[mpc83xx]: FIT uImage support for the MPC8377-WLAN

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19094 3c298f89-4303-0410-b956-a3cf2f4a3e73

5 files changed, 240 insertions, 7 deletions

diff --git a/target/linux/mpc83xx/config-default b/target/linux/mpc83xx/config-default
index 955ad9a74..bbb69d5c6 100644
--- a/target/linux/mpc83xx/config-default
+++ b/target/linux/mpc83xx/config-default
@@ -38,6 +38,7 @@ CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
 # CONFIG_EDAC is not set
 # CONFIG_EMBEDDED6xx is not set
+CONFIG_EXTRA_TARGETS="uImage.fit.mpc8377_wlan"
 CONFIG_FORCE_MAX_ZONEORDER=11
 # CONFIG_FSL_EMB_PERFMON is not set
 CONFIG_FSL_PCI=y
diff --git a/target/linux/mpc83xx/files/scripts/mkits.sh b/target/linux/mpc83xx/files/scripts/mkits.sh
new file mode 100755
index 000000000..3b02b6950
--- /dev/null
+++ b/target/linux/mpc83xx/files/scripts/mkits.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+#
+# Licensed under the terms of the GNU GPL License version 2 or later.
+#
+# Author: Peter Tyser <ptyser@xes-inc.com>
+#
+# U-Boot firmware supports the booting of images in the Flattened Image
+# Tree (FIT) format.  The FIT format uses a device tree structure to
+# describe a kernel image, device tree blob, ramdisk, etc.  This script
+# creates an Image Tree Source (.its file) which can be passed to the
+# 'mkimage' utility to generate an Image Tree Blob (.itb file).  The .itb
+# file can then be booted by U-Boot (or other bootloaders which support
+# FIT images).  See doc/uImage.FIT/howto.txt in U-Boot source code for
+# additional information on FIT images.
+#
+
+usage() {
+	echo "Usage: `basename $0` -A arch -C comp -a addr -e entry" \
+		"-v version -k kernel [-d dtb] -o its_file"
+	echo -e "\t-A ==> set architecture to 'arch'"
+	echo -e "\t-C ==> set compression type 'comp'"
+	echo -e "\t-a ==> set load address to 'addr' (hex)"
+	echo -e "\t-e ==> set entry point to 'entry' (hex)"
+	echo -e "\t-v ==> set kernel version to 'version'"
+	echo -e "\t-k ==> include kernel image 'kernel'"
+	echo -e "\t-d ==> include Device Tree Blob 'dtb'"
+	echo -e "\t-o ==> create output file 'its_file'"
+	exit 1
+}
+
+while getopts ":A:C:a:d:e:k:o:v:" OPTION
+do
+	case $OPTION in
+		A ) ARCH=$OPTARG;;
+		C ) COMPRESS=$OPTARG;;
+		a ) LOAD_ADDR=$OPTARG;;
+		d ) DTB=$OPTARG;;
+		e ) ENTRY_ADDR=$OPTARG;;
+		k ) KERNEL=$OPTARG;;
+		o ) OUTPUT=$OPTARG;;
+		v ) VERSION=$OPTARG;;
+		* ) echo "Invalid option passed to '$0' (options:$@)"
+		usage;;
+	esac
+done
+
+# Make sure user entered all required parameters
+if [ -z "${ARCH}" ] || [ -z "${COMPRESS}" ] || [ -z "${LOAD_ADDR}" ] || \
+	[ -z "${ENTRY_ADDR}" ] || [ -z "${VERSION}" ] || [ -z "${KERNEL}" ] || \
+	[ -z "${OUTPUT}" ]; then
+	usage
+fi
+
+# Create a default, fully populated DTS file
+DATA="/dts-v1/;
+
+/ {
+	description = \"Linux kernel ${VERSION}\";
+	#address-cells = <1>;
+
+	images {
+		kernel@1 {
+			description = \"Linux Kernel ${VERSION}\";
+			data = /incbin/(\"${KERNEL}\");
+			type = \"kernel\";
+			arch = \"${ARCH}\";
+			os = \"linux\";
+			compression = \"${COMPRESS}\";
+			load = <${LOAD_ADDR}>;
+			entry = <${ENTRY_ADDR}>;
+			hash@1 {
+				algo = \"crc32\";
+			};
+			hash@2 {
+				algo = \"sha1\";
+			};
+		};
+
+		fdt@1 { /* start fdt */
+			description = \"Flattened Device Tree blob\";
+			data = /incbin/(\"${DTB}\");
+			type = \"flat_dt\";
+			arch = \"${ARCH}\";
+			compression = \"none\";
+			hash@1 {
+				algo = \"crc32\";
+			};
+			hash@2 {
+				algo = \"sha1\";
+			};
+		}; /* end fdt */
+	};
+
+	configurations {
+		default = \"config@1\";
+		config@1 {
+			description = \"Default Linux kernel\";
+			kernel = \"kernel@1\";
+			fdt = \"fdt@1\";
+		};
+	};
+};"
+
+# Conditionally strip fdt information out of tree
+if [ -z "${DTB}" ]; then
+	DATA=`echo "$DATA" | sed '/start fdt/,/end fdt/d'`
+	DATA=`echo "$DATA" | sed '/fdt/d'`
+fi
+
+# Write .its file to disk
+echo "$DATA" > ${OUTPUT}
diff --git a/target/linux/mpc83xx/image/Makefile b/target/linux/mpc83xx/image/Makefile
index 8004f746b..ed0012899 100644
--- a/target/linux/mpc83xx/image/Makefile
+++ b/target/linux/mpc83xx/image/Makefile
@@ -9,7 +9,6 @@ include $(INCLUDE_DIR)/image.mk
 
