diff options
Diffstat (limited to 'common/cmd_nvedit.c')
| -rw-r--r-- | common/cmd_nvedit.c | 104 |
1 files changed, 72 insertions, 32 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 2186205a1a5..eb89e9e60a6 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -42,6 +42,9 @@ #include <common.h> #include <command.h> #include <environment.h> +#if defined(CONFIG_CMD_EDITENV) +#include <malloc.h> +#endif #include <watchdog.h> #include <serial.h> #include <linux/stddef.h> @@ -202,6 +205,37 @@ int _do_setenv (int flag, int argc, char *argv[]) break; } + /* Check for console redirection */ + if (strcmp(name,"stdin") == 0) { + console = stdin; + } else if (strcmp(name,"stdout") == 0) { + console = stdout; + } else if (strcmp(name,"stderr") == 0) { + console = stderr; + } + + if (console != -1) { + if (argc < 3) { /* Cannot delete it! */ + printf("Can't delete \"%s\"\n", name); + return 1; + } + +#ifdef CONFIG_CONSOLE_MUX + i = iomux_doenv(console, argv[2]); + if (i) + return i; +#else + /* Try assigning specified device */ + if (console_assign (console, argv[2]) < 0) + return 1; + +#ifdef CONFIG_SERIAL_MULTI + if (serial_assign (argv[2]) < 0) + return 1; +#endif +#endif /* CONFIG_CONSOLE_MUX */ + } + /* * Delete any existing definition */ @@ -229,37 +263,6 @@ int _do_setenv (int flag, int argc, char *argv[]) } #endif - /* Check for console redirection */ - if (strcmp(name,"stdin") == 0) { - console = stdin; - } else if (strcmp(name,"stdout") == 0) { - console = stdout; - } else if (strcmp(name,"stderr") == 0) { - console = stderr; - } - - if (console != -1) { - if (argc < 3) { /* Cannot delete it! */ - printf("Can't delete \"%s\"\n", name); - return 1; - } - -#ifdef CONFIG_CONSOLE_MUX - i = iomux_doenv(console, argv[2]); - if (i) - return i; -#else - /* Try assigning specified device */ - if (console_assign (console, argv[2]) < 0) - return 1; - -#ifdef CONFIG_SERIAL_MULTI - if (serial_assign (argv[2]) < 0) - return 1; -#endif -#endif /* CONFIG_CONSOLE_MUX */ - } - /* * Switch to new baudrate if new baudrate is supported */ @@ -400,7 +403,7 @@ int _do_setenv (int flag, int argc, char *argv[]) int setenv (char *varname, char *varvalue) { char *argv[4] = { "setenv", varname, varvalue, NULL }; - if (varvalue == NULL) + if ((varvalue == NULL) || (varvalue[0] == '\0')) return _do_setenv (0, 2, argv); else return _do_setenv (0, 3, argv); @@ -503,6 +506,34 @@ int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) #endif /************************************************************************ + * Interactively edit an environment variable + */ +#if defined(CONFIG_CMD_EDITENV) +int do_editenv(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + char buffer[CONFIG_SYS_CBSIZE]; + char *init_val; + int len; + + if (argc < 2) { + cmd_usage(cmdtp); + return 1; + } + + /* Set read buffer to initial value or empty sting */ + init_val = getenv(argv[1]); + if (init_val) + len = sprintf(buffer, "%s", init_val); + else + buffer[0] = '\0'; + + readline_into_buffer("edit: ", buffer); + + return setenv(argv[1], buffer); +} +#endif /* CONFIG_CMD_EDITENV */ + +/************************************************************************ * Look up variable from environment, * return address of storage for that variable, * or NULL if not found @@ -597,6 +628,15 @@ int envmatch (uchar *s1, int i2) /**************************************************/ +#if defined(CONFIG_CMD_EDITENV) +U_BOOT_CMD( + editenv, 2, 0, do_editenv, + "edit environment variable", + "name\n" + " - edit environment variable 'name'" +); +#endif + U_BOOT_CMD( printenv, CONFIG_SYS_MAXARGS, 1, do_printenv, "print environment variables", |