Add fdtput utility to write property values to a device tree
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>
13 years ago
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/*
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* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libfdt.h>
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#include "util.h"
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/* These are the operations we support */
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enum oper_type {
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OPER_WRITE_PROP, /* Write a property in a node */
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OPER_CREATE_NODE, /* Create a new node */
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};
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Add fdtput utility to write property values to a device tree
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>
13 years ago
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struct display_info {
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enum oper_type oper; /* operation to perform */
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Add fdtput utility to write property values to a device tree
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>
13 years ago
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int type; /* data type (s/i/u/x or 0 for default) */
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int size; /* data size (1/2/4) */
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int verbose; /* verbose output */
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int auto_path; /* automatically create all path components */
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Add fdtput utility to write property values to a device tree
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>
13 years ago
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};
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/**
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* Report an error with a particular node.
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*
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* @param name Node name to report error on
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* @param namelen Length of node name, or -1 to use entire string
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* @param err Error number to report (-FDT_ERR_...)
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*/
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static void report_error(const char *name, int namelen, int err)
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Add fdtput utility to write property values to a device tree
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>
13 years ago
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{
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if (namelen == -1)
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namelen = strlen(name);
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fprintf(stderr, "Error at '%1.*s': %s\n", namelen, name,
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fdt_strerror(err));
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Add fdtput utility to write property values to a device tree
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>
13 years ago
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}
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/**
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* Encode a series of arguments in a property value.
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*
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* @param disp Display information / options
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* @param arg List of arguments from command line
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* @param arg_count Number of arguments (may be 0)
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* @param valuep Returns buffer containing value
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* @param *value_len Returns length of value encoded
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*/
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static int encode_value(struct display_info *disp, char **arg, int arg_count,
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char **valuep, int *value_len)
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{
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char *value = NULL; /* holding area for value */
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int value_size = 0; /* size of holding area */
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char *ptr; /* pointer to current value position */
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int len; /* length of this cell/string/byte */
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int ival;
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int upto; /* the number of bytes we have written to buf */
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char fmt[3];
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upto = 0;
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if (disp->verbose)
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fprintf(stderr, "Decoding value:\n");
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fmt[0] = '%';
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fmt[1] = disp->type ? disp->type : 'd';
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fmt[2] = '\0';
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for (; arg_count > 0; arg++, arg_count--, upto += len) {
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/* assume integer unless told otherwise */
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if (disp->type == 's')
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len = strlen(*arg) + 1;
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else
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len = disp->size == -1 ? 4 : disp->size;
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/* enlarge our value buffer by a suitable margin if needed */
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if (upto + len > value_size) {
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value_size = (upto + len) + 500;
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value = realloc(value, value_size);
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if (!value) {
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fprintf(stderr, "Out of mmory: cannot alloc "
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"%d bytes\n", value_size);
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return -1;
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}
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}
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ptr = value + upto;
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if (disp->type == 's') {
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memcpy(ptr, *arg, len);
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if (disp->verbose)
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fprintf(stderr, "\tstring: '%s'\n", ptr);
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} else {
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int *iptr = (int *)ptr;
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sscanf(*arg, fmt, &ival);
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if (len == 4)
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*iptr = cpu_to_fdt32(ival);
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else
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*ptr = (uint8_t)ival;
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if (disp->verbose) {
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fprintf(stderr, "\t%s: %d\n",
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disp->size == 1 ? "byte" :
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disp->size == 2 ? "short" : "int",
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ival);
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}
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}
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}
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*value_len = upto;
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*valuep = value;
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if (disp->verbose)
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fprintf(stderr, "Value size %d\n", upto);
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return 0;
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}
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static int store_key_value(void *blob, const char *node_name,
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const char *property, const char *buf, int len)
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{
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int node;
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int err;
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node = fdt_path_offset(blob, node_name);
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if (node < 0) {
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report_error(node_name, -1, node);
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Add fdtput utility to write property values to a device tree
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>
13 years ago
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return -1;
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}
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err = fdt_setprop(blob, node, property, buf, len);
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if (err) {
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report_error(property, -1, err);
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Add fdtput utility to write property values to a device tree
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>
13 years ago
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return -1;
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}
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return 0;
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}
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/**
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* Create paths as needed for all components of a path
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*
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* Any components of the path that do not exist are created. Errors are
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* reported.
