initial commit of Enea Linux 3.1HEADmaster

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

Signed-off-by: Adrian Dudau <adrian.dudau@enea.com>

1 files changed, 80 insertions, 0 deletions

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
+
+
+
+
+
+