1ede50c355
This simple utility allows writing of values into a device tree from the
command line. It aimes to be the opposite of fdtget.
What is it for:
- Updating fdt values when a binary blob already exists
(even though source may be available it might be easier to use this
utility rather than sed, etc.)
- Writing machine-specific fdt values within a build system
To use it, specify the fdt binary file on command line followed by the node
and property to set. Then, provide a list of values to put into that
property. Often there will be just one, but fdtput also supports arrays and
string lists.
fdtput does not try to guess the type of the property based on looking at
the arguments. Instead it always assumes that an integer is provided. To
indicate that you want to write a string, use -ts. You can also provide
hex values with -tx.
The command line arguments are joined together into a single value. For
strings, a nul terminator is placed between each string when it is packed
into the property. To avoid this, pass the string as a single argument.
Usage:
fdtput <options> <dt file> <<node> <property> [<value>...]
Options:
-t <type> Type of data
-v Verbose: display each value decoded from command line
-h Print this help
<type> s=string, i=int, u=unsigned, x=hex
Optional modifier prefix:
hh or b=byte, h=2 byte, l=4 byte (default)
To read from stdin and write to stdout, use - as the file. So you can do:
cat somefile.dtb | fdtput -ts - /node prop "My string value" > newfile.dtb
This commit also adds basic tests to verify the major features.
Signed-off-by: Simon Glass <sjg@chromium.org>
257 lines
5.4 KiB
Makefile
257 lines
5.4 KiB
Makefile
#
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# Device Tree Compiler
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#
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#
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# Version information will be constructed in this order:
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# EXTRAVERSION might be "-rc", for example.
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# LOCAL_VERSION is likely from command line.
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# CONFIG_LOCALVERSION from some future config system.
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#
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VERSION = 1
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PATCHLEVEL = 3
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SUBLEVEL = 0
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EXTRAVERSION =
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LOCAL_VERSION =
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CONFIG_LOCALVERSION =
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CPPFLAGS = -I libfdt -I .
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WARNINGS = -Werror -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
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-Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls
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CFLAGS = -g -Os -fPIC -Werror $(WARNINGS)
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BISON = bison
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LEX = flex
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INSTALL = /usr/bin/install
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DESTDIR =
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PREFIX = $(HOME)
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BINDIR = $(PREFIX)/bin
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LIBDIR = $(PREFIX)/lib
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INCLUDEDIR = $(PREFIX)/include
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HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
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sed -e 's/\(cygwin\).*/cygwin/')
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ifeq ($(HOSTOS),darwin)
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SHAREDLIB_EXT=dylib
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SHAREDLIB_LINK_OPTIONS=-dynamiclib -Wl,-install_name -Wl,
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else
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SHAREDLIB_EXT=so
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SHAREDLIB_LINK_OPTIONS=-shared -Wl,--version-script=$(LIBFDT_version) -Wl,-soname,
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endif
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#
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# Overall rules
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#
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ifdef V
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VECHO = :
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else
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VECHO = echo " "
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ARFLAGS = rc
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.SILENT:
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endif
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NODEPTARGETS = clean
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ifeq ($(MAKECMDGOALS),)
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DEPTARGETS = all
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else
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DEPTARGETS = $(filter-out $(NODEPTARGETS),$(MAKECMDGOALS))
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endif
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#
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# Rules for versioning
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#
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DTC_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
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VERSION_FILE = version_gen.h
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CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
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else if [ -x /bin/bash ]; then echo /bin/bash; \
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else echo sh; fi ; fi)
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nullstring :=
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space := $(nullstring) # end of line
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localver_config = $(subst $(space),, $(string) \
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$(patsubst "%",%,$(CONFIG_LOCALVERSION)))
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localver_cmd = $(subst $(space),, $(string) \
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$(patsubst "%",%,$(LOCALVERSION)))
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localver_scm = $(shell $(CONFIG_SHELL) ./scripts/setlocalversion)
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localver_full = $(localver_config)$(localver_cmd)$(localver_scm)
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dtc_version = $(DTC_VERSION)$(localver_full)
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# Contents of the generated version file.
