[coreboot] r234 - in buildrom-devel: bin config/platforms packages/coreboot-v2

[svn at coreboot.org]

Author: jcrouse
Date: 2008-09-24 00:15:47 +0200 (Wed, 24 Sep 2008)
New Revision: 234

Added:
   buildrom-devel/bin/construct-rom.sh
Modified:
   buildrom-devel/config/platforms/dbm690t.conf
   buildrom-devel/config/platforms/platforms.conf
   buildrom-devel/packages/coreboot-v2/coreboot.inc
Log:
buildrom: Add script to automatically pad ROMs

Many ROMs may need to be padded before use.  This script tries to do
this somewhat automatically.  If the platform needs the payload to be
padded to a power of 2, then it should set PAYLOAD_DOPAD to '-p'.
Otherwise, the script behaves as it normally does.

Signed-off-by: Jordan Crouse <jordan.crouse at amd.com>
Acked-by: Ward Vandewege <ward at gnu.org>


Added: buildrom-devel/bin/construct-rom.sh
===================================================================
--- buildrom-devel/bin/construct-rom.sh	                        (rev 0)
+++ buildrom-devel/bin/construct-rom.sh	2008-09-23 22:15:47 UTC (rev 234)
@@ -0,0 +1,51 @@
+#!/bin/sh -e
+# Usage: ./construct-rom.sh [-p] components ...
+
+DOPAD=0
+
+if [ "$1" == "-p" ]; then
+	DOPAD=1
+	shift
+fi
+
+COMPONENTS=$*
+
+if [ $DOPAD -eq 1 ]; then
+
+	ROMSIZE=0
+
+	# Get the size of all the components together
+
+	for c in $COMPONENTS; do
+		size=`du -b $c | cut -f1`
+		ROMSIZE=`expr $ROMSIZE + $size` || true
+	done
+
+	# Pad to a power of 2, starting with 128k
+	RSIZE=131072
+
+	while true; do
+		PAD=0
+
+		if [ $ROMSIZE -gt $RSIZE ]; then
+			RSIZE=`expr $RSIZE "*" 2`
+			continue
+		fi
+
+		if [ $ROMSIZE -lt $RSIZE ]; then
+			PAD=`expr $RSIZE - $ROMSIZE`
+		fi
+
+		break
+	done
+
+	PADFILE=`mktemp`
+	dd if=/dev/zero of=$PADFILE bs=1 count=$PAD > /dev/null 2>&1
+	COMPONENTS="$PADFILE $COMPONENTS"
+fi
+
+cat $COMPONENTS
+
+if [ $DOPAD -eq 1 ]; then
+	rm -rf $PADFILE
+fi

Modified: buildrom-devel/config/platforms/dbm690t.conf
===================================================================
--- buildrom-devel/config/platforms/dbm690t.conf	2008-09-23 22:02:55 UTC (rev 233)
+++ buildrom-devel/config/platforms/dbm690t.conf	2008-09-23 22:15:47 UTC (rev 234)
@@ -51,6 +51,9 @@
 CBV2_TDIR=dbm690t
 CBV2_TAG=3590
 
+# Tell construct-rom.sh to pad the ROM to a power of 2
+PLATFORM_DOPAD := -p
+
 # FILO configuration
 
 FILO_CONFIG=dbm690t-Config

Modified: buildrom-devel/config/platforms/platforms.conf
===================================================================
--- buildrom-devel/config/platforms/platforms.conf	2008-09-23 22:02:55 UTC (rev 233)
+++ buildrom-devel/config/platforms/platforms.conf	2008-09-23 22:15:47 UTC (rev 234)
@@ -6,6 +6,11 @@
 STRIP=strip
 AS=as
 
+# Each individual platform needs to decide if they want to pad the
+# ROM or not
+
+PLATFORM_DOPAD :=
+
 ##Include the correct platform configuration
 
 PLATFORM-y=

Modified: buildrom-devel/packages/coreboot-v2/coreboot.inc
===================================================================
--- buildrom-devel/packages/coreboot-v2/coreboot.inc	2008-09-23 22:02:55 UTC (rev 233)
+++ buildrom-devel/packages/coreboot-v2/coreboot.inc	2008-09-23 22:15:47 UTC (rev 234)
@@ -150,7 +150,7 @@
 
 $(OUTPUT_DIR)/$(TARGET_ROM): $(CBV2_COMPONENTS)
 	@ mkdir -p $(OUTPUT_DIR)
-	@ cat $(CBV2_COMPONENTS) > $@
+	@ $(BIN_DIR)/construct-rom.sh $(PLATFORM_DOPAD) $(CBV2_COMPONENTS) > $@
 
 generic-coreboot: $(OUTPUT_DIR)/$(TARGET_ROM)