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*
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* @param blob FDT blob to write into
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* @param in_path Path to process
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* @return 0 if ok, -1 on error
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*/
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static int create_paths(void *blob, const char *in_path)
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{
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const char *path = in_path;
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const char *sep;
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int node, offset = 0;
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/* skip leading '/' */
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while (*path == '/')
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path++;
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for (sep = path; *sep; path = sep + 1, offset = node) {
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/* equivalent to strchrnul(), but it requires _GNU_SOURCE */
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sep = strchr(path, '/');
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if (!sep)
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sep = path + strlen(path);
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|
|
node = fdt_subnode_offset_namelen(blob, offset, path,
|
|
|
|
|
sep - path);
|
|
|
|
|
if (node == -FDT_ERR_NOTFOUND) {
|
|
|
|
|
node = fdt_add_subnode_namelen(blob, offset, path,
|
|
|
|
|
sep - path);
|
|
|
|
|
}
|
|
|
|
|
if (node < 0) {
|
|
|
|
|
report_error(path, sep - path, node);
|
|
|
|
|
return -1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Create a new node in the fdt.
|
|
|
|
|
*
|
|
|
|
|
* This will overwrite the node_name string. Any error is reported.
|
|
|
|
|
*
|
|
|
|
|
* TODO: Perhaps create fdt_path_offset_namelen() so we don't need to do this.
|
|
|
|
|
*
|
|
|
|
|
* @param blob FDT blob to write into
|
|
|
|
|
* @param node_name Name of node to create
|
|
|
|
|
* @return new node offset if found, or -1 on failure
|
|
|
|
|
*/
|
|
|
|
|
static int create_node(void *blob, const char *node_name)
|
|
|
|
|
{
|
|
|
|
|
int node = 0;
|
|
|
|
|
char *p;
|
|
|
|
|
|
|
|
|
|
p = strrchr(node_name, '/');
|
|
|
|
|
if (!p) {
|
|
|
|
|
report_error(node_name, -1, -FDT_ERR_BADPATH);
|
|
|
|
|
return -1;
|
|
|
|
|
}
|
|
|
|
|
*p = '\0';
|
|
|
|
|
|
|
|
|
|
if (p > node_name) {
|
|
|
|
|
node = fdt_path_offset(blob, node_name);
|
|
|
|
|
if (node < 0) {
|
|
|
|
|
report_error(node_name, -1, node);
|
|
|
|
|
return -1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
node = fdt_add_subnode(blob, node, p + 1);
|
|
|
|
|
if (node < 0) {
|
|
|
|
|
report_error(p + 1, -1, node);
|
|
|
|
|
return -1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
static int do_fdtput(struct display_info *disp, const char *filename,
|
|
|
|
|
char **arg, int arg_count)
|
|
|
|
|
{
|
|
|
|
|
char *value;
|
|
|
|
|
char *blob;
|
|
|
|
|
int len, ret = 0;
|
|
|
|
|
|
|
|
|
|
blob = utilfdt_read(filename);
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
if (!blob)
|
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
|
|
switch (disp->oper) {
|
|
|
|
|
case OPER_WRITE_PROP:
|
|
|
|
|
/*
|
|
|
|
|
* Convert the arguments into a single binary value, then
|
|
|
|
|
* store them into the property.
