--- /dev/null
+###
+# This makefile is used to generate the kernel documentation,
+# primarily based on in-line comments in various source files.
+# See Documentation/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.
+
+DOCBOOKS := linker_lists.xml stdio.xml
+
+###
+# 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 += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs
+
+targets += $(DOCBOOKS)
+BOOKS := $(addprefix $(obj)/,$(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)
+ $(if $(wildcard $(obj)/man/*.9),gzip -f $(obj)/man/*.9)
+
+installmandocs: mandocs
+ mkdir -p /usr/local/man/man9/
+ install $(obj)/man/*.9.gz /usr/local/man/man9/
+
+###
+#External programs used
+KERNELDOC = $(srctree)/scripts/kernel-doc
+DOCPROC = $(objtree)/scripts/docproc
+
+XMLTOFLAGS = -m $(srctree)/$(src)/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).
+quiet_cmd_docproc = DOCPROC $@
+ cmd_docproc = SRCTREE=$(srctree)/ $(DOCPROC) doc $< >$@
+define rule_docproc
+ set -e; \
+ $(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
+ $(cmd_$(1)); \
+ ( \
+ echo 'cmd_$@ := $(cmd_$(1))'; \
+ echo $@: `SRCTREE=$(srctree) $(DOCPROC) depend $<`; \
+ ) > $(dir $@).$(notdir $@).cmd
+endef
+
+%.xml: %.tmpl $(KERNELDOC) $(DOCPROC) FORCE
+ $(call if_changed_rule,docproc)
+
+# Tell kbuild to always build the programs
+always := $(hostprogs-y)
+
+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 = $(obj)/$(index)
+build_main_index = rm -rf $(main_idx); \
+ echo '<h1>U-Boot Bootloader HTML Documentation</h1>' >> $(main_idx) && \
+ echo '<h2>U-Boot Version: $(UBOOTVERSION)</h2>' >> $(main_idx) && \
+ cat $(HTML) >> $(main_idx)
+
+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 $< ; 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/&/\\&/g" \
+ -e "s/</\\</g" \
+ -e "s/>/\\>/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:
+ $(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)
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