1 files changed, 147 insertions, 0 deletions
diff --git a/roms/u-boot/tools/env/fw_env_main.c b/roms/u-boot/tools/env/fw_env_main.c
new file mode 100644
index 00000000..ce50d58b
--- /dev/null
+++ b/roms/u-boot/tools/env/fw_env_main.c
@@ -0,0 +1,147 @@
+/*
+ * (C) Copyright 2000-2008
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Command line user interface to firmware (=U-Boot) environment.
+ *
+ * Implements:
+ *	fw_printenv [ -a key ] [[ -n name ] | [ name ... ]]
+ *              - prints the value of a single environment variable
+ *                "name", the ``name=value'' pairs of one or more
+ *                environment variables "name", or the whole
+ *                environment if no names are specified.
+ *	fw_setenv [ -a key ] name [ value ... ]
+ *		- If a name without any values is given, the variable
+ *		  with this name is deleted from the environment;
+ *		  otherwise, all "value" arguments are concatenated,
+ *		  separated by single blank characters, and the
+ *		  resulting string is assigned to the environment
+ *		  variable "name"
+ *
+ * If '-a key' is specified, the env block is encrypted with AES 128 CBC.
+ * The 'key' argument is in the format of 32 hexadecimal numbers (16 bytes
+ * of AES key), eg. '-a aabbccddeeff00112233445566778899'.
+ */
+
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/file.h>
+#include <unistd.h>
+#include "fw_env.h"
+
+#define	CMD_PRINTENV	"fw_printenv"
+#define CMD_SETENV	"fw_setenv"
+
+static struct option long_options[] = {
+	{"script", required_argument, NULL, 's'},
+	{"help", no_argument, NULL, 'h'},
+	{NULL, 0, NULL, 0}
+};
+
+void usage(void)
+{
+
+	fprintf(stderr, "fw_printenv/fw_setenv, "
+		"a command line interface to U-Boot environment\n\n"
+		"usage:\tfw_printenv [-a key] [-n] [variable name]\n"
+		"\tfw_setenv [-a key] [variable name] [variable value]\n"
+		"\tfw_setenv -s [ file ]\n"
+		"\tfw_setenv -s - < [ file ]\n\n"
+		"The file passed as argument contains only pairs "
+		"name / value\n"
+		"Example:\n"
+		"# Any line starting with # is treated as comment\n"
+		"\n"
+		"\t      netdev         eth0\n"
+		"\t      kernel_addr    400000\n"
+		"\t      var1\n"
+		"\t      var2          The quick brown fox jumps over the "
+		"lazy dog\n"
+		"\n"
+		"A variable without value will be dropped. It is possible\n"
+		"to put any number of spaces between the fields, but any\n"
+		"space inside the value is treated as part of the value "
+		"itself.\n\n"
+	);
+}
+
+int main(int argc, char *argv[])
+{
+	char *p;
+	char *cmdname = *argv;
+	char *script_file = NULL;
+	int c;
+	const char *lockname = "/var/lock/" CMD_PRINTENV ".lock";
+	int lockfd = -1;
+	int retval = EXIT_SUCCESS;
+
+	lockfd = open(lockname, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+	if (-1 == lockfd) {
+		fprintf(stderr, "Error opening lock file %s\n", lockname);
+		return EXIT_FAILURE;
+	}
+
+	if (-1 == flock(lockfd, LOCK_EX)) {
+		fprintf(stderr, "Error locking file %s\n", lockname);
+		close(lockfd);
+		return EXIT_FAILURE;
+	}
+
+	if ((p = strrchr (cmdname, '/')) != NULL) {
+		cmdname = p + 1;
+	}
+
+	while ((c = getopt_long (argc, argv, "a:ns:h",
+		long_options, NULL)) != EOF) {
+		switch (c) {
+		case 'a':
+			/* AES key, handled later */
+			break;
+		case 'n':
+			/* handled in fw_printenv */
+			break;
+		case 's':
+			script_file = optarg;
+			break;
+		case 'h':
+			usage();
+			goto exit;
+		default: /* '?' */
+			fprintf(stderr, "Try `%s --help' for more information."
+				"\n", cmdname);
+			retval = EXIT_FAILURE;
+			goto exit;
+		}
+	}
+
+	if (strcmp(cmdname, CMD_PRINTENV) == 0) {
+		if (fw_printenv(argc, argv) != 0)
+			retval = EXIT_FAILURE;
+	} else if (strcmp(cmdname, CMD_SETENV) == 0) {
+		if (!script_file) {
+			if (fw_setenv(argc, argv) != 0)
+				retval = EXIT_FAILURE;
+		} else {
+			if (fw_parse_script(script_file) != 0)
+				retval = EXIT_FAILURE;
+		}
+	} else {
+		fprintf(stderr,
+			"Identity crisis - may be called as `" CMD_PRINTENV
+			"' or as `" CMD_SETENV "' but not as `%s'\n",
+			cmdname);
+		retval = EXIT_FAILURE;
+	}
+
+exit:
+	flock(lockfd, LOCK_UN);
+	close(lockfd);
+	return retval;
+}