs_init b/recipes-kernel/pramfs-init/files/pramfs_init
new file mode 100644
index 0000000..64c7bc2
--- /dev/null
+++ b/recipes-kernel/pramfs-init/files/pramfs_init
@@ -0,0 +1,80 @@
+#!/bin/sh
+#set -e
+
+echo "Setting up pramfs"
+
+# ensure the required binaries are present
+#[ -x /sbin/modprobe ] || exit 1
+[ -x /bin/mount ] || exit 1
+[ -x /bin/grep ] || exit 1
+[ -x /bin/cat ] || exit 1
+[ -x /bin/sed ] || exit 1
+
+#modprobe pramfs
+mkdir -p /mnt/pram
+
+case "$1" in
+  start)
+	# Figure out RAM for pramfs
+	# This requires a kernel cmdline resevation of PRAMFS physmem 
+	# in format memmap=16M$0x7000000
+	grep memmap /proc/cmdline > /dev/null
+	if [ $? -eq 0 ]; then
+   	   addr=$(sed 's/.*memmap=\([^ ]*\)\$\([^ ]*\).*/\2/' < /proc/cmdline)
+   	   size=$(sed 's/.*memmap=\([^ ]*\)\$\([^ ]*\).*/\1/' < /proc/cmdline)
+
+   	   if [ -d /seed ]; then
+      	      echo "Init new pramfs"
+      	      mount -t pramfs -o physaddr=$addr,init=$size,bs=1k none /mnt/pram > /dev/null 2>&1
+      	      cp /seed/* /mnt/pram
+      	      echo "0" > /mnt/pram/kcount
+   	   else
+	      echo "Mounting old pramfs"
+      	      mount -t pramfs -o physaddr=$addr,bs=1k none /mnt/pram > /dev/null 2>&1
+	      if [ $? -ne 0 ]; then
+		  echo "Mounting old pramfs failed, zeroing"
+		  mount -t pramfs -o physaddr=$addr,init=$size,bs=1k none /mnt/pram > /dev/null 2>&1
+		  if [ $? -ne 0 ]; then
+		      echo "All attempts to mount pramfs has failed, exiting"
+		      rm -fr /mnt/pram
+		      exit 1
+		  fi
+		  echo "0" > /mnt/pram/kcount
+	      fi
+   	   fi
+
+#          echo "* Setting up kexec"
+#          kexec -l --reuse-cmdline --initrd=/mnt/pram/initramfs.cpio.gz /mnt/pram/vmlinuz
+
+    	  # Calculate number of boots
+   	  export KCOUNT=$(expr $(cat /mnt/pram/kcount) + 1)
+      	  echo $KCOUNT > /mnt/pram/kcount
+       else
+          KCOUNT="no-mem"
+   	  echo "Can't find memory area for pram fs"
+	  rm -fr /mnt/pram
+       fi
+
+       echo "PRAMFS boot count: $KCOUNT"
+#      echo "kexec -e to kexec and keep persistent files in /mnt/pram"
+	;;
+  stop)
+	echo
+	;;
+  restart)
+	$0 stop
+	$0 start
+	;;
+  *)
+	echo "usage: $0 { start | stop | restart }" >&2
+	exit 1
+	;;
+esac
+
+exit 0
+
+
+
+
+
+
-- 
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