[adm5120] rewrite of memory detection code, should be fix #1909

[openwrt.git] / target / linux / adm5120-2.6 / files / arch / mips / adm5120 / prom.c

diff --git a/target/linux/adm5120-2.6/files/arch/mips/adm5120/prom.c b/target/linux/adm5120-2.6/files/arch/mips/adm5120/prom.c
index 63e5b86..c2e1dcb 100644 (file)
--- a/target/linux/adm5120-2.6/files/arch/mips/adm5120/prom.c
+++ b/target/linux/adm5120-2.6/files/arch/mips/adm5120/prom.c
@@ -32,13 +32,12 @@
 
 #include <asm/mach-adm5120/adm5120_info.h>
 
+static char **prom_envp = NULL;
+
 void setup_prom_printf(int);
 void prom_printf(char *, ...);
 void prom_meminit(void);
 
-#define ADM5120_ENVC           1
-
-char *adm5120_envp[2*ADM5120_ENVC] = {"memsize","0x001000000"};
 
 #define READCSR(r)      *(volatile unsigned long *)(0xB2600000+(r))
 #define WRITECSR(r,v)   *(volatile unsigned long *)(0xB2600000+(r)) = v
@@ -81,30 +80,36 @@ void prom_printf(char *fmt, ...)
 
 char *prom_getenv(char *envname)
 {
-       int i, index=0;
+       char **env;
+       char *ret;
 
-       i = strlen(envname);
+       ret = NULL;
 
-       printk(KERN_INFO "GETENV: envname is %s\n", envname);
+       if (prom_envp== NULL)
+               return NULL;
 
-       while(index < (2*ADM5120_ENVC)) {
-               if(strncmp(envname, adm5120_envp[index], i) == 0) {
-                       printk(KERN_INFO "GETENV: returning %s\n", adm5120_envp[index+1]);
-                       return(adm5120_envp[index+1]);
+       for (env = prom_envp; *env != NULL; env++) {
+               if (strcmp(envname, *env++) == 0) {
+                       ret = *env;
+                       break;
                }
-               index += 2;
        }
 
-       printk(KERN_INFO "GETENV: not found.\n");
-       return(NULL);
+       return ret;
 }
 
-
+extern char _image_cmdline;
 /*
  * initialize the prom module.
  */
 void __init prom_init(void)
 {
+       char *cmd;
+
+       if ((fw_arg2 & 3) == 0) {
+               prom_envp = (char **)fw_arg2;
+       }
+
        adm5120_info_init();
 
        /* you should these macros defined in include/asm/bootinfo.h */
@@ -112,7 +117,9 @@ void __init prom_init(void)
        mips_machtype = adm5120_board.mach_type;
 
        /* init command line, register a default kernel command line */
-       strcpy(&(arcs_cmdline[0]), CONFIG_CMDLINE);
+       cmd = &_image_cmdline + 8;
+       if( strlen(cmd) > 0) strcpy( &(arcs_cmdline[0]), cmd);
+               else strcpy(&(arcs_cmdline[0]), CONFIG_CMDLINE);
 
        /* init memory map */
        prom_meminit();