Tools: set multiple variable with fw_setenv utility
Add a sort of batch mode to fw_setenv, allowing to set
multiple variables in one shot, without updating the flash after
each set as now. It is added the possibility to pass
a config file with a list of pairs <variable, value> to be set,
separated by a TAB character.
Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/tools/env/fw_env_main.c b/tools/env/fw_env_main.c
index 7f631c4..82116b4 100644
--- a/tools/env/fw_env_main.c
+++ b/tools/env/fw_env_main.c
@@ -42,34 +42,87 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
+#include <getopt.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\n"
+ "\tfw_setenv [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;
if ((p = strrchr (cmdname, '/')) != NULL) {
cmdname = p + 1;
}
+ while ((c = getopt_long (argc, argv, "s:h",
+ long_options, NULL)) != EOF) {
+ switch (c) {
+ case 's':
+ script_file = optarg;
+ break;
+ case 'h':
+ usage();
+ return EXIT_SUCCESS;
+ }
+ }
+
+
if (strcmp(cmdname, CMD_PRINTENV) == 0) {
if (fw_printenv (argc, argv) != 0)
- return (EXIT_FAILURE);
+ return EXIT_FAILURE;
- return (EXIT_SUCCESS);
+ return EXIT_SUCCESS;
} else if (strcmp(cmdname, CMD_SETENV) == 0) {
+ if (!script_file) {
+ if (fw_setenv(argc, argv) != 0)
+ return EXIT_FAILURE;
+ } else {
+ if (fw_parse_script(script_file) != 0)
+ return EXIT_FAILURE;
+ }
- if (fw_setenv (argc, argv) != 0)
- return (EXIT_FAILURE);
-
- return (EXIT_SUCCESS);
+ return EXIT_SUCCESS;
}
@@ -77,5 +130,5 @@
"Identity crisis - may be called as `" CMD_PRINTENV
"' or as `" CMD_SETENV "' but not as `%s'\n",
cmdname);
- return (EXIT_FAILURE);
+ return EXIT_FAILURE;
}