 
 define Image/Prepare
-	$(LINUX_DIR)/scripts/dtc/dtc -O dtb -R 4 -S 0x20000 $(LINUX_DIR)/arch/powerpc/boot/dts/mpc8377_wlan.dts > $(KDIR)/openwrt-mpc8377_wlan.dtb
 endef
 
 define Image/BuildKernel
@@ -22,12 +21,10 @@ endef
 
 define Image/Build/squashfs
 	$(call prepare_generic_squashfs,$(KDIR)/root.squashfs)
-# We'll do FIT here
-#	( \
-#		dd if=$(LINUX_DIR)/arch/powerpc/boot/uImage bs=1920k conv=sync; \
-#		dd if=$(KDIR)/openwrt-mpc8377_wlan.dtb bs=128k conv=sync; \
-#		dd if=$(KDIR)/root.$(1) bs=256k conv=sync; \
-#	) > $(BIN_DIR)/openwrt-$(BOARD)-mpc8377_wlan-$(1).img
+	( \
+		dd if=$(LINUX_DIR)/arch/powerpc/boot/uImage.fit.mpc8377_wlan bs=3072k conv=sync; \
+		dd if=$(KDIR)/root.$(1) bs=256k conv=sync; \
+	) > $(BIN_DIR)/openwrt-$(BOARD)-mpc8377_wlan-$(1).img
 endef
 
