Fix BPM flash image script to properly calculate line length

Before this commit, the flash image script made certain assumptions
about the flash image file when calculating the number of bytes on a
line. Those assumptions aren't always true. Therefore, this commit adds
a function to properly determine the number of bytes on a line for any
arbitrary amount of extraneous characters on the line by stripping them
all off prior to calculation.

Change-Id: Ibeea1f62177109a512920be1434557ac55510743
RTC:212448
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/81947
Reviewed-by: Christian R Geddes <crgeddes@us.ibm.com>
Reviewed-by: William G Hoffa <wghoffa@us.ibm.com>
Reviewed-by: Roland Veloz <rveloz@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@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>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>

src/build/buildpnor/buildBpmFlashImages.pl

@@ -145,11 +145,6 @@ sub generateFirmwareImage
     use constant FW_START_ADDRESS_8000 => "\@8000";
     use constant FW_START_ADDRESS_A000 => "\@A000";
 
-    # Each line is plain text where each byte is separated by spaces.
-    # To determine how many bytes are on the line divide by characters per byte
-    # and number of spaces between bytes. 2 characters per byte + 1 space = 3
-    use constant BYTES_PER_LINE_EXCLUDING_SPACES => 3;
-
     # Spec for BPM updates says that the maximum size for the data portion of
     # the payload is 16 bytes
     use constant MAXIMUM_DATA_BYTES_FOR_PAYLOAD => 16;
@@ -211,7 +206,7 @@ sub generateFirmwareImage
         # The length of the payload data. The maximum size of payload data is 16
         # bytes which is conveniently the maximum size of any line in the file
         # minus spaces and carriage return/line feeds.
-        my $dataLength = length($line) / BYTES_PER_LINE_EXCLUDING_SPACES;
+        my $dataLength = calculateDataLength($line);
 
         if ($dataLength > MAXIMUM_DATA_BYTES_FOR_PAYLOAD)
         {
@@ -374,11 +369,6 @@ sub generateConfigImage
     use constant SEGMENT_B_START_ADDRESS => 0x100;
     use constant SEGMENT_A_START_ADDRESS => 0x180;
 
-    # Each line is plain text where each byte is separated by spaces.
-    # To determine how many bytes are on the line, divide by characters per byte
-    # and number of spaces between bytes. 2 characters per byte + 1 space = 3
-    use constant BYTES_PER_LINE_EXCLUDING_SPACES => 3;
-
     # Spec for BPM updates says that the maximum size for the data portion of
     # the payload is 16 bytes
     use constant MAXIMUM_DATA_BYTES_FOR_PAYLOAD => 16;
@@ -445,7 +435,7 @@ sub generateConfigImage
         # Bytes: The bytes to write to the BPM config data dump buffer.
 
         # The length of the line. The maximum size of any line is 16 bytes.
-        my $dataLength = length($line) / BYTES_PER_LINE_EXCLUDING_SPACES;
+        my $dataLength = calculateDataLength($line);
 
         if ($dataLength > MAXIMUM_DATA_BYTES_FOR_PAYLOAD)
         {
@@ -814,6 +804,29 @@ sub createFragment
     return $fragment;
 }
 
+################################################################################
+# @brief Calculates the data length of the line by stripping all spaces for it
+#        dividing by the number of bytes on the line.
+#
+# @param[in] i_line        The line to calculate the length on.
+#
+# @return                  The number of bytes on the line (length).
+################################################################################
+sub calculateDataLength
+{
+    my $i_line = shift;
+
+    # Strip all the spaces from the line.
+    $i_line =~ s/\s+//g;
+
+    # Each line is plain text where each byte is separated by spaces.
+    # To determine how many bytes are on the line, divide by characters per byte
+    use constant CHARS_PER_BYTE => 2;
+    my $dataLength = length($i_line) / CHARS_PER_BYTE;
+
+    return $dataLength;
+}
+
 __END__
 
 =head1 NAME