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authorDomen Puncer <domen.puncer@ultra.si>2006-07-03 08:17:09 +0200
committerRalf Baechle <ralf@linux-mips.org>2006-07-13 21:26:02 +0100
commit6fe725c01c0c547c4287ba3de5ebc8f884178409 (patch)
treef398808f0e9503e341d7e00523065985d78adf38 /arch/mips/au1000/common/prom.c
parentc36cd4bab5084798b401d529129a950f4a48662d (diff)
[MIPS] au1xxx: Support both YAMON and U-Boot
Signed-off-by: Domen Puncer <domen.puncer@ultra.si> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/au1000/common/prom.c')
-rw-r--r--arch/mips/au1000/common/prom.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/arch/mips/au1000/common/prom.c b/arch/mips/au1000/common/prom.c
index ae7d8c57bf3f..b4b010a2fe36 100644
--- a/arch/mips/au1000/common/prom.c
+++ b/arch/mips/au1000/common/prom.c
@@ -1,7 +1,7 @@
/*
*
* BRIEF MODULE DESCRIPTION
- * PROM library initialisation code, assuming YAMON is the boot loader.
+ * PROM library initialisation code, supports YAMON and U-Boot.
*
* Copyright 2000, 2001, 2006 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
@@ -46,12 +46,6 @@
extern int prom_argc;
extern char **prom_argv, **prom_envp;
-typedef struct
-{
- char *name;
- char *val;
-} t_env_var;
-
char * prom_getcmdline(void)
{
@@ -84,13 +78,21 @@ char *prom_getenv(char *envname)
{
/*
* Return a pointer to the given environment variable.
+ * YAMON uses "name", "value" pairs, while U-Boot uses "name=value".
*/
- t_env_var *env = (t_env_var *)prom_envp;
-
- while (env->name) {
- if (strcmp(envname, env->name) == 0)
- return env->val;
+ char **env = prom_envp;
+ int i = strlen(envname);
+ int yamon = (*env && strchr(*env, '=') == NULL);
+
+ while (*env) {
+ if (yamon) {
+ if (strcmp(envname, *env++) == 0)
+ return *env;
+ } else {
+ if (strncmp(envname, *env, i) == 0 && (*env)[i] == '=')
+ return *env + i + 1;
+ }
env++;
}
return NULL;