Implement boot device r/w functions for vboot

config.mk

 #
 # (C) Copyright 2000-2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # See file CREDITS for list of people who contributed to this
 # project.
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
 # published by the Free Software Foundation; either version 2 of
@@ skipping 121 matching lines @@
 CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
 endif
 
 ifneq ($(OBJTREE),$(SRCTREE))
 CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
 endif
 
 ifdef VBOOT
 CPPFLAGS += -I$(VBOOT)/include/vboot
 endif
+ifdef VBOOT_DEBUG
+CPPFLAGS += -DVBOOT_DEBUG
+endif
 
 CPPFLAGS += -I$(TOPDIR)/include
 CPPFLAGS += -fno-builtin -ffreestanding -nostdinc       \
         -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
 
 ifdef BUILD_TAG
 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
         -DBUILD_TAG='"$(BUILD_TAG)"'
 else
 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
@@ skipping 65 matching lines @@
 $(obj)%.o:      %.S
         $(CC)  $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< -c
 $(obj)%.o:      %.c
         $(CC)  $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
 $(obj)%.i:      %.c
         $(CPP) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
 $(obj)%.s:      %.c
         $(CC)  $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c -S
 
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