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define filechk_version
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(echo "#define DTC_VERSION \"DTC $(dtc_version)\""; )
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endef
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define filechk
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set -e; \
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echo ' CHK $@'; \
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mkdir -p $(dir $@); \
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$(filechk_$(1)) < $< > $@.tmp; \
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if [ -r $@ ] && cmp -s $@ $@.tmp; then \
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rm -f $@.tmp; \
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else \
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echo ' UPD $@'; \
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mv -f $@.tmp $@; \
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fi;
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endef
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include Makefile.convert-dtsv0
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include Makefile.dtc
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include Makefile.utils
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BIN += convert-dtsv0
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BIN += dtc
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BIN += fdtdump
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BIN += fdtget
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BIN += fdtput
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SCRIPTS = dtdiff
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all: $(BIN) libfdt
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ifneq ($(DEPTARGETS),)
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-include $(DTC_OBJS:%.o=%.d)
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-include $(CONVERT_OBJS:%.o=%.d)
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-include $(FDTDUMP_OBJS:%.o=%.d)
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-include $(FDTGET_OBJS:%.o=%.d)
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-include $(FDTPUT_OBJS:%.o=%.d)
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endif
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#
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# Rules for libfdt
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#
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LIBFDT_objdir = libfdt
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LIBFDT_srcdir = libfdt
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LIBFDT_archive = $(LIBFDT_objdir)/libfdt.a
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LIBFDT_lib = $(LIBFDT_objdir)/libfdt-$(DTC_VERSION).$(SHAREDLIB_EXT)
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LIBFDT_include = $(addprefix $(LIBFDT_srcdir)/,$(LIBFDT_INCLUDES))
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LIBFDT_version = $(addprefix $(LIBFDT_srcdir)/,$(LIBFDT_VERSION))
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include $(LIBFDT_srcdir)/Makefile.libfdt
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.PHONY: libfdt
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libfdt: $(LIBFDT_archive) $(LIBFDT_lib)
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$(LIBFDT_archive): $(addprefix $(LIBFDT_objdir)/,$(LIBFDT_OBJS))
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$(LIBFDT_lib): $(addprefix $(LIBFDT_objdir)/,$(LIBFDT_OBJS))
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libfdt_clean:
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@$(VECHO) CLEAN "(libfdt)"
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rm -f $(addprefix $(LIBFDT_objdir)/,$(STD_CLEANFILES))
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rm -f $(LIBFDT_objdir)/*.so
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ifneq ($(DEPTARGETS),)
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-include $(LIBFDT_OBJS:%.o=$(LIBFDT_objdir)/%.d)
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endif
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# This stops make from generating the lex and bison output during
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# auto-dependency computation, but throwing them away as an
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# intermediate target and building them again "for real"
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.SECONDARY: $(DTC_GEN_SRCS) $(CONVERT_GEN_SRCS)
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install: all $(SCRIPTS)
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@$(VECHO) INSTALL
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$(INSTALL) -d $(DESTDIR)$(BINDIR)
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$(INSTALL) $(BIN) $(SCRIPTS) $(DESTDIR)$(BINDIR)
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$(INSTALL) -d $(DESTDIR)$(LIBDIR)
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$(INSTALL) $(LIBFDT_lib) $(DESTDIR)$(LIBDIR)
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ln -sf $(notdir $(LIBFDT_lib)) $(DESTDIR)$(LIBDIR)/$(LIBFDT_soname)
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ln -sf $(LIBFDT_soname) $(DESTDIR)$(LIBDIR)/libfdt.$(SHAREDLIB_EXT)
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$(INSTALL) -m 644 $(LIBFDT_archive) $(DESTDIR)$(LIBDIR)
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$(INSTALL) -d $(DESTDIR)$(INCLUDEDIR)
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$(INSTALL) -m 644 $(LIBFDT_include) $(DESTDIR)$(INCLUDEDIR)
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$(VERSION_FILE): Makefile FORCE
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$(call filechk,version)
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dtc: $(DTC_OBJS)
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convert-dtsv0: $(CONVERT_OBJS)
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@$(VECHO) LD $@
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$(LINK.c) -o $@ $^
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fdtdump: $(FDTDUMP_OBJS)
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fdtget: $(FDTGET_OBJS) $(LIBFDT_archive)
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fdtput: $(FDTPUT_OBJS) $(LIBFDT_archive)
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#
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# Testsuite rules
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#
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TESTS_PREFIX=tests/
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include tests/Makefile.tests
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#
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# Clean rules
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#
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STD_CLEANFILES = *~ *.o *.$(SHAREDLIB_EXT) *.d *.a *.i *.s core a.out vgcore.* \
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*.tab.[ch] *.lex.c *.output
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clean: libfdt_clean tests_clean
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@$(VECHO) CLEAN
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rm -f $(STD_CLEANFILES)
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rm -f $(VERSION_FILE)
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rm -f $(BIN)
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#
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# Generic compile rules
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#
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%: %.o
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@$(VECHO) LD $@
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$(LINK.c) -o $@ $^
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%.o: %.c
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@$(VECHO) CC $@
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$(CC) $(CPPFLAGS) $(CFLAGS) -o $@ -c $<
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%.o: %.S
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@$(VECHO) AS $@
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$(CC) $(CPPFLAGS) $(AFLAGS) -D__ASSEMBLY__ -o $@ -c $<
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%.d: %.c
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@$(VECHO) DEP $<
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$(CC) $(CPPFLAGS) -MM -MG -MT "$*.o $@" $< > $@
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%.d: %.S
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@$(VECHO) DEP $<
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$(CC) $(CPPFLAGS) -MM -MG -MT "$*.o $@" $< > $@
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%.i: %.c
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@$(VECHO) CPP $@
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$(CC) $(CPPFLAGS) -E $< > $@
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%.s: %.c
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@$(VECHO) CC -S $@
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$(CC) $(CPPFLAGS) $(CFLAGS) -o $@ -S $<
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%.a:
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@$(VECHO) AR $@
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$(AR) $(ARFLAGS) $@ $^
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$(LIBFDT_lib):
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@$(VECHO) LD $@
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$(CC) $(LDFLAGS) -fPIC $(SHAREDLIB_LINK_OPTIONS)$(LIBFDT_soname) -o $(LIBFDT_lib) $^
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%.lex.c: %.l
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@$(VECHO) LEX $@
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$(LEX) -o$@ $<
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%.tab.c %.tab.h %.output: %.y
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@$(VECHO) BISON $@
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$(BISON) -d $<
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FORCE:
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