 $(eval $(call BuildImage))
diff --git a/target/linux/mpc83xx/patches/005-powerpc_mkuboot.patch b/target/linux/mpc83xx/patches/005-powerpc_mkuboot.patch
new file mode 100644
index 000000000..8e200b1a6
--- /dev/null
+++ b/target/linux/mpc83xx/patches/005-powerpc_mkuboot.patch
@@ -0,0 +1,30 @@
+--- a/arch/powerpc/boot/wrapper
++++ b/arch/powerpc/boot/wrapper
+@@ -43,6 +43,9 @@ gzip=.gz
+ # cross-compilation prefix
+ CROSS=
+ 
++# mkimage wrapper script
++MKIMAGE=$srctree/scripts/mkuboot.sh
++
+ # directory for object and other files used by this script
+ object=arch/powerpc/boot
+ objbin=$object
+@@ -262,7 +265,7 @@ membase=`${CROSS}objdump -p "$kernel" | 
+ case "$platform" in
+ uboot)
+     rm -f "$ofile"
+-    mkimage -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
++    ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
+ 	$uboot_version -d "$vmz" "$ofile"
+     if [ -z "$cacheit" ]; then
+ 	rm -f "$vmz"
+@@ -322,7 +325,7 @@ coff)
+     ;;
+ cuboot*)
+     gzip -f -9 "$ofile"
+-    mkimage -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
++    ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
+             $uboot_version -d "$ofile".gz "$ofile"
+     ;;
+ treeboot*)
diff --git a/target/linux/mpc83xx/patches/006-powerpc_create_fit_uImages.patch b/target/linux/mpc83xx/patches/006-powerpc_create_fit_uImages.patch
new file mode 100644
index 000000000..d553c675d
--- /dev/null
+++ b/target/linux/mpc83xx/patches/006-powerpc_create_fit_uImages.patch
@@ -0,0 +1,94 @@
+--- a/arch/powerpc/Makefile
++++ b/arch/powerpc/Makefile
+@@ -157,7 +157,8 @@ drivers-$(CONFIG_OPROFILE)	+= arch/power
+ # Default to zImage, override when needed
+ all: zImage
+ 
+-BOOT_TARGETS = zImage zImage.initrd uImage zImage% dtbImage% treeImage.% cuImage.% simpleImage.%
++BOOT_TARGETS = zImage zImage.initrd uImage uImage.fit.% zImage% dtbImage% \
++	       treeImage.% cuImage.% simpleImage.%
+ 
+ PHONY += $(BOOT_TARGETS)
+ 
+@@ -173,6 +174,7 @@ define archhelp
+   @echo '* zImage          - Build default images selected by kernel config'
+   @echo '  zImage.*        - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
+   @echo '  uImage          - U-Boot native image format'
++  @echo '  uImage.fit.<dt> - U-Boot Flattened Image Tree image format'
+   @echo '  cuImage.<dt>    - Backwards compatible U-Boot image for older'
+   @echo '                    versions which do not support device trees'
+   @echo '  dtbImage.<dt>   - zImage with an embedded device tree blob'
+--- a/arch/powerpc/boot/.gitignore
++++ b/arch/powerpc/boot/.gitignore
+@@ -19,6 +19,7 @@ kernel-vmlinux.strip.c
+ kernel-vmlinux.strip.gz
+ mktree
+ uImage
++uImage.fit.*
+ cuImage.*
+ dtbImage.*
+ treeImage.*
+--- a/arch/powerpc/boot/Makefile
++++ b/arch/powerpc/boot/Makefile
+@@ -306,6 +306,9 @@ $(obj)/zImage.iseries: vmlinux
+ $(obj)/uImage: vmlinux $(wrapperbits)
+ 	$(call if_changed,wrap,uboot)
+ 
++$(obj)/uImage.fit.%: vmlinux $(obj)/%.dtb $(wrapperbits)
++	$(call if_changed,wrap,uboot.fit,,$(obj)/$*.dtb)
++
+ $(obj)/cuImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits)
+ 	$(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)
+ 
+@@ -345,7 +348,7 @@ install: $(CONFIGURE) $(addprefix $(obj)
+ 
+ # anything not in $(targets)
+ clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \
+-	zImage zImage.initrd zImage.chrp zImage.coff zImage.holly \
++	uImage.* zImage zImage.initrd zImage.chrp zImage.coff zImage.holly \
+ 	zImage.iseries zImage.miboot zImage.pmac zImage.pseries \
+ 	simpleImage.* otheros.bld *.dtb
+ 
+--- a/arch/powerpc/boot/wrapper
++++ b/arch/powerpc/boot/wrapper
+@@ -46,6 +46,9 @@ CROSS=
+ # mkimage wrapper script
+ MKIMAGE=$srctree/scripts/mkuboot.sh
+ 
++# script to generate an .its file for uImage.fit.* images
++MKITS=$srctree/scripts/mkits.sh
++
+ # directory for object and other files used by this script
+ object=arch/powerpc/boot
+ objbin=$object
+@@ -156,7 +159,7 @@ coff)
+     lds=$object/zImage.coff.lds
+     link_address='0x500000'
+     ;;
+-miboot|uboot)
++miboot|uboot|uboot.fit)
+     # miboot and U-boot want just the bare bits, not an ELF binary
+     ext=bin
+     objflags="-O binary"
+@@ -272,6 +275,21 @@ uboot)
+     fi
+     exit 0
+     ;;
++uboot.fit)
++    rm -f "$ofile"
++    ${MKITS} -A ppc -C gzip -a $membase -e $membase -v $version \
++	-d "$srctree/$dtb" -k "$srctree/$vmz" -o "$object/uImage.its"
++
++    # mkimage calls dtc for FIT images so use kernel dtc if necessary
++    export PATH=$PATH:$srctree/scripts/dtc
++
++    ${MKIMAGE} -f "$object/uImage.its" "$ofile"
++    rm "$object/uImage.its"
++    if [ -z "$cacheit" ]; then
++	rm -f "$vmz"
++    fi
++    exit 0
++    ;;
+ esac
+ 
+ addsec() {