diff options
Diffstat (limited to 'tools/env/fw_env_main.c')
| -rw-r--r-- | tools/env/fw_env_main.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/tools/env/fw_env_main.c b/tools/env/fw_env_main.c index 2b85d78864..ce50d58b64 100644 --- a/tools/env/fw_env_main.c +++ b/tools/env/fw_env_main.c @@ -9,18 +9,22 @@ * Command line user interface to firmware (=U-Boot) environment. * * Implements: - * fw_printenv [[ -n name ] | [ name ... ]] + * 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 name [ value ... ] + * 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> @@ -46,8 +50,8 @@ void usage(void) fprintf(stderr, "fw_printenv/fw_setenv, " "a command line interface to U-Boot environment\n\n" - "usage:\tfw_printenv [-n] [variable name]\n" - "\tfw_setenv [variable name] [variable value]\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 " @@ -94,9 +98,12 @@ int main(int argc, char *argv[]) cmdname = p + 1; } - while ((c = getopt_long (argc, argv, "ns:h", + 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; |