diff --git a/doc/DocBook/.gitignore b/doc/DocBook/.gitignore
new file mode 100644
index 0000000..90c1b11
--- /dev/null
+++ b/doc/DocBook/.gitignore
@@ -0,0 +1,15 @@
+*/
+*.xml
+*.ps
+*.pdf
+*.html
+*.9.gz
+*.9
+*.aux
+*.dvi
+*.log
+*.out
+*.png
+*.gif
+media-indices.tmpl
+media-entities.tmpl
diff --git a/doc/DocBook/Makefile b/doc/DocBook/Makefile
new file mode 100644
index 0000000..2f2ddfc
--- /dev/null
+++ b/doc/DocBook/Makefile
@@ -0,0 +1,229 @@
+###
+# This makefile is used to generate the kernel documentation,
+# primarily based on in-line comments in various source files.
+# See doc/kernel-doc-nano-HOWTO.txt for instruction in how
+# to document the SRC - and how to read it.
+# To add a new book the only step required is to add the book to the
+# list of DOCBOOKS.
+
+include $(TOPDIR)/config.mk
+
+DOCBOOKS :=
+
+###
+# The build process is as follows (targets):
+#              (xmldocs) [by docproc]
+# file.tmpl --> file.xml +--> file.ps   (psdocs)   [by db2ps or xmlto]
+#                        +--> file.pdf  (pdfdocs)  [by db2pdf or xmlto]
+#                        +--> DIR=file  (htmldocs) [by xmlto]
+#                        +--> man/      (mandocs)  [by xmlto]
+
+
+# for PDF and PS output you can choose between xmlto and docbook-utils tools
+PDF_METHOD	= $(prefer-db2x)
+PS_METHOD	= $(prefer-db2x)
+
+
+###
+# The targets that may be used.
+PHONY += $(obj).depend xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs
+
+BOOKS := $(addprefix $(OBJTREE)/doc/DocBook/,$(DOCBOOKS))
+xmldocs: $(BOOKS)
+sgmldocs: xmldocs
+
+PS := $(patsubst %.xml, %.ps, $(BOOKS))
+psdocs: $(PS)
+
+PDF := $(patsubst %.xml, %.pdf, $(BOOKS))
+pdfdocs: $(PDF)
+
+HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))
+htmldocs: $(HTML)
+	$(call build_main_index)
+	$(call build_images)
+	$(call install_media_images)
+
+MAN := $(patsubst %.xml, %.9, $(BOOKS))
+mandocs: $(MAN)
+
+installmandocs: mandocs
+	mkdir -p /usr/local/man/man9/
+	install doc/DocBook/man/*.9.gz /usr/local/man/man9/
+
+###
+#External programs used
+KERNELDOC = $(SRCTREE)/tools/kernel-doc/kernel-doc
+DOCPROC   = $(OBJTREE)/tools/kernel-doc/docproc
+
+XMLTOFLAGS = -m $(SRCTREE)/doc/DocBook/stylesheet.xsl
+XMLTOFLAGS += --skip-validation
+
+###
+# DOCPROC is used for two purposes:
+# 1) To generate a dependency list for a .tmpl file
+# 2) To preprocess a .tmpl file and call kernel-doc with
+#     appropriate parameters.
+# The following rules are used to generate the .xml documentation
+# required to generate the final targets. (ps, pdf, html).
+%.xml: %.tmpl
+	$(DOCPROC) doc $< >$@
+
+ifeq ($@, "cleandocs")
+sinclude $(obj).depend
+$(obj).depend: $(patsubst %.xml, %.tmpl, $(DOCBOOKS))
+	rm -f $(obj).depend ;					\
+	touch $(obj).depend ;					\
+	for file in $^ ; do					\
+		xmlfile=`echo "$${file}" |			\
+			sed "s/tmpl$$/xml/"` ;			\
+		echo -n "$${xmlfile}: ">> $(obj).depend ;	\
+		$(DOCPROC) depend $$file >> $(obj).depend ;	\
+		echo -e "\n\t$(DOCPROC) doc $< >$${xmlfile} " >>	\
+			$(obj).depend ;				\
+	done
+endif
+
+###
+# Changes in kernel-doc force a rebuild of all documentation
+$(BOOKS): $(KERNELDOC)
+
+notfoundtemplate = echo "*** You have to install docbook-utils or xmlto ***"; \
+		   exit 1
+db2xtemplate = db2TYPE -o $(dir $@) $<
+xmltotemplate = xmlto TYPE $(XMLTOFLAGS) -o $(dir $@) $<
+
+# determine which methods are available
+ifeq ($(shell which db2ps >/dev/null 2>&1 && echo found),found)
+	use-db2x = db2x
+	prefer-db2x = db2x
+else
+	use-db2x = notfound
+	prefer-db2x = $(use-xmlto)
+endif
+ifeq ($(shell which xmlto >/dev/null 2>&1 && echo found),found)
+	use-xmlto = xmlto
+	prefer-xmlto = xmlto
+else
+	use-xmlto = notfound
+	prefer-xmlto = $(use-db2x)
+endif
+
+# the commands, generated from the chosen template
+quiet_cmd_db2ps = PS      $@
+      cmd_db2ps = $(subst TYPE,ps, $($(PS_METHOD)template))
+%.ps : %.xml
+	$(call cmd_db2ps)
+
+quiet_cmd_db2pdf = PDF     $@
+      cmd_db2pdf = $(subst TYPE,pdf, $($(PDF_METHOD)template))
+%.pdf : %.xml
+	$(call cmd_db2pdf)
+
+
+index = index.html
+main_idx = $(index)
+build_main_index = rm -rf $(main_idx); \
+		   echo '<h1>U-Boot Bootloader HTML Documentation</h1>' >> $(main_idx) && \
+		   echo '<h2>U-Boot Version: $(U_BOOT_VERSION)</h2>' >> $(main_idx) && \
+		   cat $(HTML) >> $(main_idx)
+
+# To work around bug [1] in docbook-xsl-stylesheets 1.76.1 , generate only html
+# docs instead of xhtml with xmlto.
