diff options
Diffstat (limited to 'include/command.h')
| -rw-r--r-- | include/command.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/include/command.h b/include/command.h index b9b5ec1afa..e900f97df3 100644 --- a/include/command.h +++ b/include/command.h @@ -117,7 +117,31 @@ int cmd_process_error(struct cmd_tbl *cmdtp, int err); defined(CONFIG_CMD_PCI) || \ defined(CONFIG_CMD_SETEXPR) #define CMD_DATA_SIZE -extern int cmd_get_data_size(char* arg, int default_size); +#define CMD_DATA_SIZE_ERR (-1) +#define CMD_DATA_SIZE_STR (-2) + +/** + * cmd_get_data_size() - Get the data-size specifier from a command + * + * This reads a '.x' size specifier appended to a command. For example 'md.b' + * is the 'md' command with a '.b' specifier, meaning that the command should + * use bytes. + * + * Valid characters are: + * + * b - byte + * w - word (16 bits) + * l - long (32 bits) + * q - quad (64 bits) + * s - string + * + * @arg: Pointers to the command to check. If a valid specifier is present it + * will be the last character of the string, following a '.' + * @default_size: Default size to return if there is no specifier + * @return data size in bytes (1, 2, 4, 8) or CMD_DATA_SIZE_ERR for an invalid + * character, or CMD_DATA_SIZE_STR for a string + */ +int cmd_get_data_size(char *arg, int default_size); #endif #ifdef CONFIG_CMD_BOOTD |