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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/scripts/dtc/dtc.c
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@@ -1,21 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
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- *
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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 the
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- * 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 GNU
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- *  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, MA  02111-1307
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- *                                                                   USA
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  */
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 #include <sys/stat.h>
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@@ -35,6 +20,8 @@
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 int generate_symbols;	/* enable symbols & fixup support */
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 int generate_fixups;		/* suppress generation of fixups on symbol support */
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 int auto_label_aliases;		/* auto generate labels -> aliases */
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+int annotate;		/* Level of annotation: 1 for input source location
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+			   >1 for full input source location. */
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 static int is_power_of_2(int x)
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 {
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@@ -60,7 +47,7 @@
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 /* Usage related data. */
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 static const char usage_synopsis[] = "dtc [options] <input file>";
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-static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
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+static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@AThv";
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 static struct option const usage_long_opts[] = {
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 	{"quiet",            no_argument, NULL, 'q'},
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 	{"in-format",         a_argument, NULL, 'I'},
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@@ -81,6 +68,7 @@
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 	{"error",             a_argument, NULL, 'E'},
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 	{"symbols",	     no_argument, NULL, '@'},
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 	{"auto-alias",       no_argument, NULL, 'A'},
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+	{"annotate",         no_argument, NULL, 'T'},
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 	{"help",             no_argument, NULL, 'h'},
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 	{"version",          no_argument, NULL, 'v'},
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 	{NULL,               no_argument, NULL, 0x0},
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@@ -95,6 +83,9 @@
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 	"\n\tOutput formats are:\n"
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 	 "\t\tdts - device tree source text\n"
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 	 "\t\tdtb - device tree blob\n"
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+#ifndef NO_YAML
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+	 "\t\tyaml - device tree encoded as YAML\n"
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+#endif
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 	 "\t\tasm - assembler source",
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 	"\n\tBlob version to produce, defaults to "stringify(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
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 	"\n\tOutput dependency file",
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@@ -114,6 +105,7 @@
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 	"\n\tEnable/disable errors (prefix with \"no-\")",
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 	"\n\tEnable generation of symbols",
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 	"\n\tEnable auto-alias of labels",
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+	"\n\tAnnotate output .dts with input source file and line (-T -T for more details)",
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 	"\n\tPrint this help and exit",
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 	"\n\tPrint version and exit",
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 	NULL,
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@@ -128,6 +120,8 @@
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 		return fallback;
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 	if (!strcasecmp(s, ".dts"))
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 		return "dts";
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+	if (!strcasecmp(s, ".yaml"))
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+		return "yaml";
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 	if (!strcasecmp(s, ".dtb"))
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 		return "dtb";
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 	return fallback;
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@@ -259,6 +253,9 @@
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 		case 'A':
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 			auto_label_aliases = 1;
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 			break;
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+		case 'T':
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+			annotate++;
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+			break;
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 		case 'h':
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 			usage(NULL);
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@@ -297,6 +294,8 @@
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 				outform = "dts";
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 		}
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 	}
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+	if (annotate && (!streq(inform, "dts") || !streq(outform, "dts")))
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+		die("--annotate requires -I dts -O dts\n");
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 	if (streq(inform, "dts"))
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 		dti = dt_from_source(arg);
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 	else if (streq(inform, "fs"))
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@@ -350,6 +349,12 @@
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 	if (streq(outform, "dts")) {
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 		dt_to_source(outf, dti);
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+#ifndef NO_YAML
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+	} else if (streq(outform, "yaml")) {
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+		if (!streq(inform, "dts"))
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+			die("YAML output format requires dts input format\n");
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+		dt_to_yaml(outf, dti);
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+#endif
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 	} else if (streq(outform, "dtb")) {
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 		dt_to_blob(outf, dti, outversion);
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 	} else if (streq(outform, "asm")) {