|
|
|
|
|
*/
|
|
|
|
|
assert(arg_count >= 2);
|
|
|
|
|
if (disp->auto_path && create_paths(blob, *arg))
|
|
|
|
|
return -1;
|
|
|
|
|
if (encode_value(disp, arg + 2, arg_count - 2, &value, &len) ||
|
|
|
|
|
store_key_value(blob, *arg, arg[1], value, len))
|
|
|
|
|
ret = -1;
|
|
|
|
|
break;
|
|
|
|
|
case OPER_CREATE_NODE:
|
|
|
|
|
for (; ret >= 0 && arg_count--; arg++) {
|
|
|
|
|
if (disp->auto_path)
|
|
|
|
|
ret = create_paths(blob, *arg);
|
|
|
|
|
else
|
|
|
|
|
ret = create_node(blob, *arg);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (ret >= 0)
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
ret = utilfdt_write(filename, blob);
|
|
|
|
|
|
|
|
|
|
free(blob);
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static const char *usage_msg =
|
|
|
|
|
"fdtput - write a property value to a device tree\n"
|
|
|
|
|
"\n"
|
|
|
|
|
"The command line arguments are joined together into a single value.\n"
|
|
|
|
|
"\n"
|
|
|
|
|
"Usage:\n"
|
|
|
|
|
" fdtput <options> <dt file> <node> <property> [<value>...]\n"
|
|
|
|
|
" fdtput -c <options> <dt file> [<node>...]\n"
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
"Options:\n"
|
|
|
|
|
"\t-c\t\tCreate nodes if they don't already exist\n"
|
|
|
|
|
"\t-p\t\tAutomatically create nodes as needed for the node path\n"
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
"\t-t <type>\tType of data\n"
|
|
|
|
|
"\t-v\t\tVerbose: display each value decoded from command line\n"
|
|
|
|
|
"\t-h\t\tPrint this help\n\n"
|
|
|
|
|
USAGE_TYPE_MSG;
|
|
|
|
|
|
|
|
|
|
static void usage(const char *msg)
|
|
|
|
|
{
|
|
|
|
|
if (msg)
|
|
|
|
|
fprintf(stderr, "Error: %s\n\n", msg);
|
|
|
|
|
|
|
|
|
|
fprintf(stderr, "%s", usage_msg);
|
|
|
|
|
exit(2);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int main(int argc, char *argv[])
|
|
|
|
|
{
|
|
|
|
|
struct display_info disp;
|
|
|
|
|
char *filename = NULL;
|
|
|
|
|
|
|
|
|
|
memset(&disp, '\0', sizeof(disp));
|
|
|
|
|
disp.size = -1;
|
|
|
|
|
disp.oper = OPER_WRITE_PROP;
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
for (;;) {
|
|
|
|
|
int c = getopt(argc, argv, "chpt:v");
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
if (c == -1)
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* TODO: add options to:
|
|
|
|
|
* - delete property
|
|
|
|
|
* - delete node (optionally recursively)
|
|
|
|
|
* - rename node
|
|
|
|
|
* - pack fdt before writing
|
|
|
|
|
* - set amount of free space when writing
|
|
|
|
|
* - expand fdt if value doesn't fit
|
|
|
|
|
*/
|
|
|
|
|
switch (c) {
|
|
|
|
|
case 'c':
|
|
|
|
|
disp.oper = OPER_CREATE_NODE;
|
|
|
|
|
break;
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
case 'h':
|
|
|
|
|
case '?':
|
|
|
|
|
usage(NULL);
|
|
|
|
|
case 'p':
|
|
|
|
|
disp.auto_path = 1;
|
|
|
|
|
break;
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
case 't':
|
|
|
|
|
if (utilfdt_decode_type(optarg, &disp.type,
|
|
|
|
|
&disp.size))
|
|
|
|
|
usage("Invalid type string");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 'v':
|
|
|
|
|
disp.verbose = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (optind < argc)
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|
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filename = argv[optind++];
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if (!filename)
|
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|
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usage("Missing filename");
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argv += optind;
|
|
|
|
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argc -= optind;
|
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|
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|
|
if (disp.oper == OPER_WRITE_PROP) {
|
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|
|
if (argc < 1)
|
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|
|
usage("Missing node");
|
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|
|
if (argc < 2)
|
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|
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usage("Missing property");
|
|
|
|
|
}
|
Add fdtput utility to write property values to a device tree
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>
13 years ago
|
|
|
|
|
|
|
|
if (do_fdtput(&disp, filename, argv, argc))
|
|
|
|
|
return 1;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
