[MIPS] Au1xx0: fix prom_getenv() to handle YAMON style environment

Alchemy boards use YAMON which passes the environment variables as the
tuples of strings (the name followed by the value) unlike PMON which
passes "name=<val>" strings.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/au1000/common/prom.c b/arch/mips/au1000/common/prom.c
index 9c171afd9a534f121e1e4c0ff5c0c8165e9951e8..ae7d8c57bf3f8d889758f02607a2ad0aec16e4c2 100644 (file)
--- a/arch/mips/au1000/common/prom.c
+++ b/arch/mips/au1000/common/prom.c
@@ -1,10 +1,9 @@
 /*
  *
  * BRIEF MODULE DESCRIPTION
- *    PROM library initialisation code, assuming a version of
- *    pmon is the boot code.
+ *    PROM library initialisation code, assuming YAMON is the boot loader.
  *
- * Copyright 2000,2001 MontaVista Software Inc.
+ * Copyright 2000, 2001, 2006 MontaVista Software Inc.
  * Author: MontaVista Software, Inc.
  *             ppopov@mvista.com or source@mvista.com
  *
@@ -49,9 +48,9 @@ extern char **prom_argv, **prom_envp;
 
 typedef struct
 {
-    char *name;
-/*    char *val; */
-}t_env_var;
+       char *name;
+       char *val;
+} t_env_var;
 
 
 char * prom_getcmdline(void)
@@ -85,21 +84,16 @@ char *prom_getenv(char *envname)
 {
        /*
         * Return a pointer to the given environment variable.
-        * Environment variables are stored in the form of "memsize=64".
         */
 
        t_env_var *env = (t_env_var *)prom_envp;
-       int i;
-
-       i = strlen(envname);
 
-       while(env->name) {
-               if(strncmp(envname, env->name, i) == 0) {
-                       return(env->name + strlen(envname) + 1);
-               }
+       while (env->name) {
+               if (strcmp(envname, env->name) == 0)
+                       return env->val;
                env++;
        }
-       return(NULL);
+       return NULL;
 }
 
 inline unsigned char str2hexnum(unsigned char c)