Merge branch 'master' of git://git.denx.de/u-boot-sunxi

[u-boot] / cmd / nvedit.c

diff --git a/cmd/nvedit.c b/cmd/nvedit.c
index a690d743cd4667cd4859c40bd64fcad20bbc4978..ddc888a4fdfc7c98216d9a1ded75f0e8bcea5cd4 100644 (file)
--- a/cmd/nvedit.c
+++ b/cmd/nvedit.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2000-2013
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
@@ -6,8 +7,6 @@
  * Andreas Heppel <aheppel@sysgo.de>
  *
  * Copyright 2011 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 /*
@@ -341,6 +340,36 @@ ulong env_get_hex(const char *varname, ulong default_val)
        return value;
 }
 
+void eth_parse_enetaddr(const char *addr, uint8_t *enetaddr)
+{
+       char *end;
+       int i;
+
+       for (i = 0; i < 6; ++i) {
+               enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
+               if (addr)
+                       addr = (*end) ? end + 1 : end;
+       }
+}
+
+int eth_env_get_enetaddr(const char *name, uint8_t *enetaddr)
+{
+       eth_parse_enetaddr(env_get(name), enetaddr);
+       return is_valid_ethaddr(enetaddr);
+}
+
+int eth_env_set_enetaddr(const char *name, const uint8_t *enetaddr)
+{
+       char buf[ARP_HLEN_ASCII + 1];
+
+       if (eth_env_get_enetaddr(name, (uint8_t *)buf))
+               return -EEXIST;
+
+       sprintf(buf, "%pM", enetaddr);
+
+       return env_set(name, buf);
+}
+
 #ifndef CONFIG_SPL_BUILD
 static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
@@ -650,12 +679,14 @@ char *env_get(const char *name)
  */
 int env_get_f(const char *name, char *buf, unsigned len)
 {
-       int i, nxt;
+       int i, nxt, c;
 
        for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
                int val, n;
 
-               for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) {
+               for (nxt = i; (c = env_get_char(nxt)) != '\0'; ++nxt) {
+                       if (c < 0)
+                               return c;
                        if (nxt >= CONFIG_ENV_SIZE)
                                return -1;
                }
@@ -666,7 +697,10 @@ int env_get_f(const char *name, char *buf, unsigned len)
 
                /* found; copy out */
                for (n = 0; n < len; ++n, ++buf) {
-                       *buf = env_get_char(val++);
+                       c = env_get_char(val++);
+                       if (c < 0)
+                               return c;
+                       *buf = c;
                        if (*buf == '\0')
                                return n;
                }
@@ -686,7 +720,7 @@ int env_get_f(const char *name, char *buf, unsigned len)
 /**
  * Decode the integer value of an environment variable and return it.
  *
- * @param name         Name of environemnt variable
+ * @param name         Name of environment 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