Removing first byte from MEMD binary

Change-Id: I8cd48e40be7e3f756daba2019e410881d563085d
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/46118
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Stephen M. Cprek <smcprek@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 19 insertions, 1 deletions

diff --git a/src/build/buildpnor/memd_creation.pl b/src/build/buildpnor/memd_creation.pl
index aa0298988..cf549a5bf 100755
--- a/src/build/buildpnor/memd_creation.pl
+++ b/src/build/buildpnor/memd_creation.pl
@@ -101,9 +101,27 @@ print $fh $num_bin;
 #   Read in the MEMD binary, and concatenate to this file.
 foreach my $file (@memd_files)
 {
+    # Checking that first byte equals "84"
+    # The VPD spec has '84' as their first byte for a record, however it is
+    # not needed for the hostboot structure to add in into the VPD structure,
+    # so we remove it here before creating the MEMD binary
+    my $first_byte = `head -c 1 $file`;
+    die "System command failed: $?" if $?;
+
+    $first_byte =~ s/(.)/sprintf("%x",ord($1))/eg;
+    if(!($first_byte == 84))
+    {
+        die "Incorrect first byte, MEMD file is invalid";
+    }
+
+    # Removing the first byte of the MEMD binary
+    my $new_file = "edited_memd.dat";
+    run_command("tail -c +2 $file > $new_file");
+    run_command("mv $new_file $file");
+
     seek($fh, $offset, 0);
     print "Writing the file $file...\n";
-    open(my $in_file, '<', $file) or die "Cound not open file '$file' $!";
+    open(my $in_file, '<', $file) or die "Could not open file '$file' $!";
 
     while ( <$in_file> )
     {