--- hw/mips_r4k.c.orig	2006-10-30 23:28:58.000000000 +0100
+++ hw/mips_r4k.c	2006-10-31 14:59:33.000000000 +0100
@@ -121,7 +121,7 @@
     unsigned long bios_offset;
     int ret;
     CPUState *env;
-    long kernel_size;
+    long kernel_size, initrd_size;
     int i;
 
     env = cpu_init();
@@ -163,10 +163,11 @@
 	}
 
         /* load initrd */
+        initrd_size = 0;
         if (initrd_filename) {
-            if (load_image(initrd_filename,
-			   phys_ram_base + INITRD_LOAD_ADDR + VIRT_TO_PHYS_ADDEND)
-		== (target_ulong) -1) {
+            initrd_size = load_image(initrd_filename,
+                                     phys_ram_base + INITRD_LOAD_ADDR + VIRT_TO_PHYS_ADDEND);
+            if (initrd_size == (target_ulong) -1) {
                 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", 
                         initrd_filename);
                 exit(1);
@@ -174,7 +175,17 @@
         }
 
 	/* Store command line.  */
-        strcpy (phys_ram_base + (16 << 20) - 256, kernel_cmdline);
+        if (initrd_size > 0) {
+            ret = sprintf(phys_ram_base + (16 << 20) - 256, 
+                          "rd_start=0x%08x rd_size=%li ",
+                          INITRD_LOAD_ADDR,
+                          initrd_size);
+            strcpy (phys_ram_base + (16 << 20) - 256 + ret, kernel_cmdline);
+	}
+	else {
+            strcpy (phys_ram_base + (16 << 20) - 256, kernel_cmdline);
+	}
+
         /* FIXME: little endian support */
         *(int *)(phys_ram_base + (16 << 20) - 260) = tswap32 (0x12345678);
         *(int *)(phys_ram_base + (16 << 20) - 264) = tswap32 (ram_size);