[POWERPC] Use embedded dtc in kernel builds

This patch alters the kernel makefiles to build dtc from the sources
embedded in the previous patch.  It also changes the
arch/powerpc/boot/wrapper script to use the embedded dtc, rather than
expecting a copy of dtc already installed on the system.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index af01b4f8ade08a6629ca2f53ca7ae6759f6d756d..9149bb8ed03c9fbfd3f472fca3eac62f44d34bc3 100644 (file)
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -112,16 +112,51 @@ $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S FORCE
 $(obj)/wrapper.a: $(obj-wlib) FORCE
        $(call if_changed,bootar)
 
-hostprogs-y    := addnote addRamDisk hack-coff mktree
+hostprogs-y    := addnote addRamDisk hack-coff mktree dtc
 
 targets                += $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
 extra-y                := $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
                   $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
 
 wrapper                :=$(srctree)/$(src)/wrapper
-wrapperbits    := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
+wrapperbits    := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree dtc) \
                        $(wrapper) FORCE
 
+#############
+# Bits for building dtc
+# DTC_GENPARSER      := 1    # Uncomment to rebuild flex/bison output
+
+dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o srcpos.o checks.o
+dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
+dtc-objs := $(addprefix dtc-src/, $(dtc-objs))
+
+# prerequisites on generated files needs to be explicit
+$(obj)/dtc-src/dtc-parser.tab.o: $(obj)/dtc-src/dtc-parser.tab.c $(obj)/dtc-src/dtc-parser.tab.h
+$(obj)/dtc-src/dtc-lexer.lex.o:  $(obj)/dtc-src/dtc-lexer.lex.c $(obj)/dtc-src/dtc-parser.tab.h
+
+HOSTCFLAGS += -I$(src)/dtc-src/ -I$(src)/libfdt/
+
+targets += dtc-src/dtc-parser.tab.c
+targets += dtc-src/dtc-lexer.lex.c
+
+ifdef DTC_GENPARSER
+BISON = bison
+FLEX = flex
+
+quiet_cmd_bison = BISON   $@
+      cmd_bison = $(BISON) -o$@ -d $<; cp $@ $@_shipped
+quiet_cmd_flex = FLEX    $@
+      cmd_flex = $(FLEX) -o$@ $<; cp $@ $@_shipped
+
+$(obj)/dtc-src/dtc-parser.tab.c: $(src)/dtc-src/dtc-parser.y FORCE
+     $(call if_changed,bison)
+
+$(obj)/dtc-src/dtc-parser.tab.h: $(obj)/dtc-src/dtc-parser.tab.c
+
+$(obj)/dtc-src/dtc-lexer.lex.c: $(src)/dtc-src/dtc-lexer.l FORCE
+     $(call if_changed,flex)
+endif
+
 #############
 # Bits for building various flavours of zImage
 

diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index a591ced478758f00b38cf4f7d0ee24f6cc931ab7..f961cdeb97a24434647342bfadc237bd01eb0012 100755 (executable)
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -124,7 +124,7 @@ if [ -n "$dts" ]; then
     if [ -z "$dtb" ]; then
        dtb="$platform.dtb"
     fi
-    dtc -O dtb -o "$dtb" -b 0 -V 16 "$dts"
+    $object/dtc -O dtb -o "$dtb" -b 0 "$dts"
 fi
 
 if [ -z "$kernel" ]; then