Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <assert.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <getopt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <libfdt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include "util.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) /* These are the operations we support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) enum oper_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	OPER_WRITE_PROP,		/* Write a property in a node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	OPER_CREATE_NODE,		/* Create a new node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) struct display_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	enum oper_type oper;	/* operation to perform */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	int type;		/* data type (s/i/u/x or 0 for default) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	int size;		/* data size (1/2/4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	int verbose;		/* verbose output */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	int auto_path;		/* automatically create all path components */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33)  * Report an error with a particular node.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  * @param name		Node name to report error on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36)  * @param namelen	Length of node name, or -1 to use entire string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37)  * @param err		Error number to report (-FDT_ERR_...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) static void report_error(const char *name, int namelen, int err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	if (namelen == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		namelen = strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	fprintf(stderr, "Error at '%1.*s': %s\n", namelen, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 		fdt_strerror(err));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48)  * Encode a series of arguments in a property value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50)  * @param disp		Display information / options
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51)  * @param arg		List of arguments from command line
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52)  * @param arg_count	Number of arguments (may be 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53)  * @param valuep	Returns buffer containing value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54)  * @param *value_len	Returns length of value encoded
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) static int encode_value(struct display_info *disp, char **arg, int arg_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 			char **valuep, int *value_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	char *value = NULL;	/* holding area for value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	int value_size = 0;	/* size of holding area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	char *ptr;		/* pointer to current value position */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	int len;		/* length of this cell/string/byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	int ival;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	int upto;	/* the number of bytes we have written to buf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	char fmt[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	upto = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	if (disp->verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		fprintf(stderr, "Decoding value:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	fmt[0] = '%';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	fmt[1] = disp->type ? disp->type : 'd';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	fmt[2] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	for (; arg_count > 0; arg++, arg_count--, upto += len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		/* assume integer unless told otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		if (disp->type == 's')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 			len = strlen(*arg) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			len = disp->size == -1 ? 4 : disp->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		/* enlarge our value buffer by a suitable margin if needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		if (upto + len > value_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 			value_size = (upto + len) + 500;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 			value = realloc(value, value_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			if (!value) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 				fprintf(stderr, "Out of mmory: cannot alloc "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 					"%d bytes\n", value_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 				return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		ptr = value + upto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		if (disp->type == 's') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 			memcpy(ptr, *arg, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			if (disp->verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 				fprintf(stderr, "\tstring: '%s'\n", ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 			int *iptr = (int *)ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 			sscanf(*arg, fmt, &ival);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 			if (len == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 				*iptr = cpu_to_fdt32(ival);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 			else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 				*ptr = (uint8_t)ival;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			if (disp->verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 				fprintf(stderr, "\t%s: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 					disp->size == 1 ? "byte" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 					disp->size == 2 ? "short" : "int",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 					ival);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	*value_len = upto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	*valuep = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	if (disp->verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		fprintf(stderr, "Value size %d\n", upto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static int store_key_value(void *blob, const char *node_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		const char *property, const char *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	int node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	node = fdt_path_offset(blob, node_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (node < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		report_error(node_name, -1, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	err = fdt_setprop(blob, node, property, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		report_error(property, -1, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)  * Create paths as needed for all components of a path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)  * Any components of the path that do not exist are created. Errors are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)  * reported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)  * @param blob		FDT blob to write into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)  * @param in_path	Path to process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)  * @return 0 if ok, -1 on error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int create_paths(void *blob, const char *in_path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	const char *path = in_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	const char *sep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	int node, offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	/* skip leading '/' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	while (*path == '/')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		path++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	for (sep = path; *sep; path = sep + 1, offset = node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		/* equivalent to strchrnul(), but it requires _GNU_SOURCE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		sep = strchr(path, '/');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		if (!sep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 			sep = path + strlen(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		node = fdt_subnode_offset_namelen(blob, offset, path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 				sep - path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		if (node == -FDT_ERR_NOTFOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 			node = fdt_add_subnode_namelen(blob, offset, path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 						       sep - path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		if (node < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			report_error(path, sep - path, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)  * Create a new node in the fdt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)  * This will overwrite the node_name string. Any error is reported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)  * TODO: Perhaps create fdt_path_offset_namelen() so we don't need to do this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)  * @param blob		FDT blob to write into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)  * @param node_name	Name of node to create
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)  * @return new node offset if found, or -1 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) static int create_node(void *blob, const char *node_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	int node = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	p = strrchr(node_name, '/');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	if (!p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		report_error(node_name, -1, -FDT_ERR_BADPATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	*p = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	if (p > node_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		node = fdt_path_offset(blob, node_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		if (node < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 			report_error(node_name, -1, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	node = fdt_add_subnode(blob, node, p + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	if (node < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		report_error(p + 1, -1, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static int do_fdtput(struct display_info *disp, const char *filename,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		    char **arg, int arg_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	char *value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	char *blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	int len, ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	blob = utilfdt_read(filename);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	if (!blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	switch (disp->oper) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	case OPER_WRITE_PROP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		 * Convert the arguments into a single binary value, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		 * store them into the property.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		assert(arg_count >= 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		if (disp->auto_path && create_paths(blob, *arg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 			return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		if (encode_value(disp, arg + 2, arg_count - 2, &value, &len) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 			store_key_value(blob, *arg, arg[1], value, len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	case OPER_CREATE_NODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		for (; ret >= 0 && arg_count--; arg++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			if (disp->auto_path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 				ret = create_paths(blob, *arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 			else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 				ret = create_node(blob, *arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	if (ret >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		ret = utilfdt_write(filename, blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	free(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static const char *usage_msg =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	"fdtput - write a property value to a device tree\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	"\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	"The command line arguments are joined together into a single value.\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	"\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	"Usage:\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	"	fdtput <options> <dt file> <node> <property> [<value>...]\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	"	fdtput -c <options> <dt file> [<node>...]\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	"Options:\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	"\t-c\t\tCreate nodes if they don't already exist\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	"\t-p\t\tAutomatically create nodes as needed for the node path\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	"\t-t <type>\tType of data\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	"\t-v\t\tVerbose: display each value decoded from command line\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	"\t-h\t\tPrint this help\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	USAGE_TYPE_MSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static void usage(const char *msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	if (msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 		fprintf(stderr, "Error: %s\n\n", msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	fprintf(stderr, "%s", usage_msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	exit(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) int main(int argc, char *argv[])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	struct display_info disp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	char *filename = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	memset(&disp, '\0', sizeof(disp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	disp.size = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	disp.oper = OPER_WRITE_PROP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		int c = getopt(argc, argv, "chpt:v");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		if (c == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		 * TODO: add options to:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		 * - delete property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		 * - delete node (optionally recursively)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		 * - rename node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		 * - pack fdt before writing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		 * - set amount of free space when writing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 		 * - expand fdt if value doesn't fit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		switch (c) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		case 'c':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 			disp.oper = OPER_CREATE_NODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 		case 'h':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		case '?':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 			usage(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		case 'p':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 			disp.auto_path = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		case 't':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 			if (utilfdt_decode_type(optarg, &disp.type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 					&disp.size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 				usage("Invalid type string");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		case 'v':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 			disp.verbose = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	if (optind < argc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		filename = argv[optind++];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	if (!filename)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		usage("Missing filename");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	argv += optind;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	argc -= optind;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	if (disp.oper == OPER_WRITE_PROP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		if (argc < 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 			usage("Missing node");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		if (argc < 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 			usage("Missing property");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	if (do_fdtput(&disp, filename, argv, argc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }