diff options
| -rw-r--r-- | common/cmd_nvedit.c | 20 | ||||
| -rw-r--r-- | include/common.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 101bc49..fa99c44 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -540,6 +540,26 @@ int getenv_f(const char *name, char *buf, unsigned len) return -1; } +/** + * Decode the integer value of an environment variable and return it. + * + * @param name Name of environemnt variable + * @param base Number base to use (normally 10, or 16 for hex) + * @param default_val Default value to return if the variable is not + * found + * @return the decoded value, or default_val if not found + */ +ulong getenv_ulong(const char *name, int base, ulong default_val) +{ + /* + * We can use getenv() here, even before relocation, since the + * environment variable value is an integer and thus short. + */ + const char *str = getenv(name); + + return str ? simple_strtoul(str, NULL, base) : default_val; +} + #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) diff --git a/include/common.h b/include/common.h index db1c7d0..a1683a2 100644 --- a/include/common.h +++ b/include/common.h @@ -297,6 +297,7 @@ void env_relocate (void); int envmatch (uchar *, int); char *getenv (const char *); int getenv_f (const char *name, char *buf, unsigned len); +ulong getenv_ulong(const char *name, int base, ulong default_val); int saveenv (void); #ifdef CONFIG_PPC /* ARM version to be fixed! */ int inline setenv (const char *, const char *); |