Merge branch 'tracking-hilt-zImage-dtb-combo' into integration-hilt-working-v3.14

* tracking-hilt-zImage-dtb-combo:
  hip04-d01.dtb: append hip04-d01.dtb at build time
  ARM: convert build of appended dtb zImage to list of dtbs
  ARM: add config option to build zImage/dtb combo

7 files changed, 50 insertions, 2 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 5b0cb17f10af..aefc4c887159 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1951,6 +1951,21 @@ config DEPRECATED_PARAM_STRUCT
 	  This was deprecated in 2001 and announced to live on for 5 years.
 	  Some old boot loaders still use this way.
 
+config BUILD_ARM_APPENDED_DTB_IMAGE
+	bool "Build a concatenated zImage/dtb by default"
+	depends on OF
+	help
+	  Enabling this option will cause a concatenated zImage and list of
+	  DTBs to be built by default (instead of a standalone zImage.)
+	  The image will built in arch/arm/boot/zImage-dtb
+
+config BUILD_ARM_APPENDED_DTB_IMAGE_NAMES
+	string "Default dtb names"
+	depends on BUILD_ARM_APPENDED_DTB_IMAGE
+	help
+	  Space separated list of names of dtbs to append when
+	  building a concatenated zImage-dtb.
+
 # Compressed boot loader in ROM.  Yes, we really want to ask about
 # TEXT and BSS so we preserve their values in the config files.
 config ZBOOT_ROM_TEXT
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 9a4fae86e19a..d84e76e30715 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -277,6 +277,8 @@ libs-y				:= arch/arm/lib/ $(libs-y)
 # Default target when executing plain make
 ifeq ($(CONFIG_XIP_KERNEL),y)
 KBUILD_IMAGE := xipImage
+else ifeq ($(CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE),y)
+KBUILD_IMAGE := zImage-dtb
 else
 KBUILD_IMAGE := zImage
 endif
@@ -314,6 +316,9 @@ PHONY += dtbs
 dtbs: scripts
 	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
 
+zImage-dtb: vmlinux scripts dtbs
+	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+
 # We use MRPROPER_FILES and CLEAN_FILES now
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
diff --git a/arch/arm/boot/.gitignore b/arch/arm/boot/.gitignore
index 3c79f85975aa..ad7a0253ea96 100644
--- a/arch/arm/boot/.gitignore
+++ b/arch/arm/boot/.gitignore
@@ -4,3 +4,4 @@ xipImage
 bootpImage
 uImage
 *.dtb
+zImage-dtb
\ No newline at end of file
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index ec2f8065f955..a30beab472e6 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -27,6 +27,14 @@ export ZRELADDR INITRD_PHYS PARAMS_PHYS
 
 targets := Image zImage xipImage bootpImage uImage
 
+DTB_NAMES := $(subst $\",,$(CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE_NAMES))
+ifneq ($(DTB_NAMES),)
+DTB_LIST := $(addsuffix .dtb,$(DTB_NAMES))
+else
+DTB_LIST := $(dtb-y)
+endif
+DTB_OBJS := $(addprefix $(obj)/dts/,$(DTB_LIST))
+
 ifeq ($(CONFIG_XIP_KERNEL),y)
 
 $(obj)/xipImage: vmlinux FORCE
@@ -55,6 +63,10 @@ $(obj)/zImage:	$(obj)/compressed/vmlinux FORCE
 	$(call if_changed,objcopy)
 	@$(kecho) '  Kernel: $@ is ready'
 
+$(obj)/zImage-dtb:	$(obj)/zImage $(DTB_OBJS) FORCE
+	$(call if_changed,cat)
+	@echo '  Kernel: $@ is ready'
+
 endif
 
 ifneq ($(LOADADDR),)
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index c2e1049b2fc1..8912f04cd6fb 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -324,13 +324,20 @@ dtb-$(CONFIG_ARCH_ZYNQ) += zynq-zc702.dtb \
 	zynq-zc706.dtb \
 	zynq-zed.dtb
 
+DTB_NAMES := $(subst $\",,$(CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE_NAMES))
+ifneq ($(DTB_NAMES),)
+DTB_LIST := $(addsuffix .dtb,$(DTB_NAMES))
+else
+DTB_LIST := $(dtb-y)
+endif
+
 targets += dtbs
-targets += $(dtb-y)
+targets += $(DTB_LIST)
 endif
 
 # *.dtb used to be generated in the directory above. Clean out the
 # old build results so people don't accidentally use them.
-dtbs: $(addprefix $(obj)/, $(dtb-y))
+dtbs: $(addprefix $(obj)/, $(DTB_LIST))
 	$(Q)rm -f $(obj)/../*.dtb
 
 clean-files := *.dtb
diff --git a/arch/arm/configs/hip04_defconfig b/arch/arm/configs/hip04_defconfig
index 0b30c7093b3b..3b545d0a5fd4 100644
--- a/arch/arm/configs/hip04_defconfig
+++ b/arch/arm/configs/hip04_defconfig
@@ -17,6 +17,8 @@ CONFIG_MCPM=y
 CONFIG_MCPM_QUAD_CLUSTER=y
 CONFIG_PREEMPT=y
 CONFIG_AEABI=y
+CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE=y
+CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE_NAMES="hip04-d01"
 CONFIG_ARM_APPENDED_DTB=y
 CONFIG_ARM_ATAG_DTB_COMPAT=y
 CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 79c059e70860..85c0e97b2238 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -274,6 +274,12 @@ $(obj)/%.dtb: $(src)/%.dts FORCE
 
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 
+# cat
+# ---------------------------------------------------------------------------
+# Concatentate multiple files together
+quiet_cmd_cat = CAT     $@
+cmd_cat = (cat $(filter-out FORCE,$^) > $@) || (rm -f $@; false)
+
 # Bzip2
 # ---------------------------------------------------------------------------