+# [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=654338
+quiet_cmd_db2html = HTML    $@
+      cmd_db2html = xmlto html $(XMLTOFLAGS) -o $(patsubst %.html,%,$@) $< && \
+		echo '<a HREF="$(patsubst %.html,%,$(notdir $@))/index.html"> \
+        $(patsubst %.html,%,$(notdir $@))</a><p>' > $@
+
+%.html:	%.xml
+	@(which xmlto > /dev/null 2>&1) || \
+	 (echo "*** You need to install xmlto ***"; \
+	  exit 1)
+	@rm -rf $@ $(patsubst %.html,%,$@)
+	$(call cmd_db2html)
+	@if [ ! -z "$(PNG-$(basename $(notdir $@)))" ]; then \
+            cp $(PNG-$(basename $(notdir $@))) $(patsubst %.html,%,$@); fi
+
+quiet_cmd_db2man = MAN     $@
+      cmd_db2man = if grep -q refentry $<; then xmlto man $(XMLTOFLAGS) -o $(obj)/man $< ; gzip -f $(obj)/man/*.9; fi
+%.9 : %.xml
+	@(which xmlto > /dev/null 2>&1) || \
+	 (echo "*** You need to install xmlto ***"; \
+	  exit 1)
+	$(Q)mkdir -p $(obj)man
+	$(call cmd_db2man)
+	@touch $@
+
+###
+# Rules to generate postscripts and PNG images from .fig format files
+quiet_cmd_fig2eps = FIG2EPS $@
+      cmd_fig2eps = fig2dev -Leps $< $@
+
+%.eps: %.fig
+	@(which fig2dev > /dev/null 2>&1) || \
+	 (echo "*** You need to install transfig ***"; \
+	  exit 1)
+	$(call cmd_fig2eps)
+
+quiet_cmd_fig2png = FIG2PNG $@
+      cmd_fig2png = fig2dev -Lpng $< $@
+
+%.png: %.fig
+	@(which fig2dev > /dev/null 2>&1) || \
+	 (echo "*** You need to install transfig ***"; \
+	  exit 1)
+	$(call cmd_fig2png)
+
+###
+# Rule to convert a .c file to inline XML documentation
+       gen_xml = :
+ quiet_gen_xml = echo '  GEN     $@'
+silent_gen_xml = :
+%.xml: %.c
+	@$($(quiet)gen_xml)
+	@(                            \
+	   echo "<programlisting>";   \
+	   expand --tabs=8 < $< |     \
+	   sed -e "s/&/\\&amp;/g"     \
+	       -e "s/</\\&lt;/g"      \
+	       -e "s/>/\\&gt;/g";     \
+	   echo "</programlisting>")  > $@
+
+###
+# Help targets as used by the top-level makefile
+dochelp:
+	@echo  ' U-Boot bootloader internal documentation in different formats:'
+	@echo  '  htmldocs        - HTML'
+	@echo  '  pdfdocs         - PDF'
+	@echo  '  psdocs          - Postscript'
+	@echo  '  xmldocs         - XML DocBook'
+	@echo  '  mandocs         - man pages'
+	@echo  '  installmandocs  - install man pages generated by mandocs'
+	@echo  '  cleandocs       - clean all generated DocBook files'
+
+###
+# Temporary files left by various tools
+clean-files := $(DOCBOOKS) \
+	$(patsubst %.xml, %.dvi,  $(DOCBOOKS)) \
+	$(patsubst %.xml, %.aux,  $(DOCBOOKS)) \
+	$(patsubst %.xml, %.tex,  $(DOCBOOKS)) \
+	$(patsubst %.xml, %.log,  $(DOCBOOKS)) \
+	$(patsubst %.xml, %.out,  $(DOCBOOKS)) \
+	$(patsubst %.xml, %.ps,   $(DOCBOOKS)) \
+	$(patsubst %.xml, %.pdf,  $(DOCBOOKS)) \
+	$(patsubst %.xml, %.html, $(DOCBOOKS)) \
+	$(patsubst %.xml, %.9,    $(DOCBOOKS)) \
+	$(index)
+
+clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man
+
+cleandocs:
+	@rm -f $(obj).depend
+	@$(Q)rm -f $(call objectify, $(clean-files))
+	@$(Q)rm -rf $(call objectify, $(clean-dirs))
+
+# Declare the contents of the .PHONY variable as phony.  We keep that
+# information in a variable se we can use it in if_changed and friends.
+
+.PHONY: $(PHONY)
diff --git a/doc/DocBook/stylesheet.xsl b/doc/DocBook/stylesheet.xsl
new file mode 100644
index 0000000..85b2527
--- /dev/null
+++ b/doc/DocBook/stylesheet.xsl
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<stylesheet xmlns="http://www.w3.org/1999/XSL/Transform" version="1.0">
+<param name="chunk.quietly">1</param>
+<param name="funcsynopsis.style">ansi</param>
+<param name="funcsynopsis.tabular.threshold">80</param>
+<param name="callout.graphics">0</param>
+<!-- <param name="paper.type">A4</param> -->
+<param name="generate.section.toc.level">2</param>
+<param name="use.id.as.filename">1</param>
+</stylesheet>