MIPS: TXx9: Improve handling of built-in and command-line args

[linux-2.6-omap-h63xx.git] / arch / mips / txx9 / generic / setup.c

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index fe6bee09cecea23e640a40861a9dcbc4e4adfe94..33d8c9e3223d37ac90e0b756f22c85b07d38f833 100644 (file)
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -127,31 +127,51 @@ extern struct txx9_board_vec rbtx4938_vec;
 struct txx9_board_vec *txx9_board_vec __initdata;
 static char txx9_system_type[32];
 
-void __init prom_init_cmdline(void)
+static void __init prom_init_cmdline(void)
 {
        int argc = (int)fw_arg0;
-       char **argv = (char **)fw_arg1;
+       int *argv32 = (int *)fw_arg1;
        int i;                  /* Always ignore the "-c" at argv[0] */
-#ifdef CONFIG_64BIT
-       char *fixed_argv[32];
-       for (i = 0; i < argc; i++)
-               fixed_argv[i] = (char *)(long)(*((__s32 *)argv + i));
-       argv = fixed_argv;
-#endif
+       char builtin[CL_SIZE];
 
        /* ignore all built-in args if any f/w args given */
-       if (argc > 1)
-               *arcs_cmdline = '\0';
+       /*
+        * But if built-in strings was started with '+', append them
+        * to command line args.  If built-in was started with '-',
+        * ignore all f/w args.
+        */
+       builtin[0] = '\0';
+       if (arcs_cmdline[0] == '+')
+               strcpy(builtin, arcs_cmdline + 1);
+       else if (arcs_cmdline[0] == '-') {
+               strcpy(builtin, arcs_cmdline + 1);
+               argc = 0;
+       } else if (argc <= 1)
+               strcpy(builtin, arcs_cmdline);
+       arcs_cmdline[0] = '\0';
 
        for (i = 1; i < argc; i++) {
+               char *str = (char *)(long)argv32[i];
                if (i != 1)
                        strcat(arcs_cmdline, " ");
-               strcat(arcs_cmdline, argv[i]);
+               if (strchr(str, ' ')) {
+                       strcat(arcs_cmdline, "\"");
+                       strcat(arcs_cmdline, str);
+                       strcat(arcs_cmdline, "\"");
+               } else
+                       strcat(arcs_cmdline, str);
+       }
+       /* append saved builtin args */
+       if (builtin[0]) {
+               if (arcs_cmdline[0])
+                       strcat(arcs_cmdline, " ");
+               strcat(arcs_cmdline, builtin);
        }
 }
 
 void __init prom_init(void)
 {
+       prom_init_cmdline();
 #ifdef CONFIG_CPU_TX39XX
        txx9_board_vec = &jmr3927_vec;
 #endif